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b0fbfec4f09f6ec28f6c1e00a87b1da8329b4701
picom/src/render.c
Bernd Busse 4b5cc050d5 Add clip-shadow-above configuration and wintype option 
Added the new `clip-shadow-above` configuration and wintype option.
These allow the user to select windows to clip from the shadow region of
other windows, i.e. don't paint shadows on top of them.

This should provide a more useful and userfriendly alternative to the
deprecated `shadow-exclude-reg` option — especially for docks and bars.
2021-07-14 14:43:28 +02:00

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// SPDX-License-Identifier: MPL-2.0
// Copyright (c) Yuxuan Shui <yshuiv7@gmail.com>
#include <stdlib.h>
#include <string.h>
#include <xcb/composite.h>
#include <xcb/render.h>
#include <xcb/sync.h>
#include <xcb/xcb_image.h>
#include <xcb/xcb_renderutil.h>
#include "common.h"
#include "options.h"
#ifdef CONFIG_OPENGL
#include "backend/gl/glx.h"
#include "opengl.h"
#ifndef GLX_BACK_BUFFER_AGE_EXT
#define GLX_BACK_BUFFER_AGE_EXT 0x20F4
#endif
#endif
#include "compiler.h"
#include "config.h"
#include "kernel.h"
#include "log.h"
#include "region.h"
#include "types.h"
#include "utils.h"
#include "vsync.h"
#include "win.h"
#include "x.h"
#include "backend/backend.h"
#include "backend/backend_common.h"
#include "render.h"
#define XRFILTER_CONVOLUTION "convolution"
#define XRFILTER_GAUSSIAN "gaussian"
#define XRFILTER_BINOMIAL "binomial"
/**
* Bind texture in paint_t if we are using GLX backend.
*/
static inline bool paint_bind_tex(session_t *ps, paint_t *ppaint, int wid, int hei,
bool repeat, int depth, xcb_visualid_t visual, bool force) {
#ifdef CONFIG_OPENGL
// XXX This is a mess. But this will go away after the backend refactor.
if (!ppaint->pixmap)
return false;
struct glx_fbconfig_info *fbcfg;
if (!visual) {
assert(depth == 32);
if (!ps->argb_fbconfig) {
ps->argb_fbconfig =
glx_find_fbconfig(ps->dpy, ps->scr,
(struct xvisual_info){.red_size = 8,
.green_size = 8,
.blue_size = 8,
.alpha_size = 8,
.visual_depth = 32});
}
if (!ps->argb_fbconfig) {
log_error("Failed to find appropriate FBConfig for 32 bit depth");
return false;
}
fbcfg = ps->argb_fbconfig;
} else {
auto m = x_get_visual_info(ps->c, visual);
if (m.visual_depth < 0) {
return false;
}
if (depth && depth != m.visual_depth) {
log_error("Mismatching visual depth: %d != %d", depth, m.visual_depth);
return false;
}
if (!ppaint->fbcfg) {
ppaint->fbcfg = glx_find_fbconfig(ps->dpy, ps->scr, m);
}
if (!ppaint->fbcfg) {
log_error("Failed to find appropriate FBConfig for X pixmap");
return false;
}
fbcfg = ppaint->fbcfg;
}
if (force || !glx_tex_binded(ppaint->ptex, ppaint->pixmap))
return glx_bind_pixmap(ps, &ppaint->ptex, ppaint->pixmap, wid, hei,
repeat, fbcfg);
#else
(void)ps;
(void)ppaint;
(void)wid;
(void)hei;
(void)repeat;
(void)depth;
(void)visual;
(void)force;
#endif
return true;
}
/**
* Check if current backend uses XRender for rendering.
*/
static inline bool bkend_use_xrender(session_t *ps) {
return BKEND_XRENDER == ps->o.backend || BKEND_XR_GLX_HYBRID == ps->o.backend;
}
int maximum_buffer_age(session_t *ps) {
if (bkend_use_glx(ps) && ps->o.use_damage) {
return CGLX_MAX_BUFFER_AGE;
}
return 1;
}
static int get_buffer_age(session_t *ps) {
#ifdef CONFIG_OPENGL
if (bkend_use_glx(ps)) {
if (!glxext.has_GLX_EXT_buffer_age && ps->o.use_damage) {
log_warn("GLX_EXT_buffer_age not supported by your driver,"
"`use-damage` has to be disabled");
ps->o.use_damage = false;
}
if (ps->o.use_damage) {
unsigned int val;
glXQueryDrawable(ps->dpy, get_tgt_window(ps),
GLX_BACK_BUFFER_AGE_EXT, &val);
return (int)val ?: -1;
}
return -1;
}
#endif
return ps->o.use_damage ? 1 : -1;
}
/**
* Reset filter on a <code>Picture</code>.
*/
static inline void xrfilter_reset(session_t *ps, xcb_render_picture_t p) {
#define FILTER "Nearest"
xcb_render_set_picture_filter(ps->c, p, strlen(FILTER), FILTER, 0, NULL);
#undef FILTER
}
/// Set the input/output clip region of the target buffer (not the actual target!)
static inline void attr_nonnull(1, 2) set_tgt_clip(session_t *ps, region_t *reg) {
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID:
x_set_picture_clip_region(ps->c, ps->tgt_buffer.pict, 0, 0, reg);
break;
#ifdef CONFIG_OPENGL
case BKEND_GLX: glx_set_clip(ps, reg); break;
#endif
default: assert(false);
}
}
/**
* Destroy a <code>Picture</code>.
*/
void free_picture(xcb_connection_t *c, xcb_render_picture_t *p) {
if (*p) {
xcb_render_free_picture(c, *p);
*p = XCB_NONE;
}
}
/**
* Free paint_t.
