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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2014-11-22 16:51:56 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2014-11-22 16:51:56 -0600
commita582c6e22dc2ca97d3589b2459aba83aaf95ed0d (patch)
tree9ec380591408880d6c707da2c788a074f58b4e7b /twin
parentc7056bbf7b320a5855760c6b6ecd3f14606e5306 (diff)
downloadtdebase-a582c6e22dc2ca97d3589b2459aba83aaf95ed0d.tar.gz
tdebase-a582c6e22dc2ca97d3589b2459aba83aaf95ed0d.zip
Add optional global/per window greyscale transparency filter to compton-tde
Diffstat (limited to 'twin')
-rw-r--r--twin/compton-tde/common.h54
-rw-r--r--twin/compton-tde/compton.c155
-rw-r--r--twin/compton-tde/compton.h6
-rw-r--r--twin/compton-tde/opengl.c169
4 files changed, 382 insertions, 2 deletions
diff --git a/twin/compton-tde/common.h b/twin/compton-tde/common.h
index acaf6865..ddb00fad 100644
--- a/twin/compton-tde/common.h
+++ b/twin/compton-tde/common.h
@@ -490,6 +490,17 @@ typedef struct {
} glx_blur_cache_t;
typedef struct {
+ /// Framebuffer used for greyscale conversion.
+ GLuint fbo;
+ /// Textures used for greyscale conversion.
+ GLuint textures[2];
+ /// Width of the textures.
+ int width;
+ /// Height of the textures.
+ int height;
+} glx_greyscale_cache_t;
+
+typedef struct {
/// GLSL program.
GLuint prog;
/// Location of uniform "opacity" in window GLSL program.
@@ -714,6 +725,10 @@ typedef struct _options_t {
c2_lptr_t *blur_background_blacklist;
/// Blur convolution kernel.
XFixed *blur_kerns[MAX_BLUR_PASS];
+ /// Whether to set background of semi-transparent / ARGB windows to greyscale.
+ bool greyscale_background;
+ /// Greyscale background blacklist. A linked list of conditions.
+ c2_lptr_t *greyscale_background_blacklist;
/// How much to dim an inactive window. 0.0 - 1.0, 0 to disable.
double inactive_dim;
/// Whether to use fixed inactive dim opacity, instead of deciding
@@ -1047,10 +1062,12 @@ typedef struct _session_t {
Atom atom_compton_shadow;
/// Atom of property <code>_NET_WM_WINDOW_TYPE</code>.
Atom atom_win_type;
- /// Atom of property <code>_KDE_TRANSPARENT_TO_BLACK</code>.
+ /// Atom of property <code>_TDE_TRANSPARENT_TO_BLACK</code>.
Atom atom_win_type_tde_transparent_to_black;
- /// Atom of property <code>_KDE_TRANSPARENT_TO_DESKTOP</code>.
+ /// Atom of property <code>_TDE_TRANSPARENT_TO_DESKTOP</code>.
Atom atom_win_type_tde_transparent_to_desktop;
+ /// Atom of property <code>_TDE_TRANSPARENCY_FILTER_GREYSCALE</code>.
+ Atom atom_win_type_tde_transparency_filter_greyscale;
/// Array of atoms of all possible window types.
Atom atoms_wintypes[NUM_WINTYPES];
/// Linked list of additional atoms to track.
@@ -1241,6 +1258,11 @@ typedef struct _win {
/// Background state on last paint.
bool blur_background_last;
+ /// Whether to set window background to greyscale.
+ bool greyscale_background;
+ /// Background state on last paint.
+ bool greyscale_background_last;
+
/// Whether to show black background
bool show_black_background;
@@ -1250,6 +1272,9 @@ typedef struct _win {
#ifdef CONFIG_VSYNC_OPENGL_GLSL
/// Textures and FBO background blur use.
glx_blur_cache_t glx_blur_cache;
+
+ /// Textures and FBO greyscale background use.
