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blender/lib/usd/usdHydra/resources/shaders/empty.glslfx

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+-- glslfx version 0.1
+
+//
+// Copyright 2018 Pixar
+//
+// Licensed under the Apache License, Version 2.0 (the "Apache License")
+// with the following modification; you may not use this file except in
+// compliance with the Apache License and the following modification to it:
+// Section 6. Trademarks. is deleted and replaced with:
+//
+// 6. Trademarks. This License does not grant permission to use the trade
+//    names, trademarks, service marks, or product names of the Licensor
+//    and its affiliates, except as required to comply with Section 4(c) of
+//    the License and to reproduce the content of the NOTICE file.
+//
+// You may obtain a copy of the Apache License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the Apache License with the above modification is
+// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the Apache License for the specific
+// language governing permissions and limitations under the Apache License.
+//
+
+-- configuration
+{
+    "techniques": {
+        "default": {
+        }
+    }
+}
+
+-- This file is intentionally empty. 

blender/lib/usd/usdHydra/resources/shaders/shaderDefs.usda

@@ -0,0 +1,252 @@
+#usda 1.0 
+
+def Shader "HwPtexTexture_1" (
+    sdrMetadata = {
+        token role = "texture"
+        token isPtex = "1"
+    }
+)
+{
+    uniform token info:id = "HwPtexTexture_1"
+    uniform token info:implementationSource = "sourceAsset"
+
+    # Add a dummy sourceAsset attribute with sourceType="glslfx", so that 
+    # an entry gets created for this deprecated shader in the registry.
+    uniform asset info:glslfx:sourceAsset = @./empty.glslfx@
+
+    token inputs:faceIndexPrimvar = "ptexFaceIndex" (
+        sdrMetadata = {
+            token primvarProperty = "1"
+        }
+    )
+
+    token inputs:faceOffsetPrimvar = "ptexFaceOffset" (
+        sdrMetadata = {
+            token primvarProperty = "1"
+        }
+    )
+
+    asset inputs:file = @@ (
+        doc = "Asset path to the file containg the image data."
+    )
+
+    float inputs:frame (
+        doc = "The frame offset for animated textures."
+    )
+
+    float inputs:textureMemory (
+        doc = """Amount of memory used to store the texture (in Mb). A value of 
+        zero specifies the native resolution."""
+    )
+
+    int inputs:faceIndex (
+        doc = """The Ptex face index from which to sample. By default, this
+        parameter will be bound to the ptexFaceIndex primvar."""
+    )
+
+    int inputs:faceOffset (
+        doc = """The Ptex face offset to be applied to the face index. By
+        default, this parameter will be bound to the ptexFaceOffset primvar."""
+    )
+
+    float outputs:r ( 
+        doc = "Outputs the red channel."
+        sdrMetadata = {
+            token swizzle = "x"
+        }
+    )
+
+    float outputs:g (
+        doc = "Outputs the green channel."
+        sdrMetadata = {
+            token swizzle = "y"
+        }
+    )
+
+    float outputs:b (
+        doc = "Outputs the blue channnel."
+        sdrMetadata = {
+            token swizzle = "z"
+        }
+    )
+
+    float outputs:a (
+        doc = "Outputs the alpha channnel."
+        sdrMetadata = {
+            token swizzle = "w"
+        }
+    )
+
+    float3 outputs:rgb (
+        doc = "Outputs the red, green and blue channels."
+        sdrMetadata = {
+            token swizzle = "xyz"
+        }
+    )
+
+    float4 outputs:rgba (
+        doc = "Outputs all 4 channels (red, green, blue and alpha)."
+        sdrMetadata = {
+            token swizzle = "xyzw"
+        }
+    )
+}
+
+def Shader "HwUvTexture_1" (
+    sdrMetadata = {
+        token role = "texture"
+        token primvars = "uv"
+    }
+)
+{
+    uniform token info:id = "HwUvTexture_1"
+    uniform token info:implementationSource = "sourceAsset"
+
+    # Add a dummy sourceAsset attribute with sourceType="glslfx", so that 
+    # an entry gets created for this deprecated shader in the registry.
+    uniform asset info:glslfx:sourceAsset = @./empty.glslfx@
