Method ValidateContent

src/SparseBindingTest.cpp:245–431

}

void BaseImage::ValidateContent(RandomNumberGenerator& rand)
{
    /*
    dstBuf has following layout:
    For each of texels to be sampled, [0..valueCount):
    struct {
        in uint32_t pixelX;
        in uint32_t pixelY;
        out uint32_t pixelColor;
    }
    */

    const uint32_t valueCount = 128;

    VkBufferCreateInfo dstBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
    dstBufCreateInfo.usage = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
    dstBufCreateInfo.size = valueCount * sizeof(uint32_t) * 3;

    VmaAllocationCreateInfo dstBufAllocCreateInfo = {};
    dstBufAllocCreateInfo.flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT | VMA_ALLOCATION_CREATE_MAPPED_BIT;
    dstBufAllocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO;

    VkBuffer dstBuf = nullptr;
    VmaAllocation dstBufAlloc = nullptr;
    VmaAllocationInfo dstBufAllocInfo = {};
    TEST( vmaCreateBuffer(g_hAllocator, &dstBufCreateInfo, &dstBufAllocCreateInfo, &dstBuf, &dstBufAlloc, &dstBufAllocInfo) == VK_SUCCESS );

    // Fill dstBuf input data.
    {
        uint32_t* dstBufContent = (uint32_t*)dstBufAllocInfo.pMappedData;
        for(uint32_t i = 0; i < valueCount; ++i)
        {
            const uint32_t x = rand.Generate() % m_CreateInfo.extent.width;
            const uint32_t y = rand.Generate() % m_CreateInfo.extent.height;
            dstBufContent[i * 3    ] = x;
            dstBufContent[i * 3 + 1] = y;
            dstBufContent[i * 3 + 2] = 0;
        }
    }

    VkSamplerCreateInfo samplerCreateInfo = { VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO };
    samplerCreateInfo.magFilter = VK_FILTER_NEAREST;
    samplerCreateInfo.minFilter = VK_FILTER_NEAREST;
    samplerCreateInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
    samplerCreateInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
    samplerCreateInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
    samplerCreateInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
    samplerCreateInfo.unnormalizedCoordinates = VK_TRUE;

    VkSampler sampler = nullptr;
    TEST( vkCreateSampler( g_hDevice, &samplerCreateInfo, nullptr, &sampler) == VK_SUCCESS );

    VkDescriptorSetLayoutBinding bindings[2] = {};
    bindings[0].binding = 0;
    bindings[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
    bindings[0].descriptorCount = 1;
    bindings[0].stageFlags = VK_SHADER_STAGE_COMPUTE_BIT;
    bindings[0].pImmutableSamplers = &sampler;