The Tor Browser: gfx/skia/trunk/src/gpu/effects/GrVertexEffect.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Copyright 2013 Google Inc.

     3  *

     4  * Use of this source code is governed by a BSD-style license that can be

     5  * found in the LICENSE file.

     6  */

     8 #ifndef GrVertexEffect_DEFINED

     9 #define GrVertexEffect_DEFINED

    11 #include "GrEffect.h"

    13 /**

    14  * If an effect needs specialized vertex shader code, then it must inherit from this class.

    15  * Otherwise it won't be able to add vertex attribs, and it might be given a vertexless shader

    16  * program in emitCode.

    17  */

    18 class GrVertexEffect : public GrEffect {

    19 public:

    20     GrVertexEffect() { fHasVertexCode = true; }

    22 protected:

    23     /**

    24      * Subclasses call this from their constructor to register vertex attributes (at most

    25      * kMaxVertexAttribs). This must only be called from the constructor because GrEffects are

    26      * immutable.

    27      */

    28     void addVertexAttrib(GrSLType type) {

    29         SkASSERT(fVertexAttribTypes.count() < kMaxVertexAttribs);

    30         fVertexAttribTypes.push_back(type);

    31     }

    33 private:

    34     typedef GrEffect INHERITED;

    35 };

    37 #endif

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