Add dumper for DDS and texture converter for reordering colors

premake5.lua

@@ -163,11 +163,13 @@ group ""
 -- ========================
 -- Tests
 -- ========================
+include "test/ObjCommonTests.lua"
 include "test/ZoneCodeGeneratorTests.lua"
 include "test/ZoneCommonTests.lua"
 
 -- Tests group: Unit test and other tests projects
 group "Tests"
+    ObjCommonTests:project()
     ZoneCodeGeneratorTests:project()
     ZoneCommonTests:project()
 group ""

src/ObjCommon/Image/DdsTypes.h

@@ -1,16 +1,13 @@
 #pragma once
 
 #include <cstdint>
-#include <dxgiformat.h>
 
-namespace dds
+constexpr uint32_t MakeFourCc(const char ch0, const char ch1, const char ch2, const char ch3)
 {
-    constexpr uint32_t MakeFourCc(const char c0, const char c1, const char c2, const char c3)
+    return static_cast<uint32_t>(ch0)
-    {
+        | static_cast<uint32_t>(ch1) << 8
-        return static_cast<uint32_t>(c0)
+        | static_cast<uint32_t>(ch2) << 16
-            | static_cast<uint32_t>(c1) << 8
+        | static_cast<uint32_t>(ch3) << 24;
-            | static_cast<uint32_t>(c2) << 16
-            | static_cast<uint32_t>(c3) << 24;
 }
 
 enum DDP_FLAGS
@@ -23,18 +20,6 @@ namespace dds
     DDPF_LUMINANCE = 0x20000
 };
 
-    struct DDS_PIXELFORMAT
-    {
-        uint32_t dwSize;
-        uint32_t dwFlags;
-        uint32_t dwFourCC;
-        uint32_t dwRGBBitCount;
-        uint32_t dwRBitMask;
-        uint32_t dwGBitMask;
-        uint32_t dwBBitMask;
-        uint32_t dwABitMask;
-    };
-
 enum DDS_HEADER_FLAGS
 {
     DDSD_CAPS = 0x1,
@@ -66,6 +51,18 @@ namespace dds
     DDSCAPS2_VOLUME = 0x200000,
 };
 
+struct DDS_PIXELFORMAT
+{
+    uint32_t dwSize;
+    uint32_t dwFlags;
+    uint32_t dwFourCC;
+    uint32_t dwRGBBitCount;
+    uint32_t dwRBitMask;
+    uint32_t dwGBitMask;
+    uint32_t dwBBitMask;
+    uint32_t dwABitMask;
+};
+
 struct DDS_HEADER
 {
     uint32_t dwSize;
@@ -84,24 +81,34 @@ namespace dds
     uint32_t dwReserved2;
 };
 
-    enum DDS_DIMENSION
+enum D3D10_RESOURCE_DIMENSION
 {
-        DDS_DIMENSION_TEXTURE1D = 0x2,
+    D3D10_RESOURCE_DIMENSION_UNKNOWN,
-        DDS_DIMENSION_TEXTURE2D,
+    D3D10_RESOURCE_DIMENSION_BUFFER,
-        DDS_DIMENSION_TEXTURE3D
+    D3D10_RESOURCE_DIMENSION_TEXTURE1D,
+    D3D10_RESOURCE_DIMENSION_TEXTURE2D,
+    D3D10_RESOURCE_DIMENSION_TEXTURE3D
 };
 
-    enum DDS_RESOURCE_MISC
+enum DDS_HEADER_DXT10_MISC
 {
     DDS_RESOURCE_MISC_TEXTURECUBE = 0x4
 };
 
+enum DDS_HEADER_DXT10_MISC2
+{
+    DDS_ALPHA_MODE_UNKNOWN = 0x0,
+    DDS_ALPHA_MODE_STRAIGHT = 0x1,
+    DDS_ALPHA_MODE_PREMULTIPLIED = 0x2,
+    DDS_ALPHA_MODE_OPAQUE = 0x3,
+    DDS_ALPHA_MODE_CUSTOM = 0x4,
+};
+
 struct DDS_HEADER_DXT10
 {
     DXGI_FORMAT dxgiFormat;
-        DDS_DIMENSION resourceDimension;
+    D3D10_RESOURCE_DIMENSION resourceDimension;
     uint32_t miscFlag;
     uint32_t arraySize;
     uint32_t miscFlags2;
 };
-}

src/ObjCommon/Image/ImageFormat.cpp

@@ -1,6 +1,5 @@
 #include "ImageFormat.h"
 
-
 ImageFormat::ImageFormat(const ImageFormatId id, const DXGI_FORMAT dxgiFormat)
 {
     m_id = id;
@@ -21,25 +20,17 @@ ImageFormatUnsigned::ImageFormatUnsigned(const ImageFormatId id, const DXGI_FORM
                                          const unsigned bitsPerPixel, const unsigned rOffset, const unsigned rSize,
                                          const unsigned gOffset, const unsigned gSize, const unsigned bOffset,
                                          const unsigned bSize, const unsigned aOffset, const unsigned aSize)
-    : ImageFormat(id, dxgiFormat)
+    : ImageFormat(id, dxgiFormat),
+      m_bits_per_pixel(bitsPerPixel),
+      m_r_offset(rOffset),
+      m_r_size(rSize),
+      m_g_offset(gOffset),
+      m_g_size(gSize),
+      m_b_offset(bOffset),
+      m_b_size(bSize),
+      m_a_offset(aOffset),
+      m_a_size(aSize)
 {
-    m_bits_per_pixel = bitsPerPixel;
-
-    m_r_offset = rOffset;
-    m_r_size = rSize;
-    m_r_mask = (UINT64_MAX << rOffset) & ~(UINT64_MAX << (rOffset + rSize));
-
-    m_g_offset = gOffset;
-    m_g_size = gSize;
-    m_g_mask = (UINT64_MAX << gOffset) & ~(UINT64_MAX << (gOffset + gSize));
-
-    m_b_offset = bOffset;
-    m_b_size = bSize;
-    m_b_mask = (UINT64_MAX << bOffset) & ~(UINT64_MAX << (bOffset + bSize));
-
-    m_a_offset = aOffset;
-    m_a_size = aSize;
-    m_a_mask = (UINT64_MAX << aOffset) & ~(UINT64_MAX << (aOffset + aSize));
 }
 
 ImageFormatType ImageFormatUnsigned::GetType() const
@@ -47,6 +38,15 @@ ImageFormatType ImageFormatUnsigned::GetType() const
     return ImageFormatType::UNSIGNED;
 }
 
