1 files changed, 109 insertions, 0 deletions
diff --git a/dom/webgpu/ComputePassEncoder.cpp b/dom/webgpu/ComputePassEncoder.cpp
new file mode 100644
index 0000000000..2820a575e8
--- /dev/null
+++ b/dom/webgpu/ComputePassEncoder.cpp
@@ -0,0 +1,109 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/WebGPUBinding.h"
+#include "ComputePassEncoder.h"
+#include "BindGroup.h"
+#include "ComputePipeline.h"
+#include "CommandEncoder.h"
+
+#include "mozilla/webgpu/ffi/wgpu.h"
+
+namespace mozilla::webgpu {
+
+GPU_IMPL_CYCLE_COLLECTION(ComputePassEncoder, mParent, mUsedBindGroups,
+                          mUsedPipelines)
+GPU_IMPL_JS_WRAP(ComputePassEncoder)
+
+void ffiWGPUComputePassDeleter::operator()(ffi::WGPUComputePass* raw) {
+  if (raw) {
+    ffi::wgpu_compute_pass_destroy(raw);
+  }
+}
+
+ffi::WGPUComputePass* BeginComputePass(
+    RawId aEncoderId, const dom::GPUComputePassDescriptor& aDesc) {
+  MOZ_RELEASE_ASSERT(aEncoderId);
+  ffi::WGPUComputePassDescriptor desc = {};
+
+  webgpu::StringHelper label(aDesc.mLabel);
+  desc.label = label.Get();
+
+  return ffi::wgpu_command_encoder_begin_compute_pass(aEncoderId, &desc);
+}
+
+ComputePassEncoder::ComputePassEncoder(
+    CommandEncoder* const aParent, const dom::GPUComputePassDescriptor& aDesc)
+    : ChildOf(aParent), mPass(BeginComputePass(aParent->mId, aDesc)) {}
+
+ComputePassEncoder::~ComputePassEncoder() {
+  if (mValid) {
+    mValid = false;
+  }
+}
+
+void ComputePassEncoder::SetBindGroup(
+    uint32_t aSlot, const BindGroup& aBindGroup,
+    const dom::Sequence<uint32_t>& aDynamicOffsets) {
+  if (mValid) {
+    mUsedBindGroups.AppendElement(&aBindGroup);
+    ffi::wgpu_compute_pass_set_bind_group(mPass.get(), aSlot, aBindGroup.mId,
+                                          aDynamicOffsets.Elements(),
+                                          aDynamicOffsets.Length());
+  }
+}
+
+void ComputePassEncoder::SetPipeline(const ComputePipeline& aPipeline) {
+  if (mValid) {
+    mUsedPipelines.AppendElement(&aPipeline);
+    ffi::wgpu_compute_pass_set_pipeline(mPass.get(), aPipeline.mId);
+  }
+}
+
+void ComputePassEncoder::DispatchWorkgroups(uint32_t workgroupCountX,
+                                            uint32_t workgroupCountY,
+                                            uint32_t workgroupCountZ) {
+  if (mValid) {
+    ffi::wgpu_compute_pass_dispatch_workgroups(
+        mPass.get(), workgroupCountX, workgroupCountY, workgroupCountZ);
+  }
+}
+
+void ComputePassEncoder::DispatchWorkgroupsIndirect(
+    const Buffer& aIndirectBuffer, uint64_t aIndirectOffset) {
+  if (mValid) {
+    ffi::wgpu_compute_pass_dispatch_workgroups_indirect(
+        mPass.get(), aIndirectBuffer.mId, aIndirectOffset);
+  }
+}
+
+void ComputePassEncoder::PushDebugGroup(const nsAString& aString) {
+  if (mValid) {
+    const NS_ConvertUTF16toUTF8 utf8(aString);
+    ffi::wgpu_compute_pass_push_debug_group(mPass.get(), utf8.get(), 0);
+  }
+}
+void ComputePassEncoder::PopDebugGroup() {
+  if (mValid) {
+    ffi::wgpu_compute_pass_pop_debug_group(mPass.get());
+  }
+}
+void ComputePassEncoder::InsertDebugMarker(const nsAString& aString) {
+  if (mValid) {
+    const NS_ConvertUTF16toUTF8 utf8(aString);
+    ffi::wgpu_compute_pass_insert_debug_marker(mPass.get(), utf8.get(), 0);
+  }
+}
+
+void ComputePassEncoder::End() {
+  if (mValid) {
+    mValid = false;
+    auto* pass = mPass.release();
+    MOZ_ASSERT(pass);
+    mParent->EndComputePass(*pass);
+  }
+}
+
+}  // namespace mozilla::webgpu