mirror of https://github.com/alibaba/MNN.git
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
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//
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// GLContext.cpp
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// MNN
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//
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// Created by MNN on 2019/01/31.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include "GLContext.h"
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#include <EGL/egl.h>
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namespace MNN {
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class GLContext::nativeContext {
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public:
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nativeContext() {
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mDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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EGLint majorVersion;
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EGLint minorVersion;
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eglInitialize(mDisplay, &majorVersion, &minorVersion);
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EGLint numConfigs;
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static const EGLint configAttribs[] = {EGL_SURFACE_TYPE,
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EGL_PBUFFER_BIT,
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EGL_RENDERABLE_TYPE,
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EGL_OPENGL_ES2_BIT,
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EGL_RED_SIZE,
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8,
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EGL_GREEN_SIZE,
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8,
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EGL_BLUE_SIZE,
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8,
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EGL_ALPHA_SIZE,
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8,
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EGL_NONE};
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EGLConfig surfaceConfig;
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eglChooseConfig(mDisplay, configAttribs, &surfaceConfig, 1, &numConfigs);
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static const EGLint contextAttribs[] = {EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE};
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mContext = eglCreateContext(mDisplay, surfaceConfig, NULL, contextAttribs);
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static const EGLint surfaceAttribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE};
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mSurface = eglCreatePbufferSurface(mDisplay, surfaceConfig, surfaceAttribs);
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eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);
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}
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~nativeContext() {
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eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroyContext(mDisplay, mContext);
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eglDestroySurface(mDisplay, mSurface);
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eglTerminate(mDisplay);
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mDisplay = EGL_NO_DISPLAY;
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}
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private:
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EGLContext mContext;
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EGLDisplay mDisplay;
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EGLSurface mSurface;
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};
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GLContext::nativeContext* GLContext::init(int version) {
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return new nativeContext;
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}
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void GLContext::destroy(nativeContext* context) {
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delete context;
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}
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} // namespace MNN
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