+ glx_greyscale_cache_t glx_greyscale_cache;
#endif
} win;
@@ -2219,6 +2244,10 @@ glx_dim_dst(session_t *ps, int dx, int dy, int width, int height, float z,
GLfloat factor, XserverRegion reg_tgt, const reg_data_t *pcache_reg);
bool
+glx_greyscale_dst(session_t *ps, int dx, int dy, int width, int height, float z,
+ XserverRegion reg_tgt, const reg_data_t *pcache_reg, glx_greyscale_cache_t *pbc);
+
+bool
glx_render_(session_t *ps, const glx_texture_t *ptex,
int x, int y, int dx, int dy, int width, int height, int z,
double opacity, bool argb, bool neg,
@@ -2306,6 +2335,26 @@ free_glx_bc(session_t *ps, glx_blur_cache_t *pbc) {
free_glx_fbo(ps, &pbc->fbo);
free_glx_bc_resize(ps, pbc);
}
+
+/**
+ * Free data in glx_greyscale_cache_t on resize.
+ */
+static inline void
+free_glx_gc_resize(session_t *ps, glx_greyscale_cache_t *pbc) {
+ free_texture_r(ps, &pbc->textures[0]);
+ free_texture_r(ps, &pbc->textures[1]);
+ pbc->width = 0;
+ pbc->height = 0;
+}
+
+/**
+ * Free a glx_greyscale_cache_t
+ */
+static inline void
+free_glx_gc(session_t *ps, glx_greyscale_cache_t *pbc) {
+ free_glx_fbo(ps, &pbc->fbo);
+ free_glx_gc_resize(ps, pbc);
+}
#endif
#endif
@@ -2349,6 +2398,7 @@ free_win_res_glx(session_t *ps, win *w) {
free_paint_glx(ps, &w->shadow_paint);
#ifdef CONFIG_VSYNC_OPENGL_GLSL
free_glx_bc(ps, &w->glx_blur_cache);
+ free_glx_gc(ps, &w->glx_greyscale_cache);
#endif
}
diff --git a/twin/compton-tde/compton.c b/twin/compton-tde/compton.c
index 36af91f5..4a4d058f 100644
--- a/twin/compton-tde/compton.c
+++ b/twin/compton-tde/compton.c
@@ -1260,6 +1260,7 @@ paint_preprocess(session_t *ps, win *list) {
w->fade = w->fade_last;
win_set_invert_color(ps, w, w->invert_color_last);
win_set_blur_background(ps, w, w->blur_background_last);
+ win_set_greyscale_background(ps, w, w->greyscale_background_last);
}
// Update window opacity target and dim state if asked
@@ -1407,6 +1408,7 @@ paint_preprocess(session_t *ps, win *list) {
w->fade_last = w->fade;
w->invert_color_last = w->invert_color;
w->blur_background_last = w->blur_background;
+ w->greyscale_background_last = w->greyscale_background;
}
}
}
@@ -1546,6 +1548,53 @@ xr_blur_dst(session_t *ps, Picture tgt_buffer,
return true;
}
+/**
+ * @brief Make an area on a buffer greyscale.
+ *
+ * @param ps current session
+ * @param tgt_buffer a buffer as both source and destination
+ * @param x x pos
+ * @param y y pos
+ * @param wid width
+ * @param hei height
+ * @param reg_clip a clipping region to be applied on intermediate buffers
+ *
+ * @return true if successful, false otherwise
+ */
+static bool
+xr_greyscale_dst(session_t *ps, Picture tgt_buffer,
+ int x, int y, int wid, int hei, XserverRegion reg_clip) {
+
+ // Directly copying from tgt_buffer to it does not work, so we create a
+ // Picture in the middle.
+ Picture tmp_picture = xr_build_picture(ps, wid, hei, NULL);
+
+ if (!tmp_picture) {
+ printf_errf("(): Failed to build intermediate Picture.");
+ return false;
+ }
+
+ if (reg_clip && tmp_picture)
+ XFixesSetPictureClipRegion(ps->dpy, tmp_picture, reg_clip, 0, 0);
+
+ Picture src_pict = tgt_buffer, dst_pict = tmp_picture;
+
+ XRenderComposite(ps->dpy, PictOpHSLLuminosity, src_pict, None,
+ dst_pict, x, y, 0, 0, 0, 0, wid, hei);
+
+ XserverRegion tmp = src_pict;
+ src_pict = dst_pict;
+ dst_pict = tmp;
+
+ if (src_pict != tgt_buffer)
+ XRenderComposite(ps->dpy, PictOpSrc, src_pict, None, tgt_buffer,
+ 0, 0, 0, 0, x, y, wid, hei);
+
+ free_picture(ps, &tmp_picture);
+
+ return true;
+}
+
/*
* WORK-IN-PROGRESS!
static void
@@ -1647,6 +1696,35 @@ win_blur_background(session_t *ps, win *w, Picture tgt_buffer,
}
}
+/**
+ * Set the background of a window to greyscale.
