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Don't pointlessly allocate memory for chunks with no block lighting data

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Goodlyay 2024-05-11 20:39:40 -07:00
parent 5221a827c7
commit d759277961
1 changed files with 18 additions and 26 deletions
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44
src/ModernLighting.c
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@ -34,7 +34,6 @@ static cc_uint8* chunkLightingDataFlags;
#define CHUNK_SELF_CALCULATED 1
#define CHUNK_ALL_CALCULATED 2
static LightingChunk* chunkLightingData;
static cc_uint8 allDarkChunkLightingData[CHUNK_SIZE_3];
#define Modern_MakePaletteIndex(sun, block) ((sun << MODERN_LIGHTING_SUN_SHIFT) | block)
@ -279,6 +278,7 @@ static void CalculateChunkLightingAll(int chunkIndex, int cx, int cy, int cz) {
int x, y, z;
int chunkStartX, chunkStartY, chunkStartZ; //chunk coords
int chunkEndX, chunkEndY, chunkEndZ; //chunk coords
int curChunkIndex;
chunkStartX = cx - 1;
chunkStartY = cy - 1;
@ -294,34 +294,17 @@ static void CalculateChunkLightingAll(int chunkIndex, int cx, int cy, int cz) {
if (chunkEndY == World.ChunksY) { chunkEndY--; }
if (chunkEndZ == World.ChunksZ) { chunkEndZ--; }
cc_string msg; char msgBuffer[STRING_SIZE * 2];
//cc_uint64 BEG = Stopwatch_Measure();
for (y = chunkStartY; y <= chunkEndY; y++) {
for (z = chunkStartZ; z <= chunkEndZ; z++) {
for (x = chunkStartX; x <= chunkEndX; x++) {
int curChunkIndex = ChunkCoordsToIndex(x, y, z);
if (chunkLightingData[curChunkIndex] == NULL) {
chunkLightingData[curChunkIndex] = (cc_uint8*)Mem_TryAllocCleared(CHUNK_SIZE_3, sizeof(cc_uint8));
}
curChunkIndex = ChunkCoordsToIndex(x, y, z);
if (chunkLightingDataFlags[curChunkIndex] == CHUNK_UNCALCULATED) {
CalculateChunkLightingSelf(curChunkIndex, x, y, z);
}
//String_InitArray(msg, msgBuffer);
//Chat_Add(&msg);
}
}
}
//cc_uint64 END = Stopwatch_Measure();
//static float ELAPSED;
//ELAPSED += Stopwatch_ElapsedMicroseconds(BEG, END) / 1000.0;
//Platform_Log1("CALC TIME: %f3", &ELAPSED);
chunkLightingDataFlags[chunkIndex] = CHUNK_ALL_CALCULATED;
}
@ -338,23 +321,32 @@ static cc_bool ModernLighting_IsLit(int x, int y, int z) { return true; }
static cc_bool ModernLighting_IsLit_Fast(int x, int y, int z) { return true; }
static PackedCol ModernLighting_Color_Core(int x, int y, int z, PackedCol* palette, PackedCol outOfBoundsColor) {
cc_uint8 lightData;
int localIndex, cx, cy, cz, lx, ly, lz, chunkIndex;
if (!World_Contains(x, y, z)) return outOfBoundsColor;
int cx = x >> CHUNK_SHIFT, lx = x & CHUNK_MASK;
int cy = y >> CHUNK_SHIFT, ly = y & CHUNK_MASK;
int cz = z >> CHUNK_SHIFT, lz = z & CHUNK_MASK;
cx = x >> CHUNK_SHIFT, lx = x & CHUNK_MASK;
cy = y >> CHUNK_SHIFT, ly = y & CHUNK_MASK;
cz = z >> CHUNK_SHIFT, lz = z & CHUNK_MASK;
int chunkIndex = ChunkCoordsToIndex(cx, cy, cz);
chunkIndex = ChunkCoordsToIndex(cx, cy, cz);
if (chunkLightingDataFlags[chunkIndex] < CHUNK_ALL_CALCULATED) {
CalculateChunkLightingAll(chunkIndex, cx, cy, cz);
}
int localIndex = LocalCoordsToIndex(lx, ly, lz);
cc_uint8 lightData = chunkLightingData[chunkIndex][localIndex];
/* There might be no light data in this chunk even after it was calculated */
if (chunkLightingData[chunkIndex] == NULL) {
/* 0, no sun or light (but it may appear as sun based on the 2D sun map) */
lightData = 0;
} else {
localIndex = LocalCoordsToIndex(lx, ly, lz);
lightData = chunkLightingData[chunkIndex][localIndex];
}
/* This cell is exposed to sunlight */
if (y > ClassicLighting_GetLightHeight(x, z)) {
lightData |= MODERN_LIGHTING_SUN_MASK; /* Force the palette to have full sun color */
lightData |= MODERN_LIGHTING_SUN_MASK; /* Force the palette to use full sun color */
}
return palette[lightData];