*/
void free_paint(session_t *ps, paint_t *ppaint) {
#ifdef CONFIG_OPENGL
free_paint_glx(ps, ppaint);
#endif
free_picture(ps->c, &ppaint->pict);
if (ppaint->pixmap)
xcb_free_pixmap(ps->c, ppaint->pixmap);
ppaint->pixmap = XCB_NONE;
}
uint32_t
make_circle(int cx, int cy, int radius, uint32_t max_ntraps, xcb_render_trapezoid_t traps[]) {
uint32_t n = 0, k = 0;
int y1, y2;
double w;
while (k < max_ntraps) {
y1 = (int)(-radius * cos(M_PI * k / max_ntraps));
traps[n].top = (cy + y1) * 65536;
traps[n].left.p1.y = (cy + y1) * 65536;
traps[n].right.p1.y = (cy + y1) * 65536;
w = sqrt(radius * radius - y1 * y1) * 65536;
traps[n].left.p1.x = (int)((cx * 65536) - w);
traps[n].right.p1.x = (int)((cx * 65536) + w);
do {
k++;
y2 = (int)(-radius * cos(M_PI * k / max_ntraps));
} while (y1 == y2);
traps[n].bottom = (cy + y2) * 65536;
traps[n].left.p2.y = (cy + y2) * 65536;
traps[n].right.p2.y = (cy + y2) * 65536;
w = sqrt(radius * radius - y2 * y2) * 65536;
traps[n].left.p2.x = (int)((cx * 65536) - w);
traps[n].right.p2.x = (int)((cx * 65536) + w);
n++;
}
return n;
}
uint32_t make_rectangle(int x, int y, int wid, int hei, xcb_render_trapezoid_t traps[]) {
traps[0].top = y * 65536;
traps[0].left.p1.y = y * 65536;
traps[0].left.p1.x = x * 65536;
traps[0].left.p2.y = (y + hei) * 65536;
traps[0].left.p2.x = x * 65536;
traps[0].bottom = (y + hei) * 65536;
traps[0].right.p1.x = (x + wid) * 65536;
traps[0].right.p1.y = y * 65536;
traps[0].right.p2.x = (x + wid) * 65536;
traps[0].right.p2.y = (y + hei) * 65536;
return 1;
}
uint32_t make_rounded_window_shape(xcb_render_trapezoid_t traps[], uint32_t max_ntraps,
int cr, int wid, int hei) {
uint32_t n = make_circle(cr, cr, cr, max_ntraps, traps);
n += make_circle(wid - cr, cr, cr, max_ntraps, traps + n);
n += make_circle(wid - cr, hei - cr, cr, max_ntraps, traps + n);
n += make_circle(cr, hei - cr, cr, max_ntraps, traps + n);
n += make_rectangle(0, cr, wid, hei - 2 * cr, traps + n);
n += make_rectangle(cr, 0, wid - 2 * cr, cr, traps + n);
n += make_rectangle(cr, hei - cr, wid - 2 * cr, cr, traps + n);
return n;
}
void render(session_t *ps, int x, int y, int dx, int dy, int wid, int hei, int fullwid,
int fullhei, double opacity, bool argb, bool neg, int cr,
xcb_render_picture_t pict, glx_texture_t *ptex, const region_t *reg_paint,
const glx_prog_main_t *pprogram, clip_t *clip) {
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID: {
auto alpha_step = (int)(opacity * MAX_ALPHA);
xcb_render_picture_t alpha_pict = ps->alpha_picts[alpha_step];
if (alpha_step != 0) {
if (cr) {
xcb_render_picture_t p_tmp = x_create_picture_with_standard(
ps->c, ps->root, fullwid, fullhei,
XCB_PICT_STANDARD_ARGB_32, 0, 0);
xcb_render_color_t trans = {
.red = 0, .blue = 0, .green = 0, .alpha = 0};
const xcb_rectangle_t rect = {
.x = 0,
.y = 0,
.width = to_u16_checked(fullwid),
.height = to_u16_checked(fullhei)};
xcb_render_fill_rectangles(ps->c, XCB_RENDER_PICT_OP_SRC,
p_tmp, trans, 1, &rect);
uint32_t max_ntraps = to_u32_checked(cr);
xcb_render_trapezoid_t traps[4 * max_ntraps + 3];
uint32_t n = make_rounded_window_shape(
traps, max_ntraps, cr, fullwid, fullhei);
xcb_render_trapezoids(
ps->c, XCB_RENDER_PICT_OP_OVER, alpha_pict, p_tmp,
x_get_pictfmt_for_standard(ps->c, XCB_PICT_STANDARD_A_8),
0, 0, n, traps);
xcb_render_composite(
ps->c, XCB_RENDER_PICT_OP_OVER, pict, p_tmp,
ps->tgt_buffer.pict, to_i16_checked(x),
to_i16_checked(y), to_i16_checked(x), to_i16_checked(y),
to_i16_checked(dx), to_i16_checked(dy),
to_u16_checked(wid), to_u16_checked(hei));
xcb_render_free_picture(ps->c, p_tmp);
} else {
xcb_render_picture_t p_tmp = alpha_pict;
if (clip) {
p_tmp = x_create_picture_with_standard(
ps->c, ps->root, wid, hei,
XCB_PICT_STANDARD_ARGB_32, 0, 0);
xcb_render_color_t black = {
.red = 255, .blue = 255, .green = 255, .alpha = 255};
const xcb_rectangle_t rect = {
.x = 0,
.y = 0,
.width = to_u16_checked(wid),
.height = to_u16_checked(hei)};
xcb_render_fill_rectangles(ps->c, XCB_RENDER_PICT_OP_SRC,
p_tmp, black, 1, &rect);
if (alpha_pict) {
xcb_render_composite(
ps->c, XCB_RENDER_PICT_OP_SRC,
alpha_pict, XCB_NONE, p_tmp, 0, 0, 0,
0, 0, 0, to_u16_checked(wid),
to_u16_checked(hei));
}
xcb_render_composite(
ps->c, XCB_RENDER_PICT_OP_OUT_REVERSE,
clip->pict, XCB_NONE, p_tmp, 0, 0, 0, 0,
to_i16_checked(clip->x), to_i16_checked(clip->y),
to_u16_checked(wid), to_u16_checked(hei));
}
uint8_t op = ((!argb && !alpha_pict && !clip)
? XCB_RENDER_PICT_OP_SRC
: XCB_RENDER_PICT_OP_OVER);
xcb_render_composite(
ps->c, op, pict, p_tmp, ps->tgt_buffer.pict,
to_i16_checked(x), to_i16_checked(y), 0, 0,
to_i16_checked(dx), to_i16_checked(dy),
to_u16_checked(wid), to_u16_checked(hei));
if (clip) {
xcb_render_free_picture(ps->c, p_tmp);
}
}
}
break;
}
#ifdef CONFIG_OPENGL
case BKEND_GLX:
glx_render(ps, ptex, x, y, dx, dy, wid, hei, ps->psglx->z, opacity, argb,
neg, reg_paint, pprogram);
ps->psglx->z += 1;
break;
#endif
default: assert(0);
}
#ifndef CONFIG_OPENGL
(void)neg;
(void)ptex;
(void)reg_paint;
(void)pprogram;
#endif
}
static inline void
paint_region(session_t *ps, const struct managed_win *w, int x, int y, int wid, int hei,
double opacity, const region_t *reg_paint, xcb_render_picture_t pict) {
const int dx = (w ? w->g.x : 0) + x;
const int dy = (w ? w->g.y : 0) + y;
const int fullwid = w ? w->widthb : 0;
const int fullhei = w ? w->heightb : 0;
const bool argb = (w && (win_has_alpha(w) || ps->o.force_win_blend));
const bool neg = (w && w->invert_color);
render(ps, x, y, dx, dy, wid, hei, fullwid, fullhei, opacity, argb, neg,
w ? w->corner_radius : 0, pict,
(w ? w->paint.ptex : ps->root_tile_paint.ptex), reg_paint,
#ifdef CONFIG_OPENGL
w ? &ps->glx_prog_win : NULL
#else
NULL
#endif
,
XCB_NONE);
}
/**
* Check whether a paint_t contains enough data.
