Home | History | Annotate | Download | only in RenderEngine 
      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 #include <Transform.h>
     26 
     27 #include "RenderEngine.h"
     28 #include "ProgramCache.h"
     29 #include "Description.h"
     30 
     31 // ---------------------------------------------------------------------------
     32 namespace android {
     33 // ---------------------------------------------------------------------------
     34 
     35 class String8;
     36 class Mesh;
     37 class Texture;
     38 
     39 class GLES20RenderEngine : public RenderEngine {
     40     GLuint mProtectedTexName;
     41     GLint mMaxViewportDims[2];
     42     GLint mMaxTextureSize;
     43     GLuint mVpWidth;
     44     GLuint mVpHeight;
     45 
     46     struct Group {
     47         GLuint texture;
     48         GLuint fbo;
     49         GLuint width;
     50         GLuint height;
     51         mat4 colorTransform;
     52     };
     53 
     54     Description mState;
     55     Vector<Group> mGroupStack;
     56 
     57     virtual void bindImageAsFramebuffer(EGLImageKHR image,
     58             uint32_t* texName, uint32_t* fbName, uint32_t* status);
     59     virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName);
     60 
     61 public:
     62     GLES20RenderEngine();
     63 
     64 protected:
     65     virtual ~GLES20RenderEngine();
     66 
     67     virtual void dump(String8& result);
     68     virtual void setViewportAndProjection(size_t vpw, size_t vph,
     69             Rect sourceCrop, size_t hwh, bool yswap,
     70             Transform::orientation_flags rotation);
     71 #ifdef USE_HWC2
     72     virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque,
     73             float alpha) override;
     74     virtual void setupDimLayerBlending(float alpha) override;
     75 #else
     76     virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque,
     77             int alpha);
     78     virtual void setupDimLayerBlending(int alpha);
     79 #endif
     80     virtual void setupLayerTexturing(const Texture& texture);
     81     virtual void setupLayerBlackedOut();
     82     virtual void setupFillWithColor(float r, float g, float b, float a);
     83     virtual mat4 setupColorTransform(const mat4& colorTransform);
     84     virtual void disableTexturing();
     85     virtual void disableBlending();
     86 
     87     virtual void drawMesh(const Mesh& mesh);
     88 
     89     virtual size_t getMaxTextureSize() const;
     90     virtual size_t getMaxViewportDims() const;
     91 };
     92 
     93 // ---------------------------------------------------------------------------
     94 }; // namespace android
     95 // ---------------------------------------------------------------------------
     96 
     97 #endif /* SF_GLES20RENDERENGINE_H_ */
     98