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authorbunnei <bunneidev@gmail.com>2018-09-17 18:39:34 +0200
committerGitHub <noreply@github.com>2018-09-17 18:39:34 +0200
commita94b623dfb6f151dfa9c0a62ad30368a9c8058c2 (patch)
tree10fc0947a280e8c03b86033a524e85f9b8e36fe5 /src/video_core/textures
parentMerge pull request #1312 from lioncash/fwd (diff)
parentOptimized Texture Swizzling (diff)
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Diffstat (limited to 'src/video_core/textures')
-rw-r--r--src/video_core/textures/decoders.cpp51
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;
}