private int createProgram(final String vertexSource, final String fragmentSource) {
final int vertexShader = this.loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
if (vertexShader == 0) {
return 0;
}
final int pixelShader = this.loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
if (pixelShader == 0) {
return 0;
}
int program = GLES20.glCreateProgram();
if (program != 0) {
GLES20.glAttachShader(program, vertexShader);
this.checkGlError("glAttachShader");
GLES20.glAttachShader(program, pixelShader);
this.checkGlError("glAttachShader");
GLES20.glLinkProgram(program);
final int[] linkStatus = {0};
GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
if (linkStatus[0] != 1) {
Log.e("DistortionRenderer", "Could not link program: ");
Log.e("DistortionRenderer", GLES20.glGetProgramInfoLog(program));
GLES20.glDeleteProgram(program);
program = 0;
}
}
return program;
}
