layers/draw_state.cpp

/*
 * XGL
 *
 * Copyright (C) 2014 LunarG, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unordered_map>

#include "loader_platform.h"
#include "xgl_dispatch_table_helper.h"
#include "xgl_struct_string_helper_cpp.h"
#pragma GCC diagnostic ignored "-Wwrite-strings"
#include "xgl_struct_graphviz_helper.h"
#pragma GCC diagnostic warning "-Wwrite-strings"
#include "xgl_struct_size_helper.h"
#include "draw_state.h"
#include "layers_config.h"
// The following is #included again to catch certain OS-specific functions
// being used:
#include "loader_platform.h"
#include "layers_msg.h"

unordered_map<XGL_SAMPLER, SAMPLER_NODE*> sampleMap;
unordered_map<XGL_IMAGE_VIEW, IMAGE_NODE*> imageMap;
unordered_map<XGL_BUFFER_VIEW, BUFFER_NODE*> bufferMap;
unordered_map<XGL_DYNAMIC_STATE_OBJECT, DYNAMIC_STATE_NODE*> dynamicStateMap;
unordered_map<XGL_PIPELINE, PIPELINE_NODE*> pipelineMap;
unordered_map<XGL_DESCRIPTOR_REGION, REGION_NODE*> regionMap;
unordered_map<XGL_DESCRIPTOR_SET, SET_NODE*> setMap;
unordered_map<XGL_DESCRIPTOR_SET_LAYOUT, LAYOUT_NODE*> layoutMap;
unordered_map<XGL_CMD_BUFFER, GLOBAL_CB_NODE*> cmdBufferMap;

static XGL_LAYER_DISPATCH_TABLE nextTable;
static XGL_BASE_LAYER_OBJECT *pCurObj;
static LOADER_PLATFORM_THREAD_ONCE_DECLARATION(g_initOnce);
// TODO : This can be much smarter, using separate locks for separate global data
static int globalLockInitialized = 0;
static loader_platform_thread_mutex globalLock;
#define ALLOC_DEBUG 0
#if ALLOC_DEBUG
static uint64_t g_alloc_count = 0;
static uint64_t g_free_count = 0;
#endif
#define MAX_TID 513
static loader_platform_thread_id g_tidMapping[MAX_TID] = {0};
static uint32_t g_maxTID = 0;
// Map actual TID to an index value and return that index
//  This keeps TIDs in range from 0-MAX_TID and simplifies compares between runs
static uint32_t getTIDIndex() {
    loader_platform_thread_id tid = loader_platform_get_thread_id();
    for (uint32_t i = 0; i < g_maxTID; i++) {
        if (tid == g_tidMapping[i])
            return i;
    }
    // Don't yet have mapping, set it and return newly set index
    uint32_t retVal = (uint32_t) g_maxTID;
    g_tidMapping[g_maxTID++] = tid;
    assert(g_maxTID < MAX_TID);
    return retVal;
}
// Return a string representation of CMD_TYPE enum
static string cmdTypeToString(CMD_TYPE cmd)
{
    switch (cmd)
    {
        case CMD_BINDPIPELINE:
            return "CMD_BINDPIPELINE";
        case CMD_BINDPIPELINEDELTA:
            return "CMD_BINDPIPELINEDELTA";
        case CMD_BINDDYNAMICSTATEOBJECT:
            return "CMD_BINDDYNAMICSTATEOBJECT";
        case CMD_BINDDESCRIPTORSET:
            return "CMD_BINDDESCRIPTORSET";
        case CMD_BINDINDEXBUFFER:
            return "CMD_BINDINDEXBUFFER";
        case CMD_BINDVERTEXBUFFER:
            return "CMD_BINDVERTEXBUFFER";
        case CMD_DRAW:
            return "CMD_DRAW";
        case CMD_DRAWINDEXED:
            return "CMD_DRAWINDEXED";
        case CMD_DRAWINDIRECT:
            return "CMD_DRAWINDIRECT";
        case CMD_DRAWINDEXEDINDIRECT:
            return "CMD_DRAWINDEXEDINDIRECT";
        case CMD_DISPATCH:
            return "CMD_DISPATCH";
        case CMD_DISPATCHINDIRECT:
            return "CMD_DISPATCHINDIRECT";
        case CMD_COPYBUFFER:
            return "CMD_COPYBUFFER";
        case CMD_COPYIMAGE:
            return "CMD_COPYIMAGE";
        case CMD_COPYBUFFERTOIMAGE:
            return "CMD_COPYBUFFERTOIMAGE";
        case CMD_COPYIMAGETOBUFFER:
            return "CMD_COPYIMAGETOBUFFER";
        case CMD_CLONEIMAGEDATA:
            return "CMD_CLONEIMAGEDATA";
        case CMD_UPDATEBUFFER:
            return "CMD_UPDATEBUFFER";
        case CMD_FILLBUFFER:
            return "CMD_FILLBUFFER";
        case CMD_CLEARCOLORIMAGE:
            return "CMD_CLEARCOLORIMAGE";
        case CMD_CLEARCOLORIMAGERAW:
            return "CMD_CLEARCOLORIMAGERAW";
        case CMD_CLEARDEPTHSTENCIL:
            return "CMD_CLEARDEPTHSTENCIL";
        case CMD_RESOLVEIMAGE:
            return "CMD_RESOLVEIMAGE";
        case CMD_SETEVENT:
            return "CMD_SETEVENT";
        case CMD_RESETEVENT:
            return "CMD_RESETEVENT";
        case CMD_WAITEVENTS:
            return "CMD_WAITEVENTS";
        case CMD_PIPELINEBARRIER:
            return "CMD_PIPELINEBARRIER";
        case CMD_BEGINQUERY:
            return "CMD_BEGINQUERY";
        case CMD_ENDQUERY:
            return "CMD_ENDQUERY";
        case CMD_RESETQUERYPOOL:
            return "CMD_RESETQUERYPOOL";
        case CMD_WRITETIMESTAMP:
            return "CMD_WRITETIMESTAMP";
        case CMD_INITATOMICCOUNTERS:
            return "CMD_INITATOMICCOUNTERS";
        case CMD_LOADATOMICCOUNTERS:
            return "CMD_LOADATOMICCOUNTERS";
        case CMD_SAVEATOMICCOUNTERS:
            return "CMD_SAVEATOMICCOUNTERS";
        case CMD_BEGINRENDERPASS:
            return "CMD_BEGINRENDERPASS";
        case CMD_ENDRENDERPASS:
            return "CMD_ENDRENDERPASS";
        case CMD_DBGMARKERBEGIN:
            return "CMD_DBGMARKERBEGIN";
        case CMD_DBGMARKEREND:
            return "CMD_DBGMARKEREND";
        default:
            return "UNKNOWN";
    }
}
// Block of code at start here for managing/tracking Pipeline state that this layer cares about
// Just track 2 shaders for now
#define XGL_NUM_GRAPHICS_SHADERS XGL_SHADER_STAGE_COMPUTE
#define MAX_SLOTS 2048
#define NUM_COMMAND_BUFFERS_TO_DISPLAY 10

static uint64_t g_drawCount[NUM_DRAW_TYPES] = {0, 0, 0, 0};

// TODO : Should be tracking lastBound per cmdBuffer and when draws occur, report based on that cmd buffer lastBound
//   Then need to synchronize the accesses based on cmd buffer so that if I'm reading state on one cmd buffer, updates
//   to that same cmd buffer by separate thread are not changing state from underneath us
// Track the last cmd buffer touched by this thread
static XGL_CMD_BUFFER    g_lastCmdBuffer[MAX_TID] = {NULL};
// Track the last group of CBs touched for displaying to dot file
static GLOBAL_CB_NODE*   g_pLastTouchedCB[NUM_COMMAND_BUFFERS_TO_DISPLAY] = {NULL};
static uint32_t g_lastTouchedCBIndex = 0;
// Track the last global DrawState of interest touched by any thread
static GLOBAL_CB_NODE*        g_lastGlobalCB = NULL;
static PIPELINE_NODE*         g_lastBoundPipeline = NULL;
static DYNAMIC_STATE_NODE*    g_lastBoundDynamicState[XGL_NUM_STATE_BIND_POINT] = {NULL};
static XGL_DESCRIPTOR_SET     g_lastBoundDescriptorSet = NULL;
#define MAX_BINDING 0xFFFFFFFF // Default vtxBinding value in CB Node to identify if no vtxBinding set

//static DYNAMIC_STATE_NODE* g_pDynamicStateHead[XGL_NUM_STATE_BIND_POINT] = {0};

static void insertDynamicState(const XGL_DYNAMIC_STATE_OBJECT state, const GENERIC_HEADER* pCreateInfo, XGL_STATE_BIND_POINT bindPoint)
{
    XGL_DYNAMIC_VP_STATE_CREATE_INFO* pVPCI = NULL;
    size_t scSize = 0;
    size_t vpSize = 0;
    loader_platform_thread_lock_mutex(&globalLock);
    DYNAMIC_STATE_NODE* pStateNode = new DYNAMIC_STATE_NODE;
    pStateNode->stateObj = state;
    switch (pCreateInfo->sType) {
        case XGL_STRUCTURE_TYPE_DYNAMIC_VP_STATE_CREATE_INFO:
            memcpy(&pStateNode->create_info, pCreateInfo, sizeof(XGL_DYNAMIC_VP_STATE_CREATE_INFO));
            pVPCI = (XGL_DYNAMIC_VP_STATE_CREATE_INFO*)pCreateInfo;
            pStateNode->create_info.vpci.pScissors = new XGL_RECT[pStateNode->create_info.vpci.viewportAndScissorCount];
            pStateNode->create_info.vpci.pViewports = new XGL_VIEWPORT[pStateNode->create_info.vpci.viewportAndScissorCount];
            scSize = pVPCI->viewportAndScissorCount * sizeof(XGL_RECT);
            vpSize = pVPCI->viewportAndScissorCount * sizeof(XGL_VIEWPORT);
            memcpy((void*)pStateNode->create_info.vpci.pScissors, pVPCI->pScissors, scSize);
            memcpy((void*)pStateNode->create_info.vpci.pViewports, pVPCI->pViewports, vpSize);
            break;
        case XGL_STRUCTURE_TYPE_DYNAMIC_RS_STATE_CREATE_INFO:
            memcpy(&pStateNode->create_info, pCreateInfo, sizeof(XGL_DYNAMIC_RS_STATE_CREATE_INFO));
            break;
        case XGL_STRUCTURE_TYPE_DYNAMIC_CB_STATE_CREATE_INFO:
            memcpy(&pStateNode->create_info, pCreateInfo, sizeof(XGL_DYNAMIC_CB_STATE_CREATE_INFO));
            break;
        case XGL_STRUCTURE_TYPE_DYNAMIC_DS_STATE_CREATE_INFO:
            memcpy(&pStateNode->create_info, pCreateInfo, sizeof(XGL_DYNAMIC_DS_STATE_CREATE_INFO));
            break;
        default:
            assert(0);
            break;
    }
    pStateNode->pCreateInfo = (GENERIC_HEADER*)&pStateNode->create_info.cbci;
    dynamicStateMap[state] = pStateNode;
    loader_platform_thread_unlock_mutex(&globalLock);
}
// Free all allocated nodes for Dynamic State objs
static void freeDynamicState()
{
    for (unordered_map<XGL_DYNAMIC_STATE_OBJECT, DYNAMIC_STATE_NODE*>::iterator ii=dynamicStateMap.begin(); ii!=dynamicStateMap.end(); ++ii) {
        if (XGL_STRUCTURE_TYPE_DYNAMIC_VP_STATE_CREATE_INFO == (*ii).second->create_info.vpci.sType) {
            delete[] (*ii).second->create_info.vpci.pScissors;
            delete[] (*ii).second->create_info.vpci.pViewports;
        }
        delete (*ii).second;
    }
}
// Free all sampler nodes
static void freeSamplers()
{
    for (unordered_map<XGL_SAMPLER, SAMPLER_NODE*>::iterator ii=sampleMap.begin(); ii!=sampleMap.end(); ++ii) {
        delete (*ii).second;
    }
}
static XGL_IMAGE_VIEW_CREATE_INFO* getImageViewCreateInfo(XGL_IMAGE_VIEW view)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (imageMap.find(view) == imageMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    else {
        loader_platform_thread_unlock_mutex(&globalLock);
        return &imageMap[view]->createInfo;
    }
}
// Free all image nodes
static void freeImages()
{
    for (unordered_map<XGL_IMAGE_VIEW, IMAGE_NODE*>::iterator ii=imageMap.begin(); ii!=imageMap.end(); ++ii) {
        delete (*ii).second;
    }
}
static XGL_BUFFER_VIEW_CREATE_INFO* getBufferViewCreateInfo(XGL_BUFFER_VIEW view)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (bufferMap.find(view) == bufferMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    else {
        loader_platform_thread_unlock_mutex(&globalLock);
        return &bufferMap[view]->createInfo;
    }
}
// Free all buffer nodes
static void freeBuffers()
{
    for (unordered_map<XGL_BUFFER_VIEW, BUFFER_NODE*>::iterator ii=bufferMap.begin(); ii!=bufferMap.end(); ++ii) {
        delete (*ii).second;
    }
}
static GLOBAL_CB_NODE* getCBNode(XGL_CMD_BUFFER cb);

static void updateCBTracking(XGL_CMD_BUFFER cb)
{
    g_lastCmdBuffer[getTIDIndex()] = cb;
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    loader_platform_thread_lock_mutex(&globalLock);
    g_lastGlobalCB = pCB;
    // TODO : This is a dumb algorithm. Need smart LRU that drops off oldest
    for (uint32_t i = 0; i < NUM_COMMAND_BUFFERS_TO_DISPLAY; i++) {
        if (g_pLastTouchedCB[i] == pCB) {
            loader_platform_thread_unlock_mutex(&globalLock);
            return;
        }
    }
    g_pLastTouchedCB[g_lastTouchedCBIndex++] = pCB;
    g_lastTouchedCBIndex = g_lastTouchedCBIndex % NUM_COMMAND_BUFFERS_TO_DISPLAY;
    loader_platform_thread_unlock_mutex(&globalLock);
}

