Questions tagged [frame-buffer]
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31 questions
0 votes
0 answers
48 views
Need help with portal rendering
I've been working on this hobby game engine in C and Sokol with CGLM for a short while now, and I've ran into a bit of a snag regarding portal rendering. It works as it should when the player camera's ...
- 1
0 votes
1 answer
141 views
what technicalities involved in screenshot process? what is the dependency of screen properties in the screenshot of an image?
If we take screenshot of image displayed on a monitor screen, then does it take only framebuffer data? Does the framebuffer data is independent of display screen properties like contrast, brightness? ...
- 1
0 votes
1 answer
334 views
Am I risking damaging my GPU?
I have written a relatively simple interactive C program using OpenGL 4.4 with a vertex shader and a fragment shader, running in the CodeBlocks IDE on Windows. I included an FPS counter basically as ...
- 213
0 votes
1 answer
490 views
Combining multiple textures within Framebuffer to use them in layered rendering
I have a scenario with several cameras. Each hold its own color and depth texture. Because the geometry of the environment is expansively procedural generated, I would like to combine cameras with ...
- 1,493
1 vote
1 answer
1k views
glBlitFramebuffer does not copy all textures
The setup I have a working bloom shader implemented which creates a fbo with two textures attached to it. The first texture holds the entire scene The other only displays objects which are supposed ...
- 27
2 votes
1 answer
513 views
draw on cubemap with help of geometry shader each triangle covers each cubemap face (why??)
I want to do some complicated stuff but have problems with my geometry shader / FBO bindings. To hold it as easy as possible I reduced the code to a minimum. If this works, I could continue the hard ...
- 1,493
2 votes
1 answer
311 views
Can the framebuffer in OpenGL jargon or its color buffer end up being the one and the same memory location as the one scanned by a display controller?
My understanding is: the 'framebuffer' in OpenGL is a collection of buffers: many (due to swapping or stereo rendering) color buffers, (only one?) z-buffer and (only one?) stencil buffer; each OpenGL ...
- 21
0 votes
1 answer
188 views
Framebuffer not detecting image
The command, fb-test -f 0 generates and displays a test pattern on the screen. But, the command, ...
- 101