summaryrefslogtreecommitdiffstats
path: root/src/video_core/swrasterizer/texturing.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/video_core/swrasterizer/texturing.cpp244
1 files changed, 0 insertions, 244 deletions
diff --git a/src/video_core/swrasterizer/texturing.cpp b/src/video_core/swrasterizer/texturing.cpp
deleted file mode 100644
index 79b1ce841..000000000
--- a/src/video_core/swrasterizer/texturing.cpp
+++ /dev/null
@@ -1,244 +0,0 @@
-// Copyright 2017 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <algorithm>
-
-#include "common/assert.h"
-#include "common/common_types.h"
-#include "common/math_util.h"
-#include "common/vector_math.h"
-#include "video_core/regs_texturing.h"
-#include "video_core/swrasterizer/texturing.h"
-
-namespace Pica {
-namespace Rasterizer {
-
-using TevStageConfig = TexturingRegs::TevStageConfig;
-
-int GetWrappedTexCoord(TexturingRegs::TextureConfig::WrapMode mode, int val, unsigned size) {
- switch (mode) {
- case TexturingRegs::TextureConfig::ClampToEdge2:
- // For negative coordinate, ClampToEdge2 behaves the same as Repeat
- if (val < 0) {
- return static_cast<int>(static_cast<unsigned>(val) % size);
- }
- // [[fallthrough]]
- case TexturingRegs::TextureConfig::ClampToEdge:
- val = std::max(val, 0);
- val = std::min(val, static_cast<int>(size) - 1);
- return val;
-
- case TexturingRegs::TextureConfig::ClampToBorder:
- return val;
-
- case TexturingRegs::TextureConfig::ClampToBorder2:
- // For ClampToBorder2, the case of positive coordinate beyond the texture size is already
- // handled outside. Here we only handle the negative coordinate in the same way as Repeat.
- case TexturingRegs::TextureConfig::Repeat2:
- case TexturingRegs::TextureConfig::Repeat3:
- case TexturingRegs::TextureConfig::Repeat:
- return static_cast<int>(static_cast<unsigned>(val) % size);
-
- case TexturingRegs::TextureConfig::MirroredRepeat: {
- unsigned int coord = (static_cast<unsigned>(val) % (2 * size));
- if (coord >= size)
- coord = 2 * size - 1 - coord;
- return static_cast<int>(coord);
- }
-
- default:
- LOG_ERROR(HW_GPU, "Unknown texture coordinate wrapping mode %x", (int)mode);
- UNIMPLEMENTED();
- return 0;
- }
-};
-
-Math::Vec3<u8> GetColorModifier(TevStageConfig::ColorModifier factor,
- const Math::Vec4<u8>& values) {
- using ColorModifier = TevStageConfig::ColorModifier;
-
- switch (factor) {
- case ColorModifier::SourceColor:
- return values.rgb();
-
- case ColorModifier::OneMinusSourceColor:
- return (Math::Vec3<u8>(255, 255, 255) - values.rgb()).Cast<u8>();
-
- case ColorModifier::SourceAlpha:
- return values.aaa();
-
- case ColorModifier::OneMinusSourceAlpha:
- return (Math::Vec3<u8>(255, 255, 255) - values.aaa()).Cast<u8>();
-
- case ColorModifier::SourceRed:
- return values.rrr();
-
- case ColorModifier::OneMinusSourceRed:
- return (Math::Vec3<u8>(255, 255, 255) - values.rrr()).Cast<u8>();
-
- case ColorModifier::SourceGreen:
- return values.ggg();
-
- case ColorModifier::OneMinusSourceGreen:
- return (Math::Vec3<u8>(255, 255, 255) - values.ggg()).Cast<u8>();
-
- case ColorModifier::SourceBlue:
- return values.bbb();
-
- case ColorModifier::OneMinusSourceBlue:
- return (Math::Vec3<u8>(255, 255, 255) - values.bbb()).Cast<u8>();
- }
-
- UNREACHABLE();
-};
-
-u8 GetAlphaModifier(TevStageConfig::AlphaModifier factor, const Math::Vec4<u8>& values) {
- using AlphaModifier = TevStageConfig::AlphaModifier;
-
- switch (factor) {
- case AlphaModifier::SourceAlpha:
- return values.a();
-
- case AlphaModifier::OneMinusSourceAlpha:
- return 255 - values.a();
-
- case AlphaModifier::SourceRed:
- return values.r();
-
- case AlphaModifier::OneMinusSourceRed:
- return 255 - values.r();
-
- case AlphaModifier::SourceGreen:
- return values.g();
-
- case AlphaModifier::OneMinusSourceGreen:
- return 255 - values.g();
-
- case AlphaModifier::SourceBlue:
- return values.b();
-
- case AlphaModifier::OneMinusSourceBlue:
