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* Bug fix #124: GLX: Missing check on FBConfig X visual depthRichard Grenville2013-07-051-6/+22
| | | | | - Check FBConfig X visual depth, like Compiz, to fix issues with nvidia-drivers-325.08 . Thanks to guotsuan for reporting.
* Misc: OpenGL 3.0 compatibility & miscRichard Grenville2013-06-251-1/+2
| | | | | | | | - Fix OpenGL 3.0 compatibility by changing glFramebufferTexture() to glFramebufferTexture2D(). Thanks to danfe for suggestion! - Add notification about DocBook toolchina dependencies. Thanks to danfe. (#121)
* Imp: Multi-pass blur & D-Bus fading controlRichard Grenville2013-05-201-122/+302
| | | | | | | | | | | | | | | | | | | | | | | | - Add multipass blur support. Note GLX Framebuffer support is required. My benchmark shows multipass blur brings 5% performance boost for X Render backend (3x3box). On GLX backend it brings 10% performance boost for 5x5box but negatively affects performance for 3x3box. Thanks to jrfonseca for advice. (#107) - GLX backend: Cache blur texture for each window, for a 12% performance boost. - Add D-Bus fading control. Thanks to yulan6248 for testing. (#112) - Fix FAQ link in README.md. Thanks to lorenzos for report. (#111) - Correctly deinitialize VSync on on-the-fly VSync method switch. - X Render backend: Normalize blur kernel. - Code clean-up. - Known issue: Linear corruption on border of a window may appear with X Render multi-pass blur. Possible to fix but probably not worthwhile.
* Misc: Add DEBUG_GLX_MARK & MiscRichard Grenville2013-05-121-0/+9
| | | | | | | | | | | - GLX backend: Add DEBUG_GLX_MARK, to add GL marks around functions with glStringMarkerGREMEDY(), and mark frame termination with glFrameTerminatorGREMEDY(). - Print output of `compton -h` to stdout. (#110) - GLX backend: Strip out elements with factor 0 in GLSL blur code. Thanks to jrfonseca for guides. (#107)
* Misc: Add DEBUG_GLX_PAINTREGRichard Grenville2013-05-091-0/+87
| | | | | - GLX: Add DEBUG_GLX_PAINTREG, for debugging painting region issues, for p4ddy's problem.
* Imp: Fix GL_TEXTURE_RECTANGLE & Enhance --glx-copy-from-frontRichard Grenville2013-05-081-65/+137
| | | | | | | | | | | | | | - Fix GL_TEXTURE_RECTANGLE support. Thanks to amonakov for guides. (#107) - Enhance --glx-copy-from-front to improve performance and make it work with --glx-swap-method, copied from kwin patch. Thanks to bwat47 for info. (#107) - Add texture2Doffset() support in blur GLSL shader. Thanks to amonakov for advice. No visible benefit here, though. (#107) - Only limited tests are done and I'm super sleepy. Bugs expected
* Bug fix: Fix --resize-damageRichard Grenville2013-04-271-9/+21
| | | | | | | | | | | | - Fix --resize-damage. I forgot to shrink the painting region back when actually copying to destination. - Include extra pixels around the blur texture to avoid some possible small issues, if --resize-damage is positive. - Known issue: Line artifacts may still appear with --dbe (X Render backend) or --glx-swap-method (GLX backend). I doubt if there's way to fix this without very inefficient mechanisms.
* Improvement: --resize-damageRichard Grenville2013-04-271-0/+1
| | | | | | | | - Add --resize-damage to enlarge/shrink repaint region by a specific number of pixels, used for solving the line corruption issue with blur. Thanks to Nuck and jerri in #104 for reporting. - Fix the memory leak of blur shader string.
* Improvement: Enhance --glx-swap-methodRichard Grenville2013-04-261-20/+52
| | | | | - Enhance --glx-swap-method to support longer buffers ages (3-6), and automatic buffer age detection via GLX_EXT_buffer_age.
