All Questions
Tagged with depth-buffer glsl
11
questions
0
votes
1
answer
674
views
Why does reading my depth texture in GLSL return less than one?
I've created a depth texture in OpenGL (using C#) as follows:
...
- 579
3
votes
1
answer
2k
views
Difference between linear and logarithmic z-buffer
I've searched about this topic for awhile and i couldn't find it on google. I've come across several ways to avoid z-fighting which are linear z-buffer, logarithmic z-buffer and reversed z-buffer. I ...
- 999
0
votes
1
answer
264
views
OpenGL: strange thing with depth and text rendering
TL;DR I render a scene with M,V,P matrices as always. Than I render something (in this case - text) without any matrices and using separate shaders pair on coordinates with Z = -1. Somehow it's ...
1
vote
1
answer
2k
views
Raymarching on a Hi-Z buffer in GLSL
So I'm trying to implement Screen Space Reflections using a Hierarchical z-Buffer in GLSL. I'm following the approach from GPU Gems 5 and the Frostbite presentation linked here ("Stochastic Screen-...
- 410
3
votes
1
answer
347
views
Strange depth map projection
I'm trying to implement depth-only SSAO and for that, I render a depth map into a texture and pass it to my SSAO shader which then uses it.
The problem is that when I try to output the depth map ...
- 301
2
votes
1
answer
13k
views
Getting the real fragment depth in GLSL
I am trying to write a simple GLSL shader that just renders the real (not normalized) depth of a fragment as a floating point value.
So far, I've figured out how to get the depth of a vertex, and ...
- 3,637
0
votes
2
answers
2k
views
GLSL light coloring blocked surfaces
I have created a very simple lighting shader. It currently only supports point lights, but it lights up surfaces that are completely blocked from the light. I know why, but I want to know how I can ...
- 143
4
votes
1
answer
246
views
Forcing early-z with raytracing
I'm working on a GLSL raytracer, and I need to be able to edit gl_FragDepth in the FS. However, doing so disables early-z culling. The scene is rendered front-to-back and the FS can only push points ...
- 71
6
votes
1
answer
2k
views
Can I use the default depth buffer when drawing to FBO?
How to attach default depth buffer to FBO?
How to use depth renderbuffer buffer attached to FBO (after drawing to it) as a default depth buffer?
Basically I want to use the same depth buffer for both ...
- 467
4
votes
1
answer
3k
views
Renderbuffer to GLSL shader?
I have a software that performs volume rendering through a raycasting approach. The actual raycasting shader writes the raycasted volume depth into a framebuffer object, through gl_FragDepth, that I ...
- 1,384
4
votes
2
answers
6k
views
computing gl_FragDepth
I am trying to draw spheres using a billboard, so I have a normal map with a z component that I am sampling in my fragment shader. I just need to add this z component to the depth of my fragment to ...
- 6,977