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author | James Rowe <jroweboy@gmail.com> | 2018-01-12 04:07:44 +0100 |
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committer | James Rowe <jroweboy@gmail.com> | 2018-01-13 03:11:03 +0100 |
commit | 1d28b2e142f845773e2b90e267d9632e196a99b9 (patch) | |
tree | 027a3586a0fc927731afb3711c328c6dafc8551f /src/video_core/texture/texture_decode.cpp | |
parent | Massive removal of unused modules (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/video_core/texture/texture_decode.cpp | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/src/video_core/texture/texture_decode.cpp b/src/video_core/texture/texture_decode.cpp deleted file mode 100644 index 0818d652c..000000000 --- a/src/video_core/texture/texture_decode.cpp +++ /dev/null @@ -1,227 +0,0 @@ -// Copyright 2017 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include "common/assert.h" -#include "common/color.h" -#include "common/logging/log.h" -#include "common/math_util.h" -#include "common/swap.h" -#include "common/vector_math.h" -#include "video_core/regs_texturing.h" -#include "video_core/texture/etc1.h" -#include "video_core/texture/texture_decode.h" -#include "video_core/utils.h" - -using TextureFormat = Pica::TexturingRegs::TextureFormat; - -namespace Pica { -namespace Texture { - -constexpr size_t TILE_SIZE = 8 * 8; -constexpr size_t ETC1_SUBTILES = 2 * 2; - -size_t CalculateTileSize(TextureFormat format) { - switch (format) { - case TextureFormat::RGBA8: - return 4 * TILE_SIZE; - - case TextureFormat::RGB8: - return 3 * TILE_SIZE; - - case TextureFormat::RGB5A1: - case TextureFormat::RGB565: - case TextureFormat::RGBA4: - case TextureFormat::IA8: - case TextureFormat::RG8: - return 2 * TILE_SIZE; - - case TextureFormat::I8: - case TextureFormat::A8: - case TextureFormat::IA4: - return 1 * TILE_SIZE; - - case TextureFormat::I4: - case TextureFormat::A4: - return TILE_SIZE / 2; - - case TextureFormat::ETC1: - return ETC1_SUBTILES * 8; - - case TextureFormat::ETC1A4: - return ETC1_SUBTILES * 16; - - default: // placeholder for yet unknown formats - UNIMPLEMENTED(); - return 0; - } -} - -Math::Vec4<u8> LookupTexture(const u8* source, unsigned int x, unsigned int y, - const TextureInfo& info, bool disable_alpha) { - // Coordinate in tiles - const unsigned int coarse_x = x / 8; - const unsigned int coarse_y = y / 8; - - // Coordinate inside the tile - const unsigned int fine_x = x % 8; - const unsigned int fine_y = y % 8; - - const u8* line = source + coarse_y * info.stride; - const u8* tile = line + coarse_x * CalculateTileSize(info.format); - return LookupTexelInTile(tile, fine_x, fine_y, info, disable_alpha); -} - -Math::Vec4<u8> LookupTexelInTile(const u8* source, unsigned int x, unsigned int y, - const TextureInfo& info, bool disable_alpha) { - DEBUG_ASSERT(x < 8); - DEBUG_ASSERT(y < 8); - - using VideoCore::MortonInterleave; - - switch (info.format) { - case TextureFormat::RGBA8: { - auto res = Color::DecodeRGBA8(source + MortonInterleave(x, y) * 4); - return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())}; - } - - case TextureFormat::RGB8: { - auto res = Color::DecodeRGB8(source + MortonInterleave(x, y) * 3); - return {res.r(), res.g(), res.b(), 255}; - } - - case TextureFormat::RGB5A1: { - auto res = Color::DecodeRGB5A1(source + MortonInterleave(x, y) * 2); - return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())}; - } - - case TextureFormat::RGB565: { - auto res = Color::DecodeRGB565(source + MortonInterleave(x, y) * 2); - return {res.r(), res.g(), res.b(), 255}; - } - - case TextureFormat::RGBA4: { - auto res = Color::DecodeRGBA4(source + MortonInterleave(x, y) * 2); - return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())}; - } - - case TextureFormat::IA8: { - const u8* source_ptr = source + MortonInterleave(x, y) * 2; - - if (disable_alpha) { - // Show intensity as red, alpha as green - return {source_ptr[1], source_ptr[0], 0, 255}; - } else { - return {source_ptr[1], source_ptr[1], source_ptr[1], source_ptr[0]}; - } - } - - case TextureFormat::RG8: { - auto res = Color::DecodeRG8(source + MortonInterleave(x, y) * 2); - return {res.r(), res.g(), 0, 255}; - } - - case TextureFormat::I8: { - const u8* source_ptr = source + MortonInterleave(x, y); - return {*source_ptr, *source_ptr, *source_ptr, 255}; - } - - case TextureFormat::A8: { - const u8* source_ptr = source + MortonInterleave(x, y); - - if (disable_alpha) { - return {*source_ptr, *source_ptr, *source_ptr, 255}; - } else { - return {0, 0, 0, *source_ptr}; - } - } - - case TextureFormat::IA4: { - const u8* source_ptr = source + MortonInterleave(x, y); - - u8 i = Color::Convert4To8(((*source_ptr) & 0xF0) >> 4); - u8 a = Color::Convert4To8((*source_ptr) & 0xF); - - if (disable_alpha) { - // Show intensity as red, alpha as green - return {i, a, 0, 255}; - } else { - return {i, i, i, a}; - } - } - - case TextureFormat::I4: { - u32 morton_offset = MortonInterleave(x, y); - const u8* source_ptr = source + morton_offset / 2; - - u8 i = (morton_offset % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF); - i = Color::Convert4To8(i); - - return {i, i, i, 255}; - } - - case TextureFormat::A4: { - u32 morton_offset = MortonInterleave(x, y); - const u8* source_ptr = source + morton_offset / 2; - - u8 a = (morton_offset % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF); - a = Color::Convert4To8(a); - - if (disable_alpha) { - return {a, a, a, 255}; - } else { - return {0, 0, 0, a}; - } - } - - case TextureFormat::ETC1: - case TextureFormat::ETC1A4: { - bool has_alpha = (info.format == TextureFormat::ETC1A4); - size_t subtile_size = has_alpha ? 16 : 8; - - // ETC1 further subdivides each 8x8 tile into four 4x4 subtiles - constexpr unsigned int subtile_width = 4; - constexpr unsigned int subtile_height = 4; - - unsigned int subtile_index = (x / subtile_width) + 2 * (y / subtile_height); - x %= subtile_width; - y %= subtile_height; - - const u8* subtile_ptr = source + subtile_index * subtile_size; - - u8 alpha = 255; - if (has_alpha) { - u64_le packed_alpha; - memcpy(&packed_alpha, subtile_ptr, sizeof(u64)); - subtile_ptr += sizeof(u64); - - alpha = Color::Convert4To8((packed_alpha >> (4 * (x * subtile_width + y))) & 0xF); - } - - u64_le subtile_data; - memcpy(&subtile_data, subtile_ptr, sizeof(u64)); - - return Math::MakeVec(SampleETC1Subtile(subtile_data, x, y), - disable_alpha ? (u8)255 : alpha); - } - - default: - LOG_ERROR(HW_GPU, "Unknown texture format: %x", (u32)info.format); - DEBUG_ASSERT(false); - return {}; - } -} - -TextureInfo TextureInfo::FromPicaRegister(const TexturingRegs::TextureConfig& config, - const TexturingRegs::TextureFormat& format) { - TextureInfo info; - info.physical_address = config.GetPhysicalAddress(); - info.width = config.width; - info.height = config.height; - info.format = format; - info.SetDefaultStride(); - return info; -} - -} // namespace Texture -} // namespace Pica |