Example #1
0
func LoadTextureCubeMap(filenames *[6]string, minFilter int, magFilter int) *Texture {
	ch := make(chan *Texture)
	GL <- func() {
		tex := NewTextureCubeMap()
		tex.SetFilters(minFilter, magFilter)
		tex.Bind(0)
		var surfaces [6]*sdl.Surface
		for i, filename := range filenames {
			surfaces[i] = sdl.Load(filename)
			if surfaces[i] == nil {
				panic(sdl.GetError())
			}
			defer surfaces[i].Free()
		}
		tex.Width = int(surfaces[0].W)
		tex.Height = int(surfaces[0].H)
		uploadSurface(gl33.TEXTURE_CUBE_MAP_POSITIVE_X, surfaces[0])
		uploadSurface(gl33.TEXTURE_CUBE_MAP_NEGATIVE_X, surfaces[1])
		uploadSurface(gl33.TEXTURE_CUBE_MAP_POSITIVE_Y, surfaces[2])
		uploadSurface(gl33.TEXTURE_CUBE_MAP_NEGATIVE_Y, surfaces[3])
		uploadSurface(gl33.TEXTURE_CUBE_MAP_POSITIVE_Z, surfaces[4])
		uploadSurface(gl33.TEXTURE_CUBE_MAP_NEGATIVE_Z, surfaces[5])
		gl33.GenerateMipmap(gl33.TEXTURE_CUBE_MAP)
		ch <- tex
	}
	return <-ch
}
Example #2
0
func LoadTexture2D(filename string, minFilter int, magFilter int) *Texture {
	ch := make(chan *Texture)
	GL <- func() {
		tex := NewTexture2D()
		tex.SetFilters(minFilter, magFilter)
		tex.Bind(0)
		surface := sdl.Load(filename)
		if surface == nil {
			panic(sdl.GetError())
		}
		defer surface.Free()
		tex.Width = int(surface.W)
		tex.Height = int(surface.H)
		uploadSurface(gl33.TEXTURE_2D, surface)
		gl33.GenerateMipmap(gl33.TEXTURE_2D)
		ch <- tex
	}
	return <-ch
}
Example #3
0
func LoadTextureArray(filenames []string, minFilter int, magFilter int) *Texture {
	ch := make(chan *Texture)
	GL <- func() {
		tex := NewTextureArray()
		tex.SetFilters(minFilter, magFilter)
		tex.Bind(0)
		surfaces := make([]*sdl.Surface, len(filenames))
		for i, filename := range filenames {
			surfaces[i] = sdl.Load(filename)
			if surfaces[i] == nil {
				panic(sdl.GetError())
			}
			defer surfaces[i].Free()
		}
		tex.Width = int(surfaces[0].W)
		tex.Height = int(surfaces[0].H)
		var internalFormat gl33.Int
		var format gl33.Enum
		var size int
		if surfaces[0].Format.BitsPerPixel == 32 {
			internalFormat = gl33.RGBA8
			format = gl33.RGBA
			size = 4
		} else {
			internalFormat = gl33.RGB8
			format = gl33.RGB
			size = 3
		}
		pixels := make([]byte, tex.Width*tex.Height*len(surfaces)*size)
		for i, surface := range surfaces {
			p := uintptr(surface.Pixels)
			for j := 0; j < tex.Width*tex.Height*size; j++ {
				pixels[i*tex.Width*tex.Height*size+j] = *(*byte)(unsafe.Pointer(p + uintptr(j)))
			}
		}
		gl33.TexImage3D(gl33.TEXTURE_2D_ARRAY, 0, internalFormat, gl33.Sizei(tex.Width), gl33.Sizei(tex.Height), gl33.Sizei(len(surfaces)), 0, format, gl33.UNSIGNED_BYTE, gl33.Pointer(&pixels[0]))
		gl33.GenerateMipmap(gl33.TEXTURE_2D_ARRAY)
		ch <- tex
	}
	return <-ch
}