Strange missing texture

[Kajos]

Hi,

I would like to post a potential bug, I have the newest drivers for a AMD A10 5800K setup. Perhaps it is indeed a problem with AMD's apu; I read somewhere it happened in Modern Warfare as well (random read on the internet).

     

for (int side = 0; side < 2; side++)
        {
            
            glPushAttrib(GL_ALL_ATTRIB_BITS);
            glBindTexture(GL_TEXTURE_2D, 0);
            glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, modelsFboId[side]);

            glViewport(0,0,screenWidth,screenHeight);
            glMatrixMode(GL_PROJECTION);
            glLoadIdentity();
            gluPerspective(SCREEN_FOV, SCREEN_RAT, NEAR, FAR);
            glMatrixMode(GL_MODELVIEW);
            glLoadIdentity();
            glShadeModel(GL_SMOOTH);
            glHint(GL_PERSPECTIVE_CORRECTION_HINT,
                GL_NICEST);
            glDisable(GL_BLEND);
            glEnable(GL_DEPTH_TEST);
            glDepthFunc(GL_LESS);
            glDepthMask(true);
            glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
            glClearDepth(1.0f);
            glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

            glLoadIdentity (); 

            camera.look();
                
            drawObject();

            glDisable(GL_DEPTH_TEST);
            glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);

            glPopAttrib();
        }

I loop over two fbo's which are both created in a loop as well. The fbo's work fine, however the second iteration the texture doesn't want to bind. I tried switching to different active texture for the second iteration, I have a shader which I disabled, I tried setting the clientactivetexture as well. If I skip the first iteration nothing changes for the second If I skip the first iteration the second works. When I attach a color instead of a texture the object DOES show (it doesn't show at all with the texture bound).

I tried tracking down this bug for a good two days now to no avail.


 

    for (int side = 0; side < 2; side++) {
            modelsFboId[side] = glGenFramebuffersEXT();										
            modelsFboTextureId[side] = glGenTextures();										
            modelsDepthRenderBufferId[side] = glGenRenderbuffersEXT();

            glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, modelsFboId[side]); 	

            glBindTexture(GL_TEXTURE_2D, modelsFboTextureId[side]);								
            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);						
            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);			
            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, screenWidth, screenHeight, 0,GL_RGBA, GL_INT, (java.nio.ByteBuffer) null);	
            glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,GL_COLOR_ATTACHMENT0_EXT,GL_TEXTURE_2D, modelsFboTextureId[side], 0); 

            glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, modelsDepthRenderBufferId[side]);         
            glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, screenWidth, screenHeight);
            glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,GL_DEPTH_ATTACHMENT_EXT,GL_RENDERBUFFER_EXT, modelsDepthRenderBufferId[side]); 
            glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
          }

I do not get any errors out of opengl. I will to try to recreate the bug in a project and post it if that is necessary.

Thanks for the help in advance, this is really frustrating to me!

EDIT: Cleaned up matrix inits
EDIT2: I tried this with another computer as well, exact same problem.

[Kajos]

Bump

[Fool Running]

Bump

LOL, this isn't a very active forum. Give us more then 20 hours to respond. 

As to your problem, it looks very strange to me that you are clearing the screen (and doing all your perspective settings, etc.) in your loop.
Try something more like:

glViewport(0,0,screenWidth,screenHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(SCREEN_FOV, SCREEN_RAT, NEAR, FAR);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glShadeModel(GL_SMOOTH);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glDisable(GL_BLEND);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glDepthMask(true);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepth(1.0f);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glLoadIdentity (); 
camera.look();

for (int side = 0; side < 2; side++)
{
            glPushMatrix(); // You may not need the push/pop of the matrix depending on what your draw code does.
            glPushAttrib(GL_ALL_ATTRIB_BITS);
            glBindTexture(GL_TEXTURE_2D, 0);
            glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, modelsFboId[side]);

            drawObject();

            glPopAttrib();
            glPopMatrix();
}

glDisable(GL_DEPTH_TEST);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);

[Kajos]

Hi, no matter, I solved it! The loop is fine I think, it needs to render to two different fbo's, however I found that Slick needs to unbind textures for some (unknown to me) reason. TextureImpl.unbind() solved it.