Java EGL10.EGL_SURFACE_TYPE属性代码示例

@Override
public  EGLConfig chooseConfig(EGL10 egl, EGLDisplay display){
    final int EGL_OPENGL_ES2_BIT = 0x0004;

    int[] attribList = {
            EGL10.EGL_RED_SIZE, 8,
            EGL10.EGL_GREEN_SIZE, 8,
            EGL10.EGL_BLUE_SIZE, 8,
            EGL10.EGL_ALPHA_SIZE, 8,
            EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
            EGL10.EGL_SURFACE_TYPE, EGL10.EGL_PBUFFER_BIT,
            EGL10.EGL_NONE
    };
    EGLConfig[] configs = new EGLConfig[1];
    int[] numConfigs = new int[1];
    if (!egl.eglChooseConfig(display, attribList, configs, configs.length,
            numConfigs)) {
        throw new RuntimeException("unable to find RGB888+recordable ES2 EGL config");
    }

    return  configs[0];
}
 

int[] build(){
    return new int[] {
            EGL10.EGL_SURFACE_TYPE, surfaceType,      //渲染类型
            EGL10.EGL_RED_SIZE, red,  //指定RGB中的R大小（bits）
            EGL10.EGL_GREEN_SIZE, green, //指定G大小
            EGL10.EGL_BLUE_SIZE, blue,  //指定B大小
            EGL10.EGL_ALPHA_SIZE, alpha, //指定Alpha大小，以上四项实际上指定了像素格式
            EGL10.EGL_DEPTH_SIZE, depth, //指定深度缓存(Z Buffer)大小
            EGL10.EGL_RENDERABLE_TYPE, renderType, //指定渲染api类别, 如上一小节描述，这里或者是硬编码的4(EGL14.EGL_OPENGL_ES2_BIT)
            EGL10.EGL_NONE };  //总是以EGL14.EGL_NONE结尾
}
 

private void eglSetup(int width, int height) {
    mEGL = (EGL10) EGLContext.getEGL();
    mEGLDisplay = mEGL.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);

    if (mEGLDisplay == EGL10.EGL_NO_DISPLAY) {
        throw new RuntimeException("unable to get EGL10 display");
    }

    if (!mEGL.eglInitialize(mEGLDisplay, null)) {
        mEGLDisplay = null;
        throw new RuntimeException("unable to initialize EGL10");
    }

    int[] attribList = {
            EGL10.EGL_RED_SIZE, 8,
            EGL10.EGL_GREEN_SIZE, 8,
            EGL10.EGL_BLUE_SIZE, 8,
            EGL10.EGL_ALPHA_SIZE, 8,
            EGL10.EGL_SURFACE_TYPE, EGL10.EGL_PBUFFER_BIT,
            EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
            EGL10.EGL_NONE
    };
    EGLConfig[] configs = new EGLConfig[1];
    int[] numConfigs = new int[1];
    if (!mEGL.eglChooseConfig(mEGLDisplay, attribList, configs, configs.length, numConfigs)) {
        throw new RuntimeException("unable to find RGB888+pbuffer EGL config");
    }
    int[] attrib_list = {
            EGL_CONTEXT_CLIENT_VERSION, 2,
            EGL10.EGL_NONE
    };
    mEGLContext = mEGL.eglCreateContext(mEGLDisplay, configs[0], EGL10.EGL_NO_CONTEXT, attrib_list);
    checkEglError("eglCreateContext");
    if (mEGLContext == null) {
        throw new RuntimeException("null context");
    }
    int[] surfaceAttribs = {
            EGL10.EGL_WIDTH, width,
            EGL10.EGL_HEIGHT, height,
            EGL10.EGL_NONE
    };
    mEGLSurface = mEGL.eglCreatePbufferSurface(mEGLDisplay, configs[0], surfaceAttribs);
    checkEglError("eglCreatePbufferSurface");
    if (mEGLSurface == null) {
        throw new RuntimeException("surface was null");
    }
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private static int getMaxTextureEgl10() {
    EGL10 egl = (EGL10) javax.microedition.khronos.egl.EGLContext.getEGL();

    javax.microedition.khronos.egl.EGLDisplay dpy = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
    int[] vers = new int[2];
    egl.eglInitialize(dpy, vers);

    int[] configAttr = {
            EGL10.EGL_COLOR_BUFFER_TYPE, EGL10.EGL_RGB_BUFFER,
            EGL10.EGL_LEVEL, 0,
            EGL10.EGL_SURFACE_TYPE, EGL10.EGL_PBUFFER_BIT,
            EGL10.EGL_NONE
    };
    javax.microedition.khronos.egl.EGLConfig[] configs = new javax.microedition.khronos.egl.EGLConfig[1];
    int[] numConfig = new int[1];
    egl.eglChooseConfig(dpy, configAttr, configs, 1, numConfig);
    if (numConfig[0] == 0) {
        return 0;
    }
    javax.microedition.khronos.egl.EGLConfig config = configs[0];

    int[] surfAttr = {
            EGL10.EGL_WIDTH, 64,
            EGL10.EGL_HEIGHT, 64,
            EGL10.EGL_NONE
    };
    javax.microedition.khronos.egl.EGLSurface surf = egl.eglCreatePbufferSurface(dpy, config, surfAttr);
    final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;  // missing in EGL10
    int[] ctxAttrib = {
            EGL_CONTEXT_CLIENT_VERSION, 1,
            EGL10.EGL_NONE
    };
    javax.microedition.khronos.egl.EGLContext ctx = egl.eglCreateContext(dpy, config, EGL10.EGL_NO_CONTEXT, ctxAttrib);
    egl.eglMakeCurrent(dpy, surf, surf, ctx);
    int[] maxSize = new int[1];
    GLES10.glGetIntegerv(GLES10.GL_MAX_TEXTURE_SIZE, maxSize, 0);
    egl.eglMakeCurrent(dpy, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE,
            EGL10.EGL_NO_CONTEXT);
    egl.eglDestroySurface(dpy, surf);
    egl.eglDestroyContext(dpy, ctx);
    egl.eglTerminate(dpy);

    return maxSize[0];
}