示例#1
0
文件: sprite.go 项目: velovix/paunch
// Draw draws the Sprite object.
func (sprite *Sprite) Draw(frame int) error {

	gl.BindBuffer(gl.ARRAY_BUFFER, sprite.shape.vertexBuffer)
	gl.VertexAttribPointer(gl.Uint(0), 2, gl.FLOAT, gl.FALSE, 0, gl.Offset(nil, 0))
	gl.BindAttribLocation(paunchEffect.program, gl.Uint(0), gl.GLString("position"))
	gl.BindBuffer(gl.ARRAY_BUFFER, 0)

	if sprite.texcoordBuffer != 0 {
		gl.ActiveTexture(gl.TEXTURE0)

		gl.BindBuffer(gl.ARRAY_BUFFER, sprite.texcoordBuffer)
		gl.VertexAttribPointer(gl.Uint(1), 2, gl.FLOAT, gl.FALSE, 0, gl.Offset(nil, 0))
		gl.BindAttribLocation(paunchEffect.program, gl.Uint(0), gl.GLString("texcoord"))
		gl.BindBuffer(gl.ARRAY_BUFFER, 0)

		gl.BindTexture(gl.TEXTURE_2D, sprite.texture[frame])
		gl.EnableVertexAttribArray(gl.Uint(1))
	}

	gl.EnableVertexAttribArray(gl.Uint(0))
	gl.DrawArrays(gl.TRIANGLES, 0, gl.Sizei(sprite.shape.size))
	gl.DisableVertexAttribArray(gl.Uint(0))
	gl.DisableVertexAttribArray(gl.Uint(1))

	gl.BindTexture(gl.TEXTURE_2D, 0)

	return checkForErrors()
}
示例#2
0
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)
}
示例#3
0
文件: shape.go 项目: velovix/paunch
// Draw draws the Shape object.
func (shape *Shape) Draw() error {

	gl.BindBuffer(gl.ARRAY_BUFFER, shape.vertexBuffer)
	vertexAttribLoc := gl.GetAttribLocation(paunchEffect.program, gl.GLString("position"))
	gl.VertexAttribPointer(gl.Uint(vertexAttribLoc), 2, gl.FLOAT, gl.FALSE, 0, gl.Offset(nil, 0))
	gl.BindBuffer(gl.ARRAY_BUFFER, 0)

	gl.EnableVertexAttribArray(gl.Uint(vertexAttribLoc))
	gl.DrawArrays(shape.mode, 0, gl.Sizei(shape.size/2))
	gl.DisableVertexAttribArray(gl.Uint(vertexAttribLoc))
	//gl.DisableVertexAttribArray(gl.Uint(1))

	//gl.BindTexture(gl.TEXTURE_2D, 0)

	return checkForErrors()
}
示例#4
0
文件: shader.go 项目: drasich/ridley
func (s *Shader) initAttribute(name string, att *gl.Uint) {
	att_name := gl.GLString(name)
	defer gl.GLStringFree(att_name)
	att_tmp := gl.GetAttribLocation(s.program, att_name)
	if att_tmp == -1 {
		fmt.Println("Error in getting attribute ", gl.GoString(att_name))
	} else {
		*att = gl.Uint(att_tmp)
	}
}
示例#5
0
文件: sprite.go 项目: velovix/paunch
// NewSprite creates a new Sprite object using the given data, which is
// expected to be in RGBA format. If you use PNG image files, you can use the
// NewSpriteFromImage shortcut function instead.
func NewSprite(x, y, width, height float64, data []byte, clip int) (*Sprite, error) {

	verticies := []float64{
		x, y,
		x + width, y,
		x, y + height,

		x + width, y + height,
		x + width, y,
		x, y + height}

	shape, err := NewShape(gl.TRIANGLES, verticies)
	if err != nil {
		return nil, err
	}

	sprite := &Sprite{texcoordBuffer: 0, texture: nil, shape: shape}

	texCoords := []float32{
		0, 0,
		1, 0,
		0, 1,

		1, 1,
		1, 0,
		0, 1}

	gl.GenBuffers(1, &sprite.texcoordBuffer)
	gl.BindBuffer(gl.ARRAY_BUFFER, gl.Uint(sprite.texcoordBuffer))
	gl.BufferData(gl.ARRAY_BUFFER, gl.Sizeiptr(len(texCoords)*4), gl.Pointer(&texCoords[0]), gl.STREAM_DRAW)
	gl.BindBuffer(gl.ARRAY_BUFFER, 0)

	sprite.texture = make([]gl.Uint, clip)
	gl.GenTextures(gl.Sizei(clip), &sprite.texture[0])

	clips := make([][]byte, clip)
	for i := range clips {
		clips[i] = data[i*(len(data)/len(clips)) : (i+1)*(len(data)/len(clips))]
		gl.BindTexture(gl.TEXTURE_2D, sprite.texture[len(clips)-1-i])
		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
		gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA,
			gl.Sizei(width), gl.Sizei(height),
			0, gl.RGBA, gl.UNSIGNED_BYTE,
			gl.Pointer(&clips[i][0]))
	}

