+
+// 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];
+
+ const float half[] = { 0.5f, 0.5f, 0.5f, 0.5f };
+ const float two[] = { 2.0f, 2.0f, 2.0f, 0.5f };
+
+ MultiplyEffect *mul_half = new MultiplyEffect();
+ ASSERT_TRUE(mul_half->set_vec4("factor", half));
+
+ MultiplyEffect *mul_two = new MultiplyEffect();
+ ASSERT_TRUE(mul_two->set_vec4("factor", two));
+
+ 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);
+}
+
+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());
+}
+
+// An effect that does nothing, but requests texture bounce and stores
+// its input size.
+class SizeStoringEffect : public BouncingIdentityEffect {
+public:
+ SizeStoringEffect() : input_width(-1), input_height(-1) {}
+ virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height) {
+ assert(input_num == 0);
+ input_width = width;
+ input_height = height;
+ }
+ virtual string effect_type_id() const { return "SizeStoringEffect"; }
+
+ int input_width, input_height;
+};
+
+TEST(EffectChainTest, SameInputsGiveSameOutputs) {
+ float data[2 * 2] = {
+ 0.0f, 0.0f,
+ 0.0f, 0.0f,
+ };
+ float out_data[4 * 3];
+
+ EffectChainTester tester(NULL, 4, 3); // Note non-square aspect.
+
+ ImageFormat format;
+ format.color_space = COLORSPACE_sRGB;
+ format.gamma_curve = GAMMA_LINEAR;
+
+ FlatInput *input1 = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+ input1->set_pixel_data(data);
+
+ FlatInput *input2 = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+ input2->set_pixel_data(data);
+
+ SizeStoringEffect *input_store = new SizeStoringEffect();
+
+ tester.get_chain()->add_input(input1);
+ tester.get_chain()->add_input(input2);
+ tester.get_chain()->add_effect(new AddEffect(), input1, input2);
+ tester.get_chain()->add_effect(input_store);
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ EXPECT_EQ(2, input_store->input_width);
+ EXPECT_EQ(2, input_store->input_height);
+}
+
+TEST(EffectChainTest, AspectRatioConversion) {
+ float data1[4 * 3] = {
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ };
+ float data2[7 * 7] = {
+ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
+ };
+
+ // The right conversion here is that the 7x7 image decides the size,
+ // since it is the biggest, so everything is scaled up to 9x7
+ // (keep the height, round the width 9.333 to 9).
+ float out_data[9 * 7];
+
+ EffectChainTester tester(NULL, 4, 3);
+
+ ImageFormat format;
+ format.color_space = COLORSPACE_sRGB;
+ format.gamma_curve = GAMMA_LINEAR;
+
+ FlatInput *input1 = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 4, 3);
+ input1->set_pixel_data(data1);
+
+ FlatInput *input2 = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 7, 7);
+ input2->set_pixel_data(data2);
+
+ SizeStoringEffect *input_store = new SizeStoringEffect();
+
+ tester.get_chain()->add_input(input1);
+ tester.get_chain()->add_input(input2);
+ tester.get_chain()->add_effect(new AddEffect(), input1, input2);
+ tester.get_chain()->add_effect(input_store);
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ EXPECT_EQ(9, input_store->input_width);
+ EXPECT_EQ(7, input_store->input_height);
+}
+
+// Tests that putting a BlueInput (constant color) into its own pass,
+// which creates a phase that doesn't need texture coordinates,
+// doesn't mess up a second phase that actually does.
+TEST(EffectChainTest, FirstPhaseWithNoTextureCoordinates) {
+ const int size = 2;
+ float data[] = {
+ 1.0f,
+ 0.0f,
+ };
+ float expected_data[] = {
+ 1.0f, 1.0f, 2.0f, 2.0f,
+ 0.0f, 0.0f, 1.0f, 2.0f,
+ };
+ float out_data[size * 4];
+ // First say that we have sRGB, linear input.
+ ImageFormat format;
+ format.color_space = COLORSPACE_sRGB;
+ format.gamma_curve = GAMMA_LINEAR;
+ FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 1, size);
+
+ input->set_pixel_data(data);
+ EffectChainTester tester(NULL, 1, size);
+ tester.get_chain()->add_input(new BlueInput());
+ Effect *phase1_end = tester.get_chain()->add_effect(new BouncingIdentityEffect());
+ tester.get_chain()->add_input(input);
+ tester.get_chain()->add_effect(new AddEffect(), phase1_end, input);
+
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+
+ expect_equal(expected_data, out_data, 4, size);
+}
+
+// An effect that does nothing except changing its output sizes.
