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test-snippets: Add a test for using cogl_sampler in tex hook

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This adds a test for doing custom sampling using the cogl_sampler
variable in the texture lookup hook.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts 2012-02-10 16:44:57 +00:00
parent 6ca852fad6
commit 39b9e717f5
1 changed files with 29 additions and 0 deletions
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29
tests/conform/test-snippets.c
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@ -298,6 +298,34 @@ test_texture_lookup_hook (TestState *state)
test_utils_check_pixel (85, 5, 0x00ffffff);
}
static void
test_multiple_samples (TestState *state)
{
CoglPipeline *pipeline;
CoglSnippet *snippet;
/* Check that we can use the passed in sampler in the texture lookup
to sample multiple times */
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_LOOKUP,
NULL,
NULL);
cogl_snippet_set_replace (snippet,
"cogl_texel = "
"texture2D (cogl_sampler, vec2 (0.25, 0.25)) + "
"texture2D (cogl_sampler, vec2 (0.75, 0.25));");
pipeline = create_texture_pipeline ();
cogl_pipeline_add_layer_snippet (pipeline, 0, snippet);
cogl_push_source (pipeline);
cogl_rectangle (0, 0, 10, 10);
cogl_pop_source ();
cogl_object_unref (pipeline);
cogl_object_unref (snippet);
test_utils_check_pixel (5, 5, 0xffff00ff);
}
static void
test_replace_lookup_hook (TestState *state)
{
@ -614,6 +642,7 @@ tests[] =
test_pipeline_caching,
test_replace_string,
test_texture_lookup_hook,
test_multiple_samples,
test_replace_lookup_hook,
test_replace_snippet,
test_replace_fragment_layer,