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gallium: plug in new sp_vbuf_draw_arrays() function

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Will be used for pass-through mode.
Also, call draw_set_render() to register the vbuf stage.  Should probably
rename that function to something like draw_set_vbuf_stage().
This commit is contained in:
Brian 2008-03-13 16:53:44 -06:00
parent 3e625ce18e
commit 7d5e38a55a
1 changed files with 57 additions and 0 deletions
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57
src/gallium/drivers/softpipe/sp_prim_vbuf.c
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@ -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);
}