+size_t ImageFormatUnsigned::GetPitch(const unsigned mipLevel, const unsigned width) const
+{
+    unsigned mipWidth = width >> mipLevel;
+    if (mipWidth == 0)
+        mipWidth = 1;
+
+    return mipWidth * m_bits_per_pixel / 8;
+}
+
 size_t ImageFormatUnsigned::GetSizeOfMipLevel(const unsigned mipLevel, const unsigned width, const unsigned height,
                                               const unsigned depth) const
 {
@@ -64,17 +64,12 @@ size_t ImageFormatUnsigned::GetSizeOfMipLevel(const unsigned mipLevel, const uns
     return mipWidth * mipHeight * mipDepth * m_bits_per_pixel / 8;
 }
 
-size_t ImageFormatUnsigned::GetPitch(const unsigned width) const
-{
-    return (width * m_bits_per_pixel + 7) / 8;
-}
-
 ImageFormatBlockCompressed::ImageFormatBlockCompressed(const ImageFormatId id, const DXGI_FORMAT dxgiFormat,
                                                        const unsigned blockSize, const unsigned bitsPerBlock)
-    : ImageFormat(id, dxgiFormat)
+    : ImageFormat(id, dxgiFormat),
+      m_block_size(blockSize),
+      m_bits_per_block(bitsPerBlock)
 {
-    m_block_size = blockSize;
-    m_bits_per_block = bitsPerBlock;
 }
 
 ImageFormatType ImageFormatBlockCompressed::GetType() const
@@ -82,6 +77,18 @@ ImageFormatType ImageFormatBlockCompressed::GetType() const
     return ImageFormatType::BLOCK_COMPRESSED;
 }
 
+size_t ImageFormatBlockCompressed::GetPitch(const unsigned mipLevel, const unsigned width) const
+{
+    unsigned mipWidth = width >> mipLevel;
+
+    if (mipWidth == 0)
+        mipWidth = 1;
+
+    const unsigned blockCount = (mipWidth + m_block_size - 1) / m_block_size;
+
+    return blockCount * m_bits_per_block / 8;
+}
+
 size_t ImageFormatBlockCompressed::GetSizeOfMipLevel(const unsigned mipLevel, const unsigned width,
                                                      const unsigned height, const unsigned depth) const
 {
@@ -103,15 +110,34 @@ size_t ImageFormatBlockCompressed::GetSizeOfMipLevel(const unsigned mipLevel, co
     return blockCount * m_bits_per_block / 8;
 }
 
-size_t ImageFormatBlockCompressed::GetPitch(const unsigned width) const
+bool ImageFormatUnsigned::HasR() const
 {
-    return (width + m_block_size - 1) / m_block_size * (m_bits_per_block / 8);
+    return m_r_size > 0;
+}
+
+bool ImageFormatUnsigned::HasG() const
+{
+    return m_g_size > 0;
+}
+
+bool ImageFormatUnsigned::HasB() const
+{
+    return m_b_size > 0;
+}
+
+bool ImageFormatUnsigned::HasA() const
+{
+    return m_a_size > 0;
 }
 
 const ImageFormatUnsigned ImageFormat::FORMAT_R8_G8_B8(ImageFormatId::R8_G8_B8, DXGI_FORMAT_UNKNOWN,
                                                        24, 0, 8, 8, 8, 16, 8, 0, 0);
+const ImageFormatUnsigned ImageFormat::FORMAT_B8_G8_R8_X8(ImageFormatId::B8_G8_R8_X8, DXGI_FORMAT_B8G8R8X8_UNORM,
+                                                          32, 16, 8, 8, 8, 0, 8, 0, 0);
 const ImageFormatUnsigned ImageFormat::FORMAT_R8_G8_B8_A8(ImageFormatId::R8_G8_B8_A8, DXGI_FORMAT_R8G8B8A8_UNORM,
                                                           32, 0, 8, 8, 8, 16, 8, 24, 8);
+const ImageFormatUnsigned ImageFormat::FORMAT_B8_G8_R8_A8(ImageFormatId::B8_G8_R8_A8, DXGI_FORMAT_B8G8R8A8_UNORM,
+                                                          32, 16, 8, 8, 8, 0, 8, 24, 8);
 const ImageFormatUnsigned ImageFormat::FORMAT_A8(ImageFormatId::A8, DXGI_FORMAT_A8_UNORM,
                                                  8, 0, 0, 0, 0, 0, 0, 0, 8);
 const ImageFormatUnsigned ImageFormat::FORMAT_R16_G16_B16_A16_FLOAT(ImageFormatId::R16_G16_B16_A16_FLOAT,
@@ -122,3 +148,18 @@ const ImageFormatBlockCompressed ImageFormat::FORMAT_BC2(ImageFormatId::BC2, DXG
 const ImageFormatBlockCompressed ImageFormat::FORMAT_BC3(ImageFormatId::BC3, DXGI_FORMAT_BC3_UNORM, 4, 128);
 const ImageFormatBlockCompressed ImageFormat::FORMAT_BC4(ImageFormatId::BC4, DXGI_FORMAT_BC4_UNORM, 4, 64);
 const ImageFormatBlockCompressed ImageFormat::FORMAT_BC5(ImageFormatId::BC5, DXGI_FORMAT_BC5_UNORM, 4, 128);
+
+const ImageFormat* const ImageFormat::ALL_FORMATS[static_cast<unsigned>(ImageFormatId::MAX)]
+{
+    &FORMAT_R8_G8_B8,
+    &FORMAT_B8_G8_R8_X8,
+    &FORMAT_R8_G8_B8_A8,
+    &FORMAT_B8_G8_R8_A8,
+    &FORMAT_A8,
+    &FORMAT_R16_G16_B16_A16_FLOAT,
+    &FORMAT_BC1,
+    &FORMAT_BC2,
+    &FORMAT_BC3,
+    &FORMAT_BC4,
+    &FORMAT_BC5,
+};

src/ObjCommon/Image/ImageFormat.h

@@ -5,16 +5,20 @@
 
 enum class ImageFormatId
 {
-    UNKNOWN,
+    UNKNOWN = -1,
     R8_G8_B8,
+    B8_G8_R8_X8,
     R8_G8_B8_A8,
+    B8_G8_R8_A8,
     A8,
     R16_G16_B16_A16_FLOAT,
     BC1,
     BC2,
     BC3,
     BC4,
-    BC5
+    BC5,
+
+    MAX
 };
 
 enum class ImageFormatType
@@ -42,11 +46,13 @@ public:
     DXGI_FORMAT GetDxgiFormat() const;
 
