【glTexGen】
Rather than having to explicitly provide a texture coordinate for each vertex, we can use texture coordinate generation (texgen) functions to have OpenGL automatically compute texture coordinates.
This uses the function glTexGen, and the glEnable modes GL_TEXTURE_GEN_S & GL_TEXTURE_GEN_T.
planeCoefficients = [ 1, 0, 0, 0 ] glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR) glTexGenfv(GL_S, GL_OBJECT_PLANE, planeCoefficients) glEnable(GL_TEXTURE_GEN_S) glBegin(GL_QUADS) glVertex3f(-3.25, -1, 0) glVertex3f(-1.25, -1, 0) glVertex3f(-1.25, 1, 0) glVertex3f(-3.25, 1, 0) glEnd()
参考:http://resumbrae.com/ub/dms424_s05/10/print.html
glTexGen
时间: 2024-10-13 01:07:11