UwUGL/buffer.cpp

#pragma once

#include <stdint.h>

#include "datatypes.cpp"
#include "helpers.cpp"
// #include "shader.cpp"

namespace UwU {
      // Buffer object - can be a wayland surface or a virtual buffer
  class Buffer {
    public:
        Buffer(uint16_t width, uint16_t height) {
        this->pixels = new uint8_t[width * height * 4];
        this->width = width;
        this->height = height;
        this->stride = width * 4;
        }
        // Buffer(uint8_t* pixels, uint16_t width, uint16_t height, uint16_t stride) {
        //   this->pixels = pixels;
        //   this->width = width;
        //   this->height = height;
        //   this->stride = stride;
        // }
        Buffer() {}
        uint8_t* pixels;
        uint16_t width;
        uint16_t height;
        uint16_t stride;

        void drawPixel(uint16_t x, uint16_t y, Color color) {
            // if (color.a == 0) {return;}
            size_t i = (size_t)y * stride + (size_t)x * 4;
            // uint8_t b0 = pixels[i + 0];
            // uint8_t g0 = pixels[i + 1];
            // uint8_t r0 = pixels[i + 2];
            // uint8_t b = Helpers::lerp8(b0, color.b, color.a);
            // uint8_t g = Helpers::lerp8(g0, color.g, color.a);
            // uint8_t r = Helpers::lerp8(r0, color.r, color.a);
            pixels[i + 0] = color.b;    // B
            pixels[i + 1] = color.g;    // G
            pixels[i + 2] = color.r;    // R
            pixels[i + 3] = 0xff;       // A
            return;
        }
  };
}