     virtual ImageFormatType GetType() const = 0;
+    virtual size_t GetPitch(unsigned mipLevel, unsigned width) const = 0;
     virtual size_t GetSizeOfMipLevel(unsigned mipLevel, unsigned width, unsigned height, unsigned depth) const = 0;
-    virtual size_t GetPitch(unsigned width) const = 0;
 
     static const ImageFormatUnsigned FORMAT_R8_G8_B8;
+    static const ImageFormatUnsigned FORMAT_B8_G8_R8_X8;
     static const ImageFormatUnsigned FORMAT_R8_G8_B8_A8;
+    static const ImageFormatUnsigned FORMAT_B8_G8_R8_A8;
     static const ImageFormatUnsigned FORMAT_A8;
     static const ImageFormatUnsigned FORMAT_R16_G16_B16_A16_FLOAT; //TODO: Float not unsigned
     static const ImageFormatBlockCompressed FORMAT_BC1;
@@ -54,6 +60,7 @@ public:
     static const ImageFormatBlockCompressed FORMAT_BC3;
     static const ImageFormatBlockCompressed FORMAT_BC4;
     static const ImageFormatBlockCompressed FORMAT_BC5;
+    static const ImageFormat* const ALL_FORMATS[static_cast<unsigned>(ImageFormatId::MAX)];
 };
 
 class ImageFormatUnsigned final : public ImageFormat
@@ -62,24 +69,25 @@ public:
     unsigned m_bits_per_pixel;
     unsigned m_r_offset;
     unsigned m_r_size;
-    uint64_t m_r_mask;
     unsigned m_g_offset;
     unsigned m_g_size;
-    uint64_t m_g_mask;
     unsigned m_b_offset;
     unsigned m_b_size;
-    uint64_t m_b_mask;
     unsigned m_a_offset;
     unsigned m_a_size;
-    uint64_t m_a_mask;
 
     ImageFormatUnsigned(ImageFormatId id, DXGI_FORMAT dxgiFormat, unsigned bitsPerPixel, unsigned rOffset,
                         unsigned rSize, unsigned gOffset, unsigned gSize, unsigned bOffset, unsigned bSize,
                         unsigned aOffset, unsigned aSize);
 
     ImageFormatType GetType() const override;
+    size_t GetPitch(unsigned mipLevel, unsigned width) const override;
     size_t GetSizeOfMipLevel(unsigned mipLevel, unsigned width, unsigned height, unsigned depth) const override;
-    size_t GetPitch(unsigned width) const override;
+
+    bool HasR() const;
+    bool HasG() const;
+    bool HasB() const;
+    bool HasA() const;
 };
 
 class ImageFormatBlockCompressed final : public ImageFormat
@@ -91,6 +99,6 @@ public:
     ImageFormatBlockCompressed(ImageFormatId id, DXGI_FORMAT dxgiFormat, unsigned blockSize, unsigned bitsPerBlock);
 
     ImageFormatType GetType() const override;
+    size_t GetPitch(unsigned mipLevel, unsigned width) const override;
     size_t GetSizeOfMipLevel(unsigned mipLevel, unsigned width, unsigned height, unsigned depth) const override;
-    size_t GetPitch(unsigned width) const override;
 };

src/ObjCommon/Image/Texture.cpp

@@ -111,9 +111,9 @@ Texture2D& Texture2D::operator=(Texture2D&& other) noexcept
     return *this;
 }
 
-Texture::Type Texture2D::GetType() const
+TextureType Texture2D::GetTextureType() const
 {
-    return Type::TYPE_2D;
+    return TextureType::T_2D;
 }
 
 unsigned Texture2D::GetWidth() const
@@ -213,12 +213,17 @@ TextureCube& TextureCube::operator=(TextureCube&& other) noexcept
     return *this;
 }
 
-Texture::Type TextureCube::GetType() const
+TextureType TextureCube::GetTextureType() const
 {
-    return Type::TYPE_CUBE;
+    return TextureType::T_CUBE;
 }
 
 int TextureCube::GetFaceCount() const
+{
+    return 6;
+}
+
+size_t TextureCube::GetSizeOfMipLevel(const int mipLevel) const
 {
     return FACE_COUNT;
 }
@@ -290,9 +295,9 @@ Texture3D& Texture3D::operator=(Texture3D&& other) noexcept
     return *this;
 }
 
-Texture::Type Texture3D::GetType() const
+TextureType Texture3D::GetTextureType() const
 {
-    return Type::TYPE_3D;
+    return TextureType::T_3D;
 }
 
 unsigned Texture3D::GetWidth() const

src/ObjCommon/Image/Texture.h

@@ -2,16 +2,15 @@
 #include "ImageFormat.h"
 #include <cstdint>
 
-class Texture
+enum class TextureType
 {
-public:
+    T_2D,
-    enum class Type
+    T_CUBE,
-    {
+    T_3D
-        TYPE_2D,
-        TYPE_CUBE,
-        TYPE_3D
 };
 
+class Texture
+{
 protected:
     const ImageFormat* m_format;
     bool m_has_mip_maps;
@@ -28,8 +27,8 @@ public:
 
     Texture& operator=(const Texture& other) = delete;
 
+    virtual TextureType GetTextureType() const = 0;
     const ImageFormat* GetFormat() const;
-    virtual Type GetType() const = 0;
 
     virtual unsigned GetWidth() const = 0;
     virtual unsigned GetHeight() const = 0;
@@ -63,7 +62,7 @@ public:
     Texture2D& operator=(const Texture2D& other) = delete;
     Texture2D& operator=(Texture2D&& other) noexcept;
 
-    Type GetType() const override;
+    TextureType GetTextureType() const override;
 
     unsigned GetWidth() const override;
     unsigned GetHeight() const override;
@@ -90,10 +89,11 @@ public:
     TextureCube& operator=(const TextureCube& other) = delete;
     TextureCube& operator=(TextureCube&& other) noexcept;
 
-    Type GetType() const override;
+    TextureType GetTextureType() const override;
 
     int GetFaceCount() const override;
 
+    size_t GetSizeOfMipLevel(int mipLevel) const override;
     uint8_t* GetBufferForMipLevel(int mipLevel, int face) override;
 };
 
@@ -113,7 +113,7 @@ public:
     Texture3D& operator=(const Texture3D& other) = delete;
     Texture3D& operator=(Texture3D&& other) noexcept;
 
