private static void initShaders()
{
var fragmentShader = GetShader(gl, "shader-fs");
var vertexShader = GetShader(gl, "shader-vs");
shaderProgram = gl.CreateProgram();
gl.AttachShader(shaderProgram, vertexShader);
gl.AttachShader(shaderProgram, fragmentShader);
gl.LinkProgram(shaderProgram);
if (!gl.GetProgramParameter(shaderProgram, gl.LinkStatus))
{
throw new Exception("Could not initialize shaders");
}
gl.UseProgram(shaderProgram);
vertexPositionAttribute = gl.GetAttributeLocation(shaderProgram, "aVertexPosition");
gl.EnableVertexAttributeArray(vertexPositionAttribute);
pMatrixUniform = gl.GetUniformLocation(shaderProgram, "uPMatrix");
mvMatrixUniform = gl.GetUniformLocation(shaderProgram, "uMVMatrix");
}