**************************************************************************/
/**
- * Post-transform vertex buffering. This is an optional part of the
- * softpipe rendering pipeline.
- * Probably not desired in general, but useful for testing/debuggin.
- * Enabled/Disabled with SP_VBUF env var.
+ * Interface between 'draw' module's output and the softpipe rasterizer/setup
+ * code. When the 'draw' module has finished filling a vertex buffer, the
+ * draw_arrays() functions below will be called. Loop over the vertices and
+ * call the point/line/tri setup functions.
*
* Authors
* Brian Paul
#include "sp_context.h"
+#include "sp_setup.h"
#include "sp_state.h"
#include "sp_prim_vbuf.h"
-#include "sp_prim_setup.h"
-#include "sp_setup.h"
#include "draw/draw_context.h"
#include "draw/draw_vbuf.h"
#include "util/u_memory.h"
+#include "util/u_prim.h"
#define SP_MAX_VBUF_INDEXES 1024
{
struct vbuf_render base;
struct softpipe_context *softpipe;
+ struct setup_context *setup;
+
uint prim;
uint vertex_size;
+ uint nr_vertices;
+ uint vertex_buffer_size;
void *vertex_buffer;
};
}
+
+
+
+
+
static const struct vertex_info *
sp_vbuf_get_vertex_info(struct vbuf_render *vbr)
{
}
-static void *
+static boolean
sp_vbuf_allocate_vertices(struct vbuf_render *vbr,
- ushort vertex_size, ushort nr_vertices)
+ ushort vertex_size, ushort nr_vertices)
{
struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
- assert(!cvbr->vertex_buffer);
- cvbr->vertex_buffer = align_malloc(vertex_size * nr_vertices, 16);
+ unsigned size = vertex_size * nr_vertices;
+
+ if (cvbr->vertex_buffer_size < size) {
+ align_free(cvbr->vertex_buffer);
+ cvbr->vertex_buffer = align_malloc(size, 16);
+ cvbr->vertex_buffer_size = size;
+ }
+
cvbr->vertex_size = vertex_size;
- return cvbr->vertex_buffer;
+ cvbr->nr_vertices = nr_vertices;
+
+ return cvbr->vertex_buffer != NULL;
}
-
static void
-sp_vbuf_release_vertices(struct vbuf_render *vbr, void *vertices,
- unsigned vertex_size, unsigned vertices_used)
+sp_vbuf_release_vertices(struct vbuf_render *vbr)
+{
+ /* keep the old allocation for next time */
+}
+
+static void *
+sp_vbuf_map_vertices(struct vbuf_render *vbr)
{
struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
- align_free(vertices);
- assert(vertices == cvbr->vertex_buffer);
- cvbr->vertex_buffer = NULL;
+ return cvbr->vertex_buffer;
+}
+
+static void
+sp_vbuf_unmap_vertices(struct vbuf_render *vbr,
+ ushort min_index,
+ ushort max_index )
+{
+ struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
+ assert( cvbr->vertex_buffer_size >= (max_index+1) * cvbr->vertex_size );
+ (void) cvbr;
+ /* do nothing */
}
sp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
{
struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
-
- /* XXX: break this dependency - make setup_context live under
- * softpipe, rename the old "setup" draw stage to something else.
- */
- struct setup_context *setup_ctx = sp_draw_setup_context(cvbr->softpipe->setup);
+ struct setup_context *setup_ctx = cvbr->setup;
- setup_prepare( setup_ctx );
-
-
+ sp_setup_prepare( setup_ctx );
+ cvbr->softpipe->reduced_prim = u_reduced_prim(prim);
cvbr->prim = prim;
return TRUE;
}
+/**
+ * draw elements / indexed primitives
+ */
static void
sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
{
struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
struct softpipe_context *softpipe = cvbr->softpipe;
- unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float);
- unsigned i;
+ const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float);
const void *vertex_buffer = cvbr->vertex_buffer;
-
- /* XXX: break this dependency - make setup_context live under
- * softpipe, rename the old "setup" draw stage to something else.
