C++编程-5：Android native层使用OpenGL离屏渲染上下文

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于 2018-04-20 13:54:10 发布 · 1.6k 阅读

5 ·

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#opengl #android #native

int AndroidOpenGLEAGLContext::Init(AndroidOpenGLEAGLContextConf * conf)
{
	EGLint config_attribs[] = {
			EGL_BLUE_SIZE, 8,
			EGL_GREEN_SIZE, 8,
			EGL_RED_SIZE, 8,

			EGL_ALPHA_SIZE, 8,
			EGL_RENDERABLE_TYPE,
			EGL_OPENGL_ES2_BIT,
			EGL_SURFACE_TYPE,
			EGL_WINDOW_BIT,
			EGL_NONE
	};
	EGLint width, height, format;
	EGLint numConfigs;
	EGLConfig config;
	EGLSurface surface;
	EGLContext context;

	GLint majorVersion;
	GLint minorVersion;

	EGLBoolean success=EGL_FALSE;
	EGLint error=0;

	EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); //EGL_DEFAULT_DISPLAY

	if(EGL_NO_DISPLAY != display)
	{
		success=eglInitialize(display, &majorVersion, &minorVersion);
		if(success != EGL_TRUE)
		{
			error=eglGetError();
			DP_MSG("error %0x",error);
			return -1;
		}
	}
	success=eglChooseConfig(display, config_attribs, &config, 1, &numConfigs);
	DP_MSG("eglChooseConfig numConfigs=%d",numConfigs)
	if(success != EGL_TRUE)
	{