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Pica/DebugUtils: Add support for RGBA8, RGBA5551, RGBA4 and A8 texture formats.
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2 changed files with 48 additions and 3 deletions
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@ -357,7 +357,6 @@ std::unique_ptr<PicaTrace> FinishPicaTracing()
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}
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const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const TextureInfo& info) {
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_dbg_assert_(Debug_GPU, info.format == Pica::Regs::TextureFormat::RGB8);
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// Cf. rasterizer code for an explanation of this algorithm.
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int texel_index_within_tile = 0;
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@ -376,8 +375,52 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture
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int coarse_x = (x / block_width) * block_width;
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int coarse_y = (y / block_height) * block_height;
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const u8* source_ptr = source + coarse_x * block_height * 3 + coarse_y * info.stride + texel_index_within_tile * 3;
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return { source_ptr[2], source_ptr[1], source_ptr[0], 255 };
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switch (info.format) {
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case Regs::TextureFormat::RGBA8:
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{
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const u8* source_ptr = source + coarse_x * block_height * 4 + coarse_y * info.stride + texel_index_within_tile * 4;
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return { source_ptr[3], source_ptr[2], source_ptr[1], 255 };
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}
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case Regs::TextureFormat::RGB8:
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{
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const u8* source_ptr = source + coarse_x * block_height * 3 + coarse_y * info.stride + texel_index_within_tile * 3;
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return { source_ptr[2], source_ptr[1], source_ptr[0], 255 };
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}
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case Regs::TextureFormat::RGBA5551:
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{
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const u16 source_ptr = *(const u16*)(source + coarse_x * block_height * 2 + coarse_y * info.stride + texel_index_within_tile * 2);
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u8 r = (source_ptr >> 11) & 0x1F;
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u8 g = ((source_ptr) >> 6) & 0x1F;
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u8 b = (source_ptr >> 1) & 0x1F;
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u8 a = 1;
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return Math::MakeVec<u8>((r << 3) | (r >> 2), (g << 3) | (g >> 2), (b << 3) | (b >> 2), a * 255);
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}
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case Regs::TextureFormat::RGBA4:
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{
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const u8* source_ptr = source + coarse_x * block_height * 2 + coarse_y * info.stride + texel_index_within_tile * 2;
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u8 r = source_ptr[1] >> 4;
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u8 g = source_ptr[1] & 0xFF;
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u8 b = source_ptr[0] >> 4;
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r = (r << 4) | r;
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g = (g << 4) | g;
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b = (b << 4) | b;
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return { r, g, b, 255 };
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}
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case Regs::TextureFormat::A8:
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{
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const u8* source_ptr = source + coarse_x * block_height + coarse_y * info.stride + texel_index_within_tile;
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return { *source_ptr, *source_ptr, *source_ptr, 255 };
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}
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default:
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LOG_ERROR(HW_GPU, "Unknown texture format: %x", (u32)info.format);
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_dbg_assert_(HW_GPU, 0);
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return {};
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}
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}
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TextureInfo TextureInfo::FromPicaRegister(const Regs::TextureConfig& config,
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@ -132,6 +132,8 @@ struct Regs {
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RGB565 = 3,
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RGBA4 = 4,
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A8 = 8,
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// TODO: Support for the other formats is not implemented, yet.
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// Seems like they are luminance formats and compressed textures.
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};
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