Mesa (master): nv30/draw: allocate vertex buffers in gart

[Ilia Mirkin]

Module: Mesa
Branch: master
Commit: c3d36a2e1a87a4aded662db7a5d320ee7ac3a8b5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c3d36a2e1a87a4aded662db7a5d320ee7ac3a8b5

Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Mon May 25 21:14:13 2015 -0400

nv30/draw: allocate vertex buffers in gart

These are only used once per draw, so it makes sense to keep them in
GART. Also take this opportunity to modernize the buffer mapping API
usage.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Ben Skeggs <bskeggs at redhat.com>
Cc: "10.5 10.6" <mesa-stable at lists.freedesktop.org>

---

 src/gallium/drivers/nouveau/nv30/nv30_draw.c |   16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nv30/nv30_draw.c b/src/gallium/drivers/nouveau/nv30/nv30_draw.c
index b0557b0..7ae1a1b 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_draw.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_draw.c
@@ -71,12 +71,12 @@ nv30_render_allocate_vertices(struct vbuf_render *render,
    struct nv30_render *r = nv30_render(render);
    struct nv30_context *nv30 = r->nv30;
 
-   r->length = vertex_size * nr_vertices;
+   r->length = (uint32_t)vertex_size * (uint32_t)nr_vertices;
 
    if (r->offset + r->length >= render->max_vertex_buffer_bytes) {
       pipe_resource_reference(&r->buffer, NULL);
       r->buffer = pipe_buffer_create(&nv30->screen->base.base,
-                                     PIPE_BIND_VERTEX_BUFFER, 0,
+                                     PIPE_BIND_VERTEX_BUFFER, PIPE_USAGE_STREAM,
                                      render->max_vertex_buffer_bytes);
       if (!r->buffer)
          return FALSE;
@@ -91,10 +91,14 @@ static void *
 nv30_render_map_vertices(struct vbuf_render *render)
 {
    struct nv30_render *r = nv30_render(render);
-   char *map = pipe_buffer_map(&r->nv30->base.pipe, r->buffer,
-                               PIPE_TRANSFER_WRITE |
-                               PIPE_TRANSFER_UNSYNCHRONIZED, &r->transfer);
-   return map + r->offset;
+   char *map = pipe_buffer_map_range(
+         &r->nv30->base.pipe, r->buffer,
+         r->offset, r->length,
+         PIPE_TRANSFER_WRITE |
+         PIPE_TRANSFER_DISCARD_RANGE,
+         &r->transfer);
+   assert(map);
+   return map;
 }
 
 static void