tests/render_tests.cpp

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//  XGL tests
//
//  Copyright (C) 2014 LunarG, Inc.
//
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//  copy of this software and associated documentation files (the "Software"),
//  to deal in the Software without restriction, including without limitation
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//  in all copies or substantial portions of the Software.
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//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//  DEALINGS IN THE SOFTWARE.


// Basic rendering tests

#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <iostream>
#include <fstream>
using namespace std;

#include <xgl.h>
#include "gtest-1.7.0/include/gtest/gtest.h"

#include "xgldevice.h"
#include "icd-bil.h"

//--------------------------------------------------------------------------------------
// Mesh and VertexFormat Data
//--------------------------------------------------------------------------------------
struct Vertex
{
    XGL_FLOAT posX, posY, posZ, posW;    // Position data
    XGL_FLOAT r, g, b, a;                // Color
};

#define XYZ1(_x_, _y_, _z_)         (_x_), (_y_), (_z_), 1.f

static const Vertex g_vbData[] =
{
    { XYZ1( -1, -1, -1 ), XYZ1( 0.f, 0.f, 0.f ) },
    { XYZ1( 1, -1, -1 ), XYZ1( 1.f, 0.f, 0.f ) },
    { XYZ1( -1,  1, -1 ), XYZ1( 0.f, 1.f, 0.f ) },
    { XYZ1( -1,  1, -1 ), XYZ1( 0.f, 1.f, 0.f ) },
    { XYZ1( 1, -1, -1 ), XYZ1( 1.f, 0.f, 0.f ) },
    { XYZ1( 1,  1, -1 ), XYZ1( 1.f, 1.f, 0.f ) },

    { XYZ1( -1, -1,  1 ), XYZ1( 0.f, 0.f, 1.f ) },
    { XYZ1( -1,  1,  1 ), XYZ1( 0.f, 1.f, 1.f ) },
    { XYZ1( 1, -1,  1 ), XYZ1( 1.f, 0.f, 1.f ) },
    { XYZ1( 1, -1,  1 ), XYZ1( 1.f, 0.f, 1.f ) },
    { XYZ1( -1,  1,  1 ), XYZ1( 0.f, 1.f, 1.f ) },
    { XYZ1( 1,  1,  1 ), XYZ1( 1.f, 1.f, 1.f ) },

    { XYZ1( 1,  1,  1 ), XYZ1( 1.f, 1.f, 1.f ) },
    { XYZ1( 1,  1, -1 ), XYZ1( 1.f, 1.f, 0.f ) },
    { XYZ1( 1, -1,  1 ), XYZ1( 1.f, 0.f, 1.f ) },
    { XYZ1( 1, -1,  1 ), XYZ1( 1.f, 0.f, 1.f ) },
    { XYZ1( 1,  1, -1 ), XYZ1( 1.f, 1.f, 0.f ) },
    { XYZ1( 1, -1, -1 ), XYZ1( 1.f, 0.f, 0.f ) },

    { XYZ1( -1,  1,  1 ), XYZ1( 0.f, 1.f, 1.f ) },
    { XYZ1( -1, -1,  1 ), XYZ1( 0.f, 0.f, 1.f ) },
    { XYZ1( -1,  1, -1 ), XYZ1( 0.f, 1.f, 0.f ) },
    { XYZ1( -1,  1, -1 ), XYZ1( 0.f, 1.f, 0.f ) },
    { XYZ1( -1, -1,  1 ), XYZ1( 0.f, 0.f, 1.f ) },
    { XYZ1( -1, -1, -1 ), XYZ1( 0.f, 0.f, 0.f ) },

    { XYZ1( 1,  1,  1 ), XYZ1( 1.f, 1.f, 1.f ) },
    { XYZ1( -1,  1,  1 ), XYZ1( 0.f, 1.f, 1.f ) },
    { XYZ1( 1,  1, -1 ), XYZ1( 1.f, 1.f, 0.f ) },
    { XYZ1( 1,  1, -1 ), XYZ1( 1.f, 1.f, 0.f ) },
    { XYZ1( -1,  1,  1 ), XYZ1( 0.f, 1.f, 1.f ) },
    { XYZ1( -1,  1, -1 ), XYZ1( 0.f, 1.f, 0.f ) },

