diff options
| -rw-r--r-- | src/video_core/textures/decoders.cpp | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/src/video_core/textures/decoders.cpp b/src/video_core/textures/decoders.cpp index 58b65de1a..20ba6d4f6 100644 --- a/src/video_core/textures/decoders.cpp +++ b/src/video_core/textures/decoders.cpp @@ -46,6 +46,48 @@ void CopySwizzledData(u32 width, u32 height, u32 bytes_per_pixel, u32 out_bytes_ } } +template <std::size_t N, std::size_t M> +struct alignas(64) SwizzleTable { + constexpr SwizzleTable() { + for (u32 y = 0; y < N; ++y) { + for (u32 x = 0; x < M; ++x) { + const u32 x2 = x * 16; + values[y][x] = static_cast<u16>(((x2 % 64) / 32) * 256 + ((y % 8) / 2) * 64 + + ((x2 % 32) / 16) * 32 + (y % 2) * 16); + } + } + } + const std::array<u16, M>& operator[](std::size_t index) const { + return values[index]; + } + std::array<std::array<u16, M>, N> values{}; +}; + +constexpr auto swizzle_table = SwizzleTable<8, 4>(); + +void FastSwizzleData(u32 width, u32 height, u32 bytes_per_pixel, u8* swizzled_data, + u8* unswizzled_data, bool unswizzle, u32 block_height) { + std::array<u8*, 2> data_ptrs; + const std::size_t stride{width * bytes_per_pixel}; + const std::size_t image_width_in_gobs{(stride + 63) / 64}; + const std::size_t copy_size{16}; + for (std::size_t y = 0; y < height; ++y) { + const std::size_t initial_gob = + (y / (8 * block_height)) * 512 * block_height * image_width_in_gobs + + (y % (8 * block_height) / 8) * 512; + const std::size_t pixel_base{y * width * bytes_per_pixel}; + const auto& table = swizzle_table[y % 8]; + for (std::size_t xb = 0; xb < stride; xb += copy_size) { + const std::size_t gob_address{initial_gob + (xb / 64) * 512 * block_height}; + const std::size_t swizzle_offset{gob_address + table[(xb / 16) % 4]}; + const std::size_t pixel_index{xb + pixel_base}; + data_ptrs[unswizzle] = swizzled_data + swizzle_offset; + data_ptrs[!unswizzle] = unswizzled_data + pixel_index; + std::memcpy(data_ptrs[0], data_ptrs[1], copy_size); + } + } +} + u32 BytesPerPixel(TextureFormat format) { switch (format) { case TextureFormat::DXT1: @@ -92,8 +134,13 @@ u32 BytesPerPixel(TextureFormat format) { std::vector<u8> UnswizzleTexture(VAddr address, u32 tile_size, u32 bytes_per_pixel, u32 width, u32 height, u32 block_height) { std::vector<u8> unswizzled_data(width * height * bytes_per_pixel); - CopySwizzledData(width / tile_size, height / tile_size, bytes_per_pixel, bytes_per_pixel, - Memory::GetPointer(address), unswizzled_data.data(), true, block_height); + if (bytes_per_pixel % 3 != 0 && (width * bytes_per_pixel) % 16 == 0) { + FastSwizzleData(width / tile_size, height / tile_size, bytes_per_pixel, + Memory::GetPointer(address), unswizzled_data.data(), true, block_height); + } else { + CopySwizzledData(width / tile_size, height / tile_size, bytes_per_pixel, bytes_per_pixel, + Memory::GetPointer(address), unswizzled_data.data(), true, block_height); + } return unswizzled_data; } |