render/egl: add wlr_egl_create_image_from_wl_drm

This allows external renderers and potential future GL-based
renderers to re-use this function.

include/wlr/render/egl.h

@@ -28,21 +28,22 @@ struct wlr_egl {
 
 // TODO: Allocate and return a wlr_egl
 /**
- *  Initializes an egl context for the given platform and remote display.
+ * Initializes an EGL context for the given platform and remote display.
  * Will attempt to load all possibly required api functions.
  */
 bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display,
 	EGLint *config_attribs, EGLint visual_id);
 
 /**
- * Frees all related egl resources, makes the context not-current and
+ * Frees all related EGL resources, makes the context not-current and
  * unbinds a bound wayland display.
  */
 void wlr_egl_finish(struct wlr_egl *egl);
 
 /**
- * Binds the given display to the egl instance.
+ * Binds the given display to the EGL instance.
- * This will allow clients to create egl surfaces from wayland ones and render to it.
+ * This will allow clients to create EGL surfaces from wayland ones and render
+ * to it.
  */
 bool wlr_egl_bind_display(struct wlr_egl *egl, struct wl_display *local_display);
 
@@ -53,7 +54,14 @@ bool wlr_egl_bind_display(struct wlr_egl *egl, struct wl_display *local_display)
 EGLSurface wlr_egl_create_surface(struct wlr_egl *egl, void *window);
 
 /**
- * Creates an egl image from the given dmabuf attributes. Check usability
+ * Creates an EGL image from the given wl_drm buffer resource.
+ */
+EGLImageKHR wlr_egl_create_image_from_wl_drm(struct wlr_egl *egl,
+	struct wl_resource *data, EGLint *fmt, int *width, int *height,
+	bool *inverted_y);
+
+/**
+ * Creates an EGL image from the given dmabuf attributes. Check usability
  * of the dmabuf with wlr_egl_check_import_dmabuf once first.
  */
 EGLImageKHR wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
@@ -78,7 +86,7 @@ int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl, int format,
 		uint64_t **modifiers);
 
 /**
- * Destroys an egl image created with the given wlr_egl.
+ * Destroys an EGL image created with the given wlr_egl.
  */
 bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImageKHR image);
 

include/wlr/render/wlr_texture.h

@@ -23,7 +23,7 @@ struct wlr_texture *wlr_texture_from_pixels(struct wlr_renderer *renderer,
 	const void *data);
 
 /**
- * Create a new texture from a wayland DRM resource. The returned texture is
+ * Create a new texture from a wl_drm resource. The returned texture is
  * immutable.
  */
 struct wlr_texture *wlr_texture_from_wl_drm(struct wlr_renderer *renderer,

render/egl.c

@@ -93,7 +93,8 @@ static void print_dmabuf_formats(struct wlr_egl *egl) {
 
 	char str_formats[num * 5 + 1];
 	for (int i = 0; i < num; i++) {
-		snprintf(&str_formats[i*5], (num - i) * 5 + 1, "%.4s ", (char*)&formats[i]);
+		snprintf(&str_formats[i*5], (num - i) * 5 + 1, "%.4s ",
+			(char*)&formats[i]);
 	}
 	wlr_log(L_DEBUG, "Supported dmabuf buffer formats: %s", str_formats);
 	free(formats);
@@ -230,8 +231,9 @@ bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImage image) {
 }
 
 EGLSurface wlr_egl_create_surface(struct wlr_egl *egl, void *window) {
-	EGLSurface surf = eglCreatePlatformWindowSurfaceEXT(egl->display, egl->config,
+	assert(eglCreatePlatformWindowSurfaceEXT);
-		window, NULL);
+	EGLSurface surf = eglCreatePlatformWindowSurfaceEXT(egl->display,
+		egl->config, window, NULL);
 	if (surf == EGL_NO_SURFACE) {
 		wlr_log(L_ERROR, "Failed to create EGL surface");
 		return EGL_NO_SURFACE;
@@ -302,7 +304,37 @@ bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
 	return true;
 }
 
-EGLImage wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
+EGLImageKHR wlr_egl_create_image_from_wl_drm(struct wlr_egl *egl,
+		struct wl_resource *data, EGLint *fmt, int *width, int *height,
+		bool *inverted_y) {
+	if (!eglQueryWaylandBufferWL || !eglCreateImageKHR) {
+		return NULL;
+	}
+
+	if (!eglQueryWaylandBufferWL(egl->display, data, EGL_TEXTURE_FORMAT, fmt)) {
+		return NULL;
+	}
+
+	eglQueryWaylandBufferWL(egl->display, data, EGL_WIDTH, width);
+	eglQueryWaylandBufferWL(egl->display, data, EGL_HEIGHT, height);
+
+	EGLint _inverted_y;
+	if (eglQueryWaylandBufferWL(egl->display, data, EGL_WAYLAND_Y_INVERTED_WL,
+			&_inverted_y)) {
+		*inverted_y = !!_inverted_y;
+	} else {
+		*inverted_y = false;
+	}
+
+	const EGLint attribs[] = {
+		EGL_WAYLAND_PLANE_WL, 0,
+		EGL_NONE,
+	};
+	return eglCreateImageKHR(egl->display, egl->context, EGL_WAYLAND_BUFFER_WL,
+		data, attribs);
+}
+
+EGLImageKHR wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
 		struct wlr_dmabuf_buffer_attribs *attributes) {
 	bool has_modifier = false;
 	if (attributes->modifier[0] != DRM_FORMAT_MOD_INVALID) {