    { XYZ1( 1, -1,  1 ), XYZ1( 1.f, 0.f, 1.f ) },
    { XYZ1( 1, -1, -1 ), XYZ1( 1.f, 0.f, 0.f ) },
    { XYZ1( -1, -1,  1 ), XYZ1( 0.f, 0.f, 1.f ) },
    { XYZ1( -1, -1,  1 ), XYZ1( 0.f, 0.f, 1.f ) },
    { XYZ1( 1, -1, -1 ), XYZ1( 1.f, 0.f, 0.f ) },
    { XYZ1( -1, -1, -1 ), XYZ1( 0.f, 0.f, 0.f ) },
};


class XglRenderTest : public ::testing::Test {
public:
    void CreateImage(XGL_UINT w, XGL_UINT h, XGL_IMAGE *pImage,
                     XGL_GPU_MEMORY *pMem);
    void DestroyImage();

    void CreateImageView(XGL_IMAGE_VIEW_CREATE_INFO* pCreateInfo,
                         XGL_IMAGE_VIEW* pView);
    void DestroyImageView(XGL_IMAGE_VIEW imageView);
    XGL_DEVICE device() {return m_device->device();}
    void CreateShader(const char *filename, XGL_SHADER *pshader);
    void InitPipeline();
    void InitMesh( XGL_UINT32 numVertices, XGL_GPU_SIZE vbStride, const void* vertices );
    void DrawTriangleTest();
    void WritePPM( const char *filename, int width, int height );

protected:
    XGL_APPLICATION_INFO app_info;
    XGL_PHYSICAL_GPU objs[MAX_GPUS];
    XGL_UINT gpu_count;
    XGL_IMAGE           m_image;
    XGL_IMAGE_STATE     m_image_state;
    XGL_GPU_MEMORY      m_image_mem;
    XGL_GPU_MEMORY      m_descriptor_set_mem;
    XGL_GPU_MEMORY      m_pipe_mem;
    XglDevice *m_device;
    XGL_CMD_BUFFER m_cmdBuffer;
    XGL_UINT32 m_numVertices;
    XGL_MEMORY_VIEW_ATTACH_INFO m_vtxBufferView;
    XGL_GPU_MEMORY m_vtxBufferMem;
    XGL_UINT32                      m_numMemRefs;
    XGL_MEMORY_REF                  m_memRefs[5];
    XGL_RASTER_STATE_OBJECT         m_stateRaster;
    XGL_COLOR_BLEND_STATE_OBJECT    m_colorBlend;
    XGL_VIEWPORT_STATE_OBJECT       m_stateViewport;
    XGL_DEPTH_STENCIL_STATE_OBJECT  m_stateDepthStencil;
    XGL_MSAA_STATE_OBJECT           m_stateMsaa;
    XGL_DESCRIPTOR_SET              m_rsrcDescSet;

    virtual void SetUp() {
        XGL_RESULT err;

        this->app_info.sType = XGL_STRUCTURE_TYPE_APPLICATION_INFO;
        this->app_info.pNext = NULL;
        this->app_info.pAppName = (const XGL_CHAR *) "base";
        this->app_info.appVersion = 1;
        this->app_info.pEngineName = (const XGL_CHAR *) "unittest";
        this->app_info.engineVersion = 1;
        this->app_info.apiVersion = XGL_MAKE_VERSION(0, 22, 0);

        memset(&m_vtxBufferView, 0, sizeof(m_vtxBufferView));
        m_vtxBufferView.sType = XGL_STRUCTURE_TYPE_MEMORY_VIEW_ATTACH_INFO;

        err = xglInitAndEnumerateGpus(&app_info, NULL,
                                      MAX_GPUS, &this->gpu_count, objs);
        ASSERT_XGL_SUCCESS(err);
        ASSERT_GE(1, this->gpu_count) << "No GPU available";

        m_device = new XglDevice(0, objs[0]);
        m_device->get_device_queue();
    }

    virtual void TearDown() {
        xglInitAndEnumerateGpus(&this->app_info, XGL_NULL_HANDLE, 0, &gpu_count, XGL_NULL_HANDLE);
    }
};


void XglRenderTest::CreateImage(XGL_UINT w, XGL_UINT h, XGL_IMAGE *pImage,
                                XGL_GPU_MEMORY *pMem)
{
    XGL_RESULT err;
    XGL_UINT mipCount;
    XGL_SIZE size;
    XGL_FORMAT fmt;
    XGL_FORMAT_PROPERTIES image_fmt;

    mipCount = 0;

    XGL_UINT _w = w;
    XGL_UINT _h = h;
    while( ( _w > 0 ) || ( _h > 0 ) )
    {
        _w >>= 1;
        _h >>= 1;
        mipCount++;
    }

    fmt.channelFormat = XGL_CH_FMT_R8G8B8A8;
    fmt.numericFormat = XGL_NUM_FMT_UNORM;
    // TODO: Pick known good format rather than just expect common format
    /*
     * XXX: What should happen if given NULL HANDLE for the pData argument?
     * We're not requesting XGL_INFO_TYPE_MEMORY_REQUIREMENTS so there is
     * an expectation that pData is a valid pointer.
     * However, why include a returned size value? That implies that the
     * amount of data may vary and that doesn't work well for using a
     * fixed structure.
     */

    err = xglGetFormatInfo(this->m_device->device(), fmt,
                           XGL_INFO_TYPE_FORMAT_PROPERTIES,
                           &size, &image_fmt);
    ASSERT_XGL_SUCCESS(err);

