4e35177e23
Implement VOTE using Nvidia's intrinsics. Documentation about these can be found here https://developer.nvidia.com/reading-between-threads-shader-intrinsics Instead of using portable ARB instructions I opted to use Nvidia intrinsics because these are the closest we have to how Tegra X1 hardware renders. To stub VOTE on non-Nvidia drivers (including nouveau) this commit simulates a GPU with a warp size of one, returning what is meaningful for the instruction being emulated: * anyThreadNV(value) -> value * allThreadsNV(value) -> value * allThreadsEqualNV(value) -> true ballotARB, also known as "uint64_t(activeThreadsNV())", emits VOTE.ANY Rd, PT, PT; on nouveau's compiler. This doesn't match exactly to Nvidia's code VOTE.ALL Rd, PT, PT; Which is emulated with activeThreadsNV() by this commit. In theory this shouldn't really matter since .ANY, .ALL and .EQ affect the predicates (set to PT on those cases) and not the registers.
578 lines
19 KiB
C++
578 lines
19 KiB
C++
// Copyright 2019 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <cstddef>
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#include <memory>
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#include <string>
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#include <tuple>
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#include <utility>
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#include <variant>
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#include <vector>
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#include "common/common_types.h"
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#include "video_core/engines/shader_bytecode.h"
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namespace VideoCommon::Shader {
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enum class OperationCode {
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Assign, /// (float& dest, float src) -> void
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Select, /// (MetaArithmetic, bool pred, float a, float b) -> float
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FAdd, /// (MetaArithmetic, float a, float b) -> float
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FMul, /// (MetaArithmetic, float a, float b) -> float
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FDiv, /// (MetaArithmetic, float a, float b) -> float
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FFma, /// (MetaArithmetic, float a, float b, float c) -> float
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FNegate, /// (MetaArithmetic, float a) -> float
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FAbsolute, /// (MetaArithmetic, float a) -> float
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FClamp, /// (MetaArithmetic, float value, float min, float max) -> float
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FCastHalf0, /// (MetaArithmetic, f16vec2 a) -> float
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FCastHalf1, /// (MetaArithmetic, f16vec2 a) -> float
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FMin, /// (MetaArithmetic, float a, float b) -> float
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FMax, /// (MetaArithmetic, float a, float b) -> float
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FCos, /// (MetaArithmetic, float a) -> float
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FSin, /// (MetaArithmetic, float a) -> float
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FExp2, /// (MetaArithmetic, float a) -> float
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FLog2, /// (MetaArithmetic, float a) -> float
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FInverseSqrt, /// (MetaArithmetic, float a) -> float
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FSqrt, /// (MetaArithmetic, float a) -> float
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FRoundEven, /// (MetaArithmetic, float a) -> float
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FFloor, /// (MetaArithmetic, float a) -> float
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FCeil, /// (MetaArithmetic, float a) -> float
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FTrunc, /// (MetaArithmetic, float a) -> float
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FCastInteger, /// (MetaArithmetic, int a) -> float
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FCastUInteger, /// (MetaArithmetic, uint a) -> float
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IAdd, /// (MetaArithmetic, int a, int b) -> int
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IMul, /// (MetaArithmetic, int a, int b) -> int
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IDiv, /// (MetaArithmetic, int a, int b) -> int
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INegate, /// (MetaArithmetic, int a) -> int
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IAbsolute, /// (MetaArithmetic, int a) -> int
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IMin, /// (MetaArithmetic, int a, int b) -> int
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IMax, /// (MetaArithmetic, int a, int b) -> int
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ICastFloat, /// (MetaArithmetic, float a) -> int
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ICastUnsigned, /// (MetaArithmetic, uint a) -> int
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ILogicalShiftLeft, /// (MetaArithmetic, int a, uint b) -> int
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ILogicalShiftRight, /// (MetaArithmetic, int a, uint b) -> int
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IArithmeticShiftRight, /// (MetaArithmetic, int a, uint b) -> int
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IBitwiseAnd, /// (MetaArithmetic, int a, int b) -> int
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IBitwiseOr, /// (MetaArithmetic, int a, int b) -> int
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IBitwiseXor, /// (MetaArithmetic, int a, int b) -> int
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IBitwiseNot, /// (MetaArithmetic, int a) -> int
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IBitfieldInsert, /// (MetaArithmetic, int base, int insert, int offset, int bits) -> int
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IBitfieldExtract, /// (MetaArithmetic, int value, int offset, int offset) -> int
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IBitCount, /// (MetaArithmetic, int) -> int
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UAdd, /// (MetaArithmetic, uint a, uint b) -> uint
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UMul, /// (MetaArithmetic, uint a, uint b) -> uint
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UDiv, /// (MetaArithmetic, uint a, uint b) -> uint
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UMin, /// (MetaArithmetic, uint a, uint b) -> uint
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UMax, /// (MetaArithmetic, uint a, uint b) -> uint
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UCastFloat, /// (MetaArithmetic, float a) -> uint
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UCastSigned, /// (MetaArithmetic, int a) -> uint