+
+    asset inputs:file = @@ (
+        doc = "Asset path to the file containg the image data."
+    )
+
+    float inputs:frame (
+        doc = "The frame offset for animated textures."
+    )
+
+    float inputs:textureMemory (
+        doc = """Amount of memory used to store the texture (in Mb). A value of 
+        zero specifies the native resolution."""
+    )
+
+    float2 inputs:uv (
+        doc = "The uv coordinates at which to sample the texture."
+    )
+
+    token inputs:wrapS (
+        allowedTokens = ["clamp", "repeat", "mirror", "black"]
+        doc = "Specifies the wrap mode for this texture."
+    )
+
+    token inputs:wrapT (
+        allowedTokens = ["clamp", "repeat", "mirror", "black"]
+        doc = "Specifies the wrap mode for this texture."
+    )
+
+    token inputs:minFilter (
+        allowedTokens = ["nearest", "linear",
+                         "linearMipmapLinear", "linearMipmapNearest",
+                         "nearestMipmapLinear", "nearestMipmapNearest" ]
+        doc = "Specifies the minification filter mode for this texture."
+    )
+    
+    token inputs:magFilter (
+        allowedTokens = ["nearest", "linear"]
+        doc = "Specifies the magnification filter mode for this texture."
+    )
+
+    float4 inputs:fallback = (0.0, 0.0, 0.0, 1.0) (
+        doc = """Fallback value to be used when no texture is connected."""
+        sdrMetadata = {
+            token defaultInput = "1"
+        }
+    )
+}
+
+def Shader "HwFieldReader_1" (
+    sdrMetadata = {
+        token role = "field"
+    }
+    doc = """Samples from a usdVol FieldAsset."""
+)
+{
+    uniform asset info:glslfx:sourceAsset = @./empty.glslfx@
+    uniform token info:implementationSource = "sourceAsset"
+    token inputs:fieldname = "" (
+        connectability = "interfaceOnly"
+        doc = """Name of the field to be fetched from volume
+                 (e.g., FOO if the relationship from the volume to field is called field::FOO)."""
+        sdrMetadata = {
+            token fieldProperty = "1"
+        }
+    )
+}
+
+def Shader "HwFieldReader_float" ( 
+    inherits = </HwFieldReader_1>
+)
+{
+    uniform token info:id = "HwFieldReader_float"
+    float inputs:fallback = 0 (
+        doc = "Fallback value to be returned when fetch failed."
+        sdrMetadata = {
+            token defaultInput = "1"
+        }
+    )
+    float outputs:result (
+        sdrMetadata = {
+            token swizzle = "x"
+        }
+    )
+}
+
+def Shader "HwFieldReader_float2" (
+    inherits = </HwFieldReader_1>
+)
+{
+    uniform token info:id = "HwFieldReader_float2"
+    float2 inputs:fallback = (0, 0) (
+        doc = "Fallback value to be returned when fetch failed."
+        sdrMetadata = {
+            token defaultInput = "1"
+        }
+    )
+    float2 outputs:result (
+        sdrMetadata = {
+            token swizzle = "xy"
+        }
+    )
+}
+
+def Shader "HwFieldReader_float3" (
+    inherits = </HwFieldReader_1>
+)
+{
+    uniform token info:id = "HwFieldReader_float3"
+    float3 inputs:fallback = (0, 0, 0) (
+        doc = "Fallback value to be returned when fetch failed."
+        sdrMetadata = {
+            token defaultInput = "1"
+        }
+    )
+    float3 outputs:result (
+        sdrMetadata = {
+            token swizzle = "xyz"
+        }
+    )
+}
+
+def Shader "HwPrimvar_1" (
+    sdrMetadata = {
+        token role = "primvar"
+    }
+)
+{
+    uniform token info:id = "HwPrimvar_1"
+    uniform token info:implementationSource = "sourceAsset"
+
+    # Add a dummy sourceAsset attribute with sourceType="glslfx", so that 
+    # an entry gets created for this deprecated shader in the registry.
+    uniform asset info:glslfx:sourceAsset = @./empty.glslfx@
+
+    token inputs:varname = "" (
+        sdrMetadata = {
+            bool primvarProperty = 1
+        }
+        doc = """The name of the primvar. Note that on the gprim, this primvar
+        must follow the standard UsdGeom primvar declaration.        
+        Further note that this name should not contain the UsdGeom primvar
+        namespace prefix.
+        """
+    )
+}