2012-04-19 14:35:52 +08:00
|
|
|
/*
|
|
|
|
|
Copyright 2010 Google Inc.
|
|
|
|
|
|
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
|
you may not use this file except in compliance with the License.
|
|
|
|
|
You may obtain a copy of the License at
|
|
|
|
|
|
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
|
|
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
|
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
|
See the License for the specific language governing permissions and
|
|
|
|
|
limitations under the License.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef GrGpuGLFixed_DEFINED
|
|
|
|
|
#define GrGpuGLFixed_DEFINED
|
|
|
|
|
|
|
|
|
|
#include "GrGpuGL.h"
|
|
|
|
|
|
|
|
|
|
// Fixed Pipeline OpenGL or OpenGL ES 1.x
|
|
|
|
|
class GrGpuGLFixed : public GrGpuGL {
|
|
|
|
|
public:
|
|
|
|
|
GrGpuGLFixed();
|
|
|
|
|
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
|
