Feature: OpenGL backend
- Add experimental OpenGL backend (--opengl). --blur-background is currently not possible with this backend, because I'm still trying to find a proper way to do blur with OpenGL. Flipping backend on-the-fly is really hard, so it isn't supported right now. No configuration file option exists to enable this, because it isn't stable enough. - Add `opengl-swc` VSync method that uses SGI_swap_control to control buffer swap, with OpenGL backend. (#7) - Fix a potential read-from-freed-memory issue in paint_all(). - Correctly reattach GLX context after fork. - Dump error text in error(). Add GLX error code handling. - Code clean-up. - Known issues: Region operations take a lot of time in glx_render(). I'm hesitating about what to do.
This commit is contained in:
Richard Grenville
parent
4bc3de81ab
commit
8ffcf1c1e8
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@ -33,8 +33,8 @@ install_manifest.txt
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*~
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# Misc files
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core
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*.core
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/core
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/*.core
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oprofile_data/
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compton.plist
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callgrind.out.*
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@ -42,3 +42,4 @@ man/*.html
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man/*.1
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doxygen/
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.clang_complete
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/src/backtrace-symbols.[ch]
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12
Makefile
12
Makefile
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@ -47,6 +47,7 @@ ifeq "$(NO_VSYNC_OPENGL)" ""
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CFG += -DCONFIG_VSYNC_OPENGL
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# -lGL must precede some other libraries, or it segfaults on FreeBSD (#74)
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LIBS := -lGL $(LIBS)
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OBJS += opengl.o
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endif
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# ==== D-Bus ====
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@ -67,7 +68,16 @@ COMPTON_VERSION ?= git-$(shell git describe --always --dirty)-$(shell git log -1
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CFG += -DCOMPTON_VERSION="\"$(COMPTON_VERSION)\""
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LDFLAGS ?= -Wl,-O1 -Wl,--as-needed
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CFLAGS ?= -DNDEBUG -O2 -D_FORTIFY_SOURCE=2
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ifeq "$(DEV)" ""
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CFLAGS ?= -DNDEBUG -O2 -D_FORTIFY_SOURCE=2
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else
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CC = clang
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export LD_ALTEXEC = /usr/bin/ld.gold
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OBJS += backtrace-symbols.o
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LIBS += -lbfd
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CFLAGS += -ggdb -Weverything -Wno-disabled-macro-expansion -Wno-padded -Wno-gnu
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endif
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LIBS += $(shell pkg-config --libs $(PACKAGES))
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INCS += $(shell pkg-config --cflags $(PACKAGES))
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172
src/common.h
172
src/common.h
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@ -130,6 +130,9 @@
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#error libXcomposite version unsupported
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#endif
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/// @brief Length of generic buffers.
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#define BUF_LEN 80
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#define ROUNDED_PERCENT 0.05
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#define ROUNDED_PIXELS 10
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@ -152,6 +155,9 @@
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#define XRFILTER_GUASSIAN "gaussian"
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#define XRFILTER_BINOMIAL "binomial"
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/// @brief Maximum OpenGL FBConfig depth.
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#define OPENGL_MAX_DEPTH 32
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// Window flags
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// Window size is changed
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@ -249,9 +255,18 @@ typedef enum {
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VSYNC_DRM,
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VSYNC_OPENGL,
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VSYNC_OPENGL_OML,
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VSYNC_OPENGL_SWC,
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NUM_VSYNC,
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} vsync_t;
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/// @brief Possible backends of compton.
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enum backend {
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BKEND_XRENDER,
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BKEND_GLX,
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};
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typedef struct _glx_texture glx_texture_t;
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#ifdef CONFIG_VSYNC_OPENGL
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typedef int (*f_WaitVideoSync) (int, int, unsigned *);
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typedef int (*f_GetVideoSync) (unsigned *);
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@ -259,15 +274,39 @@ typedef int (*f_GetVideoSync) (unsigned *);
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typedef Bool (*f_GetSyncValuesOML) (Display* dpy, GLXDrawable drawable, int64_t* ust, int64_t* msc, int64_t* sbc);
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typedef Bool (*f_WaitForMscOML) (Display* dpy, GLXDrawable drawable, int64_t target_msc, int64_t divisor, int64_t remainder, int64_t* ust, int64_t* msc, int64_t* sbc);
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typedef int (*f_SwapIntervalSGI) (int interval);
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typedef void (*f_BindTexImageEXT) (Display *display, GLXDrawable drawable, int buffer, const int *attrib_list);
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typedef void (*f_ReleaseTexImageEXT) (Display *display, GLXDrawable drawable, int buffer);
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struct glx_fbconfig {
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/// @brief Wrapper of a GLX FBConfig.
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typedef struct {
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GLXFBConfig cfg;
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GLint texture_fmt;
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GLint texture_tgts;
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bool y_inverted;
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} glx_fbconfig_t;
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/// @brief Wrapper of a binded GLX texture.
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struct _glx_texture {
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GLuint texture;
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GLXPixmap glpixmap;
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Pixmap pixmap;
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int width;
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int height;
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int depth;
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bool y_inverted;
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};
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#endif
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typedef struct {
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Pixmap pixmap;
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Picture pict;
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glx_texture_t *ptex;
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} paint_t;
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#define PAINT_INIT { .pixmap = None, .pict = None }
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typedef struct {
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int size;
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double *data;
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@ -293,6 +332,8 @@ typedef struct {
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/// The display name we used. NULL means we are using the value of the
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/// <code>DISPLAY</code> environment variable.