-    Type GetType() const override;
+    TextureType GetTextureType() const override;
 
     unsigned GetWidth() const override;
     unsigned GetHeight() const override;

src/ObjCommon/Image/TextureConverter.cpp

@@ -0,0 +1,229 @@
+#include "TextureConverter.h"
+
+#include <cassert>
+
+constexpr uint64_t TextureConverter::Mask1(const unsigned length)
+{
+    if (length >= sizeof(uint64_t) * 8)
+        return UINT64_MAX;
+
+    return UINT64_MAX >> (sizeof(uint64_t) * 8 - length);
+}
+
+void TextureConverter::SetPixelFunctions(const unsigned inBitCount, const unsigned outBitCount)
+{
+    switch (inBitCount)
+    {
+    case 16:
+        m_read_pixel_func = [](const void* offset, unsigned bitCount)
+        {
+            return static_cast<uint64_t>(*static_cast<const uint16_t*>(offset));
+        };
+        break;
+
+    case 32:
+        m_read_pixel_func = [](const void* offset, unsigned bitCount)
+        {
+            return static_cast<uint64_t>(*static_cast<const uint32_t*>(offset));
+        };
+        break;
+
+    case 64:
+        m_read_pixel_func = [](const void* offset, unsigned bitCount)
+        {
+            return *static_cast<const uint64_t*>(offset);
+        };
+        break;
+
+    default:
+        if (inBitCount <= 64)
+        {
+            m_read_pixel_func = [](const void* offset, const unsigned bitCount)
+            {
+                uint64_t result = 0;
+
+                for (auto pixelOffset = 0u; pixelOffset < bitCount; pixelOffset += 8)
+                {
+                    result |= (static_cast<uint64_t>(*(static_cast<const uint8_t*>(offset) + (pixelOffset / 8))) <<
+                        pixelOffset);
+                }
+
+                return result;
+            };
+        }
+        else
+        {
+            assert(false);
+            m_read_pixel_func = [](const void* offset, unsigned bitCount)
+            {
+                return 0ui64;
+            };
+        }
+        break;
+    }
+
+    switch (outBitCount)
+    {
+    case 16:
+        m_write_pixel_func = [](void* offset, const uint64_t pixel, unsigned bitCount)
+        {
+            *static_cast<uint16_t*>(offset) = static_cast<uint16_t>(pixel);
+        };
+        break;
+
+    case 32:
+        m_write_pixel_func = [](void* offset, const uint64_t pixel, unsigned bitCount)
+        {
+            *static_cast<uint32_t*>(offset) = static_cast<uint32_t>(pixel);
+        };
+        break;
+
+    case 64:
+        m_write_pixel_func = [](void* offset, const uint64_t pixel, unsigned bitCount)
+        {
+            *static_cast<uint64_t*>(offset) = pixel;
+        };
+        break;
+
+    default:
+        if (inBitCount <= 64)
+        {
+            m_write_pixel_func = [](void* offset, const uint64_t pixel, const unsigned bitCount)
+            {
+                for (auto pixelOffset = 0u; pixelOffset < bitCount; pixelOffset += 8)
+                {
+                    *(static_cast<uint8_t*>(offset) + (pixelOffset / 8)) = static_cast<uint8_t>(pixel >> pixelOffset);
+                }
+            };
+        }
+        else
+        {
+            assert(false);
+            m_write_pixel_func = [](void* offset, uint64_t pixel, unsigned bitCount)
+            {
+            };
+        }
+        break;
+    }
+}
+
+TextureConverter::TextureConverter(Texture* inputTexture, const ImageFormat* targetFormat)
+    : m_input_texture(inputTexture),
+      m_output_texture(nullptr),
+      m_input_format(inputTexture->GetFormat()),
+      m_output_format(targetFormat)
+{
+}
+
+void TextureConverter::CreateOutputTexture()
+{
+    switch (m_input_texture->GetTextureType())
+    {
+    case TextureType::T_2D:
+        m_output_texture = new Texture2D(m_output_format, m_input_texture->GetWidth(), m_input_texture->GetHeight(),
+                                         m_input_texture->HasMipMaps());
+        break;
+
+    case TextureType::T_CUBE:
+        m_output_texture = new TextureCube(m_output_format, m_input_texture->GetWidth(), m_input_texture->GetHeight(),
+                                           m_input_texture->HasMipMaps());
+        break;
+
+    case TextureType::T_3D:
+        m_output_texture = new Texture3D(m_output_format, m_input_texture->GetWidth(), m_input_texture->GetHeight(),
+                                         m_input_texture->GetDepth(), m_input_texture->HasMipMaps());
+        break;
+    default:
+        assert(false);
+        break;
+    }
+
+    m_output_texture->Allocate();
+}
+
+void TextureConverter::ReorderUnsignedToUnsigned() const
+{
+    const auto* inputFormat = dynamic_cast<const ImageFormatUnsigned*>(m_input_format);
+    const auto* outputFormat = dynamic_cast<const ImageFormatUnsigned*>(m_output_format);
+    const auto mipCount = m_input_texture->HasMipMaps() ? m_input_texture->GetMipMapCount() : 1;
+
+    const auto rInputMask = inputFormat->HasR() ? Mask1(inputFormat->m_r_size) << inputFormat->m_r_offset : 0;
+    const auto gInputMask = inputFormat->HasG() ? Mask1(inputFormat->m_g_size) << inputFormat->m_g_offset : 0;
+    const auto bInputMask = inputFormat->HasB() ? Mask1(inputFormat->m_b_size) << inputFormat->m_b_offset : 0;
+    const auto aInputMask = inputFormat->HasA() ? Mask1(inputFormat->m_a_size) << inputFormat->m_a_offset : 0;
+    const bool rConvert = rInputMask != 0 && outputFormat->m_r_size > 0;
+    const bool gConvert = gInputMask != 0 && outputFormat->m_g_size > 0;
+    const bool bConvert = bInputMask != 0 && outputFormat->m_b_size > 0;
+    const bool aConvert = aInputMask != 0 && outputFormat->m_a_size > 0;
+
+    for (auto mipLevel = 0; mipLevel < mipCount; mipLevel++)
+    {
+        const auto mipLevelSize = m_input_texture->GetSizeOfMipLevel(mipLevel);
+        const auto* inputBuffer = m_input_texture->GetBufferForMipLevel(mipLevel);
+        auto* outputBuffer = m_output_texture->GetBufferForMipLevel(mipLevel);
+
+        const auto inputBytePerPixel = inputFormat->m_bits_per_pixel / 8;
+        const auto outputBytePerPixel = outputFormat->m_bits_per_pixel / 8;
+
+        auto outputOffset = 0u;
+        for (auto inputOffset = 0u; inputOffset < mipLevelSize; inputOffset += inputBytePerPixel, outputOffset +=
+             outputBytePerPixel)
+        {
+            uint64_t outPixel = 0;
+            const auto inPixel = m_read_pixel_func(&inputBuffer[inputOffset], inputFormat->m_bits_per_pixel);
+
+            if (rConvert)
+                outPixel |= (inPixel & rInputMask) >> inputFormat->m_r_offset << outputFormat->m_r_offset;
+            if (gConvert)
+                outPixel |= (inPixel & gInputMask) >> inputFormat->m_g_offset << outputFormat->m_g_offset;
+            if (bConvert)
+                outPixel |= (inPixel & bInputMask) >> inputFormat->m_b_offset << outputFormat->m_b_offset;
+            if (aConvert)
+                outPixel |= (inPixel & aInputMask) >> inputFormat->m_a_offset << outputFormat->m_a_offset;
+
+            m_write_pixel_func(&outputBuffer[outputOffset], outPixel, outputFormat->m_bits_per_pixel);
+        }
+    }
+}
+
+void TextureConverter::ConvertUnsignedToUnsigned()
+{
+    const auto* inputFormat = dynamic_cast<const ImageFormatUnsigned*>(m_input_format);
+    const auto* outputFormat = dynamic_cast<const ImageFormatUnsigned*>(m_output_format);
+
+    assert(inputFormat->m_bits_per_pixel <= 64);
+    assert(outputFormat->m_bits_per_pixel <= 64);
+
+    SetPixelFunctions(inputFormat->m_bits_per_pixel, outputFormat->m_bits_per_pixel);
+
+    if (inputFormat->m_r_size == outputFormat->m_r_size
+        && inputFormat->m_g_size == outputFormat->m_g_size
+        && inputFormat->m_b_size == outputFormat->m_b_size
+        && inputFormat->m_a_size == outputFormat->m_a_size)
+    {
+        ReorderUnsignedToUnsigned();
+    }
+    else
+    {
+        // Unsupported as of now
+        assert(false);
+    }
+}
+
+Texture* TextureConverter::Convert()
+{
+    CreateOutputTexture();
+
+    if (m_input_format->GetType() == ImageFormatType::UNSIGNED
+        && m_output_format->GetType() == ImageFormatType::UNSIGNED)
+    {
+        ConvertUnsignedToUnsigned();
+    }
+    else
+    {
+        // Unsupported as of now
+        assert(false);
+    }
+
+    return m_output_texture;
+}

