Merge pull request #14126 from mapbox/gfx-refactor-4

Graphics refactor #4

1 files changed, 25 insertions, 1 deletions

diff --git a/src/mbgl/gfx/context.hpp b/src/mbgl/gfx/context.hpp
index 5ec73b8a41..90b62c94a4 100644
--- a/src/mbgl/gfx/context.hpp
+++ b/src/mbgl/gfx/context.hpp
@@ -5,14 +5,22 @@
 #include <mbgl/gfx/index_vector.hpp>
 #include <mbgl/gfx/index_buffer.hpp>
 #include <mbgl/gfx/texture.hpp>
+#include <mbgl/gfx/draw_scope.hpp>
+#include <mbgl/gfx/program.hpp>
 #include <mbgl/gfx/types.hpp>
 
 namespace mbgl {
+
+class ProgramParameters;
+
 namespace gfx {
 
 class Context {
 protected:
-    Context() = default;
+    Context(ContextType type_) : backend(type_) {
+    }
+
+    const ContextType backend;
 
 public:
     Context(Context&&) = delete;
@@ -89,6 +97,22 @@ protected:
         Size, const void* data, TexturePixelType, TextureChannelDataType) = 0;
     virtual void updateTextureResource(const TextureResource&, Size, const void* data,
         TexturePixelType, TextureChannelDataType) = 0;
+
+public:
+    DrawScope createDrawScope() {
+        return { createDrawScopeResource() };
+    }
+
+protected:
+    virtual std::unique_ptr<DrawScopeResource> createDrawScopeResource() = 0;
+
+public:
+    template <typename Name>
+    std::unique_ptr<Program<Name>> createProgram(const ProgramParameters&);
+
+private:
+    template <typename Backend, typename Name>
+    std::unique_ptr<Program<Name>> createProgram(const ProgramParameters&);
 };
 
 } // namespace gfx