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New template parser (#1532) 

* Converting template parser to a class to enable recursive $include in the near future

* New template parser working with $include, $splice
Including dependency tracking on $include

* Adding $buildType template command, and cleaning up the code around that.

* Bump major version number.  Using ShaderStringBuilder.

* Don't build slot list twice

* Fix view space position for FB case 1064118
/main
GitHub 6 年前
当前提交
6d4f0be7
共有 10 个文件被更改，包括 584 次插入 和 479 次删除
  1. 160
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/HDPBRPass.template
  2. 104
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/HDSubShaderUtilities.cs
  3. 161
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/HDUnlitPassForward.template
  4. 6
      com.unity.shadergraph/Editor/Data/Implementation/NodeUtils.cs
  5. 483
      com.unity.shadergraph/Editor/Data/Util/GraphUtil.cs
  6. 10
      com.unity.shadergraph/Editor/Data/Util/ShaderStringBuilder.cs
  7. 71
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/SharedCode.template.hlsl
  8. 9
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/SharedCode.template.hlsl.meta
  9. 50
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/VertexAnimation.template.hlsl
  10. 9
      com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/VertexAnimation.template.hlsl.meta

160
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/HDPBRPass.template
查看文件


Pass
{
// based on HDPBRPass.template
Name "${PassName}"
Tags { "LightMode" = "${LightMode}" }
Name "$splice(PassName)"
Tags { "LightMode" = "$splice(LightMode)" }
${Blending}
${Culling}
${ZTest}
${ZWrite}
${Stencil}
${ColorMask}
$splice(Blending)
$splice(Culling)
$splice(ZTest)
$splice(ZWrite)
$splice(Stencil)
$splice(ColorMask)
//-------------------------------------------------------------------------------------
// End Render Modes
//-------------------------------------------------------------------------------------

#pragma target 4.5
#pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
//#pragma enable_d3d11_debug_symbols
#pragma target 4.5
#pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
//#pragma enable_d3d11_debug_symbols
//-------------------------------------------------------------------------------------
// Variant Definitions (active field translations to HDRP defines)

//-------------------------------------------------------------------------------------
// Defines
//-------------------------------------------------------------------------------------
${Defines}
$splice(Defines)
// this translates the new dependency tracker into the old preprocessor definitions for the existing HDRP shader code
$AttributesMesh.normalOS: #define ATTRIBUTES_NEED_NORMAL

//-------------------------------------------------------------------------------------
// Interpolator Packing And Struct Declarations
//-------------------------------------------------------------------------------------
${InterpolatorPacking}
$buildType(AttributesMesh)
$buildType(VaryingsMeshToPS)
$buildType(VaryingsMeshToDS)
//-------------------------------------------------------------------------------------
// End Interpolator Packing And Struct Declarations
//-------------------------------------------------------------------------------------

