WebGL Viewport

import webgl

gl = webgl.Context("my-canvas")
gl.viewport(0, 150, 200, 150)
vs = gl.createShader(gl.VERTEX_SHADER) 
gl.shaderSource(vs, "attribute vec3 aVertexPosition; void main(void) { gl_Position = vec4(aVertexPosition, 1.0); }")
gl.compileShader(vs)
print "Vertex shader COMPILE_STATUS: " + str(gl.getShaderParameter(vs, gl.COMPILE_STATUS))
fs = gl.createShader(gl.FRAGMENT_SHADER) 
gl.shaderSource(fs, "void main(void) { gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0); }")
gl.compileShader(fs)
print "Fragment shader COMPILE_STATUS: " + str(gl.getShaderParameter(fs, gl.COMPILE_STATUS))

program = gl.createProgram()
gl.attachShader(program, vs)
gl.attachShader(program, fs)
gl.linkProgram(program)
print "Program LINK_STATUS: " + str(gl.getProgramParameter(program, gl.LINK_STATUS))
gl.useProgram(program)

triangleVertices = [-0.5,  0.5, 0.0,
                     0.0,  0.0, 0.0,
                    -0.5, -0.5, 0.0,
                     0.5,  0.5, 0.0,
                     0.0,  0.0, 0.0,
                     0.5, -0.5, 0.0]

trianglesVerticeBuffer = gl.createBuffer()
gl.bindBuffer(gl.ARRAY_BUFFER, trianglesVerticeBuffer)
gl.bufferData(gl.ARRAY_BUFFER, webgl.Float32Array(triangleVertices), gl.STATIC_DRAW)

vertexPositionAttribute = gl.getAttribLocation(program, "aVertexPosition")
gl.enableVertexAttribArray(vertexPositionAttribute)
gl.bindBuffer(gl.ARRAY_BUFFER, trianglesVerticeBuffer)
gl.vertexAttribPointer(vertexPositionAttribute, 3, gl.FLOAT, False, 0, 0)
gl.drawArrays(gl.TRIANGLES, 0, 6)