http://www.opengl.org/discussion_boards/ubbthreads.php OpenGL Dev - Beginner coding OpenGL.org Discussion and Help Forums - UBB.threads(tm) http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309916#Post309916 Posted by Furtano:
Hello, I have solid lighting bug in my battleship game. What bothers me the flickering water textures that you see in the video (second half). http://www.youtube.com/watch?feature=player_embedded&v=xeS-RYFeGGo Do you know why its flickering]]> Thu, 09 Feb 2012 12:52:27 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309914#Post309914 Posted by carsten neumann:
Please use [ code]/[ /code] (no space after '[') around source snippets to make them easier to read. [code] while(1) { time02 = time_now(); // Returns the time now count = (time02-time01)/1000; // Number of seconds since “time01” ]]> Thu, 09 Feb 2012 11:37:51 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309906#Post309906 Posted by menzel:
Hello, are you working with glActiveTexture() to select multiple texture units? Otherwise binding a texture will "hide" the last one. To use multiple textures in the same draw call you need to bind each texture to a different texture unit (selecte]]> Thu, 09 Feb 2012 06:55:35 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309904#Post309904 Posted by mhagain:
With another object between the camera and the wall you are also getting some overdraw. This may or may not be a big deal, but it can be alleviated by rendering objects from front to back and enabling backface culling.]]> Thu, 09 Feb 2012 05:56:08 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309897#Post309897 Posted by V-man:
Collect the data and store them in a array. Then render the points glBegin(GL_POINTS) for loop { glVertex3f(x, y, z) } glEnd() The above is old GL. With GL 1.5 and higher, use VBO. Have a look at the Wiki for VBO.]]> Thu, 09 Feb 2012 02:44:06 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309890#Post309890 Posted by xyzv.net:
Im working on a screen overlay in C++ with opengl, having an issue with window transparency & rendering polygons. This is done in xfce4. Its a standard window, with one modification to show the background as transparent. XMatchVisualInfo(dpy, De]]> Wed, 08 Feb 2012 23:59:10 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309847#Post309847 Posted by Aleksandar:
glMultiDrawElements(GL_QUADS, (int*)counts, GL_UNSIGNED_BYTE, (const void**)indices, 6); ]]> Tue, 07 Feb 2012 14:12:29 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309830#Post309830 Posted by Alfonse Reinheart:
[quote]Hi Alfonse, if i draw the sprite first and then the window, part of the sprite will appear on the screen if i move it from left to right in order to show it appearing inside the window gradually.[/quote] I mean on the same rendering frame.]]> Tue, 07 Feb 2012 08:44:43 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309795#Post309795 Posted by Dark Photon:
[quote=Alfonse Reinheart][quote]...with shaders we would still have to do multiple passes, so the problem of adding the texture contributions would still be there.[/quote]No, it wouldn't. As I said, your problem likely comes from some lighting thing ]]> Tue, 07 Feb 2012 01:42:54 PST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=309785#Post309785 Posted by Alfonse Reinheart:
[quote]We came to know that glfunc() will be implemented by a _mesa_func().[/quote] Says who? What happens within the boundary of an OpenGL call is up to the OpenGL implementation. You would only get some `_mesa_func` call if your implementation u]]> Mon, 06 Feb 2012 23:31:00 PST