*/
static inline bool paint_isvalid(session_t *ps, const paint_t *ppaint) {
// Don't check for presence of Pixmap here, because older X Composite doesn't
// provide it
if (!ppaint)
return false;
if (bkend_use_xrender(ps) && !ppaint->pict)
return false;
#ifdef CONFIG_OPENGL
if (BKEND_GLX == ps->o.backend && !glx_tex_binded(ppaint->ptex, XCB_NONE))
return false;
#endif
return true;
}
/**
* Paint a window itself and dim it if asked.
*/
void paint_one(session_t *ps, struct managed_win *w, const region_t *reg_paint) {
// Fetch Pixmap
if (!w->paint.pixmap) {
w->paint.pixmap = x_new_id(ps->c);
set_ignore_cookie(ps, xcb_composite_name_window_pixmap(ps->c, w->base.id,
w->paint.pixmap));
}
xcb_drawable_t draw = w->paint.pixmap;
if (!draw) {
log_error("Failed to get pixmap from window %#010x (%s), window won't be "
"visible",
w->base.id, w->name);
return;
}
// XRender: Build picture
if (bkend_use_xrender(ps) && !w->paint.pict) {
xcb_render_create_picture_value_list_t pa = {
.subwindowmode = XCB_SUBWINDOW_MODE_INCLUDE_INFERIORS,
};
w->paint.pict = x_create_picture_with_pictfmt_and_pixmap(
ps->c, w->pictfmt, draw, XCB_RENDER_CP_SUBWINDOW_MODE, &pa);
}
// GLX: Build texture
// Let glx_bind_pixmap() determine pixmap size, because if the user
// is resizing windows, the width and height we get may not be up-to-date,
// causing the jittering issue M4he reported in #7.
if (!paint_bind_tex(ps, &w->paint, 0, 0, false, 0, w->a.visual,
(!ps->o.glx_no_rebind_pixmap && w->pixmap_damaged))) {
log_error("Failed to bind texture for window %#010x.", w->base.id);
}
w->pixmap_damaged = false;
if (!paint_isvalid(ps, &w->paint)) {
log_error("Window %#010x is missing painting data.", w->base.id);
return;
}
const int x = w->g.x;
const int y = w->g.y;
const uint16_t wid = to_u16_checked(w->widthb);
const uint16_t hei = to_u16_checked(w->heightb);
xcb_render_picture_t pict = w->paint.pict;
// Invert window color, if required
if (bkend_use_xrender(ps) && w->invert_color) {
xcb_render_picture_t newpict = x_create_picture_with_pictfmt(
ps->c, ps->root, wid, hei, w->pictfmt, 0, NULL);
if (newpict) {
// Apply clipping region to save some CPU
if (reg_paint) {
region_t reg;
pixman_region32_init(&reg);
pixman_region32_copy(&reg, (region_t *)reg_paint);
pixman_region32_translate(&reg, -x, -y);
// FIXME XFixesSetPictureClipRegion(ps->dpy, newpict, 0,
// 0, reg);
pixman_region32_fini(&reg);
}
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_SRC, pict, XCB_NONE,
newpict, 0, 0, 0, 0, 0, 0, wid, hei);
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_DIFFERENCE,
ps->white_picture, XCB_NONE, newpict, 0, 0,
0, 0, 0, 0, wid, hei);
// We use an extra PictOpInReverse operation to get correct
// pixel alpha. There could be a better solution.
if (win_has_alpha(w))
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_IN_REVERSE,
pict, XCB_NONE, newpict, 0, 0, 0, 0,
0, 0, wid, hei);
pict = newpict;
}
}
if (w->frame_opacity == 1) {
paint_region(ps, w, 0, 0, wid, hei, w->opacity, reg_paint, pict);
} else {
// Painting parameters
const margin_t extents = win_calc_frame_extents(w);
const auto t = extents.top;
const auto l = extents.left;
const auto b = extents.bottom;
const auto r = extents.right;
#define COMP_BDR(cx, cy, cwid, chei) \
paint_region(ps, w, (cx), (cy), (cwid), (chei), w->frame_opacity * w->opacity, \
reg_paint, pict)
// Sanitize the margins, in case some broken WM makes
// top_width + bottom_width > height in some cases.
