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renderer/metal: don't draw with zero instances

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This commit is contained in:
Mitchell Hashimoto
2024-04-21 19:42:48 -07:00
parent 8093088515
commit 7a6a2b0752
1 changed files with 5 additions and 1 deletions
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6
src/renderer/Metal.zig
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@ -816,7 +816,7 @@ pub fn drawFrame(self: *Metal, surface: *apprt.Surface) !void {
// Wait for a frame to be available.
const frame = self.gpu_state.nextFrame();
errdefer self.gpu_state.releaseFrame();
//log.debug("drawing frame index={}", .{self.gpu_state.frame_index});
// log.debug("drawing frame index={}", .{self.gpu_state.frame_index});
// Setup our frame data
try frame.uniforms.sync(self.gpu_state.device, &.{self.uniforms});
@ -1227,6 +1227,10 @@ fn drawCells(
buf: CellBuffer,
len: usize,
) !void {
// This triggers an assertion in the Metal API if we try to draw
// with an instance count of 0 so just bail.
if (len == 0) return;
// Use our shader pipeline
encoder.msgSend(
void,