func drawPrep() {
gl.Disable(gl.DEPTH_TEST)
gl.Disable(gl.TEXTURE_2D)
gl.PolygonMode(gl.FRONT_AND_BACK, gl.FILL)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.ClearStencil(0)
gl.Clear(gl.STENCIL_BUFFER_BIT)
}
func (w *TextLine) coreDraw(region Region) {
if region.Size() == 0 {
return
}
gl.PolygonMode(gl.FRONT_AND_BACK, gl.FILL)
gl.Color4d(1.0, 1.0, 1.0, 1.0)
req := w.Request_dims
if req.Dx > region.Dx {
req.Dx = region.Dx
}
if req.Dy > region.Dy {
req.Dy = region.Dy
}
if req.Dx*region.Dy < req.Dy*region.Dx {
req.Dy = (region.Dy * req.Dx) / region.Dx
} else {
req.Dx = (region.Dx * req.Dy) / region.Dy
}
w.Render_region.Dims = req
w.Render_region.Point = region.Point
tx := float64(w.rdims.Dx) / float64(w.rgba.Bounds().Dx())
ty := float64(w.rdims.Dy) / float64(w.rgba.Bounds().Dy())
// w.scale = float64(w.Render_region.Dx) / float64(w.rdims.Dx)
{
r, g, b, a := w.color.RGBA()
gl.Color4d(float64(r)/65535, float64(g)/65535, float64(b)/65535, float64(a)/65535)
}
gl.Begin(gl.QUADS)
gl.TexCoord2d(0, 0)
gl.Vertex2i(region.X, region.Y)
gl.TexCoord2d(0, -ty)
gl.Vertex2i(region.X, region.Y+w.rdims.Dy)
gl.TexCoord2d(tx, -ty)
gl.Vertex2i(region.X+w.rdims.Dx, region.Y+w.rdims.Dy)
gl.TexCoord2d(tx, 0)
gl.Vertex2i(region.X+w.rdims.Dx, region.Y)
gl.End()
}