RenderTarget.hpp

#include "primitives/Texture.hpp"
 
#ifndef RENDERTARGET_HPP
#define RENDERTARGET_HPP
 
namespace t {
 
template <typename BufferType> class RenderTarget {
public:
  int width;
  int height;
  Texture<BufferType> texture;
 
  RenderTarget(int _width, int _height, TextureFormat _format)
      : width(_width), height(_height), texture(_width, _height, _format) {}
 
  Color read(int x, int y) {
    switch (this->texture.format) {
    case TextureFormat::RgbDouble:
      return Color(texture.image[x * 3 + y * width * 3],
                   texture.image[x * 3 + y * width * 3 + 1],
                   texture.image[x * 3 + y * width * 3 + 2]);
 
    case TextureFormat::Depth:
      const auto depth = texture.image[x + y * width];
      return Color(depth, depth, depth);
    }
 
    return Color(0, 0, 0);
  }
 
  void write(int x, int y, Color color) {
    switch (this->texture.format) {
    case TextureFormat::RgbDouble:
      texture.image[x * 3 + y * width * 3] = color.x;
      texture.image[x * 3 + y * width * 3 + 1] = color.y;
      texture.image[x * 3 + y * width * 3 + 2] = color.z;
      break;
 
    case TextureFormat::Depth:
      texture.image[x + y * width] = color.x;
      break;
    }
  }
};
 
} // namespace t
 
#endif // RENDERTARGET_HPP