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modesetting: get more values from the fallback cursor probe

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The space needed to store these extra values is at worst a few dozen bytes.
In exchange for these, larger cursors glyphs can use a more optimal cursor size.

Signed-off-by: stefan11111 <stefan11111@shitposting.expert>
This commit is contained in:
stefan11111
2025-11-29 16:25:51 +02:00
committed by Enrico Weigelt
parent d0b6510b64
commit 3f821b291e
1 changed files with 13 additions and 3 deletions
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16
hw/xfree86/drivers/video/modesetting/drmmode_display.c
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@@ -4794,7 +4794,7 @@ static void drmmode_probe_cursor_size(xf86CrtcPtr crtc)
* this doesn't happen, there shouldn't be any issues.
*/
int num_dimensions = 1;
int num_dimensions = !(max_width == max_height);
if (min_width > min_height) {
for(int j = min_height; j <= min_width; j *= 2) {
num_dimensions++;
@@ -4806,6 +4806,10 @@ static void drmmode_probe_cursor_size(xf86CrtcPtr crtc)
}
for (int j = MAX(min_width, min_height) * 2; j <= MIN(max_width, max_height); j *= 2) {
num_dimensions++;
}
void *tmp = realloc(drmmode_cursor->dimensions, num_dimensions * sizeof(drmmode_cursor_dim_rec));
if (!tmp) {
xf86DrvMsgVerb(crtc->scrn->scrnIndex, X_INFO, MS_LOGLEVEL_DEBUG,
@@ -4817,15 +4821,15 @@ static void drmmode_probe_cursor_size(xf86CrtcPtr crtc)
drmmode_cursor->dimensions = tmp;
drmmode_cursor->num_dimensions = num_dimensions;
int idx = 0;
if (min_width > min_height) {
int idx = 0;
for(int j = min_height; j <= min_width; j *= 2) {
drmmode_cursor->dimensions[idx].width = min_width;
drmmode_cursor->dimensions[idx].height = j;
idx++;
}
} else {
int idx = 0;
for(int j = min_width; j <= min_height; j *= 2) {
drmmode_cursor->dimensions[idx].width = j;
drmmode_cursor->dimensions[idx].height = min_height;
@@ -4833,6 +4837,12 @@ static void drmmode_probe_cursor_size(xf86CrtcPtr crtc)
}
}
for (int j = MAX(min_width, min_height) * 2; j <= MIN(max_width, max_height); j *= 2) {
drmmode_cursor->dimensions[idx].width = j;
drmmode_cursor->dimensions[idx].height = j;
idx++;
}
/* maximum size */
drmmode_cursor->dimensions[num_dimensions - 1].width = max_width;
drmmode_cursor->dimensions[num_dimensions - 1].height = max_height;