    //    typedef struct _XGL_IMAGE_CREATE_INFO
    //    {
    //        XGL_STRUCTURE_TYPE                      sType;                      // Must be XGL_STRUCTURE_TYPE_IMAGE_CREATE_INFO
    //        const XGL_VOID*                         pNext;                      // Pointer to next structure.
    //        XGL_IMAGE_TYPE                          imageType;
    //        XGL_FORMAT                              format;
    //        XGL_EXTENT3D                            extent;
    //        XGL_UINT                                mipLevels;
    //        XGL_UINT                                arraySize;
    //        XGL_UINT                                samples;
    //        XGL_IMAGE_TILING                        tiling;
    //        XGL_FLAGS                               usage;                      // XGL_IMAGE_USAGE_FLAGS
    //        XGL_FLAGS                               flags;                      // XGL_IMAGE_CREATE_FLAGS
    //    } XGL_IMAGE_CREATE_INFO;


    XGL_IMAGE_CREATE_INFO imageCreateInfo = {};
    imageCreateInfo.sType = XGL_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
    imageCreateInfo.imageType = XGL_IMAGE_2D;
    imageCreateInfo.format = fmt;
    imageCreateInfo.arraySize = 1;
    imageCreateInfo.extent.width = w;
    imageCreateInfo.extent.height = h;
    imageCreateInfo.extent.depth = 1;
    imageCreateInfo.mipLevels = mipCount;
    imageCreateInfo.samples = 1;
    imageCreateInfo.tiling = XGL_LINEAR_TILING;

    // Image usage flags
    //    typedef enum _XGL_IMAGE_USAGE_FLAGS
    //    {
    //        XGL_IMAGE_USAGE_SHADER_ACCESS_READ_BIT                  = 0x00000001,
    //        XGL_IMAGE_USAGE_SHADER_ACCESS_WRITE_BIT                 = 0x00000002,
    //        XGL_IMAGE_USAGE_COLOR_ATTACHMENT_BIT                    = 0x00000004,
    //        XGL_IMAGE_USAGE_DEPTH_STENCIL_BIT                       = 0x00000008,
    //    } XGL_IMAGE_USAGE_FLAGS;
    imageCreateInfo.usage = XGL_IMAGE_USAGE_SHADER_ACCESS_WRITE_BIT | XGL_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;

    //    XGL_RESULT XGLAPI xglCreateImage(
    //        XGL_DEVICE                                  device,
    //        const XGL_IMAGE_CREATE_INFO*                pCreateInfo,
    //        XGL_IMAGE*                                  pImage);
    err = xglCreateImage(device(), &imageCreateInfo, pImage);
    ASSERT_XGL_SUCCESS(err);

    XGL_MEMORY_REQUIREMENTS mem_req;
    XGL_UINT data_size;
    err = xglGetObjectInfo(*pImage, XGL_INFO_TYPE_MEMORY_REQUIREMENTS,
                           &data_size, &mem_req);
    ASSERT_XGL_SUCCESS(err);
    ASSERT_EQ(data_size, sizeof(mem_req));
    ASSERT_NE(0, mem_req.size) << "xglGetObjectInfo (Event): Failed - expect images to require memory";

    m_image_state = XGL_IMAGE_STATE_UNINITIALIZED_TARGET;

    //        XGL_RESULT XGLAPI xglAllocMemory(
    //            XGL_DEVICE                                  device,
    //            const XGL_MEMORY_ALLOC_INFO*                pAllocInfo,
    //            XGL_GPU_MEMORY*                             pMem);
    XGL_MEMORY_ALLOC_INFO mem_info;

    memset(&mem_info, 0, sizeof(mem_info));
    mem_info.sType = XGL_STRUCTURE_TYPE_MEMORY_ALLOC_INFO;
    mem_info.allocationSize = mem_req.size;
    mem_info.alignment = mem_req.alignment;
    mem_info.heapCount = mem_req.heapCount;
    memcpy(mem_info.heaps, mem_req.heaps, sizeof(XGL_UINT)*XGL_MAX_MEMORY_HEAPS);
    mem_info.memPriority = XGL_MEMORY_PRIORITY_NORMAL;
    mem_info.flags = XGL_MEMORY_ALLOC_SHAREABLE_BIT;
    err = xglAllocMemory(device(), &mem_info, pMem);
    ASSERT_XGL_SUCCESS(err);

    err = xglBindObjectMemory(*pImage, *pMem, 0);
    ASSERT_XGL_SUCCESS(err);
}

void XglRenderTest::DestroyImage()
{
    // All done with image memory, clean up
    ASSERT_XGL_SUCCESS(xglBindObjectMemory(m_image, XGL_NULL_HANDLE, 0));

    ASSERT_XGL_SUCCESS(xglFreeMemory(m_image_mem));