// Print the last bound dynamic state
static void printDynamicState(const XGL_CMD_BUFFER cb)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB) {
        loader_platform_thread_lock_mutex(&globalLock);
        char str[4*1024];
        for (uint32_t i = 0; i < XGL_NUM_STATE_BIND_POINT; i++) {
            if (pCB->lastBoundDynamicState[i]) {
                sprintf(str, "Reporting CreateInfo for currently bound %s object %p", string_XGL_STATE_BIND_POINT((XGL_STATE_BIND_POINT)i), pCB->lastBoundDynamicState[i]->stateObj);
                layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, pCB->lastBoundDynamicState[i]->stateObj, 0, DRAWSTATE_NONE, "DS", str);
                layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, pCB->lastBoundDynamicState[i]->stateObj, 0, DRAWSTATE_NONE, "DS", dynamic_display(pCB->lastBoundDynamicState[i]->pCreateInfo, "  ").c_str());
                break;
            }
            else {
                sprintf(str, "No dynamic state of type %s bound", string_XGL_STATE_BIND_POINT((XGL_STATE_BIND_POINT)i));
                layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", str);
            }
        }
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cb);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cb, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
}
// Retrieve pipeline node ptr for given pipeline object
static PIPELINE_NODE* getPipeline(XGL_PIPELINE pipeline)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (pipelineMap.find(pipeline) == pipelineMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return pipelineMap[pipeline];
}

// For given sampler, return a ptr to its Create Info struct, or NULL if sampler not found
static XGL_SAMPLER_CREATE_INFO* getSamplerCreateInfo(const XGL_SAMPLER sampler)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (sampleMap.find(sampler) == sampleMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return &sampleMap[sampler]->createInfo;
}

// Init the pipeline mapping info based on pipeline create info LL tree
//  Threading note : Calls to this function should wrapped in mutex
static void initPipeline(PIPELINE_NODE* pPipeline, const XGL_GRAPHICS_PIPELINE_CREATE_INFO* pCreateInfo)
{
    // First init create info, we'll shadow the structs as we go down the tree
    pPipeline->pCreateTree = new XGL_GRAPHICS_PIPELINE_CREATE_INFO;
    memcpy(pPipeline->pCreateTree, pCreateInfo, sizeof(XGL_GRAPHICS_PIPELINE_CREATE_INFO));
    GENERIC_HEADER* pShadowTrav = (GENERIC_HEADER*)pPipeline->pCreateTree;
    GENERIC_HEADER* pTrav = (GENERIC_HEADER*)pCreateInfo->pNext;
    size_t bufferSize = 0;
    XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO* pVICI = NULL;
    XGL_PIPELINE_CB_STATE_CREATE_INFO*     pCBCI = NULL;
    while (pTrav) {
        switch (pTrav->sType) {
            case XGL_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_SHADER_STAGE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_SHADER_STAGE_CREATE_INFO));
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO));
                // Copy embedded ptrs
                pVICI = (XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO*)pTrav;
                pPipeline->vtxBindingCount = pVICI->bindingCount;
                if (pPipeline->vtxBindingCount) {
                    pPipeline->pVertexBindingDescriptions = new XGL_VERTEX_INPUT_BINDING_DESCRIPTION[pPipeline->vtxBindingCount];
                    bufferSize = pPipeline->vtxBindingCount * sizeof(XGL_VERTEX_INPUT_BINDING_DESCRIPTION);
                    memcpy((void*)pPipeline->pVertexBindingDescriptions, ((XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO*)pTrav)->pVertexAttributeDescriptions, bufferSize);
                }
                pPipeline->vtxAttributeCount = pVICI->attributeCount;
                if (pPipeline->vtxAttributeCount) {
                    pPipeline->pVertexAttributeDescriptions = new XGL_VERTEX_INPUT_ATTRIBUTE_DESCRIPTION[pPipeline->vtxAttributeCount];
                    bufferSize = pPipeline->vtxAttributeCount * sizeof(XGL_VERTEX_INPUT_ATTRIBUTE_DESCRIPTION);
                    memcpy((void*)pPipeline->pVertexAttributeDescriptions, ((XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO*)pTrav)->pVertexAttributeDescriptions, bufferSize);
                }
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_IA_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_IA_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_IA_STATE_CREATE_INFO));
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_TESS_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_TESS_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_TESS_STATE_CREATE_INFO));
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_VP_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_VP_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_VP_STATE_CREATE_INFO));
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_RS_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_RS_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_RS_STATE_CREATE_INFO));
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_MS_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_MS_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_MS_STATE_CREATE_INFO));
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_CB_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_CB_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_CB_STATE_CREATE_INFO));
                // Copy embedded ptrs
                pCBCI = (XGL_PIPELINE_CB_STATE_CREATE_INFO*)pTrav;
                pPipeline->attachmentCount = pCBCI->attachmentCount;
                if (pPipeline->attachmentCount) {
                    pPipeline->pAttachments = new XGL_PIPELINE_CB_ATTACHMENT_STATE[pPipeline->attachmentCount];
                    bufferSize = pPipeline->attachmentCount * sizeof(XGL_PIPELINE_CB_ATTACHMENT_STATE);
                    memcpy((void*)pPipeline->pAttachments, ((XGL_PIPELINE_CB_STATE_CREATE_INFO*)pTrav)->pAttachments, bufferSize);
                }
                break;
            case XGL_STRUCTURE_TYPE_PIPELINE_DS_STATE_CREATE_INFO:
                pShadowTrav->pNext = new XGL_PIPELINE_DS_STATE_CREATE_INFO;
                memcpy((void*)pShadowTrav->pNext, pTrav, sizeof(XGL_PIPELINE_DS_STATE_CREATE_INFO));
                break;
            default:
                assert(0);
                break;
        }
        pShadowTrav = (GENERIC_HEADER*)pShadowTrav->pNext;
        pTrav = (GENERIC_HEADER*)pTrav->pNext;
    }
    pipelineMap[pPipeline->pipeline] = pPipeline;
}
// Free the Pipeline nodes
static void freePipelines()
{
    for (unordered_map<XGL_PIPELINE, PIPELINE_NODE*>::iterator ii=pipelineMap.begin(); ii!=pipelineMap.end(); ++ii) {
        // Delete create tree
        GENERIC_HEADER* pShadowTrav = (GENERIC_HEADER*)((*ii).second->pCreateTree);
        GENERIC_HEADER* pShadowFree = pShadowTrav;
        while (pShadowTrav) {
            pShadowFree = pShadowTrav;
            pShadowTrav = (GENERIC_HEADER*)pShadowTrav->pNext;
            if (XGL_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_CREATE_INFO == pShadowFree->sType) {
                if ((*ii).second->pVertexBindingDescriptions) {
                    delete[] (*ii).second->pVertexBindingDescriptions;
                }
                if ((*ii).second->pVertexAttributeDescriptions) {
                    delete[] (*ii).second->pVertexAttributeDescriptions;
                }
            }
            else if (XGL_STRUCTURE_TYPE_PIPELINE_CB_STATE_CREATE_INFO == pShadowFree->sType) {
                // Free attachment data shadowed into pPipeline node
                if ((*ii).second->pAttachments) {
                    delete[] (*ii).second->pAttachments;
                }
            }
            delete pShadowFree;
        }
        delete (*ii).second;
    }
}
// Block of code at start here specifically for managing/tracking DSs

// Return Region node ptr for specified region or else NULL
static REGION_NODE* getRegionNode(XGL_DESCRIPTOR_REGION region)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (regionMap.find(region) == regionMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return regionMap[region];
}
// Return Set node ptr for specified set or else NULL
static SET_NODE* getSetNode(XGL_DESCRIPTOR_SET set)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (setMap.find(set) == setMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return setMap[set];
}

// Return XGL_TRUE if DS Exists and is within an xglBeginDescriptorRegionUpdate() call sequence, otherwise XGL_FALSE
static bool32_t dsUpdateActive(XGL_DESCRIPTOR_SET ds)
{
    // Note, both "get" functions use global mutex so this guy does not
    SET_NODE* pTrav = getSetNode(ds);
    if (pTrav) {
        REGION_NODE* pRegion = getRegionNode(pTrav->region);
        if (pRegion) {
            return pRegion->updateActive;
        }
    }
    return XGL_FALSE;
}

static LAYOUT_NODE* getLayoutNode(XGL_DESCRIPTOR_SET_LAYOUT layout) {
    loader_platform_thread_lock_mutex(&globalLock);
    if (layoutMap.find(layout) == layoutMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return layoutMap[layout];
}

static uint32_t getUpdateIndex(GENERIC_HEADER* pUpdateStruct)
{
    switch (pUpdateStruct->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            return ((XGL_UPDATE_SAMPLERS*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            return ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            return ((XGL_UPDATE_IMAGES*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            return ((XGL_UPDATE_BUFFERS*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            return ((XGL_UPDATE_AS_COPY*)pUpdateStruct)->descriptorIndex;
        default:
            // TODO : Flag specific error for this case
            return 0;
    }
}

static uint32_t getUpdateUpperBound(GENERIC_HEADER* pUpdateStruct)
{
    switch (pUpdateStruct->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            return (((XGL_UPDATE_SAMPLERS*)pUpdateStruct)->count + ((XGL_UPDATE_SAMPLERS*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            return (((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdateStruct)->count + ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            return (((XGL_UPDATE_IMAGES*)pUpdateStruct)->count + ((XGL_UPDATE_IMAGES*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            return (((XGL_UPDATE_BUFFERS*)pUpdateStruct)->count + ((XGL_UPDATE_BUFFERS*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            // TODO : Need to understand this case better and make sure code is correct
            return (((XGL_UPDATE_AS_COPY*)pUpdateStruct)->count + ((XGL_UPDATE_AS_COPY*)pUpdateStruct)->descriptorIndex);
        default:
            // TODO : Flag specific error for this case
            return 0;
    }
}

// Verify that the descriptor type in the update struct matches what's expected by the layout
static bool32_t validateUpdateType(GENERIC_HEADER* pUpdateStruct, const LAYOUT_NODE* pLayout)//XGL_DESCRIPTOR_TYPE type)
{
    // First get actual type of update
    XGL_DESCRIPTOR_TYPE actualType;
    uint32_t i = 0;
    uint32_t bound = getUpdateUpperBound(pUpdateStruct);
    switch (pUpdateStruct->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            actualType = XGL_DESCRIPTOR_TYPE_SAMPLER;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            actualType = XGL_DESCRIPTOR_TYPE_SAMPLER_TEXTURE;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            actualType = ((XGL_UPDATE_IMAGES*)pUpdateStruct)->descriptorType;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            actualType = ((XGL_UPDATE_BUFFERS*)pUpdateStruct)->descriptorType;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            actualType = ((XGL_UPDATE_AS_COPY*)pUpdateStruct)->descriptorType;
            break;
        default:
            // TODO : Flag specific error for this case
            return 0;
    }
    for (i = getUpdateIndex(pUpdateStruct); i < bound; i++) {
        if (pLayout->pTypes[i] != actualType)
            return 0;
    }
    return 1;
}

