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some alternate vsync glx extensions

This commit is contained in:
insofaras 2016-02-24 16:31:09 +00:00
parent 6a508bd872
commit 0a6c851788
1 changed files with 34 additions and 5 deletions
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39
linux_4ed.cpp
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@ -448,7 +448,6 @@ Sys_CLI_Update_Step_Sig(system_cli_update_step){
// NOTE(inso): EOF
break;
} else {
printf("READ [%.*s]\n", (int)num, ptr);
ptr += num;
space_left -= num;
}
@ -1175,19 +1174,49 @@ InitializeOpenGLContext(Display *XDisplay, Window XWindow, GLXFBConfig &bestFbc,
printf("GL_VERSION: %s\n", Version);
printf("GL_EXTENSIONS: %s\n", Extensions);
//TODO(inso): this should be optional
//TODO(inso): enable vsync if available. this should probably be optional
if(strstr(glxExts, "GLX_EXT_swap_control ")){
PFNGLXSWAPINTERVALEXTPROC glx_swap_interval =
PFNGLXSWAPINTERVALEXTPROC glx_swap_interval_ext =
(PFNGLXSWAPINTERVALEXTPROC) glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalEXT");
if(glx_swap_interval){
glx_swap_interval(XDisplay, XWindow, 1);
if(glx_swap_interval_ext){
glx_swap_interval_ext(XDisplay, XWindow, 1);
unsigned int swap_val = 0;
glXQueryDrawable(XDisplay, XWindow, GLX_SWAP_INTERVAL_EXT, &swap_val);
linuxvars.vsync = swap_val == 1;
printf("VSync enabled? %d\n", linuxvars.vsync);
}
} else if(strstr(glxExts, "GLX_MESA_swap_control ")){
PFNGLXSWAPINTERVALMESAPROC glx_swap_interval_mesa =
(PFNGLXSWAPINTERVALMESAPROC) glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalMESA");
PFNGLXGETSWAPINTERVALMESAPROC glx_get_swap_interval_mesa =
(PFNGLXGETSWAPINTERVALMESAPROC) glXGetProcAddressARB((const GLubyte*)"glXGetSwapIntervalMESA");
if(glx_swap_interval_mesa){
glx_swap_interval_mesa(1);
if(glx_get_swap_interval_mesa){
linuxvars.vsync = glx_get_swap_interval_mesa();
printf("VSync enabled? %d (MESA)\n", linuxvars.vsync);
} else {
// NOTE(inso): assume it worked?
linuxvars.vsync = 1;
puts("VSync enabled? possibly (MESA)");
}
}
} else if(strstr(glxExts, "GLX_SGI_swap_control ")){
PFNGLXSWAPINTERVALSGIPROC glx_swap_interval_sgi =
(PFNGLXSWAPINTERVALSGIPROC) glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalSGI");
if(glx_swap_interval_sgi){
glx_swap_interval_sgi(1);
//NOTE(inso): The SGI one doesn't seem to have a way to confirm we got it...
linuxvars.vsync = 1;
puts("VSync enabled? hopefully (SGI)");
}
} else {
puts("VSync enabled? nope, no suitable extension");
}
#if FRED_INTERNAL