improving rasterization performances

src/soft/device/fragment.zig

@@ -13,11 +13,18 @@ const VkError = base.VkError;
 const SpvRuntimeError = spv.Runtime.RuntimeError;
 
 pub fn shaderInvocation(allocator: std.mem.Allocator, draw_call: *Renderer.DrawCall, batch_id: usize, position: zm.F32x4, inputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][]const u8) SpvRuntimeError!zm.F32x4 {
+    const io = draw_call.renderer.device.interface.io();
+
     _ = position;
     const pipeline = draw_call.renderer.state.pipeline orelse return zm.f32x4s(0.0);
 
     const shader = pipeline.stages.getPtrAssertContains(.fragment);
-    const rt = &shader.runtimes[batch_id];
+    const runtime = &shader.runtimes[batch_id];
+    const mutex = &runtime.mutex;
+    const rt = &runtime.rt;
+
+    mutex.lock(io) catch return SpvRuntimeError.Unknown;
+    defer mutex.unlock(io);
 
     const entry = try rt.getEntryPointByName(shader.entry);
     const output_result = try rt.getResultByLocation(0, .output);