func loadTexture(glctx gl.Context) {
a, err := asset.Open("key.jpeg")
if err != nil {
log.Fatal(err)
}
defer a.Close()
img, _, err := image.Decode(a)
if err != nil {
log.Fatal(err)
}
rect := img.Bounds()
rgba := image.NewRGBA(rect)
draw.Draw(rgba, rect, img, rect.Min, draw.Src)
tex := glctx.CreateTexture()
glctx.ActiveTexture(gl.TEXTURE0)
glctx.BindTexture(gl.TEXTURE_2D, tex)
glctx.TexImage2D(gl.TEXTURE_2D, 0, 859, 610, gl.RGBA, gl.UNSIGNED_BYTE, rgba.Pix)
glctx.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
glctx.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
glctx.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
glctx.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
glctx.ActiveTexture(gl.TEXTURE0)
glctx.BindTexture(gl.TEXTURE_2D, tex)
glctx.TexImage2D(
gl.TEXTURE_2D, 0,
rect.Max.X-rect.Min.X, rect.Max.Y-rect.Min.Y,
gl.RGBA, gl.UNSIGNED_BYTE, rgba.Pix)
}
// TODO pass in an actual Texture ...
func NewTextureBuffer(ctx gl.Context, width, height int) *TextureFramebuffer {
buf := &TextureFramebuffer{w: width, h: height}
buf.fbo = Framebuffer{ctx.CreateFramebuffer()}
buf.tex = Texture{ctx.CreateTexture()}
buf.def = TextureDef(0, width, height, gl.RGBA, nil)
buf.filter = TextureFilter(gl.LINEAR, gl.LINEAR)
buf.wrap = TextureWrap(gl.REPEAT, gl.REPEAT)
buf.withtex = FramebufferWithTex(buf.tex, 0, buf.def, buf.filter, buf.wrap)
return buf
}
func (tex *Texture) Create(ctx gl.Context) {
tex.Texture = ctx.CreateTexture()
}
