How to use

readRawTextFileFromAssets

method

in

com.novoda.spikes.arcore.google.rendering.ShaderUtil

/**
 * Converts a raw text file, saved as a resource, into an OpenGL ES shader.
 *
 * @param type     The type of shader we will be creating.
 * @param filename The filename of the asset file about to be turned into a shader.
 * @return The shader object handler.
 */
public static int loadGLShader(String tag, Context context, int type, String filename)
    throws IOException {
  String code = readRawTextFileFromAssets(context, filename);
  int shader = GLES20.glCreateShader(type);
  GLES20.glShaderSource(shader, code);
  GLES20.glCompileShader(shader);
  // Get the compilation status.
  final int[] compileStatus = new int[1];
  GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compileStatus, 0);
  // If the compilation failed, delete the shader.
  if (compileStatus[0] == 0) {
    Log.e(tag, "Error compiling shader: " + GLES20.glGetShaderInfoLog(shader));
    GLES20.glDeleteShader(shader);
    shader = 0;
  }
  if (shader == 0) {
    throw new RuntimeException("Error creating shader.");
  }
  return shader;
}

/**
 * Converts a raw text file, saved as a resource, into an OpenGL ES shader.
 *
 * @param type     The type of shader we will be creating.
 * @param filename The filename of the asset file about to be turned into a shader.
 * @return The shader object handler.
 */
public static int loadGLShader(String tag, Context context, int type, String filename)
    throws IOException {
  String code = readRawTextFileFromAssets(context, filename);
  int shader = GLES20.glCreateShader(type);
  GLES20.glShaderSource(shader, code);
  GLES20.glCompileShader(shader);
  // Get the compilation status.
  final int[] compileStatus = new int[1];
  GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compileStatus, 0);
  // If the compilation failed, delete the shader.
  if (compileStatus[0] == 0) {
    Log.e(tag, "Error compiling shader: " + GLES20.glGetShaderInfoLog(shader));
    GLES20.glDeleteShader(shader);
    shader = 0;
  }
  if (shader == 0) {
    throw new RuntimeException("Error creating shader.");
  }
  return shader;
}