Repo created

iphone/Maps/Classes/MetalContextFactory.mm

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+#import "MetalContextFactory.h"
+
+#include "base/assert.hpp"
+
+namespace
+{
+class DrawMetalContext : public dp::metal::MetalBaseContext
+{
+public:
+  DrawMetalContext(CAMetalLayer * metalLayer, m2::PointU const & screenSize)
+    : dp::metal::MetalBaseContext(metalLayer.device, screenSize, [this]{ return [m_metalLayer nextDrawable]; })
+    , m_metalLayer(metalLayer)
+  {}
+
+  void Resize(uint32_t w, uint32_t h) override
+  {
+    m_metalLayer.drawableSize = CGSize{static_cast<float>(w), static_cast<float>(h)};
+    ResetFrameDrawable();
+    dp::metal::MetalBaseContext::Resize(w, h);
+  }
+
+private:
+  CAMetalLayer * m_metalLayer;
+};
+
+class UploadMetalContext : public dp::metal::MetalBaseContext
+{
+public:
+  explicit UploadMetalContext(id<MTLDevice> device)
+    : dp::metal::MetalBaseContext(device, {}, nullptr)
+  {}
+
+  void Present() override {}
+  void MakeCurrent() override {}
+  void Resize(uint32_t w, uint32_t h) override {}
+  void SetFramebuffer(ref_ptr<dp::BaseFramebuffer> framebuffer) override {}
+  void Init(dp::ApiVersion apiVersion) override
+  {
+    CHECK_EQUAL(apiVersion, dp::ApiVersion::Metal, ());
+  }
+
+  void SetClearColor(dp::Color const & color) override {}
+  void Clear(uint32_t clearBits, uint32_t storeBits) override {}
+  void Flush() override {}
+  void SetDepthTestEnabled(bool enabled) override {}
+  void SetDepthTestFunction(dp::TestFunction depthFunction) override {}
+  void SetStencilTestEnabled(bool enabled) override {}
+  void SetStencilFunction(dp::StencilFace face, dp::TestFunction stencilFunction) override {}
+  void SetStencilActions(dp::StencilFace face, dp::StencilAction stencilFailAction,
+                         dp::StencilAction depthFailAction, dp::StencilAction passAction) override {}
+};
+}  // namespace
+
+MetalContextFactory::MetalContextFactory(CAMetalLayer * metalLayer, m2::PointU const & screenSize)
+{
+  m_drawContext = make_unique_dp<DrawMetalContext>(metalLayer, screenSize);
+  m_uploadContext = make_unique_dp<UploadMetalContext>(m_drawContext->GetMetalDevice());
+}
+
+dp::GraphicsContext * MetalContextFactory::GetDrawContext()
+{
+  return m_drawContext.get();
+}
+
+dp::GraphicsContext * MetalContextFactory::GetResourcesUploadContext()
+{
+  return m_uploadContext.get();
+}
+
+void MetalContextFactory::SetPresentAvailable(bool available)
+{
+  m_drawContext->SetPresentAvailable(available);
+}