do {
// top
int body_height = hei;
// ctop = checked top
// Make sure top margin is smaller than height
int ctop = min2(body_height, t);
if (ctop > 0)
COMP_BDR(0, 0, wid, ctop);
body_height -= ctop;
if (body_height <= 0)
break;
// bottom
// cbot = checked bottom
// Make sure bottom margin is not too large
int cbot = min2(body_height, b);
if (cbot > 0)
COMP_BDR(0, hei - cbot, wid, cbot);
// Height of window exclude the margin
body_height -= cbot;
if (body_height <= 0)
break;
// left
int body_width = wid;
int cleft = min2(body_width, l);
if (cleft > 0)
COMP_BDR(0, ctop, cleft, body_height);
body_width -= cleft;
if (body_width <= 0)
break;
// right
int cright = min2(body_width, r);
if (cright > 0)
COMP_BDR(wid - cright, ctop, cright, body_height);
body_width -= cright;
if (body_width <= 0)
break;
// body
paint_region(ps, w, cleft, ctop, body_width, body_height,
w->opacity, reg_paint, pict);
} while (0);
}
#undef COMP_BDR
if (pict != w->paint.pict)
free_picture(ps->c, &pict);
// Dimming the window if needed
if (w->dim) {
double dim_opacity = ps->o.inactive_dim;
if (!ps->o.inactive_dim_fixed)
dim_opacity *= w->opacity;
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID: {
auto cval = (uint16_t)(0xffff * dim_opacity);
// Premultiply color
xcb_render_color_t color = {
.red = 0,
.green = 0,
.blue = 0,
.alpha = cval,
};
xcb_rectangle_t rect = {
.x = to_i16_checked(x),
.y = to_i16_checked(y),
.width = wid,
.height = hei,
};
xcb_render_fill_rectangles(ps->c, XCB_RENDER_PICT_OP_OVER,
ps->tgt_buffer.pict, color, 1, &rect);
} break;
#ifdef CONFIG_OPENGL
case BKEND_GLX:
glx_dim_dst(ps, x, y, wid, hei, (int)(ps->psglx->z - 0.7),
(float)dim_opacity, reg_paint);
break;
#endif
default: assert(false);
}
}
}
extern const char *background_props_str[];
static bool get_root_tile(session_t *ps) {
/*
if (ps->o.paint_on_overlay) {
return ps->root_picture;
} */
assert(!ps->root_tile_paint.pixmap);
ps->root_tile_fill = false;
bool fill = false;
xcb_pixmap_t pixmap = x_get_root_back_pixmap(ps->c, ps->root, ps->atoms);
// Make sure the pixmap we got is valid
if (pixmap && !x_validate_pixmap(ps->c, pixmap))
pixmap = XCB_NONE;
// Create a pixmap if there isn't any
if (!pixmap) {
pixmap = x_create_pixmap(ps->c, (uint8_t)ps->depth, ps->root, 1, 1);
if (pixmap == XCB_NONE) {
log_error("Failed to create pixmaps for root tile.");
return false;
}
fill = true;
}
// Create Picture
xcb_render_create_picture_value_list_t pa = {
.repeat = true,
};
ps->root_tile_paint.pict = x_create_picture_with_visual_and_pixmap(
ps->c, ps->vis, pixmap, XCB_RENDER_CP_REPEAT, &pa);
// Fill pixmap if needed
if (fill) {
xcb_render_color_t col;
xcb_rectangle_t rect;
col.red = col.green = col.blue = 0x8080;
col.alpha = 0xffff;
rect.x = rect.y = 0;
rect.width = rect.height = 1;
xcb_render_fill_rectangles(ps->c, XCB_RENDER_PICT_OP_SRC,
ps->root_tile_paint.pict, col, 1, &rect);
}
ps->root_tile_fill = fill;
ps->root_tile_paint.pixmap = pixmap;
#ifdef CONFIG_OPENGL
if (BKEND_GLX == ps->o.backend)
return paint_bind_tex(ps, &ps->root_tile_paint, 0, 0, true, 0, ps->vis, false);
#endif
return true;
}
/**
* Paint root window content.
*/
static void paint_root(session_t *ps, const region_t *reg_paint) {
// If there is no root tile pixmap, try getting one.
// If that fails, give up.
if (!ps->root_tile_paint.pixmap && !get_root_tile(ps))
return;
paint_region(ps, NULL, 0, 0, ps->root_width, ps->root_height, 1.0, reg_paint,
ps->root_tile_paint.pict);
}
/**
* Generate shadow <code>Picture</code> for a window.
*/
static bool win_build_shadow(session_t *ps, struct managed_win *w, double opacity) {
const int width = w->widthb;
const int height = w->heightb;
// log_trace("(): building shadow for %s %d %d", w->name, width, height);
xcb_image_t *shadow_image = NULL;
xcb_pixmap_t shadow_pixmap = XCB_NONE, shadow_pixmap_argb = XCB_NONE;
xcb_render_picture_t shadow_picture = XCB_NONE, shadow_picture_argb = XCB_NONE;
xcb_gcontext_t gc = XCB_NONE;
shadow_image = make_shadow(ps->c, ps->gaussian_map, opacity, width, height);
if (!shadow_image) {
log_error("failed to make shadow");
return XCB_NONE;
}
shadow_pixmap =
x_create_pixmap(ps->c, 8, ps->root, shadow_image->width, shadow_image->height);
shadow_pixmap_argb =
x_create_pixmap(ps->c, 32, ps->root, shadow_image->width, shadow_image->height);
if (!shadow_pixmap || !shadow_pixmap_argb) {
log_error("failed to create shadow pixmaps");
goto shadow_picture_err;
}
shadow_picture = x_create_picture_with_standard_and_pixmap(
ps->c, XCB_PICT_STANDARD_A_8, shadow_pixmap, 0, NULL);
shadow_picture_argb = x_create_picture_with_standard_and_pixmap(
ps->c, XCB_PICT_STANDARD_ARGB_32, shadow_pixmap_argb, 0, NULL);
if (!shadow_picture || !shadow_picture_argb)
goto shadow_picture_err;
gc = x_new_id(ps->c);
xcb_create_gc(ps->c, gc, shadow_pixmap, 0, NULL);
xcb_image_put(ps->c, shadow_pixmap, gc, shadow_image, 0, 0, 0);
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_SRC, ps->cshadow_picture,
shadow_picture, shadow_picture_argb, 0, 0, 0, 0, 0, 0,
shadow_image->width, shadow_image->height);
assert(!w->shadow_paint.pixmap);
w->shadow_paint.pixmap = shadow_pixmap_argb;
assert(!w->shadow_paint.pict);
w->shadow_paint.pict = shadow_picture_argb;
xcb_free_gc(ps->c, gc);
xcb_image_destroy(shadow_image);
xcb_free_pixmap(ps->c, shadow_pixmap);
xcb_render_free_picture(ps->c, shadow_picture);
return true;
shadow_picture_err:
if (shadow_image)
xcb_image_destroy(shadow_image);
if (shadow_pixmap)
xcb_free_pixmap(ps->c, shadow_pixmap);
if (shadow_pixmap_argb)
xcb_free_pixmap(ps->c, shadow_pixmap_argb);
if (shadow_picture)
xcb_render_free_picture(ps->c, shadow_picture);
if (shadow_picture_argb)
xcb_render_free_picture(ps->c, shadow_picture_argb);
if (gc)
xcb_free_gc(ps->c, gc);
return false;
}
/**
* Paint the shadow of a window.