//-------------------------------------------------------------------------------------
${Graph}
$splice(Graph)
#ifdef HAVE_MESH_MODIFICATION
// TODO: we should share this between template files somehow
VertexDescriptionInputs AttributesMeshToVertexDescriptionInputs(AttributesMesh input)
{
VertexDescriptionInputs output;
ZERO_INITIALIZE(VertexDescriptionInputs, output);
$VertexDescriptionInputs.ObjectSpaceNormal: output.ObjectSpaceNormal = input.normalOS;
$VertexDescriptionInputs.WorldSpaceNormal: output.WorldSpaceNormal = TransformObjectToWorldNormal(input.normalOS);
$VertexDescriptionInputs.ViewSpaceNormal: output.ViewSpaceNormal = TransformWorldToViewDir(output.WorldSpaceNormal);
$VertexDescriptionInputs.TangentSpaceNormal: output.TangentSpaceNormal = float3(0.0f, 0.0f, 1.0f);
$VertexDescriptionInputs.ObjectSpaceTangent: output.ObjectSpaceTangent = input.tangentOS;
$VertexDescriptionInputs.WorldSpaceTangent: output.WorldSpaceTangent = TransformObjectToWorldDir(input.tangentOS.xyz);
$VertexDescriptionInputs.ViewSpaceTangent: output.ViewSpaceTangent = TransformWorldToViewDir(output.WorldSpaceTangent);
$VertexDescriptionInputs.TangentSpaceTangent: output.TangentSpaceTangent = float3(1.0f, 0.0f, 0.0f);
$VertexDescriptionInputs.ObjectSpaceBiTangent: output.ObjectSpaceBiTangent = normalize(cross(input.normalOS, input.tangentOS) * (input.tangentOS.w > 0.0f ? 1.0f : -1.0f) * GetOddNegativeScale());
$VertexDescriptionInputs.WorldSpaceBiTangent: output.WorldSpaceBiTangent = TransformObjectToWorldDir(output.ObjectSpaceBiTangent);
$VertexDescriptionInputs.ViewSpaceBiTangent: output.ViewSpaceBiTangent = TransformWorldToViewDir(output.WorldSpaceBiTangent);
$VertexDescriptionInputs.TangentSpaceBiTangent: output.TangentSpaceBiTangent = float3(0.0f, 1.0f, 0.0f);
$VertexDescriptionInputs.ObjectSpacePosition: output.ObjectSpacePosition = input.positionOS;
$VertexDescriptionInputs.WorldSpacePosition: output.WorldSpacePosition = GetAbsolutePositionWS(TransformObjectToWorld(input.positionOS));
$VertexDescriptionInputs.ViewSpacePosition: output.ViewSpacePosition = TransformWorldToView(output.WorldSpacePosition);
$VertexDescriptionInputs.TangentSpacePosition: output.TangentSpacePosition = float3(0.0f, 0.0f, 0.0f);
$VertexDescriptionInputs.WorldSpaceViewDirection: output.WorldSpaceViewDirection = GetWorldSpaceNormalizeViewDir(output.WorldSpacePosition);
$VertexDescriptionInputs.ObjectSpaceViewDirection: output.ObjectSpaceViewDirection = TransformWorldToObjectDir(output.WorldSpaceViewDirection);
$VertexDescriptionInputs.ViewSpaceViewDirection: output.ViewSpaceViewDirection = TransformWorldToViewDir(output.WorldSpaceViewDirection);
$VertexDescriptionInputs.TangentSpaceViewDirection: float3x3 tangentSpaceTransform = float3x3(output.WorldSpaceTangent,output.WorldSpaceBiTangent,output.WorldSpaceNormal);
$VertexDescriptionInputs.TangentSpaceViewDirection: output.TangentSpaceViewDirection = mul(tangentSpaceTransform, output.WorldSpaceViewDirection);
$VertexDescriptionInputs.ScreenPosition: output.ScreenPosition = ComputeScreenPos(TransformWorldToHClip(output.WorldSpacePosition), _ProjectionParams.x);
$VertexDescriptionInputs.uv0: output.uv0 = float4(input.uv0, 0.0f, 0.0f);
$VertexDescriptionInputs.uv1: output.uv1 = float4(input.uv1, 0.0f, 0.0f);
$VertexDescriptionInputs.uv2: output.uv2 = float4(input.uv2, 0.0f, 0.0f);
$VertexDescriptionInputs.uv3: output.uv3 = float4(input.uv3, 0.0f, 0.0f);
$VertexDescriptionInputs.VertexColor: output.VertexColor = input.color;
return output;
}
AttributesMesh ApplyMeshModification(AttributesMesh input)
{
// build graph inputs
VertexDescriptionInputs vertexDescriptionInputs = AttributesMeshToVertexDescriptionInputs(input);
// evaluate vertex graph
VertexDescription vertexDescription = VertexDescriptionFunction(vertexDescriptionInputs);
// copy graph output to the results
$VertexDescription.Position: input.positionOS = vertexDescription.Position;
return input;
}
#endif // HAVE_MESH_MODIFICATION
// TODO: Do we want to build include functionality for sharing these preprocessed functions across templates?
FragInputs BuildFragInputs(VaryingsMeshToPS input)
{
FragInputs output;
ZERO_INITIALIZE(FragInputs, output);
// Init to some default value to make the computer quiet (else it output 'divide by zero' warning even if value is not used).
// TODO: this is a really poor workaround, but the variable is used in a bunch of places
// to compute normals which are then passed on elsewhere to compute other values...
output.worldToTangent = k_identity3x3;
output.positionSS = input.positionCS; // input.positionCS is SV_Position
$FragInputs.positionRWS: output.positionRWS = input.positionRWS;
$FragInputs.worldToTangent: output.worldToTangent = BuildWorldToTangent(input.tangentWS, input.normalWS);
$FragInputs.texCoord0: output.texCoord0 = input.texCoord0;
$FragInputs.texCoord1: output.texCoord1 = input.texCoord1;
$FragInputs.texCoord2: output.texCoord2 = input.texCoord2;
$FragInputs.texCoord3: output.texCoord3 = input.texCoord3;
$FragInputs.color: output.color = input.color;
#if SHADER_STAGE_FRAGMENT
$FragInputs.isFrontFace: output.isFrontFace = IS_FRONT_VFACE(input.cullFace, true, false); // TODO: SHADER_STAGE_FRAGMENT only
$FragInputs.isFrontFace: // Handle handness of the view matrix (In Unity view matrix default to a determinant of -1)
$FragInputs.isFrontFace: // when we render a cubemap the view matrix handness is flipped (due to convention used for cubemap) we have a determinant of +1
$FragInputs.isFrontFace: output.isFrontFace = _DetViewMatrix < 0.0 ? output.isFrontFace : !output.isFrontFace;
#endif // SHADER_STAGE_FRAGMENT
return output;
}
SurfaceDescriptionInputs FragInputsToSurfaceDescriptionInputs(FragInputs input, float3 viewWS)
{
SurfaceDescriptionInputs output;
ZERO_INITIALIZE(SurfaceDescriptionInputs, output);
$SurfaceDescriptionInputs.WorldSpaceNormal: output.WorldSpaceNormal = normalize(input.worldToTangent[2].xyz);
$SurfaceDescriptionInputs.ObjectSpaceNormal: output.ObjectSpaceNormal = mul(output.WorldSpaceNormal, (float3x3) UNITY_MATRIX_M); // transposed multiplication by inverse matrix to handle normal scale
$SurfaceDescriptionInputs.ViewSpaceNormal: output.ViewSpaceNormal = mul(output.WorldSpaceNormal, (float3x3) UNITY_MATRIX_I_V); // transposed multiplication by inverse matrix to handle normal scale
$SurfaceDescriptionInputs.TangentSpaceNormal: output.TangentSpaceNormal = float3(0.0f, 0.0f, 1.0f);
$SurfaceDescriptionInputs.WorldSpaceTangent: output.WorldSpaceTangent = input.worldToTangent[0].xyz;
$SurfaceDescriptionInputs.ObjectSpaceTangent: output.ObjectSpaceTangent = TransformWorldToObjectDir(output.WorldSpaceTangent);
$SurfaceDescriptionInputs.ViewSpaceTangent: output.ViewSpaceTangent = TransformWorldToViewDir(output.WorldSpaceTangent);
$SurfaceDescriptionInputs.TangentSpaceTangent: output.TangentSpaceTangent = float3(1.0f, 0.0f, 0.0f);
$SurfaceDescriptionInputs.WorldSpaceBiTangent: output.WorldSpaceBiTangent = input.worldToTangent[1].xyz;
$SurfaceDescriptionInputs.ObjectSpaceBiTangent: output.ObjectSpaceBiTangent = TransformWorldToObjectDir(output.WorldSpaceBiTangent);
$SurfaceDescriptionInputs.ViewSpaceBiTangent: output.ViewSpaceBiTangent = TransformWorldToViewDir(output.WorldSpaceBiTangent);
$SurfaceDescriptionInputs.TangentSpaceBiTangent: output.TangentSpaceBiTangent = float3(0.0f, 1.0f, 0.0f);
$SurfaceDescriptionInputs.WorldSpaceViewDirection: output.WorldSpaceViewDirection = normalize(viewWS);
$SurfaceDescriptionInputs.ObjectSpaceViewDirection: output.ObjectSpaceViewDirection = TransformWorldToObjectDir(output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.ViewSpaceViewDirection: output.ViewSpaceViewDirection = TransformWorldToViewDir(output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.TangentSpaceViewDirection: float3x3 tangentSpaceTransform = float3x3(output.WorldSpaceTangent,output.WorldSpaceBiTangent,output.WorldSpaceNormal);
$SurfaceDescriptionInputs.TangentSpaceViewDirection: output.TangentSpaceViewDirection = mul(tangentSpaceTransform, output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.WorldSpacePosition: output.WorldSpacePosition = GetAbsolutePositionWS(input.positionRWS);
$SurfaceDescriptionInputs.ObjectSpacePosition: output.ObjectSpacePosition = TransformWorldToObject(input.positionRWS);
$SurfaceDescriptionInputs.ViewSpacePosition: float4 posViewSpace = TransformWorldToView(input.positionRWS);
$SurfaceDescriptionInputs.ViewSpacePosition: output.ViewSpacePosition = posViewSpace.xyz / posViewSpace.w;
$SurfaceDescriptionInputs.TangentSpacePosition: output.TangentSpacePosition = float3(0.0f, 0.0f, 0.0f);
$SurfaceDescriptionInputs.ScreenPosition: output.ScreenPosition = ComputeScreenPos(TransformWorldToHClip(input.positionRWS), _ProjectionParams.x);
$SurfaceDescriptionInputs.uv0: output.uv0 = float4(input.texCoord0, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv1: output.uv1 = float4(input.texCoord1, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv2: output.uv2 = float4(input.texCoord2, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv3: output.uv3 = float4(input.texCoord3, 0.0f, 0.0f);
$features.modifyMesh: $include("VertexAnimation.template.hlsl")
$SurfaceDescriptionInputs.VertexColor: output.VertexColor = input.color;
$SurfaceDescriptionInputs.FaceSign: output.FaceSign = input.isFrontFace;
$include("SharedCode.template.hlsl")
return output;
}
// existing HDRP code uses the combined function to go directly from packed to frag inputs
FragInputs UnpackVaryingsMeshToFragInputs(PackedVaryingsMeshToPS input)
{
VaryingsMeshToPS unpacked= UnpackVaryingsMeshToPS(input);
return BuildFragInputs(unpacked);
}
void BuildSurfaceData(FragInputs fragInputs, SurfaceDescription surfaceDescription, float3 V, out SurfaceData surfaceData)
{

//-------------------------------------------------------------------------------------
// Pass Includes
//-------------------------------------------------------------------------------------
${Includes}
$splice(Includes)
//-------------------------------------------------------------------------------------
// End Pass Includes
//-------------------------------------------------------------------------------------

104
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/HDSubShaderUtilities.cs
查看文件


namespace UnityEditor.Experimental.Rendering.HDPipeline
{
public static class HDRPShaderStructs
internal static class HDRPShaderStructs
struct AttributesMesh
internal struct AttributesMesh
{
[Semantic("POSITION")] Vector3 positionOS;
[Semantic("NORMAL")][Optional] Vector3 normalOS;

[Semantic("COLOR")][Optional] Vector4 color;
};
struct VaryingsMeshToPS
[InterpolatorPack]
internal struct VaryingsMeshToPS
{
[Semantic("SV_Position")] Vector4 positionCS;
[Optional] Vector3 positionRWS;

};
};
struct VaryingsMeshToDS
[InterpolatorPack]
internal struct VaryingsMeshToDS
{
Vector3 positionRWS;
Vector3 normalWS;

