4 files changed, 19 insertions, 5 deletions
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index 42bcb720f41..950c447de9d 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -431,7 +431,7 @@ eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_list,
 
    _EGL_CHECK_DISPLAY(disp, EGL_NO_CONTEXT, drv);
 
-   if (!config)
+   if (!config && !disp->Extensions.MESA_configless_context)
       RETURN_EGL_ERROR(disp, EGL_BAD_CONFIG, EGL_NO_CONTEXT);
 
    if (!share && share_list != EGL_NO_CONTEXT)
diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index 79a92c7c4a6..70277ab9db6 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -523,10 +523,22 @@ _eglCheckMakeCurrent(_EGLContext *ctx, _EGLSurface *draw, _EGLSurface *read)
          return _eglError(EGL_BAD_ACCESS, "eglMakeCurrent");
    }
 
-   /* simply require the configs to be equal */
-   if ((draw && draw->Config != ctx->Config) ||
-       (read && read->Config != ctx->Config))
-      return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
+   /* If the context has a config then it must match that of the two
+    * surfaces */
+   if (ctx->Config) {
+      if ((draw && draw->Config != ctx->Config) ||
+          (read && read->Config != ctx->Config))
+         return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
+   } else {
+      /* Otherwise we must be using the EGL_MESA_configless_context
+       * extension */
+      assert(dpy->Extensions.MESA_configless_context);
+
+      /* The extension doesn't permit binding draw and read buffers with
+       * differing contexts */
+      if (draw && read && draw->Config != read->Config)
+         return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
+   }
 
    switch (ctx->ClientAPI) {
    /* OpenGL and OpenGL ES are conflicting */
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 66aaff52ac1..0952bc960cf 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -89,6 +89,7 @@ struct _egl_extensions
    EGLBoolean MESA_copy_context;
    EGLBoolean MESA_drm_display;
    EGLBoolean MESA_drm_image;
+   EGLBoolean MESA_configless_context;
 
    EGLBoolean WL_bind_wayland_display;
    EGLBoolean WL_create_wayland_buffer_from_image;
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index 341a723be5d..65669d8830f 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -90,6 +90,7 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
    _EGL_CHECK_EXTENSION(MESA_copy_context);
    _EGL_CHECK_EXTENSION(MESA_drm_display);
    _EGL_CHECK_EXTENSION(MESA_drm_image);
+   _EGL_CHECK_EXTENSION(MESA_configless_context);
 
    _EGL_CHECK_EXTENSION(WL_bind_wayland_display);
    _EGL_CHECK_EXTENSION(WL_create_wayland_buffer_from_image);