*/
static inline void
win_paint_shadow(session_t *ps, struct managed_win *w, region_t *reg_paint) {
// Bind shadow pixmap to GLX texture if needed
paint_bind_tex(ps, &w->shadow_paint, 0, 0, false, 32, 0, false);
if (!paint_isvalid(ps, &w->shadow_paint)) {
log_error("Window %#010x is missing shadow data.", w->base.id);
return;
}
xcb_render_picture_t td = XCB_NONE;
bool should_clip =
(w->corner_radius > 0) && (!ps->o.wintype_option[w->window_type].full_shadow);
if (should_clip) {
if (ps->o.backend == BKEND_XRENDER || ps->o.backend == BKEND_XR_GLX_HYBRID) {
uint32_t max_ntraps = to_u32_checked(w->corner_radius);
xcb_render_trapezoid_t traps[4 * max_ntraps + 3];
uint32_t n = make_rounded_window_shape(
traps, max_ntraps, w->corner_radius, w->widthb, w->heightb);
td = x_create_picture_with_standard(
ps->c, ps->root, w->widthb, w->heightb,
XCB_PICT_STANDARD_ARGB_32, 0, 0);
xcb_render_color_t trans = {
.red = 0, .blue = 0, .green = 0, .alpha = 0};
const xcb_rectangle_t rect = {.x = 0,
.y = 0,
.width = to_u16_checked(w->widthb),
.height = to_u16_checked(w->heightb)};
xcb_render_fill_rectangles(ps->c, XCB_RENDER_PICT_OP_SRC, td,
trans, 1, &rect);
auto solid = solid_picture(ps->c, ps->root, false, 1, 0, 0, 0);
xcb_render_trapezoids(
ps->c, XCB_RENDER_PICT_OP_OVER, solid, td,
x_get_pictfmt_for_standard(ps->c, XCB_PICT_STANDARD_A_8), 0,
0, n, traps);
xcb_render_free_picture(ps->c, solid);
} else {
// Not implemented
}
}
clip_t clip = {
.pict = td,
.x = -(w->shadow_dx),
.y = -(w->shadow_dy),
};
render(ps, 0, 0, w->g.x + w->shadow_dx, w->g.y + w->shadow_dy, w->shadow_width,
w->shadow_height, w->widthb, w->heightb, w->shadow_opacity, true, false, 0,
w->shadow_paint.pict, w->shadow_paint.ptex, reg_paint, NULL,
should_clip ? &clip : NULL);
if (td) {
xcb_render_free_picture(ps->c, td);
}
}
/**
* @brief Blur an area on a buffer.
*
* @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 blur_kerns blur kernels, ending with a NULL, guaranteed to have at
* least one kernel
* @param reg_clip a clipping region to be applied on intermediate buffers
*
* @return true if successful, false otherwise
*/
static bool
xr_blur_dst(session_t *ps, xcb_render_picture_t tgt_buffer, int16_t x, int16_t y,
uint16_t wid, uint16_t hei, struct x_convolution_kernel **blur_kerns,
int nkernels, const region_t *reg_clip, xcb_render_picture_t rounded) {
assert(blur_kerns);
assert(blur_kerns[0]);
// Directly copying from tgt_buffer to it does not work, so we create a
// Picture in the middle.
xcb_render_picture_t tmp_picture =
x_create_picture_with_visual(ps->c, ps->root, wid, hei, ps->vis, 0, NULL);
if (!tmp_picture) {
log_error("Failed to build intermediate Picture.");
return false;
}
if (reg_clip && tmp_picture)
x_set_picture_clip_region(ps->c, tmp_picture, 0, 0, reg_clip);
xcb_render_picture_t src_pict = tgt_buffer, dst_pict = tmp_picture;
for (int i = 0; i < nkernels; ++i) {
xcb_render_fixed_t *convolution_blur = blur_kerns[i]->kernel;
// `x / 65536.0` converts from X fixed point to double
int kwid = (int)((double)convolution_blur[0] / 65536.0),
khei = (int)((double)convolution_blur[1] / 65536.0);
bool rd_from_tgt = (tgt_buffer == src_pict);
// Copy from source picture to destination. The filter must
// be applied on source picture, to get the nearby pixels outside the
// window.
xcb_render_set_picture_filter(
ps->c, src_pict, strlen(XRFILTER_CONVOLUTION), XRFILTER_CONVOLUTION,
(uint32_t)(kwid * khei + 2), convolution_blur);
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_SRC, src_pict, XCB_NONE,
dst_pict, (rd_from_tgt ? x : 0),
(rd_from_tgt ? y : 0), 0, 0, (rd_from_tgt ? 0 : x),
(rd_from_tgt ? 0 : y), wid, hei);
xrfilter_reset(ps, src_pict);
{
xcb_render_picture_t tmp = src_pict;
src_pict = dst_pict;
dst_pict = tmp;
}
}
if (src_pict != tgt_buffer)
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_OVER, src_pict, rounded,
tgt_buffer, 0, 0, 0, 0, x, y, wid, hei);
free_picture(ps->c, &tmp_picture);
return true;
}
/**
* Blur the background of a window.
*/
static inline void
win_blur_background(session_t *ps, struct managed_win *w, xcb_render_picture_t tgt_buffer,
const region_t *reg_paint) {
const int16_t x = w->g.x;
const int16_t y = w->g.y;
const auto wid = to_u16_checked(w->widthb);
const auto hei = to_u16_checked(w->heightb);
const int cr = w ? w->corner_radius : 0;
double factor_center = 1.0;
// Adjust blur strength according to window opacity, to make it appear
// better during fading
if (!ps->o.blur_background_fixed) {
double pct = 1.0 - w->opacity * (1.0 - 1.0 / 9.0);
factor_center = pct * 8.0 / (1.1 - pct);
}
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID: {
// Normalize blur kernels
for (int i = 0; i < ps->o.blur_kernel_count; i++) {
// Note: `x * 65536` converts double `x` to a X fixed point
// representation. `x / 65536` is the other way.
auto kern_src = ps->o.blur_kerns[i];
auto kern_dst = ps->blur_kerns_cache[i];
assert(!kern_dst || (kern_src->w == kern_dst->kernel[0] / 65536 &&
kern_src->h == kern_dst->kernel[1] / 65536));
// Skip for fixed factor_center if the cache exists already
if (ps->o.blur_background_fixed && kern_dst) {
continue;
}
x_create_convolution_kernel(kern_src, factor_center,
&ps->blur_kerns_cache[i]);
}
xcb_render_picture_t td = XCB_NONE;
if (cr) {
uint32_t max_ntraps = to_u32_checked(cr);
xcb_render_trapezoid_t traps[4 * max_ntraps + 3];
uint32_t n =
make_rounded_window_shape(traps, max_ntraps, cr, wid, hei);
td = x_create_picture_with_standard(
ps->c, ps->root, wid, hei, XCB_PICT_STANDARD_ARGB_32, 0, 0);
xcb_render_color_t trans = {
.red = 0, .blue = 0, .green = 0, .alpha = 0};
const xcb_rectangle_t rect = {.x = 0,
.y = 0,
.width = to_u16_checked(wid),
.height = to_u16_checked(hei)};
xcb_render_fill_rectangles(ps->c, XCB_RENDER_PICT_OP_SRC, td,
trans, 1, &rect);
auto solid = solid_picture(ps->c, ps->root, false, 1, 0, 0, 0);
xcb_render_trapezoids(
ps->c, XCB_RENDER_PICT_OP_OVER, solid, td,
x_get_pictfmt_for_standard(ps->c, XCB_PICT_STANDARD_A_8), 0,
0, n, traps);
xcb_render_free_picture(ps->c, solid);
}
// Minimize the region we try to blur, if the window itself is not
// opaque, only the frame is.