};
};
struct FragInputs
internal struct FragInputs
{
public static Dependency[] dependencies = new Dependency[]
{

};
// this describes the input to the pixel shader graph eval
public struct SurfaceDescriptionInputs
internal struct SurfaceDescriptionInputs
{
[Optional] Vector3 ObjectSpaceNormal;
[Optional] Vector3 ViewSpaceNormal;

};
// this describes the input to the pixel shader graph eval
public struct VertexDescriptionInputs
internal struct VertexDescriptionInputs
{
[Optional] Vector3 ObjectSpaceNormal;
[Optional] Vector3 ViewSpaceNormal;

}
}
}
public static void Generate(
ShaderGenerator codeResult,
HashSet<string> activeFields)
{
// propagate requirements using dependencies
{
ShaderSpliceUtil.ApplyDependencies(
activeFields,
new List<Dependency[]>()
{
FragInputs.dependencies,
VaryingsMeshToPS.standardDependencies,
SurfaceDescriptionInputs.dependencies,
VertexDescriptionInputs.dependencies
});
}
// generate code based on requirements
ShaderSpliceUtil.BuildType(typeof(AttributesMesh), activeFields, codeResult);
ShaderSpliceUtil.BuildType(typeof(VaryingsMeshToPS), activeFields, codeResult);
ShaderSpliceUtil.BuildType(typeof(VaryingsMeshToDS), activeFields, codeResult);
ShaderSpliceUtil.BuildPackedType(typeof(VaryingsMeshToPS), activeFields, codeResult);
ShaderSpliceUtil.BuildPackedType(typeof(VaryingsMeshToDS), activeFields, codeResult);
}
};
public struct Pass

{
public static bool GenerateShaderPass(AbstractMaterialNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions, HashSet<string> activeFields, ShaderGenerator result, List<string> sourceAssetDependencyPaths)
{
var templateLocation = Path.Combine(Path.Combine(Path.Combine(HDEditorUtils.GetHDRenderPipelinePath(), "Editor"), "ShaderGraph"), pass.TemplateName);
string templatePath = Path.Combine(Path.Combine(HDEditorUtils.GetHDRenderPipelinePath(), "Editor"), "ShaderGraph");
string templateLocation = Path.Combine(templatePath, pass.TemplateName);
if (!File.Exists(templateLocation))
{
// TODO: produce error here

bool debugOutput = false;
if (sourceAssetDependencyPaths != null)
sourceAssetDependencyPaths.Add(templateLocation);
// grab all of the active nodes (for pixel and vertex graphs)
var vertexNodes = ListPool<INode>.Get();

HDRPShaderStructs.AddRequiredFields(pass.RequiredFields, activeFields);
// apply dependencies to the active fields, and build interpolators (TODO: split this function)
var packedInterpolatorCode = new ShaderGenerator();
HDRPShaderStructs.Generate(
packedInterpolatorCode,
activeFields);
// propagate active field requirements using dependencies
ShaderSpliceUtil.ApplyDependencies(
activeFields,
new List<Dependency[]>()
{
HDRPShaderStructs.FragInputs.dependencies,
HDRPShaderStructs.VaryingsMeshToPS.standardDependencies,
HDRPShaderStructs.SurfaceDescriptionInputs.dependencies,
HDRPShaderStructs.VertexDescriptionInputs.dependencies
});
// debug output all active fields
var interpolatorDefines = new ShaderGenerator();

// build the hash table of all named fragments TODO: could make this Dictionary<string, ShaderGenerator / string> ?
Dictionary<string, string> namedFragments = new Dictionary<string, string>();
namedFragments.Add("${Defines}", defines.GetShaderString(2, false));
namedFragments.Add("${Graph}", graph.GetShaderString(2, false));
namedFragments.Add("${LightMode}", pass.LightMode);
namedFragments.Add("${PassName}", pass.Name);
namedFragments.Add("${Includes}", shaderPassIncludes.GetShaderString(2, false));
namedFragments.Add("${InterpolatorPacking}", packedInterpolatorCode.GetShaderString(2, false));
namedFragments.Add("${Blending}", blendCode.ToString());
namedFragments.Add("${Culling}", cullCode.ToString());
namedFragments.Add("${ZTest}", zTestCode.ToString());
namedFragments.Add("${ZWrite}", zWriteCode.ToString());
namedFragments.Add("${Stencil}", stencilCode.ToString());
namedFragments.Add("${ColorMask}", colorMaskCode.ToString());
namedFragments.Add("${LOD}", materialOptions.lod.ToString());
namedFragments.Add("Defines", defines.GetShaderString(2, false));
namedFragments.Add("Graph", graph.GetShaderString(2, false));
namedFragments.Add("LightMode", pass.LightMode);
namedFragments.Add("PassName", pass.Name);
namedFragments.Add("Includes", shaderPassIncludes.GetShaderString(2, false));
namedFragments.Add("Blending", blendCode.ToString());
namedFragments.Add("Culling", cullCode.ToString());
namedFragments.Add("ZTest", zTestCode.ToString());
namedFragments.Add("ZWrite", zWriteCode.ToString());
namedFragments.Add("Stencil", stencilCode.ToString());
namedFragments.Add("ColorMask", colorMaskCode.ToString());
namedFragments.Add("LOD", materialOptions.lod.ToString());
// this is the format string for building the 'C# qualified assembly type names' for $buildType() commands
string buildTypeAssemblyNameFormat = "UnityEditor.Experimental.Rendering.HDPipeline.HDRPShaderStructs+{0}, " + typeof(HDSubShaderUtilities).Assembly.FullName.ToString();
// process the template to generate the shader code for this pass
ShaderSpliceUtil.TemplatePreprocessor templatePreprocessor =
new ShaderSpliceUtil.TemplatePreprocessor(activeFields, namedFragments, debugOutput, templatePath, sourceAssetDependencyPaths, buildTypeAssemblyNameFormat);
// process the template to generate the shader code for this pass TODO: could make this a shared function
string[] templateLines = File.ReadAllLines(templateLocation);
System.Text.StringBuilder builder = new System.Text.StringBuilder();
foreach (string line in templateLines)
{
ShaderSpliceUtil.PreprocessShaderCode(line, activeFields, namedFragments, builder, debugOutput);
}
templatePreprocessor.ProcessTemplateFile(templateLocation);
result.AddShaderChunk(builder.ToString(), false);
result.AddShaderChunk(templatePreprocessor.GetShaderCode().ToString(), false);
return true;
}

161
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/HDUnlitPassForward.template
查看文件


Pass
{
// based on HDUnlitPassForward.template
Name "${PassName}"
Tags { "LightMode" = "${LightMode}" }
Name "$splice(PassName)"
Tags { "LightMode" = "$splice(LightMode)" }
${Blending}
${Culling}
${ZTest}
${ZWrite}
${Stencil}
${ColorMask}
$splice(Blending)
$splice(Culling)
$splice(ZTest)
$splice(ZWrite)
$splice(Stencil)
$splice(ColorMask)
//-------------------------------------------------------------------------------------
// End Render Modes
//-------------------------------------------------------------------------------------

#pragma target 4.5
#pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
//#pragma enable_d3d11_debug_symbols
#pragma target 4.5
#pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
//#pragma enable_d3d11_debug_symbols
//-------------------------------------------------------------------------------------
// Variant Definitions (active field translations to HDRP defines)

//-------------------------------------------------------------------------------------
// Defines
//-------------------------------------------------------------------------------------
${Defines}
$splice(Defines)
// this translates the new dependency tracker into the old preprocessor definitions for the existing HDRP shader code
$AttributesMesh.normalOS: #define ATTRIBUTES_NEED_NORMAL

