3 files changed, 102 insertions, 0 deletions
diff --git a/src/deps/skia/include/gpu/mtl/BUILD.bazel b/src/deps/skia/include/gpu/mtl/BUILD.bazel
new file mode 100644
index 000000000..9881ff21f
--- /dev/null
+++ b/src/deps/skia/include/gpu/mtl/BUILD.bazel
@@ -0,0 +1,18 @@
+load("//bazel:macros.bzl", "generated_cc_atom")
+
+generated_cc_atom(
+    name = "GrMtlBackendContext_hdr",
+    hdrs = ["GrMtlBackendContext.h"],
+    visibility = ["//:__subpackages__"],
+    deps = [":GrMtlTypes_hdr"],
+)
+
+generated_cc_atom(
+    name = "GrMtlTypes_hdr",
+    hdrs = ["GrMtlTypes.h"],
+    visibility = ["//:__subpackages__"],
+    deps = [
+        "//include/gpu:GrTypes_hdr",
+        "//include/ports:SkCFObject_hdr",
+    ],
+)
diff --git a/src/deps/skia/include/gpu/mtl/GrMtlBackendContext.h b/src/deps/skia/include/gpu/mtl/GrMtlBackendContext.h
new file mode 100644
index 000000000..0d88f479a
--- /dev/null
+++ b/src/deps/skia/include/gpu/mtl/GrMtlBackendContext.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2020 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrMtlBackendContext_DEFINED
+#define GrMtlBackendContext_DEFINED
+
+#include "include/gpu/mtl/GrMtlTypes.h"
+
+// The BackendContext contains all of the base Metal objects needed by the GrMtlGpu. The assumption
+// is that the client will set these up and pass them to the GrMtlGpu constructor.
+struct SK_API GrMtlBackendContext {
+    sk_cfp<GrMTLHandle> fDevice;
+    sk_cfp<GrMTLHandle> fQueue;
+    sk_cfp<GrMTLHandle> fBinaryArchive;
+};
+
+#endif
diff --git a/src/deps/skia/include/gpu/mtl/GrMtlTypes.h b/src/deps/skia/include/gpu/mtl/GrMtlTypes.h
new file mode 100644
index 000000000..f7a232e3c
--- /dev/null
+++ b/src/deps/skia/include/gpu/mtl/GrMtlTypes.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrMtlTypes_DEFINED
+#define GrMtlTypes_DEFINED
+
+#include "include/gpu/GrTypes.h"
+#include "include/ports/SkCFObject.h"
+
+/**
+ * Declares typedefs for Metal types used in Ganesh cpp code
+ */
+using GrMTLPixelFormat = unsigned int;
+using GrMTLTextureUsage = unsigned int;
+using GrMTLStorageMode = unsigned int;
+using GrMTLHandle = const void*;
+
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef __APPLE__
+
+#include <TargetConditionals.h>
+
+#if TARGET_OS_SIMULATOR
+#define SK_API_AVAILABLE_CA_METAL_LAYER SK_API_AVAILABLE(macos(10.11), ios(13.0))
+#else  // TARGET_OS_SIMULATOR
+#define SK_API_AVAILABLE_CA_METAL_LAYER SK_API_AVAILABLE(macos(10.11), ios(8.0))
+#endif  // TARGET_OS_SIMULATOR
+
+/**
+ * Types for interacting with Metal resources created externally to Skia.
+ * This is used by GrBackendObjects.
+ */
+struct GrMtlTextureInfo {
+public:
+    GrMtlTextureInfo() {}
+
+    sk_cfp<GrMTLHandle> fTexture;
+
+    bool operator==(const GrMtlTextureInfo& that) const {
+        return fTexture == that.fTexture;
+    }
+};
+
+struct GrMtlSurfaceInfo {
+    uint32_t fSampleCount = 1;
+    uint32_t fLevelCount = 0;
+    GrProtected fProtected = GrProtected::kNo;
+
+    // Since we aren't in an Obj-C header we can't directly use Mtl types here. Each of these can
+    // cast to their mapped Mtl types list below.
+    GrMTLPixelFormat fFormat = 0;       // MTLPixelFormat fFormat = MTLPixelFormatInvalid;
+    GrMTLTextureUsage fUsage = 0;       // MTLTextureUsage fUsage = MTLTextureUsageUnknown;
+    GrMTLStorageMode fStorageMode = 0;  // MTLStorageMode fStorageMode = MTLStorageModeShared;
+};
+
+#endif
+
+#endif