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Fix a stupid bug in the gpu allocator. It maximized fragmentation instead of minimizing it.

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Fixes #175
This commit is contained in:
IntegratedQuantum 2023-11-26 18:22:46 +01:00
parent 410db62d85
commit e0ac22668b
2 changed files with 13 additions and 4 deletions
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2
src/graphics.zig
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@ -1276,7 +1276,7 @@ pub fn LargeBuffer(comptime Entry: type) type {
if(size == block.len) {
return self.freeBlocks.swapRemove(i);
}
if(size < block.len and if(smallestBlock) |_smallestBlock| block.len > _smallestBlock.len else true) {
if(size < block.len and if(smallestBlock) |_smallestBlock| block.len < _smallestBlock.len else true) {
smallestBlock = block;
}
}

15
src/gui/windows/debug.zig
View File

@ -42,9 +42,18 @@ fn flawedRender() !void {
y += 8;
try draw.print("Mesh Queue size: {}", .{main.renderer.RenderStructure.updatableList.items.len}, 0, y, 8, .left);
y += 8;
const faceDataSize = @sizeOf(main.chunk.meshing.FaceData);
try draw.print("ChunkMesh memory: {} MiB / {} MiB (fragmentation: {})", .{main.chunk.meshing.faceBuffer.used*faceDataSize >> 20, main.chunk.meshing.faceBuffer.capacity*faceDataSize >> 20, main.chunk.meshing.faceBuffer.freeBlocks.items.len}, 0, y, 8, .left);
y += 8;
{
const faceDataSize = @sizeOf(main.chunk.meshing.FaceData);
const size = main.chunk.meshing.faceBuffer.capacity*faceDataSize;
const used = main.chunk.meshing.faceBuffer.used*faceDataSize;
var largestFreeBlock: usize = 0;
for(main.chunk.meshing.faceBuffer.freeBlocks.items) |freeBlock| {
largestFreeBlock = @max(largestFreeBlock, freeBlock.len);
}
const fragmentation = size - used - largestFreeBlock*faceDataSize;
try draw.print("ChunkMesh memory: {} MiB / {} MiB (fragmentation: {} MiB)", .{used >> 20, size >> 20, fragmentation >> 20}, 0, y, 8, .left);
y += 8;
}
try draw.print("Biome: {s}", .{main.game.world.?.playerBiome.load(.Monotonic).id}, 0, y, 8, .left);
y += 8;
try draw.print("Opaque faces: {}, Transparent faces: {}", .{main.chunk.meshing.quadsDrawn, main.chunk.meshing.transparentQuadsDrawn}, 0, y, 8, .left);