    ASSERT_XGL_SUCCESS(xglDestroyObject(m_image));
}

void XglRenderTest::CreateImageView(XGL_IMAGE_VIEW_CREATE_INFO *pCreateInfo,
                                   XGL_IMAGE_VIEW *pView)
{
    pCreateInfo->image = this->m_image;
    ASSERT_XGL_SUCCESS(xglCreateImageView(device(), pCreateInfo, pView));
}

void XglRenderTest::DestroyImageView(XGL_IMAGE_VIEW imageView)
{
    ASSERT_XGL_SUCCESS(xglDestroyObject(imageView));
}

void XglRenderTest::CreateShader(const char *filename, XGL_SHADER *pshader)
{
    struct icd_bil_header *pBIL;
    streampos size;
    char * memblock;
    XGL_RESULT err;

    //    codeSize = sizeof(struct bil_header) + 100;
    //    code = malloc(codeSize);
    //    ASSERT_TRUE(NULL != code) << "malloc failed!";

    //    memset(code, 0, codeSize);

    //    // Indicate that this is BIL data.
    //    pBIL = (struct bil_header *) code;
    //    pBIL->bil_magic = BILMagicNumber;
    //    pBIL->bil_version = BILVersion;

    // reading an entire binary file
    ifstream file (filename, ios::in|ios::binary|ios::ate);
    ASSERT_TRUE(file.is_open()) << "Unable to open file: " << filename;

    size = file.tellg();
    memblock = new char [size];
    ASSERT_TRUE(memblock != NULL) << "memory allocation failed";

    file.seekg (0, ios::beg);
    file.read (memblock, size);
    file.close();

    pBIL = (struct icd_bil_header *) memblock;
    pBIL->magic = ICD_BIL_MAGIC;
    pBIL->version = ICD_BIL_VERSION;

    pBIL->gen_magic = filename[0];

    XGL_SHADER_CREATE_INFO createInfo;
    XGL_SHADER shader;

    createInfo.sType = XGL_STRUCTURE_TYPE_SHADER_CREATE_INFO;
    createInfo.pNext = NULL;
    createInfo.pCode = memblock;
    createInfo.codeSize = size;
    createInfo.flags = 0;
    err = xglCreateShader(device(), &createInfo, &shader);
    ASSERT_XGL_SUCCESS(err);

    delete[] memblock;

    *pshader = shader;
}

// this function will create the vertex buffer and fill it with the mesh data
void XglRenderTest::InitMesh( XGL_UINT32 numVertices, XGL_GPU_SIZE vbStride,
                              const void* vertices )
{
    XGL_RESULT err = XGL_SUCCESS;

    assert( numVertices * vbStride > 0 );
    m_numVertices = numVertices;

    XGL_MEMORY_ALLOC_INFO alloc_info = {};
    XGL_UINT8 *pData;

    alloc_info.sType = XGL_STRUCTURE_TYPE_MEMORY_ALLOC_INFO;
    alloc_info.allocationSize = numVertices * vbStride;
    alloc_info.alignment = 0;
    alloc_info.heapCount = 1;
    alloc_info.heaps[0] = 0; // TODO: Use known existing heap

    alloc_info.flags = XGL_MEMORY_HEAP_CPU_VISIBLE_BIT;
    alloc_info.memPriority = XGL_MEMORY_PRIORITY_NORMAL;

    err = xglAllocMemory(device(), &alloc_info, &m_vtxBufferMem);
    ASSERT_XGL_SUCCESS(err);

    err = xglMapMemory(m_vtxBufferMem, 0, (XGL_VOID **) &pData);
    ASSERT_XGL_SUCCESS(err);

    memcpy(pData, vertices, alloc_info.allocationSize);

    err = xglUnmapMemory(m_vtxBufferMem);
    ASSERT_XGL_SUCCESS(err);

    // set up the memory view for the vertex buffer
    this->m_vtxBufferView.stride = vbStride;
    this->m_vtxBufferView.range  = numVertices * vbStride;
    this->m_vtxBufferView.offset = 0;
    this->m_vtxBufferView.mem    = m_vtxBufferMem;
    this->m_vtxBufferView.format.channelFormat = XGL_CH_FMT_UNDEFINED;
    this->m_vtxBufferView.format.numericFormat = XGL_NUM_FMT_UNDEFINED;

    // open the command buffer
    err = xglBeginCommandBuffer( m_cmdBuffer, 0 );
    ASSERT_XGL_SUCCESS(err);

    XGL_MEMORY_STATE_TRANSITION transition = {};
    transition.mem = m_vtxBufferMem;
    transition.oldState = XGL_MEMORY_STATE_DATA_TRANSFER;
    transition.newState = XGL_MEMORY_STATE_GRAPHICS_SHADER_READ_ONLY;
    transition.offset = 0;
    transition.regionSize = numVertices * vbStride;

