1 files changed, 53 insertions, 0 deletions
diff --git a/src/gpu/mtl/GrMtlCopyManager.h b/src/gpu/mtl/GrMtlCopyManager.h
new file mode 100644
index 0000000000..7899397e1c
--- /dev/null
+++ b/src/gpu/mtl/GrMtlCopyManager.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+*/
+
+#ifndef GrMtlCopyManager_DEFINED
+#define GrMtlCopyManager_DEFINED
+
+#include "GrTypes.h"
+
+#import <metal/metal.h>
+
+class GrMtlCopyPipelineState;
+class GrMtlGpu;
+class GrSurface;
+struct SkIPoint;
+struct SkIRect;
+
+class GrMtlCopyManager {
+public:
+    GrMtlCopyManager(GrMtlGpu* gpu) : fGpu(gpu) {}
+
+    bool copySurfaceAsDraw(GrSurface* dst, GrSurfaceOrigin dstOrigin,
+                           GrSurface* src, GrSurfaceOrigin srcOrigin,
+                           const SkIRect& srcRect, const SkIPoint& dstPoint,
+                           bool canDiscardOutsideDstRect);
+
+    static bool IsCompatible(const GrMtlCopyPipelineState*, MTLPixelFormat dstPixelFormat);
+
+private:
+    enum BufferIndex {
+        kUniform_BufferIndex,
+        kAttribute_BufferIndex,
+    };
+
+    void createCopyProgramBuffer();
+    void createCopyProgramShaders();
+    void createCopyProgramVertexDescriptor();
+
+    void createCopyProgram();
+
+    id<MTLSamplerState>  fSamplerState;
+    id<MTLBuffer>        fVertexAttributeBuffer;
+    id<MTLFunction>      fVertexFunction;
+    id<MTLFunction>      fFragmentFunction;
+    MTLVertexDescriptor* fVertexDescriptor;
+
+    GrMtlGpu* fGpu;
+};
+
+#endif