106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/*
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* Copyright 2013 The Android Open Source Project
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 SF_RENDERENGINE_H_
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#define SF_RENDERENGINE_H_
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#include <stdint.h>
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#include <sys/types.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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class String8;
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class Rect;
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class Region;
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class Mesh;
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class RenderEngine {
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enum GlesVersion {
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GLES_VERSION_1_0 = 0x10000,
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GLES_VERSION_1_1 = 0x10001,
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GLES_VERSION_2_0 = 0x20000,
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GLES_VERSION_3_0 = 0x30000,
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};
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static GlesVersion parseGlesVersion(const char* str);
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EGLContext mEGLContext;
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void setEGLContext(EGLContext ctxt);
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protected:
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RenderEngine();
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virtual ~RenderEngine() = 0;
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public:
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static RenderEngine* create(EGLDisplay display, EGLConfig config);
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// helpers
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void clearWithColor(float red, float green, float blue, float alpha);
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void fillRegionWithColor(const Region& region, uint32_t height,
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float red, float green, float blue, float alpha);
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// common to all GL versions
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void setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top);
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void disableScissor();
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void genTextures(size_t count, uint32_t* names);
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void deleteTextures(size_t count, uint32_t const* names);
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class BindImageAsFramebuffer {
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RenderEngine& mEngine;
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unsigned int mTexName, mFbName;
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unsigned int mStatus;
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public:
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BindImageAsFramebuffer(RenderEngine& engine, EGLImageKHR image);
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~BindImageAsFramebuffer();
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int getStatus() const;
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};
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// set-up
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virtual void checkErrors() const;
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virtual void dump(String8& result) = 0;
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virtual void setViewportAndProjection(size_t vpw, size_t vph, size_t w, size_t h, bool yswap) = 0;
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virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha) = 0;
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virtual void setupDimLayerBlending(int alpha) = 0;
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virtual void setupLayerTexturing(size_t textureName, bool useFiltering, const float* textureMatrix) = 0;
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virtual void setupLayerBlackedOut() = 0;
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virtual void disableTexturing() = 0;
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virtual void disableBlending() = 0;
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// drawing
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virtual void fillWithColor(const Mesh& mesh, float r, float g, float b, float a) = 0;
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virtual void drawMesh(const Mesh& mesh) = 0;
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// queries
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virtual size_t getMaxTextureSize() const = 0;
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virtual size_t getMaxViewportDims() const = 0;
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EGLContext getEGLContext() const;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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// ---------------------------------------------------------------------------
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#endif /* SF_RENDERENGINE_H_ */
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