1 files changed, 80 insertions, 0 deletions
diff --git a/cogl/tests/conform/test-texture-no-allocate.c b/cogl/tests/conform/test-texture-no-allocate.c
new file mode 100644
index 000000000..b0199a988
--- /dev/null
+++ b/cogl/tests/conform/test-texture-no-allocate.c
@@ -0,0 +1,80 @@
+#include <cogl/cogl.h>
+
+#include "test-utils.h"
+
+/* Tests that the various texture types can be freed without being
+ * allocated */
+
+/* Texture size that is probably to big to fit within the texture
+ * limits */
+#define BIG_TEX_WIDTH 16384
+#define BIG_TEX_HEIGHT 128
+
+void
+test_texture_no_allocate (void)
+{
+  uint8_t *tex_data;
+  CoglTexture *texture;
+  CoglTexture2D *texture_2d;
+  GError *error = NULL;
+
+  tex_data = g_malloc (BIG_TEX_WIDTH * BIG_TEX_HEIGHT * 4);
+
+  /* NB: if we make the atlas and sliced texture APIs public then this
+   * could changed to explicitly use that instead of the magic texture
+   * API */
+
+  /* Try to create an atlas texture that is too big so it will
+   * internally be freed without allocating */
+  texture =
+    cogl_atlas_texture_new_from_data (test_ctx,
+                                      BIG_TEX_WIDTH,
+                                      BIG_TEX_HEIGHT,
+                                      /* format */
+                                      COGL_PIXEL_FORMAT_RGBA_8888_PRE,
+                                      /* rowstride */
+                                      BIG_TEX_WIDTH * 4,
+                                      tex_data,
+                                      &error);
+
+  g_free (tex_data);
+
+  /* It's ok if this causes an error, we just don't want it to
+   * crash */
+
+  if (texture == NULL)
+    cogl_error_free (error);
+  else
+    cogl_object_unref (texture);
+
+  /* Try to create a sliced texture without allocating it */
+  texture =
+    cogl_texture_2d_sliced_new_with_size (test_ctx,
+                                          BIG_TEX_WIDTH,
+                                          BIG_TEX_HEIGHT,
+                                          COGL_TEXTURE_MAX_WASTE);
+  cogl_object_unref (texture);
+
+  /* 2D texture */
+  texture_2d = cogl_texture_2d_new_with_size (test_ctx,
+                                              64, 64);
+  cogl_object_unref (texture_2d);
+
+  /* 3D texture */
+  if (cogl_has_feature (test_ctx, COGL_FEATURE_ID_TEXTURE_3D))
+    {
+      CoglTexture3D *texture_3d =
+        cogl_texture_3d_new_with_size (test_ctx,
+                                       64, 64, 64);
+      cogl_object_unref (texture_3d);
+    }
+
+  /* Rectangle texture */
+  if (cogl_has_feature (test_ctx, COGL_FEATURE_ID_TEXTURE_RECTANGLE))
+    {
+      CoglTextureRectangle *texture_rect =
+        cogl_texture_rectangle_new_with_size (test_ctx,
+                                              64, 64);
+      cogl_object_unref (texture_rect);
+    }
+}