--- rxvt-unicode/src/rxvtimg.C 2012/06/08 21:41:45 1.65 +++ rxvt-unicode/src/rxvtimg.C 2012/06/15 13:21:59 1.91 @@ -4,6 +4,58 @@ #if HAVE_IMG +#if 0 +struct pict +{ + Display *dpy; + Picture pic; + + operator Picture () const + { + return pic; + } + + pict () + : pic (0) + { + } + + pict (rxvt_img *img, XRenderPictFormat *format = 0) + : dpy (img->s->display->dpy) + { + XRenderPictureAttributes pa; + pa.repeat = img->repeat; + pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa); + } + + ~pict () + { + if (pic) + XRenderFreePicture (dpy, pic); + } +}; +#endif + +static XRenderPictFormat * +find_alpha_format_for (Display *dpy, XRenderPictFormat *format) +{ + if (format->direct.alphaMask) + return format; // already has alpha + + // try to find a suitable alpha format, one bit alpha is enough for our purposes + if (format->type == PictTypeDirect) + for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) + if (f->direct.alphaMask + && f->type == PictTypeDirect + && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) + && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) + && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) + return f; + + // should be a very good fallback + return XRenderFindStandardFormat (dpy, PictStandardARGB32); +} + rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) : s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), pm(0), ref(0) @@ -51,6 +103,8 @@ return img; } +# if HAVE_PIXBUF + rxvt_img * rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) { @@ -64,7 +118,6 @@ // since we require rgb24/argb32 formats from xrender we assume // that both 24 and 32 bpp MUST be supported by any screen that supports xrender - int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; @@ -78,7 +131,7 @@ xi.bitmap_unit = 0; //XY only, unused xi.bitmap_bit_order = 0; //XY only, unused xi.bitmap_pad = BitmapPad (dpy); - xi.depth = depth; + xi.depth = 32; xi.bytes_per_line = 0; xi.bits_per_pixel = 32; //Z only xi.red_mask = 0x00000000; //Z only, unused @@ -97,9 +150,9 @@ xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); int rowstride = gdk_pixbuf_get_rowstride (pb); - - assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb)); + bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); unsigned char *row = gdk_pixbuf_get_pixels (pb); + char *line = xi.data; for (int y = 0; y < height; y++) @@ -107,14 +160,14 @@ unsigned char *src = row; uint32_t *dst = (uint32_t *)line; - if (depth == 24) + if (!pb_has_alpha) for (int x = 0; x < width; x++) { uint8_t r = *src++; uint8_t g = *src++; uint8_t b = *src++; - uint32_t v = (r << 16) | (g << 8) | b; + uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) v = ecb_bswap32 (v); @@ -141,7 +194,7 @@ line += xi.bytes_per_line; } - rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); + rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); img->alloc (); GC gc = XCreateGC (dpy, img->pm, 0, 0); @@ -169,6 +222,8 @@ return img; } +# endif + void rxvt_img::destroy () { @@ -194,7 +249,7 @@ } Picture -rxvt_img::src_picture () +rxvt_img::picture () { Display *dpy = s->display->dpy; @@ -223,25 +278,51 @@ } void -rxvt_img::fill (const rxvt_color &c) +rxvt_img::fill (const rgba &c) { - XGCValues gcv; - gcv.foreground = c; - GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); - XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); - XFreeGC (s->display->dpy, gc); + XRenderColor rc = { c.r, c.g, c.b, c.a }; + + Display *dpy = s->display->dpy; + Picture src = picture (); + XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); + XRenderFreePicture (dpy, src); +} + +void +rxvt_img::add_alpha () +{ + if (format->direct.alphaMask) + return; + + Display *dpy = s->display->dpy; + + rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); + img->alloc (); + + Picture src = picture (); + Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); + + XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); + + XRenderFreePicture (dpy, src); + XRenderFreePicture (dpy, dst); + + ::swap (img->ref, ref); + ::swap (img->pm , pm ); + + delete img; } static void -get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) +get_gaussian_kernel (int radius, int width, rxvt_img::nv *kernel, XFixed *params) { - double sigma = radius / 2.0; - double scale = sqrt (2.0 * M_PI) * sigma; - double sum = 0.0; + rxvt_img::nv sigma = radius / 2.0; + rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma; + rxvt_img::nv sum = 0.0; for (int i = 0; i < width; i++) { - double x = i - width / 2; + rxvt_img::nv x = i - width / 2; kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; sum += kernel[i]; } @@ -261,7 +342,7 @@ Display *dpy = s->display->dpy; int size = max (rh, rv) * 2 + 1; - double *kernel = (double *)malloc (size * sizeof (double)); + nv *kernel = (nv *)malloc (size * sizeof (nv)); XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); img->alloc (); @@ -309,6 +390,7 @@ free (kernel); free (params); + XRenderFreePicture (dpy, src); XRenderFreePicture (dpy, dst); XRenderFreePicture (dpy, tmp); @@ -317,64 +399,141 @@ } static Picture -create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) +create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) { Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); XRenderPictureAttributes pa; - pa.repeat = True; - Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); + pa.repeat = RepeatNormal; + pa.component_alpha = component_alpha; + Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); XFreePixmap (dpy, pixmap); return mask; } +static void +extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) +{ + int32_t x = clamp (c, cl0, cl1); + c -= x; + xc = x; +} + +static bool +extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa) +{ + extract (cl0, cl1, r, xr); + extract (cl0, cl1, g, xg); + extract (cl0, cl1, b, xb); + extract (cl0, cl1, a, xa); + + return xr | xg | xb | xa; +} + void -rxvt_img::brightness (uint16_t r, uint16_t g, uint16_t b, uint16_t a) +rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) { + unshare (); + Display *dpy = s->display->dpy; - Picture src = create_xrender_mask (dpy, pm, True); Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); - XRenderColor mask_c; - mask_c.red = r; - mask_c.green = g; - mask_c.blue = b; - mask_c.alpha = a; - XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); + // loop should not be needed for brightness, as only -1..1 makes sense + //while (r | g | b | a) + { + unsigned short xr, xg, xb, xa; + XRenderColor mask_c; - XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); + if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) + XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); + + if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) + { + XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; + XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); + mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing + mask_c.green = -mask_c.green; + mask_c.blue = -mask_c.blue; + mask_c.alpha = -mask_c.alpha; + XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); + XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); + } + } - XRenderFreePicture (dpy, src); XRenderFreePicture (dpy, dst); } void -rxvt_img::contrast (uint16_t r, uint16_t g, uint16_t b, uint16_t a) +rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) { - if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) + if (r < 0 || g < 0 || b < 0 || a < 0) + rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); + + rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); + img->alloc (); + img->fill (rgba (0, 0, 0, 0)); + + // premultiply (yeah, these are not exact, sue me or fix it) + r = (r * (a >> 8)) >> 8; + g = (g * (a >> 8)) >> 8; + b = (b * (a >> 8)) >> 8; + + Display *dpy = s->display->dpy; + + Picture src = picture (); + Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); + Picture mul = create_xrender_mask (dpy, pm, True, True); + + //TODO: this operator does not yet implement some useful contrast + while (r | g | b | a) { - rxvt_warn ("rxvt_img::contrast operation not supported on this display, RENDER extension too old.\n"); - return; + unsigned short xr, xg, xb, xa; + XRenderColor mask_c; + + if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) + { + XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); + XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); + } } - Display *dpy = s->display->dpy; - Picture src = create_xrender_mask (dpy, pm, True); - Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); + XRenderFreePicture (dpy, mul); + XRenderFreePicture (dpy, dst); + XRenderFreePicture (dpy, src); - XRenderColor mask_c; - mask_c.red = r; - mask_c.green = g; - mask_c.blue = b; - mask_c.alpha = a; - XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); + ::swap (img->ref, ref); + ::swap (img->pm , pm ); + + delete img; +} + +void +rxvt_img::draw (rxvt_img *img, int op, nv mask) +{ + unshare (); + + Display *dpy = s->display->dpy; + Picture src = img->picture (); + Picture dst = picture (); + Picture mask_p = 0; + + if (mask != 1.) + { + mask_p = create_xrender_mask (dpy, img->pm, False, False); + XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; + XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); + } - XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); + XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); XRenderFreePicture (dpy, src); XRenderFreePicture (dpy, dst); + + if (mask_p) + XRenderFreePicture (dpy, mask_p); } rxvt_img * @@ -383,26 +542,6 @@ return new rxvt_img (*this); } -static XRenderPictFormat * -find_alpha_format_for (Display *dpy, XRenderPictFormat *format) -{ - if (format->direct.alphaMask) - return format; // already has alpha - - // try to find a suitable alpha format, one bit alpha is enough for our purposes - if (format->type == PictTypeDirect) - for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) - if (f->direct.alphaMask - && f->type == PictTypeDirect - && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) - && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) - && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) - return f; - - // should be a very good fallback - return XRenderFindStandardFormat (dpy, PictStandardARGB32); -} - rxvt_img * rxvt_img::reify () { @@ -419,17 +558,17 @@ rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); img->alloc (); - Picture src = src_picture (); + Picture src = picture (); Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); if (alpha) { XRenderColor rc = { 0, 0, 0, 0 }; XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles - XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); + XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); } else - XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); + XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); XRenderFreePicture (dpy, src); XRenderFreePicture (dpy, dst); @@ -442,8 +581,8 @@ { rxvt_img *img = clone (); - img->x += x; - img->y += y; + img->x -= x; + img->y -= y; if (w != width || h != height) { @@ -458,30 +597,118 @@ return img; } +typedef rxvt_img::nv matrix[3][3]; + +static void +mat_invert (matrix mat, rxvt_img::nv (&inv)[3][3]) +{ + rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; + rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; + rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; + + rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); + + inv [0][0] = invdet * s0; + inv [0][1] = invdet * s1; + inv [0][2] = invdet * s2; + + inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); + inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); + inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); + + inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); + inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); + inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); +} + +static rxvt_img::nv +mat_apply (matrix mat, int i, rxvt_img::nv x, rxvt_img::nv y) +{ + rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; + rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; + + return v * (1. / w); +} + +static void +mat_mult (matrix a, matrix b, matrix r) +{ + for (int i = 0; i < 3; ++i) + for (int j = 0; j < 3; ++j) + r [i][j] = a [i][0] * b [0][j] + + a [i][1] * b [1][j] + + a [i][2] * b [2][j]; +} + +static void +mat_trans (rxvt_img::nv x, rxvt_img::nv y, matrix mat) +{ + mat [0][0] = 1; mat [0][1] = 0; mat [0][2] = x; + mat [1][0] = 0; mat [1][1] = 1; mat [1][2] = y; + mat [2][0] = 0; mat [2][1] = 0; mat [2][2] = 1; +} + rxvt_img * -rxvt_img::transform (int new_width, int new_height, double matrix[9]) +rxvt_img::transform (nv matrix[3][3]) { - rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); + // calculate new pixel bounding box coordinates + nv r[2], rmin[2], rmax[2]; + + for (int i = 0; i < 2; ++i) + { + nv v; + + v = mat_apply (matrix, i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; + v = mat_apply (matrix, i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); + v = mat_apply (matrix, i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); + v = mat_apply (matrix, i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); + } + + float sx = rmin [0] - x; + float sy = rmin [1] - y; + + // TODO: adjust matrix for subpixel accuracy + int nx = floor (rmin [0]); + int ny = floor (rmin [1]); + + int new_width = ceil (rmax [0] - rmin [0]); + int new_height = ceil (rmax [1] - rmin [1]); + + ::matrix tr, tmp; + mat_trans (x, y, tr); + mat_mult (matrix, tr, tmp); + mat_trans (-x, -y, tr); + mat_mult (tr, tmp, matrix); + + ::matrix inv; + mat_invert (matrix, inv); + + rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); img->alloc (); Display *dpy = s->display->dpy; - Picture src = src_picture (); + Picture src = picture (); Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); XTransform xfrm; for (int i = 0; i < 3; ++i) for (int j = 0; j < 3; ++j) - xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); - -#if 0 - xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO - xfrm.matrix [1][2] -= XDoubleToFixed (y); -#endif + xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); XRenderSetPictureFilter (dpy, src, "good", 0, 0); XRenderSetPictureTransform (dpy, src, &xfrm); - XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); + XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); +#if 1 + { + XRenderColor rc = { 65535,0,0,65535 }; + XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, new_width, new_height); + }{ + XRenderColor rc = { 0,0,0,65535 }; + XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 1, 1, new_width - 2, new_height - 2); + } + XRenderComposite (dpy, PictOpOver, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); +#endif XRenderFreePicture (dpy, src); XRenderFreePicture (dpy, dst); @@ -495,16 +722,16 @@ if (w == new_width && h == new_height) return clone (); - double matrix[9] = { - w / (double)new_width, 0, 0, - 0, h / (double)new_height, 0, - 0, 0, 1 + nv matrix[3][3] = { + { new_width / (nv)w, 0, 0 }, + { 0, new_height / (nv)h, 0 }, + { 0, 0, 1 } }; int old_repeat_mode = repeat; - repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems + repeat = RepeatPad; // not right, but xrender can't properly scale it seems - rxvt_img *img = transform (new_width, new_height, matrix); + rxvt_img *img = transform (matrix); repeat = old_repeat_mode; img->repeat = repeat; @@ -513,22 +740,33 @@ } rxvt_img * -rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) +rxvt_img::rotate (int cx, int cy, nv phi) { - double s = sin (phi); - double c = cos (phi); + nv s = sin (phi); + nv c = cos (phi); - double matrix[9] = { - c, -s, -c * x + s * y + x, - s, c, -s * x - c * y + y, - 0, 0, 1 + nv matrix[3][3] = { +#if 0 + { c, -s, cx - c * cx + s * cy }, + { s, c, cy - s * cx - c * cy }, + { 0, 0, 1 } +#else + { c, -s, 0 }, + { s, c, 0 }, + { 0, 0, 1 } +#endif }; - return transform (new_width, new_height, matrix); + move (-cx, -cy); + rxvt_img *img = transform (matrix); + move ( cx, cy); + img->move (cx, cy); + + return img; } rxvt_img * -rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) +rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) { if (new_format == format) return clone (); @@ -537,17 +775,14 @@ img->alloc (); Display *dpy = s->display->dpy; - Picture src = src_picture (); + Picture src = picture (); Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); int op = PictOpSrc; if (format->direct.alphaMask && !new_format->direct.alphaMask) { // does it have to be that complicated - rgba c; - bg.get (c); - - XRenderColor rc = { c.r, c.g, c.b, 0xffff }; + XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); op = PictOpOver; @@ -562,13 +797,13 @@ } rxvt_img * -rxvt_img::blend (rxvt_img *img, double factor) +rxvt_img::blend (rxvt_img *img, nv factor) { rxvt_img *img2 = clone (); Display *dpy = s->display->dpy; - Picture src = img->src_picture (); + Picture src = img->picture (); Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); - Picture mask = create_xrender_mask (dpy, img->pm, False); + Picture mask = create_xrender_mask (dpy, img->pm, False, False); XRenderColor mask_c;