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swr: Account for index_bias in offsets

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When calculating buffer offsets for client buffers account for info.index_bias.

Fixes the follow piglit tests:
arb_draw_elements_base_vertex-drawelements-user_varrays
arb_draw_elements_base_vertex-negative-index-user_varrays

Reviewed-By: Bruce Cherniak <bruce.cherniak@intel.com>
This commit is contained in:
George Kyriazis
2017-12-14 12:01:53 -06:00
parent 6ab346c4d9
commit 999f1cd5c6
1 changed files with 3 additions and 3 deletions
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src/gallium/drivers/swr/swr_state.cpp
+3 -3
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@@ -1012,8 +1012,8 @@ swr_user_vbuf_range(const struct pipe_draw_info *info,
*size = elems * vb->stride;
} else if (vb->stride) {
elems = info->max_index - info->min_index + 1;
*totelems = info->max_index + 1;
*base = info->min_index * vb->stride;
*totelems = (info->max_index + info->index_bias) + 1;
*base = (info->min_index + info->index_bias) * vb->stride;
*size = elems * vb->stride;
} else {
*totelems = 1;
@@ -1304,7 +1304,7 @@ swr_update_derived(struct pipe_context *pipe,
uint32_t base;
swr_user_vbuf_range(&info, ctx->velems, vb, i, &elems, &base, &size);
partial_inbounds = 0;
min_vertex_index = info.min_index;
min_vertex_index = info.min_index + info.index_bias;
size = AlignUp(size, 4);
/* If size of client memory copy is too large, don't copy. The