diff options
| -rw-r--r-- | src/mesa/state_tracker/st_draw.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c index fbf7713f58d..d7d9a1d203b 100644 --- a/src/mesa/state_tracker/st_draw.c +++ b/src/mesa/state_tracker/st_draw.c @@ -197,7 +197,7 @@ st_draw_vbo(GLcontext *ctx, /* indexed primitive */ struct gl_buffer_object *bufobj = ib->obj; struct pipe_buffer_handle *indexBuf = NULL; - unsigned indexSize, i; + unsigned indexSize, indexOffset, i; switch (ib->type) { case GL_UNSIGNED_INT: @@ -218,18 +218,21 @@ st_draw_vbo(GLcontext *ctx, /* elements/indexes are in a real VBO */ struct st_buffer_object *stobj = st_buffer_object(bufobj); winsys->buffer_reference(winsys, &indexBuf, stobj->buffer); + indexOffset = (unsigned) ib->ptr / indexSize; } else { /* element/indicies are in user space memory */ indexBuf = winsys->user_buffer_create(winsys, (void *) ib->ptr, ib->count * indexSize); + indexOffset = 0; } /* draw */ for (i = 0; i < nr_prims; i++) { pipe->draw_elements(pipe, indexBuf, indexSize, - prims[i].mode, prims[i].start, prims[i].count); + prims[i].mode, + prims[i].start + indexOffset, prims[i].count); } winsys->buffer_reference(winsys, &indexBuf, NULL); |