Golang gl.TexImage2D函数代码示例

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本文整理汇总了Golang中github.com/go-gl/gl/v2/1/gl.TexImage2D函数的典型用法代码示例。如果您正苦于以下问题：Golang TexImage2D函数的具体用法？Golang TexImage2D怎么用？Golang TexImage2D使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了TexImage2D函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TexImage2D

// TexImage2D writes a 2D texture image.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexImage2D.xhtml
func TexImage2D(target Enum, level int, width, height int, format Enum, ty Enum, data []byte) {
	p := unsafe.Pointer(nil)
	if len(data) > 0 {
		p = gl.Ptr(&data[0])
	}
	gl.TexImage2D(uint32(target), int32(level), int32(format), int32(width), int32(height), 0, uint32(format), uint32(ty), p)
}

开发者ID:shibukawa，项目名称:gl，代码行数:10，代码来源:gl_opengl.go

示例2: NewTexture

func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (Texture, error) {
	var texture Texture
	if err := c.runOnContextThread(func() error {
		var t uint32
		gl.GenTextures(1, &t)
		// TODO: Use gl.IsTexture
		if t <= 0 {
			return errors.New("opengl: creating texture failed")
		}
		gl.PixelStorei(gl.UNPACK_ALIGNMENT, 4)
		texture = Texture(t)
		return nil
	}); err != nil {
		return 0, err
	}
	if err := c.BindTexture(texture); err != nil {
		return 0, err
	}
	if err := c.runOnContextThread(func() error {
		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, int32(filter))
		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, int32(filter))

		var p interface{}
		if pixels != nil {
			p = pixels
		}
		gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, int32(width), int32(height), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Ptr(p))
		return nil
	}); err != nil {
		return 0, err
	}
	return texture, nil
}

开发者ID:hajimehoshi，项目名称:ebiten，代码行数:33，代码来源:context_desktop.go

示例3: newChipset

func newChipset(file string, tilesize int) chipset {
	imgFile, err := os.Open(file)
	if err != nil {
		log.Fatalf("texture %q not found on disk: %v\n", file, err)
	}
	img, _, err := image.Decode(imgFile)
	if err != nil {
		panic(err)
	}

	rgba := image.NewRGBA(img.Bounds())
	draw.Draw(rgba, rgba.Bounds(), img, image.ZP, draw.Src)

	var texture uint32
	gl.Enable(gl.TEXTURE_2D)
	gl.GenTextures(1, &texture)
	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
	gl.TexImage2D(
		gl.TEXTURE_2D,
		0, gl.RGBA,
		int32(rgba.Rect.Size().X),
		int32(rgba.Rect.Size().Y),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(rgba.Pix))

	return chipset{width: rgba.Bounds().Dx(), height: rgba.Bounds().Dy(), handle: texture, tilesize: tilesize}
}

开发者ID:manyminds，项目名称:tmx，代码行数:33，代码来源:opengl.go

示例4: LataaKuvat

func LataaKuvat() {
	file, err := os.Open("tiles.png")
	if err != nil {
		panic("En saa avattua kuvatiedostoa: " + err.Error())
	}

	kuva, _, err := image.Decode(file)
	if err != nil {
		panic("Kuva on rikki: " + err.Error())
	}

	var texture uint32
	gl.GenTextures(1, &texture)

	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexImage2D(gl.TEXTURE_2D, 0, 4,
		int32(kuva.Bounds().Dx()), int32(kuva.Bounds().Dy()), 0,
		gl.RGBA, gl.UNSIGNED_BYTE,
		unsafe.Pointer(&kuva.(*image.RGBA).Pix[0]),
	)