region_t reg_blur = win_get_bounding_shape_global_by_val(w);
if (w->mode == WMODE_FRAME_TRANS && !ps->o.force_win_blend) {
region_t reg_noframe;
pixman_region32_init(&reg_noframe);
win_get_region_noframe_local(w, &reg_noframe);
pixman_region32_translate(&reg_noframe, w->g.x, w->g.y);
pixman_region32_subtract(&reg_blur, &reg_blur, &reg_noframe);
pixman_region32_fini(&reg_noframe);
}
// Translate global coordinates to local ones
pixman_region32_translate(&reg_blur, -x, -y);
xr_blur_dst(ps, tgt_buffer, x, y, wid, hei, ps->blur_kerns_cache,
ps->o.blur_kernel_count, &reg_blur, td);
if (td) {
xcb_render_free_picture(ps->c, td);
}
pixman_region32_clear(&reg_blur);
} break;
#ifdef CONFIG_OPENGL
case BKEND_GLX:
// TODO(compton) Handle frame opacity
glx_blur_dst(ps, x, y, wid, hei, (float)ps->psglx->z - 0.5f,
(float)factor_center, reg_paint, &w->glx_blur_cache);
break;
#endif
default: assert(0);
}
#ifndef CONFIG_OPENGL
(void)reg_paint;
#endif
}
/// paint all windows
/// region = ??
/// region_real = the damage region
void paint_all(session_t *ps, struct managed_win *t, bool ignore_damage) {
if (ps->o.xrender_sync_fence || (ps->drivers & DRIVER_NVIDIA)) {
if (ps->xsync_exists && !x_fence_sync(ps->c, ps->sync_fence)) {
log_error("x_fence_sync failed, xrender-sync-fence will be "
"disabled from now on.");
xcb_sync_destroy_fence(ps->c, ps->sync_fence);
ps->sync_fence = XCB_NONE;
ps->o.xrender_sync_fence = false;
ps->xsync_exists = false;
}
}
region_t region;
pixman_region32_init(&region);
int buffer_age = get_buffer_age(ps);
if (buffer_age == -1 || buffer_age > ps->ndamage || ignore_damage) {
pixman_region32_copy(&region, &ps->screen_reg);
} else {
for (int i = 0; i < get_buffer_age(ps); i++) {
auto curr = ((ps->damage - ps->damage_ring) + i) % ps->ndamage;
pixman_region32_union(&region, &region, &ps->damage_ring[curr]);
}
}
if (!pixman_region32_not_empty(&region)) {
return;
}
#ifdef DEBUG_REPAINT
static struct timespec last_paint = {0};
#endif
if (ps->o.resize_damage > 0) {
resize_region_in_place(&region, ps->o.resize_damage, ps->o.resize_damage);
}
// Remove the damaged area out of screen
pixman_region32_intersect(&region, &region, &ps->screen_reg);
if (!paint_isvalid(ps, &ps->tgt_buffer)) {
if (!ps->tgt_buffer.pixmap) {
free_paint(ps, &ps->tgt_buffer);
ps->tgt_buffer.pixmap =
x_create_pixmap(ps->c, (uint8_t)ps->depth, ps->root,
ps->root_width, ps->root_height);
if (ps->tgt_buffer.pixmap == XCB_NONE) {
log_fatal("Failed to allocate a screen-sized pixmap for"
"painting");
exit(1);
}
}
if (BKEND_GLX != ps->o.backend)
ps->tgt_buffer.pict = x_create_picture_with_visual_and_pixmap(
ps->c, ps->vis, ps->tgt_buffer.pixmap, 0, 0);
}
if (BKEND_XRENDER == ps->o.backend) {
x_set_picture_clip_region(ps->c, ps->tgt_picture, 0, 0, &region);
}
#ifdef CONFIG_OPENGL
if (bkend_use_glx(ps)) {
ps->psglx->z = 0.0;
}
#endif
region_t reg_tmp, *reg_paint;
pixman_region32_init(&reg_tmp);
if (t) {
// Calculate the region upon which the root window is to be
// painted based on the ignore region of the lowest window, if
// available
pixman_region32_subtract(&reg_tmp, &region, t->reg_ignore);
reg_paint = &reg_tmp;
} else {
reg_paint = &region;
}
// Region on screen we don't want any shadows on
region_t reg_shadow_clip;
pixman_region32_init(&reg_shadow_clip);
set_tgt_clip(ps, reg_paint);
paint_root(ps, reg_paint);
// Windows are sorted from bottom to top
// Each window has a reg_ignore, which is the region obscured by all the
// windows on top of that window. This is used to reduce the number of
// pixels painted.
//
// Whether this is beneficial is to be determined XXX
for (auto w = t; w; w = w->prev_trans) {
region_t bshape_no_corners =
win_get_bounding_shape_global_without_corners_by_val(w);
region_t bshape_corners = win_get_bounding_shape_global_by_val(w);
// Painting shadow
if (w->shadow) {
// Lazy shadow building
if (!w->shadow_paint.pixmap)
if (!win_build_shadow(ps, w, 1))
log_error("build shadow failed");
// Shadow doesn't need to be painted underneath the body
// of the windows above. Because no one can see it
pixman_region32_subtract(&reg_tmp, &region, w->reg_ignore);
// Mask out the region we don't want shadow on
if (pixman_region32_not_empty(&ps->shadow_exclude_reg))
pixman_region32_subtract(&reg_tmp, &reg_tmp,
&ps->shadow_exclude_reg);
if (pixman_region32_not_empty(&reg_shadow_clip)) {
pixman_region32_subtract(&reg_tmp, &reg_tmp, &reg_shadow_clip);
}
// Might be worth while to crop the region to shadow
// border
assert(w->shadow_width >= 0 && w->shadow_height >= 0);
pixman_region32_intersect_rect(
&reg_tmp, &reg_tmp, w->g.x + w->shadow_dx, w->g.y + w->shadow_dy,
(uint)w->shadow_width, (uint)w->shadow_height);
// Mask out the body of the window from the shadow if
// needed Doing it here instead of in make_shadow() for
// saving GPU power and handling shaped windows (XXX
// unconfirmed)
if (!ps->o.wintype_option[w->window_type].full_shadow)
pixman_region32_subtract(&reg_tmp, &reg_tmp, &bshape_no_corners);
if (ps->o.xinerama_shadow_crop && w->xinerama_scr >= 0 &&
w->xinerama_scr < ps->xinerama_nscrs)
// There can be a window where number of screens
// is updated, but the screen number attached to
// the windows have not.
