Canvas.h

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#pragma once
#include "graphics/Canvas.h"
#include "graphics/Texture.h"
#include "graphics/webgpu/Graphics.h"
 
#include <optional>
 
#include <glm/glm.hpp>
 
namespace eve::graphics::webgpu {
 
class OffscreenCanvas final : public eve::graphics::Canvas {
public:
    OffscreenCanvas(Graphics *gfx, int width, int height, bool hdr = false);
    ~OffscreenCanvas() override;
 
    int getWidth() const override { return width; }
    int getHeight() const override { return height; }
    Texture *getTexture() override { return &colorTex; }
    bool isHDR() const { return hdr; }
 
    void clear(std::optional<Color> color, std::optional<int> stencil,
               std::optional<double> depth) override;
    Color getPixel(int x, int y) override;
    image::ImageData *newImageData() override;
    image::ImageData *newHDRImageData() override;
 
    void draw(Canvas *, const glm::mat4 &) const override {}
    void draw(eve::graphics::Graphics *, const glm::mat4 &) const override {}
 
    bool clearRequested = false;
    Color clearColor{0.f, 0.f, 0.f, 1.f};
 
    friend class Graphics;
 
private:
    Graphics *gfx;
    int width = 0;
    int height = 0;
    wgpu::Texture color;
    wgpu::TextureView colorView;
    wgpu::Texture depth;
    wgpu::TextureView depthView;
    GpuTexture colorGpu;
    Texture colorTex;
    bool hdr = false;
};
 
}  // namespace eve::graphics::webgpu