diff options
| -rw-r--r-- | src/mesa/state_tracker/st_draw_feedback.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/src/mesa/state_tracker/st_draw_feedback.c b/src/mesa/state_tracker/st_draw_feedback.c index e533afd051e..32502a9cda4 100644 --- a/src/mesa/state_tracker/st_draw_feedback.c +++ b/src/mesa/state_tracker/st_draw_feedback.c @@ -196,13 +196,10 @@ st_feedback_draw_vbo(GLcontext *ctx, draw_set_vertex_elements(draw, vp->num_inputs, velements); if (ib) { - unsigned indexSize; struct gl_buffer_object *bufobj = ib->obj; - struct st_buffer_object *stobj = st_buffer_object(bufobj); + unsigned indexSize; void *map; - index_buffer_handle = stobj->buffer; - switch (ib->type) { case GL_UNSIGNED_INT: indexSize = 4; @@ -215,9 +212,19 @@ st_feedback_draw_vbo(GLcontext *ctx, return; } - map = pipe_buffer_map(pipe->screen, index_buffer_handle, - PIPE_BUFFER_USAGE_CPU_READ); - draw_set_mapped_element_buffer(draw, indexSize, map); + if (bufobj && bufobj->Name) { + struct st_buffer_object *stobj = st_buffer_object(bufobj); + + index_buffer_handle = stobj->buffer; + + map = pipe_buffer_map(pipe->screen, index_buffer_handle, + PIPE_BUFFER_USAGE_CPU_READ); + + draw_set_mapped_element_buffer(draw, indexSize, map); + } + else { + draw_set_mapped_element_buffer(draw, indexSize, (void *) ib->ptr); + } } else { /* no index/element buffer */ @@ -252,7 +259,7 @@ st_feedback_draw_vbo(GLcontext *ctx, draw_set_mapped_vertex_buffer(draw, i, NULL); } } - if (ib) { + if (index_buffer_handle) { pipe_buffer_unmap(pipe->screen, index_buffer_handle); draw_set_mapped_element_buffer(draw, 0, NULL); } |