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| author | Zack Rusin <zackr@vmware.com> | 2013-06-27 20:40:10 -0400 |
|---|---|---|
| committer | Zack Rusin <zackr@vmware.com> | 2013-06-28 05:21:20 -0400 |
| commit | 1c2e5c223da28cdffe156b6b430fcdf638909021 (patch) | |
| tree | f86833cf8b5b43134231309cc75932da000de080 /src/gallium/auxiliary/draw/draw_pt_fetch.c | |
| parent | df4ab7974a825bf686f9dfa3474f3648e9a3ca66 (diff) | |
| download | external_mesa3d-1c2e5c223da28cdffe156b6b430fcdf638909021.zip external_mesa3d-1c2e5c223da28cdffe156b6b430fcdf638909021.tar.gz external_mesa3d-1c2e5c223da28cdffe156b6b430fcdf638909021.tar.bz2 | |
draw/translate: fix instancing
We were incorrectly computing the buffer offset when using the
instances. The buffer offset is always equal to:
start_instance * stride + (instance_num / instance_divisor) *
stride
We were completely ignoring the start instance quite
often producing instances that completely wrong, e.g. if
start instance = 5, instance divisor = 2, then on the first
iteration it should be:
5 * stride, not (5/2) * stride as we'd have currently, and if
start instance = 1, instance divisor = 3, then on the first
iteration it should be:
1 * stride, not 0 as we'd have.
This fixes it and adjusts all the code to the changes.
Signed-off-by: Zack Rusin <zackr@vmware.com>
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_fetch.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_fetch.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch.c b/src/gallium/auxiliary/draw/draw_pt_fetch.c index 3740dea..8716f65 100644 --- a/src/gallium/auxiliary/draw/draw_pt_fetch.c +++ b/src/gallium/auxiliary/draw/draw_pt_fetch.c @@ -168,6 +168,7 @@ draw_pt_fetch_run(struct pt_fetch *fetch, translate->run_elts( translate, elts, count, + draw->start_instance, draw->instance_id, verts ); } @@ -195,6 +196,7 @@ draw_pt_fetch_run_linear(struct pt_fetch *fetch, translate->run( translate, start, count, + draw->start_instance, draw->instance_id, verts ); } |