GPU: Implemented the BC7U texture format.

Note: Our version of glad exports GL_COMPRESSED_RGBA_BPTC_UNORM as GL_COMPRESSED_RGBA_BPTC_UNORM_ARB, maybe it's time we update it.

src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

@@ -102,6 +102,8 @@ static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_form
     {GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
      true},                                                                                 // DXT45
     {GL_COMPRESSED_RED_RGTC1, GL_RED, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm, true}, // DXN1
+    {GL_COMPRESSED_RGBA_BPTC_UNORM_ARB, GL_RGB, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
+     true},                                                             // BC7U
     {GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, ComponentType::UNorm, false}, // ASTC_2D_4X4
 
     // DepthStencil formats
@@ -191,8 +193,9 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
         MortonCopy<true, PixelFormat::R11FG11FB10F>, MortonCopy<true, PixelFormat::RGBA32UI>,
         MortonCopy<true, PixelFormat::DXT1>,         MortonCopy<true, PixelFormat::DXT23>,
         MortonCopy<true, PixelFormat::DXT45>,        MortonCopy<true, PixelFormat::DXN1>,
-        MortonCopy<true, PixelFormat::ASTC_2D_4X4>,  MortonCopy<true, PixelFormat::Z24S8>,
-        MortonCopy<true, PixelFormat::S8Z24>,        MortonCopy<true, PixelFormat::Z32F>,
+        MortonCopy<true, PixelFormat::BC7U>,         MortonCopy<true, PixelFormat::ASTC_2D_4X4>,
+        MortonCopy<true, PixelFormat::Z24S8>,        MortonCopy<true, PixelFormat::S8Z24>,
+        MortonCopy<true, PixelFormat::Z32F>,
 };
 
 static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
@@ -206,7 +209,8 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
         MortonCopy<false, PixelFormat::RGBA16F>,
         MortonCopy<false, PixelFormat::R11FG11FB10F>,
         MortonCopy<false, PixelFormat::RGBA32UI>,
-        // TODO(Subv): Swizzling the DXT1/DXT23/DXT45/DXN1 formats is not yet supported
+        // TODO(Subv): Swizzling the DXT1/DXT23/DXT45/DXN1/BC7U formats is not yet supported
+        nullptr,
         nullptr,
         nullptr,
         nullptr,

src/video_core/renderer_opengl/gl_rasterizer_cache.h

@@ -35,14 +35,15 @@ struct SurfaceParams {
         DXT23 = 9,
         DXT45 = 10,
         DXN1 = 11, // This is also known as BC4
-        ASTC_2D_4X4 = 12,
+        BC7U = 12,
+        ASTC_2D_4X4 = 13,
 
         MaxColorFormat,
 
         // DepthStencil formats
-        Z24S8 = 13,
-        S8Z24 = 14,
-        Z32F = 15,
+        Z24S8 = 14,
+        S8Z24 = 15,
+        Z32F = 16,
 
         MaxDepthStencilFormat,
 
@@ -92,6 +93,7 @@ struct SurfaceParams {
             4, // DXT23
             4, // DXT45
             4, // DXN1
+            4, // BC7U
             4, // ASTC_2D_4X4
             1, // Z24S8
             1, // S8Z24
@@ -119,6 +121,7 @@ struct SurfaceParams {
             128, // DXT23
             128, // DXT45
             64,  // DXN1
+            128, // BC7U
             32,  // ASTC_2D_4X4
             32,  // Z24S8
             32,  // S8Z24
@@ -192,6 +195,8 @@ struct SurfaceParams {
             return PixelFormat::DXT45;
         case Tegra::Texture::TextureFormat::DXN1:
             return PixelFormat::DXN1;
+        case Tegra::Texture::TextureFormat::BC7U:
+            return PixelFormat::BC7U;
         case Tegra::Texture::TextureFormat::ASTC_2D_4X4:
             return PixelFormat::ASTC_2D_4X4;
         default:
@@ -227,6 +232,8 @@ struct SurfaceParams {
             return Tegra::Texture::TextureFormat::DXT45;
         case PixelFormat::DXN1:
             return Tegra::Texture::TextureFormat::DXN1;
+        case PixelFormat::BC7U:
+            return Tegra::Texture::TextureFormat::BC7U;
         case PixelFormat::ASTC_2D_4X4:
             return Tegra::Texture::TextureFormat::ASTC_2D_4X4;
         default:

src/video_core/textures/decoders.cpp

@@ -52,6 +52,7 @@ u32 BytesPerPixel(TextureFormat format) {
         return 8;
     case TextureFormat::DXT23:
     case TextureFormat::DXT45:
+    case TextureFormat::BC7U:
         // In this case a 'pixel' actually refers to a 4x4 tile.
         return 16;
     case TextureFormat::ASTC_2D_4X4:
@@ -98,6 +99,7 @@ std::vector<u8> UnswizzleTexture(VAddr address, TextureFormat format, u32 width,
     case TextureFormat::DXT23:
     case TextureFormat::DXT45:
     case TextureFormat::DXN1:
+    case TextureFormat::BC7U:
         // In the DXT and DXN formats, each 4x4 tile is swizzled instead of just individual pixel
         // values.
         CopySwizzledData(width / 4, height / 4, bytes_per_pixel, bytes_per_pixel, data,
@@ -155,6 +157,7 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
     case TextureFormat::DXT23:
     case TextureFormat::DXT45:
     case TextureFormat::DXN1:
+    case TextureFormat::BC7U:
     case TextureFormat::ASTC_2D_4X4:
     case TextureFormat::A8R8G8B8:
     case TextureFormat::A2B10G10R10: