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authorJames Rowe <jroweboy@gmail.com>2018-01-12 04:07:44 +0100
committerJames Rowe <jroweboy@gmail.com>2018-01-13 03:11:03 +0100
commit1d28b2e142f845773e2b90e267d9632e196a99b9 (patch)
tree027a3586a0fc927731afb3711c328c6dafc8551f /src/video_core/texture/texture_decode.cpp
parentMassive removal of unused modules (diff)
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Diffstat (limited to 'src/video_core/texture/texture_decode.cpp')
-rw-r--r--src/video_core/texture/texture_decode.cpp227
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