From a37f3bbd43760031e7f45fe480617bf112c0238c Mon Sep 17 00:00:00 2001
From: scawful <justin.scofield@outlook.com>
Date: Fri, 9 Aug 2024 18:56:57 -0400
Subject: [PATCH] add core::Renderer

---
 src/app/core/platform/renderer.h | 82 ++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/app/core/platform/renderer.h

diff --git a/src/app/core/platform/renderer.h b/src/app/core/platform/renderer.h
new file mode 100644
index 00000000..366acc78
--- /dev/null
+++ b/src/app/core/platform/renderer.h
@@ -0,0 +1,82 @@
+#ifndef YAZE_APP_CORE_PLATFORM_RENDERER_H
+#define YAZE_APP_CORE_PLATFORM_RENDERER_H
+
+#include <SDL.h>
+
+#include <memory>
+
+#include "absl/status/status.h"
+#include "app/core/common.h"
+#include "app/core/utils/sdl_deleter.h"
+#include "app/gfx/bitmap.h"
+
+namespace yaze {
+namespace app {
+namespace core {
+
+class Renderer : public ExperimentFlags {
+ public:
+  static Renderer& GetInstance() {
+    static Renderer instance;
+    return instance;
+  }
+
+  absl::Status CreateRenderer(SDL_Window* window) {
+    renderer_ = std::unique_ptr<SDL_Renderer, SDL_Deleter>(
+        SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED));
+    if (renderer_ == nullptr) {
+      return absl::InternalError(
+          absl::StrFormat("SDL_CreateRenderer: %s\n", SDL_GetError()));
+    }
+    SDL_SetRenderDrawBlendMode(renderer_.get(), SDL_BLENDMODE_BLEND);
+    SDL_SetRenderDrawColor(renderer_.get(), 0x00, 0x00, 0x00, 0x00);
+    return absl::OkStatus();
+  }
+
+  auto renderer() -> SDL_Renderer* { return renderer_.get(); }
+
+  /**
+   * @brief Used to render a bitmap to the screen.
+   */
+  void RenderBitmap(gfx::Bitmap* bitmap) {
+    if (flags()->kLoadTexturesAsStreaming) {
+      bitmap->CreateTexture(renderer_.get());
+    } else {
+      //bitmap->CreateTexture(renderer_);
+    }
+  }
+
+  /**
+   * @brief Used to update a bitmap on the screen.
+   */
+  void UpdateBitmap(gfx::Bitmap* bitmap, bool use_sdl_update = false) {
+    if (flags()->kLoadTexturesAsStreaming) {
+      bitmap->UpdateTexture(renderer_.get(), use_sdl_update);
+    } else {
+      //bitmap->UpdateTexture(renderer_);
+    }
+  }
+
+  absl::Status CreateAndRenderBitmap(int width, int height, int depth,
+                                     const Bytes& data, gfx::Bitmap& bitmap,
+                                     gfx::SnesPalette& palette) {
+    bitmap.Create(width, height, depth, data);
+    RETURN_IF_ERROR(bitmap.ApplyPalette(palette));
+    RenderBitmap(&bitmap);
+    return absl::OkStatus();
+  }
+
+ private:
+  Renderer() = default;
+
+  std::unique_ptr<SDL_Renderer, SDL_Deleter> renderer_;
+
+  Renderer(const Renderer&) = delete;
+  Renderer& operator=(const Renderer&) = delete;
+};
+
+}  // namespace core
+}  // namespace app
+}  // namespace yaze
+
+#endif
\ No newline at end of file