77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
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#pragma once
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#include <easy2d/graphics/render_backend.h>
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#include <easy2d/graphics/opengl/gl_shader.h>
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#include <easy2d/graphics/opengl/gl_sprite_batch.h>
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// 使用标准 GLES3.2
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#include <GLES3/gl32.h>
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namespace easy2d {
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class Window;
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// ============================================================================
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// OpenGL 渲染器实现
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// ============================================================================
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class GLRenderer : public RenderBackend {
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public:
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GLRenderer();
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~GLRenderer() override;
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// RenderBackend 接口实现
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bool init(Window* window) override;
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void shutdown() override;
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void beginFrame(const Color& clearColor) override;
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void endFrame() override;
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void setViewport(int x, int y, int width, int height) override;
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void setVSync(bool enabled) override;
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void setBlendMode(BlendMode mode) override;
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void setViewProjection(const glm::mat4& matrix) override;
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Ptr<Texture> createTexture(int width, int height, const uint8_t* pixels, int channels) override;
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Ptr<Texture> loadTexture(const std::string& filepath) override;
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void beginSpriteBatch() override;
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void drawSprite(const Texture& texture, const Rect& destRect, const Rect& srcRect,
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const Color& tint, float rotation, const Vec2& anchor) override;
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void drawSprite(const Texture& texture, const Vec2& position, const Color& tint) override;
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void endSpriteBatch() override;
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void drawLine(const Vec2& start, const Vec2& end, const Color& color, float width) override;
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void drawRect(const Rect& rect, const Color& color, float width) override;
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void fillRect(const Rect& rect, const Color& color) override;
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void drawCircle(const Vec2& center, float radius, const Color& color, int segments, float width) override;
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void fillCircle(const Vec2& center, float radius, const Color& color, int segments) override;
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void drawTriangle(const Vec2& p1, const Vec2& p2, const Vec2& p3, const Color& color, float width) override;
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void fillTriangle(const Vec2& p1, const Vec2& p2, const Vec2& p3, const Color& color) override;
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void drawPolygon(const std::vector<Vec2>& points, const Color& color, float width) override;
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void fillPolygon(const std::vector<Vec2>& points, const Color& color) override;
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Ptr<FontAtlas> createFontAtlas(const std::string& filepath, int fontSize, bool useSDF = false) override;
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void drawText(const FontAtlas& font, const String& text, const Vec2& position, const Color& color) override;
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void drawText(const FontAtlas& font, const String& text, float x, float y, const Color& color) override;
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Stats getStats() const override { return stats_; }
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void resetStats() override;
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private:
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Window* window_;
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GLSpriteBatch spriteBatch_;
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GLShader shapeShader_;
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GLuint shapeVao_;
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GLuint shapeVbo_;
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glm::mat4 viewProjection_;
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Stats stats_;
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bool vsync_;
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void initShapeRendering();
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void setupBlendMode(BlendMode mode);
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};
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} // namespace easy2d
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