actually the results are returned in a GLuint, (also can be GLint for a different call) so it looks like to me it does pass the number of fragments just like you want.

also it looks like not a single person on the entire internet has posted about these new extensions... so here they are set up properly...which is not documented anywhere as far as i can tell... you can imagine how they would go in your code from this little sudo code here:

import UIKit/UIKit.h

import GLKit/GLKit.h

import "GLProgram.h"

GLuint testBox,hasBeenTested,theParams;

//...

glGenQueriesEXT(1, &testBox);

glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, testBox);


//... draw an object .......

glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);

glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_AVAILABLE_EXT, &hasBeenTested);

if (hasBeenTested) glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_EXT, &theParams);

glDeleteQueriesEXT(1, &testBox);

if (!theParams)  object is hidden;  don't draw next time;

The results are returned in a GLuint, (also can be GLint for a different call) unfortunately, the result is always a 0 or a 1, maybe they will change it to register frags in the future.

also it looks like not a single person on the entire internet has posted about these new extensions... so here they are set up properly...which is not documented anywhere as far as i can tell... you can imagine how they would go in your code from this little sudo code here:

import UIKit/UIKit.h

import GLKit/GLKit.h

import "GLProgram.h"

GLuint testBox,hasBeenTested,theParams;

//...

glGenQueriesEXT(1, &testBox);

glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, testBox);


//... draw an object .......

glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);

glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_AVAILABLE_EXT, &hasBeenTested);

if (hasBeenTested) glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_EXT, &theParams);

glDeleteQueriesEXT(1, &testBox);

if (!theParams)  object is hidden;  don't draw next time;

actually the results are returned in a GLuint, (also can be GLint for a different call) so it looks like to me it does pass the number of fragments just like you want.

also it looks like not a single person on the entire internet has posted about these new extensions... so here they are set up properly...which is not documented anywhere as far as i can tell... you can imagine how they would go in your code from this little sudo code here:

import UIKit/UIKit.h

import GLKit/GLKit.h

import "GLProgram.h"

GLuint testBox,hasBeenTested,theParams;

...........

glGenQueriesEXT(1, &testBox);

glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, testBox);

... draw an object .......

glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);

glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_AVAILABLE_EXT, &hasBeenTested);

if (hasBeenTested) glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_EXT, &theParams);

glDeleteQueriesEXT(1, &testBox);

if (!theParams)  object is hidden;  don't draw next time;

actually the results are returned in a GLuint, (also can be GLint for a different call) so it looks like to me it does pass the number of fragments just like you want.

also it looks like not a single person on the entire internet has posted about these new extensions... so here they are set up properly...which is not documented anywhere as far as i can tell... you can imagine how they would go in your code from this little sudo code here:

import UIKit/UIKit.h

import GLKit/GLKit.h

import "GLProgram.h"

GLuint testBox,hasBeenTested,theParams;

//...

glGenQueriesEXT(1, &testBox);

glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, testBox);


//... draw an object .......

glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);

glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_AVAILABLE_EXT, &hasBeenTested);

if (hasBeenTested) glGetQueryObjectuivEXT(testBox, GL_QUERY_RESULT_EXT, &theParams);

glDeleteQueriesEXT(1, &testBox);

if (!theParams)  object is hidden;  don't draw next time;