loader/extensions.c

/*
 * Copyright (c) 2015-2016 The Khronos Group Inc.
 * Copyright (c) 2015-2016 Valve Corporation
 * Copyright (c) 2015-2016 LunarG, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Author: Mark Lobodzinski <mark@lunarg.com>
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vk_loader_platform.h"
#include "loader.h"
#include "extensions.h"
#include <vulkan/vk_icd.h>

 // Definitions for the VK_NV_external_memory_capabilities extension

static const VkExtensionProperties
    nv_external_memory_capabilities_extension_info = {
        .extensionName = VK_NV_EXTERNAL_MEMORY_CAPABILITIES_EXTENSION_NAME,
        .specVersion = VK_NV_EXTERNAL_MEMORY_CAPABILITIES_SPEC_VERSION,
};

LOADER_EXPORT VKAPI_ATTR VkResult VKAPI_CALL
vkGetPhysicalDeviceExternalImageFormatPropertiesNV(
    VkPhysicalDevice physicalDevice, VkFormat format, VkImageType type,
    VkImageTiling tiling, VkImageUsageFlags usage, VkImageCreateFlags flags,
    VkExternalMemoryHandleTypeFlagsNV externalHandleType,
    VkExternalImageFormatPropertiesNV *pExternalImageFormatProperties) {

    const VkLayerInstanceDispatchTable *disp;
    VkPhysicalDevice unwrapped_phys_dev =
        loader_unwrap_physical_device(physicalDevice);
    disp = loader_get_instance_dispatch(physicalDevice);

    return disp->GetPhysicalDeviceExternalImageFormatPropertiesNV(
        unwrapped_phys_dev, format, type, tiling, usage, flags,
        externalHandleType, pExternalImageFormatProperties);
}

VKAPI_ATTR VkResult VKAPI_CALL
terminator_GetPhysicalDeviceExternalImageFormatPropertiesNV(
    VkPhysicalDevice physicalDevice, VkFormat format, VkImageType type,
    VkImageTiling tiling, VkImageUsageFlags usage, VkImageCreateFlags flags,
    VkExternalMemoryHandleTypeFlagsNV externalHandleType,
    VkExternalImageFormatPropertiesNV *pExternalImageFormatProperties) {

    struct loader_physical_device *phys_dev =
        (struct loader_physical_device *)physicalDevice;
    struct loader_icd *icd = phys_dev->this_icd;

    assert(icd->GetPhysicalDeviceExternalImageFormatPropertiesNV &&
           "loader: null GetPhysicalDeviceExternalImageFormatPropertiesNV ICD "
           "pointer");

    if (!icd->GetPhysicalDeviceExternalImageFormatPropertiesNV)
        return VK_ERROR_INITIALIZATION_FAILED;

    return icd->GetPhysicalDeviceExternalImageFormatPropertiesNV(
        phys_dev->phys_dev, format, type, tiling, usage, flags,
        externalHandleType, pExternalImageFormatProperties);
}

bool extension_instance_gpa(struct loader_instance *ptr_instance,
                            const char *name, void **addr) {
    *addr = NULL;

    // Functions for the VK_NV_external_memory_capabilities extension
    if (!strcmp("vkGetPhysicalDeviceExternalImageFormatPropertiesNV", name)) {
        *addr = (void *)vkGetPhysicalDeviceExternalImageFormatPropertiesNV;
        return true;
    }

    return false;
}

void extensions_create_instance(struct loader_instance *ptr_instance,
                                const VkInstanceCreateInfo *pCreateInfo) {

    for (uint32_t i = 0; i < pCreateInfo->enabledExtensionCount; i++) {
        if (strcmp(pCreateInfo->ppEnabledExtensionNames[i],
                   VK_NV_EXTERNAL_MEMORY_CAPABILITIES_EXTENSION_NAME) == 0) {
            // Nothing to do;
            return;
        }
    }
}