WIP adding switch support (not working yet).

ScriptableRenderPipeline/Core/CoreRP/ShaderLibrary/API/Switch.hlsl

+// This file assume SHADER_API_SWITCH is defined
+// TODO: This is a straight copy from D3D11.hlsl. Go through all this stuff and adjust where needed.
+
+#define UNITY_UV_STARTS_AT_TOP 1
+#define UNITY_REVERSED_Z 1
+#define UNITY_NEAR_CLIP_VALUE (1.0)
+// This value will not go through any matrix projection conversion
+#define UNITY_RAW_FAR_CLIP_VALUE (0.0)
+#define VERTEXID_SEMANTIC SV_VertexID
+#define FRONT_FACE_SEMANTIC SV_IsFrontFace
+#define FRONT_FACE_TYPE bool
+#define IS_FRONT_VFACE(VAL, FRONT, BACK) ((VAL) ? (FRONT) : (BACK))
+
+#define CBUFFER_START(name) cbuffer name {
+#define CBUFFER_END };
+
+// flow control attributes
+#define UNITY_BRANCH        [branch]
+#define UNITY_FLATTEN       [flatten]
+#define UNITY_UNROLL        [unroll]
+#define UNITY_UNROLLX(_x)   [unroll(_x)]
+#define UNITY_LOOP          [loop]
+
+// Initialize arbitrary structure with zero values.
+// Do not exist on some platform, in this case we need to have a standard name that call a function that will initialize all parameters to 0
+#define ZERO_INITIALIZE(type, name) name = (type)0;
+#define ZERO_INITIALIZE_ARRAY(type, name, arraySize) { for (int arrayIndex = 0; arrayIndex < arraySize; arrayIndex++) { name[arrayIndex] = (type)0; } }
+
+// Texture util abstraction
+
+#define CALCULATE_TEXTURE2D_LOD(textureName, samplerName, coord2) textureName.CalculateLevelOfDetail(samplerName, coord2)
+
+// Texture abstraction
+
+#define TEXTURE2D(textureName)                Texture2D textureName
+#define TEXTURE2D_ARRAY(textureName)          Texture2DArray textureName
+#define TEXTURECUBE(textureName)              TextureCube textureName
+#define TEXTURECUBE_ARRAY(textureName)        TextureCubeArray textureName
+#define TEXTURE3D(textureName)                Texture3D textureName
+
+#define TEXTURE2D_SHADOW(textureName)         TEXTURE2D(textureName)
+#define TEXTURE2D_ARRAY_SHADOW(textureName)   TEXTURE2D_ARRAY(textureName)
+#define TEXTURECUBE_SHADOW(textureName)       TEXTURECUBE(textureName)
+#define TEXTURECUBE_ARRAY_SHADOW(textureName) TEXTURECUBE_ARRAY(textureName)
+
+#define RW_TEXTURE2D(type, textureName)       RWTexture2D<type> textureName
+#define RW_TEXTURE3D(type, textureName)       RWTexture3D<type> textureName
+
+#define SAMPLER(samplerName)                  SamplerState samplerName
+#define SAMPLER_CMP(samplerName)              SamplerComparisonState samplerName
+
+#define TEXTURE2D_ARGS(textureName, samplerName)                 TEXTURE2D(textureName),         SAMPLER(samplerName)
+#define TEXTURE2D_ARRAY_ARGS(textureName, samplerName)           TEXTURE2D_ARRAY(textureName),   SAMPLER(samplerName)
+#define TEXTURECUBE_ARGS(textureName, samplerName)               TEXTURECUBE(textureName),       SAMPLER(samplerName)
+#define TEXTURECUBE_ARRAY_ARGS(textureName, samplerName)         TEXTURECUBE_ARRAY(textureName), SAMPLER(samplerName)
+#define TEXTURE3D_ARGS(textureName, samplerName)                 TEXTURE3D(textureName),         SAMPLER(samplerName)
+
+#define TEXTURE2D_SHADOW_ARGS(textureName, samplerName)          TEXTURE2D(textureName),         SAMPLER_CMP(samplerName)