* Improvement: --blur-kernRichard Grenville2013-04-251-27/+61
| | | | | | | | | | | - Add blur convolution kernel customization, --blur-kern. The format is a bit tricky so be sure to read the description in `compton -h`. Not much tests received. - GLX backend: Tolerate missing GLSL uniforms for strangely shaped convolution kernel. - Fix a memory leak that blur-background blacklist is not freed.
* Misc: Fix wrong description & DEBUG_GLX_ERRRichard Grenville2013-04-251-0/+36
| | | | | | | | - Fix description of "opengl" VSync. - Add DEBUG_GLX_ERR to check for OpenGL errors. - Update man page.
* Improvement: --glx-swap-method & --fade-excludeRichard Grenville2013-04-211-1/+13
| | | | | | | | | | | | | | | | - GLX backend: Add --glx-swap-method, to reduce painting region if the driver uses exchange or copy buffer swaps. Untested. - Add --fade-exclude, to disable fading on specific windows based on some conditions. Untested. - Expose GLX backend options through configuration file. Add fetching of GLX backend options through D-Bus. - Use NULL pointer instead of element count to delimit string arrays in parse_vsync()/parse_backend()/parse_glx_swap_method(). - Add documentation about "wintypes" section in configuration file.
* Bug fix: GLX: Fix dim and blur with --glx-no-stencilRichard Grenville2013-04-061-96/+106
| | | | | | | | | | | | | - GLX backend: Fix broken dim and blur with --glx-no-stencil when dealing with shaped windows. - GLX backend: Cache region contents and do a local region intersection instead of using XFixesIntersectRegion(). Drastic reduction in CPU usage for --glx-no-stencil. Now --glx-no-stencil substantially outperforms (~15%) normal mode. - Use macros to reuse paint-in-region code in opengl.c . Add new type "reg_data_t" to store XserverRegion cache.
* Improvement: GLX: Cache region contents & --glx-no-rebind-pixmapRichard Grenville2013-04-051-16/+19
| | | | | | | | | | | | | | - Cache region contents in is_region_empty(), mostly useful only for GLX backend to save one roundtrip to X. - GLX backend: Add --glx-no-rebind-pixmap, which prevents rebinding of GLX texture to pixmap on content change. It doesn't work on some drivers, but it saves some CPU on those where it does. - Wrap XFree() with a new function cxfree() since its man page claims NULL pointers are not acceptable (although in fact it does...). - Use macro to save some code in get_cfg(). Code clean-up.
* Bug fix: GLX: Fix --inactive-dim & fix color inversionRichard Grenville2013-03-251-12/+124
| | | | | | | | | | | | | - GLX backend: Fix broken --inactive-dim. - GLX backend: Fix bugs when inverting colors of windows. Thanks to madsy and neure for help. - GLX backend: Lift `glx_no_stencil` restriction from glx_init_blur(). It still probably won't work, but the user can try. - XRender backend: Use XRenderFillRectangles() instead of XRenderComposite() to do dimming.
* Improvement: --glx-use-copysubbuffermesaRichard Grenville2013-03-211-3/+45
| | | | | | | | | | - GLX backend: Add --glx-use-copysubbuffermesa, to use MESA_copy_sub_buffer to do partial screen update. Huge performance boost on mesa drivers for partial screen updates, but does not work for nvidia-drivers and may break VSync. Automagically overrides --glx-copy-from-front. - Add rect_is_fullscreen() to reuse code. Misc changes.
* Feature #69: GLX: Blur backgroundRichard Grenville2013-03-201-24/+89
| | | | | | | | - GLX backend: Add blur background support using a GLSL shader. Only tested with nvidia-drivers-313.26. Known to cause quite some decrease in performance (~10%?). - Detach shaders in glx_create_program(). Misc changes.
