func GetShaderInfoLog(shader uint32) string {
var logSize int32 = 0
gl.GetShaderiv(shader, gl.INFO_LOG_LENGTH, &logSize)
var infoLog []uint8 = make([]uint8, logSize)
gl.GetShaderInfoLog(shader, logSize, &logSize, &infoLog[0])
return gl.GoStr(&infoLog[0])
}
func (self *ShaderInfo) CompileShader() (uint32, error) {
content, err := ioutil.ReadFile(self.Path)
if err != nil {
return 0, err
}
contentString := bytes.NewBuffer(content).String()
glContentString := gl.Str(contentString + "\x00")
shader := gl.CreateShader(self.ShaderType)
gl.ShaderSource(shader, 1, &glContentString, nil)
gl.CompileShader(shader)
var status int32
gl.GetShaderiv(shader, gl.COMPILE_STATUS, &status)
if status == gl.FALSE {
var logLength int32
gl.GetShaderiv(shader, gl.INFO_LOG_LENGTH, &logLength)
log := strings.Repeat("\x00", int(logLength+1))
gl.GetShaderInfoLog(shader, logLength, nil, gl.Str(log))
return 0, fmt.Errorf("failed to compile %v: %v", contentString, log)
}
return shader, nil
}
func compileShader(source string, shaderType uint32) (uint32, error) {
shader := gl.CreateShader(shaderType)
csource := gl.Str(source)
gl.ShaderSource(shader, 1, &csource, nil)
gl.CompileShader(shader)
var status int32
gl.GetShaderiv(shader, gl.COMPILE_STATUS, &status)
if status == gl.FALSE {
var logLength int32
gl.GetShaderiv(shader, gl.INFO_LOG_LENGTH, &logLength)
log := strings.Repeat("\x00", int(logLength+1))
gl.GetShaderInfoLog(shader, logLength, nil, gl.Str(log))
return 0, fmt.Errorf("failed to compile %v: %v", source, log)
}
return shader, nil
}