func (ms *ManaSource) Draw(local *LocalData, zoom float64, dx float64, dy float64) {
if local.nodeTextureData == nil {
// gl.Enable(gl.TEXTURE_2D)
local.nodeTextureData = make([]byte, ms.options.NumNodeRows*ms.options.NumNodeCols*3)
gl.GenTextures(1, &local.nodeTextureId)
gl.BindTexture(gl.TEXTURE_2D, local.nodeTextureId)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.RGB,
gl.Sizei(ms.options.NumNodeRows),
gl.Sizei(ms.options.NumNodeCols),
0,
gl.RGB,
gl.UNSIGNED_BYTE,
gl.Pointer(&local.nodeTextureData[0]))
}
for i := range ms.rawNodes {
for c := 0; c < 3; c++ {
color_frac := ms.rawNodes[i].Mana[c] * 1.0 / ms.options.NodeMagnitude
color_range := float64(ms.options.MaxNodeBrightness - ms.options.MinNodeBrightness)
local.nodeTextureData[i*3+c] = byte(
color_frac*color_range + float64(ms.options.MinNodeBrightness))
}
}
gl.Enable(gl.TEXTURE_2D)
//gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, local.nodeTextureId)
gl.TexSubImage2D(
gl.TEXTURE_2D,
0,
0,
0,
gl.Sizei(ms.options.NumNodeRows),
gl.Sizei(ms.options.NumNodeCols),
gl.RGB,
gl.UNSIGNED_BYTE,
gl.Pointer(&local.nodeTextureData[0]))
base.EnableShader("nodes")
base.SetUniformI("nodes", "width", ms.options.NumNodeRows*3)
base.SetUniformI("nodes", "height", ms.options.NumNodeCols*3)
base.SetUniformI("nodes", "drains", 1)
base.SetUniformI("nodes", "tex0", 0)
base.SetUniformI("nodes", "tex1", 1)
base.SetUniformF("nodes", "zoom", float32(zoom))
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, local.nodeTextureId)
// I have no idea why this value for move works, but it does. So, hooray.
move := (dx - dy) / 2
texture.RenderAdvanced(move, -move, dy, dx, 3.1415926535/2, true)
base.EnableShader("")
gl.Disable(gl.TEXTURE_2D)
}
func texinit(id int) {
gl.BindTexture(gl.TEXTURE_2D, gl.Uint(id))
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
}
func createTexture(r io.Reader) (textureId gl.Uint, err error) {
img, err := png.Decode(r)
if err != nil {
return 0, err
}
rgbaImg, ok := img.(*image.NRGBA)
if !ok {
return 0, errors.New("texture must be an NRGBA image")
}
gl.GenTextures(1, &textureId)
gl.BindTexture(gl.TEXTURE_2D, textureId)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
// flip image: first pixel is lower left corner
imgWidth, imgHeight := img.Bounds().Dx(), img.Bounds().Dy()
data := make([]byte, imgWidth*imgHeight*4)
lineLen := imgWidth * 4
dest := len(data) - lineLen
for src := 0; src < len(rgbaImg.Pix); src += rgbaImg.Stride {
copy(data[dest:dest+lineLen], rgbaImg.Pix[src:src+rgbaImg.Stride])
dest -= lineLen
}
gl.TexImage2D(gl.TEXTURE_2D, 0, 4, gl.Sizei(imgWidth), gl.Sizei(imgHeight), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Pointer(&data[0]))
return textureId, nil
}
func makeErrorTexture() {
gl.Enable(gl.TEXTURE_2D)
gl.GenTextures(1, (*gl.Uint)(&error_texture))
gl.BindTexture(gl.TEXTURE_2D, error_texture)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
pink := []byte{255, 0, 255, 255}
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.BYTE, gl.Pointer(&pink[0]))
}
func (m *Model) initTexture() {
//file, err := os.Open("model/test.png")
file, err := os.Open("model/ceil.png")
if err != nil {
log.Fatal(err)
}
defer file.Close()
img, _, err := image.Decode(file)
if err != nil {
log.Fatal(err)
}
rgbaImg, ok := img.(*image.NRGBA)
if !ok {
//return 0, errors.New("texture must be an NRGBA image")
log.Fatal("image is not rgba")
}
gl.GenTextures(1, &m.texture_id)
gl.BindTexture(gl.TEXTURE_2D, m.texture_id)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
// flip image: first pixel is lower left corner
img_width, img_height := img.Bounds().Dx(), img.Bounds().Dy()
data := make([]byte, img_width*img_height*4)
line_len := img_width * 4
dest := len(data) - line_len
for src := 0; src < len(rgbaImg.Pix); src += rgbaImg.Stride {
copy(data[dest:dest+line_len], rgbaImg.Pix[src:src+rgbaImg.Stride])
dest -= line_len
}
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.RGBA, //4,
gl.Sizei(img_width),
gl.Sizei(img_height),
0,
gl.RGBA,
gl.UNSIGNED_BYTE,
gl.Pointer(&data[0]))
}
func (m *Manager) LoadSprite(path string) (*Sprite, error) {
// We can't run this during an init() function because it will get queued to
// run before the opengl context is created, so we just check here and run
// it if we haven't run it before.
