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-rw-r--r--src/shader_recompiler/frontend/maxwell/translate/impl/texture_load.cpp165
1 files changed, 165 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/texture_load.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/texture_load.cpp
new file mode 100644
index 000000000..983058303
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/texture_load.cpp
@@ -0,0 +1,165 @@
+// 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) {
+ switch (type) {
+ case TextureType::_1D:
+ return Shader::TextureType::Color1D;
+ case TextureType::ARRAY_1D:
+ return Shader::TextureType::ColorArray1D;
+ case TextureType::_2D:
+ return Shader::TextureType::Color2D;
+ case TextureType::ARRAY_2D:
+ return Shader::TextureType::ColorArray2D;
+ case TextureType::_3D:
+ return Shader::TextureType::Color3D;
+ case TextureType::ARRAY_3D:
+ throw NotImplementedException("3D array texture type");
+ case TextureType::CUBE:
+ return Shader::TextureType::ColorCube;
+ case TextureType::ARRAY_CUBE:
+ return Shader::TextureType::ColorArrayCube;
+ }
+ throw NotImplementedException("Invalid texture type {}", type);
+}
+
+IR::Value MakeCoords(TranslatorVisitor& v, IR::Reg reg, TextureType type) {
+ const auto read_array{
+ [&]() -> IR::U32 { return v.ir.BitFieldExtract(v.X(reg), v.ir.Imm32(0), v.ir.Imm32(16)); }};
+ switch (type) {
+ case TextureType::_1D:
+ return v.X(reg);
+ case TextureType::ARRAY_1D:
+ return v.ir.CompositeConstruct(v.X(reg + 1), read_array());
+ case TextureType::_2D:
+ return v.ir.CompositeConstruct(v.X(reg), v.X(reg + 1));
+ case TextureType::ARRAY_2D:
+ return v.ir.CompositeConstruct(v.X(reg + 1), v.X(reg + 2), read_array());
+ case TextureType::_3D:
+ return v.ir.CompositeConstruct(v.X(reg), v.X(reg + 1), v.X(reg + 2));
+ case TextureType::ARRAY_3D:
+ throw NotImplementedException("3D array texture type");
+ case TextureType::CUBE:
+ return v.ir.CompositeConstruct(v.X(reg), v.X(reg + 1), v.X(reg + 2));
+ case TextureType::ARRAY_CUBE:
+ return v.ir.CompositeConstruct(v.X(reg + 1), v.X(reg + 2), v.X(reg + 3), read_array());
+ }
+ throw NotImplementedException("Invalid texture type {}", type);
+}
+
+IR::Value MakeOffset(TranslatorVisitor& v, IR::Reg& reg, TextureType type) {
+ const IR::U32 value{v.X(reg++)};
+ switch (type) {
+ case TextureType::_1D:
+ case TextureType::ARRAY_1D:
+ return v.ir.BitFieldExtract(value, v.ir.Imm32(0), v.ir.Imm32(4), true);
+ case TextureType::_2D:
+ case TextureType::ARRAY_2D:
+ return v.ir.CompositeConstruct(
+ v.ir.BitFieldExtract(value, v.ir.Imm32(0), v.ir.Imm32(4), true),
+ v.ir.BitFieldExtract(value, v.ir.Imm32(4), v.ir.Imm32(4), true));
+ case TextureType::_3D:
+ case TextureType::ARRAY_3D:
+ return v.ir.CompositeConstruct(
+ v.ir.BitFieldExtract(value, v.ir.Imm32(0), v.ir.Imm32(4), true),
+ v.ir.BitFieldExtract(value, v.ir.Imm32(4), v.ir.Imm32(4), true),
+ v.ir.BitFieldExtract(value, v.ir.Imm32(8), v.ir.Imm32(4), true));
+ case TextureType::CUBE:
+ case TextureType::ARRAY_CUBE:
+ throw NotImplementedException("Illegal offset on CUBE sample");
+ }
+ throw NotImplementedException("Invalid texture type {}", type);
+}
+
+void Impl(TranslatorVisitor& v, u64 insn, bool is_bindless) {
+ union {
+ u64 raw;
+ BitField<49, 1, u64> nodep;
+ BitField<55, 1, u64> lod;
+ BitField<50, 1, u64> multisample;
+ BitField<35, 1, u64> aoffi;
+ BitField<54, 1, u64> clamp;
+ 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> meta_reg;
+ BitField<28, 3, TextureType> type;
+ BitField<31, 4, u64> mask;
+ BitField<36, 13, u64> cbuf_offset;
+ } const tld{insn};
+
+ const IR::Value coords{MakeCoords(v, tld.coord_reg, tld.type)};
+
+ IR::Reg meta_reg{tld.meta_reg};
+ IR::Value handle;
+ IR::Value offset;
+ IR::U32 lod;
+ IR::U32 multisample;
+ if (is_bindless) {
+ handle = v.X(meta_reg++);
+ } else {
+ handle = v.ir.Imm32(static_cast<u32>(tld.cbuf_offset.Value() * 4));
+ }
+ if (tld.lod != 0) {
+ lod = v.X(meta_reg++);
+ } else {
+ lod = v.ir.Imm32(0U);
+ }
+ if (tld.aoffi != 0) {
+ offset = MakeOffset(v, meta_reg, tld.type);
+ }
+ if (tld.multisample != 0) {
+ multisample = v.X(meta_reg++);
+ }
+ if (tld.clamp != 0) {
+ throw NotImplementedException("TLD.CL - CLAMP is not implmented");
+ }
+ IR::TextureInstInfo info{};
+ info.type.Assign(GetType(tld.type));
+ const IR::Value sample{v.ir.ImageFetch(handle, coords, offset, lod, multisample, info)};
+
+ IR::Reg dest_reg{tld.dest_reg};
+ for (size_t element = 0; element < 4; ++element) {
+ if (((tld.mask >> element) & 1) == 0) {
+ continue;
+ }
+ v.F(dest_reg, IR::F32{v.ir.CompositeExtract(sample, element)});
+ ++dest_reg;
+ }
+ if (tld.sparse_pred != IR::Pred::PT) {
+ v.ir.SetPred(tld.sparse_pred, v.ir.LogicalNot(v.ir.GetSparseFromOp(sample)));
+ }
+}
+} // Anonymous namespace
+
+void TranslatorVisitor::TLD(u64 insn) {
+ Impl(*this, insn, false);
+}
+
+void TranslatorVisitor::TLD_b(u64 insn) {
+ Impl(*this, insn, true);
+}
+
+} // namespace Shader::Maxwell