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pan/mdg: Fix perspective combination

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It's not enough to multiply by a .w reciprocal, we have to be taking the
reciprocal of the thing we're actually multiplying against.

Fixes incorrect rendering in Manhattan.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6525>
This commit is contained in:
Alyssa Rosenzweig 2020-08-31 14:20:59 -04:00 • committed by Marge Bot
parent c8ac01af33
commit 41d0a81c2a
1 changed files with 1 additions and 0 deletions
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src/panfrost/midgard/midgard_opt_perspective.c
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@ -88,6 +88,7 @@ midgard_opt_combine_projection(compiler_context *ctx, midgard_block *block)
}
if (!frcp_found) continue;
if (frcp_from != ins->src[0]) continue;
if (frcp_component != COMPONENT_W && frcp_component != COMPONENT_Z) continue;
if (!mir_single_use(ctx, frcp)) continue;