1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLVertexEffect.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,52 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef GrGLVertexEffect_DEFINED
1.12 +#define GrGLVertexEffect_DEFINED
1.13 +
1.14 +#include "GrGLEffect.h"
1.15 +
1.16 +/**
1.17 + * If a GL effect needs a GrGLFullShaderBuilder* object to emit vertex code, then it must inherit
1.18 + * from this class. Since paths don't have vertices, this class is only meant to be used internally
1.19 + * by skia, for special cases.
1.20 + */
1.21 +class GrGLVertexEffect : public GrGLEffect {
1.22 +public:
1.23 + GrGLVertexEffect(const GrBackendEffectFactory& factory)
1.24 + : INHERITED(factory) { fIsVertexEffect = true; }
1.25 +
1.26 + /**
1.27 + * This is similar to emitCode() in the base class, except it takes a full shader builder.
1.28 + * This allows the effect subclass to emit vertex code.
1.29 + */
1.30 + virtual void emitCode(GrGLFullShaderBuilder* builder,
1.31 + const GrDrawEffect& drawEffect,
1.32 + EffectKey key,
1.33 + const char* outputColor,
1.34 + const char* inputColor,
1.35 + const TransformedCoordsArray& coords,
1.36 + const TextureSamplerArray& samplers) = 0;
1.37 +
1.38 + /**
1.39 + * Provide a default override for base class's emitCode() function.
1.40 + */
1.41 + virtual void emitCode(GrGLShaderBuilder* builder,
1.42 + const GrDrawEffect& drawEffect,
1.43 + EffectKey key,
1.44 + const char* outputColor,
1.45 + const char* inputColor,
1.46 + const TransformedCoordsArray& coords,
1.47 + const TextureSamplerArray& samplers) SK_OVERRIDE {
1.48 + GrCrash("GrGLVertexEffect requires GrGLFullShaderBuilder* overload for emitCode().");
1.49 + }
1.50 +
1.51 +private:
1.52 + typedef GrGLEffect INHERITED;
1.53 +};
1.54 +
1.55 +#endif
