diff options
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_prim_vbuf.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_prim_vbuf.c b/src/gallium/drivers/softpipe/sp_prim_vbuf.c index 69bea8a8f5..184aac16f4 100644 --- a/src/gallium/drivers/softpipe/sp_prim_vbuf.c +++ b/src/gallium/drivers/softpipe/sp_prim_vbuf.c @@ -183,6 +183,60 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr_indices) } +/** + * This function is hit when the draw module is working in pass-through mode. + * It's up to us to convert the vertex array into point/line/tri prims. + */ +static void +sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + struct softpipe_context *softpipe = cvbr->softpipe; + struct draw_stage *setup = softpipe->setup; + struct prim_header prim; + const void *vertex_buffer = cvbr->vertex_buffer; + const unsigned vertex_size = softpipe->vertex_info_vbuf.size * sizeof(float); + unsigned i, j; + + prim.det = 0; + prim.reset_line_stipple = 0; + prim.edgeflags = 0; + prim.pad = 0; + +#define VERTEX(I) \ + (struct vertex_header *) ((char *) vertex_buffer + (I) * vertex_size) + + switch (cvbr->prim) { + case PIPE_PRIM_TRIANGLES: + assert(nr % 3 == 0); + for (i = 0; i < nr; i += 3) { + prim.v[0] = VERTEX(i + 0); + prim.v[1] = VERTEX(i + 1); + prim.v[2] = VERTEX(i + 2); + calc_det(&prim); + setup->tri( setup, &prim ); + } + break; + case PIPE_PRIM_POLYGON: + /* draw as tri fan */ + for (i = 2; i < nr; i++) { + prim.v[0] = VERTEX(0); + prim.v[1] = VERTEX(i - 1); + prim.v[2] = VERTEX(i); + calc_det(&prim); + setup->tri( setup, &prim ); + } + break; + default: + /* XXX finish remaining prim types */ + assert(0); + } + +#undef VERTEX +} + + + static void sp_vbuf_destroy(struct vbuf_render *vbr) { @@ -210,6 +264,7 @@ sp_init_vbuf(struct softpipe_context *sp) sp->vbuf_render->base.allocate_vertices = sp_vbuf_allocate_vertices; sp->vbuf_render->base.set_primitive = sp_vbuf_set_primitive; sp->vbuf_render->base.draw = sp_vbuf_draw; + sp->vbuf_render->base.draw_arrays = sp_vbuf_draw_arrays; sp->vbuf_render->base.release_vertices = sp_vbuf_release_vertices; sp->vbuf_render->base.destroy = sp_vbuf_destroy; @@ -218,4 +273,6 @@ sp_init_vbuf(struct softpipe_context *sp) sp->vbuf = draw_vbuf_stage(sp->draw, &sp->vbuf_render->base); draw_set_rasterize_stage(sp->draw, sp->vbuf); + + draw_set_render(sp->draw, &sp->vbuf_render->base); } |