    // write transition to the command buffer
    xglCmdPrepareMemoryRegions( m_cmdBuffer, 1, &transition );
    this->m_vtxBufferView.state = XGL_MEMORY_STATE_GRAPHICS_SHADER_READ_ONLY;

    // finish recording the command buffer
    err = xglEndCommandBuffer( m_cmdBuffer );
    ASSERT_XGL_SUCCESS(err);

    // this command buffer only uses the vertex buffer memory
    m_numMemRefs = 1;
    m_memRefs[0].flags = 0;
    m_memRefs[0].mem = m_vtxBufferMem;

    // submit the command buffer to the universal queue
    err = xglQueueSubmit( m_device->m_queue, 1, &m_cmdBuffer, m_numMemRefs, m_memRefs, NULL );
    ASSERT_XGL_SUCCESS(err);
}

void XglRenderTest::DrawTriangleTest()
{
    XGL_RESULT err;
    XGL_GRAPHICS_PIPELINE_CREATE_INFO info = {};
    XGL_SHADER vs, ps;
    XGL_PIPELINE_SHADER_STAGE_CREATE_INFO vs_stage;
    XGL_PIPELINE_SHADER_STAGE_CREATE_INFO ps_stage;
    XGL_PIPELINE pipeline;
    int width = 256, height = 256;

    // create a raster state (solid, back-face culling)
    XGL_RASTER_STATE_CREATE_INFO raster = {};
    raster.sType = XGL_STRUCTURE_TYPE_RASTER_STATE_CREATE_INFO;
    raster.fillMode = XGL_FILL_SOLID;
    raster.cullMode = XGL_CULL_BACK;
    raster.frontFace = XGL_FRONT_FACE_CCW;
    err = xglCreateRasterState( device(), &raster, &m_stateRaster );
    ASSERT_XGL_SUCCESS(err);

    XGL_VIEWPORT_STATE_CREATE_INFO viewport = {};
    viewport.viewportCount         = 1;
    viewport.scissorEnable         = XGL_FALSE;
    viewport.viewports[0].originX  = 0;
    viewport.viewports[0].originY  = 0;
    viewport.viewports[0].width    = 1.f * width;
    viewport.viewports[0].height   = 1.f * height;
    viewport.viewports[0].minDepth = 0.f;
    viewport.viewports[0].maxDepth = 1.f;

    err = xglCreateViewportState( device(), &viewport, &m_stateViewport );
    ASSERT_XGL_SUCCESS( err );

    XGL_COLOR_BLEND_STATE_CREATE_INFO blend = {};
    blend.sType = XGL_STRUCTURE_TYPE_COLOR_BLEND_STATE_CREATE_INFO;
    err = xglCreateColorBlendState(device(), &blend, &m_colorBlend);
    ASSERT_XGL_SUCCESS( err );

    XGL_DEPTH_STENCIL_STATE_CREATE_INFO depthStencil = {};
    depthStencil.sType = XGL_STRUCTURE_TYPE_DEPTH_STENCIL_STATE_CREATE_INFO;
    depthStencil.depthTestEnable      = XGL_FALSE;
    depthStencil.depthWriteEnable = XGL_FALSE;
    depthStencil.depthFunc = XGL_COMPARE_LESS_EQUAL;
    depthStencil.depthBoundsEnable = XGL_FALSE;
    depthStencil.minDepth = 0.f;
    depthStencil.maxDepth = 1.f;
    depthStencil.back.stencilDepthFailOp = XGL_STENCIL_OP_KEEP;
    depthStencil.back.stencilFailOp = XGL_STENCIL_OP_KEEP;
    depthStencil.back.stencilPassOp = XGL_STENCIL_OP_KEEP;
    depthStencil.back.stencilRef = 0x00;
    depthStencil.back.stencilFunc = XGL_COMPARE_ALWAYS;
    depthStencil.front = depthStencil.back;

    err = xglCreateDepthStencilState( device(), &depthStencil, &m_stateDepthStencil );
    ASSERT_XGL_SUCCESS( err );

    XGL_MSAA_STATE_CREATE_INFO msaa = {};
    msaa.sType = XGL_STRUCTURE_TYPE_MSAA_STATE_CREATE_INFO;
    msaa.sampleMask = 1;
    msaa.samples = 1;

    err = xglCreateMsaaState( device(), &msaa, &m_stateMsaa );
    ASSERT_XGL_SUCCESS( err );

    XGL_CMD_BUFFER_CREATE_INFO cmdInfo = {};

    cmdInfo.sType = XGL_STRUCTURE_TYPE_CMD_BUFFER_CREATE_INFO;
    cmdInfo.queueType = XGL_QUEUE_TYPE_GRAPHICS;
    err = xglCreateCommandBuffer(device(), &cmdInfo, &m_cmdBuffer);
    ASSERT_XGL_SUCCESS(err) << "xglCreateCommandBuffer failed";