//-------------------------------------------------------------------------------------
// Interpolator Packing And Struct Declarations
//-------------------------------------------------------------------------------------
${InterpolatorPacking}
$buildType(AttributesMesh)
$buildType(VaryingsMeshToPS)
$buildType(VaryingsMeshToDS)
//-------------------------------------------------------------------------------------
// End Interpolator Packing And Struct Declarations
//-------------------------------------------------------------------------------------

//-------------------------------------------------------------------------------------
${Graph}
$splice(Graph)
#ifdef HAVE_MESH_MODIFICATION
// TODO: we should share this between template files somehow
VertexDescriptionInputs AttributesMeshToVertexDescriptionInputs(AttributesMesh input)
{
VertexDescriptionInputs output;
ZERO_INITIALIZE(VertexDescriptionInputs, output);
$features.modifyMesh: $include("VertexAnimation.template.hlsl")
$VertexDescriptionInputs.ObjectSpaceNormal: output.ObjectSpaceNormal = input.normalOS;
$VertexDescriptionInputs.WorldSpaceNormal: output.WorldSpaceNormal = TransformObjectToWorldNormal(input.normalOS);
$VertexDescriptionInputs.ViewSpaceNormal: output.ViewSpaceNormal = TransformWorldToViewDir(output.WorldSpaceNormal);
$VertexDescriptionInputs.TangentSpaceNormal: output.TangentSpaceNormal = float3(0.0f, 0.0f, 1.0f);
$VertexDescriptionInputs.ObjectSpaceTangent: output.ObjectSpaceTangent = input.tangentOS;
$VertexDescriptionInputs.WorldSpaceTangent: output.WorldSpaceTangent = TransformObjectToWorldDir(input.tangentOS.xyz);
$VertexDescriptionInputs.ViewSpaceTangent: output.ViewSpaceTangent = TransformWorldToViewDir(output.WorldSpaceTangent);
$VertexDescriptionInputs.TangentSpaceTangent: output.TangentSpaceTangent = float3(1.0f, 0.0f, 0.0f);
$VertexDescriptionInputs.ObjectSpaceBiTangent: output.ObjectSpaceBiTangent = normalize(cross(input.normalOS, input.tangentOS) * (input.tangentOS.w > 0.0f ? 1.0f : -1.0f) * GetOddNegativeScale());
$VertexDescriptionInputs.WorldSpaceBiTangent: output.WorldSpaceBiTangent = TransformObjectToWorldDir(output.ObjectSpaceBiTangent);
$VertexDescriptionInputs.ViewSpaceBiTangent: output.ViewSpaceBiTangent = TransformWorldToViewDir(output.WorldSpaceBiTangent);
$VertexDescriptionInputs.TangentSpaceBiTangent: output.TangentSpaceBiTangent = float3(0.0f, 1.0f, 0.0f);
$VertexDescriptionInputs.ObjectSpacePosition: output.ObjectSpacePosition = input.positionOS;
$VertexDescriptionInputs.WorldSpacePosition: output.WorldSpacePosition = GetAbsolutePositionWS(TransformObjectToWorld(input.positionOS));
$VertexDescriptionInputs.ViewSpacePosition: output.ViewSpacePosition = TransformWorldToView(output.WorldSpacePosition);
$VertexDescriptionInputs.TangentSpacePosition: output.TangentSpacePosition = float3(0.0f, 0.0f, 0.0f);
$VertexDescriptionInputs.WorldSpaceViewDirection: output.WorldSpaceViewDirection = GetWorldSpaceNormalizeViewDir(output.WorldSpacePosition);
$VertexDescriptionInputs.ObjectSpaceViewDirection: output.ObjectSpaceViewDirection = TransformWorldToObjectDir(output.WorldSpaceViewDirection);
$VertexDescriptionInputs.ViewSpaceViewDirection: output.ViewSpaceViewDirection = TransformWorldToViewDir(output.WorldSpaceViewDirection);
$VertexDescriptionInputs.TangentSpaceViewDirection: float3x3 tangentSpaceTransform = float3x3(output.WorldSpaceTangent,output.WorldSpaceBiTangent,output.WorldSpaceNormal);
$VertexDescriptionInputs.TangentSpaceViewDirection: output.TangentSpaceViewDirection = mul(tangentSpaceTransform, output.WorldSpaceViewDirection);
$VertexDescriptionInputs.ScreenPosition: output.ScreenPosition = ComputeScreenPos(TransformWorldToHClip(output.WorldSpacePosition), _ProjectionParams.x);
$VertexDescriptionInputs.uv0: output.uv0 = float4(input.uv0, 0.0f, 0.0f);
$VertexDescriptionInputs.uv1: output.uv1 = float4(input.uv1, 0.0f, 0.0f);
$VertexDescriptionInputs.uv2: output.uv2 = float4(input.uv2, 0.0f, 0.0f);
$VertexDescriptionInputs.uv3: output.uv3 = float4(input.uv3, 0.0f, 0.0f);
$VertexDescriptionInputs.VertexColor: output.VertexColor = input.color;
$include("SharedCode.template.hlsl")
return output;
}
AttributesMesh ApplyMeshModification(AttributesMesh input)
{
// build graph inputs
VertexDescriptionInputs vertexDescriptionInputs = AttributesMeshToVertexDescriptionInputs(input);
// evaluate vertex graph
VertexDescription vertexDescription = VertexDescriptionFunction(vertexDescriptionInputs);
// copy graph output to the results
$VertexDescription.Position: input.positionOS = vertexDescription.Position;
return input;
}
#endif // HAVE_MESH_MODIFICATION
// TODO: Do we want to build include functionality for sharing these preprocessed functions across templates?
FragInputs BuildFragInputs(VaryingsMeshToPS input)
{
FragInputs output;
ZERO_INITIALIZE(FragInputs, output);
// Init to some default value to make the computer quiet (else it output 'divide by zero' warning even if value is not used).
// TODO: this is a really poor workaround, but the variable is used in a bunch of places
// to compute normals which are then passed on elsewhere to compute other values...
output.worldToTangent = k_identity3x3;
output.positionSS = input.positionCS; // input.positionCS is SV_Position
$FragInputs.positionRWS: output.positionRWS = input.positionRWS;
$FragInputs.worldToTangent: output.worldToTangent = BuildWorldToTangent(input.tangentWS, input.normalWS);
$FragInputs.texCoord0: output.texCoord0 = input.texCoord0;
$FragInputs.texCoord1: output.texCoord1 = input.texCoord1;
$FragInputs.texCoord2: output.texCoord2 = input.texCoord2;
$FragInputs.texCoord3: output.texCoord3 = input.texCoord3;
$FragInputs.color: output.color = input.color;
#if SHADER_STAGE_FRAGMENT
$FragInputs.isFrontFace: output.isFrontFace = IS_FRONT_VFACE(input.cullFace, true, false); // TODO: SHADER_STAGE_FRAGMENT only
$FragInputs.isFrontFace: // Handle handness of the view matrix (In Unity view matrix default to a determinant of -1)
$FragInputs.isFrontFace: // when we render a cubemap the view matrix handness is flipped (due to convention used for cubemap) we have a determinant of +1
$FragInputs.isFrontFace: output.isFrontFace = _DetViewMatrix < 0.0 ? output.isFrontFace : !output.isFrontFace;
#endif // SHADER_STAGE_FRAGMENT
return output;
}
SurfaceDescriptionInputs FragInputsToSurfaceDescriptionInputs(FragInputs input, float3 viewWS)
{
SurfaceDescriptionInputs output;
ZERO_INITIALIZE(SurfaceDescriptionInputs, output);
$SurfaceDescriptionInputs.WorldSpaceNormal: output.WorldSpaceNormal = normalize(input.worldToTangent[2].xyz);
$SurfaceDescriptionInputs.ObjectSpaceNormal: output.ObjectSpaceNormal = mul(output.WorldSpaceNormal, (float3x3) UNITY_MATRIX_M); // transposed multiplication by inverse matrix to handle normal scale
$SurfaceDescriptionInputs.ViewSpaceNormal: output.ViewSpaceNormal = mul(output.WorldSpaceNormal, (float3x3) UNITY_MATRIX_I_V); // transposed multiplication by inverse matrix to handle normal scale
$SurfaceDescriptionInputs.TangentSpaceNormal: output.TangentSpaceNormal = float3(0.0f, 0.0f, 1.0f);
$SurfaceDescriptionInputs.WorldSpaceTangent: output.WorldSpaceTangent = input.worldToTangent[0].xyz;
$SurfaceDescriptionInputs.ObjectSpaceTangent: output.ObjectSpaceTangent = TransformWorldToObjectDir(output.WorldSpaceTangent);
$SurfaceDescriptionInputs.ViewSpaceTangent: output.ViewSpaceTangent = TransformWorldToViewDir(output.WorldSpaceTangent);
$SurfaceDescriptionInputs.TangentSpaceTangent: output.TangentSpaceTangent = float3(1.0f, 0.0f, 0.0f);
$SurfaceDescriptionInputs.WorldSpaceBiTangent: output.WorldSpaceBiTangent = input.worldToTangent[1].xyz;
$SurfaceDescriptionInputs.ObjectSpaceBiTangent: output.ObjectSpaceBiTangent = TransformWorldToObjectDir(output.WorldSpaceBiTangent);
$SurfaceDescriptionInputs.ViewSpaceBiTangent: output.ViewSpaceBiTangent = TransformWorldToViewDir(output.WorldSpaceBiTangent);
$SurfaceDescriptionInputs.TangentSpaceBiTangent: output.TangentSpaceBiTangent = float3(0.0f, 1.0f, 0.0f);
$SurfaceDescriptionInputs.WorldSpaceViewDirection: output.WorldSpaceViewDirection = normalize(viewWS);
$SurfaceDescriptionInputs.ObjectSpaceViewDirection: output.ObjectSpaceViewDirection = TransformWorldToObjectDir(output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.ViewSpaceViewDirection: output.ViewSpaceViewDirection = TransformWorldToViewDir(output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.TangentSpaceViewDirection: float3x3 tangentSpaceTransform = float3x3(output.WorldSpaceTangent,output.WorldSpaceBiTangent,output.WorldSpaceNormal);
$SurfaceDescriptionInputs.TangentSpaceViewDirection: output.TangentSpaceViewDirection = mul(tangentSpaceTransform, output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.WorldSpacePosition: output.WorldSpacePosition = GetAbsolutePositionWS(input.positionRWS);
$SurfaceDescriptionInputs.ObjectSpacePosition: output.ObjectSpacePosition = TransformWorldToObject(input.positionRWS);
$SurfaceDescriptionInputs.ViewSpacePosition: float4 posViewSpace = TransformWorldToView(input.positionRWS);
$SurfaceDescriptionInputs.ViewSpacePosition: output.ViewSpacePosition = posViewSpace.xyz / posViewSpace.w;
$SurfaceDescriptionInputs.TangentSpacePosition: output.TangentSpacePosition = float3(0.0f, 0.0f, 0.0f);
$SurfaceDescriptionInputs.ScreenPosition: output.ScreenPosition = ComputeScreenPos(TransformWorldToHClip(input.positionRWS), _ProjectionParams.x);
$SurfaceDescriptionInputs.uv0: output.uv0 = float4(input.texCoord0, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv1: output.uv1 = float4(input.texCoord1, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv2: output.uv2 = float4(input.texCoord2, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv3: output.uv3 = float4(input.texCoord3, 0.0f, 0.0f);
$SurfaceDescriptionInputs.VertexColor: output.VertexColor = input.color;
$SurfaceDescriptionInputs.FaceSign: output.FaceSign = input.isFrontFace;
return output;
}
// existing HDRP code uses the combined function to go directly from packed to frag inputs
FragInputs UnpackVaryingsMeshToFragInputs(PackedVaryingsMeshToPS input)
{
VaryingsMeshToPS unpacked= UnpackVaryingsMeshToPS(input);
return BuildFragInputs(unpacked);
}
void BuildSurfaceData(FragInputs fragInputs, SurfaceDescription surfaceDescription, float3 V, out SurfaceData surfaceData)
{