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ULogicalShiftLeft, /// (MetaArithmetic, uint a, uint b) -> uint
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ULogicalShiftRight, /// (MetaArithmetic, uint a, uint b) -> uint
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UArithmeticShiftRight, /// (MetaArithmetic, uint a, uint b) -> uint
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UBitwiseAnd, /// (MetaArithmetic, uint a, uint b) -> uint
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UBitwiseOr, /// (MetaArithmetic, uint a, uint b) -> uint
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UBitwiseXor, /// (MetaArithmetic, uint a, uint b) -> uint
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UBitwiseNot, /// (MetaArithmetic, uint a) -> uint
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UBitfieldInsert, /// (MetaArithmetic, uint base, uint insert, int offset, int bits) -> uint
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UBitfieldExtract, /// (MetaArithmetic, uint value, int offset, int offset) -> uint
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UBitCount, /// (MetaArithmetic, uint) -> uint
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HAdd, /// (MetaArithmetic, f16vec2 a, f16vec2 b) -> f16vec2
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HMul, /// (MetaArithmetic, f16vec2 a, f16vec2 b) -> f16vec2
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HFma, /// (MetaArithmetic, f16vec2 a, f16vec2 b, f16vec2 c) -> f16vec2
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HAbsolute, /// (f16vec2 a) -> f16vec2
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HNegate, /// (f16vec2 a, bool first, bool second) -> f16vec2
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HClamp, /// (f16vec2 src, float min, float max) -> f16vec2
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HCastFloat, /// (MetaArithmetic, float a) -> f16vec2
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HUnpack, /// (Tegra::Shader::HalfType, T value) -> f16vec2
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HMergeF32, /// (f16vec2 src) -> float
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HMergeH0, /// (f16vec2 dest, f16vec2 src) -> f16vec2
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HMergeH1, /// (f16vec2 dest, f16vec2 src) -> f16vec2
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HPack2, /// (float a, float b) -> f16vec2
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LogicalAssign, /// (bool& dst, bool src) -> void
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LogicalAnd, /// (bool a, bool b) -> bool
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LogicalOr, /// (bool a, bool b) -> bool
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LogicalXor, /// (bool a, bool b) -> bool
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LogicalNegate, /// (bool a) -> bool
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LogicalPick2, /// (bool2 pair, uint index) -> bool
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LogicalAnd2, /// (bool2 a) -> bool
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LogicalFLessThan, /// (float a, float b) -> bool
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LogicalFEqual, /// (float a, float b) -> bool
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LogicalFLessEqual, /// (float a, float b) -> bool
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LogicalFGreaterThan, /// (float a, float b) -> bool
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LogicalFNotEqual, /// (float a, float b) -> bool
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LogicalFGreaterEqual, /// (float a, float b) -> bool
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LogicalFIsNan, /// (float a) -> bool
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LogicalILessThan, /// (int a, int b) -> bool
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LogicalIEqual, /// (int a, int b) -> bool
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LogicalILessEqual, /// (int a, int b) -> bool
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LogicalIGreaterThan, /// (int a, int b) -> bool
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LogicalINotEqual, /// (int a, int b) -> bool
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LogicalIGreaterEqual, /// (int a, int b) -> bool
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LogicalULessThan, /// (uint a, uint b) -> bool
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LogicalUEqual, /// (uint a, uint b) -> bool
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LogicalULessEqual, /// (uint a, uint b) -> bool
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LogicalUGreaterThan, /// (uint a, uint b) -> bool
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LogicalUNotEqual, /// (uint a, uint b) -> bool
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LogicalUGreaterEqual, /// (uint a, uint b) -> bool
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Logical2HLessThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HNotEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessThanWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterThanWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HNotEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Texture, /// (MetaTexture, float[N] coords) -> float4
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TextureLod, /// (MetaTexture, float[N] coords) -> float4
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TextureGather, /// (MetaTexture, float[N] coords) -> float4
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TextureQueryDimensions, /// (MetaTexture, float a) -> float4
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TextureQueryLod, /// (MetaTexture, float[N] coords) -> float4
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TexelFetch, /// (MetaTexture, int[N], int) -> float4
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ImageStore, /// (MetaImage, float[N] coords) -> void
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Branch, /// (uint branch_target) -> void
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BranchIndirect, /// (uint branch_target) -> void
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PushFlowStack, /// (uint branch_target) -> void
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PopFlowStack, /// () -> void
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Exit, /// () -> void
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Discard, /// () -> void
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EmitVertex, /// () -> void
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EndPrimitive, /// () -> void
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YNegate, /// () -> float
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LocalInvocationIdX, /// () -> uint
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LocalInvocationIdY, /// () -> uint
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LocalInvocationIdZ, /// () -> uint
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WorkGroupIdX, /// () -> uint
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WorkGroupIdY, /// () -> uint