src/ObjCommon/Image/TextureConverter.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <functional>
+
+#include "Texture.h"
+
+class TextureConverter
+{
+    Texture* m_input_texture;
+    Texture* m_output_texture;
+    const ImageFormat* m_input_format;
+    const ImageFormat* m_output_format;
+
+    std::function<uint64_t(const void* offset, unsigned bitCount)> m_read_pixel_func;
+    std::function<void(void* offset, uint64_t pixel, unsigned bitCount)> m_write_pixel_func;
+
+    static constexpr uint64_t Mask1(unsigned length);
+    void SetPixelFunctions(unsigned inBitCount, unsigned outBitCount);
+
+    void CreateOutputTexture();
+
+    void ReorderUnsignedToUnsigned() const;
+    void ConvertUnsignedToUnsigned();
+
+public:
+
+    TextureConverter(Texture* inputTexture, const ImageFormat* targetFormat);
+
+    Texture* Convert();
+};

src/ObjWriting/Image/DdsWriter.cpp

@@ -1,269 +1,229 @@
 #include "DdsWriter.h"
 
 #include <cassert>
+#include <map>
+#include <memory>
+
 
 #include "Image/DdsTypes.h"
+#include "Image/TextureConverter.h"
 
-using namespace dds;
+const std::map<ImageFormatId, ImageFormatId> DDS_CONVERSION_TABLE
+{
+    {ImageFormatId::R8_G8_B8, ImageFormatId::B8_G8_R8_X8},
+};
 
 class DdsWriterInternal
 {
-    static constexpr uint32_t DDS_MAGIC = MakeFourCc('D', 'D', 'S', ' ');
-    static constexpr uint32_t DDS_PF_DXT10_EXTENSION = MakeFourCc('D', 'X', '1', '0');
-    static constexpr uint32_t DDS_PF_BC1 = MakeFourCc('D', 'X', 'T', '1');
-    static constexpr uint32_t DDS_PF_BC2 = MakeFourCc('D', 'X', 'T', '3');
-    static constexpr uint32_t DDS_PF_BC3 = MakeFourCc('D', 'X', 'T', '5');
-
-public:
-    enum class ImageFormatSupportStatus
-    {
-        UNSUPPORTED,
-        SUPPORTED_WITH_SIMPLE_HEADER,
-        SUPPORTED_WITH_DXT10_HEADER
-    };
-
-private:
     FileAPI::IFile* m_file;
     Texture* m_texture;
-    ImageFormatSupportStatus m_support_status;
+    std::unique_ptr<Texture> m_converted_texture;
+    bool m_use_dx10_extension;
 
-    void PrepareHeader(DDS_HEADER* header) const
+    static constexpr unsigned Mask1(const unsigned length)
     {
-        header->dwSize = sizeof DDS_HEADER;
+        if (length >= sizeof(unsigned) * 8)
-        header->dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
+            return UINT32_MAX;
 
-        if (m_texture->HasMipMaps())
+        return UINT32_MAX >> (sizeof(unsigned) * 8 - length);
-            header->dwFlags |= DDSD_MIPMAPCOUNT;
-
-        if (m_texture->GetFormat()->GetType() == ImageFormatType::BLOCK_COMPRESSED)
-            header->dwFlags |= DDSD_LINEARSIZE;
-        else
-            header->dwFlags |= DDSD_PITCH;
-
-        if (m_texture->GetType() == Texture::Type::TYPE_3D)
-            header->dwFlags |= DDSD_DEPTH;
-
-        header->dwWidth = m_texture->GetWidth();
-        header->dwHeight = m_texture->GetHeight();
-        header->dwDepth = m_texture->GetDepth();
-        header->dwPitchOrLinearSize = m_texture->GetFormat()->GetPitch(m_texture->GetWidth());
-        header->dwMipMapCount = m_texture->HasMipMaps() ? m_texture->GetMipMapCount() : 1;
-
-        memset(header->dwReserved1, 0, sizeof DDS_HEADER::dwReserved1);
-
-        header->dwCaps = DDSCAPS_TEXTURE;
-        if (m_texture->HasMipMaps())
-            header->dwCaps |= DDSCAPS_MIPMAP;
-        if (m_texture->GetType() == Texture::Type::TYPE_CUBE || m_texture->HasMipMaps())
-            header->dwCaps |= DDSCAPS_COMPLEX;
-
-        header->dwCaps2 = 0;
-        if (m_texture->GetType() == Texture::Type::TYPE_CUBE)
-        {
-            header->dwCaps2 |=
-                DDSCAPS2_CUBEMAP
-                | DDSCAPS2_CUBEMAP_POSITIVEX | DDSCAPS2_CUBEMAP_NEGATIVEX
-                | DDSCAPS2_CUBEMAP_POSITIVEY | DDSCAPS2_CUBEMAP_NEGATIVEY
-                | DDSCAPS2_CUBEMAP_POSITIVEZ | DDSCAPS2_CUBEMAP_NEGATIVEZ;
-        }
-        else if (m_texture->GetType() == Texture::Type::TYPE_3D)
-        {
-            header->dwCaps2 |= DDSCAPS2_VOLUME;
     }
 