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char *display;
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/// The backend in use.
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enum backend backend;
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/// Whether to try to detect WM windows and mark them as focused.
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bool mark_wmwin_focused;
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/// Whether to mark override-redirect windows as focused.
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@ -434,8 +475,10 @@ typedef struct {
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// Damage root_damage;
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/// X Composite overlay window. Used if <code>--paint-on-overlay</code>.
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Window overlay;
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/// Whether the root tile is filled by compton.
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bool root_tile_fill;
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/// Picture of the root window background.
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Picture root_tile;
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paint_t root_tile_paint;
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/// A region of the size of the screen.
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XserverRegion screen_reg;
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/// Picture of root window. Destination of painting in no-DBE painting
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@ -488,6 +531,10 @@ typedef struct {
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/// Pointer to the <code>next</code> member of tail element of the error
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/// ignore linked list.
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ignore_t **ignore_tail;
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#ifdef CONFIG_VSYNC_OPENGL
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/// Current GLX Z value.
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int glx_z;
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#endif
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/// Reset program after next paint.
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bool reset;
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@ -555,14 +602,14 @@ typedef struct {
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f_GetSyncValuesOML glXGetSyncValuesOML;
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/// Pointer to glXWaitForMscOML function.
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f_WaitForMscOML glXWaitForMscOML;
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/// Pointer to glXSwapIntervalSGI function.
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f_SwapIntervalSGI glXSwapIntervalProc;
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/// Pointer to glXBindTexImageEXT function.
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f_BindTexImageEXT glXBindTexImageEXT;
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f_BindTexImageEXT glXBindTexImageProc;
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/// Pointer to glXReleaseTexImageEXT function.
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f_ReleaseTexImageEXT glXReleaseTexImageEXT;
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/// FBConfig for RGB GLX pixmap.
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struct glx_fbconfig *glx_fbconfig_rgb;
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/// FBConfig for RGBA GLX pixmap.
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struct glx_fbconfig *glx_fbconfig_rgba;
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f_ReleaseTexImageEXT glXReleaseTexImageProc;
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/// FBConfig-s for GLX pixmap of different depths.
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glx_fbconfig_t *glx_fbconfigs[OPENGL_MAX_DEPTH + 1];
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#endif
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// === X extension related ===
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@ -664,16 +711,16 @@ typedef struct _win {
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Window id;
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/// Window attributes.
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XWindowAttributes a;
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/// Window visual pict format;
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XRenderPictFormat *pictfmt;
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/// Window painting mode.
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winmode_t mode;
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/// Whether the window has been damaged at least once.
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bool damaged;
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/// Damage of the window.
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Damage damage;
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/// NameWindowPixmap of the window.
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Pixmap pixmap;
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/// Picture of the window.
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Picture picture;
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/// Paint info of the window.
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paint_t paint;
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/// Bounding shape of the window.
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XserverRegion border_size;
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/// Region of the whole window, shadow region included.
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@ -750,8 +797,6 @@ typedef struct _win {
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/// broken window managers not transferring client window's
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/// _NET_WM_OPACITY value
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opacity_t opacity_prop_client;
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/// Alpha mask Picture to render window with opacity.
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Picture alpha_pict;
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// Fading-related members
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/// Do not fade if it's false. Change on window type change.
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@ -763,8 +808,6 @@ typedef struct _win {
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// Frame-opacity-related members
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/// Current window frame opacity. Affected by window opacity.
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double frame_opacity;
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/// Alpha mask Picture to render window frame with opacity.
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Picture frame_alpha_pict;
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/// Frame widths. Determined by client window attributes.
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unsigned int left_width, right_width, top_width, bottom_width;
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@ -784,9 +827,7 @@ typedef struct _win {
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/// Height of shadow. Affected by window size and commandline argument.
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int shadow_height;
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/// Picture to render shadow. Affected by window size.
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Picture shadow_pict;
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/// Alpha mask Picture to render shadow. Affected by shadow opacity.
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Picture shadow_alpha_pict;
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paint_t shadow_paint;
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/// The value of _COMPTON_SHADOW attribute of the window. Below 0 for
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/// none.
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long prop_shadow;
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@ -896,6 +937,20 @@ XFixesDestroyRegion_(Display *dpy, XserverRegion reg,
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// === Functions ===
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/**
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* @brief Quit if the passed-in pointer is empty.
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*/
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static inline void
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allocchk_(const char *func_name, void *ptr) {
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if (!ptr) {
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printf_err("%s(): Failed to allocate memory.", func_name);
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exit(1);
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}
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}
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/// @brief Wrapper of allocchk_().
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#define allocchk(ptr) allocchk_(__func__, ptr)
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/**
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* Return whether a struct timeval value is empty.
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*/
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@ -1304,6 +1359,14 @@ get_atom(session_t *ps, const char *atom_name) {
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return XInternAtom(ps->dpy, atom_name, False);
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}
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/**
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* Return the painting target window.
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*/
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static inline Window
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get_tgt_window(session_t *ps) {
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return ps->o.paint_on_overlay ? ps->overlay: ps->root;
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}
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/**
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* Find a window from window id in window linked list of the session.
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*/
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@ -1371,6 +1434,17 @@ copy_region(const session_t *ps, XserverRegion oldregion) {
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return region;
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}
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/**
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* Destroy a <code>XserverRegion</code>.
