//
// Note that this also contains the tests for some of the simpler effects.
-#include <GL/glew.h>
+#include <locale>
+#include <sstream>
+#include <string>
+#include <epoxy/gl.h>
+#include <assert.h>
+
+#include "effect.h"
#include "effect_chain.h"
#include "flat_input.h"
#include "gtest/gtest.h"
+#include "init.h"
+#include "input.h"
#include "mirror_effect.h"
+#include "multiply_effect.h"
#include "resize_effect.h"
+#include "resource_pool.h"
#include "test_util.h"
+#include "util.h"
+
+using namespace std;
+
+namespace movit {
TEST(EffectChainTest, EmptyChain) {
float data[] = {
class IdentityEffect : public Effect {
public:
IdentityEffect() {}
- virtual std::string effect_type_id() const { return "IdentityEffect"; }
- std::string output_fragment_shader() { return read_file("identity.frag"); }
+ virtual string effect_type_id() const { return "IdentityEffect"; }
+ string output_fragment_shader() { return read_file("identity.frag"); }
};
TEST(EffectChainTest, Identity) {
class BouncingIdentityEffect : public Effect {
public:
BouncingIdentityEffect() {}
- virtual std::string effect_type_id() const { return "IdentityEffect"; }
- std::string output_fragment_shader() { return read_file("identity.frag"); }
+ virtual string effect_type_id() const { return "IdentityEffect"; }
+ 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; }
};
expect_equal(expected_data, out_data, 3, 2);
}
+TEST(EffectChainTest, TopLeftOrigin) {
+ float data[] = {
+ 0.0f, 0.25f, 0.3f,
+ 0.75f, 1.0f, 1.0f,
+ };
+ // Note that EffectChainTester assumes bottom-left origin, so by setting
+ // top-left, we will get flipped data back.
+ float expected_data[6] = {
+ 0.75f, 1.0f, 1.0f,
+ 0.0f, 0.25f, 0.3f,
+ };
+ float out_data[6];
+ EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+ tester.get_chain()->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(expected_data, out_data, 3, 2);
+}
+
// A dummy effect that inverts its input.
class InvertEffect : public Effect {
public:
InvertEffect() {}
- virtual std::string effect_type_id() const { return "InvertEffect"; }
- std::string output_fragment_shader() { return read_file("invert_effect.frag"); }
+ virtual string effect_type_id() const { return "InvertEffect"; }
+ string output_fragment_shader() { return read_file("invert_effect.frag"); }
// A real invert would actually care about its alpha,
// but in this unit test, it only complicates things.
template<class T>
class RewritingEffect : public Effect {
public:
- 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"); }
+ RewritingEffect() : effect(new T()), replaced_node(nullptr) {}
+ virtual string effect_type_id() const { return "RewritingEffect[" + effect->effect_type_id() + "]"; }
+ string output_fragment_shader() { EXPECT_TRUE(false); return read_file("identity.frag"); }
virtual void rewrite_graph(EffectChain *graph, Node *self) {
replaced_node = graph->add_node(effect);
graph->replace_receiver(self, replaced_node);
TEST(EffectChainTest, RewritingWorksAndTexturesAreAskedForsRGB) {
unsigned char data[] = {
- 0, 64,
- 128, 255,
+ 0, 0, 0, 255,
+ 64, 64, 64, 255,
+ 128, 128, 128, 255,
+ 255, 255, 255, 255,
};
- float expected_data[4] = {
- 1.0f, 0.9771f,
- 0.8983f, 0.0f,
+ float expected_data[] = {
+ 1.0000f, 1.0000f, 1.0000f, 1.0000f,
+ 0.9771f, 0.9771f, 0.9771f, 1.0000f,
+ 0.8983f, 0.8983f, 0.8983f, 1.0000f,
+ 0.0000f, 0.0000f, 0.0000f, 1.0000f
};
- float out_data[4];
- EffectChainTester tester(NULL, 2, 2);
- tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
+ float out_data[4 * 4];
+ EffectChainTester tester(nullptr, 1, 4);
