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test-snippets: Add a test to verify the order of the snippets

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This verifies that the post strings are executed in the order they
were added to the pipeline and the post strings are executed in the
reverse order.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts 2011-12-06 12:14:07 +00:00 committed by Robert Bragg
parent 72097ac01d
commit 6320aab9b4
1 changed files with 32 additions and 0 deletions
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32
tests/conform/test-snippets.c
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@ -388,6 +388,37 @@ paint (TestState *state)
/* Restore the projection matrix */
cogl_set_projection_matrix (&matrix);
/* Verify that the snippets are executed in the right order. We'll
replace the r component of the color in the pre sections of the
snippets and the g component in the post. The pre sections should
be executed in the reverse order they were added and the post
sections in the same order as they were added. Therefore the r
component should be taken from the the second snippet and the g
component from the first */
pipeline = cogl_pipeline_new ();
cogl_pipeline_set_color4ub (pipeline, 0, 0, 0, 255);
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
NULL,
"cogl_color_out.g = 0.5;\n");
cogl_snippet_set_pre (snippet, "cogl_color_out.r = 0.5;\n");
cogl_snippet_set_replace (snippet, "cogl_color_out.ba = vec2 (0.0, 1.0);");
cogl_pipeline_add_snippet (pipeline, snippet);
cogl_object_unref (snippet);
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
NULL,
"cogl_color_out.g = 1.0;\n");
cogl_snippet_set_pre (snippet, "cogl_color_out.r = 1.0;\n");
cogl_pipeline_add_snippet (pipeline, snippet);
cogl_object_unref (snippet);
cogl_push_source (pipeline);
cogl_rectangle (160, 0, 170, 10);
cogl_pop_source ();
cogl_object_unref (pipeline);
/* Sanity check modifying the snippet */
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT, "foo", "bar");
g_assert_cmpstr (cogl_snippet_get_declarations (snippet), ==, "foo");
@ -443,6 +474,7 @@ validate_result (void)
test_utils_check_pixel (135, 5, 0xffff00ff);
test_utils_check_pixel (145, 5, 0x00ff00ff);
test_utils_check_pixel (155, 5, 0xff00ffff);
test_utils_check_pixel (165, 5, 0x80ff00ff);
}
void