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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrGLGeometryProcessor_DEFINED
#define GrGLGeometryProcessor_DEFINED
#include "GrGLProcessor.h"
class GrGLGPBuilder;
/**
* If a GL effect needs a GrGLFullShaderBuilder* object to emit vertex code, then it must inherit
* from this class. Since paths don't have vertices, this class is only meant to be used internally
* by skia, for special cases.
*/
class GrGLGeometryProcessor : public GrGLProcessor {
public:
GrGLGeometryProcessor(const GrBackendProcessorFactory& factory)
: INHERITED(factory) {}
struct EmitArgs {
EmitArgs(GrGLGPBuilder* pb,
const GrGeometryProcessor& gp,
const GrProcessorKey& key,
const char* output,
const char* input,
const TextureSamplerArray& samplers)
: fPB(pb), fGP(gp), fKey(key), fOutput(output), fInput(input), fSamplers(samplers) {}
GrGLGPBuilder* fPB;
const GrGeometryProcessor& fGP;
const GrProcessorKey& fKey;
const char* fOutput;
const char* fInput;
const TextureSamplerArray& fSamplers;
};
/**
* This is similar to emitCode() in the base class, except it takes a full shader builder.
* This allows the effect subclass to emit vertex code.
*/
virtual void emitCode(const EmitArgs&) = 0;
private:
typedef GrGLProcessor INHERITED;
};
#endif
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