-        header->dwCaps3 = 0;
+    void PopulatePixelFormatBlockCompressed(DDS_PIXELFORMAT& pf, const ImageFormatBlockCompressed* format)
-        header->dwCaps4 = 0;
+    {
-        header->dwReserved2 = 0;
+        pf.dwSize = sizeof(DDS_PIXELFORMAT);
-    }
+        pf.dwFlags = DDPF_FOURCC;
+        pf.dwRGBBitCount = 0;
+        pf.dwRBitMask = 0;
+        pf.dwGBitMask = 0;
+        pf.dwBBitMask = 0;
+        pf.dwABitMask = 0;
 
-    void SetPixelFormat(DDS_PIXELFORMAT* pixelFormat) const
+        // Use standard pixel format for DXT1-5 for maximum compatibility and only otherwise use DX10 extension
+        switch (format->GetDxgiFormat())
         {
-        pixelFormat->dwSize = sizeof DDS_PIXELFORMAT;
+        case DXGI_FORMAT_BC1_UNORM:
-        pixelFormat->dwFlags = 0;
+            pf.dwFourCC = MakeFourCc('D', 'X', 'T', '1');
-
-        const auto* imageFormat = m_texture->GetFormat();
-        switch (imageFormat->GetType())
-        {
-        case ImageFormatType::UNSIGNED:
-            {
-                const auto* imageFormatUnsigned = dynamic_cast<const ImageFormatUnsigned*>(imageFormat);
-
-                if (imageFormatUnsigned->m_r_size == 0
-                    && imageFormatUnsigned->m_g_size == 0
-                    && imageFormatUnsigned->m_b_size == 0
-                    && imageFormatUnsigned->m_a_size > 0)
-                {
-                    pixelFormat->dwFlags |= DDPF_ALPHA;
-                }
-                else
-                {
-                    if (imageFormatUnsigned->m_r_size > 0
-                        && imageFormatUnsigned->m_g_size == 0
-                        && imageFormatUnsigned->m_b_size == 0)
-                    {
-                        pixelFormat->dwFlags |= DDPF_LUMINANCE;
-                    }
-                    else if (imageFormatUnsigned->m_r_size > 0
-                        || imageFormatUnsigned->m_g_size > 0
-                        || imageFormatUnsigned->m_b_size > 0)
-                    {
-                        pixelFormat->dwFlags |= DDPF_RGB;
-                    }
-
-                    if (imageFormatUnsigned->m_a_size > 0)
-                    {
-                        pixelFormat->dwFlags |= DDPF_ALPHAPIXELS;
-                    }
-                }
-
-                pixelFormat->dwRGBBitCount = imageFormatUnsigned->m_bits_per_pixel;
-                pixelFormat->dwRBitMask = static_cast<uint32_t>(imageFormatUnsigned->m_r_mask);
-                pixelFormat->dwGBitMask = static_cast<uint32_t>(imageFormatUnsigned->m_g_mask);
-                pixelFormat->dwBBitMask = static_cast<uint32_t>(imageFormatUnsigned->m_b_mask);
-                pixelFormat->dwABitMask = static_cast<uint32_t>(imageFormatUnsigned->m_a_mask);
-            }
             break;
+        case DXGI_FORMAT_BC2_UNORM:
+            pf.dwFourCC = MakeFourCc('D', 'X', 'T', '3');
+            break;
+        case DXGI_FORMAT_BC3_UNORM:
+            pf.dwFourCC = MakeFourCc('D', 'X', 'T', '5');
+            break;
+        default:
+            m_use_dx10_extension = true;
+            pf.dwFourCC = MakeFourCc('D', 'X', '1', '0');
+            break;
+        }
+    }
+
+    static void PopulatePixelFormatUnsigned(DDS_PIXELFORMAT& pf, const ImageFormatUnsigned* format)
+    {
+        pf.dwSize = sizeof(DDS_PIXELFORMAT);
+        pf.dwFourCC = 0;
+        pf.dwRGBBitCount = format->m_bits_per_pixel;
+        pf.dwRBitMask = format->HasR() ? Mask1(format->m_r_size) << format->m_r_offset : 0;
+        pf.dwGBitMask = format->HasG() ? Mask1(format->m_g_size) << format->m_g_offset : 0;
+        pf.dwBBitMask = format->HasB() ? Mask1(format->m_b_size) << format->m_b_offset : 0;
+        pf.dwABitMask = format->HasA() ? Mask1(format->m_a_size) << format->m_a_offset : 0;
+
+        pf.dwFlags = 0;
+        if (format->HasA())
+            pf.dwFlags |= DDPF_ALPHAPIXELS;
+
+        if (format->HasR() && !format->HasG() && !format->HasB())
+            pf.dwFlags |= DDPF_LUMINANCE;
+        else
+            pf.dwFlags |= DDPF_RGB;
+    }
+
+    void PopulatePixelFormat(DDS_PIXELFORMAT& pf)
+    {
+        const auto* format = m_texture->GetFormat();
+
+        switch (format->GetType())
+        {
         case ImageFormatType::BLOCK_COMPRESSED:
-            {
+            PopulatePixelFormatBlockCompressed(pf, dynamic_cast<const ImageFormatBlockCompressed*>(format));
-                pixelFormat->dwFlags |= DDPF_FOURCC;
-                pixelFormat->dwRGBBitCount = 0;
-                pixelFormat->dwRBitMask = 0;
-                pixelFormat->dwGBitMask = 0;
-                pixelFormat->dwBBitMask = 0;
-                pixelFormat->dwABitMask = 0;
-
-                switch (imageFormat->GetId())
-                {
-                case ImageFormatId::BC1:
-                    pixelFormat->dwFourCC = DDS_PF_BC1;
             break;
-                case ImageFormatId::BC2:
+        case ImageFormatType::UNSIGNED:
-                    pixelFormat->dwFourCC = DDS_PF_BC2;
+            PopulatePixelFormatUnsigned(pf, dynamic_cast<const ImageFormatUnsigned*>(format));
-                    break;
-                case ImageFormatId::BC3:
-                    pixelFormat->dwFourCC = DDS_PF_BC3;
             break;
         default:
             assert(false);
             break;
         }
     }
-            break;
-        default:
-            break;
-        }
-    }
 
