By saying it only maps power of 3 textures do you mean thte texture
coordinates only range from [0, 1] in both directions? If that's the
case, the simple solution is to scale your texture matrix by the
dimensions of the rectangular texture.
//bind texture
glMatrixMode(GL_TEXTURE)
glScalef(texWidth, texHeight, 1);
//draw sphere
wes
On 5/28/07, Matthew Veenstra <email@hidden> wrote:
Hello,
I am trying to use a modern Mac OS X approach to texture map
frames of a QT
movie onto a gluSphere.
Here is what I do.
- I grab the frames with QTVisualContextCopyImageForTime
- I then create and setup the OpenGL texture
with CVOpenGLTextureCacheCreateTextureFromImage
- I can then happily map to GL_QUADS and such but I cannot then
map to a glu
quadratic (gluSphere)
It seems gluSphere only lets us map a power of 2
texture. CVOpenGLTextureCacheCreateTextureFromImage
returns a non power of 2 texture. Does anyone know another way to
get
texture data from QTVisualContextCopyImageForTime for
glTexture2D or such. Would I have to go back to a GWorld to try
and do this
and create a power of 2 texture?
Is there a way to use gluSphere with a non power of 2 texture. I
am not
sure I know my math well enough to create my own sphere and handle
my own
mapping.
Any other ideas?
Matt Veenstra
tribalmedia.com
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