Merge pull request #627 from Subv/bc7u
GPU: Implemented the BC7U texture format.
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						d990f2355b
					
				@ -102,6 +102,8 @@ static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_form
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    {GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
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     true},                                                                                 // DXT45
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    {GL_COMPRESSED_RED_RGTC1, GL_RED, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm, true}, // DXN1
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    {GL_COMPRESSED_RGBA_BPTC_UNORM_ARB, GL_RGB, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
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     true},                                                             // BC7U
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    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, ComponentType::UNorm, false}, // ASTC_2D_4X4
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    // DepthStencil formats
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@ -191,8 +193,9 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
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        MortonCopy<true, PixelFormat::R11FG11FB10F>, MortonCopy<true, PixelFormat::RGBA32UI>,
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        MortonCopy<true, PixelFormat::DXT1>,         MortonCopy<true, PixelFormat::DXT23>,
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        MortonCopy<true, PixelFormat::DXT45>,        MortonCopy<true, PixelFormat::DXN1>,
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        MortonCopy<true, PixelFormat::ASTC_2D_4X4>,  MortonCopy<true, PixelFormat::Z24S8>,
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        MortonCopy<true, PixelFormat::S8Z24>,        MortonCopy<true, PixelFormat::Z32F>,
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        MortonCopy<true, PixelFormat::BC7U>,         MortonCopy<true, PixelFormat::ASTC_2D_4X4>,
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        MortonCopy<true, PixelFormat::Z24S8>,        MortonCopy<true, PixelFormat::S8Z24>,
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        MortonCopy<true, PixelFormat::Z32F>,
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};
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static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
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@ -206,7 +209,8 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
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        MortonCopy<false, PixelFormat::RGBA16F>,
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        MortonCopy<false, PixelFormat::R11FG11FB10F>,
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        MortonCopy<false, PixelFormat::RGBA32UI>,
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        // TODO(Subv): Swizzling the DXT1/DXT23/DXT45/DXN1 formats is not yet supported
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        // TODO(Subv): Swizzling the DXT1/DXT23/DXT45/DXN1/BC7U formats is not yet supported
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        nullptr,
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        nullptr,
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        nullptr,
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        nullptr,
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@ -35,14 +35,15 @@ struct SurfaceParams {
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        DXT23 = 9,
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        DXT45 = 10,
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        DXN1 = 11, // This is also known as BC4
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        ASTC_2D_4X4 = 12,
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        BC7U = 12,
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        ASTC_2D_4X4 = 13,
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        MaxColorFormat,
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        // DepthStencil formats
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        Z24S8 = 13,
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        S8Z24 = 14,
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        Z32F = 15,
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        Z24S8 = 14,
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        S8Z24 = 15,
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        Z32F = 16,
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        MaxDepthStencilFormat,
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@ -92,6 +93,7 @@ struct SurfaceParams {
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            4, // DXT23
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            4, // DXT45
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            4, // DXN1
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            4, // BC7U
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            4, // ASTC_2D_4X4
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            1, // Z24S8
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            1, // S8Z24
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@ -119,6 +121,7 @@ struct SurfaceParams {
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            128, // DXT23
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            128, // DXT45
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            64,  // DXN1
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            128, // BC7U
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            32,  // ASTC_2D_4X4
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            32,  // Z24S8
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            32,  // S8Z24
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@ -192,6 +195,8 @@ struct SurfaceParams {
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            return PixelFormat::DXT45;
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        case Tegra::Texture::TextureFormat::DXN1:
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            return PixelFormat::DXN1;
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        case Tegra::Texture::TextureFormat::BC7U:
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            return PixelFormat::BC7U;
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        case Tegra::Texture::TextureFormat::ASTC_2D_4X4:
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            return PixelFormat::ASTC_2D_4X4;
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        default:
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@ -227,6 +232,8 @@ struct SurfaceParams {
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            return Tegra::Texture::TextureFormat::DXT45;
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        case PixelFormat::DXN1:
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            return Tegra::Texture::TextureFormat::DXN1;
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        case PixelFormat::BC7U:
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            return Tegra::Texture::TextureFormat::BC7U;
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        case PixelFormat::ASTC_2D_4X4:
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            return Tegra::Texture::TextureFormat::ASTC_2D_4X4;
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        default:
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@ -52,6 +52,7 @@ u32 BytesPerPixel(TextureFormat format) {
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        return 8;
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    case TextureFormat::DXT23:
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    case TextureFormat::DXT45:
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    case TextureFormat::BC7U:
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        // In this case a 'pixel' actually refers to a 4x4 tile.
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        return 16;
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    case TextureFormat::ASTC_2D_4X4:
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@ -98,6 +99,7 @@ std::vector<u8> UnswizzleTexture(VAddr address, TextureFormat format, u32 width,
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    case TextureFormat::DXT23:
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    case TextureFormat::DXT45:
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    case TextureFormat::DXN1:
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    case TextureFormat::BC7U:
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        // In the DXT and DXN formats, each 4x4 tile is swizzled instead of just individual pixel
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        // values.
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        CopySwizzledData(width / 4, height / 4, bytes_per_pixel, bytes_per_pixel, data,
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@ -155,6 +157,7 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
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    case TextureFormat::DXT23:
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    case TextureFormat::DXT45:
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    case TextureFormat::DXN1:
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    case TextureFormat::BC7U:
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    case TextureFormat::ASTC_2D_4X4:
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    case TextureFormat::A8R8G8B8:
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    case TextureFormat::A2B10G10R10:
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