//-------------------------------------------------------------------------------------
// Pass Includes
//-------------------------------------------------------------------------------------
${Includes}
$splice(Includes)
//-------------------------------------------------------------------------------------
// End Pass Includes
//-------------------------------------------------------------------------------------

6
com.unity.shadergraph/Editor/Data/Implementation/NodeUtils.cs
查看文件


if (nodeList.Contains(node))
return;
var ids = node.GetInputSlots<ISlot>().Select(x => x.id);
if (slotIds != null)
IEnumerable<int> ids;
if (slotIds == null)
ids = node.GetInputSlots<ISlot>().Select(x => x.id);
else
ids = node.GetInputSlots<ISlot>().Where(x => slotIds.Contains(x.id)).Select(x => x.id);
foreach (var slot in ids)

483
com.unity.shadergraph/Editor/Data/Util/GraphUtil.cs
查看文件


}
};
[System.AttributeUsage(System.AttributeTargets.Struct)]
public class InterpolatorPack : System.Attribute
{
public InterpolatorPack()
{
}
}
// attribute used to flag a field as needing an HLSL semantic applied
// i.e. float3 position : POSITION;
// ^ semantic

}
result.Deindent();
result.AddShaderChunk("};");
object[] packAttributes = t.GetCustomAttributes(typeof(InterpolatorPack), false);
if (packAttributes.Length > 0)
{
BuildPackedType(t, activeFields, result);
}
}
public static void BuildPackedType(System.Type unpacked, HashSet<string> activeFields, ShaderGenerator result)

result.AddGenerator(unpacker);
}
// an easier to use version of substring Append() -- explicit inclusion on each end, and checks for positive length
private static void AppendSubstring(System.Text.StringBuilder target, string str, int start, bool includeStart, int end, bool includeEnd)
{
if (!includeStart)
{
start++;
}
if (!includeEnd)
{
end--;
}
int count = end - start + 1;
if (count > 0)
{
target.Append(str, start, count);
}
}
// returns the offset of the first non-whitespace character, in the range [start, end] inclusive ... will return end if none found
private static int SkipWhitespace(string str, int start, int end)
{

