Function checkWebGLCapabilities

src/webgl/utils.js:478–499

({ GL, webglVersion })

}

export function checkWebGLCapabilities({ GL, webglVersion }) {
  const gl = GL;
  const supportsFloat =
    webglVersion === constants.WEBGL2
      ? gl.getExtension("EXT_color_buffer_float") &&
        gl.getExtension("EXT_float_blend")
      : gl.getExtension("OES_texture_float");
  const supportsFloatLinear =
    supportsFloat && gl.getExtension("OES_texture_float_linear");
  const supportsHalfFloat =
    webglVersion === constants.WEBGL2
      ? gl.getExtension("EXT_color_buffer_float")
      : gl.getExtension("OES_texture_half_float");
  const supportsHalfFloatLinear =
    supportsHalfFloat && gl.getExtension("OES_texture_half_float_linear");
  return {
    float: supportsFloat,
    floatLinear: supportsFloatLinear,
    halfFloat: supportsHalfFloat,
    halfFloatLinear: supportsHalfFloatLinear,
  };
}