Another NULL initializer, mostly to get Coverity to be quiet.
[movit] / effect_chain_test.cpp
index 4a9712e..7549103 100644 (file)
@@ -51,6 +51,7 @@ public:
        virtual std::string effect_type_id() const { return "IdentityEffect"; }
        std::string output_fragment_shader() { return read_file("identity.frag"); }
        bool needs_texture_bounce() const { return true; }
+       AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
 };
 
 TEST(EffectChainTest, TextureBouncePreservesIdentity) {
@@ -96,24 +97,23 @@ public:
 };
 
 // Like IdentityEffect, but rewrites itself out of the loop,
-// splicing in a InvertEffect instead. Also stores the new node,
-// so we later can check that there are gamma conversion effects
-// on both sides.
-class RewritingToInvertEffect : public Effect {
+// splicing in a different effect instead. Also stores the new node,
+// so we later can check whatever properties we'd like about the graph.
+template<class T>
+class RewritingEffect : public Effect {
 public:
-       RewritingToInvertEffect() {}
-       virtual std::string effect_type_id() const { return "RewritingToInvertEffect"; }
+       RewritingEffect() : effect(new T()), replaced_node(NULL) {}
+       virtual std::string effect_type_id() const { return "RewritingEffect[" + effect->effect_type_id() + "]"; }
        std::string output_fragment_shader() { EXPECT_TRUE(false); return read_file("identity.frag"); }
        virtual void rewrite_graph(EffectChain *graph, Node *self) {
-               Node *invert_node = graph->add_node(new InvertEffect());
-               graph->replace_receiver(self, invert_node);
-               graph->replace_sender(self, invert_node);
-
+               replaced_node = graph->add_node(effect);
+               graph->replace_receiver(self, replaced_node);
+               graph->replace_sender(self, replaced_node);
                self->disabled = true;
-               this->invert_node = invert_node;
        }
 
-       Node *invert_node;      
+       T *effect;
+       Node *replaced_node;
 };
 
 TEST(EffectChainTest, RewritingWorksAndGammaConversionsAreInserted) {
@@ -127,11 +127,11 @@ TEST(EffectChainTest, RewritingWorksAndGammaConversionsAreInserted) {
        };
        float out_data[6];
        EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
-       RewritingToInvertEffect *effect = new RewritingToInvertEffect();
+       RewritingEffect<InvertEffect> *effect = new RewritingEffect<InvertEffect>();
        tester.get_chain()->add_effect(effect);
        tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
 
-       Node *node = effect->invert_node;
+       Node *node = effect->replaced_node;
        ASSERT_EQ(1, node->incoming_links.size());
        ASSERT_EQ(1, node->outgoing_links.size());
        EXPECT_EQ("GammaExpansionEffect", node->incoming_links[0]->effect->effect_type_id());
@@ -152,11 +152,11 @@ TEST(EffectChainTest, RewritingWorksAndTexturesAreAskedForsRGB) {
        float out_data[2];
        EffectChainTester tester(NULL, 2, 2);
        tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
-       RewritingToInvertEffect *effect = new RewritingToInvertEffect();
+       RewritingEffect<InvertEffect> *effect = new RewritingEffect<InvertEffect>();
        tester.get_chain()->add_effect(effect);
        tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
 
-       Node *node = effect->invert_node;
+       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());
@@ -176,11 +176,11 @@ TEST(EffectChainTest, RewritingWorksAndColorspaceConversionsAreInserted) {
        };
        float out_data[6];
        EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_REC_601_525, GAMMA_LINEAR);
-       RewritingToInvertEffect *effect = new RewritingToInvertEffect();
+       RewritingEffect<InvertEffect> *effect = new RewritingEffect<InvertEffect>();
        tester.get_chain()->add_effect(effect);
        tester.run(out_data, GL_RED, COLORSPACE_REC_601_525, GAMMA_LINEAR);
 
-       Node *node = effect->invert_node;
+       Node *node = effect->replaced_node;
        ASSERT_EQ(1, node->incoming_links.size());
        ASSERT_EQ(1, node->outgoing_links.size());
        EXPECT_EQ("ColorspaceConversionEffect", node->incoming_links[0]->effect->effect_type_id());
@@ -244,25 +244,6 @@ TEST(EffectChainTester, HandlesInputChangingColorspace) {
        expect_equal(data, out_data, 4, 1);
 }
 
