StylePass.h

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#pragma once
 
#include <string>
 
namespace eve::graphics {
class Canvas;
class Graphics;
class Shader;
class Texture;
}  // namespace eve::graphics
 
namespace eve::stylize {
 
class StylePass {
public:
    StylePass(const std::string &style, graphics::Shader *shader);
    ~StylePass() = default;
 
    StylePass(const StylePass &) = delete;
    StylePass &operator=(const StylePass &) = delete;
 
    std::string getStyle() const { return style_; }
    graphics::Shader *getShader() const { return shader_; }
 
    bool hasParam(const std::string &name) const;
    void setFloat(const std::string &name, float value);
    float getFloat(const std::string &name) const;
 
    void setTime(float seconds);
    float getTime() const;
 
    void apply(graphics::Graphics *gfx, graphics::Texture *source);
    void applyCanvas(graphics::Graphics *gfx, graphics::Canvas *source);
 
    void applyTo(graphics::Graphics *gfx, graphics::Texture *source, graphics::Canvas *dest);
    void applyCanvasTo(graphics::Graphics *gfx, graphics::Canvas *source, graphics::Canvas *dest);
 
private:
    void uploadScreenUniforms(int width, int height);
 
    std::string style_;
    graphics::Shader *shader_ = nullptr;  // owned by Graphics
};
 
}  // namespace eve::stylize