TEST_F() [71/72]

SpicesTest::TEST_F	(	VulkanImage_test	,
		TransferDataWithVkBuffer	)

Testing VulkanImage TransferDataWithVkBuffer.

Init with ArrayData.

Instance a staginBuffer for transfer data from array to image.

Copy the data from array to staginBuffer.

Transform Image Layout from origin to Transfer_dst.

Copy the data from staginBuffer to Image.

Iter all texel and test is get the data correct.

Copy the data from Image to array.

Definition at line 84 of file VulkanImage_test.h.

                                                       {
 
        std::array<float, m_TextureSize* m_TextureSize * 4> dataArray;
        for (int i = 0; i < m_TextureSize * m_TextureSize * 4; i++)
        {
            dataArray[i] = i + 0.0f;
        }
 
        Spices::VulkanBuffer stagingBuffer(
            m_RenderBackend->GetState(),
            "StagingBuffer",
            sizeof(dataArray),
            VK_BUFFER_USAGE_TRANSFER_SRC_BIT, 
            VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | 
            VK_MEMORY_PROPERTY_HOST_COHERENT_BIT
        );
 
        stagingBuffer.WriteToBuffer(dataArray.data());
 
        m_VulkanImage->TransitionImageLayout(VK_FORMAT_R32G32B32A32_SFLOAT, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
 
        m_VulkanImage->CopyBufferToImage(stagingBuffer.Get(), m_VulkanImage->GetImage(), static_cast<uint32_t>(m_TextureSize), static_cast<uint32_t>(m_TextureSize));
 
        for (int i = 0; i < m_TextureSize; i++)
        {
            for (int j = 0; j < m_TextureSize; j++)
            {
                std::array<float, 4> outDta;
                m_VulkanImage->CopyImageTexelToBuffer(i, j, reinterpret_cast<void*>(outDta.data()));
 
                EXPECT_EQ(outDta[0], 4.0f * m_TextureSize * j + 4.0f * i + 0.0f);
                EXPECT_EQ(outDta[1], 4.0f * m_TextureSize * j + 4.0f * i + 1.0f);
                EXPECT_EQ(outDta[2], 4.0f * m_TextureSize * j + 4.0f * i + 2.0f);
                EXPECT_EQ(outDta[3], 4.0f * m_TextureSize * j + 4.0f * i + 3.0f);
            }
        }
    }