Tagged Questions
2
votes
1answer
296 views
What is the recommended way to output values to FBO targets? (OpenGL 3.3 + GLSL 330)
I'll begin by apologizing for any dumb assumptions you might find in the code below since I'm still pretty much green when it comes to OpenGL programming.
I'm currently trying to implement deferred ...
2
votes
3answers
149 views
How many times fragment shader is executed?
I have an OpenGL code, with 3 different shader programs.
I have a simple question, I know fragment shaders are executed for every every fragment in the scene.
But is there a way using which we can ...
5
votes
1answer
825 views
How does one get adjacency information in a geometry shader?
If you use triangle_adjacency as the input type of a geometry shader, do you need to do something on the client side besides make the primitive mode triangle_adjacency?
Basically what I'm asking do ...
0
votes
1answer
85 views
GLSL billboard move center of rotation
I have successfully set up a billboard shader that works, it can take in a quad and rotate it so it always points toward the screen. I am using this vertex-shader:
void main(){
vec4 tmpPos = (MVP * ...
3
votes
2answers
308 views
MD5 vertex skinning problem extending to multi-jointed skeleton (GPU Skinning)
Currently I'm trying to implement GPU skinning in my project.
So far I have achieved single joint translation and rotation, and multi-jointed translation. The problem arises when I try to rotate a ...
0
votes
0answers
61 views
Triangle Clipping
I want to determine which part of a triangle is visible in a frustum in OpenGL, is there a way to get visible coordinates of triangle in the viewing frustum?
0
votes
2answers
201 views
Developing GLSL Shaders?
I want to create shaders but I need a tool to create and see the visual result before I put them into my game. As to determine if there is something wrong with my game or if it's something with the ...
1
vote
0answers
50 views
Geometry shader and triangle adjacency
I'm currently trying to change my project to use GL_TRIANGLE_ADJACENCY instead of GL_TRIANGLES.
Following this question, I have managed to construct my index buffer fine, but when it comes to the ...
2
votes
0answers
106 views
Shadow mapping does not work correctly using GLSL shaders
I'm a beginner in shadow mapping. I have in my scene two meshes : a cube and a floor. The scene is lighted by a single point light.
Here's for the following display the light properties :
...
3
votes
1answer
138 views
OpenGL FBO not being drawn to
In my project I'm trying to implement a deferred rendering system, problem is, I can't seem to get a second FBO to work.
UPDATE 1
Here is the FBO initialization code:
/// G-Buffer FBO
GLuint ...
3
votes
0answers
186 views
Jet engine exhaust shader [closed]
How would I create a jet engine exhaust effect, as shown in the image from Fzero GX below.
GLSL and OpenGL examples/solutions are prefered, though other resources are also welcome.
Requirements
...
6
votes
1answer
247 views
How would one draw many objects using the same VBO
I'm kind of stuck with this question for some time now, maybe because I don't know exactly what to search for, it might be a term I have not heard of yet as most tutorials ends after drawing one ...
0
votes
0answers
116 views
Shadow-casting through time acting in “reverse” before next notciable shadowmap update
question was re-written to better explain the problem
I have a scene of big thin parallelepiped, small cube, and a light source, all aligned on Y axis, like so:
_
| |
| |----[ ]----Light
|_|
Both ...
0
votes
1answer
214 views
Draw wireframe overlay of model in GLSL
I have a 3D model that has a GLSL script, and I want to draw a line on each border of its polygons in the fragment shader.
What should I do? Note: I am using Ogre3D, so I can't use OpenGL's ...
0
votes
0answers
97 views
Fragment shader not applying intended color to output
I started working with OpenGL recently, having previously worked on mods. I'm using GLFW3, GLEW, and whatever tutorials I can find. So far I've come up with this code:
//Headers
#include ...