// Verify that update region for this update does not exceed max layout index for this type
static bool32_t validateUpdateSize(GENERIC_HEADER* pUpdateStruct, uint32_t layoutIdx)
{
    if ((getUpdateUpperBound(pUpdateStruct)-1) > layoutIdx)
        return 0;
    return 1;
}
// Determine the update type, allocate a new struct of that type, shadow the given pUpdate
//   struct into the new struct and return ptr to shadow struct cast as GENERIC_HEADER
// NOTE : Calls to this function should be wrapped in mutex
static GENERIC_HEADER* shadowUpdateNode(GENERIC_HEADER* pUpdate)
{
    GENERIC_HEADER* pNewNode = NULL;
    size_t array_size = 0;
    size_t base_array_size = 0;
    size_t total_array_size = 0;
    size_t baseBuffAddr = 0;
    XGL_UPDATE_BUFFERS* pUBCI;
    XGL_UPDATE_IMAGES* pUICI;
    XGL_IMAGE_VIEW_ATTACH_INFO*** pppLocalImageViews = NULL;
    XGL_BUFFER_VIEW_ATTACH_INFO*** pppLocalBufferViews = NULL;
    char str[1024];
    switch (pUpdate->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_SAMPLERS));
#if ALLOC_DEBUG
            printf("Alloc10 #%lu pNewNode addr(%p)\n", ++g_alloc_count, (void*)pNewNode);
#endif
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_SAMPLERS));
            array_size = sizeof(XGL_SAMPLER) * ((XGL_UPDATE_SAMPLERS*)pNewNode)->count;
            ((XGL_UPDATE_SAMPLERS*)pNewNode)->pSamplers = (XGL_SAMPLER*)malloc(array_size);
#if ALLOC_DEBUG
            printf("Alloc11 #%lu pNewNode->pSamplers addr(%p)\n", ++g_alloc_count, (void*)((XGL_UPDATE_SAMPLERS*)pNewNode)->pSamplers);
#endif
            memcpy((XGL_SAMPLER*)((XGL_UPDATE_SAMPLERS*)pNewNode)->pSamplers, ((XGL_UPDATE_SAMPLERS*)pUpdate)->pSamplers, array_size);
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_SAMPLER_TEXTURES));
#if ALLOC_DEBUG
            printf("Alloc12 #%lu pNewNode addr(%p)\n", ++g_alloc_count, (void*)pNewNode);
#endif
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_SAMPLER_TEXTURES));
            array_size = sizeof(XGL_SAMPLER_IMAGE_VIEW_INFO) * ((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->count;
            ((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews = (XGL_SAMPLER_IMAGE_VIEW_INFO*)malloc(array_size);
#if ALLOC_DEBUG
            printf("Alloc13 #%lu pNewNode->pSamplerImageViews addr(%p)\n", ++g_alloc_count, (void*)((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews);
#endif
            for (uint32_t i = 0; i < ((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->count; i++) {
                memcpy((XGL_SAMPLER_IMAGE_VIEW_INFO*)&((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews[i], &((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->pSamplerImageViews[i], sizeof(XGL_SAMPLER_IMAGE_VIEW_INFO));
                ((XGL_SAMPLER_IMAGE_VIEW_INFO*)((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews)[i].pImageView = (XGL_IMAGE_VIEW_ATTACH_INFO*)malloc(sizeof(XGL_IMAGE_VIEW_ATTACH_INFO));
#if ALLOC_DEBUG
                printf("Alloc14 #%lu pSamplerImageViews)[%u].pImageView addr(%p)\n", ++g_alloc_count, i, (void*)((XGL_SAMPLER_IMAGE_VIEW_INFO*)((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews)[i].pImageView);
#endif
                memcpy((XGL_IMAGE_VIEW_ATTACH_INFO*)((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews[i].pImageView, ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->pSamplerImageViews[i].pImageView, sizeof(XGL_IMAGE_VIEW_ATTACH_INFO));
            }
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            pUICI = (XGL_UPDATE_IMAGES*)pUpdate;
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_IMAGES));
#if ALLOC_DEBUG
            printf("Alloc15 #%lu pNewNode addr(%p)\n", ++g_alloc_count, (void*)pNewNode);
#endif
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_IMAGES));
            base_array_size = sizeof(XGL_IMAGE_VIEW_ATTACH_INFO*) * ((XGL_UPDATE_IMAGES*)pNewNode)->count;
            total_array_size = (sizeof(XGL_IMAGE_VIEW_ATTACH_INFO) * ((XGL_UPDATE_IMAGES*)pNewNode)->count) + base_array_size;
            pppLocalImageViews = (XGL_IMAGE_VIEW_ATTACH_INFO***)&((XGL_UPDATE_IMAGES*)pNewNode)->pImageViews;
            *pppLocalImageViews = (XGL_IMAGE_VIEW_ATTACH_INFO**)malloc(total_array_size);
#if ALLOC_DEBUG
            printf("Alloc16 #%lu *pppLocalImageViews addr(%p)\n", ++g_alloc_count, (void*)*pppLocalImageViews);
#endif
            baseBuffAddr = (size_t)(*pppLocalImageViews) + base_array_size;
            for (uint32_t i = 0; i < pUICI->count; i++) {
                (*pppLocalImageViews)[i] = (XGL_IMAGE_VIEW_ATTACH_INFO*)(baseBuffAddr + (i * sizeof(XGL_IMAGE_VIEW_ATTACH_INFO)));
                memcpy((*pppLocalImageViews)[i], pUICI->pImageViews[i], sizeof(XGL_IMAGE_VIEW_ATTACH_INFO));
            }
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            pUBCI = (XGL_UPDATE_BUFFERS*)pUpdate;
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_BUFFERS));
#if ALLOC_DEBUG
            printf("Alloc17 #%lu pNewNode addr(%p)\n", ++g_alloc_count, (void*)pNewNode);
#endif
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_BUFFERS));
            base_array_size = sizeof(XGL_BUFFER_VIEW_ATTACH_INFO*) * pUBCI->count;
            total_array_size = (sizeof(XGL_BUFFER_VIEW_ATTACH_INFO) * pUBCI->count) + base_array_size;
            pppLocalBufferViews = (XGL_BUFFER_VIEW_ATTACH_INFO***)&((XGL_UPDATE_BUFFERS*)pNewNode)->pBufferViews;
            *pppLocalBufferViews = (XGL_BUFFER_VIEW_ATTACH_INFO**)malloc(total_array_size);
#if ALLOC_DEBUG
            printf("Alloc18 #%lu *pppLocalBufferViews addr(%p)\n", ++g_alloc_count, (void*)*pppLocalBufferViews);
#endif
            baseBuffAddr = (size_t)(*pppLocalBufferViews) + base_array_size;
            for (uint32_t i = 0; i < pUBCI->count; i++) {
                // Set ptr and then copy data into that ptr
                (*pppLocalBufferViews)[i] = (XGL_BUFFER_VIEW_ATTACH_INFO*)(baseBuffAddr + (i * sizeof(XGL_BUFFER_VIEW_ATTACH_INFO)));
                memcpy((*pppLocalBufferViews)[i], pUBCI->pBufferViews[i], sizeof(XGL_BUFFER_VIEW_ATTACH_INFO));
            }
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_AS_COPY));
#if ALLOC_DEBUG
            printf("Alloc19 #%lu pNewNode addr(%p)\n", ++g_alloc_count, (void*)pNewNode);
#endif
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_AS_COPY));
            break;
        default:
            sprintf(str, "Unexpected UPDATE struct of type %s (value %u) in xglUpdateDescriptors() struct tree", string_XGL_STRUCTURE_TYPE(pUpdate->sType), pUpdate->sType);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_INVALID_UPDATE_STRUCT, "DS", str);
            return NULL;
    }
    // Make sure that pNext for the end of shadow copy is NULL
    pNewNode->pNext = NULL;
    return pNewNode;
}
// For given ds, update its mapping based on pUpdateChain linked-list
static void dsUpdate(XGL_DESCRIPTOR_SET ds, GENERIC_HEADER* pUpdateChain)
{
    SET_NODE* pSet = getSetNode(ds);
    loader_platform_thread_lock_mutex(&globalLock);
    g_lastBoundDescriptorSet = pSet->set;
    LAYOUT_NODE* pLayout = NULL;
    XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO* pLayoutCI = NULL;
    // TODO : If pCIList is NULL, flag error
    GENERIC_HEADER* pUpdates = pUpdateChain;
    // Perform all updates
    while (pUpdates) {
        pLayout = pSet->pLayouts;
        // For each update first find the layout section that it overlaps
        while (pLayout && (pLayout->startIndex > getUpdateIndex(pUpdates))) {
            pLayout = pLayout->pPriorSetLayout;
        }
        if (!pLayout) {
            char str[1024];
            sprintf(str, "Descriptor Set %p does not have index to match update index %u for update type %s!", ds, getUpdateIndex(pUpdates), string_XGL_STRUCTURE_TYPE(pUpdates->sType));
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_INVALID_UPDATE_INDEX, "DS", str);
        }
        else {
            // Next verify that update is correct size
            if (!validateUpdateSize(pUpdates, pLayout->endIndex)) {
                char str[48*1024]; // TODO : Keep count of layout CI structs and size this string dynamically based on that count
                pLayoutCI = (XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pLayout->pCreateInfoList;
                string DSstr = xgl_print_xgl_descriptor_set_layout_create_info(pLayoutCI, "{DS}    ").c_str();
                sprintf(str, "Descriptor update type of %s is out of bounds for matching layout w/ CI:\n%s!", string_XGL_STRUCTURE_TYPE(pUpdates->sType), DSstr.c_str());
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_DESCRIPTOR_UPDATE_OUT_OF_BOUNDS, "DS", str);
            }
            else { // TODO : should we skip update on a type mismatch or force it?
                // We have the right layout section, now verify that update is of the right type
                if (!validateUpdateType(pUpdates, pLayout)) {
                    char str[1024];
                    sprintf(str, "Descriptor update type of %s does not match overlapping layout type!", string_XGL_STRUCTURE_TYPE(pUpdates->sType));
                    layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_DESCRIPTOR_TYPE_MISMATCH, "DS", str);
                }
                else {
                    // Save the update info
                    // TODO : Info message that update successful
                    // Create new update struct for this set's shadow copy
                    GENERIC_HEADER* pNewNode = shadowUpdateNode(pUpdates);
                    if (NULL == pNewNode) {
                        char str[1024];
                        sprintf(str, "Out of memory while attempting to allocate UPDATE struct in xglUpdateDescriptors()");
                        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
                    }
                    else {
                        // Insert shadow node into LL of updates for this set
                        pNewNode->pNext = pSet->pUpdateStructs;
                        pSet->pUpdateStructs = pNewNode;
                        // Now update appropriate descriptor(s) to point to new Update node
                        for (uint32_t i = getUpdateIndex(pUpdates); i < getUpdateUpperBound(pUpdates); i++) {
                            assert(i<pSet->descriptorCount);
                            pSet->ppDescriptors[i] = pNewNode;
                        }
                    }
                }
            }
        }
        pUpdates = (GENERIC_HEADER*)pUpdates->pNext;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
}
// Free the shadowed update node for this Set
// NOTE : Calls to this function should be wrapped in mutex
static void freeShadowUpdateTree(SET_NODE* pSet)
{
    GENERIC_HEADER* pShadowUpdate = pSet->pUpdateStructs;
    pSet->pUpdateStructs = NULL;
    GENERIC_HEADER* pFreeUpdate = pShadowUpdate;
    // Clear the descriptor mappings as they will now be invalid
    memset(pSet->ppDescriptors, 0, pSet->descriptorCount*sizeof(GENERIC_HEADER*));
    while(pShadowUpdate) {
        pFreeUpdate = pShadowUpdate;
        pShadowUpdate = (GENERIC_HEADER*)pShadowUpdate->pNext;
        uint32_t index = 0;
        XGL_UPDATE_SAMPLERS* pUS = NULL;
        XGL_UPDATE_SAMPLER_TEXTURES* pUST = NULL;
        XGL_UPDATE_IMAGES* pUI = NULL;
        XGL_UPDATE_BUFFERS* pUB = NULL;
        void** ppToFree = NULL;
        switch (pFreeUpdate->sType)
        {
            case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
                pUS = (XGL_UPDATE_SAMPLERS*)pFreeUpdate;
                if (pUS->pSamplers) {
                    ppToFree = (void**)&pUS->pSamplers;
#if ALLOC_DEBUG
                    printf("Free11 #%lu pSamplers addr(%p)\n", ++g_free_count, (void*)*ppToFree);
#endif
                    free(*ppToFree);
                }
                break;
            case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
                pUST = (XGL_UPDATE_SAMPLER_TEXTURES*)pFreeUpdate;
                for (index = 0; index < pUST->count; index++) {
                    if (pUST->pSamplerImageViews[index].pImageView) {
                        ppToFree = (void**)&pUST->pSamplerImageViews[index].pImageView;
#if ALLOC_DEBUG
                        printf("Free14 #%lu pImageView addr(%p)\n", ++g_free_count, (void*)*ppToFree);
#endif
                        free(*ppToFree);
                    }
                }
                ppToFree = (void**)&pUST->pSamplerImageViews;
#if ALLOC_DEBUG
                printf("Free13 #%lu pSamplerImageViews addr(%p)\n", ++g_free_count, (void*)*ppToFree);
#endif
                free(*ppToFree);
                break;
            case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
                pUI = (XGL_UPDATE_IMAGES*)pFreeUpdate;
                if (pUI->pImageViews) {
                    ppToFree = (void**)&pUI->pImageViews;
#if ALLOC_DEBUG
                    printf("Free16 #%lu pImageViews addr(%p)\n", ++g_free_count, (void*)*ppToFree);
#endif
                    free(*ppToFree);
                }
                break;
            case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
                pUB = (XGL_UPDATE_BUFFERS*)pFreeUpdate;
                if (pUB->pBufferViews) {
                    ppToFree = (void**)&pUB->pBufferViews;
#if ALLOC_DEBUG
                    printf("Free18 #%lu pBufferViews addr(%p)\n", ++g_free_count, (void*)*ppToFree);
#endif
                    free(*ppToFree);
                }
                break;
            case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
                break;
            default:
                assert(0);
                break;
        }
#if ALLOC_DEBUG
        printf("Free10, Free12, Free15, Free17, Free19 #%lu pUpdateNode addr(%p)\n", ++g_free_count, (void*)pFreeUpdate);
#endif
        free(pFreeUpdate);
    }
}
// Free all DS Regions including their Sets & related sub-structs
// NOTE : Calls to this function should be wrapped in mutex
static void freeRegions()
{
    for (unordered_map<XGL_DESCRIPTOR_REGION, REGION_NODE*>::iterator ii=regionMap.begin(); ii!=regionMap.end(); ++ii) {
        SET_NODE* pSet = (*ii).second->pSets;
        SET_NODE* pFreeSet = pSet;
        while (pSet) {
            pFreeSet = pSet;
            pSet = pSet->pNext;
            // Freeing layouts handled in freeLayouts() function
            // Free Update shadow struct tree
            freeShadowUpdateTree(pFreeSet);
            if (pFreeSet->ppDescriptors) {
                delete pFreeSet->ppDescriptors;
            }
            delete pFreeSet;
        }
        if ((*ii).second->createInfo.pTypeCount) {
            delete (*ii).second->createInfo.pTypeCount;
        }
        delete (*ii).second;
    }
}
// WARN : Once freeLayouts() called, any layout ptrs in Region/Set data structure will be invalid
// NOTE : Calls to this function should be wrapped in mutex
static void freeLayouts()
{
    for (unordered_map<XGL_DESCRIPTOR_SET_LAYOUT, LAYOUT_NODE*>::iterator ii=layoutMap.begin(); ii!=layoutMap.end(); ++ii) {
        LAYOUT_NODE* pLayout = (*ii).second;
        GENERIC_HEADER* pTrav = (GENERIC_HEADER*)pLayout->pCreateInfoList;
        while (pTrav) {
            GENERIC_HEADER* pToFree = pTrav;
            pTrav = (GENERIC_HEADER*)pTrav->pNext;
            delete pToFree;
        }
        if (pLayout->pTypes) {
            delete pLayout->pTypes;
        }
        delete pLayout;
    }
}
// Currently clearing a set is removing all previous updates to that set
//  TODO : Validate if this is correct clearing behavior
static void clearDescriptorSet(XGL_DESCRIPTOR_SET set)
{
    SET_NODE* pSet = getSetNode(set);
    if (!pSet) {
        // TODO : Return error
    }
    else {
        loader_platform_thread_lock_mutex(&globalLock);
        freeShadowUpdateTree(pSet);
        loader_platform_thread_unlock_mutex(&globalLock);
    }
}

static void clearDescriptorRegion(XGL_DESCRIPTOR_REGION region)
{
    REGION_NODE* pRegion = getRegionNode(region);
    if (!pRegion) {
        char str[1024];
        sprintf(str, "Unable to find region node for region %p specified in xglClearDescriptorRegion() call", (void*)region);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, region, 0, DRAWSTATE_INVALID_REGION, "DS", str);
    }
    else
    {
        // For every set off of this region, clear it
        SET_NODE* pSet = pRegion->pSets;
        while (pSet) {
            clearDescriptorSet(pSet->set);
        }
    }
}