gen_tex_once.Do(func() {
render.Queue(func() {
gl.Enable(gl.TEXTURE_2D)
gl.GenTextures(1, &error_texture)
gl.BindTexture(gl.TEXTURE_2D, error_texture)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
pink := []byte{255, 0, 255, 255}
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.RGBA,
1,
1,
0,
gl.RGBA,
gl.UNSIGNED_INT,
gl.Pointer(&pink[0]))
})
})
path = filepath.Clean(path)
err := m.loadSharedSprite(path)
if err != nil {
return nil, err
}
var s Sprite
m.mutex.Lock()
s.shared = m.shared[path]
m.mutex.Unlock()
s.anim_node = s.shared.anim_start
s.state_node = s.shared.state_start
return &s, nil
}
func (s *sheet) makeTexture(pixer <-chan []byte) {
gl.Enable(gl.TEXTURE_2D)
gl.GenTextures(1, &s.texture)
gl.BindTexture(gl.TEXTURE_2D, s.texture)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
data := <-pixer
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.RGBA,
gl.Sizei(s.dx),
gl.Sizei(s.dy),
0,
gl.RGBA,
gl.UNSIGNED_INT,
gl.Pointer(&data[0]))
memory.FreeBlock(data)
}
// Sets up anything that wouldn't have been loaded from disk, including
// all opengl data, and sets up finalizers for that data.
func (d *Dictionary) setupGlStuff() {
d.dlists = make(map[string]uint32)
d.strs = make(map[string]strBuffer)
d.pars = make(map[string]strBuffer)
// TODO: This finalizer is untested
runtime.SetFinalizer(d, func(d *Dictionary) {
render.Queue(func() {
for _, v := range d.dlists {
gl.DeleteLists(gl.Uint(v), 1)
}
})
})
render.Queue(func() {
gl.Enable(gl.TEXTURE_2D)
gl.GenTextures(1, (*gl.Uint)(&d.texture))
gl.BindTexture(gl.TEXTURE_2D, gl.Uint(d.texture))
gl.PixelStorei(gl.UNPACK_ALIGNMENT, 1)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.ALPHA,
gl.Sizei(d.data.Dx),
gl.Sizei(d.data.Dy),
0,
gl.ALPHA,
gl.UNSIGNED_BYTE,
gl.Pointer(&d.data.Pix[0]))
gl.Disable(gl.TEXTURE_2D)
})
}
func handleLoadRequest(req loadRequest) {
f, _ := os.Open(req.path)
im, _, err := image.Decode(f)
f.Close()
if err != nil {
return
}
gray := true
dx := im.Bounds().Dx()
dy := im.Bounds().Dy()
for i := 0; i < dx; i++ {
for j := 0; j < dy; j++ {
r, g, b, _ := im.At(i, j).RGBA()
if r != g || g != b {
gray = false
break
}
}
if !gray {
break
}
}
var canvas draw.Image
var pix []byte
if gray {
ga := NewGrayAlpha(im.Bounds())
pix = ga.Pix
canvas = ga
} else {
pix = memory.GetBlock(4 * req.data.dx * req.data.dy)
canvas = &image.RGBA{pix, 4 * req.data.dx, im.Bounds()}
}
draw.Draw(canvas, im.Bounds(), im, image.Point{}, draw.Src)
load_mutex.Lock()
load_count += len(pix)
manual_unlock := false
// This prevents us from trying to send too much to opengl in a single
// frame. If we go over the threshold then we hold the lock until we're
// done sending data to opengl, then other requests will be free to
// queue up and they will run on the next frame.
