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mesa: use unsigned types when performing bitshifting

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Ensure unsigned integers are used instead of signed ones when performing
left bit shifts.

This has been detected by the Undefined Behaviour Sanitizer (UBSan).

Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29772>
This commit is contained in:
Juan A. Suarez Romero 2024-06-18 17:59:41 +02:00 • committed by Marge Bot
parent 017bd4bf25
commit 91593adc93
1 changed files with 1 additions and 1 deletions
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2
src/mesa/main/blend.c
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@ -1032,7 +1032,7 @@ _mesa_ColorMaski(GLuint buf, GLboolean red, GLboolean green,
FLUSH_VERTICES(ctx, 0, GL_COLOR_BUFFER_BIT);
ctx->NewDriverState |= ST_NEW_BLEND;
ctx->Color.ColorMask &= ~(0xf << (4 * buf));
ctx->Color.ColorMask &= ~(0xfu << (4 * buf));
ctx->Color.ColorMask |= mask << (4 * buf);
_mesa_update_allow_draw_out_of_order(ctx);
}