Simplified renderer interface.

src/xenia/ui/gl/gl4_elemental_renderer.h

@@ -0,0 +1,87 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_UI_GL_GL4_ELEMENTAL_RENDERER_H_
+#define XENIA_UI_GL_GL4_ELEMENTAL_RENDERER_H_
+
+#include <cstdint>
+#include <memory>
+
+#include "el/graphics/renderer.h"
+#include "xenia/ui/gl/circular_buffer.h"
+#include "xenia/ui/gl/gl_context.h"
+
+namespace xe {
+namespace ui {
+namespace gl {
+
+class GL4ElementalRenderer : public el::graphics::Renderer {
+ public:
+  GL4ElementalRenderer(GLContext* context);
+  ~GL4ElementalRenderer() override;
+
+  static std::unique_ptr<GL4ElementalRenderer> Create(GLContext* context);
+
+  void BeginPaint(int render_target_w, int render_target_h) override;
+  void EndPaint() override;
+
+  std::unique_ptr<el::graphics::Bitmap> CreateBitmap(int width, int height,
+                                                     uint32_t* data) override;
+
+  void RenderBatch(Batch* batch) override;
+  void set_clip_rect(const el::Rect& rect) override;
+
+ private:
+  class GL4Bitmap : public el::graphics::Bitmap {
+   public:
+    GL4Bitmap(GLContext* context, GL4ElementalRenderer* renderer);
+    ~GL4Bitmap();
+
+    bool Init(int width, int height, uint32_t* data);
+    int width() override { return width_; }
+    int height() override { return height_; }
+    void set_data(uint32_t* data) override;
+
+    GLContext* context_ = nullptr;
+    GL4ElementalRenderer* renderer_ = nullptr;
+    int width_ = 0;
+    int height_ = 0;
+    GLuint handle_ = 0;
+    GLuint64 gpu_handle_ = 0;
+  };
+
+  static const uint32_t kMaxVertexBatchSize = 6 * 2048;
+
+  bool Initialize();
+  void Flush();
+
+  size_t max_vertex_batch_size() const override { return kMaxVertexBatchSize; }
+
+  GLContext* context_ = nullptr;
+
+  GLuint program_ = 0;
+  GLuint vao_ = 0;
+  CircularBuffer vertex_buffer_;
+
+  static const size_t kMaxCommands = 512;
+  struct {
+    GLenum prim_type;
+    size_t vertex_offset;
+    size_t vertex_count;
+  } draw_commands_[kMaxCommands] = {0};
+  uint32_t draw_command_count_ = 0;
+  GL4Bitmap* current_bitmap_ = nullptr;
+  Vertex vertices_[kMaxVertexBatchSize];
+};
+
+}  // namespace gl
+}  // namespace ui
+}  // namespace xe
+
+#endif  // XENIA_UI_GL_GL4_ELEMENTAL_RENDERER_H_