Merge pull request #88 from AlexSchwank/feature/textureFileFormatTests

Added first set of texture file format tests

Author: jcowles

test_assets/TextureFileFormatTests/Readme.md

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+# Texture File Format Tests
+
+This set of assets is intended to test support for loading and rendering basic texture file formats.
+
+The left material for each texture case is not using opacity. The right material is.
+
+## Screenshot
+
+![screenshot](screenshots/all_files.png)  
+_usdrecord 24.03_
+
+## File formats
+
+| File format | Configuration | Texture |
+| --- | --- | --- |
+| JPEG | CMYK, 8-bit | ![jpeg cmyk 8-bit](jpeg_cmyk_8-bit.jpg) |
+| JPEG | RGB, 8-bit | ![jpeg rgb 8-bit](jpeg_rgb_8-bit.jpg) |
+| JPEG | Grayscale, 8-bit | ![png grayscale 8-bit](png_grayscale_8-bit.png) |
+| PNG | Grayscale 8-bit | ![png grayscale 8-bit](png_grayscale_8-bit.png) |
+| PNG | Grayscale, 16-bit | ![png grayscale 16-bit](png_grayscale_16-bit.png) |
+| PNG | RGB, 8-bit | ![png rgb 8-bit](png_rgb_8-bit.png) |
+| PNG | RGB, 16-bit | ![png rgb 16-bit](png_rgb_16-bit.png) |
+| PNG | RGB, 32-bit | ![png rgb 32-bit](png_rgb_32-bit.png)|

test_assets/TextureFileFormatTests/_scene.usda

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+#usda 1.0
+(
+    defaultPrim = "Scene"
+    upAxis = "Y"
+    metersPerUnit = 1
+    customLayerData = {
+        string copyright = "Copyright 2024 Apple Inc. All rights reserved."
+    }
+)
+
+def Xform "Scene" (
+    kind = "component"
+)
+{
+    def Scope "Looks"
+    {
+        def Material "MainMaterial"
+        {
+            token outputs:surface.connect = </Scene/Looks/MainMaterial/PbrPreview.outputs:surface>
+
+            def Shader "PbrPreview"
+            {
+                uniform token info:id = "UsdPreviewSurface"
+                color3f inputs:diffuseColor.connect  = </Scene/Looks/MainMaterial/Diffuse.outputs:rgb>
+                token outputs:surface
+            }
+
+            def Shader "Diffuse"
+            {
+                uniform token info:id = "UsdUVTexture"
+                float2 inputs:st.connect = </Scene/Looks/MainMaterial/Primvar.outputs:result>
+                float3 outputs:rgb
+            }
+
+            def Shader "Primvar"
+            {
+                uniform token info:id = "UsdPrimvarReader_float2"
+                string inputs:varname = "st"
+                float2 outputs:result
+            }
+        }
+
+        def Material "MainMaterialWithOpacity"
+        {
+            token outputs:surface.connect = </Scene/Looks/MainMaterialWithOpacity/PbrPreview.outputs:surface>
+
+            def Shader "PbrPreview"
+            {
+                uniform token info:id = "UsdPreviewSurface"
+                color3f inputs:diffuseColor.connect  = </Scene/Looks/MainMaterialWithOpacity/Diffuse.outputs:rgb>
+                float inputs:opacity.connect = </Scene/Looks/MainMaterialWithOpacity/Diffuse.outputs:a>
+                token outputs:surface
+            }
+
+            def Shader "Diffuse"
+            {
+                uniform token info:id = "UsdUVTexture"
+                float2 inputs:st.connect = </Scene/Looks/MainMaterialWithOpacity/Primvar.outputs:result>
+                float3 outputs:rgb
+                float outputs:a
+            }
+
+            def Shader "Primvar"
+            {
+                uniform token info:id = "UsdPrimvarReader_float2"
+                string inputs:varname = "st"
+                float2 outputs:result
+            }
+        }
+    }
+
+    def Xform "Geom"
+    {
+        def Mesh "Backgroud"
+        {
+            color3f[] primvars:displayColor = [(0.7, 0, 0.7)] (
+                interpolation = "constant"
+            )
+            int[] faceVertexCounts = [4]
+            int[] faceVertexIndices = [0, 1, 2, 3]
+            point3f[] points = [(-0.1,-0.1,-0.1), (2.2,-0.1,-0.1), (2.2,1.1,-0.1), (-0.1,1.1,-0.1)]
+        }
+
+        def Mesh "Plane" (
+            prepend apiSchemas = ["MaterialBindingAPI"]
+        )
+        {
+            rel material:binding = </Scene/Looks/MainMaterial>
+            float2[] primvars:st = [(0, 0), (1, 0), (1, 1), (0, 1)] (interpolation = "vertex")
+            int[] faceVertexCounts = [4]
+            int[] faceVertexIndices = [0, 1, 2, 3]
+            point3f[] points = [(0,0,0), (1,0,0), (1,1,0), (0,1,0)]
+        }
+
+        def Mesh "PlaneWithOpacity" (
+            prepend apiSchemas = ["MaterialBindingAPI"]
+        )
+        {
+            rel material:binding = </Scene/Looks/MainMaterialWithOpacity>
+            float2[] primvars:st = [(0, 0), (1, 0), (1, 1), (0, 1)] (interpolation = "vertex")
+            int[] faceVertexCounts = [4]
+            int[] faceVertexIndices = [0, 1, 2, 3]
+            point3f[] points = [(1.1,0,0), (2.1,0,0), (2.1,1,0), (1.1,1,0)]
+        }
+    }
+}