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*/
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static inline void
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free_region(session_t *ps, XserverRegion *p) {
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if (*p) {
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XFixesDestroyRegion(ps->dpy, *p);
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*p = None;
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}
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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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@ -1454,6 +1528,66 @@ force_repaint(session_t *ps);
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bool
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vsync_init(session_t *ps);
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#ifdef CONFIG_VSYNC_OPENGL
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/** @name GLX
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*/
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///@{
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bool
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glx_init(session_t *ps, bool need_render);
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void
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glx_destroy(session_t *ps);
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void
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glx_on_root_change(session_t *ps);
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bool
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glx_bind_pixmap(session_t *ps, glx_texture_t **pptex, Pixmap pixmap,
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int width, int height, int depth);
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void
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glx_release_pixmap(session_t *ps, glx_texture_t *ptex);
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static inline bool
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glx_tex_binded(const glx_texture_t *ptex) {
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return ptex && ptex->glpixmap && ptex->texture;
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}
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bool
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glx_render(session_t *ps, const glx_texture_t *ptex,
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int x, int y, int dx, int dy, int width, int height, int z,
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double opacity, bool neg, XserverRegion reg_tgt);
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#endif
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static inline void
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free_texture(session_t *ps, glx_texture_t **pptex) {
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#ifdef CONFIG_VSYNC_OPENGL
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glx_texture_t *ptex = *pptex;
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// Quit if there's nothing
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if (!ptex)
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return;
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glx_release_pixmap(ps, ptex);
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// Free texture
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if (ptex->texture) {
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glDeleteTextures(1, &ptex->texture);
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ptex->texture = 0;
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}
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// Free structure itself
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free(ptex);
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*pptex = NULL;
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#endif
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}
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///@}
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/** @name DBus handling
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*/
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///@{
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#ifdef CONFIG_DBUS
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/** @name DBus handling
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*/
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|
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650
src/compton.c
650
src/compton.c
File diff suppressed because it is too large
Load Diff
137
src/compton.h
137
src/compton.h
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@ -9,7 +9,6 @@
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#include "common.h"
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#include <ctype.h>
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#include <math.h>
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#include <sys/select.h>
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#include <limits.h>
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|
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@ -52,14 +51,6 @@ set_ignore_next(session_t *ps) {
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static int
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should_ignore(session_t *ps, unsigned long sequence);
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/**
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* Return the painting target window.
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*/
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static inline Window
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get_tgt_window(session_t *ps) {
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return ps->o.paint_on_overlay ? ps->overlay: ps->root;
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}
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|
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/**
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* Reset filter on a <code>Picture</code>.
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*/
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|
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@ -119,16 +110,6 @@ array_wid_exists(const Window *arr, int count, Window wid) {
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return false;
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}
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/**
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* Destroy a <code>XserverRegion</code>.
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*/
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inline static void
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free_region(session_t *ps, XserverRegion *p) {
|
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if (*p) {
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XFixesDestroyRegion(ps->dpy, *p);
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*p = None;
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}
|
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}
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||||
|
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/**
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* Destroy a <code>Picture</code>.
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||||
|
|
@ -176,16 +157,58 @@ free_wincondlst(c2_lptr_t **pcondlst) {
|
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}
|
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#endif
|
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|
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/**
|
||||
* Check whether a paint_t contains enough data.
|
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*/
|
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static inline bool
|
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paint_isvalid(session_t *ps, const paint_t *ppaint) {
|
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if (!ppaint || !ppaint->pixmap)
|
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return false;
|
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|
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if (BKEND_XRENDER == ps->o.backend && !ppaint->pict)
|
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return false;
|
||||
|
||||
#ifdef CONFIG_VSYNC_OPENGL
|
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if (BKEND_GLX == ps->o.backend && !glx_tex_binded(ppaint->ptex))
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return false;
|
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#endif
|
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|
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return true;
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}
|
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/**
|
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* Bind texture in paint_t if we are using OpenGL backend.
|
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*/
|
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static inline bool
|
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paint_bind_tex(session_t *ps, paint_t *ppaint, int wid, int hei, int depth) {
|
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#ifdef CONFIG_VSYNC_OPENGL
|
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// TODO: Make sure we have the same Pixmap binded?
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if (BKEND_GLX == ps->o.backend && !glx_tex_binded(ppaint->ptex)) {
|
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return glx_bind_pixmap(ps, &ppaint->ptex, ppaint->pixmap, wid, hei, depth);
|
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}
|
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#endif
|
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return true;
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}
|
||||
|
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/**
|
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* Free paint_t.
|
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*/
|
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static inline void
|
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free_paint(session_t *ps, paint_t *ppaint) {
|
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free_texture(ps, &ppaint->ptex);
|
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free_picture(ps, &ppaint->pict);
|
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free_pixmap(ps, &ppaint->pixmap);
|
||||
}
|
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|
||||
/**
|
||||
* Destroy all resources in a <code>struct _win</code>.
|
||||
*/
|
||||
inline static void
|
||||
static inline void
|
||||
free_win_res(session_t *ps, win *w) {
|
||||
free_region(ps, &w->extents);
|
||||
free_pixmap(ps, &w->pixmap);
|
||||
free_picture(ps, &w->picture);
|
||||
free_paint(ps, &w->paint);
|
||||
free_region(ps, &w->border_size);
|
||||
free_picture(ps, &w->shadow_pict);
|
||||
free_paint(ps, &w->shadow_paint);
|
||||
free_damage(ps, &w->damage);
|
||||
free_region(ps, &w->reg_ignore);
|
||||
free(w->name);
|
||||
|
|
@ -194,6 +217,19 @@ free_win_res(session_t *ps, win *w) {
|
|||
free(w->role);
|
||||
}
|
||||
|
||||
/**
|
||||
* Free root tile related things.
