OpenGL textures
Post: #1
Does anyone know why a OpenGL ES texture of a size 32x32 with transparent areas shows up like a bunch of noise, while the same texture at 64x64 renders fine ?
Post: #2
Do you have a picture? How are you loading it?
Scott Lembcke - Howling Moon Software
Author of Chipmunk Physics - A fast and simple rigid body physics library in C.
Post: #3
I added this guy after creating the context, and it clears up the goop. 
CGContextClearRect(ctx, CGRectMake(0, 0, width, height));
CGContextClearRect(ctx, CGRectMake(0, 0, width, height));
Post: #4
Using calloc rather than malloc to allocate the backing for the CGBitmapContext would achieve the same thing, possibly faster...
Post: #5
Actually that was to be my guess. If you followed the Apple sample code, they don't tell you to clear the memory first. I had to find that out the hard way.
Scott Lembcke - Howling Moon Software
Author of Chipmunk Physics - A fast and simple rigid body physics library in C.
Possibly Related Threads...
| Thread: | Author | Replies: | Views: | Last Post | |
| OpenGL ES Textures Start White | demonpants | 5 | 5,993 |
Sep 3, 2009 06:40 AM Last Post: Skorche |
|
| opengl es font textures? | cool mr croc | 0 | 2,101 |
Aug 17, 2009 04:52 AM Last Post: cool mr croc |
|
| OpenGL ES Loading Textures | soulstorm | 5 | 5,314 |
May 25, 2009 07:21 AM Last Post: soulstorm |
|
| OpenGL textures upside down? | orbian | 1 | 5,603 |
Mar 13, 2009 02:53 PM Last Post: ThemsAllTook |
|
| blitting tiled textures using openGL | jaguard | 6 | 3,610 |
Jan 12, 2009 05:16 AM Last Post: jaguard |
|