error C:\Python27>python.exe spheretransform.py

[catafest]

C:\Python27>python.exe spheretransform.py
QOpenGLShader::compile(Vertex): ERROR: 0:24: 'gl_Vertex' : undeclared identifier
ERROR: 0:24: 'xy' :  field selection requires structure, vector, or matrix on left hand side
ERROR: 0:24: '=' :  cannot convert from 'float' to '2-component vector of float'
ERROR: 0:29: 'gl_Normal' : undeclared identifier
ERROR: 0:29: 'mix' : no matching overloaded function found
ERROR: 0:29: 'assign' :  cannot convert from 'const mediump float' to '3-component vector of float'
ERROR: 0:30: 'xyz' :  field selection requires structure, vector, or matrix on left hand side
ERROR: 0:30: 'mix' : no matching overloaded function found
ERROR: 0:30: 'assign' :  cannot convert from 'const mediump float' to '3-component vector of float'
ERROR: 0:32: 'gl_NormalMatrix' : undeclared identifier
ERROR: 0:33: 'gl_ModelViewMatrix' : undeclared identifier
ERROR: 0:42: 'gl_ModelViewProjectionMatrix' : undeclared identifier

*** Problematic Vertex shader source code ***

varying vec4 Color;

uniform vec3 LightPosition;
uniform vec3 SurfaceColor;

const float PI = 3.14159;
const float TWO_PI = PI * 2.0;

uniform float Radius;
uniform float Blend;

vec3 sphere(vec2 domain)
{
    vec3 range;
    range.x = Radius * cos(domain.y) * sin(domain.x);
    range.y = Radius * sin(domain.y) * sin(domain.x);
    range.z = Radius * cos(domain.x);
    return range;
}

void main()
{
    vec2 p0 = gl_Vertex.xy * TWO_PI;
    vec3 normal = sphere(p0);;
    vec3 r0 = Radius * normal;
    vec3 vertex = r0;

    normal = mix(gl_Normal, normal, Blend);
    vertex = mix(gl_Vertex.xyz, vertex, Blend);

    normal = normalize(gl_NormalMatrix * normal);
    vec3 position = vec3(gl_ModelViewMatrix * vec4(vertex, 1.0));

    vec3 lightVec = normalize(LightPosition - position);
    float diffuse = max(dot(lightVec, normal), 0.0);

    if (diffuse < 0.125)
         diffuse = 0.125;

    Color = vec4(SurfaceColor * diffuse, 1.0);
    gl_Position = gl_ModelViewProjectionMatrix * vec4(vertex,1.0);
}

***
QOpenGLShaderProgram::uniformLocation( LightPosition ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( SurfaceColor ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( Blend ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( Radius ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( Blend ): shader program is not linked
Traceback (most recent call last):
  File "spheretransform.py", line 78, in exposeEvent
    self.renderNow()
  File "spheretransform.py", line 63, in renderNow
    self.render(self.m_gl)
  File "spheretransform.py", line 183, in render
    gl.glBegin(gl.GL_QUADS)
AttributeError: 'QOpenGLFunctions_ES2' object has no attribute 'glBegin'
QOpenGLShaderProgram::uniformLocation( Blend ): shader program is not linked
Traceback (most recent call last):
  File "spheretransform.py", line 78, in exposeEvent
    self.renderNow()
  File "spheretransform.py", line 63, in renderNow
    self.render(self.m_gl)
  File "spheretransform.py", line 183, in render
    gl.glBegin(gl.GL_QUADS)
AttributeError: 'QOpenGLFunctions_ES2' object has no attribute 'glBegin'