Initial engine repository

2026-06-08 19:58:35 +08:00
commit 7a925c3736
137 changed files with 162421 additions and 0 deletions
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+#pragma once
+
+#include <frostbite2D/graphics/types.h>
+#include <frostbite2D/graphics/texture.h>
+#include <frostbite2D/graphics/shader.h>
+#include <frostbite2D/types/type_alias.h>
+
+namespace frostbite2D {
+
+struct BatchKey {
+  uint32_t shaderID;
+  uint32_t textureID;
+  uint32_t blendMode;
+  
+  bool operator<(const BatchKey& other) const {
+    if (shaderID != other.shaderID) return shaderID < other.shaderID;
+    if (textureID != other.textureID) return textureID < other.textureID;
+    return blendMode < other.blendMode;
+  }
+};
+
+class Batch {
+public:
+  static constexpr int MAX_QUADS = 2048;
+  static constexpr int MAX_VERTICES = MAX_QUADS * 4;
+  static constexpr int MAX_INDICES = MAX_QUADS * 6;
+  
+  Batch();
+  ~Batch();
+  
+  bool init();
+  void shutdown();
+  
+  void begin();
+  void end();
+  
+  void submitQuad(const Quad& quad, const Transform2D& transform,
+                Ptr<Texture> texture, Shader* shader,
+                BlendMode blendMode = BlendMode::Normal);
+  
+  void flush();
+  void flushIfNeeded(const BatchKey& newKey, Shader* shader, Ptr<Texture> texture);
+  uint32 drawCallCount() const { return drawCallCount_; }
+  
+ private:
+  void setupMesh();
+  void flushCurrentBatch();
+  
+  struct BatchData {
+    std::vector<Vertex> vertices;
+    std::vector<uint16> indices;
+    BatchKey key;
+    Shader* shader = nullptr;
+    Ptr<Texture> texture;
+  };
+  
+  uint32_t vao_ = 0;
+  uint32_t vbo_ = 0;
+  uint32_t ibo_ = 0;
+  
+  BatchData currentBatch_;
+  std::vector<BatchData> batches_;
+  
+  bool begun_ = false;
+  uint32 drawCallCount_ = 0;
+};
+
+}