+ */
+static inline void
+win_greyscale_background(session_t *ps, win *w, Picture tgt_buffer,
+ XserverRegion reg_paint, const reg_data_t *pcache_reg) {
+ const int x = w->a.x;
+ const int y = w->a.y;
+ const int wid = w->widthb;
+ const int hei = w->heightb;
+
+ switch (ps->o.backend) {
+ case BKEND_XRENDER:
+ case BKEND_XR_GLX_HYBRID:
+ {
+ xr_greyscale_dst(ps, tgt_buffer, x, y, wid, hei, reg_paint);
+ }
+ break;
+#ifdef CONFIG_VSYNC_OPENGL_GLSL
+ case BKEND_GLX:
+ glx_greyscale_dst(ps, x, y, wid, hei, ps->psglx->z - 0.5,
+ reg_paint, pcache_reg, &w->glx_greyscale_cache);
+ break;
+#endif
+ default:
+ assert(0);
+ }
+}
+
static void
render_(session_t *ps, int x, int y, int dx, int dy, int wid, int hei,
double opacity, bool argb, bool neg,
@@ -2111,6 +2189,11 @@ paint_all(session_t *ps, XserverRegion region, XserverRegion region_real, win *t
win_blur_background(ps, w, ps->tgt_buffer.pict, reg_paint, &cache_reg);
}
+ // Set window background to greyscale
+ if (w->greyscale_background && (!win_is_solid(ps, w))) {
+ win_greyscale_background(ps, w, ps->tgt_buffer.pict, reg_paint, &cache_reg);
+ }
+
// Painting the window
win_paint_win(ps, w, reg_paint, &cache_reg);
}
@@ -2403,6 +2486,7 @@ map_win(session_t *ps, Window id) {
}
win_determine_blur_background(ps, w);
+ win_determine_greyscale_background(ps, w);
w->damaged = false;
@@ -2520,6 +2604,28 @@ get_opacity_percent(win *w) {
}
static Bool
+get_window_transparency_filter_greyscale(const session_t *ps, Window w)
+{
+ Atom actual;
+ int format;
+ unsigned long n, left;
+
+ unsigned char *data;
+ int result = XGetWindowProperty (ps->dpy, w, ps->atom_win_type_tde_transparency_filter_greyscale, 0L, 1L, False,
+ XA_ATOM, &actual, &format,
+ &n, &left, &data);
+
+ if (result == Success && data != None && format == 32 )
+ {
+ Atom a;
+ a = *(long*)data;
+ XFree ( (void *) data);
+ return True;
+ }
+ return False;
+}
+
+static Bool
get_window_transparent_to_desktop(const session_t *ps, Window w)
{
Atom actual;
@@ -2950,6 +3056,32 @@ win_determine_blur_background(session_t *ps, win *w) {
win_set_blur_background(ps, w, blur_background_new);
}
+static void
+win_set_greyscale_background(session_t *ps, win *w, bool greyscale_background_new) {
+ if (w->greyscale_background == greyscale_background_new) return;
+
+ w->greyscale_background = greyscale_background_new;
+
+ // Only consider window damaged if it's previously painted with background
+ // set to greyscale
+ if (!win_is_solid(ps, w))
+ add_damage_win(ps, w);
+}
+
+/**
+ * Determine if a window should have a greyscale background.
+ */
+static void
+win_determine_greyscale_background(session_t *ps, win *w) {
+ if (IsViewable != w->a.map_state)
+ return;
+
+ bool greyscale_background_new = (get_window_transparency_filter_greyscale(ps, w) ||
+ (ps->o.greyscale_background && !win_match(ps, w, ps->o.greyscale_background_blacklist, &w->cache_bbblst)));
+
+ win_set_greyscale_background(ps, w, greyscale_background_new);
+}
+
/**
* Update window opacity according to opacity rules.
