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clamp masking to screen size

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This commit is contained in:
Jesús A. Álvarez 2019-11-05 21:49:41 +01:00
parent f995962795
commit f32c6b66e0
1 changed files with 8 additions and 1 deletions
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9
BasiliskII/src/SDL/video_rootless.cpp
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@ -94,6 +94,8 @@ void MaskRect(int16 top, int16 left, int16 bottom, int16 right, bool in) {
if (top == bottom || left == right) return;
if (top < 0) top = 0;
if (left < 0) left = 0;
if (bottom > display_mask.h) bottom = display_mask.h;
if (right > display_mask.w) right = display_mask.w;
uint8_t *line = display_mask.pixels + display_mask.w * top + left;
for (int y = top; y < bottom; y++) {
@ -122,7 +124,9 @@ void MaskRegion(uint32 regionPtr, bool in) {
int16 left = ReadMacInt16(regionPtr + 4);
int16 bottom = ReadMacInt16(regionPtr + 6);
int16 right = ReadMacInt16(regionPtr + 8);
if (bottom > display_mask.h) bottom = display_mask.h;
if (right > display_mask.w) right = display_mask.w;
if (size == 10) {
MaskRect(top, left, bottom, right, in);
return;
@ -144,6 +148,9 @@ void MaskRegion(uint32 regionPtr, bool in) {
if (begin == 0x7fff) break;
uint16 end = ReadMacInt16(ptr);
ptr += 2;
if (end > display_mask.w) {
end = display_mask.w;
}
for (int i=begin; i < end; i++) {
curLine[i] ^= 0xff;
}