diff options
| author | BALATON Zoltan <balaton@eik.bme.hu> | 2023-02-15 16:35:42 +0100 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-02-27 22:29:02 +0100 |
| commit | 8b0ce7f7c8c71883d2bbcb906469eb60497dfa07 (patch) | |
| tree | 63744f6f94031cba93694379e291a8d854368b77 /hw | |
| parent | 6a015046606ebf260950605ec48fc6420422f43c (diff) | |
hw/display/sm501: Implement more 2D raster operations
Add simple implementation for two raster operations that are used by
AmigaOS which fixes graphics problems in some programs using these.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reported-by: Rene Engel <ReneEngel80@emailn.de>
Tested-by: Rene Engel <ReneEngel80@emailn.de>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <17ef3c59dc7868f75034e9ebe21e2999c8f718d4.1677445307.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/display/sm501.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/hw/display/sm501.c b/hw/display/sm501.c index bb53499dff..c4c567d977 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -754,7 +754,7 @@ static void sm501_2d_operation(SM501State *s) } if ((rop_mode && rop == 0x5) || (!rop_mode && rop == 0x55)) { - /* Invert dest, is there a way to do this with pixman? */ + /* DSTINVERT, is there a way to do this with pixman? */ unsigned int x, y, i; uint8_t *d = s->local_mem + dst_base; @@ -764,6 +764,34 @@ static void sm501_2d_operation(SM501State *s) stn_he_p(&d[i], bypp, ~ldn_he_p(&d[i], bypp)); } } + } else if (!rop_mode && rop == 0x99) { + /* DSxn, is there a way to do this with pixman? */ + unsigned int x, y, i, j; + uint8_t *sp = s->local_mem + src_base; + uint8_t *d = s->local_mem + dst_base; + + for (y = 0; y < height; y++) { + i = (dst_x + (dst_y + y) * dst_pitch) * bypp; + j = (src_x + (src_y + y) * src_pitch) * bypp; + for (x = 0; x < width; x++, i += bypp, j += bypp) { + stn_he_p(&d[i], bypp, + ~(ldn_he_p(&sp[j], bypp) ^ ldn_he_p(&d[i], bypp))); + } + } + } else if (!rop_mode && rop == 0xee) { + /* SRCPAINT, is there a way to do this with pixman? */ + unsigned int x, y, i, j; + uint8_t *sp = s->local_mem + src_base; + uint8_t *d = s->local_mem + dst_base; + + for (y = 0; y < height; y++) { + i = (dst_x + (dst_y + y) * dst_pitch) * bypp; + j = (src_x + (src_y + y) * src_pitch) * bypp; + for (x = 0; x < width; x++, i += bypp, j += bypp) { + stn_he_p(&d[i], bypp, + ldn_he_p(&sp[j], bypp) | ldn_he_p(&d[i], bypp)); + } + } } else { /* Do copy src for unimplemented ops, better than unpainted area */ if ((rop_mode && (rop != 0xc || rop2_source_is_pattern)) || |