From: BALATON Zoltan <bala...@eik.bme.hu>
Pixman may return false if it does not have a suitable implementation.
Add fallbacks to handle such cases.
Signed-off-by: BALATON Zoltan <bala...@eik.bme.hu>
Reported-by: Rene Engel <reneenge...@emailn.de>
Tested-by: Rene Engel <reneenge...@emailn.de>
Message-Id:
<20ed9442a0146238254ccc340c0d1efa226c6356.1677445307.git.bala...@eik.bme.hu>
---
hw/display/sm501.c | 75 ++++++++++++++++++++++++++++++++--------------
1 file changed, 52 insertions(+), 23 deletions(-)
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index 58bc9701ee..23c4418e19 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -691,7 +691,7 @@ static void sm501_2d_operation(SM501State *s)
unsigned int dst_pitch = (s->twoD_pitch >> 16) & 0x1FFF;
int crt = (s->dc_crt_control & SM501_DC_CRT_CONTROL_SEL) ? 1 : 0;
int fb_len = get_width(s, crt) * get_height(s, crt) * get_bpp(s, crt);
- bool overlap = false;
+ bool overlap = false, fallback = false;
if ((s->twoD_stretch >> 16) & 0xF) {
qemu_log_mask(LOG_UNIMP, "sm501: only XY addressing is supported.\n");
@@ -834,25 +834,48 @@ static void sm501_2d_operation(SM501State *s)
if (tmp_stride * sizeof(uint32_t) * height > sizeof(tmp_buf)) {
tmp = g_malloc(tmp_stride * sizeof(uint32_t) * height);
}
- pixman_blt((uint32_t *)&s->local_mem[src_base], tmp,
- src_pitch * bypp / sizeof(uint32_t),
- tmp_stride, 8 * bypp, 8 * bypp,
- src_x, src_y, 0, 0, width, height);
- pixman_blt(tmp, (uint32_t *)&s->local_mem[dst_base],
- tmp_stride,
- dst_pitch * bypp / sizeof(uint32_t),
- 8 * bypp, 8 * bypp,
- 0, 0, dst_x, dst_y, width, height);
+ fallback = !pixman_blt((uint32_t *)&s->local_mem[src_base],
+ tmp,
+ src_pitch * bypp / sizeof(uint32_t),
+ tmp_stride,
+ 8 * bypp, 8 * bypp,
+ src_x, src_y, 0, 0, width, height);
+ if (!fallback) {
+ fallback = !pixman_blt(tmp,
+ (uint32_t *)&s->local_mem[dst_base],
+ tmp_stride,
+ dst_pitch * bypp / sizeof(uint32_t),
+ 8 * bypp, 8 * bypp,
+ 0, 0, dst_x, dst_y, width, height);
+ }
if (tmp != tmp_buf) {
g_free(tmp);
}
} else {
- pixman_blt((uint32_t *)&s->local_mem[src_base],
- (uint32_t *)&s->local_mem[dst_base],
- src_pitch * bypp / sizeof(uint32_t),
- dst_pitch * bypp / sizeof(uint32_t),
- 8 * bypp, 8 * bypp,
- src_x, src_y, dst_x, dst_y, width, height);
+ fallback = !pixman_blt((uint32_t *)&s->local_mem[src_base],
+ (uint32_t *)&s->local_mem[dst_base],
+ src_pitch * bypp / sizeof(uint32_t),
+ dst_pitch * bypp / sizeof(uint32_t),
+ 8 * bypp, 8 * bypp, src_x, src_y,
+ dst_x, dst_y, width, height);
+ }
+ if (fallback) {
+ uint8_t *sp = s->local_mem + src_base;
+ uint8_t *d = s->local_mem + dst_base;
+ unsigned int y, i, j;
+ for (y = 0; y < height; y++) {
+ if (overlap) { /* overlap also means rtl */
+ i = (dst_y + height - 1 - y) * dst_pitch;
+ i = (dst_x + i) * bypp;
+ j = (src_y + height - 1 - y) * src_pitch;
+ j = (src_x + j) * bypp;
+ memmove(&d[i], &sp[j], width * bypp);
+ } else {
+ i = (dst_x + (dst_y + y) * dst_pitch) * bypp;
+ j = (src_x + (src_y + y) * src_pitch) * bypp;
+ memcpy(&d[i], &sp[j], width * bypp);
+ }
+ }
}
}
break;
@@ -867,13 +890,19 @@ static void sm501_2d_operation(SM501State *s)
color = cpu_to_le16(color);
}
- if (width == 1 && height == 1) {
- unsigned int i = (dst_x + dst_y * dst_pitch) * bypp;
- stn_he_p(&s->local_mem[dst_base + i], bypp, color);
- } else {
- pixman_fill((uint32_t *)&s->local_mem[dst_base],
- dst_pitch * bypp / sizeof(uint32_t),
- 8 * bypp, dst_x, dst_y, width, height, color);
+ if ((width == 1 && height == 1) ||
+ !pixman_fill((uint32_t *)&s->local_mem[dst_base],
+ dst_pitch * bypp / sizeof(uint32_t), 8 * bypp,
+ dst_x, dst_y, width, height, color)) {
+ /* fallback when pixman failed or we don't want to call it */
+ uint8_t *d = s->local_mem + dst_base;
+ unsigned int x, y, i;
+ for (y = 0; y < height; y++, i += dst_pitch * bypp) {
+ i = (dst_x + (dst_y + y) * dst_pitch) * bypp;
+ for (x = 0; x < width; x++, i += bypp) {
+ stn_he_p(&d[i], bypp, color);
+ }
+ }
}
break;
}
--
2.39.2
