Native Development

[nathanpc]

I'm reading the OpenGL ES 2.0 Programming Guide and on their examples the use a helper library that they've created called esUtil.h (which has a version for BlackBerry), that is contained on the book examples repository, the problem is that now I want to handle touch events, but I don't know how to make my code compactible with the bbutil.h initialization so I can take advantage of the touch and at the same time have esUtil.h so I can take advantage of functions like esRegisterDrawFunc, esRegisterUpdateFunc and esMainLoop, which I don't know how to do with bbutil. Here's my code:

#include <stdlib.h>
#include <stdio.h>
#include "esUtil/esUtil.h"

// BlackBerry stuff.
#include "bbutil.h"
#include <bps/bps.h>
#include <bps/screen.h>

// Helpers.
#include "helpers/global.h"
#include "helpers/shaders.h"

// Scene.
#include "scene/scene.h"

int main(int argc, char *argv[]) {
	ESContext esContext;
	UserData userData;

	esInitContext(&esContext);
	esContext.userData = &userData;

	if (!esCreateWindow(&esContext, TITLE, WINDOW_WIDTH, WINDOW_HEIGHT, ES_WINDOW_RGB))
		return 0;

	if (!init(&esContext))
		return 0;

	esRegisterDrawFunc(&esContext, drawScene);
	esRegisterUpdateFunc(&esContext, update);

	esMainLoop(&esContext);

	return 0;
}

 Any suggestions?

[BGmot · Accepted solution]

esMainLoop() just calls QNX implementation MainLoop defined in esUtil_qnx.c

void MainLoop(ESContext *esContext)
{
    for (;;)
    {
        handle_events();
        if (__qnx.shouldExit)
                break;

        // Call update function if registered
        if (esContext->updateFunc != NULL)
            esContext->updateFunc(esContext, getElapsedTime() / 1000.0f);
        if (esContext && esContext->drawFunc)
            esContext->drawFunc(esContext);
    }

    screen_stop_events((screen_context_t) esContext->screen_context);

    terminateGraphics(esContext);

    bps_shutdown();

    screen_destroy_context((screen_context_t) esContext->screen_context);
}

 So, apparently you should be looking at modifying handle_events() and deep down handleScreenEvent() (also defined in esUtil_qnx.c.

Good luck. OpenGL is very interesting (and powerful)...