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decoders: Introduce functions for un/swizzling subrects.
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@ -237,6 +237,46 @@ std::vector<u8> UnswizzleTexture(VAddr address, u32 tile_size, u32 bytes_per_pix
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return unswizzled_data;
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}
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void SwizzleSubrect(u32 subrect_width, u32 subrect_height, u32 source_pitch, u32 swizzled_width,
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u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
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u32 block_height) {
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const u32 image_width_in_gobs{(swizzled_width * bytes_per_pixel + 63) / 64};
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for (u32 line = 0; line < subrect_height; ++line) {
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const u32 gob_address_y =
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(line / (8 * block_height)) * 512 * block_height * image_width_in_gobs +
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(line % (8 * block_height) / 8) * 512;
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const auto& table = legacy_swizzle_table[line % 8];
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for (u32 x = 0; x < subrect_width; ++x) {
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const u32 gob_address = gob_address_y + (x * bytes_per_pixel / 64) * 512 * block_height;
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const u32 swizzled_offset = gob_address + table[(x * bytes_per_pixel) % 64];
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const VAddr source_line = unswizzled_data + line * source_pitch + x * bytes_per_pixel;
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const VAddr dest_addr = swizzled_data + swizzled_offset;
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Memory::CopyBlock(dest_addr, source_line, bytes_per_pixel);
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}
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}
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}
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void UnswizzleSubrect(u32 subrect_width, u32 subrect_height, u32 dest_pitch, u32 swizzled_width,
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u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
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u32 block_height, u32 offset_x, u32 offset_y) {
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for (u32 line = 0; line < subrect_height; ++line) {
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const u32 y2 = line + offset_y;
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const u32 gob_address_y =
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(y2 / (8 * block_height)) * 512 * block_height + (y2 % (8 * block_height) / 8) * 512;
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const auto& table = legacy_swizzle_table[y2 % 8];
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for (u32 x = 0; x < subrect_width; ++x) {
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const u32 x2 = (x + offset_x) * bytes_per_pixel;
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const u32 gob_address = gob_address_y + (x2 / 64) * 512 * block_height;
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const u32 swizzled_offset = gob_address + table[x2 % 64];
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const VAddr dest_line = unswizzled_data + line * dest_pitch + x * bytes_per_pixel;
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const VAddr source_addr = swizzled_data + swizzled_offset;
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Memory::CopyBlock(dest_line, source_addr, bytes_per_pixel);
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}
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}
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}
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std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat format, u32 width,
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u32 height) {
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std::vector<u8> rgba_data;
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@ -35,4 +35,13 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
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std::size_t CalculateSize(bool tiled, u32 bytes_per_pixel, u32 width, u32 height, u32 depth,
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u32 block_height, u32 block_depth);
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/// Copies an untiled subrectangle into a tiled surface.
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void SwizzleSubrect(u32 subrect_width, u32 subrect_height, u32 source_pitch, u32 swizzled_width,
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u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
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u32 block_height);
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/// Copies a tiled subrectangle into a linear surface.
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void UnswizzleSubrect(u32 subrect_width, u32 subrect_height, u32 dest_pitch, u32 swizzled_width,
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u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
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u32 block_height, u32 offset_x, u32 offset_y);
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} // namespace Tegra::Texture
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