Support multi-texture FBOs in ResourcePool.

[movit] / effect_chain_test.cpp

diff --git a/effect_chain_test.cpp b/effect_chain_test.cpp
index 516dd54ea00e84eaeaac7e2afd2e58b1f545343e..28ccc70b0bde6c136705d7bbba685a93e390763d 100644 (file)
--- a/effect_chain_test.cpp
+++ b/effect_chain_test.cpp
@@ -1053,6 +1053,93 @@ TEST(EffectChainTest, VirtualSizeIsSentOnToInputs) {
        expect_equal(data, out_data, size, size);
 }
 
+// An effect that is like VirtualResizeEffect, but always has virtual and real
+// sizes the same (and promises this).
+class NonVirtualResizeEffect : public VirtualResizeEffect {
+public:
+       NonVirtualResizeEffect(int width, int height)
+               : VirtualResizeEffect(width, height, width, height) {}
+       virtual string effect_type_id() const { return "NonVirtualResizeEffect"; }
+       virtual bool sets_virtual_output_size() const { return false; }
+};
+
+// An effect that promises one-to-one sampling (unlike IdentityEffect).
+class OneToOneEffect : public Effect {
+public:
+       OneToOneEffect() {}
+       virtual string effect_type_id() const { return "OneToOneEffect"; }
+       string output_fragment_shader() { return read_file("identity.frag"); }
+       virtual bool one_to_one_sampling() const { return true; }
+};
+
+TEST(EffectChainTest, NoBounceWithOneToOneSampling) {
+       const int size = 2;
+       float data[size * size] = {
+               1.0f, 0.0f,
+               0.0f, 1.0f,
+       };
+       float out_data[size * size];
+
+       EffectChainTester tester(data, size, size, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       RewritingEffect<OneToOneEffect> *effect1 = new RewritingEffect<OneToOneEffect>();
+       RewritingEffect<OneToOneEffect> *effect2 = new RewritingEffect<OneToOneEffect>();
+
+       tester.get_chain()->add_effect(new NonVirtualResizeEffect(size, size));
+       tester.get_chain()->add_effect(effect1);
+       tester.get_chain()->add_effect(effect2);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       expect_equal(data, out_data, size, size);
+
+       // The first OneToOneEffect should be in the same phase as its input.
+       ASSERT_EQ(1, effect1->replaced_node->incoming_links.size());
+       EXPECT_EQ(effect1->replaced_node->incoming_links[0]->containing_phase,
+                 effect1->replaced_node->containing_phase);
+
+       // The second OneToOneEffect, too.
+       EXPECT_EQ(effect1->replaced_node->containing_phase,
+                 effect2->replaced_node->containing_phase);
+}
+
+TEST(EffectChainTest, BounceWhenOneToOneIsBroken) {
+       const int size = 2;
+       float data[size * size] = {
+               1.0f, 0.0f,
+               0.0f, 1.0f,
+       };
+       float out_data[size * size];
+
+       EffectChainTester tester(data, size, size, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       RewritingEffect<OneToOneEffect> *effect1 = new RewritingEffect<OneToOneEffect>();
+       RewritingEffect<OneToOneEffect> *effect2 = new RewritingEffect<OneToOneEffect>();
+       RewritingEffect<IdentityEffect> *effect3 = new RewritingEffect<IdentityEffect>();
+       RewritingEffect<OneToOneEffect> *effect4 = new RewritingEffect<OneToOneEffect>();
+
+       tester.get_chain()->add_effect(new NonVirtualResizeEffect(size, size));
+       tester.get_chain()->add_effect(effect1);
+       tester.get_chain()->add_effect(effect2);
+       tester.get_chain()->add_effect(effect3);
+       tester.get_chain()->add_effect(effect4);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       expect_equal(data, out_data, size, size);
+
+       // The NonVirtualResizeEffect should be in a different phase from
+       // the IdentityEffect (since the latter is not one-to-one),
+       // ie., the chain should be broken somewhere between them, but exactly
+       // where doesn't matter.
+       ASSERT_EQ(1, effect1->replaced_node->incoming_links.size());
+       EXPECT_NE(effect1->replaced_node->incoming_links[0]->containing_phase,
+                 effect3->replaced_node->containing_phase);
+
+       // The last OneToOneEffect should also be in the same phase as the
+       // IdentityEffect (the phase was already broken).
+       EXPECT_EQ(effect3->replaced_node->containing_phase,
+                 effect4->replaced_node->containing_phase);
+}
+
 // Does not use EffectChainTest, so that it can construct an EffectChain without
 // a shared ResourcePool (which is also properly destroyed afterwards).
 // Also turns on debugging to test that code path.