// Code here to manage the Cmd buffer LL
static GLOBAL_CB_NODE* getCBNode(XGL_CMD_BUFFER cb)
{
    loader_platform_thread_lock_mutex(&globalLock);
    if (cmdBufferMap.find(cb) == cmdBufferMap.end()) {
        loader_platform_thread_unlock_mutex(&globalLock);
        return NULL;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return cmdBufferMap[cb];
}
// Free all CB Nodes
// NOTE : Calls to this function should be wrapped in mutex
static void freeCmdBuffers()
{
    for (unordered_map<XGL_CMD_BUFFER, GLOBAL_CB_NODE*>::iterator ii=cmdBufferMap.begin(); ii!=cmdBufferMap.end(); ++ii) {
        while (!(*ii).second->pCmds.empty()) {
            delete (*ii).second->pCmds.back();
            (*ii).second->pCmds.pop_back();
        }
        delete (*ii).second;
    }
}
static void addCmd(GLOBAL_CB_NODE* pCB, const CMD_TYPE cmd)
{
    CMD_NODE* pCmd = new CMD_NODE;
    if (pCmd) {
        // init cmd node and append to end of cmd LL
        memset(pCmd, 0, sizeof(CMD_NODE));
        pCmd->cmdNumber = ++pCB->numCmds;
        pCmd->type = cmd;
        pCB->pCmds.push_back(pCmd);
    }
    else {
        char str[1024];
        sprintf(str, "Out of memory while attempting to allocate new CMD_NODE for cmdBuffer %p", (void*)pCB->cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pCB->cmdBuffer, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
    }
}
static void resetCB(const XGL_CMD_BUFFER cb)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB) {
        while (!pCB->pCmds.empty()) {
            delete pCB->pCmds.back();
            pCB->pCmds.pop_back();
        }
        // Reset CB state
        XGL_FLAGS saveFlags = pCB->flags;
        XGL_QUEUE_TYPE saveQT = pCB->queueType;
        memset(pCB, 0, sizeof(GLOBAL_CB_NODE));
        pCB->cmdBuffer = cb;
        pCB->flags = saveFlags;
        pCB->queueType = saveQT;
        pCB->lastVtxBinding = MAX_BINDING;
    }
}
// Set the last bound dynamic state of given type
// TODO : Need to track this per cmdBuffer and correlate cmdBuffer for Draw w/ last bound for that cmdBuffer?
static void setLastBoundDynamicState(const XGL_CMD_BUFFER cmdBuffer, const XGL_DYNAMIC_STATE_OBJECT state, const XGL_STATE_BIND_POINT sType)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        loader_platform_thread_lock_mutex(&globalLock);
        addCmd(pCB, CMD_BINDDYNAMICSTATEOBJECT);
        if (dynamicStateMap.find(state) == dynamicStateMap.end()) {
            char str[1024];
            sprintf(str, "Unable to find dynamic state object %p, was it ever created?", (void*)state);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, state, 0, DRAWSTATE_INVALID_DYNAMIC_STATE_OBJECT, "DS", str);
        }
        else {
            pCB->lastBoundDynamicState[sType] = dynamicStateMap[state];
            g_lastBoundDynamicState[sType] = dynamicStateMap[state];
        }
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
}
// Print the last bound Gfx Pipeline
static void printPipeline(const XGL_CMD_BUFFER cb)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB) {
        PIPELINE_NODE *pPipeTrav = getPipeline(pCB->lastBoundPipeline);
        if (!pPipeTrav) {
            // nothing to print
        }
        else {
            string pipeStr = xgl_print_xgl_graphics_pipeline_create_info(pPipeTrav->pCreateTree, "{DS}").c_str();
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", pipeStr.c_str());
        }
    }
}
// Common Dot dumping code
static void dsCoreDumpDot(const XGL_DESCRIPTOR_SET ds, FILE* pOutFile)
{
    SET_NODE* pSet = getSetNode(ds);
    if (pSet) {
        REGION_NODE* pRegion = getRegionNode(pSet->region);
        char tmp_str[4*1024];
        fprintf(pOutFile, "subgraph cluster_DescriptorRegion\n{\nlabel=\"Descriptor Region\"\n");
        sprintf(tmp_str, "Region (%p)", pRegion->region);
        char* pGVstr = xgl_gv_print_xgl_descriptor_region_create_info(&pRegion->createInfo, tmp_str);
        fprintf(pOutFile, "%s", pGVstr);
        free(pGVstr);
        fprintf(pOutFile, "subgraph cluster_DescriptorSet\n{\nlabel=\"Descriptor Set (%p)\"\n", pSet->set);
        sprintf(tmp_str, "Descriptor Set (%p)", pSet->set);
        LAYOUT_NODE* pLayout = pSet->pLayouts;
        uint32_t layout_index = 0;
        while (pLayout) {
            ++layout_index;
            sprintf(tmp_str, "LAYOUT%u", layout_index);
            pGVstr = xgl_gv_print_xgl_descriptor_set_layout_create_info(pLayout->pCreateInfoList, tmp_str);
            fprintf(pOutFile, "%s", pGVstr);
            free(pGVstr);
            pLayout = pLayout->pPriorSetLayout;
            if (pLayout) {
                fprintf(pOutFile, "\"%s\" -> \"LAYOUT%u\" [];\n", tmp_str, layout_index+1);
            }
        }
        if (pSet->pUpdateStructs) {
            pGVstr = dynamic_gv_display(pSet->pUpdateStructs, "Descriptor Updates");
            fprintf(pOutFile, "%s", pGVstr);
            free(pGVstr);
        }
        if (pSet->ppDescriptors) {
            //void* pDesc = NULL;
            fprintf(pOutFile, "\"DESCRIPTORS\" [\nlabel=<<TABLE BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\"> <TR><TD COLSPAN=\"2\" PORT=\"desc\">DESCRIPTORS</TD></TR>");
            uint32_t i = 0;
            for (i=0; i < pSet->descriptorCount; i++) {
                if (pSet->ppDescriptors[i]) {
                    fprintf(pOutFile, "<TR><TD PORT=\"slot%u\">slot%u</TD><TD>%s</TD></TR>", i, i, string_XGL_STRUCTURE_TYPE(pSet->ppDescriptors[i]->sType));
                }
            }
#define NUM_COLORS 7
            vector<string> edgeColors;
            edgeColors.push_back("0000ff");
            edgeColors.push_back("ff00ff");
            edgeColors.push_back("ffff00");
            edgeColors.push_back("00ff00");
            edgeColors.push_back("000000");
            edgeColors.push_back("00ffff");
            edgeColors.push_back("ff0000");
            uint32_t colorIdx = 0;
            fprintf(pOutFile, "</TABLE>>\n];\n");
            // Now add the views that are mapped to active descriptors
            XGL_UPDATE_SAMPLERS* pUS = NULL;
            XGL_UPDATE_SAMPLER_TEXTURES* pUST = NULL;
            XGL_UPDATE_IMAGES* pUI = NULL;
            XGL_UPDATE_BUFFERS* pUB = NULL;
            XGL_UPDATE_AS_COPY* pUAC = NULL;
            XGL_SAMPLER_CREATE_INFO* pSCI = NULL;
            XGL_IMAGE_VIEW_CREATE_INFO* pIVCI = NULL;
            XGL_BUFFER_VIEW_CREATE_INFO* pBVCI = NULL;
            void** ppNextPtr = NULL;
            void* pSaveNext = NULL;
            for (i=0; i < pSet->descriptorCount; i++) {
                if (pSet->ppDescriptors[i]) {
                    switch (pSet->ppDescriptors[i]->sType)
                    {
                        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
                            pUS = (XGL_UPDATE_SAMPLERS*)pSet->ppDescriptors[i];
                            pSCI = getSamplerCreateInfo(pUS->pSamplers[i-pUS->index]);
                            if (pSCI) {
                                sprintf(tmp_str, "SAMPLER%u", i);
                                fprintf(pOutFile, "%s", xgl_gv_print_xgl_sampler_create_info(pSCI, tmp_str));
                                fprintf(pOutFile, "\"DESCRIPTORS\":slot%u -> \"%s\" [color=\"#%s\"];\n", i, tmp_str, edgeColors[colorIdx].c_str());
                            }
                            break;
                        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
                            pUST = (XGL_UPDATE_SAMPLER_TEXTURES*)pSet->ppDescriptors[i];
                            pSCI = getSamplerCreateInfo(pUST->pSamplerImageViews[i-pUST->index].pSampler);
                            if (pSCI) {
                                sprintf(tmp_str, "SAMPLER%u", i);
                                fprintf(pOutFile, "%s", xgl_gv_print_xgl_sampler_create_info(pSCI, tmp_str));
                                fprintf(pOutFile, "\"DESCRIPTORS\":slot%u -> \"%s\" [color=\"#%s\"];\n", i, tmp_str, edgeColors[colorIdx].c_str());
                            }
                            pIVCI = getImageViewCreateInfo(pUST->pSamplerImageViews[i-pUST->index].pImageView->view);
                            if (pIVCI) {
                                sprintf(tmp_str, "IMAGE_VIEW%u", i);
                                fprintf(pOutFile, "%s", xgl_gv_print_xgl_image_view_create_info(pIVCI, tmp_str));
                                fprintf(pOutFile, "\"DESCRIPTORS\":slot%u -> \"%s\" [color=\"#%s\"];\n", i, tmp_str, edgeColors[colorIdx].c_str());
                            }
                            break;
                        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
                            pUI = (XGL_UPDATE_IMAGES*)pSet->ppDescriptors[i];
                            pIVCI = getImageViewCreateInfo(pUI->pImageViews[i-pUI->index]->view);
                            if (pIVCI) {
                                sprintf(tmp_str, "IMAGE_VIEW%u", i);
                                fprintf(pOutFile, "%s", xgl_gv_print_xgl_image_view_create_info(pIVCI, tmp_str));
                                fprintf(pOutFile, "\"DESCRIPTORS\":slot%u -> \"%s\" [color=\"#%s\"];\n", i, tmp_str, edgeColors[colorIdx].c_str());
                            }
                            break;
                        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
                            pUB = (XGL_UPDATE_BUFFERS*)pSet->ppDescriptors[i];
                            pBVCI = getBufferViewCreateInfo(pUB->pBufferViews[i-pUB->index]->view);
                            if (pBVCI) {
                                sprintf(tmp_str, "BUFFER_VIEW%u", i);
                                fprintf(pOutFile, "%s", xgl_gv_print_xgl_buffer_view_create_info(pBVCI, tmp_str));
                                fprintf(pOutFile, "\"DESCRIPTORS\":slot%u -> \"%s\" [color=\"#%s\"];\n", i, tmp_str, edgeColors[colorIdx].c_str());
                            }
                            break;
                        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
                            pUAC = (XGL_UPDATE_AS_COPY*)pSet->ppDescriptors[i];
                            // TODO : Need to validate this code
                            // Save off pNext and set to NULL while printing this struct, then restore it
                            ppNextPtr = (void**)&pUAC->pNext;
                            pSaveNext = *ppNextPtr;
                            *ppNextPtr = NULL;
                            sprintf(tmp_str, "UPDATE_AS_COPY%u", i);
                            fprintf(pOutFile, "%s", xgl_gv_print_xgl_update_as_copy(pUAC, tmp_str));
                            fprintf(pOutFile, "\"DESCRIPTORS\":slot%u -> \"%s\" [color=\"#%s\"];\n", i, tmp_str, edgeColors[colorIdx].c_str());
                            // Restore next ptr
                            *ppNextPtr = pSaveNext;
                            break;
                        default:
                            break;
                    }
                    colorIdx = (colorIdx+1) % NUM_COLORS;
                }
            }
        }
        fprintf(pOutFile, "}\n");
        fprintf(pOutFile, "}\n");
    }
}
// Dump subgraph w/ DS info
static void dsDumpDot(const XGL_CMD_BUFFER cb, FILE* pOutFile)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB && pCB->lastBoundDescriptorSet) {
        dsCoreDumpDot(pCB->lastBoundDescriptorSet, pOutFile);
    }
}
// Dump a GraphViz dot file showing the Cmd Buffers
static void cbDumpDotFile(string outFileName)
{
    // Print CB Chain for each CB
    FILE* pOutFile;
    pOutFile = fopen(outFileName.c_str(), "w");
    fprintf(pOutFile, "digraph g {\ngraph [\nrankdir = \"TB\"\n];\nnode [\nfontsize = \"16\"\nshape = \"plaintext\"\n];\nedge [\n];\n");
    fprintf(pOutFile, "subgraph cluster_cmdBuffers\n{\nlabel=\"Command Buffers\"\n");
    GLOBAL_CB_NODE* pCB = NULL;
    for (uint32_t i = 0; i < NUM_COMMAND_BUFFERS_TO_DISPLAY; i++) {
        pCB = g_pLastTouchedCB[i];
        if (pCB) {
            fprintf(pOutFile, "subgraph cluster_cmdBuffer%u\n{\nlabel=\"Command Buffer #%u\"\n", i, i);
            uint32_t instNum = 0;
            for (vector<CMD_NODE*>::iterator ii=pCB->pCmds.begin(); ii!=pCB->pCmds.end(); ++ii) {
                if (instNum) {
                    fprintf(pOutFile, "\"CB%pCMD%u\" -> \"CB%pCMD%u\" [];\n", (void*)pCB->cmdBuffer, instNum-1, (void*)pCB->cmdBuffer, instNum);
                }
                if (pCB == g_lastGlobalCB) {
                    fprintf(pOutFile, "\"CB%pCMD%u\" [\nlabel=<<TABLE BGCOLOR=\"#00FF00\" BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\"> <TR><TD>CMD#</TD><TD>%u</TD></TR><TR><TD>CMD Type</TD><TD>%s</TD></TR></TABLE>>\n];\n", (void*)pCB->cmdBuffer, instNum, instNum, cmdTypeToString((*ii)->type).c_str());
                }
                else {
                    fprintf(pOutFile, "\"CB%pCMD%u\" [\nlabel=<<TABLE BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\"> <TR><TD>CMD#</TD><TD>%u</TD></TR><TR><TD>CMD Type</TD><TD>%s</TD></TR></TABLE>>\n];\n", (void*)pCB->cmdBuffer, instNum, instNum, cmdTypeToString((*ii)->type).c_str());
                }
                ++instNum;
            }
            fprintf(pOutFile, "}\n");
        }
    }
    fprintf(pOutFile, "}\n");
    fprintf(pOutFile, "}\n"); // close main graph "g"
    fclose(pOutFile);
}
// Dump a GraphViz dot file showing the pipeline for last bound global state
static void dumpGlobalDotFile(char *outFileName)
{
    PIPELINE_NODE *pPipeTrav = g_lastBoundPipeline;
    if (pPipeTrav) {
        FILE* pOutFile;
        pOutFile = fopen(outFileName, "w");
        fprintf(pOutFile, "digraph g {\ngraph [\nrankdir = \"TB\"\n];\nnode [\nfontsize = \"16\"\nshape = \"plaintext\"\n];\nedge [\n];\n");
        fprintf(pOutFile, "subgraph cluster_dynamicState\n{\nlabel=\"Dynamic State\"\n");
        char* pGVstr = NULL;
        for (uint32_t i = 0; i < XGL_NUM_STATE_BIND_POINT; i++) {
            if (g_lastBoundDynamicState[i] && g_lastBoundDynamicState[i]->pCreateInfo) {
                pGVstr = dynamic_gv_display(g_lastBoundDynamicState[i]->pCreateInfo, string_XGL_STATE_BIND_POINT((XGL_STATE_BIND_POINT)i));
                fprintf(pOutFile, "%s", pGVstr);
                free(pGVstr);
            }
        }
        fprintf(pOutFile, "}\n"); // close dynamicState subgraph
        fprintf(pOutFile, "subgraph cluster_PipelineStateObject\n{\nlabel=\"Pipeline State Object\"\n");
        pGVstr = xgl_gv_print_xgl_graphics_pipeline_create_info(pPipeTrav->pCreateTree, "PSO HEAD");
        fprintf(pOutFile, "%s", pGVstr);
        free(pGVstr);
        fprintf(pOutFile, "}\n");
        dsCoreDumpDot(g_lastBoundDescriptorSet, pOutFile);
        fprintf(pOutFile, "}\n"); // close main graph "g"
        fclose(pOutFile);
    }
}
// Dump a GraphViz dot file showing the pipeline for a given CB
static void dumpDotFile(const XGL_CMD_BUFFER cb, string outFileName)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB) {
        PIPELINE_NODE *pPipeTrav = getPipeline(pCB->lastBoundPipeline);
        if (pPipeTrav) {
            FILE* pOutFile;
            pOutFile = fopen(outFileName.c_str(), "w");
            fprintf(pOutFile, "digraph g {\ngraph [\nrankdir = \"TB\"\n];\nnode [\nfontsize = \"16\"\nshape = \"plaintext\"\n];\nedge [\n];\n");
            fprintf(pOutFile, "subgraph cluster_dynamicState\n{\nlabel=\"Dynamic State\"\n");
            char* pGVstr = NULL;
            for (uint32_t i = 0; i < XGL_NUM_STATE_BIND_POINT; i++) {
                if (pCB->lastBoundDynamicState[i] && pCB->lastBoundDynamicState[i]->pCreateInfo) {
                    pGVstr = dynamic_gv_display(pCB->lastBoundDynamicState[i]->pCreateInfo, string_XGL_STATE_BIND_POINT((XGL_STATE_BIND_POINT)i));
                    fprintf(pOutFile, "%s", pGVstr);
                    free(pGVstr);
                }
            }
            fprintf(pOutFile, "}\n"); // close dynamicState subgraph
            fprintf(pOutFile, "subgraph cluster_PipelineStateObject\n{\nlabel=\"Pipeline State Object\"\n");
            pGVstr = xgl_gv_print_xgl_graphics_pipeline_create_info(pPipeTrav->pCreateTree, "PSO HEAD");
            fprintf(pOutFile, "%s", pGVstr);
            free(pGVstr);
            fprintf(pOutFile, "}\n");
            dsDumpDot(cb, pOutFile);
            fprintf(pOutFile, "}\n"); // close main graph "g"
            fclose(pOutFile);
        }
    }
}
// Verify VB Buffer binding
static void validateVBBinding(const XGL_CMD_BUFFER cb)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB && pCB->lastBoundPipeline) {
        // First verify that we have a Node for bound pipeline
        PIPELINE_NODE *pPipeTrav = getPipeline(pCB->lastBoundPipeline);
        char str[1024];
        if (!pPipeTrav) {
            sprintf(str, "Can't find last bound Pipeline %p!", (void*)pCB->lastBoundPipeline);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NO_PIPELINE_BOUND, "DS", str);
        }
        else {
            // Verify Vtx binding
            if (MAX_BINDING != pCB->lastVtxBinding) {
                if (pCB->lastVtxBinding >= pPipeTrav->vtxBindingCount) {
                    if (0 == pPipeTrav->vtxBindingCount) {
                        sprintf(str, "Vtx Buffer Index %u was bound, but no vtx buffers are attached to PSO.", pCB->lastVtxBinding);
                        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_VTX_INDEX_OUT_OF_BOUNDS, "DS", str);
                    }
                    else {
                        sprintf(str, "Vtx binding Index of %u exceeds PSO pVertexBindingDescriptions max array index of %u.", pCB->lastVtxBinding, (pPipeTrav->vtxBindingCount - 1));
                        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_VTX_INDEX_OUT_OF_BOUNDS, "DS", str);
                    }
                }
                else {
                    string tmpStr = xgl_print_xgl_vertex_input_binding_description(&pPipeTrav->pVertexBindingDescriptions[pCB->lastVtxBinding], "{DS}INFO : ").c_str();
                    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmpStr.c_str());
                }
            }
        }
    }
}
// Print details of DS config to stdout
static void printDSConfig(const XGL_CMD_BUFFER cb)
{
    char tmp_str[1024];
    char ds_config_str[1024*256] = {0}; // TODO : Currently making this buffer HUGE w/o overrun protection.  Need to be smarter, start smaller, and grow as needed.
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB) {
        SET_NODE* pSet = getSetNode(pCB->lastBoundDescriptorSet);
        REGION_NODE* pRegion = getRegionNode(pSet->region);
        // Print out region details
        sprintf(tmp_str, "Details for region %p.", (void*)pRegion->region);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmp_str);
        string regionStr = xgl_print_xgl_descriptor_region_create_info(&pRegion->createInfo, " ");
        sprintf(ds_config_str, "%s", regionStr.c_str());
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", ds_config_str);
        // Print out set details
        char prefix[10];
        uint32_t index = 0;
        sprintf(tmp_str, "Details for descriptor set %p.", (void*)pSet->set);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmp_str);
        LAYOUT_NODE* pLayout = pSet->pLayouts;
        while (pLayout) {
            // Print layout details
            sprintf(tmp_str, "Layout #%u, (object %p) for DS %p.", index+1, (void*)pLayout->layout, (void*)pSet->set);
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmp_str);
            sprintf(prefix, "  [L%u] ", index);
            string DSLstr = xgl_print_xgl_descriptor_set_layout_create_info(&pLayout->pCreateInfoList[0], prefix).c_str();
            sprintf(ds_config_str, "%s", DSLstr.c_str());
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", ds_config_str);
            pLayout = pLayout->pPriorSetLayout;
            index++;
        }
        GENERIC_HEADER* pUpdate = pSet->pUpdateStructs;
        if (pUpdate) {
            sprintf(tmp_str, "Update Chain [UC] for descriptor set %p:", (void*)pSet->set);
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmp_str);
            sprintf(prefix, "  [UC] ");
            sprintf(ds_config_str, "%s", dynamic_display(pUpdate, prefix).c_str());
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", ds_config_str);
            // TODO : If there is a "view" associated with this update, print CI for that view
        }
        else {
            sprintf(tmp_str, "No Update Chain for descriptor set %p (xglUpdateDescriptors has not been called)", (void*)pSet->set);
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmp_str);
        }
    }
}