|
||||
*/
|
||||
static inline void
|
||||
free_root_tile(session_t *ps) {
|
||||
free_picture(ps, &ps->root_tile_paint.pict);
|
||||
free_texture(ps, &ps->root_tile_paint.ptex);
|
||||
if (ps->root_tile_fill)
|
||||
free_pixmap(ps, &ps->root_tile_paint.pixmap);
|
||||
ps->root_tile_paint.pixmap = None;
|
||||
ps->root_tile_fill = false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get current system clock in milliseconds.
|
||||
*/
|
||||
|
|
@ -274,8 +310,8 @@ presum_gaussian(session_t *ps, conv *map);
|
|||
static XImage *
|
||||
make_shadow(session_t *ps, double opacity, int width, int height);
|
||||
|
||||
static Picture
|
||||
shadow_picture(session_t *ps, double opacity, int width, int height);
|
||||
static bool
|
||||
win_build_shadow(session_t *ps, win *w, double opacity);
|
||||
|
||||
static Picture
|
||||
solid_picture(session_t *ps, bool argb, double a,
|
||||
|
|
@ -463,11 +499,11 @@ group_is_focused(session_t *ps, Window leader) {
|
|||
static win *
|
||||
recheck_focus(session_t *ps);
|
||||
|
||||
static Picture
|
||||
root_tile_f(session_t *ps);
|
||||
static bool
|
||||
get_root_tile(session_t *ps);
|
||||
|
||||
static void
|
||||
paint_root(session_t *ps, Picture tgt_buffer);
|
||||
paint_root(session_t *ps, XserverRegion reg_paint);
|
||||
|
||||
static XserverRegion
|
||||
win_get_region(session_t *ps, win *w, bool use_offset);
|
||||
|
|
@ -490,6 +526,22 @@ get_frame_extents(session_t *ps, win *w, Window client);
|
|||
static win *
|
||||
paint_preprocess(session_t *ps, win *list);
|
||||
|
||||
static void
|
||||
render(session_t *ps, int x, int y, int dx, int dy, int wid, int hei,
|
||||
double opacity, bool argb, bool neg,
|
||||
Picture pict, glx_texture_t *ptex, XserverRegion reg_paint);
|
||||
|
||||
static inline void
|
||||
win_render(session_t *ps, win *w, int x, int y, int wid, int hei, double opacity, XserverRegion reg_paint, Picture pict) {
|
||||
const int dx = (w ? w->a.x: 0) + x;
|
||||
const int dy = (w ? w->a.y: 0) + y;
|
||||
const bool argb = (w && w->mode == WMODE_ARGB);
|
||||
const bool neg = (w && w->invert_color);
|
||||
|
||||
render(ps, x, y, dx, dy, wid, hei, opacity, argb, neg,
|
||||
pict, (w ? w->paint.ptex: ps->root_tile_paint.ptex), reg_paint);
|
||||
}
|
||||
|
||||
static void
|
||||
paint_all(session_t *ps, XserverRegion region, win *t);
|
||||
|
||||
|
|
@ -887,31 +939,7 @@ swopti_init(session_t *ps);
|
|||
static void
|
||||
swopti_handle_timeout(session_t *ps, struct timeval *ptv);
|
||||
|
||||
static bool
|
||||
opengl_init(session_t *ps, bool need_render);
|
||||
|
||||
static void
|
||||
opengl_destroy(session_t *ps);
|
||||
|
||||
#ifdef CONFIG_VSYNC_OPENGL
|
||||
/**
|
||||
* Check if a GLX extension exists.
|
||||
*/
|
||||
static inline bool
|
||||
opengl_hasext(session_t *ps, const char *ext) {
|
||||
const char *glx_exts = glXQueryExtensionsString(ps->dpy, ps->scr);
|
||||
const char *pos = strstr(glx_exts, ext);
|
||||
// Make sure the extension string is matched as a whole word
|
||||
if (!pos
|
||||
|| ((pos - glx_exts) && !isspace(*(pos - 1)))
|
||||
|| (strlen(pos) > strlen(ext) && !isspace(pos[strlen(ext)]))) {
|
||||
printf_errf("(): Missing OpenGL extension %s.", ext);
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Ensure we have a GLX context.
|
||||
*/
|
||||
|
|
@ -919,7 +947,7 @@ static inline bool
|
|||
ensure_glx_context(session_t *ps) {
|
||||
// Create GLX context
|
||||
if (!ps->glx_context)
|
||||
opengl_init(ps, false);
|
||||
glx_init(ps, false);
|
||||
|
||||
return ps->glx_context;
|
||||
}
|
||||
|
|
@ -939,6 +967,9 @@ vsync_opengl_init(session_t *ps);
|
|||
static bool
|
||||
vsync_opengl_oml_init(session_t *ps);
|
||||
|
||||
static bool
|
||||
vsync_opengl_swc_init(session_t *ps);
|
||||
|
||||
#ifdef CONFIG_VSYNC_OPENGL
|
||||
static int
|
||||
vsync_opengl_wait(session_t *ps);
|
||||
|
|
|
|||
|
|
@ -0,0 +1,521 @@
|
|||
/*
|
||||
* Compton - a compositor for X11
|
||||
*
|
||||
* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
|
||||
*
|
||||
* Copyright (c) 2011-2013, Christopher Jeffrey
|
||||
* See LICENSE for more information.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "opengl.h"
|
||||
|
||||
/**
|
||||
* Initialize OpenGL.
