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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrGpuGLFixed_DEFINED
#define GrGpuGLFixed_DEFINED
#include "GrGpuGL.h"
// Fixed Pipeline OpenGL or OpenGL ES 1.x
class GrGpuGLFixed : public GrGpuGL {
public:
GrGpuGLFixed(const GrGLInterface* glInterface);
virtual ~GrGpuGLFixed();
protected:
// overrides from GrGpu
virtual bool flushGraphicsState(GrPrimitiveType type);
virtual void setupGeometry(int* startVertex,
int* startIndex,
int vertexCount,
int indexCount);
private:
virtual void resetContext();
// Helpers to make code more readable
const GrMatrix& getHWSamplerMatrix(int stage) const {
return fHWDrawState.fSamplerStates[stage].getMatrix();
}
void recordHWSamplerMatrix(int stage, const GrMatrix& matrix) {
fHWDrawState.fSamplerStates[stage].setMatrix(matrix);
}
// when the texture is GL_RGBA we set the GL_COMBINE texture
// environment rgb operand 0 to be GL_COLOR to modulate each incoming
// R,G, & B by the texture's R, G, & B. When the texture is alpha-only we
// set the operand to GL_ALPHA so that the incoming frag's R, G, &B are all
// modulated by the texture's A.
enum TextureEnvRGBOperands {
kAlpha_TextureEnvRGBOperand,
kColor_TextureEnvRGBOperand,
};
TextureEnvRGBOperands fHWRGBOperand0[kNumStages];
void flushProjectionMatrix();
// are the currently bound vertex buffers/arrays laid
// out for text or other drawing.
bool fTextVerts;
// On GL we have to build the base vertex offset into the
// glVertexPointer/glTexCoordPointer/etc
int fBaseVertex;
typedef GrGpuGL INHERITED;
};
#endif
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