render/gles2/texture.c

@@ -90,7 +90,7 @@ static void gles2_texture_destroy(struct wlr_texture *wlr_texture) {
 	}
 	if (texture->image) {
 		assert(eglDestroyImageKHR);
-		eglDestroyImageKHR(texture->renderer->egl->display, texture->image);
+		wlr_egl_destroy_image(texture->renderer->egl, texture->image);
 	}
 
 	if (texture->type == WLR_GLES2_TEXTURE_GLTEX) {
@@ -144,34 +144,17 @@ struct wlr_texture *gles2_texture_from_pixels(struct wlr_renderer *wlr_renderer,
 	glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
 
 	GLES2_DEBUG_POP;
-	return (struct wlr_texture *)texture;
+	return &texture->wlr_texture;
 }
 
 struct wlr_texture *gles2_texture_from_wl_drm(struct wlr_renderer *wlr_renderer,
 		struct wl_resource *data) {
 	struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
 
-	if (!eglQueryWaylandBufferWL || !eglCreateImageKHR ||
+	if (!glEGLImageTargetTexture2DOES) {
-			!glEGLImageTargetTexture2DOES) {
 		return NULL;
 	}
 
-	EGLint fmt;
-	if (!eglQueryWaylandBufferWL(renderer->egl->display, data,
-			EGL_TEXTURE_FORMAT, &fmt)) {
-		return NULL;
-	}
-
-	EGLint width, height;
-	eglQueryWaylandBufferWL(renderer->egl->display, data, EGL_WIDTH, &width);
-	eglQueryWaylandBufferWL(renderer->egl->display, data, EGL_HEIGHT, &height);
-
-	EGLint inverted_y;
-	if (!eglQueryWaylandBufferWL(renderer->egl->display, data,
-			EGL_WAYLAND_Y_INVERTED_WL, &inverted_y)) {
-		inverted_y = 0;
-	}
-
 	struct wlr_gles2_texture *texture =
 		calloc(1, sizeof(struct wlr_gles2_texture));
 	if (texture == NULL) {
@@ -180,10 +163,15 @@ struct wlr_texture *gles2_texture_from_wl_drm(struct wlr_renderer *wlr_renderer,
 	}
 	wlr_texture_init(&texture->wlr_texture, &texture_impl);
 	texture->renderer = renderer;
-	texture->width = width;
-	texture->height = height;
 	texture->wl_drm = data;
-	texture->inverted_y = !!inverted_y;
+
+	EGLint fmt;
+	texture->image = wlr_egl_create_image_from_wl_drm(renderer->egl, data, &fmt,
+		&texture->width, &texture->height, &texture->inverted_y);
+	if (texture->image == NULL) {
+		free(texture);
+		return NULL;
+	}
 
 	GLenum target;
 	switch (fmt) {
@@ -204,17 +192,6 @@ struct wlr_texture *gles2_texture_from_wl_drm(struct wlr_renderer *wlr_renderer,
 		return NULL;
 	}
 
-	EGLint attribs[] = {
-		EGL_WAYLAND_PLANE_WL, 0,
-		EGL_NONE,
-	};
-	texture->image = eglCreateImageKHR(renderer->egl->display,
-		renderer->egl->context, EGL_WAYLAND_BUFFER_WL, data, attribs);
-	if (texture->image == NULL) {
-		free(texture);
-		return NULL;
-	}
-
 	GLES2_DEBUG_PUSH;
 
 	glGenTextures(1, &texture->image_tex);
@@ -222,7 +199,7 @@ struct wlr_texture *gles2_texture_from_wl_drm(struct wlr_renderer *wlr_renderer,
 	glEGLImageTargetTexture2DOES(target, texture->image);
 
 	GLES2_DEBUG_POP;
-	return (struct wlr_texture *)texture;
+	return &texture->wlr_texture;
 }
 
 struct wlr_texture *gles2_texture_from_dmabuf(struct wlr_renderer *wlr_renderer,
@@ -267,5 +244,5 @@ struct wlr_texture *gles2_texture_from_dmabuf(struct wlr_renderer *wlr_renderer,
 	glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, texture->image);
 
 	GLES2_DEBUG_POP;
-	return (struct wlr_texture *)texture;
+	return &texture->wlr_texture;
 }