    ASSERT_NO_FATAL_FAILURE(CreateImage(width, height, &m_image, &m_image_mem));

#if 0
    // Create descriptor set for our one resource
    XGL_DESCRIPTOR_SET_CREATE_INFO descriptorInfo = {};
    descriptorInfo.sType = XGL_STRUCTURE_TYPE_DESCRIPTOR_SET_CREATE_INFO;
    descriptorInfo.slots = 1; // Vertex buffer only

    // create a descriptor set with a single slot
    err = xglCreateDescriptorSet( device(), &descriptorInfo, &m_rsrcDescSet );
    ASSERT_XGL_SUCCESS(err) << "xglCreateDescriptorSet failed";

    // bind memory to the descriptor set
    err = m_device->AllocAndBindGpuMemory(m_rsrcDescSet, "DescriptorSet", &m_descriptor_set_mem);

    // set up the memory view for the vertex buffer
    this->m_vtxBufferView.stride = vbStride;
    this->m_vtxBufferView.range  = numVertices * vbStride;
    this->m_vtxBufferView.offset = 0;
    this->m_vtxBufferView.mem    = m_vtxBufferMem;
    this->m_vtxBufferView.format.channelFormat = XGL_CH_FMT_UNDEFINED;
    this->m_vtxBufferView.format.numericFormat = XGL_NUM_FMT_UNDEFINED;
    // write the vertex buffer view to the descriptor set
    xglBeginDescriptorSetUpdate( m_rsrcDescSet );
    xglAttachMemoryViewDescriptors( m_rsrcDescSet, 0, 1, &m_vtxBufferView );
    xglEndDescriptorSetUpdate( m_rsrcDescSet );
#endif

    ASSERT_NO_FATAL_FAILURE(CreateShader("vs-kernel.bin", &vs));

    vs_stage.sType = XGL_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
    vs_stage.pNext = XGL_NULL_HANDLE;
    vs_stage.shader.stage = XGL_SHADER_STAGE_VERTEX;
    vs_stage.shader.shader = vs;
    vs_stage.shader.descriptorSetMapping[0].descriptorCount = 0;
    vs_stage.shader.linkConstBufferCount = 0;
    vs_stage.shader.pLinkConstBufferInfo = XGL_NULL_HANDLE;
    vs_stage.shader.dynamicMemoryViewMapping.slotObjectType = XGL_SLOT_UNUSED;
    vs_stage.shader.dynamicMemoryViewMapping.shaderEntityIndex = 0;

    ASSERT_NO_FATAL_FAILURE(CreateShader("wm-kernel.bin", &ps));

    ps_stage.sType = XGL_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
    ps_stage.pNext = &vs_stage;
    ps_stage.shader.stage = XGL_SHADER_STAGE_FRAGMENT;
    ps_stage.shader.shader = ps;
    // TODO: Do we need a descriptor set mapping for fragment?
    ps_stage.shader.descriptorSetMapping[0].descriptorCount = 0;
    ps_stage.shader.linkConstBufferCount = 0;
    ps_stage.shader.pLinkConstBufferInfo = XGL_NULL_HANDLE;
    ps_stage.shader.dynamicMemoryViewMapping.slotObjectType = XGL_SLOT_UNUSED;
    ps_stage.shader.dynamicMemoryViewMapping.shaderEntityIndex = 0;

    XGL_PIPELINE_IA_STATE_CREATE_INFO ia_state = {
        XGL_STRUCTURE_TYPE_PIPELINE_IA_STATE_CREATE_INFO,  // sType
        &ps_stage,                                         // pNext
        XGL_TOPOLOGY_TRIANGLE_LIST,                        // XGL_PRIMITIVE_TOPOLOGY
        XGL_FALSE,                                         // disableVertexReuse
        XGL_PROVOKING_VERTEX_LAST,                         // XGL_PROVOKING_VERTEX_CONVENTION
        XGL_FALSE,                                         // primitiveRestartEnable
        0                                                  // primitiveRestartIndex
    };

    XGL_PIPELINE_RS_STATE_CREATE_INFO rs_state = {
        XGL_STRUCTURE_TYPE_PIPELINE_RS_STATE_CREATE_INFO,
        &ia_state,
        XGL_FALSE,                                          // depthClipEnable
        XGL_FALSE,                                          // rasterizerDiscardEnable
        1.0                                                 // pointSize
    };

    XGL_PIPELINE_CB_STATE cb_state = {
        XGL_STRUCTURE_TYPE_PIPELINE_CB_STATE_CREATE_INFO,
        &rs_state,
        XGL_FALSE,                                          // alphaToCoverageEnable
        XGL_FALSE,                                          // dualSourceBlendEnable
        XGL_LOGIC_OP_COPY,                                  // XGL_LOGIC_OP
        {                                                   // XGL_PIPELINE_CB_ATTACHMENT_STATE
            {
                XGL_FALSE,                                  // blendEnable
                {XGL_CH_FMT_R8G8B8A8, XGL_NUM_FMT_UNORM},   // XGL_FORMAT
                0xF                                         // channelWriteMask
            }
        }
    };