|
||||
*/
|
||||
bool
|
||||
glx_init(session_t *ps, bool need_render) {
|
||||
bool success = false;
|
||||
XVisualInfo *pvis = NULL;
|
||||
|
||||
// Check for GLX extension
|
||||
if (!ps->glx_exists) {
|
||||
if (glXQueryExtension(ps->dpy, &ps->glx_event, &ps->glx_error))
|
||||
ps->glx_exists = true;
|
||||
else {
|
||||
printf_errf("(): No GLX extension.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
}
|
||||
|
||||
// Get XVisualInfo
|
||||
pvis = get_visualinfo_from_visual(ps, ps->vis);
|
||||
if (!pvis) {
|
||||
printf_errf("(): Failed to acquire XVisualInfo for current visual.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
// Ensure the visual is double-buffered
|
||||
if (need_render) {
|
||||
int value = 0;
|
||||
if (Success != glXGetConfig(ps->dpy, pvis, GLX_USE_GL, &value) || !value) {
|
||||
printf_errf("(): Root visual is not a GL visual.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
if (Success != glXGetConfig(ps->dpy, pvis, GLX_DOUBLEBUFFER, &value)
|
||||
|| !value) {
|
||||
printf_errf("(): Root visual is not a double buffered GL visual.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure GLX_EXT_texture_from_pixmap exists
|
||||
if (need_render && !glx_hasext(ps, "GLX_EXT_texture_from_pixmap"))
|
||||
goto glx_init_end;
|
||||
|
||||
// Get GLX context
|
||||
ps->glx_context = glXCreateContext(ps->dpy, pvis, None, GL_TRUE);
|
||||
|
||||
if (!ps->glx_context) {
|
||||
printf_errf("(): Failed to get GLX context.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
// Attach GLX context
|
||||
if (!glXMakeCurrent(ps->dpy, get_tgt_window(ps), ps->glx_context)) {
|
||||
printf_errf("(): Failed to attach GLX context.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
// Acquire function addresses
|
||||
if (need_render) {
|
||||
ps->glXBindTexImageProc = (f_BindTexImageEXT)
|
||||
glXGetProcAddress((const GLubyte *) "glXBindTexImageEXT");
|
||||
ps->glXReleaseTexImageProc = (f_ReleaseTexImageEXT)
|
||||
glXGetProcAddress((const GLubyte *) "glXReleaseTexImageEXT");
|
||||
if (!ps->glXBindTexImageProc || !ps->glXReleaseTexImageProc) {
|
||||
printf_errf("(): Failed to acquire glXBindTexImageEXT() / glXReleaseTexImageEXT().");
|
||||
goto glx_init_end;
|
||||
}
|
||||
}
|
||||
|
||||
// Acquire FBConfigs
|
||||
if (need_render && !glx_update_fbconfig(ps))
|
||||
goto glx_init_end;
|
||||
|
||||
if (need_render) {
|
||||
// Adjust viewport
|
||||
glViewport(0, 0, ps->root_width, ps->root_height);
|
||||
|
||||
// Initialize settings, copied from dcompmgr
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glOrtho(0, ps->root_width, ps->root_height, 0, -100.0, 100.0);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
// glEnable(GL_DEPTH_TEST);
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glDisable(GL_BLEND);
|
||||
|
||||
// Clear screen
|
||||
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
glXSwapBuffers(ps->dpy, get_tgt_window(ps));
|
||||
}
|
||||
|
||||
success = true;
|
||||
|
||||
glx_init_end:
|
||||
if (pvis)
|
||||
XFree(pvis);
|
||||
|
||||
if (!success)
|
||||
glx_destroy(ps);
|
||||
|
||||
return success;
|
||||
}
|
||||
|
||||
/**
|
||||
* Destroy GLX related resources.
|
||||
*/
|
||||
void
|
||||
glx_destroy(session_t *ps) {
|
||||
// Free FBConfigs
|
||||
for (int i = 0; i <= OPENGL_MAX_DEPTH; ++i) {
|
||||
free(ps->glx_fbconfigs[i]);
|
||||
ps->glx_fbconfigs[i] = NULL;
|
||||
}
|
||||
|
||||
// Destroy GLX context
|
||||
if (ps->glx_context) {
|
||||
glXDestroyContext(ps->dpy, ps->glx_context);
|
||||
ps->glx_context = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Callback to run on root window size change.
|
||||
*/
|
||||
void
|
||||
glx_on_root_change(session_t *ps) {
|
||||
glViewport(0, 0, ps->root_width, ps->root_height);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Update the FBConfig of given depth.
|
||||
*/
|
||||
static inline void
|
||||
glx_update_fbconfig_bydepth(session_t *ps, int depth, glx_fbconfig_t *pfbcfg) {
|
||||
// Make sure the depth is sane
|
||||
if (depth < 0 || depth > OPENGL_MAX_DEPTH)
|
||||
return;
|
||||
|
||||
// Compare new FBConfig with current one
|
||||
if (glx_cmp_fbconfig(ps, ps->glx_fbconfigs[depth], pfbcfg) < 0) {
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(%d): %#x overrides %#x, target %#x.\n", depth, (unsigned) pfbcfg->cfg, (ps->glx_fbconfigs[depth] ? (unsigned) ps->glx_fbconfigs[depth]->cfg: 0), pfbcfg->texture_tgts);
|
||||
#endif
|
||||
if (!ps->glx_fbconfigs[depth]) {
|
||||
ps->glx_fbconfigs[depth] = malloc(sizeof(glx_fbconfig_t));
|
||||
allocchk(ps->glx_fbconfigs[depth]);
|
||||
}
|
||||
(*ps->glx_fbconfigs[depth]) = *pfbcfg;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get GLX FBConfigs for all depths.
