From ed1924800de905f5462c8cc6e36fbc60b69d3030 Mon Sep 17 00:00:00 2001
From: ayaka <ayaka@soulik.info>
Date: Fri, 9 Apr 2021 10:48:01 +0800
Subject: render: make GLES2 renderer optional

Allow selecting whether the GLES2 renderer gets enabled.

Co-authored-by: Simon Ser <contact@emersion.fr>
---
 render/gles2/meson.build  |  9 +++++++++
 render/meson.build        | 19 +++++++++++++++++--
 render/pixman/meson.build |  1 +
 render/wlr_renderer.c     | 18 +++++++++++++++---
 4 files changed, 42 insertions(+), 5 deletions(-)

(limited to 'render')

diff --git a/render/gles2/meson.build b/render/gles2/meson.build
index d4d62c64..f2cd5fba 100644
--- a/render/gles2/meson.build
+++ b/render/gles2/meson.build
@@ -1,3 +1,12 @@
+glesv2 = dependency('glesv2', required: 'gles2' in renderers)
+
+if not (glesv2.found() and egl.found())
+	subdir_done()
+endif
+
+features += { 'gles2-renderer': true }
+wlr_deps += glesv2
+
 wlr_files += files(
 	'pixel_format.c',
 	'renderer.c',
diff --git a/render/meson.build b/render/meson.build
index ab0c4424..0a53acdd 100644
--- a/render/meson.build
+++ b/render/meson.build
@@ -1,7 +1,13 @@
+renderers = get_option('renderers')
+if 'auto' in renderers and get_option('auto_features').enabled()
+	renderers = ['gles2']
+elif 'auto' in renderers and get_option('auto_features').disabled()
+	renderers = []
+endif
+
 wlr_files += files(
 	'allocator.c',
 	'dmabuf.c',
-	'egl.c',
 	'drm_format_set.c',
 	'gbm_allocator.c',
 	'pixel_format.c',
@@ -11,5 +17,14 @@ wlr_files += files(
 	'wlr_texture.c',
 )
 
-subdir('gles2')
+egl = dependency('egl', required: 'gles2' in renderers)
+if egl.found()
+	wlr_deps += egl
+	wlr_files += files('egl.c')
+endif
+
+if 'gles2' in renderers or 'auto' in renderers
+	subdir('gles2')
+endif
+
 subdir('pixman')
diff --git a/render/pixman/meson.build b/render/pixman/meson.build
index eb7a0d3a..484cda46 100644
--- a/render/pixman/meson.build
+++ b/render/pixman/meson.build
@@ -1,4 +1,5 @@
 pixman = dependency('pixman-1')
+
 wlr_deps += pixman
 
 wlr_files += files(
diff --git a/render/wlr_renderer.c b/render/wlr_renderer.c
index d520475d..77be3018 100644
--- a/render/wlr_renderer.c
+++ b/render/wlr_renderer.c
@@ -2,13 +2,19 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <gbm.h>
-#include <wlr/render/egl.h>
-#include <wlr/render/gles2.h>
-#include <wlr/render/pixman.h>
 #include <wlr/render/interface.h>
+#include <wlr/render/pixman.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_matrix.h>
 #include <wlr/util/log.h>
+
+#include <wlr/config.h>
+
+#if WLR_HAS_GLES2_RENDERER
+#include <wlr/render/egl.h>
+#include <wlr/render/gles2.h>
+#endif
+
 #include "util/signal.h"
 #include "render/pixel_format.h"
 #include "render/wlr_renderer.h"
@@ -222,6 +228,7 @@ bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
 }
 
 struct wlr_renderer *wlr_renderer_autocreate_with_drm_fd(int drm_fd) {
+#if WLR_HAS_GLES2_RENDERER
 	struct gbm_device *gbm_device = gbm_create_device(drm_fd);
 	if (!gbm_device) {
 		wlr_log(WLR_ERROR, "Failed to create GBM device");
@@ -241,9 +248,14 @@ struct wlr_renderer *wlr_renderer_autocreate_with_drm_fd(int drm_fd) {
 	if (!renderer) {
 		wlr_log(WLR_ERROR, "Failed to create GLES2 renderer");
 		wlr_egl_destroy(egl);
+		return NULL;
 	}
 
 	return renderer;
+#endif
+
+	wlr_log(WLR_ERROR, "Failed to initialize any renderer");
+	return NULL;
 }
 
 struct wlr_renderer *wlr_renderer_autocreate(struct wlr_backend *backend) {
-- 
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