fences

Examples/WebGPU/main.c

@@ -49,6 +49,8 @@ int main(void)
 	PulseComputePipeline pipeline = PulseCreateComputePipeline(device, &info);
 	CHECK_PULSE_HANDLE_RETVAL(pipeline, 1);
 
+	PulseFence fence = PulseCreateFence(device);
+	CHECK_PULSE_HANDLE_RETVAL(fence, 1);
 	PulseCommandList cmd = PulseRequestCommandList(device, PULSE_COMMAND_LIST_GENERAL);
 	CHECK_PULSE_HANDLE_RETVAL(cmd, 1);
 
@@ -58,8 +60,13 @@ int main(void)
 		PulseDispatchComputations(pass, 32, 32, 1);
 	PulseEndComputePass(pass);
 
-	PulseReleaseCommandList(device, cmd);
+	if(!PulseSubmitCommandList(device, cmd, fence))
+		fprintf(stderr, "Could not submit command list, %s\n", PulseVerbaliseErrorType(PulseGetLastErrorType()));
+	if(!PulseWaitForFences(device, &fence, 1, true))
+		fprintf(stderr, "Could not wait for fences, %s\n", PulseVerbaliseErrorType(PulseGetLastErrorType()));
 
+	PulseReleaseCommandList(device, cmd);
+	PulseDestroyFence(device, fence);
 	PulseDestroyComputePipeline(device, pipeline);
 
 	PulseDestroyDevice(device);

Examples/xmake.lua

@@ -2,5 +2,8 @@ option("examples", { description = "Build the examples", default = false })
 
 if has_config("examples") then
 	set_group("Examples")
-	includes("*/xmake.lua")
+	if not is_plat("wasm") then
+		includes("Vulkan/xmake.lua")
+	end
+	includes("WebGPU/xmake.lua")
 end

Sources/Backends/WebGPU/WebGPUCommandList.c

@@ -2,9 +2,12 @@
 // This file is part of "Pulse"
 // For conditions of distribution and use, see copyright notice in LICENSE
 
+#include <stdatomic.h>
+
 #include <Pulse.h>
 #include "WebGPU.h"
 #include "WebGPUDevice.h"
+#include "WebGPUFence.h"
 #include "WebGPUCommandList.h"
 #include "WebGPUComputePass.h"
 #include "../../PulseInternal.h"
@@ -38,6 +41,17 @@ PulseCommandList WebGPURequestCommandList(PulseDevice device, PulseCommandListUs
 	return cmd;
 }
 
+#include <stdio.h>
+
+static void WebGPUFenceCallback(WGPUQueueWorkDoneStatus status, void* userdata1, void* userdata2)
+{
+	PULSE_UNUSED(userdata2);
+	WebGPUFence* webgpu_fence = (WebGPUFence*)userdata1;
+	if(status == WGPUQueueWorkDoneStatus_Success)
+		atomic_store(&webgpu_fence->signal, true);
+	puts("test");
+}
+
 bool WebGPUSubmitCommandList(PulseDevice device, PulseCommandList cmd, PulseFence fence)
 {
 	WebGPUDevice* webgpu_device = WEBGPU_RETRIEVE_DRIVER_DATA_AS(device, WebGPUDevice*);
@@ -48,6 +62,15 @@ bool WebGPUSubmitCommandList(PulseDevice device, PulseCommandList cmd, PulseFenc
 
 	wgpuQueueSubmit(webgpu_device->queue, 1, &command_buffer);
 
+	WebGPUFence* webgpu_fence = WEBGPU_RETRIEVE_DRIVER_DATA_AS(fence, WebGPUFence*);
+	atomic_store(&webgpu_fence->signal, false);
+
+	WGPUQueueWorkDoneCallbackInfo callback = { 0 };
+	callback.mode = WGPUCallbackMode_AllowSpontaneous;
+	callback.callback = WebGPUFenceCallback;
+	callback.userdata1 = webgpu_fence;
+	wgpuQueueOnSubmittedWorkDone(webgpu_device->queue, callback);
+
 	wgpuCommandBufferRelease(command_buffer);
 	return true;
 }

Sources/Backends/WebGPU/WebGPUDevice.c

@@ -13,7 +13,6 @@
 #include "WebGPUBuffer.h"
 #include "WebGPUImage.h"
 #include "WebGPUComputePass.h"
-#include "webgpu.h"
 
 #ifndef PULSE_PLAT_WASM
 	#include <wgpu.h>

Sources/Backends/WebGPU/WebGPUFence.c

@@ -3,20 +3,59 @@
 // For conditions of distribution and use, see copyright notice in LICENSE
 
 #include <Pulse.h>
+#include "../../PulseInternal.h"
 #include "WebGPU.h"
+#include "WebGPUFence.h"
 