+#define TEXTURE2D_ARRAY_SHADOW_ARGS(textureName, samplerName)    TEXTURE2D_ARRAY(textureName),   SAMPLER_CMP(samplerName)
+#define TEXTURECUBE_SHADOW_ARGS(textureName, samplerName)        TEXTURECUBE(textureName),       SAMPLER_CMP(samplerName)
+#define TEXTURECUBE_ARRAY_SHADOW_ARGS(textureName, samplerName)  TEXTURECUBE_ARRAY(textureName), SAMPLER_CMP(samplerName)
+
+#define TEXTURE2D_PARAM(textureName, samplerName)                textureName, samplerName
+#define TEXTURE2D_ARRAY_PARAM(textureName, samplerName)          textureName, samplerName
+#define TEXTURECUBE_PARAM(textureName, samplerName)              textureName, samplerName
+#define TEXTURECUBE_ARRAY_PARAM(textureName, samplerName)        textureName, samplerName
+#define TEXTURE3D_PARAM(textureName, samplerName)                textureName, samplerName
+
+#define TEXTURE2D_SHADOW_PARAM(textureName, samplerName)         textureName, samplerName
+#define TEXTURE2D_ARRAY_SHADOW_PARAM(textureName, samplerName)   textureName, samplerName
+#define TEXTURECUBE_SHADOW_PARAM(textureName, samplerName)       textureName, samplerName
+#define TEXTURECUBE_ARRAY_SHADOW_PARAM(textureName, samplerName) textureName, samplerName
+
+#define SAMPLE_TEXTURE2D(textureName, samplerName, coord2)                           textureName.Sample(samplerName, coord2)
+#define SAMPLE_TEXTURE2D_LOD(textureName, samplerName, coord2, lod)                  textureName.SampleLevel(samplerName, coord2, lod)
+#define SAMPLE_TEXTURE2D_BIAS(textureName, samplerName, coord2, bias)                textureName.SampleBias(samplerName, coord2, bias)
+#define SAMPLE_TEXTURE2D_GRAD(textureName, samplerName, coord2, dpdx, dpdy)          textureName.SampleGrad(samplerName, coord2, dpdx, dpdy)
+#define SAMPLE_TEXTURE2D_ARRAY(textureName, samplerName, coord2, index)              textureName.Sample(samplerName, float3(coord2, index))
+#define SAMPLE_TEXTURE2D_ARRAY_LOD(textureName, samplerName, coord2, index, lod)     textureName.SampleLevel(samplerName, float3(coord2, index), lod)
+#define SAMPLE_TEXTURE2D_ARRAY_BIAS(textureName, samplerName, coord2, index, bias)   textureName.SampleBias(samplerName, float3(coord2, index), bias)
+#define SAMPLE_TEXTURECUBE(textureName, samplerName, coord3)                         textureName.Sample(samplerName, coord3)
+#define SAMPLE_TEXTURECUBE_LOD(textureName, samplerName, coord3, lod)                textureName.SampleLevel(samplerName, coord3, lod)
+#define SAMPLE_TEXTURECUBE_BIAS(textureName, samplerName, coord3, bias)              textureName.SampleBias(samplerName, coord3, bias)
+#define SAMPLE_TEXTURECUBE_ARRAY(textureName, samplerName, coord3, index)            textureName.Sample(samplerName, float4(coord3, index))
+#define SAMPLE_TEXTURECUBE_ARRAY_LOD(textureName, samplerName, coord3, index, lod)   textureName.SampleLevel(samplerName, float4(coord3, index), lod)
+#define SAMPLE_TEXTURECUBE_ARRAY_BIAS(textureName, samplerName, coord3, index, bias) textureName.SampleBias(samplerName, float4(coord3, index), bias)
+#define SAMPLE_TEXTURE3D(textureName, samplerName, coord3)                           textureName.Sample(samplerName, coord3)
