Function createFBO

src/content/Animations/SplashCursor/SplashCursor.jsx:590–621

(w, h, internalFormat, format, type, param)

    }

    function createFBO(w, h, internalFormat, format, type, param) {
      gl.activeTexture(gl.TEXTURE0);
      let texture = gl.createTexture();
      gl.bindTexture(gl.TEXTURE_2D, texture);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, param);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, param);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
      gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, w, h, 0, format, type, null);

      let fbo = gl.createFramebuffer();
      gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
      gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
      gl.viewport(0, 0, w, h);
      gl.clear(gl.COLOR_BUFFER_BIT);

      let texelSizeX = 1.0 / w;
      let texelSizeY = 1.0 / h;
      return {
        texture,
        fbo,
        width: w,
        height: h,
        texelSizeX,
        texelSizeY,
        attach(id) {
          gl.activeTexture(gl.TEXTURE0 + id);
          gl.bindTexture(gl.TEXTURE_2D, texture);
          return id;
        }
      };
    }

    function createDoubleFBO(w, h, internalFormat, format, type, param) {
      let fbo1 = createFBO(w, h, internalFormat, format, type, param);