Optimize away duplicate conversion nodes.

[movit] / effect_chain_test.cpp

diff --git a/effect_chain_test.cpp b/effect_chain_test.cpp
index 75491030b05b66f27fef22a17ca8e5f7ccf66dcd..614bffc3dd5ecfe08143062af0ebda767ffb9970 100644 (file)
--- a/effect_chain_test.cpp
+++ b/effect_chain_test.cpp
@@ -690,3 +690,69 @@ TEST(EffectChainTest, DiamondGraphWithOneInputUsedInTwoPhases) {
 
        expect_equal(expected_data, out_data, 2, 2);
 }
+
+TEST(EffectChainTest, EffectUsedTwiceOnlyGetsOneGammaConversion) {
+       float data[] = {
+               0.735f, 0.0f,
+               0.735f, 0.0f,
+       };
+       float expected_data[] = {
+               0.0f, 0.5f,  // 0.5 and not 1.0, since AddEffect doesn't clamp alpha properly.
+               0.0f, 0.5f,
+       };
+       float out_data[2 * 2];
+       
+       EffectChainTester tester(NULL, 2, 2);
+       tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
+
+       // MirrorEffect does not get linear light, so the conversions will be
+       // inserted after it, not before.
+       RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
+       tester.get_chain()->add_effect(effect);
+
+       Effect *identity1 = tester.get_chain()->add_effect(new IdentityEffect(), effect);
+       Effect *identity2 = tester.get_chain()->add_effect(new IdentityEffect(), effect);
+       tester.get_chain()->add_effect(new AddEffect(), identity1, identity2);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       expect_equal(expected_data, out_data, 2, 2);
+
+       Node *node = effect->replaced_node;
+       ASSERT_EQ(1, node->incoming_links.size());
+       ASSERT_EQ(1, node->outgoing_links.size());
+       EXPECT_EQ("FlatInput", node->incoming_links[0]->effect->effect_type_id());
+       EXPECT_EQ("GammaExpansionEffect", node->outgoing_links[0]->effect->effect_type_id());
+}
+
+TEST(EffectChainTest, EffectUsedTwiceOnlyGetsOneColorspaceConversion) {
+       float data[] = {
+               0.5f, 0.0f,
+               0.5f, 0.0f,
+       };
+       float expected_data[] = {
+               0.0f, 0.5f,  // 0.5 and not 1.0, since AddEffect doesn't clamp alpha properly.
+               0.0f, 0.5f,
+       };
+       float out_data[2 * 2];
+       
+       EffectChainTester tester(NULL, 2, 2);
+       tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_REC_601_625, GAMMA_LINEAR);
+
+       // MirrorEffect does not get linear light, so the conversions will be
+       // inserted after it, not before.
+       RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
+       tester.get_chain()->add_effect(effect);
+
+       Effect *identity1 = tester.get_chain()->add_effect(new IdentityEffect(), effect);
+       Effect *identity2 = tester.get_chain()->add_effect(new IdentityEffect(), effect);
+       tester.get_chain()->add_effect(new AddEffect(), identity1, identity2);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       expect_equal(expected_data, out_data, 2, 2);
+
+       Node *node = effect->replaced_node;
+       ASSERT_EQ(1, node->incoming_links.size());
+       ASSERT_EQ(1, node->outgoing_links.size());
+       EXPECT_EQ("FlatInput", node->incoming_links[0]->effect->effect_type_id());
+       EXPECT_EQ("ColorspaceConversionEffect", node->outgoing_links[0]->effect->effect_type_id());
+}