diff options
Diffstat (limited to 'render/egl.c')
| -rw-r--r-- | render/egl.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/render/egl.c b/render/egl.c index f99b37f9..c23d81da 100644 --- a/render/egl.c +++ b/render/egl.c @@ -1,10 +1,14 @@ +#define _POSIX_C_SOURCE 200809L #include <assert.h> #include <drm_fourcc.h> +#include <fcntl.h> #include <stdio.h> #include <stdlib.h> +#include <unistd.h> #include <wlr/render/egl.h> #include <wlr/util/log.h> #include <wlr/util/region.h> +#include <xf86drm.h> static bool egl_get_config(EGLDisplay disp, const EGLint *attribs, EGLConfig *out, EGLint visual_id) { @@ -289,6 +293,32 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display, "eglQueryWaylandBufferWL"); } + const char *device_exts_str = NULL; + if (check_egl_ext(client_exts_str, "EGL_EXT_device_query")) { + load_egl_proc(&egl->procs.eglQueryDisplayAttribEXT, + "eglQueryDisplayAttribEXT"); + load_egl_proc(&egl->procs.eglQueryDeviceStringEXT, + "eglQueryDeviceStringEXT"); + + EGLAttrib device_attrib; + if (!egl->procs.eglQueryDisplayAttribEXT(egl->display, + EGL_DEVICE_EXT, &device_attrib)) { + wlr_log(WLR_ERROR, "eglQueryDisplayAttribEXT(EGL_DEVICE_EXT) failed"); + goto error; + } + egl->device = (EGLDeviceEXT)device_attrib; + + device_exts_str = + egl->procs.eglQueryDeviceStringEXT(egl->device, EGL_EXTENSIONS); + if (device_exts_str == NULL) { + wlr_log(WLR_ERROR, "eglQueryDeviceStringEXT(EGL_EXTENSIONS) failed"); + goto error; + } + + egl->exts.device_drm_ext = + check_egl_ext(device_exts_str, "EGL_EXT_device_drm"); + } + if (!egl_get_config(egl->display, config_attribs, &egl->config, visual_id)) { wlr_log(WLR_ERROR, "Failed to get EGL config"); goto error; @@ -297,6 +327,9 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display, wlr_log(WLR_INFO, "Using EGL %d.%d", (int)major, (int)minor); wlr_log(WLR_INFO, "Supported EGL client extensions: %s", client_exts_str); wlr_log(WLR_INFO, "Supported EGL display extensions: %s", display_exts_str); + if (device_exts_str != NULL) { + wlr_log(WLR_INFO, "Supported EGL device extensions: %s", device_exts_str); + } wlr_log(WLR_INFO, "EGL vendor: %s", eglQueryString(egl->display, EGL_VENDOR)); init_dmabuf_formats(egl); @@ -818,3 +851,39 @@ bool wlr_egl_destroy_surface(struct wlr_egl *egl, EGLSurface surface) { } return eglDestroySurface(egl->display, surface); } + +int wlr_egl_dup_drm_fd(struct wlr_egl *egl) { + if (egl->device == EGL_NO_DEVICE_EXT || !egl->exts.device_drm_ext) { + return -1; + } + + const char *primary_name = egl->procs.eglQueryDeviceStringEXT(egl->device, + EGL_DRM_DEVICE_FILE_EXT); + if (primary_name == NULL) { + wlr_log(WLR_ERROR, + "eglQueryDeviceStringEXT(EGL_DRM_DEVICE_FILE_EXT) failed"); + return -1; + } + + int primary_fd = open(primary_name, O_RDWR | O_NONBLOCK | O_CLOEXEC); + if (primary_fd < 0) { + wlr_log_errno(WLR_ERROR, "Failed to open primary DRM device"); + return -1; + } + + char *render_name = drmGetRenderDeviceNameFromFd(primary_fd); + if (render_name == NULL) { + wlr_log_errno(WLR_ERROR, "drmGetRenderDeviceNameFromFd failed"); + close(primary_fd); + return -1; + } + close(primary_fd); + + int render_fd = open(render_name, O_RDWR | O_NONBLOCK | O_CLOEXEC); + if (render_fd < 0) { + wlr_log_errno(WLR_ERROR, "Failed to open render DRM device"); + return -1; + } + + return render_fd; +} |