From 69c3102465e1d0246d2f78073b517e2779733054 Mon Sep 17 00:00:00 2001 From: dec05eba Date: Thu, 26 Sep 2024 17:35:16 +0200 Subject: Better glx config selection --- src/egl.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++---------------- 1 file changed, 79 insertions(+), 27 deletions(-) (limited to 'src') diff --git a/src/egl.c b/src/egl.c index 4da7c4d..6e8e000 100644 --- a/src/egl.c +++ b/src/egl.c @@ -2,6 +2,7 @@ #include "../include/library_loader.h" #include "../include/utils.h" +#include #include #include #include @@ -161,6 +162,7 @@ static void store_x11_monitor(const gsr_monitor *monitor, void *userdata) { #define GLX_RGBA_BIT 0x00000001 #define GLX_WINDOW_BIT 0x00000001 #define GLX_PIXMAP_BIT 0x00000002 +#define GLX_BIND_TO_TEXTURE_RGB_EXT 0x20D0 #define GLX_BIND_TO_TEXTURE_RGBA_EXT 0x20D1 #define GLX_BIND_TO_TEXTURE_TARGETS_EXT 0x20D3 #define GLX_TEXTURE_2D_BIT_EXT 0x00000002 @@ -177,29 +179,69 @@ static void store_x11_monitor(const gsr_monitor *monitor, void *userdata) { #define GLX_CONTEXT_PRIORITY_MEDIUM_EXT 0x3102 #define GLX_CONTEXT_PRIORITY_LOW_EXT 0x3103 -static GLXFBConfig glx_fb_config_choose(gsr_egl *self) { - const int glx_visual_attribs[] = { - GLX_RENDER_TYPE, GLX_RGBA_BIT, - GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, - // TODO: - GLX_BIND_TO_TEXTURE_RGBA_EXT, 1, - GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT, - GLX_DOUBLEBUFFER, True, - GLX_RED_SIZE, 8, - GLX_GREEN_SIZE, 8, - GLX_BLUE_SIZE, 8, - GLX_ALPHA_SIZE, 0, - GLX_DEPTH_SIZE, 0, - None, None - }; - - // TODO: Cleanup - int c = 0; - GLXFBConfig *fb_configs = self->glXChooseFBConfig(self->x11.dpy, DefaultScreen(self->x11.dpy), glx_visual_attribs, &c); - if(c == 0 || !fb_configs) +static GLXFBConfig glx_fb_config_choose(gsr_egl *self, GLXFBConfig **fb_configs) { + XWindowAttributes win_attr = {0}; + if(!XGetWindowAttributes(self->x11.dpy, self->x11.window, &win_attr)) { + fprintf(stderr, "gsr error: glx_fb_config_choose: XGetWindowAttributes failed\n"); return NULL; + } + const VisualID visual_id = XVisualIDFromVisual(win_attr.visual); + + GLXFBConfig selected_fb_config = NULL; + int num_fb_configs = 0; + *fb_configs = self->glXGetFBConfigs(self->x11.dpy, DefaultScreen(self->x11.dpy), &num_fb_configs); + for(int i = 0; i < num_fb_configs; ++i) { + GLXFBConfig fb_config = (*fb_configs)[i]; + XVisualInfo *visinfo = self->glXGetVisualFromFBConfig(self->x11.dpy, fb_config); + if(!visinfo || visinfo->visualid != visual_id) + continue; + + int render_type = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_RENDER_TYPE, &render_type); + if(!(render_type & GLX_RGBA_BIT)) + continue; + + int red_size = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_RED_SIZE, &red_size); + + int green_size = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_GREEN_SIZE, &green_size); + + int blue_size = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_BLUE_SIZE, &blue_size); + + if(red_size != 8 || green_size != 8 || blue_size != 8) + continue; + + int drawable_type = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_DRAWABLE_TYPE, &drawable_type); + if(!(drawable_type & GLX_PIXMAP_BIT) || !