//
// Window screen number will be updated
// eventually, so here we just check to make sure
// we don't access out of bounds.
pixman_region32_intersect(
&reg_tmp, &reg_tmp,
&ps->xinerama_scr_regs[w->xinerama_scr]);
// Detect if the region is empty before painting
if (pixman_region32_not_empty(&reg_tmp)) {
set_tgt_clip(ps, &reg_tmp);
win_paint_shadow(ps, w, &reg_tmp);
}
}
// Only clip shadows above visible windows
if (w->opacity * MAX_ALPHA >= 1) {
if (w->clip_shadow_above) {
// Add window bounds to shadow-clip region
pixman_region32_union(&reg_shadow_clip, &reg_shadow_clip,
&bshape_corners);
} else {
// Remove overlapping window bounds from shadow-clip
// region
pixman_region32_subtract(
&reg_shadow_clip, &reg_shadow_clip, &bshape_corners);
}
}
// Calculate the paint region based on the reg_ignore of the current
// window and its bounding region.
// Remember, reg_ignore is the union of all windows above the current
// window.
pixman_region32_subtract(&reg_tmp, &region, w->reg_ignore);
pixman_region32_intersect(&reg_tmp, &reg_tmp, &bshape_corners);
pixman_region32_fini(&bshape_corners);
pixman_region32_fini(&bshape_no_corners);
if (pixman_region32_not_empty(&reg_tmp)) {
set_tgt_clip(ps, &reg_tmp);
#ifdef CONFIG_OPENGL
// If rounded corners backup the region first
if (w->corner_radius > 0 && ps->o.backend == BKEND_GLX) {
const int16_t x = w->g.x;
const int16_t y = w->g.y;
const auto wid = to_u16_checked(w->widthb);
const auto hei = to_u16_checked(w->heightb);
glx_bind_texture(ps, &w->glx_texture_bg, x, y, wid, hei);
}
#endif
// Blur window background
if (w->blur_background &&
(w->mode == WMODE_TRANS ||
(ps->o.blur_background_frame && w->mode == WMODE_FRAME_TRANS) ||
ps->o.force_win_blend)) {
win_blur_background(ps, w, ps->tgt_buffer.pict, &reg_tmp);
}
// Painting the window
paint_one(ps, w, &reg_tmp);
#ifdef CONFIG_OPENGL
// Rounded corners for XRender is implemented inside render()
// Round window corners
if (w->corner_radius > 0 && ps->o.backend == BKEND_GLX) {
const auto wid = to_u16_checked(w->widthb);
const auto hei = to_u16_checked(w->heightb);
glx_round_corners_dst(ps, w, w->glx_texture_bg, w->g.x,
w->g.y, wid, hei,
(float)ps->psglx->z - 0.5F,
(float)w->corner_radius, &reg_tmp);
}
#endif
}
}
// Free up all temporary regions
pixman_region32_fini(&reg_tmp);
pixman_region32_fini(&reg_shadow_clip);
// Move the head of the damage ring
ps->damage = ps->damage - 1;
if (ps->damage < ps->damage_ring) {
ps->damage = ps->damage_ring + ps->ndamage - 1;
}
pixman_region32_clear(ps->damage);
// Do this as early as possible
set_tgt_clip(ps, &ps->screen_reg);
if (ps->o.vsync) {
// Make sure all previous requests are processed to achieve best
// effect
x_sync(ps->c);
#ifdef CONFIG_OPENGL
if (glx_has_context(ps)) {
if (ps->o.vsync_use_glfinish)
glFinish();
else
glFlush();
glXWaitX();
}
#endif
}
if (ps->vsync_wait) {
ps->vsync_wait(ps);
}
auto rwidth = to_u16_checked(ps->root_width);
auto rheight = to_u16_checked(ps->root_height);
switch (ps->o.backend) {
case BKEND_XRENDER:
if (ps->o.monitor_repaint) {
// Copy the screen content to a new picture, and highlight the
// paint region. This is not very efficient, but since it's for
// debug only, we don't really care
// First we create a new picture, and copy content from the buffer
// to it
auto pictfmt = x_get_pictform_for_visual(ps->c, ps->vis);
xcb_render_picture_t new_pict = x_create_picture_with_pictfmt(
ps->c, ps->root, rwidth, rheight, pictfmt, 0, NULL);
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_SRC,
ps->tgt_buffer.pict, XCB_NONE, new_pict, 0,
0, 0, 0, 0, 0, rwidth, rheight);
// Next, we set the region of paint and highlight it
x_set_picture_clip_region(ps->c, new_pict, 0, 0, &region);
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_OVER, ps->white_picture,
ps->alpha_picts[MAX_ALPHA / 2], new_pict, 0,
0, 0, 0, 0, 0, rwidth, rheight);
// Finally, clear clip regions of new_pict and the screen, and put
// the whole thing on screen
x_set_picture_clip_region(ps->c, new_pict, 0, 0, &ps->screen_reg);
x_set_picture_clip_region(ps->c, ps->tgt_picture, 0, 0, &ps->screen_reg);
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_SRC, new_pict,
XCB_NONE, ps->tgt_picture, 0, 0, 0, 0, 0, 0,
rwidth, rheight);
xcb_render_free_picture(ps->c, new_pict);
} else
xcb_render_composite(ps->c, XCB_RENDER_PICT_OP_SRC,
ps->tgt_buffer.pict, XCB_NONE, ps->tgt_picture,
0, 0, 0, 0, 0, 0, rwidth, rheight);
break;
#ifdef CONFIG_OPENGL
case BKEND_XR_GLX_HYBRID:
x_sync(ps->c);
if (ps->o.vsync_use_glfinish)
glFinish();
else
glFlush();
glXWaitX();
assert(ps->tgt_buffer.pixmap);
paint_bind_tex(ps, &ps->tgt_buffer, ps->root_width, ps->root_height,
false, ps->depth, ps->vis, !ps->o.glx_no_rebind_pixmap);
if (ps->o.vsync_use_glfinish)
glFinish();
else
glFlush();
glXWaitX();
glx_render(ps, ps->tgt_buffer.ptex, 0, 0, 0, 0, ps->root_width,
ps->root_height, 0, 1.0, false, false, &region, NULL);
fallthrough();
case BKEND_GLX: glXSwapBuffers(ps->dpy, get_tgt_window(ps)); break;
#endif
default: assert(0);
}
x_sync(ps->c);
#ifdef CONFIG_OPENGL
if (glx_has_context(ps)) {
glFlush();
glXWaitX();
}
#endif
#ifdef DEBUG_REPAINT
struct timespec now = get_time_timespec();
struct timespec diff = {0};
timespec_subtract(&diff, &now, &last_paint);
log_trace("[ %5ld:%09ld ] ", diff.tv_sec, diff.tv_nsec);
last_paint = now;
log_trace("paint:");
for (win *w = t; w; w = w->prev_trans)
log_trace(" %#010lx", w->id);
#endif
// Free the paint region
pixman_region32_fini(&region);
}
/**
* Query needed X Render / OpenGL filters to check for their existence.