+ tester.add_input(data, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_sRGB);
RewritingEffect<InvertEffect> *effect = new RewritingEffect<InvertEffect>();
tester.get_chain()->add_effect(effect);
- tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
Node *node = effect->replaced_node;
ASSERT_EQ(1, node->incoming_links.size());
EXPECT_EQ("FlatInput", node->incoming_links[0]->effect->effect_type_id());
EXPECT_EQ("GammaCompressionEffect", node->outgoing_links[0]->effect->effect_type_id());
- expect_equal(expected_data, out_data, 2, 2);
+ expect_equal(expected_data, out_data, 4, 4);
}
TEST(EffectChainTest, RewritingWorksAndColorspaceConversionsAreInserted) {
: FlatInput(format, pixel_format, type, width, height),
overridden_color_space(format.color_space),
overridden_gamma_curve(format.gamma_curve) {}
- virtual std::string effect_type_id() const { return "UnknownColorspaceInput"; }
+ virtual string effect_type_id() const { return "UnknownColorspaceInput"; }
void set_color_space(Colorspace colorspace) {
overridden_color_space = colorspace;
GammaCurve overridden_gamma_curve;
};
-TEST(EffectChainTester, HandlesInputChangingColorspace) {
+TEST(EffectChainTest, HandlesInputChangingColorspace) {
const int size = 4;
float data[size] = {
};
float out_data[size];
- EffectChainTester tester(NULL, 4, 1, FORMAT_GRAYSCALE);
+ EffectChainTester tester(nullptr, 4, 1, FORMAT_GRAYSCALE);
// First say that we have sRGB, linear input.
ImageFormat format;
expected_data[i] = i / 255.0;
};
float out_data[256];
- EffectChainTester tester(NULL, 256, 1);
+ EffectChainTester tester(nullptr, 256, 1);
tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
tester.get_chain()->add_effect(new IdentityEffect());
tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
class BlueInput : public Input {
public:
BlueInput() { register_int("needs_mipmaps", &needs_mipmaps); }
- virtual std::string effect_type_id() const { return "IdentityEffect"; }
- std::string output_fragment_shader() { return read_file("blue.frag"); }
+ virtual string effect_type_id() const { return "IdentityEffect"; }
+ string output_fragment_shader() { return read_file("blue.frag"); }
virtual AlphaHandling alpha_handling() const { return OUTPUT_BLANK_ALPHA; }
virtual void finalize() {}
virtual bool can_output_linear_gamma() const { return true; }
// which outputs blank alpha.
class RewritingToBlueInput : public Input {
public:
- RewritingToBlueInput() : blue_node(NULL) { register_int("needs_mipmaps", &needs_mipmaps); }
- virtual std::string effect_type_id() const { return "RewritingToBlueInput"; }
- std::string output_fragment_shader() { EXPECT_TRUE(false); return read_file("identity.frag"); }
+ RewritingToBlueInput() : blue_node(nullptr) { register_int("needs_mipmaps", &needs_mipmaps); }
+ virtual string effect_type_id() const { return "RewritingToBlueInput"; }
+ string output_fragment_shader() { EXPECT_TRUE(false); return read_file("identity.frag"); }
virtual void rewrite_graph(EffectChain *graph, Node *self) {
Node *blue_node = graph->add_node(new BlueInput());
graph->replace_receiver(self, blue_node);
0.0f, 0.0f, 1.0f, 1.0f,
};
float out_data[4 * size];
- EffectChainTester tester(NULL, size, 1);
+ EffectChainTester tester(nullptr, size, 1);
RewritingToBlueInput *input = new RewritingToBlueInput();
tester.get_chain()->add_input(input);
- tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
Node *node = input->blue_node;
EXPECT_EQ(0, node->incoming_links.size());
expect_equal(data, out_data, 4, size);
}
+// An effect that does nothing, and specifies that it preserves blank alpha.