	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)

	gl.Enable(gl.TEXTURE_2D)
}

开发者ID:joonazan，项目名称:go-opas，代码行数:26，代码来源:piirto.go

示例5: loadTexture

func loadTexture(fileName string) (uint32, error) {
	imgFile, err := os.Open("./res/textures/" + fileName)
	if err != nil {
		return 0, err
	}

	imgCfg, _, err := image.DecodeConfig(imgFile)
	if err != nil {
		return 0, err
	}
	_, err = imgFile.Seek(0, 0)
	if err != nil {
		return 0, err
	}

	w, h := int32(imgCfg.Width), int32(imgCfg.Height)

	img, _, err := image.Decode(imgFile)
	if err != nil {
		return 0, err
	}

	buffer := make([]byte, w*h*4)
	index := 0
	for y := 0; y < int(h); y++ {
		for x := 0; x < int(w); x++ {
			pixel := img.At(x, y).(color.NRGBA)
			buffer[index] = pixel.R
			buffer[index+1] = pixel.G
			buffer[index+2] = pixel.B
			buffer[index+3] = pixel.A

			index += 4
		}
	}

	var texture uint32

	gl.GenTextures(1, &texture)
	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
	gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
	gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)

	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA8,
		w,
		h,
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(buffer))

	return texture, nil
}

开发者ID:gdm85，项目名称:wolfengo，代码行数:58，代码来源:texture.go

示例6: createHudTexture

func (ctx *DrawContext) createHudTexture(o *orrery.Orrery, frametime time.Duration) (uint32, [2]int, error) {
	lines := []string{}

	if o.Paused {
		lines = append(lines, "PAUSED")
	}

	if ctx.verbose {
		lines = append(lines, []string{
			"WASD: Move, 1: Toggle wireframe, H: Toggle HUD verbosity, Q: Quit",
			"Mouse Wheel: Move fast, Mouse Btn #1: Spawn particle, V: Spawn 10 particles",
			"Space: Reset camera, P: Toggle pause",
		}...)
	}

	lines = append(lines, []string{
		fmt.Sprintf(` α: %0.2f θ: %0.2f`, ctx.cam.alpha, ctx.cam.theta),
		fmt.Sprintf(` x: %0.2f y: %0.2f z: %0.2f`, ctx.cam.Pos.X, ctx.cam.Pos.Y, ctx.cam.Pos.Z),
		fmt.Sprintf(` Last frame time: %s`, frametime),
	}...)

	if ctx.verbose {
		particles := o.Particles()
		lines = append(lines, fmt.Sprintf(`#P: %d`, len(particles)))
		for i, p := range particles {
			p.L.Lock()
			l := fmt.Sprintf(` π %d: %s`, i, p)
			p.L.Unlock()
			lines = append(lines, l)
		}
	}

	var txt uint32
	gl.GenTextures(1, &txt)

	gl.BindTexture(gl.TEXTURE_2D, txt)

	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 0)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, 0)

	bg := color.RGBA{0, 0, 0, 0}
	fg := color.RGBA{0, 255, 255, 255}
	img, err := ctx.txt.RenderMultiline(lines, 12.5, bg, fg)
	if err != nil {
		return 0, [2]int{0, 0}, err
	}
	v := reflect.ValueOf(img.Pix)
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA,
		int32(img.Bounds().Dx()), int32(img.Bounds().Dy()),
		0, gl.RGBA, gl.UNSIGNED_BYTE, unsafe.Pointer(v.Index(0).UnsafeAddr()))

	return txt, [2]int{img.Bounds().Dx(), img.Bounds().Dy()}, nil
}

开发者ID:farhaven，项目名称:universe，代码行数:55，代码来源:drawing.go

示例7: main

func main() {
	runtime.LockOSThread()

	if err := glfw.Init(); err != nil {
		panic(err)
	}
	defer glfw.Terminate()

	window, err := glfw.CreateWindow(800, 600, "fontstash example", nil, nil)
	if err != nil {
		panic(err)
	}

	window.MakeContextCurrent()
	glfw.SwapInterval(1)
	gl.Init()

	data, err := ioutil.ReadFile(filepath.Join("..", "ClearSans-Regular.ttf"))
	if err != nil {
		panic(err)
	}

	gl.Enable(gl.TEXTURE_2D)

	tmpBitmap := make([]byte, 512*512)
	cdata, err, _, tmpBitmap := truetype.BakeFontBitmap(data, 0, 32, tmpBitmap, 512, 512, 32, 96)
	var ftex uint32
	gl.GenTextures(1, &ftex)
	gl.BindTexture(gl.TEXTURE_2D, ftex)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 512, 512, 0,
		gl.ALPHA, gl.UNSIGNED_BYTE, unsafe.Pointer(&tmpBitmap[0]))

	gl.ClearColor(0.3, 0.3, 0.32, 1.)

