diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/texture_gradient.cpp')
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/texture_gradient.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/texture_gradient.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/texture_gradient.cpp new file mode 100644 index 000000000..00768e167 --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/texture_gradient.cpp @@ -0,0 +1,180 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <optional> + +#include "common/bit_field.h" +#include "common/common_types.h" +#include "shader_recompiler/frontend/ir/modifiers.h" +#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h" + +namespace Shader::Maxwell { +namespace { + +enum class TextureType : u64 { + _1D, + ARRAY_1D, + _2D, + ARRAY_2D, + _3D, + ARRAY_3D, + CUBE, + ARRAY_CUBE, +}; + +Shader::TextureType GetType(TextureType type, bool dc) { + switch (type) { + case TextureType::_1D: + return dc ? Shader::TextureType::Shadow1D : Shader::TextureType::Color1D; + case TextureType::ARRAY_1D: + return dc ? Shader::TextureType::ShadowArray1D : Shader::TextureType::ColorArray1D; + case TextureType::_2D: + return dc ? Shader::TextureType::Shadow2D : Shader::TextureType::Color2D; + case TextureType::ARRAY_2D: + return dc ? Shader::TextureType::ShadowArray2D : Shader::TextureType::ColorArray2D; + case TextureType::_3D: + return dc ? Shader::TextureType::Shadow3D : Shader::TextureType::Color3D; + case TextureType::ARRAY_3D: + throw NotImplementedException("3D array texture type"); + case TextureType::CUBE: + return dc ? Shader::TextureType::ShadowCube : Shader::TextureType::ColorCube; + case TextureType::ARRAY_CUBE: + return dc ? Shader::TextureType::ShadowArrayCube : Shader::TextureType::ColorArrayCube; + } + throw NotImplementedException("Invalid texture type {}", type); +} + +IR::Value MakeOffset(TranslatorVisitor& v, IR::Reg reg, bool has_lod_clamp) { + const IR::U32 value{v.X(reg)}; + const u32 base = has_lod_clamp ? 12 : 16; + return v.ir.CompositeConstruct( + v.ir.BitFieldExtract(value, v.ir.Imm32(base), v.ir.Imm32(4), true), + v.ir.BitFieldExtract(value, v.ir.Imm32(base + 4), v.ir.Imm32(4), true)); +} + +void Impl(TranslatorVisitor& v, u64 insn, bool is_bindless) { + union { + u64 raw; + BitField<49, 1, u64> nodep; + BitField<35, 1, u64> aoffi; + BitField<50, 1, u64> lc; + BitField<51, 3, IR::Pred> sparse_pred; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> coord_reg; + BitField<20, 8, IR::Reg> derivate_reg; + BitField<28, 3, TextureType> type; + BitField<31, 4, u64> mask; + BitField<36, 13, u64> cbuf_offset; + } const txd{insn}; + + const bool has_lod_clamp = txd.lc != 0; + if (has_lod_clamp) { + throw NotImplementedException("TXD.LC - CLAMP is not implemented"); + } + + IR::Value coords; + u32 num_derivates; + IR::Reg base_reg = txd.coord_reg; + IR::Reg last_reg; + IR::Value handle; + if (!is_bindless) { + handle = v.ir.Imm32(static_cast<u32>(txd.cbuf_offset.Value() * 4)); + } else { + handle = v.X(base_reg++); + } + + const auto read_array{[&]() -> IR::F32 { + return v.ir.ConvertUToF(32, 16, + v.ir.BitFieldExtract(v.X(last_reg), v.ir.Imm32(0), + v.ir.Imm32(has_lod_clamp ? 12 : 16))); + }}; + switch (txd.type) { + case TextureType::_1D: { + coords = v.F(base_reg); + num_derivates = 1; + last_reg = base_reg + 1; + break; + } + case TextureType::ARRAY_1D: { + last_reg = base_reg + 1; + coords = v.ir.CompositeConstruct(v.F(base_reg), read_array()); + num_derivates = 1; + break; + } + case TextureType::_2D: { + last_reg = base_reg + 2; + coords = v.ir.CompositeConstruct(v.F(base_reg), v.F(base_reg + 1)); + num_derivates = 2; + break; + } + case TextureType::ARRAY_2D: { + last_reg = base_reg + 2; + coords = v.ir.CompositeConstruct(v.F(base_reg), v.F(base_reg + 1), read_array()); + num_derivates = 2; + break; + } + default: + throw NotImplementedException("Invalid texture type"); + } + + const IR::Reg derivate_reg{txd.derivate_reg}; + IR::Value derivates; + switch (num_derivates) { + case 1: { + derivates = v.ir.CompositeConstruct(v.F(derivate_reg), v.F(derivate_reg + 1)); + break; + } + case 2: { + derivates = v.ir.CompositeConstruct(v.F(derivate_reg), v.F(derivate_reg + 1), + v.F(derivate_reg + 2), v.F(derivate_reg + 3)); + break; + } + default: + throw NotImplementedException("Invalid texture type"); + } + + IR::Value offset; + if (txd.aoffi != 0) { + offset = MakeOffset(v, last_reg, has_lod_clamp); + } + + IR::F32 lod_clamp; + if (has_lod_clamp) { + const IR::F32 conv4_8fixp_f = v.ir.Imm32(Common::BitCast<f32>(0x3b800000U)); + const IR::F32 tmp = v.ir.ConvertUToF( + 32, 16, v.ir.BitFieldExtract(v.X(last_reg), v.ir.Imm32(20), v.ir.Imm32(12))); + lod_clamp = v.ir.FPMul(tmp, conv4_8fixp_f); + } + + IR::TextureInstInfo info{}; + info.type.Assign(GetType(txd.type, false)); + info.num_derivates.Assign(num_derivates); + info.has_lod_clamp.Assign(has_lod_clamp ? 1 : 0); + const IR::Value sample{[&]() -> IR::Value { + return v.ir.ImageGradient(handle, coords, derivates, offset, lod_clamp, info); + }()}; + + IR::Reg dest_reg{txd.dest_reg}; + for (size_t element = 0; element < 4; ++element) { + if (((txd.mask >> element) & 1) == 0) { + continue; + } + v.F(dest_reg, IR::F32{v.ir.CompositeExtract(sample, element)}); + ++dest_reg; + } + if (txd.sparse_pred != IR::Pred::PT) { + v.ir.SetPred(txd.sparse_pred, v.ir.LogicalNot(v.ir.GetSparseFromOp(sample))); + } +} +} // Anonymous namespace + +void TranslatorVisitor::TXD(u64 insn) { + Impl(*this, insn, false); +} + +void TranslatorVisitor::TXD_b(u64 insn) { + Impl(*this, insn, true); +} + +} // namespace Shader::Maxwell |