-    static void MarkHeaderAsExtendedByHeaderDxt10(DDS_PIXELFORMAT* pixelFormat)
+    void PopulateDdsHeader(DDS_HEADER& header)
     {
-        pixelFormat->dwSize = sizeof DDS_PIXELFORMAT;
+        header.dwSize = sizeof header;
-        pixelFormat->dwFlags = DDPF_FOURCC;
+        header.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
-        pixelFormat->dwFourCC = DDS_PF_DXT10_EXTENSION;
+
-        pixelFormat->dwRGBBitCount = 0;
+        if (m_texture->HasMipMaps())
-        pixelFormat->dwRBitMask = 0;
+            header.dwFlags |= DDSD_MIPMAPCOUNT;
-        pixelFormat->dwGBitMask = 0;
+
-        pixelFormat->dwBBitMask = 0;
+        if (m_texture->GetFormat()->GetType() == ImageFormatType::BLOCK_COMPRESSED)
-        pixelFormat->dwABitMask = 0;
+            header.dwFlags |= DDSD_LINEARSIZE;
+        else
+            header.dwFlags |= DDSD_PITCH;
+
+        if (m_texture->GetDepth() > 1)
+            header.dwFlags |= DDSD_DEPTH;
+
+        header.dwHeight = m_texture->GetHeight();
+        header.dwWidth = m_texture->GetWidth();
+        header.dwDepth = m_texture->GetDepth();
+        header.dwPitchOrLinearSize = m_texture->GetFormat()->GetPitch(0, m_texture->GetWidth());
+        header.dwMipMapCount = m_texture->HasMipMaps() ? m_texture->GetMipMapCount() : 1;
+
+        PopulatePixelFormat(header.ddspf);
+
+        header.dwCaps = DDSCAPS_TEXTURE;
+
+        if (m_texture->HasMipMaps())
+            header.dwCaps |= DDSCAPS_COMPLEX | DDSCAPS_MIPMAP;
+
+        if (m_texture->GetTextureType() == TextureType::T_CUBE)
+            header.dwCaps |= DDSCAPS_COMPLEX;
+
+        header.dwCaps2 = 0;
+
+        if (m_texture->GetTextureType() == TextureType::T_CUBE)
+        {
+            header.dwCaps2 |=
+                DDSCAPS2_CUBEMAP
+                | DDSCAPS2_CUBEMAP_POSITIVEX | DDSCAPS2_CUBEMAP_NEGATIVEX
+                | DDSCAPS2_CUBEMAP_POSITIVEY | DDSCAPS2_CUBEMAP_NEGATIVEY
+                | DDSCAPS2_CUBEMAP_POSITIVEZ | DDSCAPS2_CUBEMAP_NEGATIVEZ;
         }
 
-    void PrepareHeaderDxt10(DDS_HEADER_DXT10* header)
+        header.dwCaps3 = 0;
-    {
+        header.dwCaps4 = 0;
-        header->dxgiFormat = m_texture->GetFormat()->GetDxgiFormat();
+        header.dwReserved2 = 0;
-
-        switch (m_texture->GetType())
-        {
-        case Texture::Type::TYPE_2D:
-        case Texture::Type::TYPE_CUBE:
-            header->resourceDimension = DDS_DIMENSION_TEXTURE2D;
-            break;
-        case Texture::Type::TYPE_3D:
-            header->resourceDimension = DDS_DIMENSION_TEXTURE3D;
-            break;
     }
 
-        header->miscFlag = 0;
+    void PopulateDxt10Header(DDS_HEADER_DXT10& header) const
-        if (m_texture->GetType() == Texture::Type::TYPE_CUBE)
+    {
-            header->miscFlag |= DDS_RESOURCE_MISC_TEXTURECUBE;
+        header.dxgiFormat = m_texture->GetFormat()->GetDxgiFormat();
+        header.miscFlag = 0;
+        header.miscFlags2 = 0;
 
-        header->arraySize = m_texture->GetFaceCount();
+        switch (m_texture->GetTextureType())
-        header->miscFlags2 = 0;
+        {
+        case TextureType::T_2D:
+            header.resourceDimension = D3D10_RESOURCE_DIMENSION_TEXTURE2D;
+            header.arraySize = 1;
+            break;
+        case TextureType::T_CUBE:
+            header.resourceDimension = D3D10_RESOURCE_DIMENSION_TEXTURE2D;
+            header.arraySize = 6;
+            header.miscFlag |= DDS_RESOURCE_MISC_TEXTURECUBE;
+            break;
+        case TextureType::T_3D:
+            header.resourceDimension = D3D10_RESOURCE_DIMENSION_TEXTURE3D;
+            header.arraySize = 1;
+            break;
+        }
+    }
+
+    void ConvertTextureIfNecessary()
+    {
+        auto entry = DDS_CONVERSION_TABLE.find(m_texture->GetFormat()->GetId());
+
+        if(entry != DDS_CONVERSION_TABLE.end())
+        {
+            TextureConverter converter(m_texture, ImageFormat::ALL_FORMATS[static_cast<unsigned>(entry->second)]);
+            m_converted_texture = std::unique_ptr<Texture>(converter.Convert());
+            m_texture = m_converted_texture.get();
+        }
     }
 
 public:
-    static ImageFormatSupportStatus GetSupportStatusForImageFormat(const ImageFormat* format)
+    static bool SupportsImageFormat(const ImageFormat* imageFormat)
     {
-        assert(format != nullptr);
+        return true;
-
-        if (auto* imageFormatUnsigned = dynamic_cast<const ImageFormatUnsigned*>(format))
-        {
-            if (imageFormatUnsigned->m_bits_per_pixel <= sizeof uint32_t * 8)
-                return ImageFormatSupportStatus::SUPPORTED_WITH_SIMPLE_HEADER;
-        }
-        else
-        {
-            switch (format->GetId())
-            {
-            case ImageFormatId::BC1:
-            case ImageFormatId::BC2:
-            case ImageFormatId::BC3:
-                return ImageFormatSupportStatus::SUPPORTED_WITH_SIMPLE_HEADER;
-            default:
-                break;
-            }
     }
 