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WorkGroupIdZ, /// () -> uint
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BallotThread, /// (bool) -> uint
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VoteAll, /// (bool) -> bool
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VoteAny, /// (bool) -> bool
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VoteEqual, /// (bool) -> bool
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Amount,
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};
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enum class InternalFlag {
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Zero = 0,
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Sign = 1,
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Carry = 2,
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Overflow = 3,
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Amount = 4,
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};
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enum class MetaStackClass {
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Ssy,
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Pbk,
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};
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class OperationNode;
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class ConditionalNode;
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class GprNode;
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class ImmediateNode;
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class InternalFlagNode;
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class PredicateNode;
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class AbufNode;
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class CbufNode;
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class LmemNode;
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class GmemNode;
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class CommentNode;
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using NodeData =
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std::variant<OperationNode, ConditionalNode, GprNode, ImmediateNode, InternalFlagNode,
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PredicateNode, AbufNode, CbufNode, LmemNode, GmemNode, CommentNode>;
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using Node = std::shared_ptr<NodeData>;
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using Node4 = std::array<Node, 4>;
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using NodeBlock = std::vector<Node>;
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class Sampler {
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public:
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/// This constructor is for bound samplers
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explicit Sampler(std::size_t offset, std::size_t index, Tegra::Shader::TextureType type,
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bool is_array, bool is_shadow)
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: offset{offset}, index{index}, type{type}, is_array{is_array}, is_shadow{is_shadow},
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is_bindless{false} {}
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/// This constructor is for bindless samplers
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explicit Sampler(u32 cbuf_index, u32 cbuf_offset, std::size_t index,
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Tegra::Shader::TextureType type, bool is_array, bool is_shadow)
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: offset{(static_cast<u64>(cbuf_index) << 32) | cbuf_offset}, index{index}, type{type},
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is_array{is_array}, is_shadow{is_shadow}, is_bindless{true} {}
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/// This constructor is for serialization/deserialization
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explicit Sampler(std::size_t offset, std::size_t index, Tegra::Shader::TextureType type,
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bool is_array, bool is_shadow, bool is_bindless)
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: offset{offset}, index{index}, type{type}, is_array{is_array}, is_shadow{is_shadow},
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is_bindless{is_bindless} {}
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std::size_t GetOffset() const {
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return offset;
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}
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std::size_t GetIndex() const {
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return index;
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}
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Tegra::Shader::TextureType GetType() const {
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return type;
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}
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bool IsArray() const {
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return is_array;
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}
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bool IsShadow() const {
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return is_shadow;
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}
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bool IsBindless() const {
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return is_bindless;
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}
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std::pair<u32, u32> GetBindlessCBuf() const {
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return {static_cast<u32>(offset >> 32), static_cast<u32>(offset)};
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}
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bool operator<(const Sampler& rhs) const {
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return std::tie(index, offset, type, is_array, is_shadow, is_bindless) <
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std::tie(rhs.index, rhs.offset, rhs.type, rhs.is_array, rhs.is_shadow,
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rhs.is_bindless);
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}
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private:
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/// Offset in TSC memory from which to read the sampler object, as specified by the sampling
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/// instruction.
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std::size_t offset{};
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std::size_t index{}; ///< Value used to index into the generated GLSL sampler array.
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Tegra::Shader::TextureType type{}; ///< The type used to sample this texture (Texture2D, etc)
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bool is_array{}; ///< Whether the texture is being sampled as an array texture or not.
