mirror of https://github.com/yshui/picom.git
287 lines
7.1 KiB
C
287 lines
7.1 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Compton - a compositor for X11
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*
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* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
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*
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* Copyright (c) 2011-2013, Christopher Jeffrey
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* Copyright (c) 2018, Yuxuan Shui <yshuiv7@gmail.com>
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*
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* See LICENSE-mit for more information.
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*
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*/
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#pragma once
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// === Options ===
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// Debug options, enable them using -D in CFLAGS
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// #define DEBUG_REPAINT 1
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// #define DEBUG_EVENTS 1
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// #define DEBUG_RESTACK 1
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// #define DEBUG_WINMATCH 1
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// #define DEBUG_C2 1
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// #define DEBUG_GLX_DEBUG_CONTEXT 1
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#define MAX_ALPHA (255)
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// === Includes ===
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// For some special functions
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#include <assert.h>
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#include <stdbool.h>
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#include <sys/time.h>
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#include <time.h>
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#include <X11/Xlib.h>
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#include <ev.h>
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#include <pixman.h>
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#include <xcb/render.h>
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#include <xcb/sync.h>
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#include <xcb/xproto.h>
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#include "uthash_extra.h"
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#ifdef CONFIG_OPENGL
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#include "backend/gl/glx.h"
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#endif
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// X resource checker
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#ifdef DEBUG_XRC
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#include "xrescheck.h"
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#endif
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// FIXME This list of includes should get shorter
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#include "backend/backend.h"
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#include "backend/driver.h"
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#include "compiler.h"
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#include "config.h"
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#include "list.h"
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#include "region.h"
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#include "render.h"
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#include "statistics.h"
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#include "types.h"
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#include "utils.h"
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#include "win_defs.h"
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#include "x.h"
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// === Constants ===0
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#define NS_PER_SEC 1000000000L
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#define US_PER_SEC 1000000L
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#define MS_PER_SEC 1000
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/// @brief Maximum OpenGL FBConfig depth.
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#define OPENGL_MAX_DEPTH 32
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/// @brief Maximum OpenGL buffer age.
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#define CGLX_MAX_BUFFER_AGE 5
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// Window flags
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// === Types ===
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typedef struct glx_fbconfig glx_fbconfig_t;
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struct glx_session;
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struct atom;
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struct conv;
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#ifdef CONFIG_OPENGL
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#ifdef DEBUG_GLX_DEBUG_CONTEXT
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typedef GLXContext (*f_glXCreateContextAttribsARB)(Display *dpy, GLXFBConfig config,
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GLXContext share_context, Bool direct,
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const int *attrib_list);
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typedef void (*GLDEBUGPROC)(GLenum source, GLenum type, GLuint id, GLenum severity,
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GLsizei length, const GLchar *message, GLvoid *userParam);
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typedef void (*f_DebugMessageCallback)(GLDEBUGPROC, void *userParam);
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#endif
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typedef struct glx_prog_main {
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/// GLSL program.
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GLuint prog;
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/// Location of uniform "opacity" in window GLSL program.
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GLint unifm_opacity;
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/// Location of uniform "invert_color" in blur GLSL program.
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GLint unifm_invert_color;
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/// Location of uniform "tex" in window GLSL program.
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GLint unifm_tex;
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/// Location of uniform "time" in window GLSL program.
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GLint unifm_time;
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} glx_prog_main_t;
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#define GLX_PROG_MAIN_INIT \
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{ \
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.prog = 0, .unifm_opacity = -1, .unifm_invert_color = -1, \
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.unifm_tex = -1, .unifm_time = -1 \
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}
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#else
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struct glx_prog_main {};
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#endif
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#define PAINT_INIT \
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{ .pixmap = XCB_NONE, .pict = XCB_NONE }
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/// Linked list type of atoms.
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typedef struct _latom {
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xcb_atom_t atom;
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struct _latom *next;
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} latom_t;
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struct shader_info {
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char *key;
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char *source;
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void *backend_shader;
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uint64_t attributes;
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UT_hash_handle hh;
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};
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struct damage_ring {
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/// Cache a xfixes region so we don't need to allocate it every time.
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/// A workaround for yshui/picom#301
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xcb_xfixes_region_t x_region;
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/// The region needs to painted on next paint.
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int cursor;
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/// The region damaged on the last paint.