static void printCB(const XGL_CMD_BUFFER cb)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cb);
    if (pCB) {
        char str[1024];
        sprintf(str, "Cmds in CB %p", (void*)cb);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", str);
        for (vector<CMD_NODE*>::iterator ii=pCB->pCmds.begin(); ii!=pCB->pCmds.end(); ++ii) {
            sprintf(str, "  CMD#%lu: %s", (*ii)->cmdNumber, cmdTypeToString((*ii)->type).c_str());
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cb, 0, DRAWSTATE_NONE, "DS", str);
        }
    }
    else {
        // Nothing to print
    }
}


static void synchAndPrintDSConfig(const XGL_CMD_BUFFER cb)
{
    printDSConfig(cb);
    printPipeline(cb);
    printDynamicState(cb);
    static int autoDumpOnce = 0;
    if (autoDumpOnce) {
        autoDumpOnce = 0;
        dumpDotFile(cb, "pipeline_dump.dot");
        cbDumpDotFile("cb_dump.dot");
#if defined(_WIN32)
// FIXME: NEED WINDOWS EQUIVALENT
#else // WIN32
        // Convert dot to svg if dot available
        if(access( "/usr/bin/dot", X_OK) != -1) {
            system("/usr/bin/dot pipeline_dump.dot -Tsvg -o pipeline_dump.svg");
        }
#endif // WIN32
    }
}

static void initDrawState(void)
{
    const char *strOpt;
    // initialize DrawState options
    getLayerOptionEnum("DrawStateReportLevel", (uint32_t *) &g_reportingLevel);
    g_actionIsDefault = getLayerOptionEnum("DrawStateDebugAction", (uint32_t *) &g_debugAction);

    if (g_debugAction & XGL_DBG_LAYER_ACTION_LOG_MSG)
    {
        strOpt = getLayerOption("DrawStateLogFilename");
        if (strOpt)
        {
            g_logFile = fopen(strOpt, "w");
        }
        if (g_logFile == NULL)
            g_logFile = stdout;
    }
    // initialize Layer dispatch table
    // TODO handle multiple GPUs
    xglGetProcAddrType fpNextGPA;
    fpNextGPA = pCurObj->pGPA;
    assert(fpNextGPA);

    layer_initialize_dispatch_table(&nextTable, fpNextGPA, (XGL_PHYSICAL_GPU) pCurObj->nextObject);

    xglGetProcAddrType fpGetProcAddr = (xglGetProcAddrType)fpNextGPA((XGL_PHYSICAL_GPU) pCurObj->nextObject, (char *) "xglGetProcAddr");
    nextTable.GetProcAddr = fpGetProcAddr;

