void gen_tex_coords(block_t *block, GLuint texture) {
// TODO: do less work when called from glDrawElements?
block->tex[texture] = (GLfloat *)malloc(block->len * 2 * sizeof(GLfloat));
texgen_state_t *texgen = &state.texgen[texture];
if (state.enable.texgen_s[texture]) {
if (texgen->S == texgen->T) {
tex_coord_loop(block, block->tex[texture], texgen->S, texgen->Sv, texgen->Tv);
} else {
tex_coord_loop(block, block->tex[texture], texgen->S, texgen->Sv, NULL);
}
}
if (state.enable.texgen_t[texture]) {
tex_coord_loop(block, block->tex[texture] + 1, texgen->T, texgen->Tv, NULL);
}
}
void gen_tex_coords(GLfloat *verts, GLfloat **coords, GLint count) {
// TODO: do less work when called from glDrawElements?
*coords = (GLfloat *)malloc(count * 2 * sizeof(GLfloat));
if (state.enable.texgen_s)
tex_coord_loop(verts, *coords, count, state.texgen.S, state.texgen.Sv);
if (state.enable.texgen_t)
tex_coord_loop(verts, *coords+1, count, state.texgen.T, state.texgen.Tv);
int i;
for (i = 0; i < count; i++) {
GLfloat *tex = &(*coords)[i];
if (state.enable.texgen_s)
tex[0] = gen_tex_coord(&verts[i], state.texgen.S, state.texgen.Sv);
if (state.enable.texgen_t)
tex[1] = gen_tex_coord(&verts[i], state.texgen.T, state.texgen.Tv);
}
}