render: introduce WLR_RENDERER in wlr_renderer_autocreate_with_drm_fd
This env var forces the creation of a specific renderer. If no renderer is specified, the function will try to create all of the renderers one by one until one is created successfuly.
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@ -9,6 +9,8 @@ wlroots reads these environment variables
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* *WLR_DIRECT_TTY*: specifies the tty to be used (instead of using /dev/tty)
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* *WLR_XWAYLAND*: specifies the path to an Xwayland binary to be used (instead
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of following shell search semantics for "Xwayland")
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* *WLR_RENDERER*: forces the creation of a specified renderer (available
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renderers: gles2, pixman)
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## DRM backend
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@ -1,7 +1,6 @@
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#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <gbm.h>
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#include <wlr/render/interface.h>
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#include <wlr/render/pixman.h>
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#include <wlr/render/wlr_renderer.h>
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@ -228,33 +227,35 @@ bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
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}
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struct wlr_renderer *wlr_renderer_autocreate_with_drm_fd(int drm_fd) {
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const char *name = getenv("WLR_RENDERER");
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if (name) {
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#if WLR_HAS_GLES2_RENDERER
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struct gbm_device *gbm_device = gbm_create_device(drm_fd);
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if (!gbm_device) {
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wlr_log(WLR_ERROR, "Failed to create GBM device");
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if (strcmp(name, "gles2") == 0) {
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return wlr_gles2_renderer_create_with_drm_fd(drm_fd);
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}
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#endif
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if (strcmp(name, "pixman") == 0) {
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return wlr_pixman_renderer_create();
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}
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wlr_log(WLR_ERROR, "Invalid WLR_RENDERER value: '%s'", name);
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return NULL;
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}
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struct wlr_egl *egl = wlr_egl_create(EGL_PLATFORM_GBM_KHR, gbm_device);
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if (egl == NULL) {
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wlr_log(WLR_ERROR, "Could not initialize EGL");
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gbm_device_destroy(gbm_device);
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return NULL;
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struct wlr_renderer *renderer = NULL;
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#if WLR_HAS_GLES2_RENDERER
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if ((renderer = wlr_gles2_renderer_create_with_drm_fd(drm_fd)) != NULL) {
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return renderer;
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}
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egl->gbm_device = gbm_device;
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struct wlr_renderer *renderer = wlr_gles2_renderer_create(egl);
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if (!renderer) {
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wlr_log(WLR_ERROR, "Failed to create GLES2 renderer");
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wlr_egl_destroy(egl);
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return NULL;
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}
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return renderer;
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wlr_log(WLR_DEBUG, "Failed to create gles2 renderer");
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#endif
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wlr_log(WLR_ERROR, "Failed to initialize any renderer");
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if ((renderer = wlr_pixman_renderer_create()) != NULL) {
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return renderer;
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}
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wlr_log(WLR_DEBUG, "Failed to create pixman renderer");
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wlr_log(WLR_ERROR, "Could not initialize renderer");
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return NULL;
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}
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