*/
@@ -3006,6 +3138,8 @@ win_on_factor_change(session_t *ps, win *w) {
win_update_focused(ps, w);
if (ps->o.blur_background_blacklist)
win_determine_blur_background(ps, w);
+ if (ps->o.greyscale_background_blacklist)
+ win_determine_greyscale_background(ps, w);
if (ps->o.opacity_rules)
win_update_opacity_rule(ps, w);
if (IsViewable == w->a.map_state && ps->o.paint_blacklist)
@@ -3273,6 +3407,7 @@ add_win(session_t *ps, Window id, Window prev) {
.invert_color_force = UNSET,
.blur_background = false,
+ .greyscale_background = false,
.show_black_background = false,
.show_root_tile = false,
@@ -5037,6 +5172,11 @@ usage(int ret) {
" 11x11gaussian.\n"
"--blur-background-exclude condition\n"
" Exclude conditions for background blur.\n"
+ "--greyscale-background\n"
+ " Set background of semi-transparent / ARGB windows to greyscale.\n"
+ " The switch name may change without prior notifications.\n"
+ "--greyscale-background-exclude condition\n"
+ " Exclude conditions for greyscale background.\n"
"--resize-damage integer\n"
" Resize damaged region by a specific number of pixels. A positive\n"
" value enlarges it while a negative one shrinks it. Useful for\n"
@@ -5909,12 +6049,16 @@ parse_config(session_t *ps, struct options_tmp *pcfgtmp) {
parse_cfg_condlst(ps, &cfg, &ps->o.invert_color_list, "invert-color-include");
// --blur-background-exclude
parse_cfg_condlst(ps, &cfg, &ps->o.blur_background_blacklist, "blur-background-exclude");
+ // --greyscale-background-exclude
+ parse_cfg_condlst(ps, &cfg, &ps->o.greyscale_background_blacklist, "greyscale-background-exclude");
// --opacity-rule
parse_cfg_condlst_opct(ps, &cfg, "opacity-rule");
// --unredir-if-possible-exclude
parse_cfg_condlst(ps, &cfg, &ps->o.unredir_if_possible_blacklist, "unredir-if-possible-exclude");
// --blur-background
lcfg_lookup_bool(&cfg, "blur-background", &ps->o.blur_background);
+ // --greyscale-background
+ lcfg_lookup_bool(&cfg, "greyscale-background", &ps->o.greyscale_background);
// --blur-background-frame
lcfg_lookup_bool(&cfg, "blur-background-frame",
&ps->o.blur_background_frame);
@@ -6066,6 +6210,8 @@ get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
{ "no-fading-opacitychange", no_argument, NULL, 321 },
{ "reredir-on-root-change", no_argument, NULL, 731 },
{ "glx-reinit-on-root-change", no_argument, NULL, 732 },
+ { "greyscale-background", no_argument, NULL, 733 },
+ { "greyscale-background-exclude", required_argument, NULL, 734 },
// Must terminate with a NULL entry
{ NULL, 0, NULL, 0 },
};
@@ -6339,6 +6485,11 @@ get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
P_CASEBOOL(321, no_fading_opacitychange);
P_CASEBOOL(731, reredir_on_root_change);
P_CASEBOOL(732, glx_reinit_on_root_change);
+ P_CASEBOOL(733, greyscale_background);
+ case 734:
+ // --greyscale-background-exclude
+ condlst_add(ps, &ps->o.greyscale_background_blacklist, optarg);
+ break;
default:
usage(1);
break;
@@ -6479,6 +6630,7 @@ init_atoms(session_t *ps) {
ps->atom_win_type_tde_transparent_to_black = get_atom(ps, "_TDE_TRANSPARENT_TO_BLACK");
ps->atom_win_type_tde_transparent_to_desktop = get_atom(ps, "_TDE_TRANSPARENT_TO_DESKTOP");
+ ps->atom_win_type_tde_transparency_filter_greyscale = get_atom(ps, "_TDE_TRANSPARENCY_FILTER_GREYSCALE");
}
#ifdef CONFIG_XRANDR
@@ -7350,6 +7502,7 @@ session_init(session_t *ps_old, int argc, char **argv) {
.blur_background_fixed = false,
.blur_background_blacklist = NULL,
.blur_kerns = { NULL },
+ .greyscale_background = false,
.inactive_dim = 0.0,
.inactive_dim_fixed = false,
.invert_color_list = NULL,