-// Like RewritingToInvertEffect, but splicing in a MirrorEffect instead,
-// which does not need linear light or sRGB primaries.
-class RewritingToMirrorEffect : public Effect {
-public:
-       RewritingToMirrorEffect() {}
-       virtual std::string effect_type_id() const { return "RewritingToMirrorEffect"; }
-       std::string output_fragment_shader() { EXPECT_TRUE(false); return read_file("identity.frag"); }
-       virtual void rewrite_graph(EffectChain *graph, Node *self) {
-               Node *mirror_node = graph->add_node(new MirrorEffect());
-               graph->replace_receiver(self, mirror_node);
-               graph->replace_sender(self, mirror_node);
-
-               self->disabled = true;
-               this->mirror_node = mirror_node;
-       }
-
-       Node *mirror_node;
-};
-
 TEST(EffectChainTest, NoGammaConversionsWhenLinearLightNotNeeded) {
        float data[] = {
                0.0f, 0.25f, 0.3f,
@@ -274,11 +255,11 @@ TEST(EffectChainTest, NoGammaConversionsWhenLinearLightNotNeeded) {
        };
        float out_data[6];
        EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
-       RewritingToMirrorEffect *effect = new RewritingToMirrorEffect();
+       RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
        tester.get_chain()->add_effect(effect);
        tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
 
-       Node *node = effect->mirror_node;
+       Node *node = effect->replaced_node;
        ASSERT_EQ(1, node->incoming_links.size());
        EXPECT_EQ(0, node->outgoing_links.size());
        EXPECT_EQ("FlatInput", node->incoming_links[0]->effect->effect_type_id());
@@ -297,11 +278,11 @@ TEST(EffectChainTest, NoColorspaceConversionsWhensRGBPrimariesNotNeeded) {
        };
        float out_data[6];
        EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_REC_601_525, GAMMA_LINEAR);
-       RewritingToMirrorEffect *effect = new RewritingToMirrorEffect();
+       RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
        tester.get_chain()->add_effect(effect);
        tester.run(out_data, GL_RED, COLORSPACE_REC_601_525, GAMMA_LINEAR);
 
-       Node *node = effect->mirror_node;
+       Node *node = effect->replaced_node;
        ASSERT_EQ(1, node->incoming_links.size());
        EXPECT_EQ(0, node->outgoing_links.size());
        EXPECT_EQ("FlatInput", node->incoming_links[0]->effect->effect_type_id());
@@ -385,11 +366,11 @@ TEST(EffectChainTest, NoAlphaConversionsWhenPremultipliedAlphaNotNeeded) {
        };
        float out_data[4 * size];
        EffectChainTester tester(data, size, 1, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
-       RewritingToMirrorEffect *effect = new RewritingToMirrorEffect();
+       RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
        tester.get_chain()->add_effect(effect);
        tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
 
-       Node *node = effect->mirror_node;
+       Node *node = effect->replaced_node;
        ASSERT_EQ(1, node->incoming_links.size());
        EXPECT_EQ(0, node->outgoing_links.size());
        EXPECT_EQ("FlatInput", node->incoming_links[0]->effect->effect_type_id());
@@ -415,7 +396,7 @@ private:
        int needs_mipmaps;
 };
 
-// Like RewritingToInvertEffect, but splicing in a BlueInput instead,
+// Like RewritingEffect<InvertEffect>, but splicing in a BlueInput instead,
 // which outputs blank alpha.
 class RewritingToBlueInput : public Input {
 public:
@@ -660,3 +641,52 @@ TEST(EffectChainTest, DiamondGraph) {
 
        expect_equal(expected_data, out_data, 2, 2);
 }
+
+// Constructs the graph
+//
+//             FlatInput                     |
+//            /         \                    |
+//  MultiplyEffect  MultiplyEffect           |
+//         \             |                   |
+//          \    BouncingIdentityEffect      |  
+//            \         /                    |
+//             AddEffect                     |
+//
+// and verifies that it gives the correct output.
+TEST(EffectChainTest, DiamondGraphWithOneInputUsedInTwoPhases) {
+       float data[] = {
+               1.0f, 1.0f,
+               1.0f, 0.0f,
+       };
+       float expected_data[] = {
+               2.5f, 2.5f,
+               2.5f, 0.0f,
+       };
+       float out_data[2 * 2];
+
+       MultiplyEffect *mul_half = new MultiplyEffect();
+       ASSERT_TRUE(mul_half->set_float("factor", 0.5f));
+       
+       MultiplyEffect *mul_two = new MultiplyEffect();
+       ASSERT_TRUE(mul_two->set_float("factor", 2.0f));
+       
+       BouncingIdentityEffect *bounce = new BouncingIdentityEffect();
+
+       EffectChainTester tester(NULL, 2, 2);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+       input->set_pixel_data(data);
+
+       tester.get_chain()->add_input(input);
+       tester.get_chain()->add_effect(mul_half, input);
+       tester.get_chain()->add_effect(mul_two, input);
+       tester.get_chain()->add_effect(bounce, mul_two);
+       tester.get_chain()->add_effect(new AddEffect(), mul_half, bounce);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       expect_equal(expected_data, out_data, 2, 2);
+}