// // Copyright (c) 2016 Advanced Micro Devices, Inc. All rights reserved. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. // /** ************************************************************************************************************* * @File ags_shader_intrinsics_dx11.hlsl * * @brief * AMD D3D Shader Intrinsics API hlsl file. * This include file contains the shader intrinsics definitions (structures, enums, constant) * and HLSL shader intrinsics functions. * ************************************************************************************************************* */ #ifndef _AMDDXEXTSHADERINTRINSICS_HLSL_ #define _AMDDXEXTSHADERINTRINSICS_HLSL_ /** ************************************************************************************************************* * Definitions to construct the intrinsic instruction composed of an opcode and optional immediate data. ************************************************************************************************************* */ #define AmdDxExtShaderIntrinsics_MagicCodeShift 28 #define AmdDxExtShaderIntrinsics_MagicCodeMask 0xf #define AmdDxExtShaderIntrinsics_OpcodePhaseShift 24 #define AmdDxExtShaderIntrinsics_OpcodePhaseMask 0x3 #define AmdDxExtShaderIntrinsics_DataShift 8 #define AmdDxExtShaderIntrinsics_DataMask 0xffff #define AmdDxExtShaderIntrinsics_OpcodeShift 0 #define AmdDxExtShaderIntrinsics_OpcodeMask 0xff #define AmdDxExtShaderIntrinsics_MagicCode 0x5 /** ************************************************************************************************************* * Intrinsic opcodes. ************************************************************************************************************* */ #define AmdDxExtShaderIntrinsicsOpcode_Readfirstlane 0x01 #define AmdDxExtShaderIntrinsicsOpcode_Readlane 0x02 #define AmdDxExtShaderIntrinsicsOpcode_LaneId 0x03 #define AmdDxExtShaderIntrinsicsOpcode_Swizzle 0x04 #define AmdDxExtShaderIntrinsicsOpcode_Ballot 0x05 #define AmdDxExtShaderIntrinsicsOpcode_MBCnt 0x06 #define AmdDxExtShaderIntrinsicsOpcode_Min3U 0x08 #define AmdDxExtShaderIntrinsicsOpcode_Min3F 0x09 #define AmdDxExtShaderIntrinsicsOpcode_Med3U 0x0a #define AmdDxExtShaderIntrinsicsOpcode_Med3F 0x0b #define AmdDxExtShaderIntrinsicsOpcode_Max3U 0x0c #define AmdDxExtShaderIntrinsicsOpcode_Max3F 0x0d #define AmdDxExtShaderIntrinsicsOpcode_BaryCoord 0x0e #define AmdDxExtShaderIntrinsicsOpcode_VtxParam 0x0f /** ************************************************************************************************************* * Intrinsic opcode phases. ************************************************************************************************************* */ #define AmdDxExtShaderIntrinsicsOpcodePhase_0 0x0 #define AmdDxExtShaderIntrinsicsOpcodePhase_1 0x1 #define AmdDxExtShaderIntrinsicsOpcodePhase_2 0x2 #define AmdDxExtShaderIntrinsicsOpcodePhase_3 0x3 /** ************************************************************************************************************* * AmdDxExtShaderIntrinsicsSwizzle defines for common swizzles. Can be used as the operation parameter for * the AmdDxExtShaderIntrinsics_Swizzle intrinsic. ************************************************************************************************************* */ #define AmdDxExtShaderIntrinsicsSwizzle_SwapX1 0x041f #define AmdDxExtShaderIntrinsicsSwizzle_SwapX2 0x081f #define AmdDxExtShaderIntrinsicsSwizzle_SwapX4 0x101f #define AmdDxExtShaderIntrinsicsSwizzle_SwapX8 0x201f #define AmdDxExtShaderIntrinsicsSwizzle_SwapX16 0x401f #define AmdDxExtShaderIntrinsicsSwizzle_ReverseX2 0x041f #define AmdDxExtShaderIntrinsicsSwizzle_ReverseX4 0x0c1f #define AmdDxExtShaderIntrinsicsSwizzle_ReverseX8 0x1c1f #define AmdDxExtShaderIntrinsicsSwizzle_ReverseX16 0x3c1f #define AmdDxExtShaderIntrinsicsSwizzle_ReverseX32 0x7c1f #define AmdDxExtShaderIntrinsicsSwizzle_BCastX2 0x003e #define AmdDxExtShaderIntrinsicsSwizzle_BCastX4 0x003c #define AmdDxExtShaderIntrinsicsSwizzle_BCastX8 0x0038 #define AmdDxExtShaderIntrinsicsSwizzle_BCastX16 0x0030 #define AmdDxExtShaderIntrinsicsSwizzle_BCastX32 0x0020 /** ************************************************************************************************************* * AmdDxExtShaderIntrinsicsBarycentric defines for barycentric interpolation mode. To be used with * AmdDxExtShaderIntrinsicsOpcode_IjBarycentricCoords to specify the interpolation mode. ************************************************************************************************************* */ #define AmdDxExtShaderIntrinsicsBarycentric_LinearCenter 0x1 #define AmdDxExtShaderIntrinsicsBarycentric_LinearCentroid 0x2 #define AmdDxExtShaderIntrinsicsBarycentric_LinearSample 0x3 #define AmdDxExtShaderIntrinsicsBarycentric_PerspCenter 0x4 #define AmdDxExtShaderIntrinsicsBarycentric_PerspCentroid 0x5 #define AmdDxExtShaderIntrinsicsBarycentric_PerspSample 0x6 #define AmdDxExtShaderIntrinsicsBarycentric_PerspPullModel 0x7 /** ************************************************************************************************************* * AmdDxExtShaderIntrinsicsBarycentric