- return 255 - values.b();
- }
-
- UNREACHABLE();
-};
-
-Math::Vec3<u8> ColorCombine(TevStageConfig::Operation op, const Math::Vec3<u8> input[3]) {
- using Operation = TevStageConfig::Operation;
-
- switch (op) {
- case Operation::Replace:
- return input[0];
-
- case Operation::Modulate:
- return ((input[0] * input[1]) / 255).Cast<u8>();
-
- case Operation::Add: {
- auto result = input[0] + input[1];
- result.r() = std::min(255, result.r());
- result.g() = std::min(255, result.g());
- result.b() = std::min(255, result.b());
- return result.Cast<u8>();
- }
-
- case Operation::AddSigned: {
- // TODO(bunnei): Verify that the color conversion from (float) 0.5f to
- // (byte) 128 is correct
- auto result =
- input[0].Cast<int>() + input[1].Cast<int>() - Math::MakeVec<int>(128, 128, 128);
- result.r() = MathUtil::Clamp<int>(result.r(), 0, 255);
- result.g() = MathUtil::Clamp<int>(result.g(), 0, 255);
- result.b() = MathUtil::Clamp<int>(result.b(), 0, 255);
- return result.Cast<u8>();
- }
-
- case Operation::Lerp:
- return ((input[0] * input[2] +
- input[1] * (Math::MakeVec<u8>(255, 255, 255) - input[2]).Cast<u8>()) /
- 255)
- .Cast<u8>();
-
- case Operation::Subtract: {
- auto result = input[0].Cast<int>() - input[1].Cast<int>();
- result.r() = std::max(0, result.r());
- result.g() = std::max(0, result.g());
- result.b() = std::max(0, result.b());
- return result.Cast<u8>();
- }
-
- case Operation::MultiplyThenAdd: {
- auto result = (input[0] * input[1] + 255 * input[2].Cast<int>()) / 255;
- result.r() = std::min(255, result.r());
- result.g() = std::min(255, result.g());
- result.b() = std::min(255, result.b());
- return result.Cast<u8>();
- }
-
- case Operation::AddThenMultiply: {
- auto result = input[0] + input[1];
- result.r() = std::min(255, result.r());
- result.g() = std::min(255, result.g());
- result.b() = std::min(255, result.b());
- result = (result * input[2].Cast<int>()) / 255;
- return result.Cast<u8>();
- }
- case Operation::Dot3_RGB:
- case Operation::Dot3_RGBA: {
- // Not fully accurate. Worst case scenario seems to yield a +/-3 error. Some HW results
- // indicate that the per-component computation can't have a higher precision than 1/256,
- // while dot3_rgb((0x80,g0,b0), (0x7F,g1,b1)) and dot3_rgb((0x80,g0,b0), (0x80,g1,b1)) give
- // different results.
- int result = ((input[0].r() * 2 - 255) * (input[1].r() * 2 - 255) + 128) / 256 +
- ((input[0].g() * 2 - 255) * (input[1].g() * 2 - 255) + 128) / 256 +
- ((input[0].b() * 2 - 255) * (input[1].b() * 2 - 255) + 128) / 256;
- result = std::max(0, std::min(255, result));
- return {(u8)result, (u8)result, (u8)result};
- }
- default:
- LOG_ERROR(HW_GPU, "Unknown color combiner operation %d", (int)op);
- UNIMPLEMENTED();
- return {0, 0, 0};
- }
-};
-
-u8 AlphaCombine(TevStageConfig::Operation op, const std::array<u8, 3>& input) {
- switch (op) {
- using Operation = TevStageConfig::Operation;
- case Operation::Replace:
- return input[0];
-
- case Operation::Modulate:
- return input[0] * input[1] / 255;
-
- case Operation::Add:
- return std::min(255, input[0] + input[1]);
-
- case Operation::AddSigned: {
- // TODO(bunnei): Verify that the color conversion from (float) 0.5f to (byte) 128 is correct
- auto result = static_cast<int>(input[0]) + static_cast<int>(input[1]) - 128;
- return static_cast<u8>(MathUtil::Clamp<int>(result, 0, 255));
- }
-
- case Operation::Lerp:
- return (input[0] * input[2] + input[1] * (255 - input[2])) / 255;
-
- case Operation::Subtract:
- return std::max(0, (int)input[0] - (int)input[1]);
-
- case Operation::MultiplyThenAdd:
- return std::min(255, (input[0] * input[1] + 255 * input[2]) / 255);
-
- case Operation::AddThenMultiply:
- return (std::min(255, (input[0] + input[1])) * input[2]) / 255;
-
- default:
- LOG_ERROR(HW_GPU, "Unknown alpha combiner operation %d", (int)op);
- UNIMPLEMENTED();
- return 0;
- }
-};
-
-} // namespace Rasterizer
-} // namespace Pica