+class BlankAlphaPreservingEffect : public Effect {
+public:
+ BlankAlphaPreservingEffect() {}
+ virtual string effect_type_id() const { return "BlankAlphaPreservingEffect"; }
+ string output_fragment_shader() { return read_file("identity.frag"); }
+ virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
+};
+
+TEST(EffectChainTest, NoAlphaConversionsWithBlankAlphaPreservingEffect) {
+ const int size = 3;
+ float data[4 * size] = {
+ 0.0f, 0.0f, 1.0f, 1.0f,
+ 0.0f, 0.0f, 1.0f, 1.0f,
+ 0.0f, 0.0f, 1.0f, 1.0f,
+ };
+ float out_data[4 * size];
+ EffectChainTester tester(nullptr, size, 1);
+ tester.get_chain()->add_input(new BlueInput());
+ tester.get_chain()->add_effect(new BlankAlphaPreservingEffect());
+ RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
+ tester.get_chain()->add_effect(effect);
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+
+ Node *node = effect->replaced_node;
+ EXPECT_EQ(1, node->incoming_links.size());
+ EXPECT_EQ(0, node->outgoing_links.size());
+
+ expect_equal(data, out_data, 4, size);
+}
+
+// This is the counter-test to NoAlphaConversionsWithBlankAlphaPreservingEffect;
+// just to be sure that with a normal INPUT_AND_OUTPUT_PREMULTIPLIED_ALPHA effect,
+// an alpha conversion _should_ be inserted at the very end. (There is some overlap
+// with other tests.)
+TEST(EffectChainTest, AlphaConversionsWithNonBlankAlphaPreservingEffect) {
+ const int size = 3;
+ float data[4 * size] = {
+ 0.0f, 0.0f, 1.0f, 1.0f,
+ 0.0f, 0.0f, 1.0f, 1.0f,
+ 0.0f, 0.0f, 1.0f, 1.0f,
+ };
+ float out_data[4 * size];
+ EffectChainTester tester(nullptr, size, 1);
+ tester.get_chain()->add_input(new BlueInput());
+ tester.get_chain()->add_effect(new IdentityEffect()); // Not BlankAlphaPreservingEffect.
+ RewritingEffect<MirrorEffect> *effect = new RewritingEffect<MirrorEffect>();
+ tester.get_chain()->add_effect(effect);
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+
+ Node *node = effect->replaced_node;
+ EXPECT_EQ(1, node->incoming_links.size());
+ EXPECT_EQ(1, node->outgoing_links.size());
+ EXPECT_EQ("AlphaDivisionEffect", node->outgoing_links[0]->effect->effect_type_id());
+
+ expect_equal(data, out_data, 4, size);
+}
+
// Effectively scales down its input linearly by 4x (and repeating it),
// which is not attainable without mipmaps.
class MipmapNeedingEffect : public Effect {
public:
MipmapNeedingEffect() {}
virtual bool needs_mipmaps() const { return true; }
- virtual std::string effect_type_id() const { return "MipmapNeedingEffect"; }
- std::string output_fragment_shader() { return read_file("mipmap_needing_effect.frag"); }
- void set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
+
+ // To be allowed to mess with the sampler state.
+ virtual bool needs_texture_bounce() const { return true; }
+
+ virtual string effect_type_id() const { return "MipmapNeedingEffect"; }
+ string output_fragment_shader() { return read_file("mipmap_needing_effect.frag"); }
+ virtual void inform_added(EffectChain *chain) { this->chain = chain; }
+
+ void set_gl_state(GLuint glsl_program_num, const string& prefix, unsigned *sampler_num)
{
- glActiveTexture(GL_TEXTURE0);
+ Node *self = chain->find_node_for_effect(this);
+ glActiveTexture(chain->get_input_sampler(self, 0));
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
check_error();
}
+
+private:
+ EffectChain *chain;
};
TEST(EffectChainTest, MipmapGenerationWorks) {
expect_equal(expected_data, out_data, 4, 16);
}
+class NonMipmapCapableInput : public FlatInput {
+public:
+ NonMipmapCapableInput(ImageFormat format, MovitPixelFormat pixel_format, GLenum type, unsigned width, unsigned height)
+ : FlatInput(format, pixel_format, type, width, height) {}
+
+ virtual bool can_supply_mipmaps() const { return false; }
+ bool set_int(const std::string& key, int value) {
+ if (key == "needs_mipmaps") {
+ assert(value == 0);
+ }
+ return FlatInput::set_int(key, value);
+ }
+};
+
+// The same test as MipmapGenerationWorks, but with an input that refuses
+// to supply mipmaps.
