func glGetInfoLog(shaderOrProgram gl.Uint, isShader bool) string {
var l = gl.Sizei(256)
var s = gl.GLStringAlloc(l)
defer gl.GLStringFree(s)
if isShader {
gl.GetShaderInfoLog(shaderOrProgram, l, nil, s)
} else {
gl.GetProgramInfoLog(shaderOrProgram, l, nil, s)
}
return gl.GoString(s)
}
func ShaderInfoLog(shaderOrProgram gl.Uint, isShader bool) string {
var l = gl.Sizei(256)
var s = gl.GLStringAlloc(l)
defer gl.GLStringFree(s)
if isShader {
gl.GetShaderInfoLog(shaderOrProgram, l, nil, s)
} else {
gl.GetProgramInfoLog(shaderOrProgram, l, nil, s)
}
PanicIfErrors("ShaderInfoLog(s=%v)", isShader)
return gl.GoString(s)
}
func CreateProgram(shaders []g.Uint) g.Uint {
p := g.CreateProgram()
for _, v := range shaders {
g.AttachShader(p, v)
}
g.LinkProgram(p)
var status g.Int
g.GetProgramiv(p, g.LINK_STATUS, &status)
if status == g.FALSE {
var length g.Int
g.GetProgramiv(p, g.INFO_LOG_LENGTH, &length)
log.Println(length)
logStr := g.GLStringAlloc(g.Sizei(length + 1))
g.GetProgramInfoLog(p, g.Sizei(length), nil, logStr)
log.Println(g.GoString(logStr))
}
return p
}
// Loads a shader from a string
func LoadShader(typ g.Enum, s string) g.Uint {
shader := g.CreateShader(typ)
cst := g.GLString(s)
defer g.GLStringFree(cst)
g.ShaderSource(shader, 1, &cst, nil)
g.CompileShader(shader)
var status g.Int
g.GetShaderiv(shader, g.COMPILE_STATUS, &status)
if status == g.FALSE {
var length g.Int
g.GetShaderiv(shader, g.INFO_LOG_LENGTH, &length)
log.Println(int(length))
logStr := g.GLStringAlloc(g.Sizei(length + 1))
// TODO: defer
g.GetShaderInfoLog(shader, g.Sizei(length), nil, logStr)
log.Println(g.GoString(logStr))
}
return shader
}