Optimized efficiency with a pointer cast

basilicon · Aug 5, 2024 · f05fe69 · f05fe69
1 parent 425906e
commit f05fe69
Showing 1 changed file with 35 additions and 4 deletions.
diff --git a/scene/resources/bit_map.cpp b/scene/resources/bit_map.cpp
@@ -719,7 +719,15 @@ Ref<BitMap> BitMap::bitwise_and(const Ref<BitMap> &p_other) const {
 	const uint8_t *d2 = p_other->bitmask.ptr();
 	uint8_t *w = new_bitmap->bitmask.ptrw();
 
-	for (int i = 0; i < ds; i++) {
+	const uint64_t *d_u64 = (uint64_t*) d;
+	const uint64_t *d2_u64 = (uint64_t*) d2;
+	uint64_t *w_u64 = (uint64_t*) w;
+
+	for (int i = 0; i < (ds >> 3); i++) {
+		w_u64[i] = d_u64[i] & d2_u64[i];
+	}
+
+	for (int i = ds & ~0b111; i < ds; i++) {
 		w[i] = d[i] & d2[i];
 	}
 
@@ -735,7 +743,14 @@ Ref<BitMap> BitMap::bitwise_not() const {
 	const uint8_t *d = bitmask.ptr();
 	uint8_t *w = new_bitmap->bitmask.ptrw();
 
-	for (int i = 0; i < ds; i++) {
+	const uint64_t *d_u64 = (uint64_t*) d;
+	uint64_t *w_u64 = (uint64_t*) w;
+
+	for (int i = 0; i < (ds >> 3); i++) {
+		w_u64[i] = ~d_u64[i];
+	}
+
+	for (int i = ds & ~0b111; i < ds; i++) {
 		w[i] = ~d[i];
 	}
 
@@ -763,7 +778,15 @@ Ref<BitMap> BitMap::bitwise_or(const Ref<BitMap> &p_other) const {
 	const uint8_t *d2 = p_other->bitmask.ptr();
 	uint8_t *w = new_bitmap->bitmask.ptrw();
 
-	for (int i = 0; i < ds; i++) {
+	const uint64_t *d_u64 = (uint64_t*) d;
+	const uint64_t *d2_u64 = (uint64_t*) d2;
+	uint64_t *w_u64 = (uint64_t*) w;
+
+	for (int i = 0; i < (ds >> 3); i++) {
+		w_u64[i] = d_u64[i] | d2_u64[i];
+	}
+
+	for (int i = ds & ~0b111; i < ds; i++) {
 		w[i] = d[i] | d2[i];
 	}
 
@@ -785,7 +808,15 @@ Ref<BitMap> BitMap::bitwise_xor(const Ref<BitMap> &p_other) const {
 	const uint8_t *d2 = p_other->bitmask.ptr();
 	uint8_t *w = new_bitmap->bitmask.ptrw();
 
-	for (int i = 0; i < ds; i++) {
+	const uint64_t *d_u64 = (uint64_t*) d;
+	const uint64_t *d2_u64 = (uint64_t*) d2;
+	uint64_t *w_u64 = (uint64_t*) w;
+
+	for (int i = 0; i < (ds >> 3); i++) {
+		w_u64[i] = d_u64[i] ^ d2_u64[i];
+	}
+
+	for (int i = ds & ~0b111; i < ds; i++) {
 		w[i] = d[i] ^ d2[i];
 	}