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Diffstat (limited to 'src/video_core/textures/convert.cpp')
-rw-r--r-- | src/video_core/textures/convert.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/video_core/textures/convert.cpp b/src/video_core/textures/convert.cpp new file mode 100644 index 000000000..5e439f036 --- /dev/null +++ b/src/video_core/textures/convert.cpp @@ -0,0 +1,92 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <algorithm> +#include <cstring> +#include <tuple> +#include <vector> + +#include "common/assert.h" +#include "common/common_types.h" +#include "common/logging/log.h" +#include "video_core/textures/astc.h" +#include "video_core/textures/convert.h" + +namespace Tegra::Texture { + +using VideoCore::Surface::PixelFormat; + +template <bool reverse> +void SwapS8Z24ToZ24S8(u8* data, u32 width, u32 height) { + union S8Z24 { + BitField<0, 24, u32> z24; + BitField<24, 8, u32> s8; + }; + static_assert(sizeof(S8Z24) == 4, "S8Z24 is incorrect size"); + + union Z24S8 { + BitField<0, 8, u32> s8; + BitField<8, 24, u32> z24; + }; + static_assert(sizeof(Z24S8) == 4, "Z24S8 is incorrect size"); + + S8Z24 s8z24_pixel{}; + Z24S8 z24s8_pixel{}; + constexpr auto bpp{ + VideoCore::Surface::GetBytesPerPixel(VideoCore::Surface::PixelFormat::S8Z24)}; + for (std::size_t y = 0; y < height; ++y) { + for (std::size_t x = 0; x < width; ++x) { + const std::size_t offset{bpp * (y * width + x)}; + if constexpr (reverse) { + std::memcpy(&z24s8_pixel, &data[offset], sizeof(Z24S8)); + s8z24_pixel.s8.Assign(z24s8_pixel.s8); + s8z24_pixel.z24.Assign(z24s8_pixel.z24); + std::memcpy(&data[offset], &s8z24_pixel, sizeof(S8Z24)); + } else { + std::memcpy(&s8z24_pixel, &data[offset], sizeof(S8Z24)); + z24s8_pixel.s8.Assign(s8z24_pixel.s8); + z24s8_pixel.z24.Assign(s8z24_pixel.z24); + std::memcpy(&data[offset], &z24s8_pixel, sizeof(Z24S8)); + } + } + } +} + +static void ConvertS8Z24ToZ24S8(u8* data, u32 width, u32 height) { + SwapS8Z24ToZ24S8<false>(data, width, height); +} + +static void ConvertZ24S8ToS8Z24(u8* data, u32 width, u32 height) { + SwapS8Z24ToZ24S8<true>(data, width, height); +} + +void ConvertFromGuestToHost(u8* data, PixelFormat pixel_format, u32 width, u32 height, u32 depth, + bool convert_astc, bool convert_s8z24) { + if (convert_astc && IsPixelFormatASTC(pixel_format)) { + // Convert ASTC pixel formats to RGBA8, as most desktop GPUs do not support ASTC. + u32 block_width{}; + u32 block_height{}; + std::tie(block_width, block_height) = GetASTCBlockSize(pixel_format); + const std::vector<u8> rgba8_data = + Tegra::Texture::ASTC::Decompress(data, width, height, depth, block_width, block_height); + std::copy(rgba8_data.begin(), rgba8_data.end(), data); + + } else if (convert_s8z24 && pixel_format == PixelFormat::S8Z24) { + Tegra::Texture::ConvertS8Z24ToZ24S8(data, width, height); + } +} + +void ConvertFromHostToGuest(u8* data, PixelFormat pixel_format, u32 width, u32 height, u32 depth, + bool convert_astc, bool convert_s8z24) { + if (convert_astc && IsPixelFormatASTC(pixel_format)) { + LOG_CRITICAL(HW_GPU, "Conversion of format {} after texture flushing is not implemented", + static_cast<u32>(pixel_format)); + UNREACHABLE(); + + } else if (convert_s8z24 && pixel_format == PixelFormat::S8Z24) { + Tegra::Texture::ConvertZ24S8ToS8Z24(data, width, height); + } +} + +} // namespace Tegra::Texture
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