    if (!globalLockInitialized)
    {
        // TODO/TBD: Need to delete this mutex sometime.  How???  One
        // suggestion is to call this during xglCreateInstance(), and then we
        // can clean it up during xglDestroyInstance().  However, that requires
        // that the layer have per-instance locks.  We need to come back and
        // address this soon.
        loader_platform_thread_create_mutex(&globalLock);
        globalLockInitialized = 1;
    }
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDevice(XGL_PHYSICAL_GPU gpu, const XGL_DEVICE_CREATE_INFO* pCreateInfo, XGL_DEVICE* pDevice)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);
    XGL_RESULT result = nextTable.CreateDevice((XGL_PHYSICAL_GPU)gpuw->nextObject, pCreateInfo, pDevice);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDestroyDevice(XGL_DEVICE device)
{
    // Free all the memory
    loader_platform_thread_lock_mutex(&globalLock);
    freePipelines();
    freeSamplers();
    freeImages();
    freeBuffers();
    freeCmdBuffers();
    freeDynamicState();
    freeRegions();
    freeLayouts();
    loader_platform_thread_unlock_mutex(&globalLock);
    XGL_RESULT result = nextTable.DestroyDevice(device);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEnumerateLayers(XGL_PHYSICAL_GPU gpu, size_t maxLayerCount, size_t maxStringSize, size_t* pOutLayerCount, char* const* pOutLayers, void* pReserved)
{
    if (gpu != NULL)
    {
        XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
        pCurObj = gpuw;
        loader_platform_thread_once(&g_initOnce, initDrawState);
        XGL_RESULT result = nextTable.EnumerateLayers((XGL_PHYSICAL_GPU)gpuw->nextObject, maxLayerCount, maxStringSize, pOutLayerCount, pOutLayers, pReserved);
        return result;
    } else
    {
        if (pOutLayerCount == NULL || pOutLayers == NULL || pOutLayers[0] == NULL)
            return XGL_ERROR_INVALID_POINTER;
        // This layer compatible with all GPUs
        *pOutLayerCount = 1;
        strncpy((char *) pOutLayers[0], "DrawState", maxStringSize);
        return XGL_SUCCESS;
    }
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglQueueSubmit(XGL_QUEUE queue, uint32_t cmdBufferCount, const XGL_CMD_BUFFER* pCmdBuffers, uint32_t memRefCount, const XGL_MEMORY_REF* pMemRefs, XGL_FENCE fence)
{
    for (uint32_t i=0; i < cmdBufferCount; i++) {
        // Validate that cmd buffers have been updated
    }
    XGL_RESULT result = nextTable.QueueSubmit(queue, cmdBufferCount, pCmdBuffers, memRefCount, pMemRefs, fence);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDestroyObject(XGL_OBJECT object)
{
    // TODO : When wrapped objects (such as dynamic state) are destroyed, need to clean up memory
    XGL_RESULT result = nextTable.DestroyObject(object);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateBufferView(XGL_DEVICE device, const XGL_BUFFER_VIEW_CREATE_INFO* pCreateInfo, XGL_BUFFER_VIEW* pView)
{
    XGL_RESULT result = nextTable.CreateBufferView(device, pCreateInfo, pView);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        BUFFER_NODE* pNewNode = new BUFFER_NODE;
        pNewNode->buffer = *pView;
        pNewNode->createInfo = *pCreateInfo;
        bufferMap[*pView] = pNewNode;
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateImageView(XGL_DEVICE device, const XGL_IMAGE_VIEW_CREATE_INFO* pCreateInfo, XGL_IMAGE_VIEW* pView)
{
    XGL_RESULT result = nextTable.CreateImageView(device, pCreateInfo, pView);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        IMAGE_NODE *pNewNode = new IMAGE_NODE;
        pNewNode->image = *pView;
        pNewNode->createInfo = *pCreateInfo;
        imageMap[*pView] = pNewNode;
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateGraphicsPipeline(XGL_DEVICE device, const XGL_GRAPHICS_PIPELINE_CREATE_INFO* pCreateInfo, XGL_PIPELINE* pPipeline)
{
    XGL_RESULT result = nextTable.CreateGraphicsPipeline(device, pCreateInfo, pPipeline);
    // Create LL HEAD for this Pipeline
    char str[1024];
    sprintf(str, "Created Gfx Pipeline %p", (void*)*pPipeline);
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, (XGL_BASE_OBJECT)pPipeline, 0, DRAWSTATE_NONE, "DS", str);
    loader_platform_thread_lock_mutex(&globalLock);
    PIPELINE_NODE* pPipeNode = new PIPELINE_NODE;
    memset((void*)pPipeNode, 0, sizeof(PIPELINE_NODE));
    pPipeNode->pipeline = *pPipeline;
    initPipeline(pPipeNode, pCreateInfo);
    loader_platform_thread_unlock_mutex(&globalLock);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateSampler(XGL_DEVICE device, const XGL_SAMPLER_CREATE_INFO* pCreateInfo, XGL_SAMPLER* pSampler)
{
    XGL_RESULT result = nextTable.CreateSampler(device, pCreateInfo, pSampler);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        SAMPLER_NODE* pNewNode = new SAMPLER_NODE;
        pNewNode->sampler = *pSampler;
        pNewNode->createInfo = *pCreateInfo;
        sampleMap[*pSampler] = pNewNode;
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDescriptorSetLayout(XGL_DEVICE device, XGL_FLAGS stageFlags, const uint32_t* pSetBindPoints, XGL_DESCRIPTOR_SET_LAYOUT priorSetLayout, const XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO* pSetLayoutInfoList, XGL_DESCRIPTOR_SET_LAYOUT* pSetLayout)
{
    XGL_RESULT result = nextTable.CreateDescriptorSetLayout(device, stageFlags, pSetBindPoints, priorSetLayout, pSetLayoutInfoList, pSetLayout);
    if (XGL_SUCCESS == result) {
        LAYOUT_NODE* pNewNode = new LAYOUT_NODE;
        if (NULL == pNewNode) {
            char str[1024];
            sprintf(str, "Out of memory while attempting to allocate LAYOUT_NODE in xglCreateDescriptorSetLayout()");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, *pSetLayout, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
        }
        memset(pNewNode, 0, sizeof(LAYOUT_NODE));
        // TODO : API Currently missing a count here that we should multiply by struct size
        pNewNode->pCreateInfoList = new XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
        memset((void*)pNewNode->pCreateInfoList, 0, sizeof(XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO));
        void* pCITrav = NULL;
        uint32_t totalCount = 0;
        if (pSetLayoutInfoList) {
            memcpy((void*)pNewNode->pCreateInfoList, pSetLayoutInfoList, sizeof(XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO));
            pCITrav = (void*)pSetLayoutInfoList->pNext;
            totalCount = pSetLayoutInfoList->count;
        }
        void** ppNext = (void**)&pNewNode->pCreateInfoList->pNext;
        while (pCITrav) {
            totalCount += ((XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pCITrav)->count;
            *ppNext = new XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
            memcpy((void*)*ppNext, pCITrav, sizeof(XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO));
            pCITrav = (void*)((XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pCITrav)->pNext;
            ppNext = (void**)&((XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)*ppNext)->pNext;
        }
        if (totalCount > 0) {
            pNewNode->pTypes = new XGL_DESCRIPTOR_TYPE[totalCount];
            XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO* pLCI = (XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pSetLayoutInfoList;
            uint32_t offset = 0;
            uint32_t i = 0;
            while (pLCI) {
                for (i = 0; i < pLCI->count; i++) {
                    pNewNode->pTypes[offset + i] = pLCI->descriptorType;
                }
                offset += i;
                pLCI = (XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pLCI->pNext;
            }
        }
        pNewNode->layout = *pSetLayout;
        pNewNode->stageFlags = stageFlags;
        uint32_t i = (XGL_SHADER_STAGE_FLAGS_ALL == stageFlags) ? 0 : XGL_SHADER_STAGE_COMPUTE;
        for (uint32_t stage = XGL_SHADER_STAGE_FLAGS_COMPUTE_BIT; stage > 0; stage >>= 1) {
            assert(i < XGL_NUM_SHADER_STAGE);
            if (stage & stageFlags)
                pNewNode->shaderStageBindPoints[i] = pSetBindPoints[i];
            i = (i == 0) ? 0 : (i-1);
        }
        pNewNode->startIndex = 0;
        LAYOUT_NODE* pPriorNode = getLayoutNode(priorSetLayout);
        // Point to prior node or NULL if no prior node
        if (NULL != priorSetLayout && pPriorNode == NULL) {
            char str[1024];
            sprintf(str, "Invalid priorSetLayout of %p passed to xglCreateDescriptorSetLayout()", (void*)priorSetLayout);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, priorSetLayout, 0, DRAWSTATE_INVALID_LAYOUT, "DS", str);
        }
        else if (pPriorNode != NULL) { // We have a node for a valid prior layout
            // Get count for prior layout
            pNewNode->startIndex = pPriorNode->endIndex + 1;
        }
        pNewNode->endIndex = pNewNode->startIndex + totalCount - 1;
        assert(pNewNode->endIndex >= pNewNode->startIndex);
        pNewNode->pPriorSetLayout = pPriorNode;
        // Put new node at Head of global Layer list
        loader_platform_thread_lock_mutex(&globalLock);
        layoutMap[*pSetLayout] = pNewNode;
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBeginDescriptorRegionUpdate(XGL_DEVICE device, XGL_DESCRIPTOR_UPDATE_MODE updateMode)
{
    XGL_RESULT result = nextTable.BeginDescriptorRegionUpdate(device, updateMode);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        REGION_NODE* pRegionNode = regionMap.begin()->second;
        if (!pRegionNode) {
            char str[1024];
            sprintf(str, "Unable to find region node");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_INTERNAL_ERROR, "DS", str);
        }
        else {
            pRegionNode->updateActive = 1;
        }
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEndDescriptorRegionUpdate(XGL_DEVICE device, XGL_CMD_BUFFER cmd)
{
    XGL_RESULT result = nextTable.EndDescriptorRegionUpdate(device, cmd);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        REGION_NODE* pRegionNode = regionMap.begin()->second;
        if (!pRegionNode) {
            char str[1024];
            sprintf(str, "Unable to find region node");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_INTERNAL_ERROR, "DS", str);
        }
        else {
            if (!pRegionNode->updateActive) {
                char str[1024];
                sprintf(str, "You must call xglBeginDescriptorRegionUpdate() before this call to xglEndDescriptorRegionUpdate()!");
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_DS_END_WITHOUT_BEGIN, "DS", str);
            }
            else {
                pRegionNode->updateActive = 0;
            }
            pRegionNode->updateActive = 0;
        }
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDescriptorRegion(XGL_DEVICE device, XGL_DESCRIPTOR_REGION_USAGE regionUsage, uint32_t maxSets, const XGL_DESCRIPTOR_REGION_CREATE_INFO* pCreateInfo, XGL_DESCRIPTOR_REGION* pDescriptorRegion)
{
    XGL_RESULT result = nextTable.CreateDescriptorRegion(device, regionUsage, maxSets, pCreateInfo, pDescriptorRegion);
    if (XGL_SUCCESS == result) {
        // Insert this region into Global Region LL at head
        char str[1024];
        sprintf(str, "Created Descriptor Region %p", (void*)*pDescriptorRegion);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, (XGL_BASE_OBJECT)pDescriptorRegion, 0, DRAWSTATE_NONE, "DS", str);
        loader_platform_thread_lock_mutex(&globalLock);
        REGION_NODE* pNewNode = new REGION_NODE;
        if (NULL == pNewNode) {
            char str[1024];
            sprintf(str, "Out of memory while attempting to allocate REGION_NODE in xglCreateDescriptorRegion()");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, (XGL_BASE_OBJECT)*pDescriptorRegion, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
        }
        else {
            memset(pNewNode, 0, sizeof(REGION_NODE));
            XGL_DESCRIPTOR_REGION_CREATE_INFO* pCI = (XGL_DESCRIPTOR_REGION_CREATE_INFO*)&pNewNode->createInfo;
            memcpy((void*)pCI, pCreateInfo, sizeof(XGL_DESCRIPTOR_REGION_CREATE_INFO));
            if (pNewNode->createInfo.count) {
                size_t typeCountSize = pNewNode->createInfo.count * sizeof(XGL_DESCRIPTOR_TYPE_COUNT);
                pNewNode->createInfo.pTypeCount = new XGL_DESCRIPTOR_TYPE_COUNT[typeCountSize];
                memcpy((void*)pNewNode->createInfo.pTypeCount, pCreateInfo->pTypeCount, typeCountSize);
            }
            pNewNode->regionUsage  = regionUsage;
            pNewNode->updateActive = 0;
            pNewNode->maxSets      = maxSets;
            pNewNode->region       = *pDescriptorRegion;
            regionMap[*pDescriptorRegion] = pNewNode;
        }
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    else {
        // Need to do anything if region create fails?
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglClearDescriptorRegion(XGL_DESCRIPTOR_REGION descriptorRegion)
{
    XGL_RESULT result = nextTable.ClearDescriptorRegion(descriptorRegion);
    if (XGL_SUCCESS == result) {
        clearDescriptorRegion(descriptorRegion);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglAllocDescriptorSets(XGL_DESCRIPTOR_REGION descriptorRegion, XGL_DESCRIPTOR_SET_USAGE setUsage, uint32_t count, const XGL_DESCRIPTOR_SET_LAYOUT* pSetLayouts, XGL_DESCRIPTOR_SET* pDescriptorSets, uint32_t* pCount)
{
    XGL_RESULT result = nextTable.AllocDescriptorSets(descriptorRegion, setUsage, count, pSetLayouts, pDescriptorSets, pCount);
    if ((XGL_SUCCESS == result) || (*pCount > 0)) {
        REGION_NODE *pRegionNode = getRegionNode(descriptorRegion);
        if (!pRegionNode) {
            char str[1024];
            sprintf(str, "Unable to find region node for region %p specified in xglAllocDescriptorSets() call", (void*)descriptorRegion);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, descriptorRegion, 0, DRAWSTATE_INVALID_REGION, "DS", str);
        }
        else {
            for (uint32_t i = 0; i < *pCount; i++) {
                char str[1024];
                sprintf(str, "Created Descriptor Set %p", (void*)pDescriptorSets[i]);
                layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, pDescriptorSets[i], 0, DRAWSTATE_NONE, "DS", str);
                // Create new set node and add to head of region nodes
                SET_NODE* pNewNode = new SET_NODE;
                if (NULL == pNewNode) {
                    char str[1024];
                    sprintf(str, "Out of memory while attempting to allocate SET_NODE in xglAllocDescriptorSets()");
                    layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pDescriptorSets[i], 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
                }
                else {
                    memset(pNewNode, 0, sizeof(SET_NODE));
                    // Insert set at head of Set LL for this region
                    pNewNode->pNext = pRegionNode->pSets;
                    pRegionNode->pSets = pNewNode;
                    LAYOUT_NODE* pLayout = getLayoutNode(pSetLayouts[i]);
                    if (NULL == pLayout) {
                        char str[1024];
                        sprintf(str, "Unable to find set layout node for layout %p specified in xglAllocDescriptorSets() call", (void*)pSetLayouts[i]);
                        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pSetLayouts[i], 0, DRAWSTATE_INVALID_LAYOUT, "DS", str);
                    }
                    pNewNode->pLayouts = pLayout;
                    pNewNode->region = descriptorRegion;
                    pNewNode->set = pDescriptorSets[i];
                    pNewNode->setUsage = setUsage;
                    pNewNode->descriptorCount = pLayout->endIndex + 1;
                    if (pNewNode->descriptorCount) {
                        size_t descriptorArraySize = sizeof(GENERIC_HEADER*)*pNewNode->descriptorCount;
                        pNewNode->ppDescriptors = new GENERIC_HEADER*[descriptorArraySize];
                        memset(pNewNode->ppDescriptors, 0, descriptorArraySize);
                    }
                    setMap[pDescriptorSets[i]] = pNewNode;
                }
            }
        }
    }
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglClearDescriptorSets(XGL_DESCRIPTOR_REGION descriptorRegion, uint32_t count, const XGL_DESCRIPTOR_SET* pDescriptorSets)
{
    for (uint32_t i = 0; i < count; i++) {
        clearDescriptorSet(pDescriptorSets[i]);
    }
    nextTable.ClearDescriptorSets(descriptorRegion, count, pDescriptorSets);
}