+TEST(EffectChainTest, MipmapsWithNonMipmapCapableInput) {
+ float data[] = { // In 4x4 blocks.
+ 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, 1.0f,
+
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 0.5f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f,
+
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 1.0f, 0.0f,
+ 0.0f, 1.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 0.0f,
+ };
+ float expected_data[] = { // Repeated four times each way.
+ 0.125f, 0.125f, 0.125f, 0.125f,
+ 0.09375f, 0.09375f, 0.09375f, 0.09375f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 0.25f, 0.25f, 0.25f, 0.25f,
+
+ 0.125f, 0.125f, 0.125f, 0.125f,
+ 0.09375f, 0.09375f, 0.09375f, 0.09375f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 0.25f, 0.25f, 0.25f, 0.25f,
+
+ 0.125f, 0.125f, 0.125f, 0.125f,
+ 0.09375f, 0.09375f, 0.09375f, 0.09375f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 0.25f, 0.25f, 0.25f, 0.25f,
+
+ 0.125f, 0.125f, 0.125f, 0.125f,
+ 0.09375f, 0.09375f, 0.09375f, 0.09375f,
+ 1.0f, 1.0f, 1.0f, 1.0f,
+ 0.25f, 0.25f, 0.25f, 0.25f,
+ };
+ float out_data[4 * 16];
+ EffectChainTester tester(nullptr, 4, 16, FORMAT_GRAYSCALE);
+
+ ImageFormat format;
+ format.color_space = COLORSPACE_sRGB;
+ format.gamma_curve = GAMMA_LINEAR;
+
+ NonMipmapCapableInput *input = new NonMipmapCapableInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 4, 16);
+ input->set_pixel_data(data);
+ tester.get_chain()->add_input(input);
+ tester.get_chain()->add_effect(new MipmapNeedingEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(expected_data, out_data, 4, 16);
+}
+
TEST(EffectChainTest, ResizeDownByFourThenUpByFour) {
float data[] = { // In 4x4 blocks.
1.0f, 0.0f, 0.0f, 0.0f,
expect_equal(expected_data, out_data, 4, 16);
}
-// An effect that multiplies with a constant. Used below.
-class MultiplyEffect : public Effect {
-public:
- MultiplyEffect() { register_float("factor", &factor); }
- virtual std::string effect_type_id() const { return "MultiplyEffect"; }
- std::string output_fragment_shader() { return read_file("multiply.frag"); }
- virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
-
-private:
- float factor;
-};
-
// An effect that adds its two inputs together. Used below.
class AddEffect : public Effect {
public:
AddEffect() {}
- virtual std::string effect_type_id() const { return "AddEffect"; }
- std::string output_fragment_shader() { return read_file("add.frag"); }
+ virtual string effect_type_id() const { return "AddEffect"; }
+ string output_fragment_shader() { return read_file("add.frag"); }
virtual unsigned num_inputs() const { return 2; }
virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
};
};
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_float("factor", 0.5f));
+ ASSERT_TRUE(mul_half->set_vec4("factor", half));
MultiplyEffect *mul_two = new MultiplyEffect();
- ASSERT_TRUE(mul_two->set_float("factor", 2.0f));
+ ASSERT_TRUE(mul_two->set_vec4("factor", two));
- EffectChainTester tester(NULL, 2, 2);
+ EffectChainTester tester(nullptr, 2, 2);
ImageFormat format;
format.color_space = COLORSPACE_sRGB;
};
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_float("factor", 0.5f));
+ ASSERT_TRUE(mul_half->set_vec4("factor", half));
MultiplyEffect *mul_two = new MultiplyEffect();
- ASSERT_TRUE(mul_two->set_float("factor", 2.0f));
+ ASSERT_TRUE(mul_two->set_vec4("factor", two));
BouncingIdentityEffect *bounce = new BouncingIdentityEffect();
- EffectChainTester tester(NULL, 2, 2);
+ EffectChainTester tester(nullptr, 2, 2);
ImageFormat format;
format.color_space = COLORSPACE_sRGB;
};
float out_data[2 * 2];
- EffectChainTester tester(NULL, 2, 2);
+ EffectChainTester tester(nullptr, 2, 2);
tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
// MirrorEffect does not get linear light, so the conversions will be
};
float out_data[2 * 2];
- EffectChainTester tester(NULL, 2, 2);
+ EffectChainTester tester(nullptr, 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
input_width = width;
input_height = height;
}
- virtual std::string effect_type_id() const { return "SizeStoringEffect"; }
+ virtual string effect_type_id() const { return "SizeStoringEffect"; }
int input_width, input_height;
};
0.0f, 0.0f,
0.0f, 0.0f,
};
- float out_data[2 * 2];
+ float out_data[4 * 3];
- EffectChainTester tester(NULL, 4, 3); // Note non-square aspect.