@@ -7447,6 +7600,7 @@ session_init(session_t *ps_old, int argc, char **argv) {
.atom_win_type = None,
.atom_win_type_tde_transparent_to_black = None,
.atom_win_type_tde_transparent_to_desktop = None,
+ .atom_win_type_tde_transparency_filter_greyscale = None,
.atoms_wintypes = { 0 },
.track_atom_lst = NULL,
@@ -7851,6 +8005,7 @@ session_destroy(session_t *ps) {
free_wincondlst(&ps->o.focus_blacklist);
free_wincondlst(&ps->o.invert_color_list);
free_wincondlst(&ps->o.blur_background_blacklist);
+ free_wincondlst(&ps->o.greyscale_background_blacklist);
free_wincondlst(&ps->o.opacity_rules);
free_wincondlst(&ps->o.paint_blacklist);
free_wincondlst(&ps->o.unredir_if_possible_blacklist);
diff --git a/twin/compton-tde/compton.h b/twin/compton-tde/compton.h
index c1c87705..b9108139 100644
--- a/twin/compton-tde/compton.h
+++ b/twin/compton-tde/compton.h
@@ -871,6 +871,12 @@ static void
win_determine_blur_background(session_t *ps, win *w);
static void
+win_set_greyscale_background(session_t *ps, win *w, bool greyscale_background_new);
+
+static void
+win_determine_greyscale_background(session_t *ps, win *w);
+
+static void
win_on_wtype_change(session_t *ps, win *w);
static void
diff --git a/twin/compton-tde/opengl.c b/twin/compton-tde/opengl.c
index 2b9ff628..de485de7 100644
--- a/twin/compton-tde/opengl.c
+++ b/twin/compton-tde/opengl.c
@@ -1386,6 +1386,175 @@ glx_blur_dst_end:
#endif
bool
+glx_greyscale_dst(session_t *ps, int dx, int dy, int width, int height, float z,
+ XserverRegion reg_tgt, const reg_data_t *pcache_reg, glx_greyscale_cache_t *pbc) {
+ bool ret = false;
+
+ // Calculate copy region size
+ glx_greyscale_cache_t ibc = { .width = 0, .height = 0 };
+ if (!pbc)
+ pbc = &ibc;
+
+#ifdef DEBUG_GLX
+ printf_dbgf("(): %d, %d, %d, %d\n", dx, dy, width, height);
+#endif
+
+ // Free textures if size inconsistency discovered
+ if (width != pbc->width || height != pbc->height)
+ free_glx_gc_resize(ps, pbc);
+
+ // Generate FBO and textures if needed
+ if (!pbc->textures[0])
+ pbc->textures[0] = glx_gen_texture(ps, GL_TEXTURE_2D, width, height);
+ GLuint tex_scr1 = pbc->textures[0];
+ pbc->width = width;
+ pbc->height = height;
+
+ if (!tex_scr1) {
+ printf_errf("(): Failed to allocate texture.");
+ goto glx_greyscale_dst_end;
+ }
+
+ // Texture scaling factor
+ GLfloat texfac_x = 1.0f, texfac_y = 1.0f;
+ texfac_x /= width;
+ texfac_y /= height;
+
+ // Greyscale conversion in OpenGL ES taken nearly verbatim from this answer on Stack Overflow: http://stackoverflow.com/a/9690145
+
+ // Enable texture unit 0 to divide RGB values in our texture by 2
+ glActiveTexture(GL_TEXTURE0);
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, tex_scr1);
+
+ // Read destination pixels into the GL texture
+ glx_copy_region_to_tex(ps, GL_TEXTURE_2D, dx, dy, dx, dy, width, height);
+
+ // Finish setting up texture
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
+ glClientActiveTexture(GL_TEXTURE0);
+
+ // GL_MODULATE is Arg0 * Arg1
+ glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
+
+ // Configure Arg0
+ glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
+ glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
+
+ // Configure Arg1
+ float multipliers[4] = {.5, .5, .5, 0.0};
+ glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_CONSTANT);
+ glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
+ glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, (GLfloat*)&multipliers);
+
+ // Enable texture unit 1 to increase RGB values by .5
+ glActiveTexture(GL_TEXTURE1);
