Exemplo n.º 1
0
func (l *Level) CreateSurface(surface *sdl.Surface) {
	f := surface.Format
	l.Surface = sdl.CreateRGBSurface(sdl.SWSURFACE, SCREENWIDTH, SCREENHEIGHT, BPP, f.Rmask, f.Gmask, f.Bmask, f.Amask)
	var x, y int16
	for y = 0; y < 15; y++ {
		for x = 0; x < 20; x++ {
			l.Surface.Blit(&sdl.Rect{BOXSIZE * x, BOXSIZE * y, BOXSIZE, BOXSIZE}, IM.Tiles[l.Grid[y][x]], nil)
		}
	}
	l.Surface.Flip()
}
Exemplo n.º 2
0
func (f *Font) setupTextRendering(color [3]byte, txt string) (gl.GLuint, *sdl.Surface, *sdl.Surface, *sdl.Surface, int, int) {

	//
	var texture gl.GLuint

	/* Use SDL_TTF to render our text */
	var col sdl.Color
	col.R = color[0]
	col.G = color[1]
	col.B = color[2]

	// get surface with text
	initial := ttf.RenderText_Blended(f.font, txt, col)

	/* Convert the rendered text to a known format */
	w := next_p2(int(initial.W))
	h := next_p2(int(initial.H))

	intermediarya := sdl.CreateRGBSurface(0, w, h, 32,
		0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000)

	var rr *sdl.Rect = nil
	intermediarya.Blit(rr, initial, rr)

	intermediary := intermediarya.DisplayFormatAlpha()

	/* Tell GL about our new texture */
	gl.GenTextures(1, &texture)
	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.TexImage2D(gl.TEXTURE_2D, 0, 4, gl.GLsizei(w), gl.GLsizei(h), 0, gl.BGRA,
		gl.UNSIGNED_BYTE, unsafe.Pointer(intermediary.Pixels))

	gl.TexEnvi(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)

	/* GL_NEAREST looks horrible, if scaled... */
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)

	/* prepare to render our texture */
	gl.Enable(gl.TEXTURE_2D)

	gl.BindTexture(gl.TEXTURE_2D, texture)
	gl.Color4f(1.0, 1.0, 1.0, 1.0)

	gl.Enable(gl.BLEND)
	//	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
	gl.BlendFunc(gl.ONE, gl.ONE_MINUS_SRC_COLOR) // TODO : MAke real alpha work!

	return texture, initial, intermediarya, intermediary, w, h
}
Exemplo n.º 3
0
func NewButton(x, y, w, h float64, text string, Func func()) *Button {
	b := new(Button)
	b.X, b.Y = x, y
	b.W, b.H = w, h
	b.OnClick = Func

	//Setup Image
	f := screen.Format
	b.Image = sdl.CreateRGBSurface(sdl.SWSURFACE, int(w), int(h), BPP, f.Rmask, f.Gmask, f.Bmask, f.Amask)
	b.Image.FillRect(&sdl.Rect{0, 0, uint16(w), uint16(h)}, 0xFF00FF)
	tekst := ttf.RenderText_Blended(font, text, sdl.Color{255, 255, 255, 0})
	b.Image.Blit(&sdl.Rect{5, 5, 0, 0}, tekst, nil)
	b.Image.Flip()

	return b
}