*/
static bool xr_init_blur(session_t *ps) {
// Query filters
xcb_render_query_filters_reply_t *pf = xcb_render_query_filters_reply(
ps->c, xcb_render_query_filters(ps->c, get_tgt_window(ps)), NULL);
if (pf) {
xcb_str_iterator_t iter = xcb_render_query_filters_filters_iterator(pf);
for (; iter.rem; xcb_str_next(&iter)) {
int len = xcb_str_name_length(iter.data);
char *name = xcb_str_name(iter.data);
// Check for the convolution filter
if (strlen(XRFILTER_CONVOLUTION) == len &&
!memcmp(XRFILTER_CONVOLUTION, name, strlen(XRFILTER_CONVOLUTION)))
ps->xrfilter_convolution_exists = true;
}
free(pf);
}
// Turn features off if any required filter is not present
if (!ps->xrfilter_convolution_exists) {
log_error("Xrender convolution filter "
"unsupported by your X server. "
"Background blur is not possible.");
return false;
}
return true;
}
/**
* Pregenerate alpha pictures.
*/
static bool init_alpha_picts(session_t *ps) {
ps->alpha_picts = ccalloc(MAX_ALPHA + 1, xcb_render_picture_t);
for (int i = 0; i <= MAX_ALPHA; ++i) {
double o = (double)i / MAX_ALPHA;
ps->alpha_picts[i] = solid_picture(ps->c, ps->root, false, o, 0, 0, 0);
if (ps->alpha_picts[i] == XCB_NONE)
return false;
}
return true;
}
bool init_render(session_t *ps) {
if (ps->o.backend == BKEND_DUMMY) {
return false;
}
// Initialize OpenGL as early as possible
#ifdef CONFIG_OPENGL
glxext_init(ps->dpy, ps->scr);
#endif
if (bkend_use_glx(ps)) {
#ifdef CONFIG_OPENGL
if (!glx_init(ps, true))
return false;
#else
log_error("GLX backend support not compiled in.");
return false;
#endif
}
// Initialize VSync
if (!vsync_init(ps)) {
return false;
}
// Initialize window GL shader
if (BKEND_GLX == ps->o.backend && ps->o.glx_fshader_win_str) {
#ifdef CONFIG_OPENGL
if (!glx_load_prog_main(NULL, ps->o.glx_fshader_win_str, &ps->glx_prog_win))
return false;
#else
log_error("GLSL supported not compiled in, can't load "
"shader.");
return false;
#endif
}
if (!init_alpha_picts(ps)) {
log_error("Failed to init alpha pictures.");
return false;
}
// Blur filter
if (ps->o.blur_method && ps->o.blur_method != BLUR_METHOD_KERNEL) {
log_warn("Old backends only support blur method \"kernel\". Your blur "
"setting will not be applied");
ps->o.blur_method = BLUR_METHOD_NONE;
}
if (ps->o.blur_method == BLUR_METHOD_KERNEL) {
ps->blur_kerns_cache =
ccalloc(ps->o.blur_kernel_count, struct x_convolution_kernel *);
bool ret = false;
if (ps->o.backend == BKEND_GLX) {
#ifdef CONFIG_OPENGL
ret = glx_init_blur(ps);
#else
assert(false);
#endif
} else {
ret = xr_init_blur(ps);
}
if (!ret) {
return ret;
}
}
ps->black_picture = solid_picture(ps->c, ps->root, true, 1, 0, 0, 0);
ps->white_picture = solid_picture(ps->c, ps->root, true, 1, 1, 1, 1);
if (ps->black_picture == XCB_NONE || ps->white_picture == XCB_NONE) {
log_error("Failed to create solid xrender pictures.");
return false;
}
// Generates another Picture for shadows if the color is modified by
// user
if (ps->o.shadow_red == 0 && ps->o.shadow_green == 0 && ps->o.shadow_blue == 0) {
ps->cshadow_picture = ps->black_picture;
} else {
ps->cshadow_picture = solid_picture(ps->c, ps->root, true, 1, ps->o.shadow_red,
ps->o.shadow_green, ps->o.shadow_blue);
if (ps->cshadow_picture == XCB_NONE) {
log_error("Failed to create shadow picture.");
return false;
}
}
// Initialize our rounded corners fragment shader
if (ps->o.corner_radius > 0 && ps->o.backend == BKEND_GLX) {
#ifdef CONFIG_OPENGL
if (!glx_init_rounded_corners(ps)) {
log_error("Failed to init rounded corners shader.");
return false;
}
#else
assert(false);
#endif
}
return true;
}
/**
* Free root tile related things.
*/
void free_root_tile(session_t *ps) {
free_picture(ps->c, &ps->root_tile_paint.pict);
#ifdef CONFIG_OPENGL
free_texture(ps, &ps->root_tile_paint.ptex);
#else
assert(!ps->root_tile_paint.ptex);
#endif
if (ps->root_tile_fill) {
xcb_free_pixmap(ps->c, ps->root_tile_paint.pixmap);
ps->root_tile_paint.pixmap = XCB_NONE;
}
ps->root_tile_paint.pixmap = XCB_NONE;
ps->root_tile_fill = false;
}
void deinit_render(session_t *ps) {
// Free alpha_picts
for (int i = 0; i <= MAX_ALPHA; ++i)
free_picture(ps->c, &ps->alpha_picts[i]);
free(ps->alpha_picts);
ps->alpha_picts = NULL;
// Free cshadow_picture and black_picture
if (ps->cshadow_picture == ps->black_picture)
ps->cshadow_picture = XCB_NONE;
else
free_picture(ps->c, &ps->cshadow_picture);
free_picture(ps->c, &ps->black_picture);
free_picture(ps->c, &ps->white_picture);
// Free other X resources
free_root_tile(ps);
#ifdef CONFIG_OPENGL
free(ps->root_tile_paint.fbcfg);
if (bkend_use_glx(ps)) {
glx_destroy(ps);
}
#endif
if (ps->o.blur_method != BLUR_METHOD_NONE) {
for (int i = 0; i < ps->o.blur_kernel_count; i++) {
free(ps->blur_kerns_cache[i]);
}
free(ps->blur_kerns_cache);
}
}
// vim: set ts=8 sw=8 noet :
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