Macintosh-Tools/macemu
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double-buffer cursor mask

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this prevents clicks being wrongfully ignored during mask recalculation
This commit is contained in:
Jesús A. Álvarez 2019-11-04 23:48:09 +01:00
parent 0aaefd89f3
commit f81ca7897a
1 changed files with 7 additions and 1 deletions
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8
BasiliskII/src/SDL/video_rootless.cpp
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@ -78,9 +78,11 @@ int16 InstallRootlessProc() {
static struct {
uint8_t *pixels;
uint8_t *cursorMask;
int w,h;
} display_mask = {
.pixels = NULL,
.cursorMask = NULL,
.w = 0,
.h = 0
};
@ -268,7 +270,7 @@ bool cursor_point_opaque() {
}
int32 my = ReadMacInt16(0x0828);
int32 mx = ReadMacInt16(0x082a);
return display_mask.pixels[mx + my * display_mask.w];
return display_mask.cursorMask[mx + my * display_mask.w];
}
static SDL_Rect MaskCursor() {
@ -342,6 +344,7 @@ void update_display_mask(SDL_Window *window, int w, int h) {
// new mask
free(display_mask.pixels);
display_mask.pixels = (uint8_t*)calloc(1, w*h*2);
display_mask.cursorMask = &display_mask.pixels[display_mask.w * display_mask.h];
display_mask.w = w;
display_mask.h = h;
}
@ -393,6 +396,9 @@ void update_display_mask(SDL_Window *window, int w, int h) {
// Menu Bar
mask_rects.push_back(MaskMenuBar());
// Copy over cursor mask
memcpy(display_mask.cursorMask, display_mask.pixels, display_mask.w * display_mask.h);
// Cursor
if (cursor_point_opaque()) {
SDL_ShowCursor(SDL_DISABLE);