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mesa/st: clamp scissored clear regions to fb size

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these should never be larger than the fb and drivers shouldn't have to
care about it

Fixes: 1c8bcad81a ("gallium: add pipe cap for scissored clears and pass scissor state to clear() hook")

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9344>
This commit is contained in:
Mike Blumenkrantz
2021-03-01 14:52:25 -05:00
committed by Marge Bot
parent d7c38af3da
commit c5e72eb09d
1 changed files with 5 additions and 0 deletions
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5
src/mesa/state_tracker/st_cb_clear.c
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@@ -538,6 +538,11 @@ st_Clear(struct gl_context *ctx, GLbitfield mask)
scissor_state.miny = MAX2(miny, 0);
scissor_state.maxy = MAX2(maxy, 0);
}
if (have_scissor_buffers) {
const struct gl_framebuffer *fb = ctx->DrawBuffer;
scissor_state.maxx = MIN2(scissor_state.maxx, fb->Width);
scissor_state.maxy = MIN2(scissor_state.maxy, fb->Height);
}
/* We can't translate the clear color to the colorbuffer format,
* because different colorbuffers may have different formats.
*/