	for !window.ShouldClose() {
		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
		gl.MatrixMode(gl.PROJECTION)
		gl.LoadIdentity()
		gl.Ortho(0, 800, 600, 0, 0, 1)
		gl.MatrixMode(gl.MODELVIEW)
		gl.LoadIdentity()
		gl.Disable(gl.DEPTH_TEST)
		gl.Color4ub(255, 255, 255, 255)
		gl.Enable(gl.BLEND)
		gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)

		my_print(100, 100, "The quick brown fox jumps over the fence", ftex, cdata)

		window.SwapBuffers()
		glfw.PollEvents()
	}
}

开发者ID:shibukawa，项目名称:fontstash.go，代码行数:54，代码来源:truetype.go

示例8: TexImage2D

func (*backend) TexImage2D(
	target gg.Enum, level int, internalFormat gg.Enum,
	width, height, border int,
	format, typ gg.Enum,
	data interface{},
) {
	gl.TexImage2D(
		gl.TEXTURE_2D, int32(level), gl.RGBA,
		int32(width), int32(height), int32(border),
		uint32(format), uint32(typ),
		gl.Ptr(data),
	)
}

开发者ID:dmac，项目名称:gg，代码行数:13，代码来源:gg.go

示例9: NewTexture

func NewTexture() *Texture {
	texture := createTexture()
	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexImage2D(
		gl.TEXTURE_2D, 0, gl.RGBA,
		textureSize, textureSize,
		0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
	gl.BindTexture(gl.TEXTURE_2D, 0)
	t := Texture{}
	t.texture = texture
	t.lookup = make(map[string]int)
	t.ch = make(chan string, 1024)
	return &t
}

开发者ID:cherrybob，项目名称:nes，代码行数:14，代码来源:texture.go

示例10: LoadTexture

func LoadTexture(path string) {
	//fmt.Printf("Trying to load texture %q: ", path)

	// Open the file
	file, err := os.Open(path)
	if err != nil {
		fmt.Println(os.Getwd())
		log.Fatal(err)
	}
	defer file.Close()

	// Decode the image
	img, _, err := image.Decode(file)
	if err != nil {
		log.Fatal(err)
	}

	bounds := img.Bounds()
	//fmt.Printf("Loaded %vx%v texture.\n", bounds.Dx(), bounds.Dy())

	var format int
	var pixPointer *uint8
	switch img := img.(type) {
	case *image.RGBA:
		format = gl.RGBA
		pixPointer = &img.Pix[0]
	case *image.NRGBA:
		format = gl.RGBA
		pixPointer = &img.Pix[0]
	case *image.Gray:
		format = gl.ALPHA
		pixPointer = &img.Pix[0]
	default:
		log.Fatalf("LoadTexture: Unsupported type %T.\n", img)
	}

	var texture uint32
	gl.GenTextures(1, &texture)
	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexParameteri(gl.TEXTURE_2D, gl.GENERATE_MIPMAP, gl.TRUE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_LOD_BIAS, -0.5)
	gl.TexImage2D(gl.TEXTURE_2D, 0, int32(format), int32(bounds.Dx()), int32(bounds.Dy()), 0, uint32(format), gl.UNSIGNED_BYTE, gl.Ptr(pixPointer))
	CheckGLError()
}