XGL_LAYER_EXPORT void XGLAPI xglUpdateDescriptors(XGL_DESCRIPTOR_SET descriptorSet, const void* pUpdateChain)
{
    SET_NODE* pSet = getSetNode(descriptorSet);
    if (!dsUpdateActive(descriptorSet)) {
        char str[1024];
        sprintf(str, "You must call xglBeginDescriptorRegionUpdate() before this call to xglUpdateDescriptors()!");
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pSet->region, 0, DRAWSTATE_UPDATE_WITHOUT_BEGIN, "DS", str);
    }
    else {
        // pUpdateChain is a Linked-list of XGL_UPDATE_* structures defining the mappings for the descriptors
        dsUpdate(descriptorSet, (GENERIC_HEADER*)pUpdateChain);
    }

    nextTable.UpdateDescriptors(descriptorSet, pUpdateChain);
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicViewportState(XGL_DEVICE device, const XGL_DYNAMIC_VP_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_VP_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicViewportState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_VIEWPORT);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicRasterState(XGL_DEVICE device, const XGL_DYNAMIC_RS_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_RS_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicRasterState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_RASTER);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicColorBlendState(XGL_DEVICE device, const XGL_DYNAMIC_CB_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_CB_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicColorBlendState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_COLOR_BLEND);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicDepthStencilState(XGL_DEVICE device, const XGL_DYNAMIC_DS_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_DS_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicDepthStencilState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_DEPTH_STENCIL);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateCommandBuffer(XGL_DEVICE device, const XGL_CMD_BUFFER_CREATE_INFO* pCreateInfo, XGL_CMD_BUFFER* pCmdBuffer)
{
    XGL_RESULT result = nextTable.CreateCommandBuffer(device, pCreateInfo, pCmdBuffer);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        GLOBAL_CB_NODE* pCB = new GLOBAL_CB_NODE;
        memset(pCB, 0, sizeof(GLOBAL_CB_NODE));
        pCB->cmdBuffer = *pCmdBuffer;
        pCB->flags = pCreateInfo->flags;
        pCB->queueType = pCreateInfo->queueType;
        pCB->lastVtxBinding = MAX_BINDING;
        cmdBufferMap[*pCmdBuffer] = pCB;
        loader_platform_thread_unlock_mutex(&globalLock);
        updateCBTracking(*pCmdBuffer);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBeginCommandBuffer(XGL_CMD_BUFFER cmdBuffer, const XGL_CMD_BUFFER_BEGIN_INFO* pBeginInfo)
{
    XGL_RESULT result = nextTable.BeginCommandBuffer(cmdBuffer, pBeginInfo);
    if (XGL_SUCCESS == result) {
        GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
        if (pCB) {
            if (CB_NEW != pCB->state)
                resetCB(cmdBuffer);
            pCB->state = CB_UPDATE_ACTIVE;
        }
        else {
            char str[1024];
            sprintf(str, "In xglBeginCommandBuffer() and unable to find CmdBuffer Node for CB %p!", (void*)cmdBuffer);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
        }
        updateCBTracking(cmdBuffer);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEndCommandBuffer(XGL_CMD_BUFFER cmdBuffer)
{
    XGL_RESULT result = nextTable.EndCommandBuffer(cmdBuffer);
    if (XGL_SUCCESS == result) {
        GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
        if (pCB) {
            pCB->state = CB_UPDATE_COMPLETE;
            printCB(cmdBuffer);
        }
        else {
            char str[1024];
            sprintf(str, "In xglEndCommandBuffer() and unable to find CmdBuffer Node for CB %p!", (void*)cmdBuffer);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
        }
        updateCBTracking(cmdBuffer);
        //cbDumpDotFile("cb_dump.dot");
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglResetCommandBuffer(XGL_CMD_BUFFER cmdBuffer)
{
    XGL_RESULT result = nextTable.ResetCommandBuffer(cmdBuffer);
    if (XGL_SUCCESS == result) {
        resetCB(cmdBuffer);
        updateCBTracking(cmdBuffer);
    }
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindPipeline(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, XGL_PIPELINE pipeline)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BINDPIPELINE);
        PIPELINE_NODE* pPN = getPipeline(pipeline);
        if (pPN) {
            pCB->lastBoundPipeline = pipeline;
            loader_platform_thread_lock_mutex(&globalLock);
            g_lastBoundPipeline = pPN;
            loader_platform_thread_unlock_mutex(&globalLock);
        }
        else {
            char str[1024];
            sprintf(str, "Attempt to bind Pipeline %p that doesn't exist!", (void*)pipeline);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pipeline, 0, DRAWSTATE_INVALID_PIPELINE, "DS", str);
        }
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBindPipeline(cmdBuffer, pipelineBindPoint, pipeline);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindPipelineDelta(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, XGL_PIPELINE_DELTA delta)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        // TODO : Handle storing Pipeline Deltas to cmd buffer here
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BINDPIPELINEDELTA);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBindPipelineDelta(cmdBuffer, pipelineBindPoint, delta);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindDynamicStateObject(XGL_CMD_BUFFER cmdBuffer, XGL_STATE_BIND_POINT stateBindPoint, XGL_DYNAMIC_STATE_OBJECT state)
{
    setLastBoundDynamicState(cmdBuffer, state, stateBindPoint);
    nextTable.CmdBindDynamicStateObject(cmdBuffer, stateBindPoint, state);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindDescriptorSet(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, XGL_DESCRIPTOR_SET descriptorSet, const uint32_t* pUserData)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BINDDESCRIPTORSET);
        if (getSetNode(descriptorSet)) {
            if (dsUpdateActive(descriptorSet)) {
                // TODO : This check here needs to be made at QueueSubmit time
/*
                char str[1024];
                sprintf(str, "You must call xglEndDescriptorRegionUpdate(%p) before this call to xglCmdBindDescriptorSet()!", (void*)descriptorSet);
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, descriptorSet, 0, DRAWSTATE_BINDING_DS_NO_END_UPDATE, "DS", str);
*/
            }
            loader_platform_thread_lock_mutex(&globalLock);
            pCB->lastBoundDescriptorSet = descriptorSet;
            g_lastBoundDescriptorSet = descriptorSet;
            loader_platform_thread_unlock_mutex(&globalLock);
            char str[1024];
            sprintf(str, "DS %p bound on pipeline %s", (void*)descriptorSet, string_XGL_PIPELINE_BIND_POINT(pipelineBindPoint));
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, descriptorSet, 0, DRAWSTATE_NONE, "DS", str);
            synchAndPrintDSConfig(cmdBuffer);
        }
        else {
            char str[1024];
            sprintf(str, "Attempt to bind DS %p that doesn't exist!", (void*)descriptorSet);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, descriptorSet, 0, DRAWSTATE_INVALID_SET, "DS", str);
        }
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBindDescriptorSet(cmdBuffer, pipelineBindPoint, descriptorSet, pUserData);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindIndexBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, XGL_INDEX_TYPE indexType)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BINDINDEXBUFFER);
        // TODO : Track idxBuffer binding
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBindIndexBuffer(cmdBuffer, buffer, offset, indexType);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindVertexBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, uint32_t binding)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BINDVERTEXBUFFER);
        pCB->lastVtxBinding = binding;
        validateVBBinding(cmdBuffer);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBindVertexBuffer(cmdBuffer, buffer, offset, binding);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDraw(XGL_CMD_BUFFER cmdBuffer, uint32_t firstVertex, uint32_t vertexCount, uint32_t firstInstance, uint32_t instanceCount)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DRAW);
        pCB->drawCount[DRAW]++;
        char str[1024];
        sprintf(str, "xglCmdDraw() call #%lu, reporting DS state:", g_drawCount[DRAW]++);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
        synchAndPrintDSConfig(cmdBuffer);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDraw(cmdBuffer, firstVertex, vertexCount, firstInstance, instanceCount);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDrawIndexed(XGL_CMD_BUFFER cmdBuffer, uint32_t firstIndex, uint32_t indexCount, int32_t vertexOffset, uint32_t firstInstance, uint32_t instanceCount)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DRAWINDEXED);
        pCB->drawCount[DRAW_INDEXED]++;
        char str[1024];
        sprintf(str, "xglCmdDrawIndexed() call #%lu, reporting DS state:", g_drawCount[DRAW_INDEXED]++);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
        synchAndPrintDSConfig(cmdBuffer);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDrawIndexed(cmdBuffer, firstIndex, indexCount, vertexOffset, firstInstance, instanceCount);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDrawIndirect(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, uint32_t count, uint32_t stride)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DRAWINDIRECT);
        pCB->drawCount[DRAW_INDIRECT]++;
        char str[1024];
        sprintf(str, "xglCmdDrawIndirect() call #%lu, reporting DS state:", g_drawCount[DRAW_INDIRECT]++);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
        synchAndPrintDSConfig(cmdBuffer);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDrawIndirect(cmdBuffer, buffer, offset, count, stride);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDrawIndexedIndirect(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, uint32_t count, uint32_t stride)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DRAWINDEXEDINDIRECT);
        pCB->drawCount[DRAW_INDEXED_INDIRECT]++;
        char str[1024];
        sprintf(str, "xglCmdDrawIndexedIndirect() call #%lu, reporting DS state:", g_drawCount[DRAW_INDEXED_INDIRECT]++);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
        synchAndPrintDSConfig(cmdBuffer);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDrawIndexedIndirect(cmdBuffer, buffer, offset, count, stride);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDispatch(XGL_CMD_BUFFER cmdBuffer, uint32_t x, uint32_t y, uint32_t z)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DISPATCH);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDispatch(cmdBuffer, x, y, z);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDispatchIndirect(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DISPATCHINDIRECT);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDispatchIndirect(cmdBuffer, buffer, offset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER srcBuffer, XGL_BUFFER destBuffer, uint32_t regionCount, const XGL_BUFFER_COPY* pRegions)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_COPYBUFFER);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdCopyBuffer(cmdBuffer, srcBuffer, destBuffer, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyImage(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_IMAGE destImage, uint32_t regionCount, const XGL_IMAGE_COPY* pRegions)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_COPYIMAGE);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdCopyImage(cmdBuffer, srcImage, destImage, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyBufferToImage(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER srcBuffer, XGL_IMAGE destImage, uint32_t regionCount, const XGL_BUFFER_IMAGE_COPY* pRegions)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_COPYBUFFERTOIMAGE);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdCopyBufferToImage(cmdBuffer, srcBuffer, destImage, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyImageToBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_BUFFER destBuffer, uint32_t regionCount, const XGL_BUFFER_IMAGE_COPY* pRegions)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_COPYIMAGETOBUFFER);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdCopyImageToBuffer(cmdBuffer, srcImage, destBuffer, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCloneImageData(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_IMAGE_LAYOUT srcImageLayout, XGL_IMAGE destImage, XGL_IMAGE_LAYOUT destImageLayout)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_CLONEIMAGEDATA);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdCloneImageData(cmdBuffer, srcImage, srcImageLayout, destImage, destImageLayout);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdUpdateBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset, XGL_GPU_SIZE dataSize, const uint32_t* pData)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_UPDATEBUFFER);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdUpdateBuffer(cmdBuffer, destBuffer, destOffset, dataSize, pData);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdFillBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset, XGL_GPU_SIZE fillSize, uint32_t data)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_FILLBUFFER);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdFillBuffer(cmdBuffer, destBuffer, destOffset, fillSize, data);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdClearColorImage(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE image, const float color[4], uint32_t rangeCount, const XGL_IMAGE_SUBRESOURCE_RANGE* pRanges)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_CLEARCOLORIMAGE);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdClearColorImage(cmdBuffer, image, color, rangeCount, pRanges);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdClearColorImageRaw(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE image, const uint32_t color[4], uint32_t rangeCount, const XGL_IMAGE_SUBRESOURCE_RANGE* pRanges)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_CLEARCOLORIMAGERAW);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdClearColorImageRaw(cmdBuffer, image, color, rangeCount, pRanges);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdClearDepthStencil(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE image, float depth, uint32_t stencil, uint32_t rangeCount, const XGL_IMAGE_SUBRESOURCE_RANGE* pRanges)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_CLEARDEPTHSTENCIL);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdClearDepthStencil(cmdBuffer, image, depth, stencil, rangeCount, pRanges);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdResolveImage(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_IMAGE destImage, uint32_t rectCount, const XGL_IMAGE_RESOLVE* pRects)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_RESOLVEIMAGE);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdResolveImage(cmdBuffer, srcImage, destImage, rectCount, pRects);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdSetEvent(XGL_CMD_BUFFER cmdBuffer, XGL_EVENT event, XGL_SET_EVENT pipeEvent)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_SETEVENT);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdSetEvent(cmdBuffer, event, pipeEvent);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdResetEvent(XGL_CMD_BUFFER cmdBuffer, XGL_EVENT event)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_RESETEVENT);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdResetEvent(cmdBuffer, event);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdWaitEvents(XGL_CMD_BUFFER cmdBuffer, const XGL_EVENT_WAIT_INFO* pWaitInfo)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_WAITEVENTS);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdWaitEvents(cmdBuffer, pWaitInfo);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdPipelineBarrier(XGL_CMD_BUFFER cmdBuffer, const XGL_PIPELINE_BARRIER* pBarrier)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_PIPELINEBARRIER);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdPipelineBarrier(cmdBuffer, pBarrier);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBeginQuery(XGL_CMD_BUFFER cmdBuffer, XGL_QUERY_POOL queryPool, uint32_t slot, XGL_FLAGS flags)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BEGINQUERY);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBeginQuery(cmdBuffer, queryPool, slot, flags);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdEndQuery(XGL_CMD_BUFFER cmdBuffer, XGL_QUERY_POOL queryPool, uint32_t slot)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_ENDQUERY);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdEndQuery(cmdBuffer, queryPool, slot);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdResetQueryPool(XGL_CMD_BUFFER cmdBuffer, XGL_QUERY_POOL queryPool, uint32_t startQuery, uint32_t queryCount)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_RESETQUERYPOOL);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdResetQueryPool(cmdBuffer, queryPool, startQuery, queryCount);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdWriteTimestamp(XGL_CMD_BUFFER cmdBuffer, XGL_TIMESTAMP_TYPE timestampType, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_WRITETIMESTAMP);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdWriteTimestamp(cmdBuffer, timestampType, destBuffer, destOffset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdInitAtomicCounters(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t startCounter, uint32_t counterCount, const uint32_t* pData)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_INITATOMICCOUNTERS);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdInitAtomicCounters(cmdBuffer, pipelineBindPoint, startCounter, counterCount, pData);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdLoadAtomicCounters(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t startCounter, uint32_t counterCount, XGL_BUFFER srcBuffer, XGL_GPU_SIZE srcOffset)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_LOADATOMICCOUNTERS);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdLoadAtomicCounters(cmdBuffer, pipelineBindPoint, startCounter, counterCount, srcBuffer, srcOffset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdSaveAtomicCounters(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t startCounter, uint32_t counterCount, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_SAVEATOMICCOUNTERS);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdSaveAtomicCounters(cmdBuffer, pipelineBindPoint, startCounter, counterCount, destBuffer, destOffset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBeginRenderPass(XGL_CMD_BUFFER cmdBuffer, XGL_RENDER_PASS renderPass)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_BEGINRENDERPASS);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdBeginRenderPass(cmdBuffer, renderPass);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdEndRenderPass(XGL_CMD_BUFFER cmdBuffer, XGL_RENDER_PASS renderPass)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_ENDRENDERPASS);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdEndRenderPass(cmdBuffer, renderPass);
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgRegisterMsgCallback(XGL_DBG_MSG_CALLBACK_FUNCTION pfnMsgCallback, void* pUserData)
{
    // This layer intercepts callbacks
    XGL_LAYER_DBG_FUNCTION_NODE* pNewDbgFuncNode = (XGL_LAYER_DBG_FUNCTION_NODE*)malloc(sizeof(XGL_LAYER_DBG_FUNCTION_NODE));
#if ALLOC_DEBUG
    printf("Alloc34 #%lu pNewDbgFuncNode addr(%p)\n", ++g_alloc_count, (void*)pNewDbgFuncNode);
#endif
    if (!pNewDbgFuncNode)
        return XGL_ERROR_OUT_OF_MEMORY;
    pNewDbgFuncNode->pfnMsgCallback = pfnMsgCallback;
    pNewDbgFuncNode->pUserData = pUserData;
    pNewDbgFuncNode->pNext = g_pDbgFunctionHead;
    g_pDbgFunctionHead = pNewDbgFuncNode;
    // force callbacks if DebugAction hasn't been set already other than initial value
	if (g_actionIsDefault) {
		g_debugAction = XGL_DBG_LAYER_ACTION_CALLBACK;
	}
    XGL_RESULT result = nextTable.DbgRegisterMsgCallback(pfnMsgCallback, pUserData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgUnregisterMsgCallback(XGL_DBG_MSG_CALLBACK_FUNCTION pfnMsgCallback)
{
    XGL_LAYER_DBG_FUNCTION_NODE *pTrav = g_pDbgFunctionHead;
    XGL_LAYER_DBG_FUNCTION_NODE *pPrev = pTrav;
    while (pTrav) {
        if (pTrav->pfnMsgCallback == pfnMsgCallback) {
            pPrev->pNext = pTrav->pNext;
            if (g_pDbgFunctionHead == pTrav)
                g_pDbgFunctionHead = pTrav->pNext;
#if ALLOC_DEBUG
    printf("Free34 #%lu pNewDbgFuncNode addr(%p)\n", ++g_alloc_count, (void*)pTrav);
#endif
            free(pTrav);
            break;
        }
        pPrev = pTrav;
        pTrav = pTrav->pNext;
    }
    if (g_pDbgFunctionHead == NULL)
    {
        if (g_actionIsDefault)
            g_debugAction = XGL_DBG_LAYER_ACTION_LOG_MSG;
        else
            g_debugAction = (XGL_LAYER_DBG_ACTION)(g_debugAction & ~((uint32_t)XGL_DBG_LAYER_ACTION_CALLBACK));
    }
    XGL_RESULT result = nextTable.DbgUnregisterMsgCallback(pfnMsgCallback);
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDbgMarkerBegin(XGL_CMD_BUFFER cmdBuffer, const char* pMarker)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DBGMARKERBEGIN);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDbgMarkerBegin(cmdBuffer, pMarker);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDbgMarkerEnd(XGL_CMD_BUFFER cmdBuffer)
{
    GLOBAL_CB_NODE* pCB = getCBNode(cmdBuffer);
    if (pCB) {
        updateCBTracking(cmdBuffer);
        addCmd(pCB, CMD_DBGMARKEREND);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to use CmdBuffer %p that doesn't exist!", (void*)cmdBuffer);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_INVALID_CMD_BUFFER, "DS", str);
    }
    nextTable.CmdDbgMarkerEnd(cmdBuffer);
}