return index;
}
public static System.Text.StringBuilder PreprocessShaderCode(string code, HashSet<string> activeFields, Dictionary<string, string> namedFragments, System.Text.StringBuilder result, bool debugOutput)
public class TemplatePreprocessor
if (result == null)
// inputs
HashSet<string> activeFields;
Dictionary<string, string> namedFragments;
string templatePath;
bool debugOutput;
string buildTypeAssemblyNameFormat;
// intermediates
HashSet<string> includedFiles;
// outputs
ShaderStringBuilder result;
List<string> sourceAssetDependencyPaths;
public TemplatePreprocessor(HashSet<string> activeFields, Dictionary<string, string> namedFragments, bool debugOutput, string templatePath, List<string> sourceAssetDependencyPaths, string buildTypeAssemblyNameFormat, ShaderStringBuilder outShaderCodeResult = null)
{
this.activeFields = activeFields;
this.namedFragments = namedFragments;
this.debugOutput = debugOutput;
this.templatePath = templatePath;
this.sourceAssetDependencyPaths = sourceAssetDependencyPaths;
this.buildTypeAssemblyNameFormat = buildTypeAssemblyNameFormat;
this.result = outShaderCodeResult ?? new ShaderStringBuilder();
includedFiles = new HashSet<string>();
}
public ShaderStringBuilder GetShaderCode()
result = new System.Text.StringBuilder();
return result;
int cur = 0;
int end = code.Length;
bool skipEndln = false;
public void ProcessTemplateFile(string filePath)
{
if (File.Exists(filePath) &&
!includedFiles.Contains(filePath))
{
includedFiles.Add(filePath);
while (cur < end)
if (sourceAssetDependencyPaths != null)
sourceAssetDependencyPaths.Add(filePath);
string[] templateLines = File.ReadAllLines(filePath);
foreach (string line in templateLines)
{
ProcessTemplateLine(line, 0, line.Length);
}
}
}
private struct Token
int dollar = code.IndexOf('$', cur);
if (dollar < 0)
public string s;
public int start;
public int end;
public Token(string s, int start, int end)
// no escape sequence found -- just append the remaining part of the code verbatim
AppendSubstring(result, code, cur, true, end, false);
cur = end;
this.s = s;
this.start = start;
this.end = end;
else
public static Token Invalid()
// found $ escape sequence
return new Token(null, 0, 0);
}
// find the end of the line (or if none found, the end of the code)
int endln = code.IndexOf('\n', dollar + 1);
if (endln < 0)
public bool IsValid()
{
return (s != null);
}
public bool Is(string other)
{
int len = end - start;
return (other.Length == len) && (0 == string.Compare(s, start, other, 0, len));
}
public string GetString()
{
int len = end - start;
if (len > 0)
endln = end;
return s.Substring(start, end - start);
return null;
}
}
// see if the character after '$' is '{', which would indicate a named fragment splice
if ((dollar + 1 < endln) && (code[dollar + 1] == '{'))
public void ProcessTemplateLine(string line, int start, int end)
{
bool appendEndln = true;
int cur = start;
while (cur < end)
{
// find an escape code '$'
int dollar = line.IndexOf('$', cur, end - cur);
if (dollar < 0)
{
// no escape code found in the remaining code -- just append the rest verbatim
AppendSubstring(line, cur, true, end, false);
break;
}
else
// named fragment splice
// search for the '}' within the current line
int curlystart = dollar + 1;
int curlyend = -1;
if (endln > curlystart + 1)
// found $ escape sequence
Token command = ParseIdentifier(line, dollar+1, end);
if (!command.IsValid())
curlyend = code.IndexOf('}', curlystart + 1, endln - curlystart - 1);
Error("ERROR: $ must be followed by a command string (if, splice, or include)", line, dollar+1);
break;
int nameLength = curlyend - dollar + 1;
if ((curlyend < 0) || (nameLength <= 0))
else
// no } found, or zero length name
// append everything before the beginning of the escape sequence
AppendSubstring(result, code, cur, true, dollar, false);
if (curlyend < 0)
if (command.Is("include"))
result.Append("// ERROR: unterminated escape sequence ('${' and '}' must be matched)\n");
ProcessIncludeCommand(command, end);
break; // include command always ignores the rest of the line, error or not
else
else if (command.Is("splice"))
result.Append("// ERROR: name '${}' is empty\n");
if (!ProcessSpliceCommand(command, end, ref cur))
{
// error, skip the rest of the line
break;
}
// append the line (commented out) for context
result.Append("// ");
AppendSubstring(result, code, dollar, true, endln, false);
result.Append("\n");
}
else
{
// } found!
// ugh, this probably allocates memory -- wish we could do the name lookup direct from a substring
string name = code.Substring(dollar, nameLength);
// append everything before the beginning of the escape sequence
AppendSubstring(result, code, cur, true, dollar, false);
string fragment;
if ((namedFragments != null) && namedFragments.TryGetValue(name, out fragment))
else if (command.Is("buildType"))
// splice the fragment
result.Append(fragment);
// advance to just after the '}'
cur = curlyend + 1;
ProcessBuildTypeCommand(command, end);
break; // buildType command always ignores the rest of the line, error or not
// no named fragment found
result.AppendFormat("/* Could not find named fragment '{0}' */", name);
cur = curlyend + 1;
// let's see if it is a predicate
Token predicate = ParseUntil(line, dollar + 1, end, ':');
if (!predicate.IsValid())
{
Error("ERROR: unrecognized command: " + command.GetString(), line, command.start);
break;
}
else
{
if (!ProcessPredicate(predicate, end, ref cur, ref appendEndln))
{
break; // skip the rest of the line
}
}
}
if (appendEndln)
{
result.AppendNewLine();
}
}
private void ProcessIncludeCommand(Token includeCommand, int lineEnd)
{
if (Expect(includeCommand.s, includeCommand.end, '('))
{
Token param = ParseString(includeCommand.s, includeCommand.end + 1, lineEnd);
if (!param.IsValid())
{
Error("ERROR: $include expected a string file path parameter", includeCommand.s, includeCommand.end + 1);
}
// it's a predicate
// search for the colon within the current line
int colon = -1;
if (endln > dollar + 1)
var includeLocation = Path.Combine(templatePath, param.GetString());
if (!File.Exists(includeLocation))
{
Error("ERROR: $include cannot find file : " + includeLocation, includeCommand.s, param.start);
}
else
colon = code.IndexOf(':', dollar + 1, endln - dollar - 1);
// skip a line, just to be sure we've cleaned up the current line
result.AppendNewLine();
result.AppendLine("//-------------------------------------------------------------------------------------");
result.AppendLine("// TEMPLATE INCLUDE : " + param.GetString());
result.AppendLine("//-------------------------------------------------------------------------------------");
ProcessTemplateFile(includeLocation);
result.AppendNewLine();
result.AppendLine("//-------------------------------------------------------------------------------------");
result.AppendLine("// END TEMPLATE INCLUDE : " + param.GetString());
result.AppendLine("//-------------------------------------------------------------------------------------");
}
}
}
int predicateLength = colon - dollar - 1;
if ((colon < 0) || (predicateLength <= 0))
private bool ProcessSpliceCommand(Token spliceCommand, int lineEnd, ref int cur)
{
if (!Expect(spliceCommand.s, spliceCommand.end, '('))
{
return false;
}
else
{
Token param = ParseUntil(spliceCommand.s, spliceCommand.end + 1, lineEnd, ')');
if (!param.IsValid())
{
Error("ERROR: splice command is missing a ')'", spliceCommand.s, spliceCommand.start);
return false;
}
else
{
// append everything before the beginning of the escape sequence
AppendSubstring(spliceCommand.s, cur, true, spliceCommand.start-1, false);
// find the named fragment
string name = param.GetString(); // unfortunately this allocates a new string
string fragment;
if ((namedFragments != null) && namedFragments.TryGetValue(name, out fragment))
// no colon found... error! Spit out error and context
// splice the fragment
result.Append(fragment);
}
else
{
// no named fragment found
result.Append("/* WARNING: $splice Could not find named fragment '{0}' */", name);
}
// append everything before the beginning of the escape sequence
AppendSubstring(result, code, cur, true, dollar, false);
// advance to just after the ')' and continue parsing
cur = param.end + 1;
}
}
return true;
}
if (colon < 0)
{
result.Append("// ERROR: unterminated escape sequence ('$' and ':' must be matched)\n");
}
else
{
result.Append("// ERROR: predicate is zero length\n");
}
// append the line (commented out) for context
result.Append("// ");
AppendSubstring(result, code, dollar, true, endln, false);
private void ProcessBuildTypeCommand(Token command, int endLine)
{
if (Expect(command.s, command.end, '('))
{
Token param = ParseUntil(command.s, command.end + 1, endLine, ')');
if (!param.IsValid())
{
Error("ERROR: buildType command is missing a ')'", command.s, command.start);
}
else
{
string typeName = param.GetString();
string assemblyQualifiedTypeName = string.Format(buildTypeAssemblyNameFormat, typeName);
Type type = Type.GetType(assemblyQualifiedTypeName);
if (type == null)
{
Error("ERROR: buildType could not find type : " + typeName, command.s, param.start);
// colon found!
// ugh, this probably allocates memory -- wish we could do the field lookup direct from a substring
string predicate = code.Substring(dollar + 1, predicateLength);
int nonwhitespace = SkipWhitespace(code, colon + 1, endln);
if (activeFields.Contains(predicate))
{
// append everything before the beginning of the escape sequence
AppendSubstring(result, code, cur, true, dollar, false);
result.AppendLine("// Generated Type: " + typeName);
ShaderGenerator temp = new ShaderGenerator();
BuildType(type, activeFields, temp);
result.AppendLine(temp.GetShaderString(0, false));
}
}
}
}
private bool ProcessPredicate(Token predicate, int endLine, ref int cur, ref bool appendEndln)
{
// eval if(param)
string fieldName = predicate.GetString();
int nonwhitespace = SkipWhitespace(predicate.s, predicate.end + 1, endLine);
if (activeFields.Contains(fieldName))
{
// predicate is active
// append everything before the beginning of the escape sequence
AppendSubstring(predicate.s, cur, true, predicate.start-1, false);
// continue parsing the rest of the line, starting with the first nonwhitespace character
cur = nonwhitespace;
return true;
}
else
{
// predicate is not active
if (debugOutput)
{
// append everything before the beginning of the escape sequence
AppendSubstring(predicate.s, cur, true, predicate.start-1, false);
// append the rest of the line, commented out
result.Append("// ");
AppendSubstring(predicate.s, nonwhitespace, true, endLine, false);
}
else
{
// don't append anything
appendEndln = false;
}
return false;
}
}
// predicate is active, append the line
AppendSubstring(result, code, nonwhitespace, true, endln, false);
}
else
{
// predicate is not active
if (debugOutput)
{
// append everything before the beginning of the escape sequence
AppendSubstring(result, code, cur, true, dollar, false);
result.Append("// ");
AppendSubstring(result, code, nonwhitespace, true, endln, false);
}
else
{
skipEndln = true;
}
}
private Token ParseIdentifier(string code, int start, int end)
{
if (start < end)
{
char c = code[start];
if (Char.IsLetter(c) || (c == '_'))
{
int cur = start + 1;
while (cur < end)
{
c = code[cur];
if (!(Char.IsLetterOrDigit(c) || (c == '_')))
break;
cur++;
cur = endln + 1;
return new Token(code, start, cur);
return Token.Invalid();
if (!skipEndln)
private Token ParseString(string line, int start, int end)
result.AppendLine();
if (Expect(line, start, '"'))
{
return ParseUntil(line, start + 1, end, '"');
}
return Token.Invalid();
return result;
private Token ParseUntil(string line, int start, int end, char endChar)
{
int cur = start;
while (cur < end)
{
if (line[cur] == endChar)
{
return new Token(line, start, cur);
}
cur++;
}
return Token.Invalid();
}
private bool Expect(string line, int location, char expected)
{
if ((location < line.Length) && (line[location] == expected))
{
return true;
}
Error("Expected '" + expected + "'", line, location);
return false;
}
private void Error(string error, string line, int location)
{
// append the line for context
result.Append("\n");
result.Append("// ");
AppendSubstring(line, 0, true, line.Length, false);
result.Append("\n");
// append the location marker, and error description
result.Append("// ");
result.AppendSpaces(location);
result.Append("^ ");
result.Append(error);
result.Append("\n");
}
// an easier to use version of substring Append() -- explicit inclusion on each end, and checks for positive length
private void AppendSubstring(string str, int start, bool includeStart, int end, bool includeEnd)
{
if (!includeStart)
{
start++;
}
if (!includeEnd)
{
end--;
}
int count = end - start + 1;
if (count > 0)
{
result.Append(str, start, count);
}
}
}
public static void ApplyDependencies(HashSet<string> activeFields, List<Dependency[]> dependsList)

