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[PULL,05/16] sm501: Use values from the pitch register for 2D operations

Message ID 20180709074350.27086-6-david@gibson.dropbear.id.au
State New
Headers show
Series [PULL,01/16] ppc: fix default VGA display for Mac machines | expand

Commit Message

David Gibson July 9, 2018, 7:43 a.m. UTC 
From: Sebastian Bauer <mail@sebastianbauer.info>

Before, crt_h_total was used for src_width and dst_width. This is a
property of the current display setting and not relevant for the 2D
operation that also can be done off-screen. The pitch register's purpose
is to describe line pitch relevant of the 2D operation.

Signed-off-by: Sebastian Bauer <mail@sebastianbauer.info>
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/display/sm501.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index b095134d6f..d4878f01c0 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -709,8 +709,8 @@  static void sm501_2d_operation(SM501State *s)
     /* get frame buffer info */
     uint8_t *src = s->local_mem + (s->twoD_source_base & 0x03FFFFFF);
     uint8_t *dst = s->local_mem + (s->twoD_destination_base & 0x03FFFFFF);
-    int src_width = (s->dc_crt_h_total & 0x00000FFF) + 1;
-    int dst_width = (s->dc_crt_h_total & 0x00000FFF) + 1;
+    int src_width = s->twoD_pitch & 0x1FFF;
+    int dst_width = (s->twoD_pitch >> 16) & 0x1FFF;
 
     if (addressing != 0x0) {
         printf("%s: only XY addressing is supported.\n", __func__);