|
||||
*/
|
||||
static bool
|
||||
glx_update_fbconfig(session_t *ps) {
|
||||
// Acquire all FBConfigs and loop through them
|
||||
int nele = 0;
|
||||
GLXFBConfig* pfbcfgs = glXGetFBConfigs(ps->dpy, ps->scr, &nele);
|
||||
|
||||
for (GLXFBConfig *pcur = pfbcfgs; pcur < pfbcfgs + nele; pcur++) {
|
||||
glx_fbconfig_t fbinfo = {
|
||||
.cfg = *pcur,
|
||||
.texture_fmt = 0,
|
||||
.texture_tgts = 0,
|
||||
.y_inverted = false,
|
||||
};
|
||||
int depth = 0, depth_alpha = 0, val = 0;
|
||||
|
||||
if (Success != glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BUFFER_SIZE, &depth)
|
||||
|| Success != glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_ALPHA_SIZE, &depth_alpha)) {
|
||||
printf_errf("(): Failed to retrieve buffer size and alpha size of FBConfig %d.", (int) (pcur - pfbcfgs));
|
||||
continue;
|
||||
}
|
||||
if (Success != glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BIND_TO_TEXTURE_TARGETS_EXT, &fbinfo.texture_tgts)) {
|
||||
printf_errf("(): Failed to retrieve BIND_TO_TEXTURE_TARGETS_EXT of FBConfig %d.", (int) (pcur - pfbcfgs));
|
||||
continue;
|
||||
}
|
||||
|
||||
bool rgb = false;
|
||||
bool rgba = false;
|
||||
|
||||
if (depth >= 32 && depth_alpha && Success == glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BIND_TO_TEXTURE_RGBA_EXT, &val) && val)
|
||||
rgba = true;
|
||||
|
||||
if (Success == glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BIND_TO_TEXTURE_RGB_EXT, &val) && val)
|
||||
rgb = true;
|
||||
|
||||
if (Success == glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_Y_INVERTED_EXT, &val))
|
||||
fbinfo.y_inverted = val;
|
||||
|
||||
if ((depth - depth_alpha) < 32 && rgb) {
|
||||
fbinfo.texture_fmt = GLX_TEXTURE_FORMAT_RGB_EXT;
|
||||
glx_update_fbconfig_bydepth(ps, depth - depth_alpha, &fbinfo);
|
||||
}
|
||||
|
||||
if (rgba) {
|
||||
fbinfo.texture_fmt = GLX_TEXTURE_FORMAT_RGBA_EXT;
|
||||
glx_update_fbconfig_bydepth(ps, depth, &fbinfo);
|
||||
}
|
||||
}
|
||||
|
||||
if (pfbcfgs)
|
||||
XFree(pfbcfgs);
|
||||
|
||||
// Sanity checks
|
||||
if (!ps->glx_fbconfigs[ps->depth]) {
|
||||
printf_errf("(): No FBConfig found for default depth %d.", ps->depth);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!ps->glx_fbconfigs[32]) {
|
||||
printf_errf("(): No FBConfig found for depth 32. Expect crazy things.");
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static inline int
|
||||
glx_cmp_fbconfig_cmpattr(session_t *ps,
|
||||
const glx_fbconfig_t *pfbc_a, const glx_fbconfig_t *pfbc_b,
|
||||
int attr) {
|
||||
int attr_a = 0, attr_b = 0;
|
||||
|
||||
// TODO: Error checking
|
||||
glXGetFBConfigAttrib(ps->dpy, pfbc_a->cfg, attr, &attr_a);
|
||||
glXGetFBConfigAttrib(ps->dpy, pfbc_b->cfg, attr, &attr_b);
|
||||
|
||||
return attr_a - attr_b;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compare two GLX FBConfig's to find the preferred one.
|
||||
*/
|
||||
static int
|
||||
glx_cmp_fbconfig(session_t *ps,
|
||||
const glx_fbconfig_t *pfbc_a, const glx_fbconfig_t *pfbc_b) {
|
||||
int result = 0;
|
||||
|
||||
if (!pfbc_a)
|
||||
return -1;
|
||||
if (!pfbc_b)
|
||||
return 1;
|
||||
|
||||
#define P_CMPATTR_LT(attr) { if ((result = glx_cmp_fbconfig_cmpattr(ps, pfbc_a, pfbc_b, (attr)))) return -result; }
|
||||
#define P_CMPATTR_GT(attr) { if ((result = glx_cmp_fbconfig_cmpattr(ps, pfbc_a, pfbc_b, (attr)))) return result; }
|
||||
|
||||
P_CMPATTR_LT(GLX_BIND_TO_TEXTURE_RGBA_EXT);
|
||||
P_CMPATTR_LT(GLX_DOUBLEBUFFER);
|
||||
P_CMPATTR_LT(GLX_STENCIL_SIZE);
|
||||
P_CMPATTR_LT(GLX_DEPTH_SIZE);
|
||||
P_CMPATTR_GT(GLX_BIND_TO_MIPMAP_TEXTURE_EXT);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Bind a X pixmap to an OpenGL texture.