10
com.unity.shadergraph/Editor/Data/Util/ShaderStringBuilder.cs
查看文件


m_StringBuilder.Append(value);
}
public void Append(string value, int start, int count)
{
m_StringBuilder.Append(value, start, count);
}
}
public void AppendSpaces(int count)
{
m_StringBuilder.Append(' ', count);
}
public void AppendIndentation()

71
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/SharedCode.template.hlsl
查看文件


FragInputs BuildFragInputs(VaryingsMeshToPS input)
{
FragInputs output;
ZERO_INITIALIZE(FragInputs, output);
// Init to some default value to make the computer quiet (else it output 'divide by zero' warning even if value is not used).
// TODO: this is a really poor workaround, but the variable is used in a bunch of places
// to compute normals which are then passed on elsewhere to compute other values...
output.worldToTangent = k_identity3x3;
output.positionSS = input.positionCS; // input.positionCS is SV_Position
$FragInputs.positionRWS: output.positionRWS = input.positionRWS;
$FragInputs.worldToTangent: output.worldToTangent = BuildWorldToTangent(input.tangentWS, input.normalWS);
$FragInputs.texCoord0: output.texCoord0 = input.texCoord0;
$FragInputs.texCoord1: output.texCoord1 = input.texCoord1;
$FragInputs.texCoord2: output.texCoord2 = input.texCoord2;
$FragInputs.texCoord3: output.texCoord3 = input.texCoord3;
$FragInputs.color: output.color = input.color;
#if SHADER_STAGE_FRAGMENT
$FragInputs.isFrontFace: output.isFrontFace = IS_FRONT_VFACE(input.cullFace, true, false); // TODO: SHADER_STAGE_FRAGMENT only
$FragInputs.isFrontFace: // Handle handness of the view matrix (In Unity view matrix default to a determinant of -1)
$FragInputs.isFrontFace: // when we render a cubemap the view matrix handness is flipped (due to convention used for cubemap) we have a determinant of +1
$FragInputs.isFrontFace: output.isFrontFace = _DetViewMatrix < 0.0 ? output.isFrontFace : !output.isFrontFace;
#endif // SHADER_STAGE_FRAGMENT
return output;
}
SurfaceDescriptionInputs FragInputsToSurfaceDescriptionInputs(FragInputs input, float3 viewWS)
{
SurfaceDescriptionInputs output;
ZERO_INITIALIZE(SurfaceDescriptionInputs, output);
$SurfaceDescriptionInputs.WorldSpaceNormal: output.WorldSpaceNormal = normalize(input.worldToTangent[2].xyz);
$SurfaceDescriptionInputs.ObjectSpaceNormal: output.ObjectSpaceNormal = mul(output.WorldSpaceNormal, (float3x3) UNITY_MATRIX_M); // transposed multiplication by inverse matrix to handle normal scale
$SurfaceDescriptionInputs.ViewSpaceNormal: output.ViewSpaceNormal = mul(output.WorldSpaceNormal, (float3x3) UNITY_MATRIX_I_V); // transposed multiplication by inverse matrix to handle normal scale
$SurfaceDescriptionInputs.TangentSpaceNormal: output.TangentSpaceNormal = float3(0.0f, 0.0f, 1.0f);
$SurfaceDescriptionInputs.WorldSpaceTangent: output.WorldSpaceTangent = input.worldToTangent[0].xyz;
$SurfaceDescriptionInputs.ObjectSpaceTangent: output.ObjectSpaceTangent = TransformWorldToObjectDir(output.WorldSpaceTangent);
$SurfaceDescriptionInputs.ViewSpaceTangent: output.ViewSpaceTangent = TransformWorldToViewDir(output.WorldSpaceTangent);
$SurfaceDescriptionInputs.TangentSpaceTangent: output.TangentSpaceTangent = float3(1.0f, 0.0f, 0.0f);
$SurfaceDescriptionInputs.WorldSpaceBiTangent: output.WorldSpaceBiTangent = input.worldToTangent[1].xyz;
$SurfaceDescriptionInputs.ObjectSpaceBiTangent: output.ObjectSpaceBiTangent = TransformWorldToObjectDir(output.WorldSpaceBiTangent);
$SurfaceDescriptionInputs.ViewSpaceBiTangent: output.ViewSpaceBiTangent = TransformWorldToViewDir(output.WorldSpaceBiTangent);
$SurfaceDescriptionInputs.TangentSpaceBiTangent: output.TangentSpaceBiTangent = float3(0.0f, 1.0f, 0.0f);
$SurfaceDescriptionInputs.WorldSpaceViewDirection: output.WorldSpaceViewDirection = normalize(viewWS);
$SurfaceDescriptionInputs.ObjectSpaceViewDirection: output.ObjectSpaceViewDirection = TransformWorldToObjectDir(output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.ViewSpaceViewDirection: output.ViewSpaceViewDirection = TransformWorldToViewDir(output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.TangentSpaceViewDirection: float3x3 tangentSpaceTransform = float3x3(output.WorldSpaceTangent,output.WorldSpaceBiTangent,output.WorldSpaceNormal);
$SurfaceDescriptionInputs.TangentSpaceViewDirection: output.TangentSpaceViewDirection = mul(tangentSpaceTransform, output.WorldSpaceViewDirection);
$SurfaceDescriptionInputs.WorldSpacePosition: output.WorldSpacePosition = GetAbsolutePositionWS(input.positionRWS);
$SurfaceDescriptionInputs.ObjectSpacePosition: output.ObjectSpacePosition = TransformWorldToObject(input.positionRWS);
$SurfaceDescriptionInputs.ViewSpacePosition: output.ViewSpacePosition = TransformWorldToView(input.positionRWS);
$SurfaceDescriptionInputs.TangentSpacePosition: output.TangentSpacePosition = float3(0.0f, 0.0f, 0.0f);
$SurfaceDescriptionInputs.ScreenPosition: output.ScreenPosition = ComputeScreenPos(TransformWorldToHClip(input.positionRWS), _ProjectionParams.x);
$SurfaceDescriptionInputs.uv0: output.uv0 = float4(input.texCoord0, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv1: output.uv1 = float4(input.texCoord1, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv2: output.uv2 = float4(input.texCoord2, 0.0f, 0.0f);
$SurfaceDescriptionInputs.uv3: output.uv3 = float4(input.texCoord3, 0.0f, 0.0f);
$SurfaceDescriptionInputs.VertexColor: output.VertexColor = input.color;
$SurfaceDescriptionInputs.FaceSign: output.FaceSign = input.isFrontFace;
return output;
}
// existing HDRP code uses the combined function to go directly from packed to frag inputs
FragInputs UnpackVaryingsMeshToFragInputs(PackedVaryingsMeshToPS input)
{
VaryingsMeshToPS unpacked= UnpackVaryingsMeshToPS(input);
return BuildFragInputs(unpacked);
}

