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authorSebastian Bauer <mail@sebastianbauer.info>2018-07-04 11:40:58 +0200
committerDavid Gibson <david@gibson.dropbear.id.au>2018-07-07 12:12:27 +1000
commitd27335592a187de0ba77894b522025827907038c (patch)
tree5c7255213677dd41542a8e070652ef6ae333400b
parent4a1f253adb45ac6019971193d5077c4d5d55886a (diff)
downloadqemu-arm-d27335592a187de0ba77894b522025827907038c.tar.gz
sm501: Perform a full update after palette change
Changing the palette of a color index has as an immediate effect on all pixels with the corresponding index on real hardware. Performing a full update after a palette change is a simple way to emulate this effect. 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>
-rw-r--r--hw/display/sm501.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index 05c964bea1..b095134d6f 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -487,6 +487,7 @@ typedef struct SM501State {
MemoryRegion twoD_engine_region;
uint32_t last_width;
uint32_t last_height;
+ bool do_full_update; /* perform a full update next time */
I2CBus *i2c_bus;
/* mmio registers */
@@ -1042,6 +1043,7 @@ static void sm501_palette_write(void *opaque, hwaddr addr,
assert(range_covers_byte(0, 0x400 * 3, addr));
*(uint32_t *)&s->dc_palette[addr] = value;
+ s->do_full_update = true;
}
static uint64_t sm501_disp_ctrl_read(void *opaque, hwaddr addr,
@@ -1630,6 +1632,12 @@ static void sm501_update_display(void *opaque)
full_update = 1;
}
+ /* someone else requested a full update */
+ if (s->do_full_update) {
+ s->do_full_update = false;
+ full_update = 1;
+ }
+
/* draw each line according to conditions */
snap = memory_region_snapshot_and_clear_dirty(&s->local_mem_region,
offset, width * height * src_bpp, DIRTY_MEMORY_VGA);