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bool is_shadow{}; ///< Whether the texture is being sampled as a depth texture or not.
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bool is_bindless{}; ///< Whether this sampler belongs to a bindless texture or not.
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};
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class Image {
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public:
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explicit Image(std::size_t offset, std::size_t index, Tegra::Shader::ImageType type)
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: offset{offset}, index{index}, type{type}, is_bindless{false} {}
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explicit Image(u32 cbuf_index, u32 cbuf_offset, std::size_t index,
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Tegra::Shader::ImageType type)
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: offset{(static_cast<u64>(cbuf_index) << 32) | cbuf_offset}, index{index}, type{type},
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is_bindless{true} {}
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explicit Image(std::size_t offset, std::size_t index, Tegra::Shader::ImageType type,
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bool is_bindless)
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: offset{offset}, index{index}, type{type}, is_bindless{is_bindless} {}
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std::size_t GetOffset() const {
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return offset;
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}
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std::size_t GetIndex() const {
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return index;
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}
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Tegra::Shader::ImageType GetType() const {
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return type;
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}
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bool IsBindless() const {
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return is_bindless;
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}
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bool operator<(const Image& rhs) const {
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return std::tie(offset, index, type, is_bindless) <
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std::tie(rhs.offset, rhs.index, rhs.type, rhs.is_bindless);
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}
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private:
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std::size_t offset{};
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std::size_t index{};
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Tegra::Shader::ImageType type{};
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bool is_bindless{};
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};
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struct GlobalMemoryBase {
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u32 cbuf_index{};
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u32 cbuf_offset{};
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bool operator<(const GlobalMemoryBase& rhs) const {
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return std::tie(cbuf_index, cbuf_offset) < std::tie(rhs.cbuf_index, rhs.cbuf_offset);
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}
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};
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/// Parameters describing an arithmetic operation
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struct MetaArithmetic {
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bool precise{}; ///< Whether the operation can be constraint or not
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};
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/// Parameters describing a texture sampler
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struct MetaTexture {
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const Sampler& sampler;
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Node array;
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Node depth_compare;
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std::vector<Node> aoffi;
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Node bias;
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Node lod;
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Node component{};
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u32 element{};
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};
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struct MetaImage {
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const Image& image;
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std::vector<Node> values;
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};
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/// Parameters that modify an operation but are not part of any particular operand
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using Meta =
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std::variant<MetaArithmetic, MetaTexture, MetaImage, MetaStackClass, Tegra::Shader::HalfType>;
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/// Holds any kind of operation that can be done in the IR
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class OperationNode final {
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public:
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explicit OperationNode(OperationCode code) : OperationNode(code, Meta{}) {}
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explicit OperationNode(OperationCode code, Meta meta)
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: OperationNode(code, meta, std::vector<Node>{}) {}
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explicit OperationNode(OperationCode code, std::vector<Node> operands)
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: OperationNode(code, Meta{}, std::move(operands)) {}
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explicit OperationNode(OperationCode code, Meta meta, std::vector<Node> operands)
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: code{code}, meta{std::move(meta)}, operands{std::move(operands)} {}
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template <typename... Args>
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explicit OperationNode(OperationCode code, Meta meta, Args&&... operands)
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: code{code}, meta{std::move(meta)}, operands{operands...} {}
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OperationCode GetCode() const {
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return code;
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}
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const Meta& GetMeta() const {
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return meta;
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}
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std::size_t GetOperandsCount() const {
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return operands.size();
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}
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const Node& operator[](std::size_t operand_index) const {
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return operands.at(operand_index);
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}
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private:
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OperationCode code{};
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Meta meta{};
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std::vector<Node> operands;
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};
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/// Encloses inside any kind of node that returns a boolean conditionally-executed code
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class ConditionalNode final {
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public:
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explicit ConditionalNode(Node condition, std::vector<Node>&& code)
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: condition{std::move(condition)}, code{std::move(code)} {}
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const Node& GetCondition() const {
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return condition;
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}
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const std::vector<Node>& GetCode() const {
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return code;
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}
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private:
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Node condition; ///< Condition to be satisfied
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std::vector<Node> code; ///< Code to execute
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};
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/// A general purpose register
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class GprNode final {
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public:
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explicit constexpr GprNode(Tegra::Shader::Register index) : index{index} {}
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u32 GetIndex() const {
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return static_cast<u32>(index);
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}
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private:
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Tegra::Shader::Register index{};
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};
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/// A 32-bits value that represents an immediate value
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class ImmediateNode final {
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public:
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explicit constexpr ImmediateNode(u32 value) : value{value} {}
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u32 GetValue() const {
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return value;
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}
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private:
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u32 value{};
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};
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/// One of Maxwell's internal flags
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class InternalFlagNode final {
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public:
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explicit constexpr InternalFlagNode(InternalFlag flag) : flag{flag} {}
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InternalFlag GetFlag() const {
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return flag;
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}
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private:
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InternalFlag flag{};
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};
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/// A predicate register, it can be negated without additional nodes
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class PredicateNode final {
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public:
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explicit constexpr PredicateNode(Tegra::Shader::Pred index, bool negated)
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: index{index}, negated{negated} {}
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|
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Tegra::Shader::Pred GetIndex() const {
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|
return index;
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|
}
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|
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|
bool IsNegated() const {
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|
return negated;
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|
}
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|
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private:
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|
Tegra::Shader::Pred index{};
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|
bool negated{};
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|
};
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|
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/// Attribute buffer memory (known as attributes or varyings in GLSL terms)
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|
class AbufNode final {
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|
public:
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|
// Initialize for standard attributes (index is explicit).
