public static void GetBlendMode(ShaderGraph.SurfaceType surfaceType, AlphaMode alphaMode, ref Pass pass)
{
if (surfaceType == ShaderGraph.SurfaceType.Opaque)
{
pass.BlendOverride = "Blend One Zero, One Zero";
}
else
{
switch (alphaMode)
{
case AlphaMode.Alpha:
pass.BlendOverride = "Blend One OneMinusSrcAlpha, One OneMinusSrcAlpha";
break;
case AlphaMode.Additive:
pass.BlendOverride = "Blend One One, One One";
break;
case AlphaMode.Premultiply:
pass.BlendOverride = "Blend One OneMinusSrcAlpha, One OneMinusSrcAlpha";
break;
// This isn't supported in HDRP.
case AlphaMode.Multiply:
default:
pass.BlendOverride = "Blend One OneMinusSrcAlpha, One OneMinusSrcAlpha";
break;
}
}
}
public static void GetZWrite(ShaderGraph.SurfaceType surfaceType, ref Pass pass)
{
if (surfaceType == ShaderGraph.SurfaceType.Opaque)
{
pass.ZWriteOverride = "ZWrite On";
}
else
{
pass.ZWriteOverride = "ZWrite Off";
}
}
void AddTags(ShaderGenerator generator, string pipeline, HDRenderTypeTags renderType, ShaderGraph.SurfaceType surfaceType)
{
string queue = surfaceType == ShaderGraph.SurfaceType.Opaque ? "Geometry" : "Transparent";
ShaderStringBuilder builder = new ShaderStringBuilder();
builder.AppendLine("Tags");
using (builder.BlockScope())
{
builder.AppendLine("\"RenderPipeline\"=\"{0}\"", pipeline);
builder.AppendLine("\"RenderType\"=\"{0}\"", renderType);
builder.AppendLine("\"Queue\"=\"{0}\"", queue);
}
generator.AddShaderChunk(builder.ToString());
}