+ EffectChainTester tester(nullptr, 4, 3); // Note non-square aspect.
ImageFormat format;
format.color_space = COLORSPACE_sRGB;
// (keep the height, round the width 9.333 to 9).
float out_data[9 * 7];
- EffectChainTester tester(NULL, 4, 3);
+ EffectChainTester tester(nullptr, 4, 3);
ImageFormat format;
format.color_space = COLORSPACE_sRGB;
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(nullptr, 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:
height(height),
virtual_width(virtual_width),
virtual_height(virtual_height) {}
- virtual std::string effect_type_id() const { return "VirtualResizeEffect"; }
- std::string output_fragment_shader() { return read_file("identity.frag"); }
+ 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; }
// 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, nullptr);
+ 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 == nullptr) {
+ // 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);
+}
+
+// An effect that does nothing, but as a compute shader.
+class IdentityComputeEffect : public Effect {
+public:
+ IdentityComputeEffect() {}
+ virtual string effect_type_id() const { return "IdentityComputeEffect"; }
+ virtual bool is_compute_shader() const { return true; }
+ string output_fragment_shader() { return read_file("identity.comp"); }
+};
+
+class WithAndWithoutComputeShaderTest : public testing::TestWithParam<string> {
+};
+INSTANTIATE_TEST_CASE_P(WithAndWithoutComputeShaderTest,
+ WithAndWithoutComputeShaderTest,
+ testing::Values("fragment", "compute"));
+
+TEST(EffectChainTest, sRGBIntermediate) {
+ float data[] = {
+ 0.0f, 0.5f, 0.0f, 1.0f,
+ };
+ float out_data[4];
+ EffectChainTester tester(data, 1, 1, FORMAT_RGBA_PREMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
+ tester.get_chain()->set_intermediate_format(GL_SRGB8);
+ tester.get_chain()->add_effect(new IdentityEffect());
+ tester.get_chain()->add_effect(new BouncingIdentityEffect());
+ tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ EXPECT_GE(fabs(out_data[1] - data[1]), 1e-3)
+ << "Expected sRGB not to be able to represent 0.5 exactly (got " << out_data[1] << ")";
+ EXPECT_LT(fabs(out_data[1] - data[1]), 0.1f)
+ << "Expected sRGB to be able to represent 0.5 approximately (got " << out_data[1] << ")";
+
+ // This state should have been preserved.
+ EXPECT_FALSE(glIsEnabled(GL_FRAMEBUFFER_SRGB));
+}
+
+// An effect that is like IdentityEffect, but also does not require linear light.
+class PassThroughEffect : public IdentityEffect {
+public:
+ PassThroughEffect() {}
+ virtual string effect_type_id() const { return "PassThroughEffect"; }
+ virtual bool needs_linear_light() const { return false; }
+ AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
+};
+
+// Same, just also bouncing.
+class BouncingPassThroughEffect : public BouncingIdentityEffect {
+public:
+ BouncingPassThroughEffect() {}
+ virtual string effect_type_id() const { return "BouncingPassThroughEffect"; }
+ virtual bool needs_linear_light() const { return false; }
+ bool needs_texture_bounce() const { return true; }
+ AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
+};
+
+TEST(EffectChainTest, Linear10bitIntermediateAccuracy) {
+ // Note that we do the comparison in sRGB space, which is what we
+ // typically would want; however, we do the sRGB conversion ourself
+ // to avoid compounding errors from shader conversions into the
+ // analysis.
