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-rw-r--r--src/gallium/drivers/softpipe/sp_prim_vbuf.c240
1 files changed, 182 insertions, 58 deletions
diff --git a/src/gallium/drivers/softpipe/sp_prim_vbuf.c b/src/gallium/drivers/softpipe/sp_prim_vbuf.c
index eef6e5806c..93eea69e99 100644
--- a/src/gallium/drivers/softpipe/sp_prim_vbuf.c
+++ b/src/gallium/drivers/softpipe/sp_prim_vbuf.c
@@ -239,57 +239,120 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
case PIPE_PRIM_TRIANGLES:
for (i = 2; i < nr; i += 3) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, indices[i-2], stride),
- get_vert(vertex_buffer, indices[i-1], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-2], stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
}
break;
case PIPE_PRIM_TRIANGLE_STRIP:
for (i = 2; i < nr; i += 1) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
- get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i+(i&1)-1], stride),
+ get_vert(vertex_buffer, indices[i-(i&1)], stride),
+ get_vert(vertex_buffer, indices[i-2], stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
+ get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
}
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),
- get_vert(vertex_buffer, indices[i-1], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
}
break;
+
case PIPE_PRIM_QUADS:
for (i = 3; i < nr; i += 4) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, indices[i-3], stride),
- get_vert(vertex_buffer, indices[i-2], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
-
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, indices[i-2], stride),
- get_vert(vertex_buffer, indices[i-1], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-3], stride) );
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-3], stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-3], stride),
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ 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,
- get_vert(vertex_buffer, indices[i-3], stride),
- get_vert(vertex_buffer, indices[i-2], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-3], stride));
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-0], stride),
+ get_vert(vertex_buffer, indices[i-3], stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-3], stride),
+ get_vert(vertex_buffer, indices[i-2], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-1], stride),
+ get_vert(vertex_buffer, indices[i-3], stride),
+ get_vert(vertex_buffer, indices[i-0], stride) );
+ }
+ }
+ break;
+ case PIPE_PRIM_POLYGON:
+ /* Almost same as tri fan but the _first_ vertex specifies the flat
+ * shading color. Note that the first polygon vertex is passed as
+ * the last triangle vertex here.
+ * flatshade_first state makes no difference.
+ */
+ for (i = 2; i < nr; i += 1) {
setup_tri( setup_ctx,
+ get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-1], stride),
- get_vert(vertex_buffer, indices[i-3], stride),
- get_vert(vertex_buffer, indices[i-0], stride));
+ get_vert(vertex_buffer, indices[0], stride) );
}
break;
+
default:
assert(0);
}
@@ -358,60 +421,121 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
}
break;
-
case PIPE_PRIM_TRIANGLES:
for (i = 2; i < nr; i += 3) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, i-2, stride),
- get_vert(vertex_buffer, i-1, stride),
- get_vert(vertex_buffer, i-0, stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-2, stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
}
break;
case PIPE_PRIM_TRIANGLE_STRIP:
- for (i = 2; i < nr; i += 1) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, i+(i&1)-2, stride),
- get_vert(vertex_buffer, i-(i&1)-1, stride),
- get_vert(vertex_buffer, i-0, stride));
+ for (i = 2; i < nr; i++) {
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i+(i&1)-1, stride),
+ get_vert(vertex_buffer, i-(i&1), stride),
+ get_vert(vertex_buffer, i-2, stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i+(i&1)-2, stride),
+ get_vert(vertex_buffer, i-(i&1)-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
}
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, 0, stride),
- get_vert(vertex_buffer, i-1, stride),
- get_vert(vertex_buffer, i-0, stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, 0, stride),
+ get_vert(vertex_buffer, i-1, stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, 0, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
}
break;
+
case PIPE_PRIM_QUADS:
for (i = 3; i < nr; i += 4) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, i-3, stride),
- get_vert(vertex_buffer, i-2, stride),
- get_vert(vertex_buffer, i-0, stride));
-
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, i-2, stride),
- get_vert(vertex_buffer, i-1, stride),
- get_vert(vertex_buffer, i-0, stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-3, stride),
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
}
break;
+
case PIPE_PRIM_QUAD_STRIP:
for (i = 3; i < nr; i += 2) {
- setup_tri( setup_ctx,
- get_vert(vertex_buffer, i-3, stride),
- get_vert(vertex_buffer, i-2, stride),
- get_vert(vertex_buffer, i-0, stride));
+ if (softpipe->rasterizer->flatshade_first) {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, i-3, stride) );
+ }
+ else {
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-3, stride),
+ get_vert(vertex_buffer, i-2, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ setup_tri( setup_ctx,
+ get_vert(vertex_buffer, i-1, stride),
+ get_vert(vertex_buffer, i-3, stride),
+ get_vert(vertex_buffer, i-0, stride) );
+ }
+ }
+ break;
+ case PIPE_PRIM_POLYGON:
+ /* Almost same as tri fan but the _first_ vertex specifies the flat
+ * shading color. Note that the first polygon vertex is passed as
+ * the last triangle vertex here.
+ * flatshade_first state makes no difference.
+ */
+ for (i = 2; i < nr; i += 1) {
setup_tri( setup_ctx,
get_vert(vertex_buffer, i-1, stride),
- get_vert(vertex_buffer, i-3, stride),
- get_vert(vertex_buffer, i-0, stride));
+ get_vert(vertex_buffer, i-0, stride),
+ get_vert(vertex_buffer, 0, stride) );
}
break;
+
default:
assert(0);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 03:56:42 +0000