+class VirtualResizeEffect : public Effect {
+public:
+ VirtualResizeEffect(int width, int height, int virtual_width, int virtual_height)
+ : width(width),
+ height(height),
+ virtual_width(virtual_width),
+ virtual_height(virtual_height) {}
+ virtual string effect_type_id() const { return "VirtualResizeEffect"; }
+ string output_fragment_shader() { return read_file("identity.frag"); }
+
+ virtual bool changes_output_size() const { return true; }
+
+ virtual void get_output_size(unsigned *width, unsigned *height,
+ unsigned *virtual_width, unsigned *virtual_height) const {
+ *width = this->width;
+ *height = this->height;
+ *virtual_width = this->virtual_width;
+ *virtual_height = this->virtual_height;
+ }
+
+private:
+ int width, height, virtual_width, virtual_height;
+};
+
+TEST(EffectChainTest, VirtualSizeIsSentOnToInputs) {
+ const int size = 2, bigger_size = 3;
+ 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);
+
+ SizeStoringEffect *size_store = new SizeStoringEffect();
+
+ tester.get_chain()->add_effect(new VirtualResizeEffect(size, size, bigger_size, bigger_size));
+ tester.get_chain()->add_effect(size_store);
+ tester.get_chain()->add_effect(new VirtualResizeEffect(size, size, size, size));
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ EXPECT_EQ(bigger_size, size_store->input_width);
+ EXPECT_EQ(bigger_size, size_store->input_height);
+
+ // If the resize is implemented as non-virtual, we'll fail here,
+ // since bilinear scaling from 2x2 → 3x3 → 2x2 is not very exact.
+ 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.
+TEST(EffectChainTest, IdentityWithOwnPool) {
+ const int width = 3, height = 2;
+ float data[] = {
+ 0.0f, 0.25f, 0.3f,
+ 0.75f, 1.0f, 1.0f,
+ };
+ const float expected_data[] = {
+ 0.75f, 1.0f, 1.0f,
+ 0.0f, 0.25f, 0.3f,
+ };
+ float out_data[6], temp[6 * 4];
+
+ EffectChain chain(width, height);
+ movit_debug_level = MOVIT_DEBUG_ON;
+
+ ImageFormat format;
+ format.color_space = COLORSPACE_sRGB;
+ format.gamma_curve = GAMMA_LINEAR;
+
+ FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, width, height);
+ input->set_pixel_data(data);
+ chain.add_input(input);
+ chain.add_output(format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+
+ GLuint texnum, fbo;
+ glGenTextures(1, &texnum);
+ check_error();
+ glBindTexture(GL_TEXTURE_2D, texnum);
+ check_error();
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
+ check_error();
+
+ glGenFramebuffers(1, &fbo);
+ check_error();
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+ check_error();
+ glFramebufferTexture2D(
+ GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0,
+ GL_TEXTURE_2D,
+ texnum,
+ 0);
+ check_error();
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+ check_error();
+
+ chain.finalize();
+
+ chain.render_to_fbo(fbo, width, height);
+
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+ check_error();
+ glReadPixels(0, 0, width, height, GL_RGBA, GL_FLOAT, temp);
+ check_error();
+ for (unsigned i = 0; i < 6; ++i) {
+ out_data[i] = temp[i * 4];
+ }
+
+ expect_equal(expected_data, out_data, width, height);
+
+ // Reset the debug status again.
+ movit_debug_level = MOVIT_DEBUG_OFF;
+}
+
+// A dummy effect whose only purpose is to test sprintf decimal behavior.
+class PrintfingBlueEffect : public Effect {
+public:
+ PrintfingBlueEffect() {}
+ virtual string effect_type_id() const { return "PrintfingBlueEffect"; }
+ string output_fragment_shader() {
+ stringstream ss;
+ ss.imbue(locale("C"));
+ ss.precision(8);
+ ss << "vec4 FUNCNAME(vec2 tc) { return vec4("
+ << 0.0f << ", " << 0.0f << ", "
+ << 0.5f << ", " << 1.0f << "); }\n";
+ return ss.str();
+ }
+};
+
+TEST(EffectChainTest, StringStreamLocalesWork) {
+ // An example of a locale with comma instead of period as decimal separator.
+ // Obviously, if you run on a machine without this locale available,
+ // the test will always succeed. Note that the OpenGL driver might call
+ // setlocale() behind-the-scenes, and that might corrupt the returned
+ // pointer, so we need to take our own copy of it here.
+ char *saved_locale = setlocale(LC_ALL, "nb_NO.UTF_8");
+ if (saved_locale == NULL) {
+ // The locale wasn't available.
+ return;
+ }
+ saved_locale = strdup(saved_locale);
+ float data[] = {
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ };
+ float expected_data[] = {
+ 0.0f, 0.0f, 0.5f, 1.0f,
+ };
+ float out_data[4];
+ EffectChainTester tester(data, 1, 1, FORMAT_RGBA_PREMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
+ tester.get_chain()->add_effect(new PrintfingBlueEffect());
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(expected_data, out_data, 4, 1);
+
+ setlocale(LC_ALL, saved_locale);
+ free(saved_locale);
+}
+
+
+} // namespace movit