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https://github.com/hyprwm/wlroots-hyprland.git
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render/egl: introduce wlr_egl_dup_drm_fd
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eef8b3dde8
commit
c8d95acc37
2 changed files with 78 additions and 0 deletions
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@ -45,8 +45,10 @@ struct wlr_egl {
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EGLDisplay display;
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EGLConfig config;
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EGLContext context;
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EGLDeviceEXT device; // may be EGL_NO_DEVICE_EXT
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struct {
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// Display extensions
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bool bind_wayland_display_wl;
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bool buffer_age_ext;
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bool image_base_khr;
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@ -54,6 +56,9 @@ struct wlr_egl {
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bool image_dmabuf_import_ext;
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bool image_dmabuf_import_modifiers_ext;
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bool swap_buffers_with_damage;
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// Device extensions
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bool device_drm_ext;
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} exts;
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struct {
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@ -70,6 +75,8 @@ struct wlr_egl {
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PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC eglExportDMABUFImageQueryMESA;
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PFNEGLEXPORTDMABUFIMAGEMESAPROC eglExportDMABUFImageMESA;
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PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR;
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PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT;
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PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT;
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} procs;
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struct wl_display *wl_display;
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@ -164,4 +171,6 @@ bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
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bool wlr_egl_destroy_surface(struct wlr_egl *egl, EGLSurface surface);
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int wlr_egl_dup_drm_fd(struct wlr_egl *egl);
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#endif
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69
render/egl.c
69
render/egl.c
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@ -1,10 +1,14 @@
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#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <drm_fourcc.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wlr/render/egl.h>
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#include <wlr/util/log.h>
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#include <wlr/util/region.h>
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#include <xf86drm.h>
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static bool egl_get_config(EGLDisplay disp, const EGLint *attribs,
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EGLConfig *out, EGLint visual_id) {
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@ -289,6 +293,32 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display,
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"eglQueryWaylandBufferWL");
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}
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const char *device_exts_str = NULL;
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if (check_egl_ext(client_exts_str, "EGL_EXT_device_query")) {
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load_egl_proc(&egl->procs.eglQueryDisplayAttribEXT,
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"eglQueryDisplayAttribEXT");
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load_egl_proc(&egl->procs.eglQueryDeviceStringEXT,
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"eglQueryDeviceStringEXT");
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EGLAttrib device_attrib;
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if (!egl->procs.eglQueryDisplayAttribEXT(egl->display,
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EGL_DEVICE_EXT, &device_attrib)) {
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wlr_log(WLR_ERROR, "eglQueryDisplayAttribEXT(EGL_DEVICE_EXT) failed");
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goto error;
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}
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egl->device = (EGLDeviceEXT)device_attrib;
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device_exts_str =
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egl->procs.eglQueryDeviceStringEXT(egl->device, EGL_EXTENSIONS);
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if (device_exts_str == NULL) {
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wlr_log(WLR_ERROR, "eglQueryDeviceStringEXT(EGL_EXTENSIONS) failed");
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goto error;
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}
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egl->exts.device_drm_ext =
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check_egl_ext(device_exts_str, "EGL_EXT_device_drm");
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}
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if (!egl_get_config(egl->display, config_attribs, &egl->config, visual_id)) {
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wlr_log(WLR_ERROR, "Failed to get EGL config");
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goto error;
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@ -297,6 +327,9 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display,
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wlr_log(WLR_INFO, "Using EGL %d.%d", (int)major, (int)minor);
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wlr_log(WLR_INFO, "Supported EGL client extensions: %s", client_exts_str);
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wlr_log(WLR_INFO, "Supported EGL display extensions: %s", display_exts_str);
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if (device_exts_str != NULL) {
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wlr_log(WLR_INFO, "Supported EGL device extensions: %s", device_exts_str);
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}
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wlr_log(WLR_INFO, "EGL vendor: %s", eglQueryString(egl->display, EGL_VENDOR));
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init_dmabuf_formats(egl);
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@ -818,3 +851,39 @@ bool wlr_egl_destroy_surface(struct wlr_egl *egl, EGLSurface surface) {
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}
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return eglDestroySurface(egl->display, surface);
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}
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int wlr_egl_dup_drm_fd(struct wlr_egl *egl) {
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if (egl->device == EGL_NO_DEVICE_EXT || !egl->exts.device_drm_ext) {
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return -1;
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}
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const char *primary_name = egl->procs.eglQueryDeviceStringEXT(egl->device,
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EGL_DRM_DEVICE_FILE_EXT);
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if (primary_name == NULL) {
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wlr_log(WLR_ERROR,
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"eglQueryDeviceStringEXT(EGL_DRM_DEVICE_FILE_EXT) failed");
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return -1;
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}
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int primary_fd = open(primary_name, O_RDWR | O_NONBLOCK | O_CLOEXEC);
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if (primary_fd < 0) {
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wlr_log_errno(WLR_ERROR, "Failed to open primary DRM device");
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return -1;
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}
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char *render_name = drmGetRenderDeviceNameFromFd(primary_fd);
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if (render_name == NULL) {
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wlr_log_errno(WLR_ERROR, "drmGetRenderDeviceNameFromFd failed");
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close(primary_fd);
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return -1;
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}
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close(primary_fd);
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int render_fd = open(render_name, O_RDWR | O_NONBLOCK | O_CLOEXEC);
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if (render_fd < 0) {
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wlr_log_errno(WLR_ERROR, "Failed to open render DRM device");
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return -1;
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}
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return render_fd;
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}
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