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Panic before the OpenGL buffer surpasses 2 GiB

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fixes #1671
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IntegratedQuantum 2025-07-18 23:58:29 +02:00
parent 362f540825
commit c297fe0dfc
1 changed files with 1 additions and 1 deletions
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src/graphics.zig
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@ -1962,11 +1962,11 @@ pub fn LargeBuffer(comptime Entry: type) type { // MARK: LargerBuffer
return result;
} else {
std.log.info("Resizing internal mesh buffer from {} MiB to {} MiB", .{@as(usize, self.capacity)*@sizeOf(Entry) >> 20, (@as(usize, self.capacity)*@sizeOf(Entry) >> 20)*2});
if(@as(usize, self.capacity)*@sizeOf(Entry)*2 > 1 << 31) @panic("OpenGL 2 GiB buffer size limit reached. Please lower your render distance.");
const oldBuffer = self.ssbo;
defer oldBuffer.deinit();
const oldCapacity = self.capacity;
self.createBuffer(self.capacity*|2); // TODO: Is there a way to free the old buffer before creating the new one?
if(self.capacity == oldCapacity) @panic("Not enough addressable GPU memory available.");
self.used += self.capacity - oldCapacity;
self.finalFree(.{.start = oldCapacity, .len = self.capacity - oldCapacity});