Activity Stream

Sort By	Time	Show
Recent Recent Popular Popular	Anytime Anytime Last 7 Days Last 7 Days Last 30 Days Last 30 Days	All All Photos Photos Forum Forums

05-16-2013, 07:34 PM

Alfonse Reinheart started a thread Quality of Implementation: Debug shader variable locations in OpenGL drivers

Now that OpenGL's debug context concept is a bit more well-defined (thanks to language in KHR_debug and the like), let's expand on this. NVIDIA...

20 replies | 480 view(s)

04-30-2013, 01:57 AM

kRogue started a thread Primitive Restart with a twist in Suggestions for the next release of OpenGL

As of OpenGL 3.x, primitive restart was added where when enabled if a particular user defined index was encountered, then the primitive creation was...

16 replies | 700 view(s)

05-13-2013, 01:34 PM

newbie_graphic_programmer started a thread glDrawElements with multi indexing buffers in OpenGL coding: beginners

Hello everybody, I have dealed with OpenGL 3.3 by the help of my old experiences in former versions of it for a few days and with long breaks. I...

14 replies | 363 view(s)

04-25-2013, 05:54 AM

sam_thedancer started a thread Multiple objects: single or multiple shaders? in OpenGL coding: beginners

This topic is actually a follow-on of an earlier posting of mine "Generating pipelines..." where I learned from thokra's responses how to generate...

14 replies | 591 view(s)

04-24-2013, 10:03 AM

frigopie started a thread Extracting a value from a fragment shader in OpenGL Shading Language

Hi all, I am implementing hdr light adaptation, until I found a small technical problem. I need to calculate this value inside a fragment shader...

10 replies | 526 view(s)

05-03-2013, 12:55 AM

yousry started a thread Spec. clarification: gl_VertexID, is the generation by glDrawElements optional? in OpenGL Shading Language

The Specification defines: gl_VertexID is a vertex language input variable that holds an integer index for the vertex. The index is impliclty...

13 replies | 422 view(s)

04-26-2013, 08:38 AM

jenny_wui started a thread Need some suggestion about reading and displaying an image file in OpenGL coding: beginners

Hello, I would like to read a jpeg file and display the pixel using glColor3f. I have extracted the pixel dimension from the image. Now my quetion...

11 replies | 403 view(s)

05-16-2013, 02:57 AM

debonair started a thread glVertexAttribP4uiv in OpenGL coding: beginners

i have been trying to use glVertexAttribP with GL_UNSIGNED_INT_2_10_10_10_REV but stuck up at some point. here is my code GLuint...

11 replies | 241 view(s)

04-25-2013, 09:50 AM

myzitta started a thread Problem with 3D stereoscopic view -- Please Help in OpenGL coding: advanced

Hi, I have developed some programs that are working well with 3D stereoscopic view. But I am in trouble with a program which is not originally mine...

7 replies | 490 view(s)

05-14-2013, 05:57 AM

wangyubuct started a thread What is the definition of gluLookAt? in OpenGL coding: beginners

The description of the gluLookAt is as follows: Let F=centerX-eyeXcenterY-eyeYcenterZ-eyeZ Let UP be the vector upXupYupZ. Then normalize as...

7 replies | 350 view(s)

05-03-2013, 11:11 AM

bananeeek started a thread Lighting a surface in OpenGL coding: beginners

I've been following some tutorials about setting a simple source of light, but I still can't make it :S let's say I have a simple surface in 3D ...

7 replies | 319 view(s)

04-26-2013, 06:26 PM

eodabash started a thread GL_MULTISAMPLE and square/round points in OpenGL coding: advanced

I learned somewhat recently about this behavior described in the GL_ARB_multisample spec: I'm working in an older fixed-function codebase and...

7 replies | 491 view(s)

05-01-2013, 04:17 PM

Ygyaxthe3rd started a thread glMatrixMode() is causing my program to crash in OpenGL coding: beginners

I am trying to create a program that loads an image into memory and doesn't crash, but it seems that whenever I load an image the OpenGL context...

9 replies | 379 view(s)

04-30-2013, 08:11 AM

Tectu_ started a thread LCD simulator with Xlib in OpenGL coding: beginners

Hello folks, I am developing a library to interface graphical displays (TFTs) and touchscreens with microcontrollers, also providing a simple GUI...

9 replies | 346 view(s)

05-11-2013, 01:55 PM

genzm19 started a thread Calculating all pixels in a frame in User Hardware, Software, & Gaming Help

Hy, I didn't know if this is the right forum or the right category to post this thread, so please move this thread if necessary, or point me to a...

