func onStart(glctx gl.Context) {
var err error
program, err = glutil.CreateProgram(glctx, vertexShader, fragmentShader)
if err != nil {
log.Printf("error creating GL program: %v", err)
return
}
for i := uint32(0); i < 5; i++ {
name, size, ty := glctx.GetActiveUniform(program, i)
log.Printf("name: %s; size: %d; ty: %s", name, size, ty)
}
buf = glctx.CreateBuffer()
glctx.BindBuffer(gl.ARRAY_BUFFER, buf)
glctx.BufferData(gl.ARRAY_BUFFER, triangleData, gl.STATIC_DRAW)
position = glctx.GetAttribLocation(program, "position")
color = glctx.GetUniformLocation(program, "color")
offset = glctx.GetUniformLocation(program, "offset")
images = glutil.NewImages(glctx)
fps = debug.NewFPS(images)
}
