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Diffstat (limited to 'src/video_core/swrasterizer/texturing.cpp')
-rw-r--r-- | src/video_core/swrasterizer/texturing.cpp | 244 |
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 |