Questions tagged [frame-buffer]
The frame-buffer tag has no summary.
32 questions
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Multiple color attachments receiving color although only one being written to
I have a 2D texture array of 8 layers attached to 8 color attachments of an FBO as so:
...
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49
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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 ...
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How can I accumulate past 256 in a framebuffer texture?
As a way to estimate screenspace density of a set of particles, I'm trying to do some splatting: render a circle of fixed radius around each particle, accumulating, to get a count of how many ...
- 111
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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? ...
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331
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Warn GL_INVALID_OPERATION: Only array uniforms may have count > 1
I want to implement shadows in my already existing glmatrix-based project.
You can see my project's github source. It is classic scebe object based structure. I have draw functions, I render recalls.
...
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335
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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 ...
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298
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Rendering multiple camera transforms of the same geometry at once
Currently I have a basic (OpenGL 3.3) rendering scheme using a simple depth vertex shader to generate shadow maps for a scene. I don't care about having a large number of lights in the scene so it is ...
- 111
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494
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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 ...
- 1,503
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How big is a multi-sampled FBO than a regular FBO with the same resolution?
Is it proportional to the samples count?
Whats the performance difference between binding a multi-sampler and a regular sampler?
- 103
1
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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
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1
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603
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Can’t blit framebuffer to backbuffer
I'm just starting to work with framebuffer objects and am having trouble trying to figure out why I can't blit my framebuffer to my viewport. I know my framebuffer has data drawn to it since I can ...
- 101
2
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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 ...
- 1,503
1
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544
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OpenGL Framebuffer with multiple Depthbuffers inside
I am trying to put multiple depthbuffers into one Framebuffer.
I want to use VR and render both eyes at the same time:
that means, in the geometry stage I want to clone the incoming triangle to two ...
- 1,503
2
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1
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313
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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
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How to display an in-memory framebuffer
I'm planning to write a small software rendering engine (before anyone asks, it's kind of a learning/scientific experiment for me).
Before writing any code, I'm already stuck at the very first step: ...
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