9 replies | 334 view(s)

05-18-2013, 03:40 PM

troels_y started a thread Invalid qualifiers 'in' in global variable in OpenGL coding: beginners

Hi, i'm trying to compile a simple vertex shader, but I keep getting this error: "ERROR: 0:2: Invalid qualifiers 'in' in global variable context"....

9 replies | 233 view(s)

05-12-2013, 08:03 PM

Ygyaxthe3rd started a thread glimg is breaking the opengl context? in OpenGL coding: beginners

My code is breaking when I use the glMatrixMode( GL_PROJECTION ) command, and I think this is because the context is breaking when I try to load a...

9 replies | 311 view(s)

04-28-2013, 04:12 PM

Aleksandar started a thread GLSL function execution time estimation in OpenGL Shading Language

On the first glance the following question looks silly, but after trying to answer on it I realized it is quite difficult (or even impossible). ...

6 replies | 392 view(s)

05-06-2013, 10:32 AM

qawded started a thread Glut Callbacks..... in OpenGL coding: beginners

hello everyone....this may be a very basic question but I was wondering that whether the sequence in which we register our glut callbacks...

8 replies | 343 view(s)

05-15-2013, 09:21 PM

Ygyaxthe3rd started a thread glimg image dimesions in OpenGL coding: beginners

I can't seem to figure out how to use glimg to find the width and height of an image that has been loaded into an image set. I know it uses the...

9 replies | 232 view(s)

05-13-2013, 05:06 AM

kRogue started a thread glBlendEquationSeparateRGBA in Suggestions for the next release of OpenGL

Currently, the alpha in color blending has far more flexible roles that the other channels, RGB. This is actually 2 parts: First part, a new...

6 replies | 328 view(s)

05-07-2013, 02:55 PM

CoffeeandCode started a thread .OBJ texture coordinates aren't mapped correctly in OpenGL coding: beginners

This is a cross-post from game-dev because it seems more general to graphical programming than game development. I have written a simple .obj...

7 replies | 314 view(s)

05-07-2013, 03:40 AM

nguyenc started a thread perso3D_chung free easy openGL 3D character model animation and edit in OpenGL under Windows

i have written an open source application in freebasic to load and edit custom 3D animated character models directly into openGL1.2 if you are...

7 replies | 382 view(s)

05-02-2013, 07:33 AM

Registrar started a thread VBO not rendering in OpenGL coding: beginners

I'm on Windows 7 and using VC++ 2010. I'm trying to load and render a mesh using VBOs. I've checked that all the indices and vertex values are...

7 replies | 354 view(s)

04-26-2013, 04:19 PM

nice87day started a thread Link Error: glew in OpenGL under Windows

Hello, IDE: code::blocks 10.05 compiler: gnu gcc code: #define GLEW_STATIC #include <GL/glew.h>

6 replies | 343 view(s)

04-27-2013, 02:33 AM

sam_thedancer started a thread Shader subroutines: when to call glGetSubroutineUniformLocation()? in OpenGL coding: beginners

Greetings: I am learning shader subroutines and wrote a toy program along the lines of one in the shading language cookbook (I also referred to the...

6 replies | 318 view(s)

05-05-2013, 04:04 AM

ReturnVoid started a thread Trying to Pivote/Rotate matrix/view? in OpenGL coding: beginners

hi, Have been trying for a while now to do this, but it doesn't seem to be working as I wish: I have the following points (as an example);...

5 replies | 304 view(s)

05-08-2013, 05:11 AM

intenseza started a thread Loading Texture - Taoframework. in OpenGL coding: advanced

Hey all. I've been searching for hours on how to load an image and apply a texture to my particles with no resolve. The following is my code which...

7 replies | 279 view(s)

05-02-2013, 12:43 PM

_Syndic started a thread Terrain Generation / Displaying terrain in OpenGL coding: beginners

Well I've pretty much got this figured out now I think except in this tutorial I'm following the author leaves out a vital detail; For the Triangle...

5 replies | 375 view(s)

05-07-2013, 07:34 PM

Taylor Holliday started a thread Strategies for optimizing OpenGL-based animated/zoomable 2D UI rendering in OpenGL coding: advanced

Hey! I'm trying to improve the graphics performance of my app (http://audulus.com if you're curious). Here's a screen shot: I've built a scene...

6 replies | 360 view(s)

The Industry's Foundation for High Performance Graphics

from games to virtual reality, mobile phones to supercomputers