    // TODO: Should take depth buffer format from queried formats
    XGL_PIPELINE_DB_STATE_CREATE_INFO db_state = {
        XGL_STRUCTURE_TYPE_PIPELINE_DB_STATE_CREATE_INFO,
        &cb_state,
        {XGL_CH_FMT_R32, XGL_NUM_FMT_DS}                    // XGL_FORMAT
    };

    info.sType = XGL_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
    info.pNext = &db_state;
    info.flags = 0;
    err = xglCreateGraphicsPipeline(device(), &info, &pipeline);
    ASSERT_XGL_SUCCESS(err);

    err = m_device->AllocAndBindGpuMemory(pipeline, "Pipeline", &m_pipe_mem);
    ASSERT_XGL_SUCCESS(err);

    /*
     * Shaders are now part of the pipeline, don't need these anymore
     */
    ASSERT_XGL_SUCCESS(xglDestroyObject(ps));
    ASSERT_XGL_SUCCESS(xglDestroyObject(vs));

//    typedef struct _XGL_COLOR_ATTACHMENT_VIEW_CREATE_INFO
//    {
//        XGL_STRUCTURE_TYPE                      sType;                  // Must be XGL_STRUCTURE_TYPE_COLOR_ATTACHMENT_VIEW_CREATE_INFO
//        XGL_VOID*                               pNext;                  // Pointer to next structure
//        XGL_IMAGE                               image;
//        XGL_FORMAT                              format;
//        XGL_UINT                                mipLevel;
//        XGL_UINT                                baseArraySlice;
//        XGL_UINT                                arraySize;
//    } XGL_COLOR_ATTACHMENT_VIEW_CREATE_INFO;
    XGL_COLOR_ATTACHMENT_VIEW_CREATE_INFO createView = {
        XGL_STRUCTURE_TYPE_COLOR_ATTACHMENT_VIEW_CREATE_INFO,
        XGL_NULL_HANDLE,
        this->m_image,
        {XGL_CH_FMT_R8G8B8A8, XGL_NUM_FMT_UNORM},
        0,
        0,
        1
    };
    XGL_COLOR_ATTACHMENT_VIEW colorView;

    err = xglCreateColorAttachmentView(device(), &createView, &colorView);
    ASSERT_XGL_SUCCESS(err);

    // Build command buffer
    err = xglBeginCommandBuffer(m_cmdBuffer, 0);
    ASSERT_XGL_SUCCESS(err);

    // whatever we want to do, we do it to the whole buffer
    XGL_IMAGE_SUBRESOURCE_RANGE srRange = {};
    srRange.aspect = XGL_IMAGE_ASPECT_COLOR;
    srRange.baseMipLevel = 0;
    srRange.mipLevels = XGL_LAST_MIP_OR_SLICE;
    srRange.baseArraySlice = 0;
    srRange.arraySize = XGL_LAST_MIP_OR_SLICE;

    // prepare the whole back buffer for clear
    XGL_IMAGE_STATE_TRANSITION transitionToClear = {};
    transitionToClear.image = m_image;
    transitionToClear.oldState = m_image_state;
    transitionToClear.newState = XGL_IMAGE_STATE_CLEAR;
    transitionToClear.subresourceRange = srRange;
    xglCmdPrepareImages( m_cmdBuffer, 1, &transitionToClear );
    m_image_state = ( XGL_IMAGE_STATE ) transitionToClear.newState;

    // clear the back buffer to dark grey
    XGL_UINT clearColor[4] = {64, 64, 64, 0};
    xglCmdClearColorImageRaw( m_cmdBuffer, m_image, clearColor, 1, &srRange );

    // prepare back buffer for rendering
    XGL_IMAGE_STATE_TRANSITION transitionToRender = {};
    transitionToRender.image = m_image;
    transitionToRender.oldState = m_image_state;
    transitionToRender.newState = XGL_IMAGE_STATE_TARGET_RENDER_ACCESS_OPTIMAL;
    transitionToRender.subresourceRange = srRange;
    xglCmdPrepareImages( m_cmdBuffer, 1, &transitionToRender );
    m_image_state = ( XGL_IMAGE_STATE ) transitionToRender.newState;

    // bind render target
    XGL_COLOR_ATTACHMENT_BIND_INFO colorBind = {};
    colorBind.view  = colorView;
    colorBind.colorAttachmentState = XGL_IMAGE_STATE_TARGET_RENDER_ACCESS_OPTIMAL;
    xglCmdBindAttachments(m_cmdBuffer, 1, &colorBind, NULL );

