if (rendering_mode == RM_SCANLINE) {
for (i = 0; i < 6; i++) {
p = &point;
ptmp = &tmp;
p->c = 255;
}
num_v = clip3d_f(POLYTYPE_PTEX_LIT, 0., 1000., 3,
(AL_CONST V3D_f**)p, p, ptmp, out);
for (i = 0; i < num_v; i++) {
persp_project_f(p->x, p->y, p->z,
&p->x, &p->y);
p->y = SCR_HEIGHT - p->y;
}
set_multiply_blender (r, g, b, 255);
scene_polygon3d_f(POLYTYPE_PTEX_LIT, pic[tex], num_v, p);
}
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Allegro Blender Function Ignored
October 12, 2004 04:25 AM
Hi. I'm working on a 3D engine using Allegro. I'm using the set_multiply_blender() function to shade my textured polygons, but I'm having some trouble.
When I run my program using Allegro's z-buffer, I have no problems. My shaded polygons (textured or otherwise) come out looking fine. However, if I use Allegro's scanline algorithm (eg. create_scene, clear_scene, scene_polygon3d, etc.), the parameters in the blender function appear to be ignored. What's going on? I've been at this for hours.
The business section is the two lines at the end. r, g, and b are what I want to multiply the colours on the polygon by. Anything you guys could tell me would be great.
Thanks in advance.
Edit: Figured out how to use the source tags
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