|
||||
*/
|
||||
bool
|
||||
glx_bind_pixmap(session_t *ps, glx_texture_t **pptex, Pixmap pixmap,
|
||||
int width, int height, int depth) {
|
||||
if (depth > OPENGL_MAX_DEPTH) {
|
||||
printf_errf("(%d): Requested depth higher than %d.", depth,
|
||||
OPENGL_MAX_DEPTH);
|
||||
return false;
|
||||
}
|
||||
const glx_fbconfig_t *pcfg = ps->glx_fbconfigs[depth];
|
||||
if (!pcfg) {
|
||||
printf_errf("(%d): Couldn't find FBConfig with requested depth.", depth);
|
||||
return false;
|
||||
}
|
||||
|
||||
const GLenum target = GL_TEXTURE_2D;
|
||||
glx_texture_t *ptex = *pptex;
|
||||
bool need_release = true;
|
||||
|
||||
// Allocate structure
|
||||
if (!ptex) {
|
||||
static const glx_texture_t GLX_TEX_DEF = {
|
||||
.texture = 0,
|
||||
.glpixmap = 0,
|
||||
.pixmap = 0,
|
||||
.width = 0,
|
||||
.height = 0,
|
||||
.depth = 0,
|
||||
.y_inverted = false,
|
||||
};
|
||||
|
||||
ptex = malloc(sizeof(glx_texture_t));
|
||||
allocchk(ptex);
|
||||
memcpy(ptex, &GLX_TEX_DEF, sizeof(glx_texture_t));
|
||||
*pptex = ptex;
|
||||
}
|
||||
|
||||
glEnable(target);
|
||||
|
||||
// Release pixmap if parameters are inconsistent
|
||||
if (ptex->texture && !(width == ptex->width && height == ptex->height
|
||||
&& ptex->pixmap == pixmap && depth == ptex->depth)) {
|
||||
glx_release_pixmap(ps, ptex);
|
||||
}
|
||||
|
||||
// Create texture
|
||||
if (!ptex->texture) {
|
||||
need_release = false;
|
||||
|
||||
GLuint texture = 0;
|
||||
glGenTextures(1, &texture);
|
||||
glBindTexture(target, texture);
|
||||
|
||||
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
||||
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
||||
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
|
||||
glBindTexture(target, 0);
|
||||
|
||||
ptex->texture = texture;
|
||||
ptex->y_inverted = pcfg->y_inverted;
|
||||
}
|
||||
if (!ptex->texture) {
|
||||
printf_errf("(): Failed to allocate texture.");
|
||||
return false;
|
||||
}
|
||||
|
||||
glBindTexture(target, ptex->texture);
|
||||
|
||||
// Create GLX pixmap
|
||||
if (!ptex->glpixmap) {
|
||||
need_release = false;
|
||||
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(): depth %d rgba %d\n", depth, (GLX_TEXTURE_FORMAT_RGBA_EXT == pcfg->texture_fmt));
|
||||
#endif
|
||||
|
||||
int attrs[] = {
|
||||
GLX_TEXTURE_FORMAT_EXT,
|
||||
pcfg->texture_fmt,
|
||||
// GLX_TEXTURE_TARGET_EXT,
|
||||
// ,
|
||||
0,
|
||||
};
|
||||
|
||||
ptex->glpixmap = glXCreatePixmap(ps->dpy, pcfg->cfg, pixmap, attrs);
|
||||
}
|
||||
if (!ptex->glpixmap) {
|
||||
printf_errf("(): Failed to allocate GLX pixmap.");
|
||||
return false;
|
||||
}
|
||||
|
||||
// The specification requires rebinding whenever the content changes...
|
||||
// We can't follow this, too slow.
|
||||
if (need_release)
|
||||
ps->glXReleaseTexImageProc(ps->dpy, ptex->glpixmap, GLX_FRONT_LEFT_EXT);
|
||||
|
||||
ps->glXBindTexImageProc(ps->dpy, ptex->glpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
||||
|
||||
// Cleanup
|
||||
glBindTexture(target, 0);
|
||||
glDisable(target);
|
||||
|
||||
ptex->width = width;
|
||||
ptex->height = height;
|
||||
ptex->depth = depth;
|
||||
ptex->pixmap = pixmap;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Release binding of a texture.
|
||||
*/
|
||||
void
|
||||
glx_release_pixmap(session_t *ps, glx_texture_t *ptex) {
|
||||
// Release binding
|
||||
if (ptex->glpixmap && ptex->texture) {
|
||||
glBindTexture(GL_TEXTURE_2D, ptex->texture);
|
||||
ps->glXReleaseTexImageProc(ps->dpy, ptex->glpixmap, GLX_FRONT_LEFT_EXT);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
}
|
||||
|
||||
// Free GLX Pixmap
|
||||
if (ptex->glpixmap) {
|
||||
glXDestroyPixmap(ps->dpy, ptex->glpixmap);
|
||||
ptex->glpixmap = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Render a region with texture data.