// TODO : Want to pass in a cmdBuffer here based on which state to display
void drawStateDumpDotFile(char* outFileName)
{
    // TODO : Currently just setting cmdBuffer based on global var
    //dumpDotFile(g_lastDrawStateCmdBuffer, outFileName);
    dumpGlobalDotFile(outFileName);
}

void drawStateDumpCommandBufferDotFile(char* outFileName)
{
    cbDumpDotFile(outFileName);
}

void drawStateDumpPngFile(char* outFileName)
{
#if defined(_WIN32)
// FIXME: NEED WINDOWS EQUIVALENT
        char str[1024];
        sprintf(str, "Cannot execute dot program yet on Windows.");
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_MISSING_DOT_PROGRAM, "DS", str);
#else // WIN32
    char dotExe[32] = "/usr/bin/dot";
    if( access(dotExe, X_OK) != -1) {
        dumpDotFile(g_lastCmdBuffer[getTIDIndex()], "/tmp/tmp.dot");
        char dotCmd[1024];
        sprintf(dotCmd, "%s /tmp/tmp.dot -Tpng -o %s", dotExe, outFileName);
        system(dotCmd);
        remove("/tmp/tmp.dot");
    }
    else {
        char str[1024];
        sprintf(str, "Cannot execute dot program at (%s) to dump requested %s file.", dotExe, outFileName);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_MISSING_DOT_PROGRAM, "DS", str);
    }
#endif // WIN32
}

XGL_LAYER_EXPORT void* XGLAPI xglGetProcAddr(XGL_PHYSICAL_GPU gpu, const char* funcName)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;

    if (gpu == NULL)
        return NULL;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);

    if (!strcmp(funcName, "xglGetProcAddr"))
        return (void *) xglGetProcAddr;
    if (!strcmp(funcName, "xglCreateDevice"))
        return (void*) xglCreateDevice;
    if (!strcmp(funcName, "xglDestroyDevice"))
        return (void*) xglDestroyDevice;
    if (!strcmp(funcName, "xglEnumerateLayers"))
        return (void*) xglEnumerateLayers;
    if (!strcmp(funcName, "xglQueueSubmit"))
        return (void*) xglQueueSubmit;
    if (!strcmp(funcName, "xglDestroyObject"))
        return (void*) xglDestroyObject;
    if (!strcmp(funcName, "xglCreateBufferView"))
        return (void*) xglCreateBufferView;
    if (!strcmp(funcName, "xglCreateImageView"))
        return (void*) xglCreateImageView;
    if (!strcmp(funcName, "xglCreateGraphicsPipeline"))
        return (void*) xglCreateGraphicsPipeline;
    if (!strcmp(funcName, "xglCreateSampler"))
        return (void*) xglCreateSampler;
    if (!strcmp(funcName, "xglCreateDescriptorSetLayout"))
        return (void*) xglCreateDescriptorSetLayout;
    if (!strcmp(funcName, "xglBeginDescriptorRegionUpdate"))
        return (void*) xglBeginDescriptorRegionUpdate;
    if (!strcmp(funcName, "xglEndDescriptorRegionUpdate"))
        return (void*) xglEndDescriptorRegionUpdate;
    if (!strcmp(funcName, "xglCreateDescriptorRegion"))
        return (void*) xglCreateDescriptorRegion;
    if (!strcmp(funcName, "xglClearDescriptorRegion"))
        return (void*) xglClearDescriptorRegion;
    if (!strcmp(funcName, "xglAllocDescriptorSets"))
        return (void*) xglAllocDescriptorSets;
    if (!strcmp(funcName, "xglClearDescriptorSets"))
        return (void*) xglClearDescriptorSets;
    if (!strcmp(funcName, "xglUpdateDescriptors"))
        return (void*) xglUpdateDescriptors;
    if (!strcmp(funcName, "xglCreateDynamicViewportState"))
        return (void*) xglCreateDynamicViewportState;
    if (!strcmp(funcName, "xglCreateDynamicRasterState"))
        return (void*) xglCreateDynamicRasterState;
    if (!strcmp(funcName, "xglCreateDynamicColorBlendState"))
        return (void*) xglCreateDynamicColorBlendState;
    if (!strcmp(funcName, "xglCreateDynamicDepthStencilState"))
        return (void*) xglCreateDynamicDepthStencilState;
    if (!strcmp(funcName, "xglCreateCommandBuffer"))
        return (void*) xglCreateCommandBuffer;
    if (!strcmp(funcName, "xglBeginCommandBuffer"))
        return (void*) xglBeginCommandBuffer;
    if (!strcmp(funcName, "xglEndCommandBuffer"))
        return (void*) xglEndCommandBuffer;
    if (!strcmp(funcName, "xglResetCommandBuffer"))
        return (void*) xglResetCommandBuffer;
    if (!strcmp(funcName, "xglCmdBindPipeline"))
        return (void*) xglCmdBindPipeline;
    if (!strcmp(funcName, "xglCmdBindPipelineDelta"))
        return (void*) xglCmdBindPipelineDelta;
    if (!strcmp(funcName, "xglCmdBindDynamicStateObject"))
        return (void*) xglCmdBindDynamicStateObject;
    if (!strcmp(funcName, "xglCmdBindDescriptorSet"))
        return (void*) xglCmdBindDescriptorSet;
    if (!strcmp(funcName, "xglCmdBindVertexBuffer"))
        return (void*) xglCmdBindVertexBuffer;
    if (!strcmp(funcName, "xglCmdBindIndexBuffer"))
        return (void*) xglCmdBindIndexBuffer;
    if (!strcmp(funcName, "xglCmdDraw"))
        return (void*) xglCmdDraw;
    if (!strcmp(funcName, "xglCmdDrawIndexed"))
        return (void*) xglCmdDrawIndexed;
    if (!strcmp(funcName, "xglCmdDrawIndirect"))
        return (void*) xglCmdDrawIndirect;
    if (!strcmp(funcName, "xglCmdDrawIndexedIndirect"))
        return (void*) xglCmdDrawIndexedIndirect;
    if (!strcmp(funcName, "xglCmdDispatch"))
        return (void*) xglCmdDispatch;
    if (!strcmp(funcName, "xglCmdDispatchIndirect"))
        return (void*) xglCmdDispatchIndirect;
    if (!strcmp(funcName, "xglCmdCopyBuffer"))
        return (void*) xglCmdCopyBuffer;
    if (!strcmp(funcName, "xglCmdCopyImage"))
        return (void*) xglCmdCopyImage;
    if (!strcmp(funcName, "xglCmdCopyBufferToImage"))
        return (void*) xglCmdCopyBufferToImage;
    if (!strcmp(funcName, "xglCmdCopyImageToBuffer"))
        return (void*) xglCmdCopyImageToBuffer;
    if (!strcmp(funcName, "xglCmdCloneImageData"))
        return (void*) xglCmdCloneImageData;
    if (!strcmp(funcName, "xglCmdUpdateBuffer"))
        return (void*) xglCmdUpdateBuffer;
    if (!strcmp(funcName, "xglCmdFillBuffer"))
        return (void*) xglCmdFillBuffer;
    if (!strcmp(funcName, "xglCmdClearColorImage"))
        return (void*) xglCmdClearColorImage;
    if (!strcmp(funcName, "xglCmdClearColorImageRaw"))
        return (void*) xglCmdClearColorImageRaw;
    if (!strcmp(funcName, "xglCmdClearDepthStencil"))
        return (void*) xglCmdClearDepthStencil;
    if (!strcmp(funcName, "xglCmdResolveImage"))
        return (void*) xglCmdResolveImage;
    if (!strcmp(funcName, "xglCmdSetEvent"))
        return (void*) xglCmdSetEvent;
    if (!strcmp(funcName, "xglCmdResetEvent"))
        return (void*) xglCmdResetEvent;
    if (!strcmp(funcName, "xglCmdWaitEvents"))
        return (void*) xglCmdWaitEvents;
    if (!strcmp(funcName, "xglCmdPipelineBarrier"))
        return (void*) xglCmdPipelineBarrier;
    if (!strcmp(funcName, "xglCmdBeginQuery"))
        return (void*) xglCmdBeginQuery;
    if (!strcmp(funcName, "xglCmdEndQuery"))
        return (void*) xglCmdEndQuery;
    if (!strcmp(funcName, "xglCmdResetQueryPool"))
        return (void*) xglCmdResetQueryPool;
    if (!strcmp(funcName, "xglCmdWriteTimestamp"))
        return (void*) xglCmdWriteTimestamp;
    if (!strcmp(funcName, "xglCmdInitAtomicCounters"))
        return (void*) xglCmdInitAtomicCounters;
    if (!strcmp(funcName, "xglCmdLoadAtomicCounters"))
        return (void*) xglCmdLoadAtomicCounters;
    if (!strcmp(funcName, "xglCmdSaveAtomicCounters"))
        return (void*) xglCmdSaveAtomicCounters;
    if (!strcmp(funcName, "xglCmdBeginRenderPass"))
        return (void*) xglCmdBeginRenderPass;
    if (!strcmp(funcName, "xglCmdEndRenderPass"))
        return (void*) xglCmdEndRenderPass;
    if (!strcmp(funcName, "xglDbgRegisterMsgCallback"))
        return (void*) xglDbgRegisterMsgCallback;
    if (!strcmp(funcName, "xglDbgUnregisterMsgCallback"))
        return (void*) xglDbgUnregisterMsgCallback;
    if (!strcmp(funcName, "xglCmdDbgMarkerBegin"))
        return (void*) xglCmdDbgMarkerBegin;
    if (!strcmp(funcName, "xglCmdDbgMarkerEnd"))
        return (void*) xglCmdDbgMarkerEnd;
    if (!strcmp("drawStateDumpDotFile", funcName))
        return (void*) drawStateDumpDotFile;
    if (!strcmp("drawStateDumpCommandBufferDotFile", funcName))
        return (void*) drawStateDumpCommandBufferDotFile;
    if (!strcmp("drawStateDumpPngFile", funcName))
        return (void*) drawStateDumpPngFile;
    else {
        if (gpuw->pGPA == NULL)
            return NULL;
        return gpuw->pGPA((XGL_PHYSICAL_GPU)gpuw->nextObject, funcName);
    }
}