if load_count < load_threshold {
load_mutex.Unlock()
} else {
manual_unlock = true
}
render.Queue(func() {
{
gl.Enable(gl.TEXTURE_2D)
gl.GenTextures(1, (*gl.Uint)(&req.data.texture))
gl.BindTexture(gl.TEXTURE_2D, req.data.texture)
gl.PixelStorei(gl.UNPACK_ALIGNMENT, 1)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
}
if gray {
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.LUMINANCE_ALPHA,
gl.Sizei(req.data.dx),
gl.Sizei(req.data.dy),
0,
gl.LUMINANCE_ALPHA,
gl.BYTE,
gl.Pointer(&pix[0]))
} else {
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.RGBA,
gl.Sizei(req.data.dx),
gl.Sizei(req.data.dy),
0,
gl.RGBA,
gl.UNSIGNED_BYTE,
gl.Pointer(&pix[0]))
// gl.TexImage2D(target, level, internalformat, width, height, border, format, type_, pixels)
// glu.Build2DMipmaps(gl.TEXTURE_2D, gl.RGBA, req.data.dx, req.data.dy, gl.RGBA, pix)
}
memory.FreeBlock(pix)
if manual_unlock {
load_count = 0
load_mutex.Unlock()
}
})
}
func (ms *ManaSource) Draw(gw *GameWindow, dx float64, dy float64) {
if gw.nodeTextureData == nil {
// gl.Enable(gl.TEXTURE_2D)
gw.nodeTextureData = make([]byte, ms.options.NumNodeRows*ms.options.NumNodeCols*3)
gl.GenTextures(1, &gw.nodeTextureId)
gl.BindTexture(gl.TEXTURE_2D, gw.nodeTextureId)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
gl.TexImage2D(
gl.TEXTURE_2D,
0,
gl.RGB,
gl.Sizei(ms.options.NumNodeCols),
gl.Sizei(ms.options.NumNodeRows),
0,
gl.RGB,
gl.UNSIGNED_BYTE,
gl.Pointer(&gw.nodeTextureData[0]))
// gl.ActiveTexture(gl.TEXTURE1)
gl.GenTextures(1, &gw.nodeWarpingTexture)
gl.BindTexture(gl.TEXTURE_1D, gw.nodeWarpingTexture)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.TexParameterf(gl.TEXTURE_1D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_1D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameterf(gl.TEXTURE_1D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameterf(gl.TEXTURE_1D, gl.TEXTURE_WRAP_T, gl.REPEAT)
gw.nodeWarpingData = make([]byte, 4*10)
gl.TexImage1D(
gl.TEXTURE_1D,
0,
gl.RGBA,
gl.Sizei(len(gw.nodeWarpingData)/4),
0,
gl.RGBA,
gl.UNSIGNED_BYTE,
gl.Pointer(&gw.nodeWarpingData[0]))
}
for x := range ms.nodes {
for y, node := range ms.nodes[x] {
pos := 3 * (y*ms.options.NumNodeCols + x)
for c := 0; c < 3; c++ {
color_frac := node.Mana[c] * 1.0 / ms.options.NodeMagnitude
color_range := float64(ms.options.MaxNodeBrightness - ms.options.MinNodeBrightness)
gw.nodeTextureData[pos+c] = byte(
color_frac*color_range + float64(ms.options.MinNodeBrightness))
}
}
}
gl.Enable(gl.TEXTURE_1D)
gl.Enable(gl.TEXTURE_2D)
//gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, gw.nodeTextureId)
gl.TexSubImage2D(
gl.TEXTURE_2D,
0,
0,
0,
gl.Sizei(ms.options.NumNodeCols),
gl.Sizei(ms.options.NumNodeRows),
gl.RGB,
gl.UNSIGNED_BYTE,
gl.Pointer(&gw.nodeTextureData[0]))
gl.ActiveTexture(gl.TEXTURE1)
for i, ent := range gw.game.Ents {
p := ent.Pos()
gw.nodeWarpingData[3*i+0] = byte(p.X / float64(gw.game.Dx) * 255)
gw.nodeWarpingData[3*i+1] = -byte(p.Y / float64(gw.game.Dy) * 255)
gw.nodeWarpingData[3*i+2] = 255
}
gl.TexImage1D(
gl.TEXTURE_1D,
0,
gl.RGBA,
gl.Sizei(len(gw.nodeWarpingData)/4),
0,
gl.RGBA,
gl.UNSIGNED_BYTE,
gl.Pointer(&gw.nodeWarpingData[0]))
base.EnableShader("nodes")
base.SetUniformI("nodes", "width", ms.options.NumNodeCols)
base.SetUniformI("nodes", "height", ms.options.NumNodeRows)
base.SetUniformI("nodes", "drains", 1)
base.SetUniformI("nodes", "tex0", 0)
base.SetUniformI("nodes", "tex1", 1)
gl.ActiveTexture(gl.TEXTURE1)
gl.BindTexture(gl.TEXTURE_1D, gw.nodeWarpingTexture)
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, gw.nodeTextureId)
texture.Render(0, dy, dx, -dy)
base.EnableShader("")
gl.Disable(gl.TEXTURE_2D)
gl.Disable(gl.TEXTURE_1D)
}