开发者ID:rexposadas，项目名称:Conception-go，代码行数:46，代码来源:text.go

示例11: newTexture

func newTexture(rgba image.RGBA) *uint32 {
	var texture1 uint32
	gl.Enable(gl.TEXTURE_2D)
	gl.GenTextures(1, &texture1)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA,
		int32(rgba.Rect.Size().X),
		int32(rgba.Rect.Size().Y),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(rgba.Pix))

	return &texture1

}

开发者ID:lordwelch，项目名称:PresentationApp，代码行数:19，代码来源:glfw.go

示例12: draw

func (atlas *FontAtlas) draw(rendered *image.RGBA, b Bounds) {
	var texture uint32
	gl.Enable(gl.TEXTURE_2D)
	gl.GenTextures(1, &texture)
	gl.BindTexture(gl.TEXTURE_2D, texture)

	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)

	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA,
		int32(rendered.Bounds().Dx()),
		int32(rendered.Bounds().Dy()),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(rendered.Pix))

	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)

	gl.Begin(gl.QUADS)
	{
		gl.TexCoord2f(0, 0)
		gl.Vertex2f(b.Min.X, b.Min.Y)
		gl.TexCoord2f(1, 0)
		gl.Vertex2f(b.Max.X, b.Min.Y)
		gl.TexCoord2f(1, 1)
		gl.Vertex2f(b.Max.X, b.Max.Y)
		gl.TexCoord2f(0, 1)
		gl.Vertex2f(b.Min.X, b.Max.Y)
	}
	gl.End()

	gl.Disable(gl.BLEND)

	gl.DeleteTextures(1, &texture)
	gl.Disable(gl.TEXTURE_2D)
}

开发者ID:egonelbre，项目名称:spector，代码行数:43，代码来源:fontatlas_slow.go

示例13: NewGLImageFromImage

func NewGLImageFromImage(img image.Image) (*glImage, error) {
	var rgba *image.RGBA
	if asRGBA, ok := img.(*image.RGBA); ok {
		rgba = asRGBA
	} else {
		rgba = image.NewRGBA(img.Bounds())
		if rgba.Stride != rgba.Rect.Size().X*4 {
			return nil, errors.New("unsupported stride")
		}
		draw.Draw(rgba, rgba.Bounds(), img, image.Point{0, 0}, draw.Src)
	}

	var tex uint32
	gl.Enable(gl.TEXTURE_2D)
	gl.GenTextures(1, &tex)
	gl.BindTexture(gl.TEXTURE_2D, tex)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA,
		int32(rgba.Bounds().Dx()),
		int32(rgba.Bounds().Dy()),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(rgba.Pix),
	)

	return &glImage{
		tex,
		img.Bounds().Dx(),
		img.Bounds().Dy(),
		0.0,
		0.0,
		1.0,
		1.0,
	}, nil
}

开发者ID:gonutz，项目名称:settlers，代码行数:42，代码来源:gl_image.go

示例14: NewTexture

func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (Texture, error) {
	var t uint32
	gl.GenTextures(1, &t)
	if t < 0 {
		return 0, errors.New("glGenTexture failed")
	}
	gl.PixelStorei(gl.UNPACK_ALIGNMENT, 4)
	gl.BindTexture(gl.TEXTURE_2D, t)

	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, int32(filter))
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, int32(filter))

	var p interface{}
	if pixels != nil {
		p = pixels
	}
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, int32(width), int32(height), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Ptr(p))

	return Texture(t), nil
}

开发者ID:DrJosh9000，项目名称:ebiten，代码行数:20，代码来源:context.go

示例15: TexImage2D

func (c *Context) TexImage2D(target, level, internalFormat, format, kind int, data interface{}) {
	var pix []uint8
	width := 0
	height := 0
	if data == nil {
		pix = nil
	} else {
		switch img := data.(type) {
		case *image.NRGBA:
			width = img.Bounds().Dx()
			height = img.Bounds().Dy()
			pix = img.Pix
		case *image.RGBA:
			width = img.Bounds().Dx()
			height = img.Bounds().Dy()
			pix = img.Pix
		default:
			panic(fmt.Errorf("Image type unsupported: %T", img))
		}
	}
	gl.TexImage2D(uint32(target), int32(level), int32(internalFormat), int32(width), int32(height), int32(0), uint32(format), uint32(kind), gl.Ptr(pix))
}