- */
- struct draw_stage *setup = softpipe->setup;
- struct setup_context *setup_ctx = sp_draw_setup_context(softpipe->setup);
-
+ struct setup_context *setup_ctx = cvbr->setup;
+ unsigned i;
switch (cvbr->prim) {
case PIPE_PRIM_POINTS:
for (i = 0; i < nr; i++) {
- setup_point( setup_ctx,
+ sp_setup_point( setup_ctx,
get_vert(vertex_buffer, indices[i-0], stride) );
}
break;
case PIPE_PRIM_LINES:
for (i = 1; i < nr; i += 2) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
case PIPE_PRIM_LINE_STRIP:
for (i = 1; i < nr; i ++) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
case PIPE_PRIM_LINE_LOOP:
for (i = 1; i < nr; i ++) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
if (nr) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, indices[nr-1], stride),
get_vert(vertex_buffer, indices[0], stride) );
}
break;
-
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) {
+ for (i = 2; i < nr; i += 3) {
+ sp_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 {
+ for (i = 2; i < nr; i += 3) {
+ sp_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) {
+ for (i = 2; i < nr; i += 1) {
+ sp_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 {
+ for (i = 2; i < nr; i += 1) {
+ sp_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) {
+ for (i = 2; i < nr; i += 1) {
+ sp_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 {
+ for (i = 2; i < nr; i += 1) {
+ sp_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) {
+ for (i = 3; i < nr; i += 4) {
+ sp_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) );
+ sp_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 {
+ for (i = 3; i < nr; i += 4) {
+ sp_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) );
+
+ sp_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) {
+ for (i = 3; i < nr; i += 2) {
+ sp_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));
+ sp_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 {
+ for (i = 3; i < nr; i += 2) {
+ sp_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) );
+ sp_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;
- setup_tri( setup_ctx,
+ 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) {
+ sp_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);
}
-
- /* XXX: why are we calling this??? If we had to call something, it
- * would be a function in sp_setup.c:
- */
- sp_draw_flush( setup );
}
{
struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
struct softpipe_context *softpipe = cvbr->softpipe;
- struct draw_stage *setup = softpipe->setup;
- const void *vertex_buffer = NULL;
+ struct setup_context *setup_ctx = cvbr->setup;
const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float);
+ const void *vertex_buffer =
+ (void *) get_vert(cvbr->vertex_buffer, start, stride);
unsigned i;
- struct setup_context *setup_ctx = sp_draw_setup_context(setup);
-
- vertex_buffer = (void *)get_vert(cvbr->vertex_buffer, start, stride);
switch (cvbr->prim) {
case PIPE_PRIM_POINTS:
for (i = 0; i < nr; i++) {
- setup_point( setup_ctx,
+ sp_setup_point( setup_ctx,
get_vert(vertex_buffer, i-0, stride) );
}
break;
case PIPE_PRIM_LINES:
for (i = 1; i < nr; i += 2) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
case PIPE_PRIM_LINE_STRIP:
for (i = 1; i < nr; i ++) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
case PIPE_PRIM_LINE_LOOP:
for (i = 1; i < nr; i ++) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
if (nr) {
- setup_line( setup_ctx,
+ sp_setup_line( setup_ctx,
get_vert(vertex_buffer, nr-1, stride),
get_vert(vertex_buffer, 0, stride) );
}
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) {
+ for (i = 2; i < nr; i += 3) {
+ sp_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 {
+ for (i = 2; i < nr; i += 3) {
+ sp_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));
+ if (softpipe->rasterizer->flatshade_first) {
+ for (i = 2; i < nr; i++) {
+ sp_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 {
+ for (i = 2; i < nr; i++) {
+ sp_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) {
+ for (i = 2; i < nr; i += 1) {
+ sp_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 {
+ for (i = 2; i < nr; i += 1) {
+ sp_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) {
+ for (i = 3; i < nr; i += 4) {
+ sp_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) );
+ sp_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 {
+ for (i = 3; i < nr; i += 4) {
+ sp_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) );
+ sp_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) {
+ for (i = 3; i < nr; i += 2) {
+ sp_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) );
+ sp_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 {
+ for (i = 3; i < nr; i += 2) {
+ sp_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) );
+ sp_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;
- setup_tri( setup_ctx,
+ 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) {
+ sp_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);
}
sp_vbuf_destroy(struct vbuf_render *vbr)
{
struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
- cvbr->softpipe->vbuf_render = NULL;
+ sp_setup_destroy_context(cvbr->setup);
FREE(cvbr);
}
/**
- * Initialize the post-transform vertex buffer information for the given
- * context.
+ * Create the post-transform vertex handler for the given context.
*/
-void
-sp_init_vbuf(struct softpipe_context *sp)
+struct vbuf_render *
+sp_create_vbuf_backend(struct softpipe_context *sp)
{
- assert(sp->draw);
+ struct softpipe_vbuf_render *cvbr = CALLOC_STRUCT(softpipe_vbuf_render);
- sp->vbuf_render = CALLOC_STRUCT(softpipe_vbuf_render);
+ assert(sp->draw);
- sp->vbuf_render->base.max_indices = SP_MAX_VBUF_INDEXES;
- sp->vbuf_render->base.max_vertex_buffer_bytes = SP_MAX_VBUF_SIZE;
- sp->vbuf_render->base.get_vertex_info = sp_vbuf_get_vertex_info;
- 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;
+ cvbr->base.max_indices = SP_MAX_VBUF_INDEXES;
+ cvbr->base.max_vertex_buffer_bytes = SP_MAX_VBUF_SIZE;
- sp->vbuf_render->softpipe = sp;
+ cvbr->base.get_vertex_info = sp_vbuf_get_vertex_info;
+ cvbr->base.allocate_vertices = sp_vbuf_allocate_vertices;
+ cvbr->base.map_vertices = sp_vbuf_map_vertices;
+ cvbr->base.unmap_vertices = sp_vbuf_unmap_vertices;
+ cvbr->base.set_primitive = sp_vbuf_set_primitive;
+ cvbr->base.draw = sp_vbuf_draw;
+ cvbr->base.draw_arrays = sp_vbuf_draw_arrays;
+ cvbr->base.release_vertices = sp_vbuf_release_vertices;
+ cvbr->base.destroy = sp_vbuf_destroy;
- sp->vbuf = draw_vbuf_stage(sp->draw, &sp->vbuf_render->base);
+ cvbr->softpipe = sp;
- draw_set_rasterize_stage(sp->draw, sp->vbuf);
+ cvbr->setup = sp_setup_create_context(cvbr->softpipe);
- draw_set_render(sp->draw, &sp->vbuf_render->base);
+ return &cvbr->base;
}