Esempio n. 1
0
File: texture.go Progetto: dmac/gg
func NewSprite(vertices []float32, program *gg.Program, texture *gg.Texture) (*Sprite, error) {
	buf := new(bytes.Buffer)
	if err := binary.Write(buf, binary.LittleEndian, vertices); err != nil {
		return nil, err
	}
	pvbo := gg.CreateBuffer()
	gg.BindBuffer(gg.ARRAY_BUFFER, pvbo)
	gg.BufferData(gg.ARRAY_BUFFER, buf.Bytes(), gg.STATIC_DRAW)

	texVertices := []float32{
		0, 0,
		0, 1,
		1, 1,
		1, 0,
	}
	buf.Reset()
	if err := binary.Write(buf, binary.LittleEndian, texVertices); err != nil {
		return nil, err
	}
	tvbo := gg.CreateBuffer()
	gg.BindBuffer(gg.ARRAY_BUFFER, tvbo)
	gg.BufferData(gg.ARRAY_BUFFER, buf.Bytes(), gg.STATIC_DRAW)

	return &Sprite{
		pvbo:    pvbo,
		tvbo:    tvbo,
		program: program,
		tex:     texture,
	}, nil
}
Esempio n. 2
0
File: triangle.go Progetto: dmac/gg
func NewTriangle(vertices []float32, program *gg.Program) (*Triangle, error) {
	buf := new(bytes.Buffer)
	if err := binary.Write(buf, binary.LittleEndian, vertices); err != nil {
		return nil, err
	}
	vbo := gg.CreateBuffer()
	gg.BindBuffer(gg.ARRAY_BUFFER, vbo)
	gg.BufferData(gg.ARRAY_BUFFER, buf.Bytes(), gg.STATIC_DRAW)
	return &Triangle{
		vbo:     vbo,
		program: program,
	}, nil
}
Esempio n. 3
0
File: tetris.go Progetto: dmac/gg
func NewSprite(width, height float32, program *gg.Program, texture *gg.Texture) *Sprite {
	s := &Sprite{
		scale:   1,
		width:   width,
		height:  height,
		tex:     texture,
		program: program,
	}

	pvertices := []float32{
		0, 0, 0,
		0, s.height, 0,
		s.width, s.height, 0,
		s.width, 0, 0,
	}
	buf := new(bytes.Buffer)
	if err := binary.Write(buf, binary.LittleEndian, pvertices); err != nil {
		panic(err)
	}
	s.pbuf = gg.CreateBuffer()
	gg.BindBuffer(gg.ARRAY_BUFFER, s.pbuf)
	gg.BufferData(gg.ARRAY_BUFFER, buf.Bytes(), gg.STATIC_DRAW)

	tvertices := []float32{
		0, 0,
		0, 1,
		1, 1,
		1, 0,
	}
	buf.Reset()
	if err := binary.Write(buf, binary.LittleEndian, tvertices); err != nil {
		panic(err)
	}
	s.tbuf = gg.CreateBuffer()
	gg.BindBuffer(gg.ARRAY_BUFFER, s.tbuf)
	gg.BufferData(gg.ARRAY_BUFFER, buf.Bytes(), gg.STATIC_DRAW)
	return s
}