	gl.BindTexture(gl.TEXTURE_2D, 0)

	return sprite, checkForErrors()
}
示例#6
0
文件: effect.go 项目: velovix/paunch
// SetVariablef sets a specified variable to the supplied integer to be passed
// into an effect.
func (effect *Effect) SetVariablef(variable string, val float32) error {

	var currEffect gl.Int
	gl.GetIntegerv(gl.CURRENT_PROGRAM, &currEffect)
	if gl.Uint(currEffect) != effect.program {
		return errors.New("effect is not currently in use")
	}

	effect.checkUniformVariable(variable)

	gl.Uniform1f(effect.uniforms[variable], gl.Float(val))
	return nil
}
示例#7
0
文件: effect.go 项目: velovix/paunch
// SetVariable4i sets a specified variable to the four supplied integers to be
// passed into an effect.
func (effect *Effect) SetVariable4i(variable string, val1 int, val2 int, val3 int, val4 int) error {

	var currEffect gl.Int
	gl.GetIntegerv(gl.CURRENT_PROGRAM, &currEffect)
	if gl.Uint(currEffect) != effect.program {
		return errors.New("effect is not currently in use")
	}

	effect.checkUniformVariable(variable)

	gl.Uniform4i(effect.uniforms[variable], gl.Int(val1), gl.Int(val2), gl.Int(val3), gl.Int(val4))
	return nil
}
示例#8
0
文件: text.go 项目: jctaylor1/haunts
// 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)
	})
}
示例#9
0
文件: shape.go 项目: velovix/paunch
// NewShape creates a new Shape object based on the verticies and shape type.
func NewShape(shapeType ShapeType, verticies []float64) (*Shape, error) {

	verticies32 := make([]float32, len(verticies))
	for i, val := range verticies {
		verticies32[i] = float32(val)
	}

	shape := &Shape{mode: gl.Enum(shapeType), size: len(verticies), vertexBuffer: 0, verticies: verticies32,
		scaleX: 1, scaleY: 1}

	gl.GenBuffers(1, &shape.vertexBuffer)
	gl.BindBuffer(gl.ARRAY_BUFFER, gl.Uint(shape.vertexBuffer))
	gl.BufferData(gl.ARRAY_BUFFER, gl.Sizeiptr(shape.size*4), gl.Pointer(&shape.verticies[0]), gl.DYNAMIC_DRAW)
	gl.BindBuffer(gl.ARRAY_BUFFER, 0)

	return shape, checkForErrors()
}
示例#10
0
func (mr *ModelReader) readModel(path string, m *Model) {

	var num uint16
	mr.readuint16(&num)

	for i := 0; i < int(num); i++ {
		var x, y, z float32
		mr.readfloat32(&x)
		mr.readfloat32(&y)
		mr.readfloat32(&z)

		m.vertices = append(m.vertices, gl.Float(x), gl.Float(y), gl.Float(z))
		//fmt.Printf("vertices %f, %f, %f \n", x, y, z)
	}
	//fmt.Printf("m.vertices size %d \n", len(m.vertices))

	var faces uint16
	mr.readuint16(&faces)
	//fmt.Println("nb faces  : ", faces)

	for i := 0; i < int(faces); i++ {
		var x, y, z uint16
		mr.readuint16(&x)
		mr.readuint16(&y)
		mr.readuint16(&z)

		m.indices = append(m.indices, gl.Uint(x), gl.Uint(y), gl.Uint(z))
		//fmt.Printf("face indices :%d, %d, %d \n", x, y, z)
	}

	var normals_num uint16
	mr.readuint16(&normals_num)

	for i := 0; i < int(normals_num); i++ {
		var x, y, z float32
		mr.readfloat32(&x)
		mr.readfloat32(&y)
		mr.readfloat32(&z)

		m.normals = append(m.normals, gl.Float(x), gl.Float(y), gl.Float(z))
		//fmt.Printf("normal %f, %f, %f \n", x, y, z)
	}

	var uvs_num uint16
	mr.readuint16(&uvs_num)
	//fmt.Printf("uvs num  %d \n", uvs_num)

	m.has_uv = uvs_num > 0

	if m.has_uv {
		for i := 0; i < int(uvs_num); i++ {
			var x, y float32
			mr.readfloat32(&x)
			mr.readfloat32(&y)

			m.uvs = append(m.uvs, gl.Float(x), gl.Float(y))
			//fmt.Printf("uvs %f, %f \n", x, y)
		}
	}

