[graphite] Stub in more Metal classes

Bug: skia:12466
Change-Id: I83ebf7dbea0d67b3c121b011f62e7b729f5e5257
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453577
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>

experimental/graphite/src/Pipeline.h

@@ -13,7 +13,7 @@ namespace skgpu {
 // TODO: derive this from something like GrManagedResource
 class Pipeline {
 public:
-    ~Pipeline();
+    virtual ~Pipeline();
 
 protected:
     Pipeline();

experimental/graphite/src/mtl/MtlCaps.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef skgpu_MtlCaps_DEFINED
+#define skgpu_MtlCaps_DEFINED
+
+#include "experimental/graphite/src/Caps.h"
+
+#import <Metal/Metal.h>
+
+namespace skgpu::mtl {
+
+class Caps final : public skgpu::Caps {
+public:
+    Caps(id<MTLDevice>);
+    ~Caps() final {}
+
+private:
+};
+
+} // namespace skgpu::mtl
+
+#endif // skgpu_MtlCaps_DEFINED

experimental/graphite/src/mtl/MtlCaps.mm

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "experimental/graphite/src/mtl/MtlCaps.h"
+
+namespace skgpu::mtl {
+
+Caps::Caps(id<MTLDevice> device) {
+}
+
+} // namespace skgpu::mtl

experimental/graphite/src/mtl/MtlCommandBuffer.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef skgpu_MtlCommandBuffer_DEFINED
+#define skgpu_MtlCommandBuffer_DEFINED
+
+#include "experimental/graphite/src/CommandBuffer.h"
+
+#import <Metal/Metal.h>
+
+namespace skgpu::mtl {
+
+class CommandBuffer final : public skgpu::CommandBuffer {
+public:
+    CommandBuffer();
+    ~CommandBuffer() override {}
+
+private:
+};
+
+} // namespace skgpu::mtl
+
+#endif // skgpu_MtlCommandBuffer_DEFINED

experimental/graphite/src/mtl/MtlCommandBuffer.mm

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "experimental/graphite/src/mtl/MtlCommandBuffer.h"
+
+namespace skgpu::mtl {
+
+CommandBuffer::CommandBuffer() {
+}
+
+} // namespace skgpu::mtl

experimental/graphite/src/mtl/MtlPipeline.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef skgpu_MtlPipeline_DEFINED
+#define skgpu_MtlPipeline_DEFINED
+
+#include "experimental/graphite/src/Pipeline.h"
+
+#import <Metal/Metal.h>
+
+namespace skgpu::mtl {
+
+class Pipeline final : public skgpu::Pipeline {
+public:
+    Pipeline();
+    ~Pipeline() override {}
+
+private:
+};
+
+} // namespace skgpu::mtl
+
+#endif // skgpu_MtlPipeline_DEFINED

experimental/graphite/src/mtl/MtlPipeline.mm

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "experimental/graphite/src/mtl/MtlPipeline.h"
+
+namespace skgpu::mtl {
+
+Pipeline::Pipeline() {
+}
+
+} // namespace skgpu::mtl

experimental/graphite/src/mtl/MtlResourceProvider.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef skgpu_MtlResourceProvider_DEFINED
+#define skgpu_MtlResourceProvider_DEFINED
+
+#include "experimental/graphite/src/ResourceProvider.h"
+
+#import <Metal/Metal.h>
+
+namespace skgpu::mtl {
+
+class ResourceProvider final : public skgpu::ResourceProvider {
+public:
+    ResourceProvider();
+    ~ResourceProvider() override {}
+
+private:
+};
+
+} // namespace skgpu::mtl
+
+#endif // skgpu_MtlResourceProvider_DEFINED

experimental/graphite/src/mtl/MtlResourceProvider.mm

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "experimental/graphite/src/mtl/MtlResourceProvider.h"
+
+namespace skgpu::mtl {
+
+ResourceProvider::ResourceProvider() {
+}
+
+} // namespace skgpu::mtl

gn/graphite.gni

@@ -43,6 +43,14 @@ skia_graphite_sources = [
 ]
 
 skia_graphite_mtl_sources = [
+  "$_src/mtl/MtlCaps.h",
+  "$_src/mtl/MtlCaps.mm",
+  "$_src/mtl/MtlCommandBuffer.h",
+  "$_src/mtl/MtlCommandBuffer.mm",
   "$_src/mtl/MtlGpu.h",
   "$_src/mtl/MtlGpu.mm",
+  "$_src/mtl/MtlPipeline.h",
+  "$_src/mtl/MtlPipeline.mm",
+  "$_src/mtl/MtlResourceProvider.h",
+  "$_src/mtl/MtlResourceProvider.mm",
 ]