mirror of https://github.com/axmolengine/axmol.git
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
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/*
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Copyright 2010 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#ifndef GrGpuGLFixed_DEFINED
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#define GrGpuGLFixed_DEFINED
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#include "GrGpuGL.h"
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// Fixed Pipeline OpenGL or OpenGL ES 1.x
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class GrGpuGLFixed : public GrGpuGL {
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public:
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GrGpuGLFixed();
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virtual ~GrGpuGLFixed();
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protected:
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// overrides from GrGpu
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virtual bool flushGraphicsState(GrPrimitiveType type);
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virtual void setupGeometry(int* startVertex,
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int* startIndex,
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int vertexCount,
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int indexCount);
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private:
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virtual void resetContext();
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// Helpers to make code more readable
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const GrMatrix& getHWSamplerMatrix(int stage) const {
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return fHWDrawState.fSamplerStates[stage].getMatrix();
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}
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void recordHWSamplerMatrix(int stage, const GrMatrix& matrix) {
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fHWDrawState.fSamplerStates[stage].setMatrix(matrix);
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}
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// when the texture is GL_RGBA we set the GL_COMBINE texture
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// environment rgb operand 0 to be GL_COLOR to modulate each incoming
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// R,G, & B by the texture's R, G, & B. When the texture is alpha-only we
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// set the operand to GL_ALPHA so that the incoming frag's R, G, &B are all
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// modulated by the texture's A.
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enum TextureEnvRGBOperands {
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kAlpha_TextureEnvRGBOperand,
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kColor_TextureEnvRGBOperand,
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};
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TextureEnvRGBOperands fHWRGBOperand0[kNumStages];
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void flushProjectionMatrix();
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// are the currently bound vertex buffers/arrays laid
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// out for text or other drawing.
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bool fTextVerts;
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// On GL we have to build the base vertex offset into the
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// glVertexPointer/glTexCoordPointer/etc
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int fBaseVertex;
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typedef GrGpuGL INHERITED;
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};
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#endif
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