func compile(source string, ty int) gl.Shader {
shader := gl.CreateShader(gl.Enum(ty))
gl.ShaderSource(shader, source)
gl.CompileShader(shader)
if gl.GetShaderi(shader, gl.COMPILE_STATUS) != gl.TRUE {
panic(gl.GetShaderInfoLog(shader))
}
checkError()
return shader
}
func loadShader(shaderType gl.Enum, src string) (gl.Shader, error) {
shader := gl.CreateShader(shaderType)
if !shader.Valid() {
return gl.Shader{}, fmt.Errorf("glutil: could not create shader (type %v)", shaderType)
}
gl.ShaderSource(shader, src)
gl.CompileShader(shader)
if gl.GetShaderi(shader, gl.COMPILE_STATUS) == 0 {
defer gl.DeleteShader(shader)
return gl.Shader{}, fmt.Errorf("shader compile: %s", gl.GetShaderInfoLog(shader))
}
return shader, nil
}
func dumpShaderError(shader gl.Shader, name, typeName string) error {
str := gl.GetShaderInfoLog(shader)
msg := fmt.Sprintf("Shader %s/%s error:\n%s\n", name, typeName, str)
dumpLog(msg)
return errors.New(msg)
}