开发者ID:EtienneBruines，项目名称:webgl，代码行数:22，代码来源:webgl_gl2.go

示例16: NewTexture

func NewTexture(img *image.RGBA, opts ...TextureOption) (*Texture, error) {
	if img.Stride != img.Rect.Size().X*4 {
		return nil, fmt.Errorf("unsupported stride in texture image")
	}
	opt := textureOption{
		filterMin: LINEAR,
		filterMag: LINEAR,
		wrap_s:    REPEAT,
		wrap_t:    REPEAT,
	}
	for _, o := range opts {
		o(&opt)
	}

	var id uint32
	gl.GenTextures(1, &id)
	gl.ActiveTexture(gl.TEXTURE0)
	gl.BindTexture(gl.TEXTURE_2D, id)
	defer gl.BindTexture(gl.TEXTURE_2D, 0)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, int32(opt.filterMin))
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, int32(opt.filterMag))
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, int32(opt.wrap_s))
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, int32(opt.wrap_t))
	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA,
		int32(img.Rect.Size().X),
		int32(img.Rect.Size().Y),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(img.Pix))
	return &Texture{
		id:   id,
		size: img.Rect.Size(),
	}, nil
}

开发者ID:PieterD，项目名称:crap，代码行数:38，代码来源:texture.go

示例17: upload

func (atlas *FontAtlas) upload() {
	if !atlas.Dirty {
		return
	}
	atlas.Dirty = false

	gl.Enable(gl.TEXTURE_2D)

	if atlas.Texture != 0 {
		gl.DeleteTextures(1, &atlas.Texture)
		atlas.Texture = 0
	}

	gl.GenTextures(1, &atlas.Texture)
	gl.BindTexture(gl.TEXTURE_2D, atlas.Texture)

	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)

	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA,
		int32(atlas.Image.Rect.Size().X),
		int32(atlas.Image.Rect.Size().Y),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(atlas.Image.Pix))

	if err := gl.GetError(); err != 0 {
		log.Println(err)
	}

	gl.Disable(gl.TEXTURE_2D)
}

开发者ID:egonelbre，项目名称:spector，代码行数:38，代码来源:fontatlas.go

示例18: newTexture

func newTexture(file string) uint32 {
	imgFile, err := os.Open(file)
	if err != nil {
		panic(err)
	}
	img, _, err := image.Decode(imgFile)
	if err != nil {
		panic(err)
	}

	rgba := image.NewRGBA(img.Bounds())
	if rgba.Stride != rgba.Rect.Size().X*4 {
		panic("unsupported stride")
	}
	draw.Draw(rgba, rgba.Bounds(), img, image.Point{0, 0}, draw.Src)

	var texture uint32
	gl.Enable(gl.TEXTURE_2D)
	gl.GenTextures(1, &texture)
	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
	gl.TexImage2D(
		gl.TEXTURE_2D,
		0,
		gl.RGBA,
		int32(rgba.Rect.Size().X),
		int32(rgba.Rect.Size().Y),
		0,
		gl.RGBA,
		gl.UNSIGNED_BYTE,
		gl.Ptr(rgba.Pix))

	return texture
}

开发者ID:Geemili，项目名称:maze-rogue，代码行数:37，代码来源:maze-rogue.go

示例19: New

func New(cachew, cacheh int) *Stash {
	stash := &Stash{}

	// Create data for clearing the textures
	stash.emptyData = make([]byte, cachew*cacheh)

