There is a way to "emulate" GL_DEPTH_CLAMP_NV extension on Ati cards ?
There is a way to "emulate" GL_DEPTH_CLAMP_NV extension on Ati cards ?
I did a search and it looks like it has been answered:
http://www.opengl.org/discussion_boa...c;f=3;t=011367
But I think it is not sufficient to do what DEPTH_CLAMP_NV is doing.
What about the near plane?You can use an infinite projection matrix to eliminate far plane clipping. That is often sufficient for hardware/drivers that do not support NV_depth_clamp.
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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);
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