1 files changed, 77 insertions, 0 deletions
diff --git a/source/blender/gpu/metal/mtl_backend.hh b/source/blender/gpu/metal/mtl_backend.hh
new file mode 100644
index 00000000000..0a84636b9e4
--- /dev/null
+++ b/source/blender/gpu/metal/mtl_backend.hh
@@ -0,0 +1,77 @@
+/** \file
+ * \ingroup gpu
+ */
+
+#pragma once
+
+#include "BLI_vector.hh"
+
+#include "gpu_backend.hh"
+#include "mtl_capabilities.hh"
+
+namespace blender {
+namespace gpu {
+
+class Batch;
+class DrawList;
+class FrameBuffer;
+class IndexBuf;
+class QueryPool;
+class Shader;
+class Texture;
+class UniformBuf;
+class VertBuf;
+class MTLContext;
+
+class MTLBackend : public GPUBackend {
+  friend class MTLContext;
+
+ public:
+  /* Capabilities. */
+  static MTLCapabilities capabilities;
+
+  inline ~MTLBackend()
+  {
+    MTLBackend::platform_exit();
+  }
+
+  static bool metal_is_supported();
+  inline static MTLBackend *get()
+  {
+    return static_cast<MTLBackend *>(GPUBackend::get());
+  }
+
+  void samplers_update() override;
+  inline void compute_dispatch(int groups_x_len, int groups_y_len, int groups_z_len) override
+  {
+    /* Placeholder */
+  }
+
+  /* MTL Allocators need to be implemented in separate .mm files, due to allocation of Objective-C
+   * objects. */
+  Context *context_alloc(void *ghost_window) override;
+  Batch *batch_alloc() override;
+  DrawList *drawlist_alloc(int list_length) override;
+  FrameBuffer *framebuffer_alloc(const char *name) override;
+  IndexBuf *indexbuf_alloc() override;
+  QueryPool *querypool_alloc() override;
+  Shader *shader_alloc(const char *name) override;
+  Texture *texture_alloc(const char *name) override;
+  UniformBuf *uniformbuf_alloc(int size, const char *name) override;
+  VertBuf *vertbuf_alloc() override;
+
+  /* Render Frame Coordination. */
+  void render_begin() override;
+  void render_end() override;
+  void render_step() override;
+  bool is_inside_render_boundary();
+
+ private:
+  static void platform_init(MTLContext *ctx);
+  static void platform_exit();
+
+  static void capabilities_init(MTLContext *ctx);
+};
+
+}  // namespace gpu
+}  // namespace blender
+\ No newline at end of file