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|
explicit AbufNode(Tegra::Shader::Attribute::Index index, u32 element, Node buffer = {})
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|
: buffer{std::move(buffer)}, index{index}, element{element} {}
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|
|
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// Initialize for physical attributes (index is a variable value).
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explicit AbufNode(Node physical_address, Node buffer = {})
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|
: physical_address{std::move(physical_address)}, buffer{std::move(buffer)} {}
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|
|
|
Tegra::Shader::Attribute::Index GetIndex() const {
|
|
return index;
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|
}
|
|
|
|
u32 GetElement() const {
|
|
return element;
|
|
}
|
|
|
|
const Node& GetBuffer() const {
|
|
return buffer;
|
|
}
|
|
|
|
bool IsPhysicalBuffer() const {
|
|
return static_cast<bool>(physical_address);
|
|
}
|
|
|
|
const Node& GetPhysicalAddress() const {
|
|
return physical_address;
|
|
}
|
|
|
|
private:
|
|
Node physical_address;
|
|
Node buffer;
|
|
Tegra::Shader::Attribute::Index index{};
|
|
u32 element{};
|
|
};
|
|
|
|
/// Constant buffer node, usually mapped to uniform buffers in GLSL
|
|
class CbufNode final {
|
|
public:
|
|
explicit CbufNode(u32 index, Node offset) : index{index}, offset{std::move(offset)} {}
|
|
|
|
u32 GetIndex() const {
|
|
return index;
|
|
}
|
|
|
|
const Node& GetOffset() const {
|
|
return offset;
|
|
}
|
|
|
|
private:
|
|
u32 index{};
|
|
Node offset;
|
|
};
|
|
|
|
/// Local memory node
|
|
class LmemNode final {
|
|
public:
|
|
explicit LmemNode(Node address) : address{std::move(address)} {}
|
|
|
|
const Node& GetAddress() const {
|
|
return address;
|
|
}
|
|
|
|
private:
|
|
Node address;
|
|
};
|
|
|
|
/// Global memory node
|
|
class GmemNode final {
|
|
public:
|
|
explicit GmemNode(Node real_address, Node base_address, const GlobalMemoryBase& descriptor)
|
|
: real_address{std::move(real_address)}, base_address{std::move(base_address)},
|
|
descriptor{descriptor} {}
|
|
|
|
const Node& GetRealAddress() const {
|
|
return real_address;
|
|
}
|
|
|
|
const Node& GetBaseAddress() const {
|
|
return base_address;
|
|
}
|
|
|
|
const GlobalMemoryBase& GetDescriptor() const {
|
|
return descriptor;
|
|
}
|
|
|
|
private:
|
|
Node real_address;
|
|
Node base_address;
|
|
GlobalMemoryBase descriptor;
|
|
};
|
|
|
|
/// Commentary, can be dropped
|
|
class CommentNode final {
|
|
public:
|
|
explicit CommentNode(std::string text) : text{std::move(text)} {}
|
|
|
|
const std::string& GetText() const {
|
|
return text;
|
|
}
|
|
|
|
private:
|
|
std::string text;
|
|
};
|
|
|
|
} // namespace VideoCommon::Shader
|