	// Create first texture for the cache
	stash.tw = cachew
	stash.th = cacheh
	stash.itw = 1 / float64(cachew)
	stash.ith = 1 / float64(cacheh)
	gl.Enable(gl.TEXTURE_2D)
	stash.ttTextures = make([]*Texture, 1)
	stash.ttTextures[0] = &Texture{}
	gl.GenTextures(1, &stash.ttTextures[0].id)
	gl.BindTexture(gl.TEXTURE_2D, stash.ttTextures[0].id)
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, int32(cachew), int32(cacheh),
		0, gl.ALPHA, gl.UNSIGNED_BYTE, unsafe.Pointer(&stash.emptyData[0]))
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.Disable(gl.TEXTURE_2D)

	return stash
}

开发者ID:shibukawa，项目名称:fontstash.go，代码行数:24，代码来源:fontstash.go

示例20: GetGlyph

func (stash *Stash) GetGlyph(fnt *Font, codepoint int, isize int16) *Glyph {
	size := float64(isize) / 10

	// Find code point and size.
	h := hashint(uint(codepoint)) & (HASH_LUT_SIZE - 1)
	for i := fnt.lut[h]; i != -1; i = fnt.glyphs[i].next {
		if fnt.glyphs[i].codepoint == codepoint && (fnt.fType == BMFONT || fnt.glyphs[i].size == isize) {
			return fnt.glyphs[i]
		}
	}
	// Could not find glyph.

	// For bitmap fonts: ignore this glyph.
	if fnt.fType == BMFONT {
		return nil
	}

	// For truetype fonts: create this glyph.
	scale := fnt.font.ScaleForPixelHeight(size)
	g := fnt.font.FindGlyphIndex(codepoint)
	if g == 0 {
		// glyph not found
		return nil
	}
	advance, _ := fnt.font.GetGlyphHMetrics(g)
	x0, y0, x1, y1 := fnt.font.GetGlyphBitmapBox(g, scale, scale)
	gw := x1 - x0
	gh := y1 - y0

	// Check if glyph is larger than maximum texture size
	if gw >= stash.tw || gh >= stash.th {
		return nil
	}

	// Find texture and row where the glyph can be fit.
	rh := (int16(gh) + 7) & ^7
	var tt int
	texture := stash.ttTextures[tt]
	var br *Row
	for br == nil {
		for i := range texture.rows {
			if texture.rows[i].h == rh && int(texture.rows[i].x)+gw+1 <= stash.tw {
				br = texture.rows[i]
			}
		}

		// If no row is found, there are 3 possibilities:
		//  - add new row
		//  - try next texture
		//  - create new texture
		if br == nil {
			var py int16
			// Check that there is enough space.
			if len(texture.rows) > 0 {
				py = texture.rows[len(texture.rows)-1].y + texture.rows[len(texture.rows)-1].h + 1
				if int(py+rh) > stash.th {
					if tt < len(stash.ttTextures)-1 {
						tt++
						texture = stash.ttTextures[tt]
					} else {
						// Create new texture
						gl.Enable(gl.TEXTURE_2D)
						texture = &Texture{}
						gl.GenTextures(1, &texture.id)
						gl.BindTexture(gl.TEXTURE_2D, texture.id)
						gl.TexImage2D(gl.TEXTURE_2D, 0, gl.ALPHA,
							int32(stash.tw), int32(stash.th), 0,
							gl.ALPHA, gl.UNSIGNED_BYTE,
							unsafe.Pointer(&stash.emptyData[0]))
						gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
						gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
						gl.Disable(gl.TEXTURE_2D)
						stash.ttTextures = append(stash.ttTextures, texture)
					}
					continue
				}
			}
			// Init and add row
			br = &Row{
				x: 0,
				y: py,
				h: rh,
			}
			texture.rows = append(texture.rows, br)
		}
	}

	// Init glyph.
	glyph := &Glyph{
		codepoint: codepoint,
		size:      isize,
		texture:   texture,
		x0:        int(br.x),
		y0:        int(br.y),
		x1:        int(br.x) + gw,
		y1:        int(br.y) + gh,
		xadv:      scale * float64(advance),
		xoff:      float64(x0),
		yoff:      float64(y0),
		next:      0,
//.........这里部分代码省略.........

开发者ID:shibukawa，项目名称:fontstash.go，代码行数:101，代码来源:fontstash.go

注：本文中的github.com/go-gl/gl/v2/1/gl.TexImage2D函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。