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softpipe: separate case for PIPE_PRIM_POLYGON in sp_vbuf_draw()

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Because of flat shading, we can't use same code as PIPE_PRIM_TRIANGLE_FAN.
This is a follow-on to commit a59575d8fb.
This commit is contained in:
Brian Paul
2009-06-03 18:33:07 -06:00
parent a64bbdaa3e
commit 086ecea179
1 changed files with 12 additions and 2 deletions
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src/gallium/drivers/softpipe/sp_prim_vbuf.c
+12 -2
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@@ -236,7 +236,6 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
}
break;
case PIPE_PRIM_TRIANGLES:
for (i = 2; i < nr; i += 3) {
setup_tri( setup_ctx,
@@ -256,7 +255,6 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
break;
case PIPE_PRIM_TRIANGLE_FAN:
case PIPE_PRIM_POLYGON:
for (i = 2; i < nr; i += 1) {
setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[0], stride),
@@ -264,6 +262,7 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
get_vert(vertex_buffer, indices[i-0], stride));
}
break;
case PIPE_PRIM_QUADS:
for (i = 3; i < nr; i += 4) {
setup_tri( setup_ctx,
@@ -277,6 +276,7 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
get_vert(vertex_buffer, indices[i-0], stride));
}
break;
case PIPE_PRIM_QUAD_STRIP:
for (i = 3; i < nr; i += 2) {
setup_tri( setup_ctx,
@@ -290,6 +290,16 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
get_vert(vertex_buffer, indices[i-0], stride));
}
break;
case PIPE_PRIM_POLYGON:
for (i = 2; i < nr; i += 1) {
setup_tri( setup_ctx,
get_vert(vertex_buffer, indices[0-1], stride),
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[0], stride));
}
break;
default:
assert(0);
}