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[PULL 03/13] sm501: Ignore no-op blits
From: |
Gerd Hoffmann |
Subject: |
[PULL 03/13] sm501: Ignore no-op blits |
Date: |
Wed, 1 Jul 2020 17:04:15 +0200 |
From: BALATON Zoltan <balaton@eik.bme.hu>
Some guests seem to try source copy blits with same source and dest
which are no-op so avoid calling pixman for these.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id:
a2a8214dd37344dfb65f1c343ace4cff2e94f3bb.1592686588.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/display/sm501.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index 5d2e0195753a..ad5a62bfab1b 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -788,6 +788,11 @@ static void sm501_2d_operation(SM501State *s)
(rop2_source_is_pattern ?
" with pattern source" : ""));
}
+ /* Ignore no-op blits, some guests seem to do this */
+ if (src_base == dst_base && src_pitch == dst_pitch &&
+ src_x == dst_x && src_y == dst_y) {
+ break;
+ }
/* Check for overlaps, this could be made more exact */
uint32_t sb, se, db, de;
sb = src_base + src_x + src_y * (width + src_pitch);
--
2.18.4
- [PULL 00/13] Vga 20200701 patches, Gerd Hoffmann, 2020/07/01
- [PULL 01/13] sm501: Fix bounds checks, Gerd Hoffmann, 2020/07/01
- [PULL 13/13] configure: vgabios cleanups, Gerd Hoffmann, 2020/07/01
- [PULL 03/13] sm501: Ignore no-op blits,
Gerd Hoffmann <=
- [PULL 06/13] sm501: Use stn_he_p/ldn_he_p instead of switch/case, Gerd Hoffmann, 2020/07/01
- [PULL 09/13] sm501: Fix and optimize overlap check, Gerd Hoffmann, 2020/07/01
- [PULL 10/13] ati-vga: Support unaligned access to hardware cursor registers, Gerd Hoffmann, 2020/07/01
- [PULL 04/13] sm501: Introduce variable for commonly used value for better readability, Gerd Hoffmann, 2020/07/01
- [PULL 08/13] sm501: Convert debug printfs to traces, Gerd Hoffmann, 2020/07/01
- [PULL 02/13] sm501: Drop unneded variable, Gerd Hoffmann, 2020/07/01
- [PULL 12/13] ati-vga: Add dummy MEM_SDRAM_MODE_REG, Gerd Hoffmann, 2020/07/01
- [PULL 11/13] ati-vga: Do not assert on error, Gerd Hoffmann, 2020/07/01
- [PULL 07/13] sm501: Do not allow guest to set invalid format, Gerd Hoffmann, 2020/07/01
- [PULL 05/13] sm501: Optimise 1 pixel 2d ops, Gerd Hoffmann, 2020/07/01