Rendering A Fullscreen quad using an orthographic viewport.

Code-R · 2005-10-22T11:30:23

After rendering my scene to a texture using FBOs, I want to setup a fullscreen quad that I overlay the image over. the thing is, I don't see anything except when I translate with some -Z value. what would be causing that? code: void FinalizeScene() { glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); glLoadIdentity(); glTranslatef(0,0,-1); glDepthFunc(GL_ALWAYS); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glClientActiveTextureARB(GL_TEXTURE0); glEnable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, FrameTexture); glGenerateMipmapEXT(GL_TEXTURE_2D); glDisable(GL_LIGHTING); glColor4f(1,1,1,1); glOrtho(0, ViewportWidth, 0, ViewportHeight, -1, 1); glBegin(GL_QUADS); glTexCoord2f(0,0); glVertex2f(0,0); glTexCoord2f(0,1); glVertex2f(0,ViewportWidth); glTexCoord2f(1,1); glVertex2f(ViewportHeight, ViewportWidth); glTexCoord2f(1,0); glVertex2f(ViewportHeight,0); glEnd(); SwapBuffers(hDC); glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FrameBufferObject); }