* Improvement: --glx-copy-from-front & benchmark modeRichard Grenville2013-03-191-41/+158
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - GLX backend: Add --glx-copy-front, which copies all unmodified regions from front buffer to back buffer instead of redrawing the whole screen. Unfortunately, probably because glCopyPixels() isn't usually well-optimized on graphic cards, this option appears very unstable in its effect: Over 20% boost in performance when only 1/4 of the screen is modified, but 10% decrease when the whole screen is. Thus, not enabled by default. - GLX backend: Add glx_blur_dst(), to prepare for the background blur feature. It currently is capable to modify background in the desired way, but the core blur shader is absent. glConvolution2D() seemingly relies entirely on CPU and has horrifying performance. I've hesitating about whether I should use ARB assembly language or GLSL for the shader. - GLX backend: Invert y-axis GL matrix. It's upside-down previously because that's what dcompmgr uses. Seemingly a "normal" y-axis is required for glCopyPixels() to operate correctly. - GLX backend: Fix some GLX_TEXTURE_RECTANGLE compatibility issues. Still, not actually tested. - Add benchmark mode (--benchmark & --benchmark-wid). - Misc changes.
* Improvement: GLX: Use SCISSOR_TEST instead of STENCIL_TEST when possibleRichard Grenville2013-03-181-9/+28
| | | | | | | | - GLX backend: Use GL_SCISSOR_TEST instead of STENCIL_TEST if there's only one rectangle in glx_set_clip(). Profiling with gDebugger shows a 10% performance improvement. - Add .desktop installation rules. (#97)
* Bug fix: GLX: ARGB texture too dark & Jitter when resize & othersRichard Grenville2013-03-181-21/+40
| | | | | | | | | | | | | | | | | | | | | | - GLX backend: Fix a bug that ARGB windows / shadows are rendered too dark. Thanks to derhass in FreeNode/##opengl for help. - GLX backend: Fix a problem that during window resize the content looks jittering, by letting compton fetch pixmap sizes with XGetGeometry() instead of relying on window width/height, which could be inaccurate during window resize. Negative effect on performance. Thanks to M4he for reporting. (#7) - Add .desktop file. Thanks to quequotion for providing it. (#97) - Avoid checking presence of window pixmap, because they may not exist with very old X Composite implementations. - Add workaround for a strange window restack issue when compton receieves a ConfigureNotify with non-existent new above window. - Add debugging function hexdump(). Extra sanity checks on various places.
* Bug fix: GLX backend incompatibility with VirtualBox & othersRichard Grenville2013-03-171-10/+20
| | | | | | | | | | | | | | | | | | | | | | | - GLX backend: Fix a bug that window content does not get updated on VirtualBox, by rebinding texture when window content changes. This may have a negative effect on performance. - GLX backend: Add --glx-no-stencil to restore the old clipping method, just in case. - GLX backend: Apply stricter checks on texture-pixmap binding. - GLX backend: Fix a bug that glx_set_clip() behaves incorrectly when None is passed in. - GLX backend: Use glEnable()/glDisable() to toggle stencil tests, in hope to increase performance. - Move window pixmap/picture fetching to win_paint_win(), in hope to increase performance. - Intersect shadow painting region with its bounding rectangle, in hope to increase performance.
* Bug fix: GLX backend incompatibility with mesa & othersRichard Grenville2013-03-161-23/+211
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Fix a bug that glx_bind_pixmap() doesn't work with mesa drivers. Thanks to Janhouse and mkraemer for reporting. (#7) - Use stencil buffer to attempt to eliminate potential double-paint issue in glx_render(). X Fixes doesn't guarantee the rectangles in a region do not overlap, and this may cause some regions to be painted twice, which would be a problem if we are painting transparent things. Now the target window must have a stencil buffer. Compiz uses its own region implementation to deal with this, but as a lightweight compositor we can't really do the same. It may have a positive or negative effort over performance. Callgrind result indicates basically no change in performance, but this may or may not be true. - Correctly distinguish GL extensions and GLX extensions. Sorry. :-D - Handle screen size. Thanks to tsmithe for reporting. (#7) - Rename OpenGL backend to GLX backend, because, we might have a EGL backend someday. - Add configuration file option `backend` to specify backend. Add `backend` to D-Bus `opts_get`. - Add OpenGL shader compilation code, but currently unused. - Minor adjustments. - Known issue: Window content doesn't get updated in VirtualBox, probably because its OpenGL implementation requires constant rebinding of texture. But that's really slow... - Known issue: Blur feature is still unimplemented in GLX backend.
* Feature: OpenGL backendRichard Grenville2013-03-151-0/+521
- 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.
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