Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/examples/dxPtexViewer/skyshader.hlsl

@@ -0,0 +1,63 @@
+//
+//   Copyright 2013 Nvidia
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+struct VS_InputVertex {
+    float3 position : POSITION0;
+    float2 texCoord : TEXCOORD0;
+};
+
+struct VS_OutputVertex {
+    float4 position : SV_POSITION0;
+    float2 texCoord : TEXCOORD0;
+};
+
+cbuffer Transform : register( b0 ) {
+    float4x4 ModelViewMatrix;
+};
+
+//--------------------------------------------------------------
+// sky vertex shader
+//--------------------------------------------------------------
+
+
+void vs_main(in VS_InputVertex input,
+             out VS_OutputVertex output) {
+
+    output.position = mul(ModelViewMatrix, float4(input.position,1));
+    output.texCoord = input.texCoord;
+}
+
+//--------------------------------------------------------------
+// sky pixel shader
+//--------------------------------------------------------------
+
+struct PS_InputVertex {
+    float4 position : SV_POSITION0;
+    float2 texCoord : TEXCOORD0;
+};
+
+Texture2D tx : register(t0);
+
+SamplerState sm : register(s0);
+
+float4
+gamma(float4 value, float g) {
+    return float4(pow(value.xyz, float3(g,g,g)), 1);
+}
+
+
+float4
+ps_main(in PS_InputVertex input) : SV_Target {
+
+    float4 tex = tx.Sample(sm, input.texCoord.xy);
+
+    //float4 outColor = gamma(tex,0.4545);
+    float4 outColor = tex;
+
+    return outColor;
+}
+