 PulseFence WebGPUCreateFence(PulseDevice device)
 {
+	PULSE_UNUSED(device);
+
+	PulseFence fence = (PulseFence)calloc(1, sizeof(PulseFence));
+	PULSE_CHECK_ALLOCATION_RETVAL(fence, PULSE_NULL_HANDLE);
+
+	WebGPUFence* webgpu_fence = (WebGPUFence*)calloc(1, sizeof(WebGPUFence));
+	PULSE_CHECK_ALLOCATION_RETVAL(webgpu_fence, PULSE_NULL_HANDLE);
+
+	atomic_store(&webgpu_fence->signal, true);
+
+	fence->driver_data = webgpu_fence;
+
+	return fence;
 }
 
 void WebGPUDestroyFence(PulseDevice device, PulseFence fence)
 {
+	PULSE_UNUSED(device);
+	free(fence->driver_data);
+	free(fence);
 }
 
 bool WebGPUIsFenceReady(PulseDevice device, PulseFence fence)
 {
+	PULSE_UNUSED(device);
+	WebGPUFence* webgpu_fence = WEBGPU_RETRIEVE_DRIVER_DATA_AS(fence, WebGPUFence*);
+	return atomic_load(&webgpu_fence->signal) == true;
 }
 
+#include <stdio.h>
+
 bool WebGPUWaitForFences(PulseDevice device, const PulseFence* fences, uint32_t fences_count, bool wait_for_all)
 {
+	PULSE_UNUSED(device);
+	if(fences_count == 0)
+		return true;
+	uint32_t fences_to_wait = fences_count;
+	while(fences_to_wait != 0)
+	{
+		for(uint32_t i = 0; i < fences_count; i++)
+		{
+			if(WebGPUIsFenceReady(device, fences[i]))
+				fences_to_wait--;
+		}
+		if(!wait_for_all && fences_to_wait != fences_count)
+			return true;
+		PulseSleep(1); // 1ms
+	}
+	return true;
 }

Sources/Backends/WebGPU/WebGPUFence.h

@@ -8,9 +8,15 @@
 #define PULSE_WEBGPU_FENCE_H_
 
 #include <webgpu/webgpu.h>
+#include <stdatomic.h>
 
 #include <Pulse.h>
 
+typedef struct WebGPUFence
+{
+	atomic_bool signal;
+} WebGPUFence;
+
 PulseFence WebGPUCreateFence(PulseDevice device);
 void WebGPUDestroyFence(PulseDevice device, PulseFence fence);
 bool WebGPUIsFenceReady(PulseDevice device, PulseFence fence);

Sources/PulseInternal.c

@@ -4,16 +4,32 @@
 
 #include "PulseInternal.h"
 
-#include <tinycthread.h>
+#ifndef PULSE_PLAT_WASM
+	#include <tinycthread.h>
 
-PulseThreadID PulseGetThreadID()
-{
-	return (PulseThreadID)thrd_current();
-}
+	PulseThreadID PulseGetThreadID()
+	{
+		return (PulseThreadID)thrd_current();
+	}
 
-void PulseSleep(int32_t ms)
-{
-	if(ms <= 0)
-		return;
-	thrd_sleep(&(struct timespec){ .tv_sec = ms / 1000, .tv_nsec = (ms % 1000) * 1000000 }, PULSE_NULLPTR);
-}
+	void PulseSleep(int32_t ms)
+	{
+		if(ms <= 0)
+			return;
+		thrd_sleep(&(struct timespec){ .tv_sec = ms / 1000, .tv_nsec = (ms % 1000) * 1000000 }, PULSE_NULLPTR);
+	}
+#else
+	#include <emscripten/threading.h>
+
+	PulseThreadID PulseGetThreadID()
+	{
+		return (PulseThreadID)0;
+	}
+
+	void PulseSleep(int32_t ms)
+	{
+		if(ms <= 0)
+			return;
+		emscripten_thread_sleep(ms);
+	}
+#endif

xmake.lua

@@ -23,11 +23,10 @@ local backends = {
 	},
 	WebGPU = {
 		option = "webgpu",
-		packages = { "wgpu-native" },
 		default = is_plat("wasm"),
 		custom = function()
-			if is_plat("wasm") then
-				add_defines("PULSE_PLAT_WASM")
+			if not is_plat("wasm") then
+				add_packages("wgpu-native")
 			end
 		end
 	}
@@ -72,10 +71,10 @@ option("unitybuild", { description = "Build the library using unity build", defa
 
 if is_plat("wasm") then
 	backends.Vulkan = nil
+else
+	add_requires("tiny-c-thread", "wgpu-native")
 end
 
-add_requires("tiny-c-thread")
-
 for name, module in pairs(backends) do
 	if has_config(module.option) then
 		if module.packages then
@@ -89,16 +88,23 @@ target("pulse_gpu")
 	add_defines("PULSE_BUILD")
 	add_headerfiles("Sources/*.h", { prefixdir = "private", install = false })
 	add_headerfiles("Sources/*.inl", { prefixdir = "private", install = false })
-	add_packages("tiny-c-thread")
-	
+
+	if not is_plat("wasm") then
+		add_packages("tiny-c-thread")
+	end
+
 	add_files("Sources/*.c")
 
 	if has_config("unitybuild") then
 		add_rules("c.unity_build", { batchsize = 6 })
 	end
 
+	if is_plat("wasm") then
+		add_defines("PULSE_PLAT_WASM")
+	end
+
 	for name, module in pairs(backends) do
-		if has_config(module.option) then
+		if module ~= nil and has_config(module.option) then
 			if module.packages then
 				add_packages(table.unpack(module.packages))
 			end
@@ -124,4 +130,7 @@ target("pulse_gpu")
 target_end()
 
 includes("Examples/*.lua")
-includes("Tests/Vulkan/*.lua")
+
+if not is_plat("wasm") then
+	includes("Tests/Vulkan/*.lua")
+end