Method _renderScanlines

src/tools/texture-lab/renderer.js:690–711

(params, inputTexture, width, height, flipY = 1.0, renderScale = 1.0)

  }

  _renderScanlines(params, inputTexture, width, height, flipY = 1.0, renderScale = 1.0) {
    const gl = this.gl;
    const program = this.programs.scanlines;

    this._useProgram(program, flipY);

    gl.activeTexture(gl.TEXTURE0);
    gl.bindTexture(gl.TEXTURE_2D, inputTexture);

    // Scale spacing proportionally to render resolution so export matches preview
    const scaledSpacing = params.spacing * renderScale;

    gl.uniform1i(program.uniforms.u_image, 0);
    gl.uniform1f(program.uniforms.u_spacing, scaledSpacing);
    gl.uniform1f(program.uniforms.u_thickness, params.thickness);
    gl.uniform1f(program.uniforms.u_opacity, params.opacity);
    gl.uniform1i(program.uniforms.u_horizontal, params.horizontal ? 1 : 0);
    gl.uniform1f(program.uniforms.u_offset, params.offset);
    gl.uniform2f(program.uniforms.u_resolution, width, height);

    gl.drawArrays(gl.TRIANGLES, 0, 6);
  }

  _renderPixelate(params, inputTexture, width, height, flipY = 1.0, renderScale = 1.0) {
    const gl = this.gl;