+#define SAMPLE_TEXTURE3D_LOD(textureName, samplerName, coord3, lod) 				 textureName.SampleLevel(samplerName, coord3, lod)
+
+#define SAMPLE_TEXTURE2D_SHADOW(textureName, samplerName, coord3)                    textureName.SampleCmpLevelZero(samplerName, (coord3).xy, (coord3).z)
+#define SAMPLE_TEXTURE2D_ARRAY_SHADOW(textureName, samplerName, coord3, index)       textureName.SampleCmpLevelZero(samplerName, float3((coord3).xy, index), (coord3).z)
+#define SAMPLE_TEXTURECUBE_SHADOW(textureName, samplerName, coord4)                  textureName.SampleCmpLevelZero(samplerName, (coord3).xyz, (coord3).w)
+#define SAMPLE_TEXTURECUBE_ARRAY_SHADOW(textureName, samplerName, coord4, index)     textureName.SampleCmpLevelZero(samplerName, float4((coord4).xyz, index), (coord4).w)
+
+#define SAMPLE_DEPTH_TEXTURE(textureName, samplerName, coord2)          SAMPLE_TEXTURE2D(textureName, samplerName, coord2).r
+#define SAMPLE_DEPTH_TEXTURE_LOD(textureName, samplerName, coord2, lod) SAMPLE_TEXTURE2D_LOD(textureName, samplerName, coord2, lod).r
+
+float4 switch_load_texture2d(Texture2D texName, uint2 unCoord2) {
+    uint _tw; uint _th;
+    texName.GetDimensions(_tw, _th);
+    unCoord2 = clamp(unCoord2, uint2(0, 0), uint2(_tw-1, _th-1));
+    return texName.Load(int3(unCoord2, 0));
+}
+//(kc)#define LOAD_TEXTURE2D(textureName, unCoord2)                       textureName.Load(int3(unCoord2, 0))
+#define LOAD_TEXTURE2D(textureName, unCoord2)                       switch_load_texture2d(textureName, unCoord2)
+#define LOAD_TEXTURE2D_LOD(textureName, unCoord2, lod)              textureName.Load(int3(unCoord2, lod))
+#define LOAD_TEXTURE2D_MSAA(textureName, unCoord2, sampleIndex)     textureName.Load(unCoord2, sampleIndex)
+#define LOAD_TEXTURE2D_ARRAY(textureName, unCoord2, index)          textureName.Load(int4(unCoord2, index, 0))
+#define LOAD_TEXTURE2D_ARRAY_LOD(textureName, unCoord2, index, lod) textureName.Load(int4(unCoord2, index, lod))
+#define LOAD_TEXTURE3D(textureName, unCoord3)                       textureName.Load(int4(unCoord3, 0))
+#define LOAD_TEXTURE3D_LOD(textureName, unCoord3, lod)              textureName.Load(int4(unCoord3, lod))
+
+#define PLATFORM_SUPPORT_GATHER
+#define GATHER_TEXTURE2D(textureName, samplerName, coord2, offset)        textureName.Gather(samplerName, coord2, offset)
+#define GATHER_TEXTURE2D_ARRAY(textureName, samplerName, coord2, index)   textureName.Gather(samplerName, float3(coord2, index), offset)
+#define GATHER_TEXTURECUBE(textureName, samplerName, coord3)              textureName.Gather(samplerName, coord3)
+#define GATHER_TEXTURECUBE_ARRAY(textureName, samplerName, coord3, index) textureName.Gather(samplerName, float4(coord3, index))
+
+#define GATHER_RED_TEXTURE2D(textureName, samplerName, coord2, offset)      textureName.GatherRed(samplerName, coord2, offset)
+#define GATHER_GREEN_TEXTURE2D(textureName, samplerName, coord2, offset)    textureName.GatherGreen(samplerName, coord2, offset)
+#define GATHER_BLUE_TEXTURE2D(textureName, samplerName, coord2, offset)     textureName.GatherBlue(samplerName, coord2, offset)

ScriptableRenderPipeline/Core/CoreRP/ShaderLibrary/API/Switch.hlsl.meta

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