Tagged Questions
OpenGL is a graphics standard and API which targets the desktop and workstation markets. It is designed to be easy to accelerate with dedicated computer hardware, and hence most implementations give greatly improved performance over traditional software rendering. Currently, OpenGL is used for applications like CAD software and computer games. It is also cross-platform. The OpenGL standard is controlled by the Khronos group, which also controls OpenGL ES.
3
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516 views
Atmospheric Scattering
I'm trying to implement atmospheric scattering based on Sean O`Neil algorithm that was published in GPU Gems 2. But I have some trouble getting the shader to work. My latest attempts resulted in: ...
2
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0answers
68 views
Raymarching artifacts
I was playing with raymarching using distance fields in GLSL sandbox and got stuck with a strange problem with artifacts.
Click here and take a look at the spheres generated in corners, they have ...
2
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0answers
191 views
OpenGL font rendering
I am trying to make an openGL text rendering class using FreeType.
I was originally following this code but it doesn't seem to work out for me. I get nothing reguardless of what parameters I put for ...
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votes
0answers
206 views
Sampling from depth texture causes shader to stop working
I'm currently having issues with depth textures. When I sample from a depth texture it causes my other samplers to fail. For example, when I set gl_FragColor manually the depth buffer is correct. I ...
2
votes
0answers
130 views
Different types of memories which a graphics card has
I've been googling this around and yet nothing showed up but some articles from middle ages which were talking about Gforce mx and ... . My question is just this: what are the different memories in a ...
1
vote
0answers
45 views
How can I fix these errors with Panda3D's sample projects?
I just installed the latest Panda3D packages on a Mint 12 32-bit virtual machine. Then I downloaded and configured Eclipse and tried to run the Asteroids sample project. The window is created ...
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0answers
71 views
Can one use OpenGL ES from Google Go?
I've recently used Google's Go language and was impressed by its great support for parallelism. I'd like to try Go for a simple game -- just a test-case -- and I'm wondering if I can use OpenGL ES ...
0
votes
0answers
59 views
Detect two specific objects collision with bullet physics
I have got some problem with defining collision between objects in my game using bullet physics.
I know that objects are colliding with each other simultaneously and I don't have to do anything more. ...
0
votes
0answers
64 views
Opengl-es picking object
I saw a lot of picking code opengl-es, but nothing worked. Can someone give me what am I missing?
My code is (from tutorials/forums)
Vec3 far = Camera.getPosition();
Vec3 near = ...
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0answers
41 views
Custom Parallax Class performance questions ( Related to Cocos2d or OpenGL)
Looking for best practices in performance! :)
I would like to know if my idea is a good approach trying to develop a custom Parallax system in Cocos2d ( although in terms of performance could be ...
0
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0answers
246 views
android game using bullet and libgdx
i'm developing a android project for school and i'm currently using libgdx for rendering. It performs quite well, but it lacks a 3d physics library. So i searched and found that Bullet physics engine ...
0
votes
0answers
103 views
3d collision detection on non flat surface
i am developing a game which needs an accurate collision detection algorithm, when a object travels down a slope which isn't flat. To be more precise i need to simulate a skier who travels down a ...
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votes
0answers
110 views
How can I place a ProgressBar in Android using Cocos 2d?
I want to place a horizontal progress bar in my Android application and I want to change its progress color. I used the following code, but the progress bar is not being displayed.
CCProgressTimer ...
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votes
0answers
44 views
sdl stencil buffer
I am trying to use the stencil buffer for rendering reflection and am working with SDL and OpenGL.
When I give the command SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE,8),I get a return value of 0 ...
0
votes
0answers
66 views
Unresolved external symbol __imp____glewGenerateMipmap
This error is given by Visual Studio 2010, when I want to compile my C++ code.
I have added 'glew32.lib' and 'freeglut.lib' in Additional Dependencies, both release and debug. Also included the ...