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region_t *damages;
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/// Number of damage regions we track
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int count;
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};
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struct session;
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/// Enumeration for window event hints.
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typedef enum { WIN_EVMODE_UNKNOWN, WIN_EVMODE_FRAME, WIN_EVMODE_CLIENT } win_evmode_t;
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struct wintype_info {
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const char *name;
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const char *atom;
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};
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extern const struct wintype_info WINTYPES[NUM_WINTYPES];
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extern session_t *ps_g;
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void ev_xcb_error(session_t *ps, xcb_generic_error_t *err);
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// === Functions ===
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/**
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* Subtracting two struct timespec values.
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*
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* Taken from glibc manual.
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*
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* Subtract the `struct timespec' values X and Y,
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* storing the result in RESULT.
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* Return 1 if the difference is negative, otherwise 0.
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*/
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static inline int
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timespec_subtract(struct timespec *result, struct timespec *x, struct timespec *y) {
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/* Perform the carry for the later subtraction by updating y. */
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if (x->tv_nsec < y->tv_nsec) {
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long nsec = (y->tv_nsec - x->tv_nsec) / NS_PER_SEC + 1;
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y->tv_nsec -= NS_PER_SEC * nsec;
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y->tv_sec += nsec;
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}
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if (x->tv_nsec - y->tv_nsec > NS_PER_SEC) {
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long nsec = (x->tv_nsec - y->tv_nsec) / NS_PER_SEC;
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y->tv_nsec += NS_PER_SEC * nsec;
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y->tv_sec -= nsec;
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}
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/* Compute the time remaining to wait.
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tv_nsec is certainly positive. */
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result->tv_sec = x->tv_sec - y->tv_sec;
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result->tv_nsec = x->tv_nsec - y->tv_nsec;
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/* Return 1 if result is negative. */
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return x->tv_sec < y->tv_sec;
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}
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/**
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* Get current time in struct timeval.
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*/
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static inline struct timeval get_time_timeval(void) {
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struct timeval tv = {0, 0};
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gettimeofday(&tv, NULL);
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// Return a time of all 0 if the call fails
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return tv;
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}
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/**
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* Get current time in struct timespec.
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*
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* Note its starting time is unspecified.
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*/
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static inline struct timespec get_time_timespec(void) {
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struct timespec tm = {0, 0};
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clock_gettime(CLOCK_MONOTONIC, &tm);
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// Return a time of all 0 if the call fails
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return tm;
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}
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struct options *session_get_options(session_t *ps);
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/**
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* Check if current backend uses GLX.
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*/
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static inline bool bkend_use_glx(session_t *ps) {
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auto backend = session_get_options(ps)->backend;
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return backend == BKEND_GLX || backend == BKEND_XR_GLX_HYBRID;
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}
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/**
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* Determine if a window has a specific property.
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*
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* @param ps current session
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* @param w window to check
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* @param atom atom of property to check
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* @return true if it has the attribute, false otherwise
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*/
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static inline bool wid_has_prop(xcb_connection_t *c, xcb_window_t w, xcb_atom_t atom) {
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auto r = xcb_get_property_reply(
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c, xcb_get_property(c, 0, w, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, 0), NULL);
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if (!r) {
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return false;
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}
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auto rtype = r->type;
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free(r);
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if (rtype != XCB_NONE) {
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return true;
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}
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return false;
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}
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void force_repaint(session_t *ps);
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/**
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* Set a <code>bool</code> array of all wintypes to true.
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*/
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static inline void wintype_arr_enable(bool arr[]) {
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wintype_t i;
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for (i = 0; i < NUM_WINTYPES; ++i) {
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arr[i] = true;
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}
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}
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static inline void damage_ring_advance(struct damage_ring *ring) {
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ring->cursor--;
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if (ring->cursor < 0) {
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ring->cursor += ring->count;
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}
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pixman_region32_clear(&ring->damages[ring->cursor]);
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}
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static inline void damage_ring_collect(const struct damage_ring *ring, region_t *all_region,
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region_t *region, int buffer_age) {
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if (buffer_age == -1 || buffer_age > ring->count) {
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pixman_region32_copy(region, all_region);
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} else {
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for (int i = 0; i < buffer_age; i++) {
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auto curr = (ring->cursor + i) % ring->count;
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pixman_region32_union(region, region, &ring->damages[curr]);
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}
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pixman_region32_intersect(region, region, all_region);
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}
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} |