func (r *Receiver) Draw(window *glfw.Window) {
// fmt.Println("render", r.SimulationTime.Elapsed)
bg := gtk.SoftBlack
gl.ClearColor(bg[0], bg[1], bg[2], bg[3])
gl.Enable(gl.DEPTH_TEST)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)
r.Shaders.UseProgram(PROGRAM_FILL)
gl.Uniform4fv(r.FillLoc.Color, 1, >k.SkyBlue[0])
gl.Uniform1f(r.FillLoc.Depth, gl.Float(r.Constants.PlayerViewFar))
r.Shaders.UseProgram(PROGRAM_SCENE)
gl.Uniform1f(r.SceneLoc.ElapsedSeconds, gl.Float(r.SimulationTime.Elapsed))
gl.Uniform1f(r.SceneLoc.Glow, 0)
gl.UniformMatrix4fv(r.SceneLoc.Projection, 1, gl.FALSE, gtk.MatArray(r.Data.Projection))
gl.UniformMatrix4fv(r.SceneLoc.Cameraview, 1, gl.FALSE, gtk.MatArray(r.Data.Cameraview))
gl.UniformMatrix4fv(r.SceneLoc.Inception, 1, gl.FALSE, gtk.MatArray(r.Data.Inception))
mv := glm.Ident4d()
gl.UniformMatrix4fv(r.SceneLoc.Portalview, 1, gl.FALSE, gtk.MatArray(mv))
gl.UniformMatrix4fv(r.SceneLoc.Worldview, 1, gl.FALSE, gtk.MatArray(mv))
// gtk.AttachTexture(r.SceneLoc.Tex0, gl.TEXTURE0, gl.TEXTURE_2D, r.Data.Tex0)
// gtk.AttachTexture(r.SceneLoc.Tex1, gl.TEXTURE1, gl.TEXTURE_2D, r.Data.Tex1)
gtk.PanicOnError()
r.DrawPortalScene(mv, 0, 1)
r.Invalid = false
}
func MatArray(d glm.Mat4d) *gl.Float {
n := len(d)
f := make([]gl.Float, n)
for i := 0; i < n; i++ {
f[i] = gl.Float(d[i])
}
return &f[0]
}
func ArrayPtr(data interface{}) (gl.Pointer, gl.Sizeiptr) {
var size gl.Sizeiptr
var ptr gl.Pointer
switch data := data.(type) {
case []float64:
duplicate := make([]gl.Float, len(data))
for i, v := range data {
duplicate[i] = gl.Float(v)
}
ptr, size = ArrayPtr(duplicate)
case []float32:
if len(data) == 0 {
size = 0
ptr = gl.Pointer(nil)
} else {
var v float32
size = gl.Sizeiptr(len(data) * int(unsafe.Sizeof(v)))
ptr = gl.Pointer(&data[0])
}
case []gl.Float:
if len(data) == 0 {
size = 0
ptr = gl.Pointer(nil)
} else {
var v gl.Float
size = gl.Sizeiptr(len(data) * int(unsafe.Sizeof(v)))
ptr = gl.Pointer(&data[0])
}
case []int16:
if len(data) == 0 {
size = 0
ptr = gl.Pointer(nil)
} else {
var v int16
size = gl.Sizeiptr(len(data) * int(unsafe.Sizeof(v)))
ptr = gl.Pointer(&data[0])
}
case []gl.Ushort:
if len(data) == 0 {
size = 0
ptr = gl.Pointer(nil)
} else {
var v gl.Ushort
size = gl.Sizeiptr(len(data) * int(unsafe.Sizeof(v)))
ptr = gl.Pointer(&data[0])
}
case []int:
duplicate := make([]gl.Ushort, len(data))
for i, v := range data {
duplicate[i] = gl.Ushort(v)
}
ptr, size = ArrayPtr(duplicate)
case []gl.Int:
if len(data) == 0 {
size = 0
ptr = gl.Pointer(nil)
} else {
var v gl.Int
size = gl.Sizeiptr(len(data) * int(unsafe.Sizeof(v)))
ptr = gl.Pointer(&data[0])
}
default:
panic(fmt.Sprintln("unknown data type:", reflect.TypeOf(data)))
}
return ptr, size
}