palettes

Graphics and GPU Programming Programming OpenGL

Started by Jernej.L May 11, 2005 02:11 AM

4 comments, last by die113 18 years, 11 months ago

106

Author

May 11, 2005 02:11 AM

hi, i was looking at http://www.delphi3d.net/ opengl hardware registry and found out that practically no ati cards support palette extensions. i would need paletted textures and modify palette for those textures and this should work on most major card vendors.

Projects: Top Down City: http://mathpudding.com/

V-man

813

May 11, 2005 08:13 AM

Actually, most vendors don't support this. It's possible to use shaders for this if you're interested.

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

_the_phantom_

11,263

May 11, 2005 09:52 AM

Indeed, the lack of support is something which will continue as well, NV only supported it on the Riva128, TNT, TNT2 and GGFX (if memory serves) and dropped it again with the GF6x series, never to have it return.

die113

122

May 11, 2005 10:05 AM

I had that problem and got it working using shaders... check this post =]
The weird thing is that I just wrote it this morning and hadn´t seen your question yet õô

Jernej.L

106

Author

May 13, 2005 02:10 PM

alright, to be honest all i need to do is render several textures in different
hue/saturation/lightness, is that easier than palettizing?

Projects: Top Down City: http://mathpudding.com/

die113

122

May 17, 2005 02:09 PM

Hm that didn't work? You could try doing some crazy blendings... (check this stuff here) Hope that helps!
Tell me if you get anything =]

palettes

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