From: Matthias Clasen <mclasen@redhat.com>
Date: Thu, 19 Oct 2023 17:54:14 +0000 (-0400)
Subject: glcontext: Check for GL_EXT_texture_format_BGRA8888
X-Git-Tag: archive/raspbian/4.12.4+ds-3+rpi1^2~21^2^2~27^2~4
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=9c6a4c3d28371e8745254c58821d04105230c6a7;p=gtk4.git

glcontext: Check for GL_EXT_texture_format_BGRA8888

Check for this GLES extension and add a private getter.
---

diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index 31c39467e5..3368310f9d 100644
--- a/gdk/gdkglcontext.c
+++ b/gdk/gdkglcontext.c
@@ -109,6 +109,7 @@ typedef struct {
   guint has_sync : 1;
   guint has_unpack_subimage : 1;
   guint has_debug_output : 1;
+  guint has_bgra : 1;
   guint extensions_checked : 1;
   guint debug_enabled : 1;
   guint forward_compatible : 1;
@@ -1531,11 +1532,13 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
       priv->has_unpack_subimage = gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)) ||
                                   epoxy_has_gl_extension ("GL_EXT_unpack_subimage");
       priv->has_khr_debug = epoxy_has_gl_extension ("GL_KHR_debug");
+      priv->has_bgra = epoxy_has_gl_extension ("GL_EXT_texture_format_BGRA8888");
     }
   else
     {
       priv->has_unpack_subimage = TRUE;
       priv->has_khr_debug = epoxy_has_gl_extension ("GL_KHR_debug");
+      priv->has_bgra = TRUE;
 
       /* We asked for a core profile, but we didn't get one, so we're in legacy mode */
       if (!gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 2)))
@@ -1567,7 +1570,8 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
                        " - GL_KHR_debug: %s\n"
                        " - GL_EXT_unpack_subimage: %s\n"
                        " - half float: %s\n"
-                       " - sync: %s",
+                       " - sync: %s\n"
+                       " - bgra: %s",
                        gdk_gl_context_get_use_es (context) ? "OpenGL ES" : "OpenGL",
                        gdk_gl_version_get_major (&priv->gl_version), gdk_gl_version_get_minor (&priv->gl_version),
                        priv->is_legacy ? "legacy" : "core",
@@ -1576,7 +1580,8 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
                        priv->has_khr_debug ? "yes" : "no",
                        priv->has_unpack_subimage ? "yes" : "no",
                        priv->has_half_float ? "yes" : "no",
-                       priv->has_sync ? "yes" : "no");
+                       priv->has_sync ? "yes" : "no",
+                       priv->has_bgra ? "yes" : "no");
   }
 #endif
 
@@ -1812,6 +1817,14 @@ gdk_gl_context_has_sync (GdkGLContext *self)
   return priv->has_sync;
 }
 
+gboolean
+gdk_gl_context_has_bgra (GdkGLContext *self)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
+
+  return priv->has_bgra;
+}
+
 /* This is currently private! */
 /* When using GL/ES, don't flip the 'R' and 'B' bits on Windows/ANGLE for glReadPixels() */
 gboolean
diff --git a/gdk/gdkglcontextprivate.h b/gdk/gdkglcontextprivate.h
index 9ce133c4b7..f026eaf081 100644
--- a/gdk/gdkglcontextprivate.h
+++ b/gdk/gdkglcontextprivate.h
@@ -155,6 +155,8 @@ gboolean                gdk_gl_context_has_vertex_half_float    (GdkGLContext
 
 gboolean                gdk_gl_context_has_sync                 (GdkGLContext    *self) G_GNUC_PURE;
 
+gboolean                gdk_gl_context_has_bgra                 (GdkGLContext    *self) G_GNUC_PURE;
+
 double                  gdk_gl_context_get_scale                (GdkGLContext    *self);
 
 G_END_DECLS