test_assets/TextureFileFormatTests/all_files.usda

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+#usda 1.0
+(
+    defaultPrim = "Scene"
+    upAxis = "Y"
+    metersPerUnit = 1
+    customLayerData = {
+        string copyright = "Copyright 2024 Apple Inc. All rights reserved."
+    }
+)
+
+def Scope "Scene" (
+    kind = "component"
+)
+{
+    def Camera "main_cam"
+    {
+        double3 xformOp:translate = (1, 3, 25)
+        uniform token[] xformOpOrder = ["xformOp:translate"]
+    }
+
+    def Xform "jpeg" {
+        double3 xformOp:translate = (0, 0, 0)
+        uniform token[] xformOpOrder = ["xformOp:translate"]
+
+        over "jpeg_cmyk_8bit" (
+            references = [@./jpeg_cmyk_8-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 0, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+
+        over "jpeg_grayscale_8bit" (
+            references = [@./jpeg_grayscale_8-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 1.1, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+
+        over "jpeg_rgb_8bit" (
+            references = [@./jpeg_rgb_8-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 2.2, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+    }
+
+    def Xform "png" {
+        double3 xformOp:translate = (3, 0, 0)
+        uniform token[] xformOpOrder = ["xformOp:translate"]
+
+        over "png_grayscale_8bit" (
+            references = [@./png_grayscale_8-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 0, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+
+        over "png_grayscale_16bit" (
+            references = [@./png_grayscale_16-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 1.1, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+
+        over "png_rgb_8bit" (
+            references = [@./png_rgb_8-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 2.2, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+
+        over "png_rgb_16bit" (
+            references = [@./png_rgb_16-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 3.3, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+
+        over "png_rgb_32bit" (
+            references = [@./png_rgb_32-bit.usda@]
+        )
+        {
+            double3 xformOp:translate = (0, 4.4, 0)
+            uniform token[] xformOpOrder = ["xformOp:translate"]
+        }
+    }
+}

test_assets/TextureFileFormatTests/jpeg_cmyk_8-bit.jpg

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+#usda 1.0
+(
+    defaultPrim = "Scene"
+    upAxis = "Y"
+    metersPerUnit = 1
+    customLayerData = {
+        string copyright = "Copyright 2024 Apple Inc. All rights reserved."
+    }
+    subLayers = [
+        @_scene.usda@
+    ]
+)
+
+over "Scene"
+{
+    over "Looks"
+    {
+        over "MainMaterial"
+        {
+            over "Diffuse"
+            {
+                asset inputs:file = @jpeg_cmyk_8-bit.jpg@
+            }
+        }
+
+        over "MainMaterialWithOpacity"
+        {
+            over "Diffuse"
+            {
+                asset inputs:file = @jpeg_cmyk_8-bit.jpg@
+            }
+        }
+    }
+}

test_assets/TextureFileFormatTests/jpeg_cmyk_8-bit.usda

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+#usda 1.0
+(
+    defaultPrim = "Scene"
+    upAxis = "Y"
+    metersPerUnit = 1
+    customLayerData = {
+        string copyright = "Copyright 2024 Apple Inc. All rights reserved."
+    }
+    subLayers = [
+        @_scene.usda@
+    ]
+)
+
+over "Scene"
+{
+    over "Looks"
+    {
+        over "MainMaterial"
+        {
+            over "Diffuse"
+            {
+                asset inputs:file = @jpeg_grayscale_8-bit.jpg@
+            }
+        }
+
+        over "MainMaterialWithOpacity"
+        {
+            over "Diffuse"
+            {
+                asset inputs:file = @jpeg_grayscale_8-bit.jpg@
+            }
+        }
+    }
+}

test_assets/TextureFileFormatTests/jpeg_grayscale_8-bit.jpg

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+#usda 1.0
+(
+    defaultPrim = "Scene"
+    upAxis = "Y"
+    metersPerUnit = 1
+    customLayerData = {
+        string copyright = "Copyright 2024 Apple Inc. All rights reserved."
+    }
+    subLayers = [
+        @_scene.usda@
+    ]
+)
+
+over "Scene"
+{
+    over "Looks"
+    {
+        over "MainMaterial"
+        {
+            over "Diffuse"
+            {
+                asset inputs:file = @jpeg_rgb_8-bit.jpg@
+            }
+        }
+
+        over "MainMaterialWithOpacity"
+        {
+            over "Diffuse"
+            {
+                asset inputs:file = @jpeg_rgb_8-bit.jpg@
+            }
+        }
+    }
+}