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Questions tagged [frame-buffer]

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1
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1answer
35 views

GBuffer: Framebuffer with different texture format types?

I rely on this answer from Nathan Reed: How much precision do I need in my G-Buffer? It is proposed to use two different texture formats for one Gbuffer. However as far as I know, color texture ...
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0answers
24 views

How to capture frames in a MacOS MTKView for recording to a video

I have created a 3D model of a local outdoor performance space and I have an app that uses Metal on MacOS 10.14.2 to display the model. I want to create an animation by flying the camera around the ...
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0answers
24 views

debugging VGA signal timings for 640x480 @ 60hz

I am trying to get started with implementing a basic display (i.e a simple red screen) onto a VGA monitor by programming a Xilinx spartan3a fpga for the same. I have studied about the signal timings ...
2
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1answer
173 views

using default depth buffer in off-screen framebuffer

I'm trying to implement Weighted, Blended Order-Independent Transparency There are three passes: 3D opaque surfaces to a primary framebuffer 3D transparency accumulation to an off-screen framebuffer ...
3
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1answer
54 views

If the OS uses a frame-buffer with potentially different textures being displayed each frame why dont we?

At least on iOS every frame you are likely to get a completely new texture that you need to draw to due to the OS switching between a couple textures each frame. My question is essentially if the OS ...
3
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1answer
81 views

What happens with the framebuffer after the fragment shader is done?

I'm wondering what happens with the framebuffer between the time that the fragment shader is done, and the time when it appears on my screen. Is my understanding correct if I assume that the ...
4
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3answers
763 views

Why use image load / stores instead of FBOs

One example of Image Load / Stores that I have seen could be done using framebuffers instead of Image Load / Stores. Framebuffers have been available longer in OpenGL and so my question is: Why ...
6
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1answer
1k views

What is the difference in overlay and framebuffer?

I have been trying to understand display and graphics. I feel that it's hard to make a logical image of the terms. I understand this: Frame buffer is a dedicated memory that has the image/video/...
4
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1answer
159 views

Why do games only allow certain resolutions?

Only a few games have resizable windows when running in full screen mode. All others have a finite fixed set of allowed resolutions. But why? I see some reasons, but none of them seems to be that ...
2
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1answer
302 views

LWJGL 3 render to texture offscreen without display

At the moment, I render everything in my OpenGL application to a single framebuffer (color only, no depth buffer). I then go from the texture ID and read out some data to use it. My problem is, in the ...
1
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1answer
289 views

OpenGL back and front buffer - counting and adjusting the number of red pixels before displaying to screen

I'm writing a function that reads the number of red pixels on the left and right halves of the screen, it makes adjustments while the difference between the number of red pixels falls outside of a ...
6
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1answer
230 views

Artifacts when gamma correcting

Doing post-process gamma correction is showing texture artifacts, here is a small example on a skybox: The first image is gamma correcting on the skybox shader and seems correct, the lower is doing ...
1
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1answer
409 views

How can I send custom bitmap to frame buffer?

I was trying to make a CPU-based ray tracer but I know after all the calculation I will end up with an array of pixels. I don't know how to paint it on the screen. What are the various ways to do that?...
7
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1answer
109 views

How can I intercept and filter all frames coming out of SteamVR?

I'm trying to investigate the effect of certain image operations on how VR scenes are perceived. To do this, I'd like to run an off-the-shelf SteamVR application, capture the frames as they come out ...