Graphics Reference
In-Depth Information
Example 3-5
Creating an EGL Pixel Buffer
EGLint attribList[] =
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT_KHR,
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 6,
EGL_BLUE_SIZE, 5,
EGL_DEPTH_SIZE, 1,
EGL_NONE
};
const EGLint MaxConfigs = 10;
EGLConfig configs[MaxConfigs]; // We'll accept only 10 configs
EGLint numConfigs;
if ( !eglChooseConfig( display, attribList, configs, MaxConfigs,
&numConfigs ) )
{
// Something did not work ... handle error situation
}
else
{
// We have found a pbuffer-capable EGLConfig
}
// Proceed to create a 512 x 512 pbuffer
// (or the largest available)
EGLSurface pbuffer;
EGLint attribList[] =
{
EGL_WIDTH, 512,
EGL_HEIGHT, 512,
EGL_LARGEST_PBUFFER, EGL_TRUE,
EGL_NONE
);
pbuffer = eglCreatePbufferSurface( display, config, attribList);
if ( pbuffer == EGL_NO_SURFACE )
{
switch ( eglGetError ( ) )
{
case EGL_BAD_ALLOC:
// Not enough resources available; handle and recover
break;
case EGL_BAD_CONFIG:
// Verify that provided EGLConfig is valid
break;
(continues)
