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Imp: Fix GL_TEXTURE_RECTANGLE & Enhance --glx-copy-from-front

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- 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
This commit is contained in:
Richard Grenville
2013-05-08 22:44:36 +08:00
parent 555131101f
commit 1c66237f99
3 changed files with 160 additions and 70 deletions
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12
src/compton.c
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@@ -4238,9 +4238,10 @@ usage(void) {
" boost.\n"
"--glx-copy-from-front\n"
" GLX backend: Copy unmodified regions from front buffer instead of\n"
" redrawing them all. My tests with nvidia-drivers show a 10% decrease\n"
" in performance when the whole screen is modified, but a 20% increase\n"
" when only 1/4 is. My tests on nouveau show terrible slowdown.\n"
" redrawing them all. My tests with nvidia-drivers show a 5% decrease\n"
" in performance when the whole screen is modified, but a 30% increase\n"
" when only 1/4 is. My tests on nouveau show terrible slowdown. Could\n"
" work with --glx-swap-method but not --glx-use-copysubbuffermesa.\n"
"--glx-use-copysubbuffermesa\n"
" GLX backend: Use MESA_copy_sub_buffer to do partial screen update.\n"
" My tests on nouveau shows a 200% performance boost when only 1/4 of\n"
@@ -4258,6 +4259,9 @@ usage(void) {
" but safer (6 is still faster than 0). -1 means auto-detect using\n"
" GLX_EXT_buffer_age, supported by some drivers. Useless with\n"
" --glx-use-copysubbuffermesa.\n"
"--glx-use-gpushader4\n"
" GLX backend: Use GL_EXT_gpu_shader4 for some optimization on blur\n"
" GLSL code. My tests on GTX 670 show no noticeable effect.\n"
#undef WARNING
#ifndef CONFIG_DBUS
#define WARNING WARNING_DISABLED
@@ -4879,6 +4883,7 @@ get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
{ "fade-exclude", required_argument, NULL, 300 },
{ "blur-kern", required_argument, NULL, 301 },
{ "resize-damage", required_argument, NULL, 302 },
{ "glx-use-gpushader4", no_argument, NULL, 303 },
// Must terminate with a NULL entry
{ NULL, 0, NULL, 0 },
};
@@ -5111,6 +5116,7 @@ get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
// --resize-damage
ps->o.resize_damage = atoi(optarg);
break;
P_CASEBOOL(303, glx_use_gpushader4);
default:
usage();
break;