    // set all states
    xglCmdBindStateObject( m_cmdBuffer, XGL_STATE_BIND_RASTER, m_stateRaster );
    xglCmdBindStateObject( m_cmdBuffer, XGL_STATE_BIND_VIEWPORT, m_stateViewport );
    xglCmdBindStateObject( m_cmdBuffer, XGL_STATE_BIND_COLOR_BLEND, m_colorBlend);
    xglCmdBindStateObject( m_cmdBuffer, XGL_STATE_BIND_DEPTH_STENCIL, m_stateDepthStencil );
    xglCmdBindStateObject( m_cmdBuffer, XGL_STATE_BIND_MSAA, m_stateMsaa );

    // bind pipeline, vertex buffer (descriptor set) and WVP (dynamic memory view)
    xglCmdBindPipeline( m_cmdBuffer, XGL_PIPELINE_BIND_POINT_GRAPHICS, pipeline );
//    xglCmdBindDescriptorSet(m_cmdBuffer, XGL_PIPELINE_BIND_POINT_GRAPHICS, 0, m_rsrcDescSet, 0 );
//    xglCmdBindDynamicMemoryView( m_cmdBuffer, XGL_PIPELINE_BIND_POINT_GRAPHICS,  &m_constantBufferView );

    // render the cube
    xglCmdDraw( m_cmdBuffer, 0, 3, 0, 1 );

    // prepare the back buffer for present
//    XGL_IMAGE_STATE_TRANSITION transitionToPresent = {};
//    transitionToPresent.image = m_image;
//    transitionToPresent.oldState = m_image_state;
//    transitionToPresent.newState = m_display.fullscreen ? XGL_WSI_WIN_PRESENT_SOURCE_FLIP : XGL_WSI_WIN_PRESENT_SOURCE_BLT;
//    transitionToPresent.subresourceRange = srRange;
//    xglCmdPrepareImages( m_cmdBuffer, 1, &transitionToPresent );
//    m_image_state = ( XGL_IMAGE_STATE ) transitionToPresent.newState;

    // finalize recording of the command buffer
    err = xglEndCommandBuffer( m_cmdBuffer );
    ASSERT_XGL_SUCCESS( err );

    // this command buffer only uses the vertex buffer memory
    m_numMemRefs = 0;
//    m_memRefs[0].flags = 0;
//    m_memRefs[0].mem = m_vtxBufferMemory;

    // submit the command buffer to the universal queue
    err = xglQueueSubmit( m_device->m_queue, 1, &m_cmdBuffer, m_numMemRefs, m_memRefs, NULL );
    ASSERT_XGL_SUCCESS( err );

    err = xglQueueWaitIdle( m_device->m_queue );
    ASSERT_XGL_SUCCESS( err );

    // Wait for work to finish before cleaning up.
    xglDeviceWaitIdle(m_device->device());

    WritePPM( "TriangleTest.ppm", width, height );

    ASSERT_XGL_SUCCESS(xglDestroyObject(pipeline));
    ASSERT_XGL_SUCCESS(xglDestroyObject(m_cmdBuffer));
    ASSERT_XGL_SUCCESS(xglDestroyObject(m_stateRaster));
    ASSERT_XGL_SUCCESS(xglDestroyObject(m_stateViewport));
    ASSERT_XGL_SUCCESS(xglDestroyObject(m_stateDepthStencil));
    ASSERT_XGL_SUCCESS(xglDestroyObject(m_stateMsaa));
    DestroyImage();
    // DestroyImageView();
}

void XglRenderTest::WritePPM( const char *filename, int width, int height )
{
    XGL_RESULT err;
    int x, y;

    const XGL_IMAGE_SUBRESOURCE sr = {
        XGL_IMAGE_ASPECT_COLOR, 0, 0
    };
    XGL_SUBRESOURCE_LAYOUT sr_layout;
    XGL_UINT data_size;

    err = xglGetImageSubresourceInfo( m_image, &sr, XGL_INFO_TYPE_SUBRESOURCE_LAYOUT, &data_size, &sr_layout);
    ASSERT_XGL_SUCCESS( err );
    ASSERT_EQ(data_size, sizeof(sr_layout));

    const char *ptr;

    err = xglMapMemory( m_image_mem, 0, (XGL_VOID **) &ptr );
    ASSERT_XGL_SUCCESS( err );

    ptr += sr_layout.offset;

    ofstream file (filename);
    ASSERT_TRUE(file.is_open()) << "Unable to open file: " << filename;

    file << "P6\n";
    file << width << "\n";
    file << height << "\n";
    file << 255 << "\n";

    for (y = 0; y < height; y++) {
        const char *row = ptr;

        for (x = 0; x < width; x++) {
            file.write(row, 3);
            row += 4;
        }

        ptr += sr_layout.rowPitch;
    }

    file.close();

    err = xglUnmapMemory( m_image_mem );
    ASSERT_XGL_SUCCESS( err );
}

TEST_F(XglRenderTest, TestDrawTriangle) {
    DrawTriangleTest();
}

int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}