-        return format->GetDxgiFormat() != DXGI_FORMAT_UNKNOWN
+    static std::string GetFileExtension()
-                   ? ImageFormatSupportStatus::SUPPORTED_WITH_DXT10_HEADER
+    {
-                   : ImageFormatSupportStatus::UNSUPPORTED;
+        return ".dds";
     }
 
     DdsWriterInternal(FileAPI::IFile* file, Texture* texture)
+        : m_file(file),
+          m_texture(texture),
+          m_use_dx10_extension(false)
     {
-        m_file = file;
-        m_texture = texture;
-        m_support_status = GetSupportStatusForImageFormat(texture->GetFormat());
     }
 
-    bool DumpImage()
+    void DumpImage()
     {
-        if (m_file->Write(&DDS_MAGIC, sizeof uint32_t, 1) != 1)
+        ConvertTextureIfNecessary();
-            return false;
 
-        DDS_HEADER ddsHeader{};
+        DDS_HEADER header{};
-        PrepareHeader(&ddsHeader);
+        PopulateDdsHeader(header);
-        if (m_support_status == ImageFormatSupportStatus::SUPPORTED_WITH_SIMPLE_HEADER)
+
+        constexpr uint32_t magic = MakeFourCc('D', 'D', 'S', ' ');
+
+        m_file->Write(&magic, sizeof magic, 1);
+        m_file->Write(&header, sizeof header, 1);
+
+        if (m_use_dx10_extension)
         {
-            SetPixelFormat(&ddsHeader.ddspf);
+            DDS_HEADER_DXT10 dxt10{};
-
+            PopulateDxt10Header(dxt10);
-            if (m_file->Write(&ddsHeader, sizeof DDS_HEADER, 1) != 1)
+            m_file->Write(&dxt10, sizeof dxt10, 1);
-                return false;
-        }
-        else if (m_support_status == ImageFormatSupportStatus::SUPPORTED_WITH_DXT10_HEADER)
-        {
-            DDS_HEADER_DXT10 ddsHeaderDxt10{};
-
-            MarkHeaderAsExtendedByHeaderDxt10(&ddsHeader.ddspf);
-            PrepareHeaderDxt10(&ddsHeaderDxt10);
-
-            if (m_file->Write(&ddsHeader, sizeof DDS_HEADER, 1) != 1
-                || m_file->Write(&ddsHeaderDxt10, sizeof DDS_HEADER_DXT10, 1) != 1)
-                return false;
         }
 
         const int mipCount = m_texture->HasMipMaps() ? m_texture->GetMipMapCount() : 1;
-        for (int face = 0; face < m_texture->GetFaceCount(); face++)
+        for (auto mipLevel = 0; mipLevel < mipCount; mipLevel++)
         {
-            for (int mipLevel = 0; mipLevel < mipCount; mipLevel++)
+            const auto* buffer = m_texture->GetBufferForMipLevel(mipLevel);
-            {
+            const auto mipLevelSize = m_texture->GetSizeOfMipLevel(mipLevel);
-                const size_t sizeOfMipLevel = m_texture->GetSizeOfMipLevel(mipLevel);
+            m_file->Write(buffer, 1, mipLevelSize);
-
-                if (m_file->Write(m_texture->GetBufferForMipLevel(mipLevel, face), 1, sizeOfMipLevel) != sizeOfMipLevel)
-                    return false;
         }
     }
-
-        return true;
-    }
 };
 
 DdsWriter::~DdsWriter()
@@ -271,17 +231,16 @@ DdsWriter::~DdsWriter()
 
 bool DdsWriter::SupportsImageFormat(const ImageFormat* imageFormat)
 {
-    return DdsWriterInternal::GetSupportStatusForImageFormat(imageFormat)
+    return DdsWriterInternal::SupportsImageFormat(imageFormat);
-        != DdsWriterInternal::ImageFormatSupportStatus::UNSUPPORTED;
 }
 
 std::string DdsWriter::GetFileExtension()
 {
-    return ".dds";
+    return DdsWriterInternal::GetFileExtension();
 }
 
 void DdsWriter::DumpImage(FileAPI::IFile* file, Texture* texture)
 {
-    DdsWriterInternal writer(file, texture);
+    DdsWriterInternal internal(file, texture);
-    writer.DumpImage();
+    internal.DumpImage();
 }

test/ObjCommonTests.lua

@@ -0,0 +1,43 @@
+ObjCommonTests = {}
+
+function ObjCommonTests:include()
+    
+end
+
+function ObjCommonTests:link()
+	if References:link("ObjCommonTests") then
+		links "ObjCommonTests"
+	end
+end
+
+function ObjCommonTests:use()
+	
+end
+
+function ObjCommonTests:project()
+	References:reset()
+	local folder = TestFolder();
+
+	project "ObjCommonTests"
+        targetdir(TargetDirectoryTest)
+		location "%{wks.location}/test/%{prj.name}"
+		kind "SharedLib"
+		language "C++"
+		
+		files {
+			path.join(folder, "ObjCommonTests/**.h"), 
+			path.join(folder, "ObjCommonTests/**.cpp")
+		}
+		
+        vpaths {
+			["*"] = {
+				path.join(folder, "ObjCommonTests"),
+				path.join(BuildFolder(), "src/ZoneCode")
+			}
+		}
+		
+		self:include()
+		ObjCommon:include()
+
+		ObjCommon:link()
+end

test/ObjCommonTests/Image/ImageFormatTests.cpp

@@ -0,0 +1,22 @@
+#include "CppUnitTest.h"
+#include "Image/ImageFormat.h"
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace ObjCommonTests
+{
+	TEST_CLASS(ImageFormatTests)
+	{
+	public:
+		TEST_METHOD(EnsureAllFormatsArrayIndicesAreIds)
+		{
+			Assert::AreEqual(static_cast<unsigned int>(ImageFormatId::MAX), _countof(ImageFormat::ALL_FORMATS));
+
+			for(unsigned i = 0; i < _countof(ImageFormat::ALL_FORMATS); i++)
+			{
+				Assert::IsNotNull(ImageFormat::ALL_FORMATS[i]);
+				Assert::AreEqual(i, static_cast<unsigned>(ImageFormat::ALL_FORMATS[i]->GetId()));
+			}
+		}
+	};
+}