(drawable_type & GLX_WINDOW_BIT)) + continue; + + int bind_to_texture_targets = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_BIND_TO_TEXTURE_TARGETS_EXT, &bind_to_texture_targets); + if(!(bind_to_texture_targets & GLX_TEXTURE_2D_BIT_EXT)) + continue; + + int bind_to_texture_rgba = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_BIND_TO_TEXTURE_RGBA_EXT, &bind_to_texture_rgba); + if(!bind_to_texture_rgba) { + int bind_to_texture_rgb = 0; + self->glXGetFBConfigAttrib(self->x11.dpy, fb_config, GLX_BIND_TO_TEXTURE_RGB_EXT, &bind_to_texture_rgb); + if(!bind_to_texture_rgb) + continue; + } - return fb_configs[0]; + selected_fb_config = fb_config; + break; + } + + if(!selected_fb_config) { + XFree(*fb_configs); + *fb_configs = NULL; + } + + return selected_fb_config; } // TODO: Create egl context without surface (in other words, x11/wayland agnostic, doesn't require x11/wayland dependency) @@ -308,8 +350,6 @@ static bool gsr_egl_create_window(gsr_egl *self, bool wayland) { } static bool gsr_egl_switch_to_glx_context(gsr_egl *self) { - // TODO: Cleanup - if(self->egl_context) { self->eglMakeCurrent(self->egl_display, NULL, NULL, NULL); self->eglDestroyContext(self->egl_display, self->egl_context); @@ -326,7 +366,7 @@ static bool gsr_egl_switch_to_glx_context(gsr_egl *self) { self->egl_display = NULL; } - self->glx_fb_config = glx_fb_config_choose(self); + self->glx_fb_config = glx_fb_config_choose(self, &self->glx_fb_configs); if(!self->glx_fb_config) { fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to find a suitable fb config\n"); goto fail; @@ -348,12 +388,16 @@ static bool gsr_egl_switch_to_glx_context(gsr_egl *self) { return true; fail: + if(!self->glx_fb_configs) { + XFree(self->glx_fb_configs); + self->glx_fb_configs = NULL; + } if(self->glx_context) { self->glXMakeContextCurrent(self->x11.dpy, None, None, NULL); self->glXDestroyContext(self->x11.dpy, self->glx_context); self->glx_context = NULL; - self->glx_fb_config = NULL; } + self->glx_fb_config = NULL; return false; } @@ -416,7 +460,9 @@ static bool gsr_egl_proc_load_egl(gsr_egl *self) { static bool gsr_egl_load_glx(gsr_egl *self, void *library) { const dlsym_assign required_dlsym[] = { { (void**)&self->glXGetProcAddress, "glXGetProcAddress" }, - { (void**)&self->glXChooseFBConfig, "glXChooseFBConfig" }, + { (void**)&self->glXGetFBConfigAttrib, "glXGetFBConfigAttrib" }, + { (void**)&self->glXGetFBConfigs, "glXGetFBConfigs" }, + { (void**)&self->glXGetVisualFromFBConfig, "glXGetVisualFromFBConfig" }, { (void**)&self->glXMakeContextCurrent, "glXMakeContextCurrent" }, { (void**)&self->glXCreateNewContext, "glXCreateNewContext" }, { (void**)&self->glXDestroyContext, "glXDestroyContext" }, @@ -612,11 +658,17 @@ void gsr_egl_unload(gsr_egl *self) { self->egl_display = NULL; } + if(!self->glx_fb_configs) { + XFree(self->glx_fb_configs); + self->glx_fb_configs = NULL; + } + + self->glx_fb_config = NULL; + if(self->glx_context) { self->glXMakeContextCurrent(self->x11.dpy, None, None, NULL); self->glXDestroyContext(self->x11.dpy, self->glx_context); self->glx_context = NULL; - self->glx_fb_config = NULL; } if(self->x11.window) { -- cgit v1.2.3