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Mac classic: Avoid allocating second offscreen framebuffer when possible

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UnknownShadow200 2024-06-08 09:11:25 +10:00
parent 72ea74f27d
commit e2a4fc1205
3 changed files with 15 additions and 26 deletions
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1
.gitignore vendored
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@ -120,6 +120,7 @@ TestResult.xml
[Rr]eleasePS/
dlldata.c
# Mac classic
retro68scripts/
*_i.c

2
misc/macclassic/68APPL.r
View file

@ -18,6 +18,6 @@ resource 'SIZE' (-1) {
reserved,
reserved,
reserved,
3072 * 1024,
3584 * 1024,
8192 * 1024
};

38
src/Window_MacClassic.c
View file

@ -329,16 +329,15 @@ cc_result Window_SaveFileDialog(const struct SaveFileDialogArgs* args) {
static GWorldPtr fb_world;
static PixMapHandle fb_pixmap;
static int fb_stride;
static char* fb_bits;
void Window_AllocFramebuffer(struct Bitmap* bmp, int width, int height) {
bmp->scan0 = (BitmapCol*)Mem_Alloc(width * height, 4, "window pixels");
bmp->width = width;
bmp->height = height;
if (!useGWorld) return;
if (!useGWorld) {
bmp->scan0 = (BitmapCol*)Mem_Alloc(width * height, 4, "window pixels");
bmp->width = width;
bmp->height = height;
return;
}
// TODO bmp->scan0 should be the fb_world
QDErr err = NewGWorld(&fb_world, 32, &win->portRect, 0, 0, 0);
if (err != noErr) Logger_Abort2(err, "Failed to allocate GWorld");
@ -346,28 +345,17 @@ void Window_AllocFramebuffer(struct Bitmap* bmp, int width, int height) {
if (!fb_pixmap) Logger_Abort("Failed to allocate pixmap");
LockPixels(fb_pixmap);
fb_stride = (*fb_pixmap)->rowBytes & 0x3FFF;
fb_bits = (char*)GetPixBaseAddr(fb_pixmap);
int stride = (*fb_pixmap)->rowBytes & 0x3FFF;
bmp->scan0 = (BitmapCol*)GetPixBaseAddr(fb_pixmap);
bmp->width = stride >> 2;
bmp->height = height;
}
static void DrawFramebufferBulk(Rect2D r, struct Bitmap* bmp) {
GrafPtr thePort = (GrafPtr)win;
BitMap* memBits;
BitMap* winBits;
for (int y = r.y; y < r.y + r.height; y++)
{
BitmapCol* src = Bitmap_GetRow(bmp, y);
uint32_t* dst = (uint32_t*)(fb_bits + fb_stride * y);
for (int x = r.x; x < r.x + r.width; x++)
{
dst[x] = src[x];
}
}
memBits = &((GrafPtr)fb_world)->portBits;
winBits = &thePort->portBits;
BitMap* memBits = &((GrafPtr)fb_world)->portBits;
BitMap* winBits = &thePort->portBits;
Rect update;
update.left = r.x;