[client] egl: add portable texture upload fallback

client/tests/postprocess_order_test.c

@@ -0,0 +1,73 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "test.h"
+
+#include "../renderers/EGL/postprocess_order.h"
+
+static void checkFilterOrder(EGL_Filter ** filters, EGL_Filter ** expected,
+    size_t count)
+{
+  for (size_t i = 0; i < count; ++i)
+    CHECK(filters[i] == expected[i]);
+}
+
+int main(void)
+{
+  EGL_Filter first    = { .ops = { .id = "first"     } };
+  EGL_Filter second   = { .ops = { .id = "second"    } };
+  EGL_Filter third    = { .ops = { .id = "third"     } };
+  EGL_Filter unknownA = { .ops = { .id = "unknown-a" } };
+  EGL_Filter unknownB = { .ops = { .id = "unknown-b" } };
+
+  EGL_Filter * filters [] =
+  {
+    &unknownA,
+    &second,
+    &unknownB,
+    &first,
+    &third,
+  };
+  EGL_Filter * expected[] =
+  {
+    &first,
+    &second,
+    &third,
+    &unknownA,
+    &unknownB,
+  };
+
+  StringList order = stringlist_new(false);
+  CHECK(order);
+  CHECK(stringlist_push(order, "first")  == 0);
+  CHECK(stringlist_push(order, "second") == 1);
+  CHECK(stringlist_push(order, "third")  == 2);
+
+  const size_t count = sizeof(filters) / sizeof(*filters);
+  egl_postProcessOrderFilters(filters, count, order);
+  checkFilterOrder(filters, expected, count);
+
+  stringlist_clear(order);
+  egl_postProcessOrderFilters(filters, count, order);
+  checkFilterOrder(filters, expected, count);
+
+  stringlist_free(&order);
+  return EXIT_SUCCESS;
+}