}
示例#11
0
文件: text.go 项目: jctaylor1/haunts
func (d *Dictionary) RenderString(s string, x, y, z, height float64, just Justification) {
	if len(s) == 0 {
		return
	}
	strbuf, ok := d.strs[s]
	if !ok {
		defer d.RenderString(s, x, y, z, height, just)
	} else {
		render.EnableShader("glop.font")
		diff := 20/math.Pow(height, 1.0) + 5*math.Pow(d.data.Scale, 1.0)/math.Pow(height, 1.0)
		if diff > 0.4 {
			// TODO: Need to come up with decent values here
			diff = 0.4
		}
		render.SetUniformF("glop.font", "dist_min", float32(0.5-diff))
		render.SetUniformF("glop.font", "dist_max", float32(0.5+diff))
		defer render.EnableShader("")
	}
	size := unsafe.Sizeof(dictVert{})
	scale := height / float64(d.data.Maxy-d.data.Miny)
	width := float32(d.figureWidth(s) * scale)
	x_pos := float32(x)
	switch just {
	case Center:
		x_pos -= width / 2
	case Right:
		x_pos -= width
	}
	if ok {
		gl.PushMatrix()
		defer gl.PopMatrix()
		gl.Translated(gl.Double(x_pos), gl.Double(y), gl.Double(z))
		gl.Scaled(gl.Double(scale), gl.Double(scale), 1)

		gl.PushAttrib(gl.COLOR_BUFFER_BIT)
		defer gl.PopAttrib()
		gl.Enable(gl.BLEND)
		gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)

		gl.Enable(gl.TEXTURE_2D)
		gl.BindTexture(gl.TEXTURE_2D, gl.Uint(d.texture))

		gl.BindBuffer(gl.ARRAY_BUFFER, gl.Uint(strbuf.vbuffer))

		gl.EnableClientState(gl.VERTEX_ARRAY)
		gl.VertexPointer(2, gl.FLOAT, gl.Sizei(size), nil)

		gl.EnableClientState(gl.TEXTURE_COORD_ARRAY)
		gl.TexCoordPointer(2, gl.FLOAT, gl.Sizei(size), gl.Pointer(unsafe.Offsetof(strbuf.vs[0].u)))

		gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.Uint(strbuf.ibuffer))
		gl.DrawElements(gl.TRIANGLES, gl.Sizei(len(strbuf.is)), gl.UNSIGNED_SHORT, nil)

		gl.DisableClientState(gl.VERTEX_ARRAY)
		gl.DisableClientState(gl.TEXTURE_COORD_ARRAY)
		gl.Disable(gl.TEXTURE_2D)
		return
	}
	x_pos = 0
	var prev rune
	for _, r := range s {
		if _, ok := d.data.Kerning[prev]; ok {
			x_pos += float32(d.data.Kerning[prev][r])
		}
		prev = r
		info := d.getInfo(r)
		xleft := x_pos + float32(info.Full_bounds.Min.X)
		xright := x_pos + float32(info.Full_bounds.Max.X)
		ytop := float32(info.Full_bounds.Max.Y) + float32(-d.data.Miny)
		ybot := float32(info.Full_bounds.Min.Y) + float32(-d.data.Miny)
		start := uint16(len(strbuf.vs))
		strbuf.is = append(strbuf.is, start+0)
		strbuf.is = append(strbuf.is, start+1)
		strbuf.is = append(strbuf.is, start+2)
		strbuf.is = append(strbuf.is, start+0)
		strbuf.is = append(strbuf.is, start+2)
		strbuf.is = append(strbuf.is, start+3)
		strbuf.vs = append(strbuf.vs, dictVert{
			x: xleft,
			y: ytop,
			u: float32(info.Pos.Min.X) / float32(d.data.Dx),
			v: float32(info.Pos.Max.Y) / float32(d.data.Dy),
		})
		strbuf.vs = append(strbuf.vs, dictVert{
			x: xleft,
			y: ybot,
			u: float32(info.Pos.Min.X) / float32(d.data.Dx),
			v: float32(info.Pos.Min.Y) / float32(d.data.Dy),
		})
		strbuf.vs = append(strbuf.vs, dictVert{
			x: xright,
			y: ybot,
			u: float32(info.Pos.Max.X) / float32(d.data.Dx),
			v: float32(info.Pos.Min.Y) / float32(d.data.Dy),
		})
		strbuf.vs = append(strbuf.vs, dictVert{
			x: xright,
			y: ytop,
			u: float32(info.Pos.Max.X) / float32(d.data.Dx),
			v: float32(info.Pos.Max.Y) / float32(d.data.Dy),
		})
		x_pos += float32(info.Advance) // - float32((info.Full_bounds.Dx() - info.Bounds.Dx()))
	}
	gl.GenBuffers(1, (*gl.Uint)(&strbuf.vbuffer))
	gl.BindBuffer(gl.ARRAY_BUFFER, gl.Uint(strbuf.vbuffer))
	gl.BufferData(gl.ARRAY_BUFFER, gl.Sizeiptr(int(size)*len(strbuf.vs)), gl.Pointer(&strbuf.vs[0].x), gl.STATIC_DRAW)

	gl.GenBuffers(1, (*gl.Uint)(&strbuf.ibuffer))
	gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.Uint(strbuf.ibuffer))
	gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, gl.Sizeiptr(int(unsafe.Sizeof(strbuf.is[0]))*len(strbuf.is)), gl.Pointer(&strbuf.is[0]), gl.STATIC_DRAW)
	d.strs[s] = strbuf
}