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Questions tagged [framebuffer]

In general a framebuffer is a graphic hardware-independent abstraction layer used to display output to a monitor or display.

Resources:

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RFB Protocol : Send incremental framebuffer update

I am writing a RFB server which is able to communicate with RFB Client. The main question is as follows: Currently i am able to capture and send the entrire screen to the client in RAW format. The speed is damn slow for this. Also, the client is…
user2419541
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Multiple framebuffers and textures not working on intel drivers

I'm writing an application using PyOpengl and PySide. My main machine is installed with ubuntu and an nvidia card (proprietary drivers), the premise is just to tell that the application is working properly in this setting. I'm testing this…
pygabriel
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Render buffer in Open GL ES on iPhone

When drawing with Open GL ES one creates a framebuffer, attaches it to the context, creates a renderbuffer, attaches it to the context and, finally, attaches the renderbuffer to the framebuffer. My question is: Why is it that the renderbuffer is…
Matt N.
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glBindFramebufferOES - documentation?

I am trying to find the reference pages / documentation of the method glBindFramebufferOES(and related directives) and spent a good amount of time googling. I am a registered iPhone developer and searching the resources provided by Apple in the Dev…
Matt N.
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OpenGL ping ponging with two textures on the same framebuffer

I'm trying to render to two textures, rendering from the first to the second, and then from the second to the first etc. The problem is that when I'm rendering the first texture to the second, it works fine but rendering the second to the first…
user978817
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glGenFramebuffers makes program fail to run

I have reinstalled devcpp 4.9.9.2 on windows xp virtualbox and installed glut and glew. My original program just used glut, and shows some spheres bouncing around a room. My problem is that once I add in the line glGenFramebuffers(1,…
Adam Kenworthy
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Rendering to framebuffer and screen

I am trying to render to an fbo and then use that texture as an input to my second render pass for post processing, but it seems that glClear and glClearColor affect the texture that has been rendered to. How can I make them only affect the display…
Afiefh
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Android Capture Surface Flinger

Many devices do not store the final display data in framebuffer, hence screen capture methods will not work on those devices. I want to know how can get the final composition data from Surface Flinger? If we can achieve the capture from surface…
blganesh
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Using framebuffer device as a normal display (USB to HDMI adapter) on Linux

I have a USB3 to HDMI adapter based on UFX7000 SMSC chipset. It has a driver in the Linux kernel, but it makes a framebuffer device: usb 2-1.1.1: SMSC UDX USB device /dev/fb1 attached. 800x600 resolution. Using 940K framebuffer memory Is there an…
Riklaunim
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How to read OpenGL color buffer and depth buffer quickly?

I have to read color buffer and depth buffer every frame. I know the glReadPixels function is very slow, so I would like to know if there is a faster way to do the reading.
user1230224
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Why program still don't take screenshot after getting "su"?

I push the button and program get SU, but png file is 0 bytes weight. Logcat says Permission denied: can't read framebuffer pid=12844 uid=10087. So why that's so. My phone is rooted, program already get su. What's wrong? Button btn = (Button)…
user2177105
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Fragment shader rendering to off-screen frame buffer

In a Qt based application I want to execute a fragment shader on two textures (both 1000x1000 pixels). I draw a rectangle and the fragment shader works fine. But, now I want to renderer the output into GL_AUX0 frame buffer to let the result read…
Vereb
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OpenGL merge multiple framebuffer

I have a 2D scene splitted in multiple z levels. For every z level i got a framebuffer. How can i merge these framebuffer into a final framebuffer, which will get displayed (whole scene) The idea behind this: most animation (etc) will happen in…
DDrohl
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How do one calculate the fb_videomode parameters in linux kernel?

I would like to write a driver to http://www.trulydisplays.com/tft/specs/3.5in%20480x800%20TFT480800-25-E%20Spec.pdf How do I calculate all the following params: struct fb_videomode { const char *name; /* optional */ u32 refresh; …
0x90
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using glTexture in a shader

I'm using openGL and what I want to do is render my scene to a texture and then store that texture so that I can pass it into my fragment shader to be used to render something else. I created a texture using glGenTexture() and attached it to a…
user1782677
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