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path: root/src/mesa/state_tracker/st_draw.c
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Diffstat (limited to 'src/mesa/state_tracker/st_draw.c')
-rw-r--r--src/mesa/state_tracker/st_draw.c7
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 fbf7713f58..d7d9a1d203 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);