render: drop wlr_renderer_impl.init_wl_display

Now that we have our own wl_drm implementation, there's no reason
to provide custom renderer hooks to init a wl_display in the
interface. We can just initialize the wl_display generically,
depending on the renderer capabilities.

include/wlr/render/interface.h

@@ -44,8 +44,6 @@ struct wlr_renderer_impl {
 		uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
 		void *data);
 	void (*destroy)(struct wlr_renderer *renderer);
-	bool (*init_wl_display)(struct wlr_renderer *renderer,
-		struct wl_display *wl_display);
 	int (*get_drm_fd)(struct wlr_renderer *renderer);
 	uint32_t (*get_render_buffer_caps)(struct wlr_renderer *renderer);
 	struct wlr_texture *(*texture_from_buffer)(struct wlr_renderer *renderer,

render/gles2/renderer.c

@@ -12,9 +12,7 @@
 #include <wlr/render/egl.h>
 #include <wlr/render/interface.h>
 #include <wlr/render/wlr_renderer.h>
-#include <wlr/types/wlr_drm.h>
 #include <wlr/types/wlr_matrix.h>
-#include <wlr/types/wlr_linux_dmabuf_v1.h>
 #include <wlr/util/box.h>
 #include <wlr/util/log.h>
 #include "render/egl.h"
@@ -481,23 +479,6 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
 	return glGetError() == GL_NO_ERROR;
 }
 
-static bool gles2_init_wl_display(struct wlr_renderer *wlr_renderer,
-		struct wl_display *wl_display) {
-	if (wlr_renderer_get_drm_fd(wlr_renderer) >= 0) {
-		if (wlr_drm_create(wl_display, wlr_renderer) == NULL) {
-			return false;
-		}
-	} else {
-		wlr_log(WLR_INFO, "Cannot get renderer DRM FD, disabling wl_drm");
-	}
-
-	if (wlr_linux_dmabuf_v1_create(wl_display, wlr_renderer) == NULL) {
-		return false;
-	}
-
-	return true;
-}
-
 static int gles2_get_drm_fd(struct wlr_renderer *wlr_renderer) {
 	struct wlr_gles2_renderer *renderer =
 		gles2_get_renderer(wlr_renderer);
@@ -570,7 +551,6 @@ static const struct wlr_renderer_impl renderer_impl = {
 	.get_render_formats = gles2_get_render_formats,
 	.preferred_read_format = gles2_preferred_read_format,
 	.read_pixels = gles2_read_pixels,
-	.init_wl_display = gles2_init_wl_display,
 	.get_drm_fd = gles2_get_drm_fd,
 	.get_render_buffer_caps = gles2_get_render_buffer_caps,
 	.texture_from_buffer = gles2_texture_from_buffer,

render/wlr_renderer.c

@@ -4,6 +4,8 @@
 #include <wlr/render/interface.h>
 #include <wlr/render/pixman.h>
 #include <wlr/render/wlr_renderer.h>
+#include <wlr/types/wlr_drm.h>
+#include <wlr/types/wlr_linux_dmabuf_v1.h>
 #include <wlr/types/wlr_matrix.h>
 #include <wlr/util/box.h>
 #include <wlr/util/log.h>
@@ -223,8 +225,16 @@ bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
 	}
 	assert(argb8888 && xrgb8888);
 
-	if (r->impl->init_wl_display) {
-		if (!r->impl->init_wl_display(r, wl_display)) {
+	if (wlr_renderer_get_dmabuf_texture_formats(r) != NULL) {
+		if (wlr_renderer_get_drm_fd(r) >= 0) {
+			if (wlr_drm_create(wl_display, r) == NULL) {
+				return false;
+			}
+		} else {
+			wlr_log(WLR_INFO, "Cannot get renderer DRM FD, disabling wl_drm");
+		}
+
+		if (wlr_linux_dmabuf_v1_create(wl_display, r) == NULL) {
 			return false;
 		}
 	}