|
||||
*/
|
||||
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 neg, XserverRegion reg_tgt) {
|
||||
if (!ptex || !ptex->texture) {
|
||||
printf_errf("(): Missing texture.");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Enable blending if needed
|
||||
if (opacity < 1.0 || GLX_TEXTURE_FORMAT_RGBA_EXT ==
|
||||
ps->glx_fbconfigs[ptex->depth]->texture_fmt) {
|
||||
glEnable(GL_BLEND);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
// Needed for handling opacity of ARGB texture
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
||||
glColor4f(1.0f, 1.0f, 1.0f, opacity);
|
||||
}
|
||||
|
||||
// Color negation
|
||||
if (neg) {
|
||||
// Simple color negation
|
||||
if (!glIsEnabled(GL_BLEND)) {
|
||||
glEnable(GL_COLOR_LOGIC_OP);
|
||||
glLogicOp(GL_COPY_INVERTED);
|
||||
}
|
||||
// Blending color negation
|
||||
else {
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_ONE_MINUS_SRC_COLOR);
|
||||
}
|
||||
}
|
||||
|
||||
glEnable(GL_TEXTURE_2D);
|
||||
glBindTexture(GL_TEXTURE_2D, ptex->texture);
|
||||
|
||||
glBegin(GL_QUADS);
|
||||
|
||||
{
|
||||
XserverRegion reg_new = None;
|
||||
|
||||
XRectangle rec_all = {
|
||||
.x = dx,
|
||||
.y = dy,
|
||||
.width = width,
|
||||
.height = height
|
||||
};
|
||||
|
||||
XRectangle *rects = &rec_all;
|
||||
int nrects = 1;
|
||||
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(): Draw: %d, %d, %d, %d -> %d, %d (%d, %d) z %d \n", x, y, width, height, dx, dy, ptex->width, ptex->height, z);
|
||||
#endif
|
||||
|
||||
if (reg_tgt) {
|
||||
reg_new = XFixesCreateRegion(ps->dpy, &rec_all, 1);
|
||||
XFixesIntersectRegion(ps->dpy, reg_new, reg_new, reg_tgt);
|
||||
|
||||
nrects = 0;
|
||||
rects = XFixesFetchRegion(ps->dpy, reg_new, &nrects);
|
||||
}
|
||||
|
||||
for (int i = 0; i < nrects; ++i) {
|
||||
GLfloat rx = (double) (rects[i].x - dx + x) / ptex->width;
|
||||
GLfloat ry = (double) (rects[i].y - dy + y) / ptex->height;
|
||||
GLfloat rxe = rx + (double) rects[i].width / ptex->width;
|
||||
GLfloat rye = ry + (double) rects[i].height / ptex->height;
|
||||
GLint rdx = rects[i].x;
|
||||
GLint rdy = rects[i].y;
|
||||
GLint rdxe = rdx + rects[i].width;
|
||||
GLint rdye = rdy + rects[i].height;
|
||||
|
||||
// Invert Y if needed, this may not work as expected, though. I don't
|
||||
// have such a FBConfig to test with.
|
||||
if (!ptex->y_inverted) {
|
||||
ry = 1.0 - ry;
|
||||
rye = 1.0 - rye;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(): Rect %d: %f, %f, %f, %f -> %d, %d, %d, %d\n", i, rx, ry, rxe, rye, rdx, rdy, rdxe, rdye);
|
||||
#endif
|
||||
|
||||
glTexCoord2f(rx, ry);
|
||||
glVertex3i(rdx, rdy, z);
|
||||
|
||||
glTexCoord2f(rxe, ry);
|
||||
glVertex3i(rdxe, rdy, z);
|
||||
|
||||
glTexCoord2f(rxe, rye);
|
||||
glVertex3i(rdxe, rdye, z);
|
||||
|
||||
glTexCoord2f(rx, rye);
|
||||
glVertex3i(rdx, rdye, z);
|
||||
}
|
||||
|
||||
if (rects && rects != &rec_all)
|
||||
XFree(rects);
|
||||
free_region(ps, ®_new);
|
||||
}
|
||||
glEnd();
|
||||
|
||||
// Cleanup
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
glColor4f(0.0f, 0.0f, 0.0f, 0.0f);
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
glDisable(GL_BLEND);
|
||||
glDisable(GL_COLOR_LOGIC_OP);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
/*
|
||||
* Compton - a compositor for X11
|
||||
*
|
||||
* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
|
||||
*
|
||||
* Copyright (c) 2011-2013, Christopher Jeffrey
|
||||
* See LICENSE for more information.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "common.h"
|
||||
|
||||
#include <ctype.h>
|
||||
|
||||
/**
|
||||
* Check if a GLX extension exists.
|
||||
*/
|
||||
static inline bool
|
||||
glx_hasext(session_t *ps, const char *ext) {
|
||||
const char *glx_exts = glXQueryExtensionsString(ps->dpy, ps->scr);
|
||||
const char *pos = strstr(glx_exts, ext);
|
||||
// Make sure the extension string is matched as a whole word
|
||||
if (!pos
|
||||
|| ((pos - glx_exts) && !isspace(*(pos - 1)))
|
||||
|| (strlen(pos) > strlen(ext) && !isspace(pos[strlen(ext)]))) {
|
||||
printf_errf("(): Missing OpenGL extension %s.", ext);
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static inline XVisualInfo *
|
||||
get_visualinfo_from_visual(session_t *ps, Visual *visual) {
|
||||
XVisualInfo vreq = { .visualid = XVisualIDFromVisual(visual) };
|
||||
int nitems = 0;
|
||||
|
||||
return XGetVisualInfo(ps->dpy, VisualIDMask, &vreq, &nitems);
|
||||
}
|
||||
|
||||
static bool
|
||||
glx_update_fbconfig(session_t *ps);
|
||||
|
||||
static int
|
||||
glx_cmp_fbconfig(session_t *ps,
|
||||
const glx_fbconfig_t *pfbc_a, const glx_fbconfig_t *pfbc_b);
|
||||
Loading…
Reference in New Issue