Refactor EGL handling

include/backend/drm.h

@@ -12,9 +12,9 @@
 
 #include <wlr/backend/session.h>
 #include <wlr/backend/drm.h>
+#include <wlr/egl.h>
 #include <wlr/util/list.h>
 
-#include <backend/egl.h>
 #include <backend/udev.h>
 #include "drm-properties.h"
 

include/backend/wayland.h

@@ -4,10 +4,10 @@
 #include <wayland-client.h>
 #include <wayland-server.h>
 #include <wayland-egl.h>
+#include <wlr/egl.h>
 #include <wlr/backend/wayland.h>
 #include <wlr/types/wlr_input_device.h>
 #include <wlr/util/list.h>
-#include "backend/egl.h"
 
 struct wlr_backend_state {
 	/* local state */

include/render/gles2.h

@@ -7,6 +7,8 @@
 #include <GLES2/gl2ext.h>
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
+#include <wlr/egl.h>
+#include <wlr/backend.h>
 #include <wlr/render.h>
 #include <wlr/util/log.h>
 
@@ -19,8 +21,14 @@ struct pixel_format {
 	GLuint *shader;
 };
 
+struct wlr_renderer_state {
+	struct wlr_renderer *renderer;
+	struct wlr_egl *egl;
+};
+
 struct wlr_texture_state {
 	struct wlr_texture *wlr_texture;
+	struct wlr_egl *egl;
 	GLuint tex_id;
 	const struct pixel_format *pixel_format;
 	EGLImageKHR image;

include/wlr/backend.h

@@ -3,6 +3,7 @@
 
 #include <wayland-server.h>
 #include <wlr/backend/session.h>
+#include <wlr/egl.h>
 
 struct wlr_backend_impl;
 struct wlr_backend_state;
@@ -22,5 +23,6 @@ struct wlr_backend {
 struct wlr_backend *wlr_backend_autocreate(struct wl_display *display);
 bool wlr_backend_init(struct wlr_backend *backend);
 void wlr_backend_destroy(struct wlr_backend *backend);
+struct wlr_egl *wlr_backend_get_egl(struct wlr_backend *backend);
 
 #endif

include/wlr/backend/interface.h

@@ -3,12 +3,14 @@
 
 #include <stdbool.h>
 #include <wlr/backend.h>
+#include <wlr/egl.h>
 
 struct wlr_backend_state;
 
 struct wlr_backend_impl {
 	bool (*init)(struct wlr_backend_state *state);
 	void (*destroy)(struct wlr_backend_state *state);
+	struct wlr_egl *(*get_egl)(struct wlr_backend_state *state);
 };
 
 struct wlr_backend *wlr_backend_create(const struct wlr_backend_impl *impl,

include/wlr/egl.h

@@ -1,5 +1,5 @@
-#ifndef WLR_BACKEND_EGL_H
-#define WLR_BACKEND_EGL_H
+#ifndef WLR_EGL_H
+#define WLR_EGL_H
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
@@ -10,12 +10,22 @@ struct wlr_egl {
 	EGLConfig config;
 	EGLContext context;
 
+	PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display;
+	PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC create_platform_window_surface;
+
+	PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
+	PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
+	PFNEGLQUERYWAYLANDBUFFERWL eglQueryWaylandBufferWL;
+	PFNEGLBINDWAYLANDDISPLAYWL eglBindWaylandDisplayWL;
+	PFNEGLUNBINDWAYLANDDISPLAYWL eglUnbindWaylandDisplayWL;
+
 	const char *egl_exts;
 	const char *gl_exts;
 
 	struct wl_display *wl_display;
 };
 
+// TODO: Allocate and return a wlr_egl
 /**
  *  Initializes an egl context for the given platform and remote display.
  * Will attempt to load all possibly required api functions.
@@ -35,15 +45,9 @@ void wlr_egl_free(struct wlr_egl *egl);
 bool wlr_egl_bind_display(struct wlr_egl *egl, struct wl_display *local_display);
 
 /**
- * Queries information about the given (potential egl/drm) buffer, returns
- * the information in value.
- * Refer to eglQueryWaylandBufferWL for more information about attrib and value.
- * Makes only sense when a wl_display was bound to it since otherwise there
- * cannot be any egl/drm buffers.
- * Will only work after a wlr_egl objct was initialized and if the needed egl extension
- * is present.
+ * Refer to the eglQueryWaylandBufferWL extension function.
  */
-bool wlr_egl_query_buffer(struct wl_resource *buf,
+bool wlr_egl_query_buffer(struct wlr_egl *egl, struct wl_resource *buf,
 	EGLint attrib, EGLint *value);
 
 /**
@@ -54,16 +58,14 @@ EGLSurface wlr_egl_create_surface(struct wlr_egl *egl, void *window);
 
 /**
  * Creates an egl image from the given client buffer and attributes.
- * Will only work after a wlr_egl objct was initialized and if the needed egl extension
- * is present.
  */
-EGLImageKHR wlr_egl_create_image(EGLenum target, EGLClientBuffer buffer,
-	const EGLint *attribs);
+EGLImageKHR wlr_egl_create_image(struct wlr_egl *egl,
+		EGLenum target, EGLClientBuffer buffer, const EGLint *attribs);
 
 /**
  * Destroys an egl image created with the given wlr_egl.
  */
-bool wlr_egl_destroy_image(EGLImageKHR image);
+bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImageKHR image);
 
 /**
  * Returns a string for the last error ocurred with egl.

include/wlr/render.h

@@ -43,6 +43,11 @@ void wlr_render_colored_ellipse(struct wlr_renderer *r,
  */
 const enum wl_shm_format *wlr_renderer_get_formats(
 		struct wlr_renderer *r, size_t *len);
+/**
+ * Returns true if this wl_buffer is a DRM buffer.
+ */
+bool wlr_renderer_buffer_is_drm(struct wlr_renderer *renderer,
+		struct wl_resource *buffer);
 /**
  * Destroys this wlr_renderer. Textures must be destroyed separately.
  */

include/wlr/render/gles2.h

@@ -1,8 +1,9 @@
 #ifndef _WLR_GLES2_RENDERER_H
 #define _WLR_GLES2_RENDERER_H
 #include <wlr/render.h>
+#include <wlr/backend.h>
 
 struct wlr_egl;
-struct wlr_renderer *wlr_gles2_renderer_init();
+struct wlr_renderer *wlr_gles2_renderer_init(struct wlr_backend *backend);
 
 #endif

include/wlr/render/interface.h

@@ -25,6 +25,8 @@ struct wlr_renderer_impl {
 		const float (*color)[4], const float (*matrix)[16]);
 	const enum wl_shm_format *(*formats)(
 		struct wlr_renderer_state *state, size_t *len);
+	bool (*buffer_is_drm)(struct wlr_renderer_state *state,
+		struct wl_resource *buffer);
 	void (*destroy)(struct wlr_renderer_state *state);
 };
 

include/wlr/types/wlr_surface.h

@@ -29,6 +29,7 @@ struct wlr_surface_state {
 
 struct wlr_surface {
 	struct wl_resource *resource;
+	struct wlr_renderer *renderer;
 	struct wlr_texture *texture;
 	struct wlr_surface_state current, pending;
 	const char *role; // the lifetime-bound role or null