In general a framebuffer is a graphic hardware-independent abstraction layer used to display output to a monitor or display.
Resources:
Questions tagged [framebuffer]
1142 questions
0
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3 answers
DirectFB : Installing version 1.7.0 installs libdirectfb-1.2.so.9 but not libdirectfb-1.7.so.0
I recently downloaded DirectFB code version 1.7 from http://directfb.org/downloads/Core/DirectFB-1.7/DirectFB-1.7.0.tar.gz. After configuring ,compilation and installation I see the below files:
# ls -l /usr/lib/*directfb*
lrwxrwxrwx 1 root root …
Programmer
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1 answer
Porting C++ OpenGL Framebuffer Code To LWJGL - What Class Do I Use?
I am trying to use this tutorial to perform shadow mapping in LWJGL. What I notice is that LWJGL has three classes with all of the framebuffer functions that this tutorial uses: ARBFramebufferObject, EXTFramebufferObject, and GL30.
I don't know…
Name
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1 answer
problems generating texture
Update 2 works, it was a wrong allert
Update 2 (using vbo vertex- and fragment-shaders) but it still don't works
#include "GL/glxew.h"
#include "GL/glext.h"
#include "GL/glu.h"
#include "GL/freeglut.h"
#include
GLint attribute;
GLuint…
user2798943
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1 answer
Filling the frame buffer in external ram is very slow my embedded system
I am updating frame buffer in the external ram as and when I get the character codes from the UART by referring a font data base.
The frame buffer size is around 600kb and it takes around 1.5 seconds to fill it completely without using DMA. The…
Akshay
- 11
0
votes
1 answer
render offscreen framebuffer texture to main framebuffer
I'm trying to work with a framebuffer object that I have no control of how it is being set. So I'm creating an offscreen fbo with depth to draw my texture. Then draw it to the main framebuffer. I am at the point where I can see the texture from the…
ardowz
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1 answer
How can I open raw image files?
In my application , I am able to read framebuffer data but I cant open the image file ,I dont know why but what I came to know by searching is it is in the raw format .
Can someone tell me how can open this raw format of data on to a human…
sunil
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1 answer
Qt embedded PID of focused window
I use Qt Embedded, which directly draws to framebuffer. Is there a way to get pid of focused window? I tried to use QWSServer, but I didn't find all API for this. Thank You!
user2319183
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0
votes
1 answer
what is qt framebuffer work mechanism?
How does Qt embedded work with Linux framebuffer driver?
I think directly write to /dev/fb0 will cause image flickering. Use double buffer will solve flickering problem, but, what is the strategy of copying data from Qt buffer to framebuffer…
Leslie Li
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1 answer
opengl: rendering to texture goes wrong
I've written a program for testing rendering a texture with the framebuffer. In the function render_texture() I want to render a triangle on to a texture, but when I display the rendered texture in the display function, I get just a simple yellow…
user2798943
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0
votes
1 answer
Water reflection texture coordinates
What I want to achieve: Well, i have a terrain and skybox, and a simple water grid still without anything special.
I want to make reflections on the water by using framebuffers, rendered a flipped scene onto a texture and use this texture in the…
David Szalai
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0 answers
Why can't it capture the screenshot in Android?
I want to capture the screenshot in Android with native code.I read the framebuffer to get raw data, then convert to 24bmp to save as a file. But I just got a fuzzy image, its pixels look dislocated. Could anybody take a look at my code to give any…
Suge
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1 answer
Problem using FBO: Only first pass renders. A possible problem at setting render target back?
I have a huge problem with using FBO.
I have a multi-pass display using FBOs and multitexturing. Everything seems to work fine until the end of first execution of display.
I set the render target back to screen using…
isildoga
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1 answer
opengles: how to copy existing fbo's colorattachment(renderbuffer) to another fbo's colorattachment(texture2D)
Platform is iPhone OpenGL ES 2.0
the framework already create an main fbo with renderbuffer as it's colorattachment.
And I have my own fbo with texture2D as colorattachment.
I want to copy main fbo's content to my fbo.
I tried common…
xophiix
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linux stat64 what style is this?
hello friends I strace my android recovery n found this
open("/dev/tty0",
O_RDWR|O_DSYNC|O_LARGEFILE) = 3
ioctl(3, KDSETMODE, 0x1) = 0
stat64("/dev/late_display/control",
{st_mode=S_IFCHR|0660,
st_rdev=makedev(248, 0), ...})…
sandeep
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votes
1 answer
Save / recreate OpenGL Framebuffer / Renderbuffer texture during activity pause
I have an Android activity using a texture with dynamic content (drawn into via Framebuffer / Renderbuffer).
When the activity is paused / resumed, the texture (like all textures) is lost and must be recreated.
Is there a way to save the content…
TomMKV
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