defines for specifying vertex and parameter indices. To be used as * the inputs to the AmdDxExtShaderIntrinsicsOpcode_VertexParameter function ************************************************************************************************************* */ #define AmdDxExtShaderIntrinsicsBarycentric_Vertex0 0x0 #define AmdDxExtShaderIntrinsicsBarycentric_Vertex1 0x1 #define AmdDxExtShaderIntrinsicsBarycentric_Vertex2 0x2 #define AmdDxExtShaderIntrinsicsBarycentric_Param0 0x00 #define AmdDxExtShaderIntrinsicsBarycentric_Param1 0x01 #define AmdDxExtShaderIntrinsicsBarycentric_Param2 0x02 #define AmdDxExtShaderIntrinsicsBarycentric_Param3 0x03 #define AmdDxExtShaderIntrinsicsBarycentric_Param4 0x04 #define AmdDxExtShaderIntrinsicsBarycentric_Param5 0x05 #define AmdDxExtShaderIntrinsicsBarycentric_Param6 0x06 #define AmdDxExtShaderIntrinsicsBarycentric_Param7 0x07 #define AmdDxExtShaderIntrinsicsBarycentric_Param8 0x08 #define AmdDxExtShaderIntrinsicsBarycentric_Param9 0x09 #define AmdDxExtShaderIntrinsicsBarycentric_Param10 0x0a #define AmdDxExtShaderIntrinsicsBarycentric_Param11 0x0b #define AmdDxExtShaderIntrinsicsBarycentric_Param12 0x0c #define AmdDxExtShaderIntrinsicsBarycentric_Param13 0x0d #define AmdDxExtShaderIntrinsicsBarycentric_Param14 0x0e #define AmdDxExtShaderIntrinsicsBarycentric_Param15 0x0f #define AmdDxExtShaderIntrinsicsBarycentric_Param16 0x10 #define AmdDxExtShaderIntrinsicsBarycentric_Param17 0x11 #define AmdDxExtShaderIntrinsicsBarycentric_Param18 0x12 #define AmdDxExtShaderIntrinsicsBarycentric_Param19 0x13 #define AmdDxExtShaderIntrinsicsBarycentric_Param20 0x14 #define AmdDxExtShaderIntrinsicsBarycentric_Param21 0x15 #define AmdDxExtShaderIntrinsicsBarycentric_Param22 0x16 #define AmdDxExtShaderIntrinsicsBarycentric_Param23 0x17 #define AmdDxExtShaderIntrinsicsBarycentric_Param24 0x18 #define AmdDxExtShaderIntrinsicsBarycentric_Param25 0x19 #define AmdDxExtShaderIntrinsicsBarycentric_Param26 0x1a #define AmdDxExtShaderIntrinsicsBarycentric_Param27 0x1b #define AmdDxExtShaderIntrinsicsBarycentric_Param28 0x1c #define AmdDxExtShaderIntrinsicsBarycentric_Param29 0x1d #define AmdDxExtShaderIntrinsicsBarycentric_Param30 0x1e #define AmdDxExtShaderIntrinsicsBarycentric_Param31 0x1f #define AmdDxExtShaderIntrinsicsBarycentric_ComponentX 0x0 #define AmdDxExtShaderIntrinsicsBarycentric_ComponentY 0x1 #define AmdDxExtShaderIntrinsicsBarycentric_ComponentZ 0x2 #define AmdDxExtShaderIntrinsicsBarycentric_ComponentW 0x3 #define AmdDxExtShaderIntrinsicsBarycentric_ParamShift 0 #define AmdDxExtShaderIntrinsicsBarycentric_ParamMask 0x1f #define AmdDxExtShaderIntrinsicsBarycentric_VtxShift 0x5 #define AmdDxExtShaderIntrinsicsBarycentric_VtxMask 0x3 #define AmdDxExtShaderIntrinsicsBarycentric_ComponentShift 0x7 #define AmdDxExtShaderIntrinsicsBarycentric_ComponentMask 0x3 /** ************************************************************************************************************* * Resource slots ************************************************************************************************************* */ #ifndef AmdDxExtShaderIntrinsicsUAVSlot #define AmdDxExtShaderIntrinsicsUAVSlot u7 #endif RWByteAddressBuffer AmdDxExtShaderIntrinsicsUAV : register(AmdDxExtShaderIntrinsicsUAVSlot); /** ************************************************************************************************************* * MakeAmdShaderIntrinsicsInstruction * * Creates instruction from supplied opcode and immediate data. * NOTE: This is an internal function and should not be called by the source HLSL shader directly. * ************************************************************************************************************* */ uint MakeAmdShaderIntrinsicsInstruction(uint opcode, uint opcodePhase, uint immediateData) { return ((AmdDxExtShaderIntrinsics_MagicCode << AmdDxExtShaderIntrinsics_MagicCodeShift) | (immediateData << AmdDxExtShaderIntrinsics_DataShift) | (opcodePhase << AmdDxExtShaderIntrinsics_OpcodePhaseShift) | (opcode << AmdDxExtShaderIntrinsics_OpcodeShift)); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_ReadfirstlaneF * * Returns the value of float src for the first active lane of the wavefront. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Readfirstlane) returned S_OK. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_ReadfirstlaneF(float src) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Readfirstlane, 0, 0); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, asuint(src), 0, retVal); return asfloat(retVal); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_ReadfirstlaneU * * Returns the value of unsigned integer src for the first active lane of the wavefront. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Readfirstlane) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_ReadfirstlaneU(uint src) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Readfirstlane, 0, 0); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, src, 0, retVal); return retVal; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Readlane * * Returns the value of float src for the lane within the wavefront specified by laneId. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Readlane) returned S_OK. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_ReadlaneF(float src, uint laneId) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Readlane, 0, laneId); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, asuint(src), 0, retVal); return asfloat(retVal); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_ReadlaneU * * Returns the value of unsigned integer src for the lane within the wavefront specified by laneId. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Readlane) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_ReadlaneU(uint src, uint laneId) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Readlane, 0, laneId); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, src, 0, retVal); return retVal; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_LaneId * * Returns the current lane id for the thread within the wavefront. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_LaneId) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_LaneId() { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_LaneId, 0, 0); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, 0, 0, retVal); return retVal; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Swizzle * * Generic instruction to shuffle the float src value among different lanes as specified by the * operation. * Note that the operation parameter must be an immediately specified value not a value from a variable. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Swizzle) returned S_OK. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_SwizzleF(float src, uint operation) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Swizzle, 0, operation); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, asuint(src), 0, retVal); return asfloat(retVal); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_SwizzleU * * Generic instruction to shuffle the unsigned integer src value among different lanes as specified by the * operation. * Note that the operation parameter must be an immediately specified value not a value from a variable. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Swizzle) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_SwizzleU(uint src, uint operation) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Swizzle, 0, operation); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, src, 0, retVal); return retVal; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Ballot * * Given an input predicate returns a bit mask indicating for which lanes the predicate is true. * Inactive or non-existent lanes will always return 0. The number of existent lanes is the * wavefront size. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Ballot) returned S_OK. * ************************************************************************************************************* */ uint2 AmdDxExtShaderIntrinsics_Ballot(bool predicate) { uint instruction; uint retVal1; instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Ballot, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, predicate, 0, retVal1); uint retVal2; instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Ballot, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, predicate, 0, retVal2); return uint2(retVal1, retVal2); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_BallotAny * * Convenience routine that uses Ballot and returns true if for any of the active lanes the predicate * is true. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Ballot) returned S_OK. * ************************************************************************************************************* */ bool AmdDxExtShaderIntrinsics_BallotAny(bool predicate) { uint2 retVal = AmdDxExtShaderIntrinsics_Ballot(predicate); return ((retVal.x | retVal.y) != 0 ? true : false); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_BallotAll * * Convenience routine that uses Ballot and returns true if for all of the active lanes the predicate * is true. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Ballot) returned S_OK. * ************************************************************************************************************* */ bool AmdDxExtShaderIntrinsics_BallotAll(bool predicate) { uint2 ballot = AmdDxExtShaderIntrinsics_Ballot(predicate); uint2 execMask = AmdDxExtShaderIntrinsics_Ballot(true); return ((ballot.x == execMask.x) && (ballot.y == execMask.y)); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_MBCnt * * Returns the masked bit count of the source register for this thread within all the active threads * within a wavefront. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_MBCnt) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_MBCnt(uint2 src) { uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_MBCnt, 0, 0); uint retVal; AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, src.x, src.y, retVal); return retVal; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Min3F * * Returns the minimum value of the three floating point source arguments. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Compare3) returned S_OK. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_Min3F(float src0, float src1, float src2) { uint minimum; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Min3F, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, asuint(src0), asuint(src1), minimum); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Min3F, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, asuint(src2), minimum, minimum); return asfloat(minimum); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Min3U * * Returns the minimum value of the three unsigned integer source arguments. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Compare3) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_Min3U(uint src0, uint src1, uint src2) { uint minimum; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Min3U, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, src0, src1, minimum); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Min3U, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, src2, minimum, minimum); return minimum; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Med3F * * Returns the median value of the three floating point source arguments. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Compare3) returned S_OK. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_Med3F(float src0, float src1, float src2) { uint median; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Med3F, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, asuint(src0), asuint(src1), median); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Med3F, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, asuint(src2), median, median); return asfloat(median); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Med3U * * Returns the median value of the three unsigned integer source arguments. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Compare3) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_Med3U(uint src0, uint src1, uint src2) { uint median; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Med3U, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, src0, src1, median); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Med3U, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, src2, median, median); return median; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Max3F * * Returns the maximum value of the three floating point source arguments. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Compare3) returned S_OK. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_Max3F(float src0, float src1, float src2) { uint maximum; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Max3F, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, asuint(src0), asuint(src1), maximum); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Max3F, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, asuint(src2), maximum, maximum); return asfloat(maximum); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_Max3U * * Returns the maximum value of the three unsigned integer source arguments. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_Compare3) returned S_OK. * ************************************************************************************************************* */ uint AmdDxExtShaderIntrinsics_Max3U(uint src0, uint src1, uint src2) { uint maximum; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Max3U, AmdDxExtShaderIntrinsicsOpcodePhase_0, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, src0, src1, maximum); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_Max3U, AmdDxExtShaderIntrinsicsOpcodePhase_1, 0); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, src2, maximum, maximum); return maximum; } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_IjBarycentricCoords * * Returns the (i, j) barycentric coordinate pair for this shader invocation with the specified * interpolation mode at the specified pixel location. Should not be used for "pull-model" interpolation, * PullModelBarycentricCoords should be used instead * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_BaryCoord) returned S_OK. * * Can only be used in pixel shader stages. * ************************************************************************************************************* */ float2 AmdDxExtShaderIntrinsics_IjBarycentricCoords(uint interpMode) { uint2 retVal; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_BaryCoord, AmdDxExtShaderIntrinsicsOpcodePhase_0, interpMode); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, 0, 0, retVal.x); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_BaryCoord, AmdDxExtShaderIntrinsicsOpcodePhase_1, interpMode); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, retVal.x, 0, retVal.y); return float2(asfloat(retVal.x), asfloat(retVal.y)); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_PullModelBarycentricCoords * * Returns the (1/W,1/I,1/J) coordinates at the pixel center which can be used for custom interpolation at * any location in the pixel. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_BaryCoord) returned S_OK. * * Can only be used in pixel shader stages. * ************************************************************************************************************* */ float3 AmdDxExtShaderIntrinsics_PullModelBarycentricCoords() { uint3 retVal; uint instruction1 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_BaryCoord, AmdDxExtShaderIntrinsicsOpcodePhase_0, AmdDxExtShaderIntrinsicsBarycentric_PerspPullModel); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction1, 0, 0, retVal.x); uint instruction2 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_BaryCoord, AmdDxExtShaderIntrinsicsOpcodePhase_1, AmdDxExtShaderIntrinsicsBarycentric_PerspPullModel); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction2, retVal.x, 0, retVal.y); uint instruction3 = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_BaryCoord, AmdDxExtShaderIntrinsicsOpcodePhase_2, AmdDxExtShaderIntrinsicsBarycentric_PerspPullModel); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction3, retVal.y, 0, retVal.z); return float3(asfloat(retVal.x), asfloat(retVal.y), asfloat(retVal.z)); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_VertexParameter * * Returns the triangle's parameter information at the specified triangle vertex. * The vertex and parameter indices must specified as immediate values. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_VtxParam) returned S_OK. * * Only available in pixel shader stages. * ************************************************************************************************************* */ float4 AmdDxExtShaderIntrinsics_VertexParameter(uint vertexIdx, uint parameterIdx) { uint4 retVal; uint4 instruction; instruction.x = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_VtxParam, AmdDxExtShaderIntrinsicsOpcodePhase_0, ((vertexIdx << AmdDxExtShaderIntrinsicsBarycentric_VtxShift) | (parameterIdx << AmdDxExtShaderIntrinsicsBarycentric_ParamShift) | (AmdDxExtShaderIntrinsicsBarycentric_ComponentX << AmdDxExtShaderIntrinsicsBarycentric_ComponentShift))); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction.x, 0, 0, retVal.x); instruction.y = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_VtxParam, AmdDxExtShaderIntrinsicsOpcodePhase_0, ((vertexIdx << AmdDxExtShaderIntrinsicsBarycentric_VtxShift) | (parameterIdx << AmdDxExtShaderIntrinsicsBarycentric_ParamShift) | (AmdDxExtShaderIntrinsicsBarycentric_ComponentY << AmdDxExtShaderIntrinsicsBarycentric_ComponentShift))); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction.y, 0, 0, retVal.y); instruction.z = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_VtxParam, AmdDxExtShaderIntrinsicsOpcodePhase_0, ((vertexIdx << AmdDxExtShaderIntrinsicsBarycentric_VtxShift) | (parameterIdx << AmdDxExtShaderIntrinsicsBarycentric_ParamShift) | (AmdDxExtShaderIntrinsicsBarycentric_ComponentZ << AmdDxExtShaderIntrinsicsBarycentric_ComponentShift))); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction.z, 0, 0, retVal.z); instruction.w = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_VtxParam, AmdDxExtShaderIntrinsicsOpcodePhase_0, ((vertexIdx << AmdDxExtShaderIntrinsicsBarycentric_VtxShift) | (parameterIdx << AmdDxExtShaderIntrinsicsBarycentric_ParamShift) | (AmdDxExtShaderIntrinsicsBarycentric_ComponentW << AmdDxExtShaderIntrinsicsBarycentric_ComponentShift))); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction.w, 0, 0, retVal.w); return float4(asfloat(retVal.x), asfloat(retVal.y), asfloat(retVal.z), asfloat(retVal.w)); } /** ************************************************************************************************************* * AmdDxExtShaderIntrinsics_VertexParameterComponent * * Returns the triangle's parameter information at the specified triangle vertex and component. * The vertex, parameter and component indices must be specified as immediate values. * * Available if CheckSupport(AmdDxExtShaderIntrinsicsSupport_VtxParam) returned S_OK. * * Only available in pixel shader stages. * ************************************************************************************************************* */ float AmdDxExtShaderIntrinsics_VertexParameterComponent(uint vertexIdx, uint parameterIdx, uint componentIdx) { uint retVal; uint instruction = MakeAmdShaderIntrinsicsInstruction(AmdDxExtShaderIntrinsicsOpcode_VtxParam, AmdDxExtShaderIntrinsicsOpcodePhase_0, ((vertexIdx << AmdDxExtShaderIntrinsicsBarycentric_VtxShift) | (parameterIdx << AmdDxExtShaderIntrinsicsBarycentric_ParamShift) | (componentIdx << AmdDxExtShaderIntrinsicsBarycentric_ComponentShift))); AmdDxExtShaderIntrinsicsUAV.InterlockedCompareExchange(instruction, 0, 0, retVal); return asfloat(retVal); } #endif // AMD_HLSL_EXTENSION