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render/egl: add support for EGL_EXT_device_type

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This new EGL extension provides a standard way to fetch the type
of a device.

References: https://github.com/KhronosGroup/EGL-Registry/pull/220
This commit is contained in:
Simon Ser 2026-03-19 13:31:02 +01:00
parent abb6eeb422
commit c377f30765
2 changed files with 26 additions and 8 deletions
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1
include/render/egl.h
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@ -37,6 +37,7 @@ struct wlr_egl {
PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR; PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR;
PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT; PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT;
PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT; PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT;
PFNEGLQUERYDEVICEATTRIBEXTPROC eglQueryDeviceAttribEXT;
PFNEGLQUERYDEVICESEXTPROC eglQueryDevicesEXT; PFNEGLQUERYDEVICESEXTPROC eglQueryDevicesEXT;
PFNEGLCREATESYNCKHRPROC eglCreateSyncKHR; PFNEGLCREATESYNCKHRPROC eglCreateSyncKHR;
PFNEGLDESTROYSYNCKHRPROC eglDestroySyncKHR; PFNEGLDESTROYSYNCKHRPROC eglDestroySyncKHR;

33
render/egl.c
View file

@ -12,6 +12,13 @@
#include "render/egl.h" #include "render/egl.h"
#include "util/env.h" #include "util/env.h"
// TODO: drop
#define EGL_DEVICE_TYPE_EXT 0x3590
#define EGL_DEVICE_TYPE_OTHER_EXT 0x3591
#define EGL_DEVICE_TYPE_INTEGRATED_GPU_EXT 0x3592
#define EGL_DEVICE_TYPE_DISCRETE_GPU_EXT 0x3593
#define EGL_DEVICE_TYPE_CPU_EXT 0x3594
static enum wlr_log_importance egl_log_importance_to_wlr(EGLint type) { static enum wlr_log_importance egl_log_importance_to_wlr(EGLint type) {
switch (type) { switch (type) {
case EGL_DEBUG_MSG_CRITICAL_KHR: return WLR_ERROR; case EGL_DEBUG_MSG_CRITICAL_KHR: return WLR_ERROR;
@ -231,10 +238,9 @@ static struct wlr_egl *egl_create(void) {
if (check_egl_ext(client_exts_str, "EGL_EXT_device_base") || check_egl_ext(client_exts_str, "EGL_EXT_device_query")) { if (check_egl_ext(client_exts_str, "EGL_EXT_device_base") || check_egl_ext(client_exts_str, "EGL_EXT_device_query")) {
egl->exts.EXT_device_query = true; egl->exts.EXT_device_query = true;
load_egl_proc(&egl->procs.eglQueryDeviceStringEXT, load_egl_proc(&egl->procs.eglQueryDeviceStringEXT, "eglQueryDeviceStringEXT");
"eglQueryDeviceStringEXT"); load_egl_proc(&egl->procs.eglQueryDeviceAttribEXT, "eglQueryDeviceAttribEXT");
load_egl_proc(&egl->procs.eglQueryDisplayAttribEXT, load_egl_proc(&egl->procs.eglQueryDisplayAttribEXT, "eglQueryDisplayAttribEXT");
"eglQueryDisplayAttribEXT");
} }
if (check_egl_ext(client_exts_str, "EGL_KHR_debug")) { if (check_egl_ext(client_exts_str, "EGL_KHR_debug")) {
@ -260,6 +266,19 @@ static struct wlr_egl *egl_create(void) {
return egl; return egl;
} }
static bool device_is_software(struct wlr_egl *egl, EGLDeviceEXT *device,
const char *device_exts_str) {
if (check_egl_ext(device_exts_str, "EGL_EXT_device_type")) {
EGLAttrib device_type;
if (!egl->procs.eglQueryDeviceAttribEXT(egl->device, EGL_DEVICE_TYPE_EXT, &device_type)) {
wlr_log(WLR_ERROR, "eglQueryDeviceAttribEXT(EGL_DEVICE_TYPE_EXT) failed");
} else {
return device_type == EGL_DEVICE_TYPE_CPU_EXT;
}
}
return check_egl_ext(device_exts_str, "EGL_MESA_device_software");
}
static bool egl_init_display(struct wlr_egl *egl, EGLDisplay display, static bool egl_init_display(struct wlr_egl *egl, EGLDisplay display,
bool allow_software) { bool allow_software) {
egl->display = display; egl->display = display;
@ -327,7 +346,7 @@ static bool egl_init_display(struct wlr_egl *egl, EGLDisplay display,
// The only way a non-DRM device is selected is when the user // The only way a non-DRM device is selected is when the user
// explicitly picks software rendering // explicitly picks software rendering
if (check_egl_ext(device_exts_str, "EGL_MESA_device_software")) { if (device_is_software(egl, egl->device, device_exts_str)) {
if (allow_software || env_parse_bool("WLR_RENDERER_ALLOW_SOFTWARE")) { if (allow_software || env_parse_bool("WLR_RENDERER_ALLOW_SOFTWARE")) {
wlr_log(WLR_INFO, "Using software rendering"); wlr_log(WLR_INFO, "Using software rendering");
} else { } else {
@ -510,13 +529,11 @@ static EGLDeviceEXT get_egl_device_from_drm_fd(struct wlr_egl *egl,
} }
} }
bool is_software = check_egl_ext(device_exts_str, "EGL_MESA_device_software");
bool found; bool found;
if (selected_drm_device != NULL) { if (selected_drm_device != NULL) {
found = egl_device_name != NULL && device_has_name(selected_drm_device, egl_device_name); found = egl_device_name != NULL && device_has_name(selected_drm_device, egl_device_name);
} else { } else {
found = is_software; found = device_is_software(egl, devices[i], device_exts_str);
} }
if (found) { if (found) {
if (egl_device_name != NULL) { if (egl_device_name != NULL) {