9
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/SharedCode.template.hlsl.meta
查看文件


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guid: 63ca087b7dde4344bafcf314b6a7df47
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50
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/VertexAnimation.template.hlsl
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VertexDescriptionInputs AttributesMeshToVertexDescriptionInputs(AttributesMesh input)
{
VertexDescriptionInputs output;
ZERO_INITIALIZE(VertexDescriptionInputs, output);
$VertexDescriptionInputs.ObjectSpaceNormal: output.ObjectSpaceNormal = input.normalOS;
$VertexDescriptionInputs.WorldSpaceNormal: output.WorldSpaceNormal = TransformObjectToWorldNormal(input.normalOS);
$VertexDescriptionInputs.ViewSpaceNormal: output.ViewSpaceNormal = TransformWorldToViewDir(output.WorldSpaceNormal);
$VertexDescriptionInputs.TangentSpaceNormal: output.TangentSpaceNormal = float3(0.0f, 0.0f, 1.0f);
$VertexDescriptionInputs.ObjectSpaceTangent: output.ObjectSpaceTangent = input.tangentOS;
$VertexDescriptionInputs.WorldSpaceTangent: output.WorldSpaceTangent = TransformObjectToWorldDir(input.tangentOS.xyz);
$VertexDescriptionInputs.ViewSpaceTangent: output.ViewSpaceTangent = TransformWorldToViewDir(output.WorldSpaceTangent);
$VertexDescriptionInputs.TangentSpaceTangent: output.TangentSpaceTangent = float3(1.0f, 0.0f, 0.0f);
$VertexDescriptionInputs.ObjectSpaceBiTangent: output.ObjectSpaceBiTangent = normalize(cross(input.normalOS, input.tangentOS) * (input.tangentOS.w > 0.0f ? 1.0f : -1.0f) * GetOddNegativeScale());
$VertexDescriptionInputs.WorldSpaceBiTangent: output.WorldSpaceBiTangent = TransformObjectToWorldDir(output.ObjectSpaceBiTangent);
$VertexDescriptionInputs.ViewSpaceBiTangent: output.ViewSpaceBiTangent = TransformWorldToViewDir(output.WorldSpaceBiTangent);
$VertexDescriptionInputs.TangentSpaceBiTangent: output.TangentSpaceBiTangent = float3(0.0f, 1.0f, 0.0f);
$VertexDescriptionInputs.ObjectSpacePosition: output.ObjectSpacePosition = input.positionOS;
$VertexDescriptionInputs.WorldSpacePosition: output.WorldSpacePosition = GetAbsolutePositionWS(TransformObjectToWorld(input.positionOS));
$VertexDescriptionInputs.ViewSpacePosition: output.ViewSpacePosition = TransformWorldToView(output.WorldSpacePosition);
$VertexDescriptionInputs.TangentSpacePosition: output.TangentSpacePosition = float3(0.0f, 0.0f, 0.0f);
$VertexDescriptionInputs.WorldSpaceViewDirection: output.WorldSpaceViewDirection = GetWorldSpaceNormalizeViewDir(output.WorldSpacePosition);
$VertexDescriptionInputs.ObjectSpaceViewDirection: output.ObjectSpaceViewDirection = TransformWorldToObjectDir(output.WorldSpaceViewDirection);
$VertexDescriptionInputs.ViewSpaceViewDirection: output.ViewSpaceViewDirection = TransformWorldToViewDir(output.WorldSpaceViewDirection);
$VertexDescriptionInputs.TangentSpaceViewDirection: float3x3 tangentSpaceTransform = float3x3(output.WorldSpaceTangent,output.WorldSpaceBiTangent,output.WorldSpaceNormal);
$VertexDescriptionInputs.TangentSpaceViewDirection: output.TangentSpaceViewDirection = mul(tangentSpaceTransform, output.WorldSpaceViewDirection);
$VertexDescriptionInputs.ScreenPosition: output.ScreenPosition = ComputeScreenPos(TransformWorldToHClip(output.WorldSpacePosition), _ProjectionParams.x);
$VertexDescriptionInputs.uv0: output.uv0 = float4(input.uv0, 0.0f, 0.0f);
$VertexDescriptionInputs.uv1: output.uv1 = float4(input.uv1, 0.0f, 0.0f);
$VertexDescriptionInputs.uv2: output.uv2 = float4(input.uv2, 0.0f, 0.0f);
$VertexDescriptionInputs.uv3: output.uv3 = float4(input.uv3, 0.0f, 0.0f);
$VertexDescriptionInputs.VertexColor: output.VertexColor = input.color;
return output;
}
AttributesMesh ApplyMeshModification(AttributesMesh input)
{
// build graph inputs
VertexDescriptionInputs vertexDescriptionInputs = AttributesMeshToVertexDescriptionInputs(input);
// evaluate vertex graph
VertexDescription vertexDescription = VertexDescriptionFunction(vertexDescriptionInputs);
// copy graph output to the results
$VertexDescription.Position: input.positionOS = vertexDescription.Position;
return input;
}

9
com.unity.render-pipelines.high-definition/HDRP/Editor/ShaderGraph/VertexAnimation.template.hlsl.meta
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