Java EGL14.EGL_PBUFFER_BIT属性代码示例

/**
 * @param display an EGL display connection instance
 * @param usePBuffer do not accept rendering through the native window system
 * @return frame buffer configuration that defines the frame buffer resource available to the
 * rendering context.
 **/
@NonNull
public static EGLConfig newConfig(@NonNull EGLDisplay display, boolean usePBuffer) {
    final int surfaceTypeKey = usePBuffer ? EGL14.EGL_SURFACE_TYPE : RECORDABLE_ANDROID;
    final int surfaceTypeValue = usePBuffer ? EGL14.EGL_PBUFFER_BIT : 1;
    final EGLConfig[] configs = new EGLConfig[1];
    final int[] numConfigs = new int[1];
    if (!EGL14.eglChooseConfig(display,
            new int[] {
                    EGL14.EGL_RED_SIZE, 5,
                    EGL14.EGL_GREEN_SIZE, 6,
                    EGL14.EGL_BLUE_SIZE, 5,
                    /*EGL14.EGL_RED_SIZE, 8,
                    EGL14.EGL_GREEN_SIZE, 8,
                    EGL14.EGL_BLUE_SIZE, 8,
                    EGL14.EGL_ALPHA_SIZE, 8,*/

                    EGL14.EGL_RENDERABLE_TYPE,
                    EGL14.EGL_OPENGL_ES2_BIT,
                    surfaceTypeKey, surfaceTypeValue,
                    EGL14.EGL_NONE }, 0,
            configs, 0, configs.length, numConfigs, 0) && numConfigs[0] == 1) {
            logError();
            throw new RuntimeException("Unable to from EGL14 config");
    } else {
        final EGLConfig result = configs[0];
        logDebug(getConfigString(result) + " created");
        return result;
    }
}
 

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private static int getMaxTextureEgl14() {
    EGLDisplay dpy = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
    int[] vers = new int[2];
    EGL14.eglInitialize(dpy, vers, 0, vers, 1);

    int[] configAttr = {
            EGL14.EGL_COLOR_BUFFER_TYPE, EGL14.EGL_RGB_BUFFER,
            EGL14.EGL_LEVEL, 0,
            EGL14.EGL_RENDERABLE_TYPE, EGL14.EGL_OPENGL_ES2_BIT,
            EGL14.EGL_SURFACE_TYPE, EGL14.EGL_PBUFFER_BIT,
            EGL14.EGL_NONE
    };
    EGLConfig[] configs = new EGLConfig[1];
    int[] numConfig = new int[1];
    EGL14.eglChooseConfig(dpy, configAttr, 0,
            configs, 0, 1, numConfig, 0);
    if (numConfig[0] == 0) {
        return 0;
    }
    EGLConfig config = configs[0];

    int[] surfAttr = {
            EGL14.EGL_WIDTH, 64,
            EGL14.EGL_HEIGHT, 64,
            EGL14.EGL_NONE
    };
    EGLSurface surf = EGL14.eglCreatePbufferSurface(dpy, config, surfAttr, 0);

    int[] ctxAttrib = {
            EGL14.EGL_CONTEXT_CLIENT_VERSION, 2,
            EGL14.EGL_NONE
    };
    EGLContext ctx = EGL14.eglCreateContext(dpy, config, EGL14.EGL_NO_CONTEXT, ctxAttrib, 0);

    EGL14.eglMakeCurrent(dpy, surf, surf, ctx);

    int[] maxSize = new int[1];
    GLES20.glGetIntegerv(GLES20.GL_MAX_TEXTURE_SIZE, maxSize, 0);

    EGL14.eglMakeCurrent(dpy, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
            EGL14.EGL_NO_CONTEXT);
    EGL14.eglDestroySurface(dpy, surf);
    EGL14.eglDestroyContext(dpy, ctx);
    EGL14.eglTerminate(dpy);

    return maxSize[0];
}
 

/**
 * Prepares EGL.  We want a GLES 2.0 context and a surface that supports pbuffer.
 */
private void eglSetup(int width, int height) {
    mEGLDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
    if (mEGLDisplay == EGL14.EGL_NO_DISPLAY) {
        throw new RuntimeException("unable to get EGL14 display");
    }
    int[] version = new int[2];
    if (!EGL14.eglInitialize(mEGLDisplay, version, 0, version, 1)) {
        mEGLDisplay = null;
        throw new RuntimeException("unable to initialize EGL14");
    }
    // Configure EGL for pbuffer and OpenGL ES 2.0.  We want enough RGB bits
    // to be able to tell if the frame is reasonable.
    int[] attribList = {
            EGL14.EGL_RED_SIZE, 8,
            EGL14.EGL_GREEN_SIZE, 8,
            EGL14.EGL_BLUE_SIZE, 8,
            EGL14.EGL_RENDERABLE_TYPE, EGL14.EGL_OPENGL_ES2_BIT,
            EGL14.EGL_SURFACE_TYPE, EGL14.EGL_PBUFFER_BIT,
            EGL14.EGL_NONE
    };
    EGLConfig[] configs = new EGLConfig[1];
    int[] numConfigs = new int[1];
    if (!EGL14.eglChooseConfig(mEGLDisplay, attribList, 0, configs, 0, configs.length,
            numConfigs, 0)) {
        throw new RuntimeException("unable to find RGB888+recordable ES2 EGL config");
    }
    // Configure context for OpenGL ES 2.0.
    int[] attrib_list = {
            EGL14.EGL_CONTEXT_CLIENT_VERSION, 2,
            EGL14.EGL_NONE
    };
    mEGLContext = EGL14.eglCreateContext(mEGLDisplay, configs[0], EGL14.EGL_NO_CONTEXT,
            attrib_list, 0);
    checkEglError("eglCreateContext");
    if (mEGLContext == null) {
        throw new RuntimeException("null context");
    }
    // Create a pbuffer surface.  By using this for output, we can use glReadPixels
    // to test values in the output.
    int[] surfaceAttribs = {
            EGL14.EGL_WIDTH, width,
            EGL14.EGL_HEIGHT, height,
            EGL14.EGL_NONE
    };
    mEGLSurface = EGL14.eglCreatePbufferSurface(mEGLDisplay, configs[0], surfaceAttribs, 0);
    checkEglError("eglCreatePbufferSurface");
    if (mEGLSurface == null) {
        throw new RuntimeException("surface was null");
    }
}