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, tex_scr1);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
+ glClientActiveTexture(GL_TEXTURE1);
+
+ // GL_ADD is Arg0 + Arg1
+ glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_ADD);
+
+ // Configure Arg0
+ glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PREVIOUS);
+ glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
+
+ // Configure Arg1
+ GLfloat additions[4] = {.5, .5, .5, 0.0};
+ glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_CONSTANT);
+ glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
+ glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, (GLfloat*)&additions);
+
+ // Enable texture combiner 2 to get a DOT3_RGB product of your RGB values
+ glActiveTexture(GL_TEXTURE2);
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, tex_scr1);
+ glClientActiveTexture(GL_TEXTURE2);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
+
+ // GL_DOT3_RGB is 4*((Arg0r - 0.5) * (Arg1r - 0.5) + (Arg0g - 0.5) * (Arg1g - 0.5) + (Arg0b - 0.5) * (Arg1b - 0.5))
+ glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_DOT3_RGB);
+
+ // Configure Arg0
+ glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PREVIOUS);
+ glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
+
+ // Configure Arg1
+ // We want this to adjust our DOT3 by R*0.3 + G*0.59 + B*0.11
+ // So, our actual adjustment will need to take into consideration
+ // the fact that OpenGL will subtract .5 from our Arg1
+ // and we need to also take into consideration that we have divided
+ // our RGB values by 2 and we are multiplying the entire
+ // DOT3 product by 4
+ // So, for Red adjustment you will get :
+ // .65 = (4*(0.3))/2 + 0.5 = (0.3/2) + 0.5
+ GLfloat weights[4] = {.65, .795, .555, 1.};
+ glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_CONSTANT);
+ glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
+ glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, (GLfloat*)&weights);
+
+ // Render!
+ {
+ P_PAINTREG_START();
+ {
+ const GLfloat rx = (crect.x - dx) * texfac_x;
+ const GLfloat ry = (height - (crect.y - dy)) * texfac_y;
+ const GLfloat rxe = rx + crect.width * texfac_x;
+ const GLfloat rye = ry - crect.height * texfac_y;
+ GLfloat rdx = crect.x;
+ GLfloat rdy = ps->root_height - crect.y;
+ GLfloat rdxe = rdx + crect.width;
+ GLfloat rdye = rdy - crect.height;
+
+#ifdef DEBUG_GLX
+ printf_dbgf("(): %f, %f, %f, %f -> %f, %f, %f, %f\n", rx, ry, rxe, rye, rdx, rdy, rdxe, rdye);
+#endif
+
+ glTexCoord2f(rx, ry);
+ glVertex3f(rdx, rdy, z);
+
+ glTexCoord2f(rxe, ry);
+ glVertex3f(rdxe, rdy, z);
+
+ glTexCoord2f(rxe, rye);
+ glVertex3f(rdxe, rdye, z);
+
+ glTexCoord2f(rx, rye);
+ glVertex3f(rdx, rdye, z);
+ }
+ P_PAINTREG_END();
+ }
+
+ glEnd();
+
+ // Clean up by disabling your texture combiners or texture units.
+ glActiveTexture(GL_TEXTURE2);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+ glDisable(GL_TEXTURE_2D);
+
+ glActiveTexture(GL_TEXTURE1);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+ glDisable(GL_TEXTURE_2D);
+
+ glActiveTexture(GL_TEXTURE0);
+ glClientActiveTexture(GL_TEXTURE0);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ ret = true;
+
+glx_greyscale_dst_end:
+ if (&ibc == pbc) {
+ free_glx_gc(ps, pbc);
+ }
+
+ glx_check_err(ps);
+
+ return ret;
+}
+
+bool
glx_dim_dst(session_t *ps, int dx, int dy, int width, int height, float z,
GLfloat factor, XserverRegion reg_tgt, const reg_data_t *pcache_reg) {
// It's possible to dim in glx_render(), but it would be over-complicated