GLES20RenderEngine.h revision ff2ed70fa30f04b90dd1a2c06ec2319e157152d7 
1/*
2 * Copyright 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17
18#ifndef SF_GLES20RENDERENGINE_H_
19#define SF_GLES20RENDERENGINE_H_
20
21#include <stdint.h>
22#include <sys/types.h>
23
24#include <GLES2/gl2.h>
25
26#include "RenderEngine.h"
27#include "ProgramCache.h"
28#include "Description.h"
29
30// ---------------------------------------------------------------------------
31namespace android {
32// ---------------------------------------------------------------------------
33
34class String8;
35class Mesh;
36class Texture;
37
38class GLES20RenderEngine : public RenderEngine {
39    GLuint mProtectedTexName;
40    GLint mMaxViewportDims[2];
41    GLint mMaxTextureSize;
42    GLuint mVpWidth;
43    GLuint mVpHeight;
44
45    struct Group {
46        GLuint texture;
47        GLuint fbo;
48        GLuint width;
49        GLuint height;
50        mat4 colorTransform;
51    };
52
53    Description mState;
54    Vector<Group> mGroupStack;
55
56    virtual void bindImageAsFramebuffer(EGLImageKHR image,
57            uint32_t* texName, uint32_t* fbName, uint32_t* status);
58    virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName);
59
60public:
61    GLES20RenderEngine();
62
63protected:
64    virtual ~GLES20RenderEngine();
65
66    virtual void dump(String8& result);
67    virtual void setViewportAndProjection(size_t vpw, size_t vph, size_t w, size_t h, bool yswap);
68    virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha);
69    virtual void setupDimLayerBlending(int alpha);
70    virtual void setupLayerTexturing(const Texture& texture);
71    virtual void setupLayerBlackedOut();
72    virtual void setupFillWithColor(float r, float g, float b, float a);
73    virtual void disableTexturing();
74    virtual void disableBlending();
75
76    virtual void drawMesh(const Mesh& mesh);
77
78    virtual void beginGroup(const mat4& colorTransform);
79    virtual void endGroup();
80
81    virtual size_t getMaxTextureSize() const;
82    virtual size_t getMaxViewportDims() const;
83};
84
85// ---------------------------------------------------------------------------
86}; // namespace android
87// ---------------------------------------------------------------------------
88
89#endif /* SF_GLES20RENDERENGINE_H_ */
90