void initGL(HtmlElement canvas)
{
try {
gl = new WebGLRenderingContext(canvas);
viewportWidth = (float)canvas.Width();
viewportHeight = (float)canvas.Height();
} catch (Exception e) {
}
if (gl == null) {
alert("Could not initialise WebGL, sorry :-(");
}
}
WebGLShader getShader(WebGLRenderingContext gl, string str, GLuint shaderType)
{
var shader = gl.createShader(shaderType);
gl.shaderSource(shader, str);
gl.compileShader(shader);
if (gl.getShaderParameter(shader, GL.COMPILE_STATUS) == null) {
alert(gl.getShaderInfoLog(shader));
return null;
}
return shader;
}