+ const int size = 4096; // 12-bit.
+ float linear_data[size], data[size], out_data[size];
+
+ for (int i = 0; i < size; ++i) {
+ linear_data[i] = i / double(size - 1);
+ data[i] = srgb_to_linear(linear_data[i]);
+ }
+
+ EffectChainTester tester(data, size, 1, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, GL_RGBA32F);
+ tester.get_chain()->set_intermediate_format(GL_RGB10_A2);
+ tester.get_chain()->add_effect(new IdentityEffect());
+ tester.get_chain()->add_effect(new BouncingIdentityEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ for (int i = 0; i < size; ++i) {
+ out_data[i] = linear_to_srgb(out_data[i]);
+ }
+
+ // This maximum error is pretty bad; about 6.5 levels of a 10-bit sRGB
+ // framebuffer. (Slightly more on NVIDIA cards.)
+ expect_equal(linear_data, out_data, size, 1, 7.5e-3, 2e-5);
+}
+
+TEST_P(WithAndWithoutComputeShaderTest, SquareRoot10bitIntermediateAccuracy) {
+ // Note that we do the comparison in sRGB space, which is what we
+ // typically would want; however, we do the sRGB conversion ourself
+ // to avoid compounding errors from shader conversions into the
+ // analysis.
+ const int size = 4096; // 12-bit.
+ float linear_data[size], data[size], out_data[size];
+
+ for (int i = 0; i < size; ++i) {
+ linear_data[i] = i / double(size - 1);
+ data[i] = srgb_to_linear(linear_data[i]);
+ }
+
+ EffectChainTester tester(data, size, 1, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, GL_RGBA32F);
+ tester.get_chain()->set_intermediate_format(GL_RGB10_A2, SQUARE_ROOT_FRAMEBUFFER_TRANSFORMATION);
+ if (GetParam() == "compute") {
+ tester.get_chain()->add_effect(new IdentityComputeEffect());
+ } else {
+ tester.get_chain()->add_effect(new IdentityEffect());
+ }
+ tester.get_chain()->add_effect(new BouncingIdentityEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ for (int i = 0; i < size; ++i) {
+ out_data[i] = linear_to_srgb(out_data[i]);
+ }
+
+ // This maximum error is much better; about 0.7 levels of a 10-bit sRGB
+ // framebuffer (ideal would be 0.5). That is an order of magnitude better
+ // than in the linear test above. The RMS error is much better, too.
+ expect_equal(linear_data, out_data, size, 1, 7.5e-4, 5e-6);
+}
+
+TEST(EffectChainTest, SquareRootIntermediateIsTurnedOffForNonLinearData) {
+ const int size = 256; // 8-bit.
+ float data[size], out_data[size];
+
+ for (int i = 0; i < size; ++i) {
+ data[i] = i / double(size - 1);
+ }
+
+ EffectChainTester tester(data, size, 1, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_REC_601, GL_RGBA32F);
+ tester.get_chain()->set_intermediate_format(GL_RGB8, SQUARE_ROOT_FRAMEBUFFER_TRANSFORMATION);
+ tester.get_chain()->add_effect(new PassThroughEffect());
+ tester.get_chain()->add_effect(new BouncingPassThroughEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_REC_601);
+
+ // The data should be passed through nearly exactly, since there is no effect
+ // on the path that requires linear light. (Actually, it _is_ exact modulo
+ // fp32 errors, but the error bounds is strictly _less than_, not zero.)
+ expect_equal(data, out_data, size, 1, 1e-6, 1e-6);
+}
+
+// An effect that stores which program number was last run under.
+class RecordingIdentityEffect : public Effect {
+public:
+ RecordingIdentityEffect() {}
+ virtual string effect_type_id() const { return "RecordingIdentityEffect"; }
+ string output_fragment_shader() { return read_file("identity.frag"); }
+
+ GLuint last_glsl_program_num;
+ void set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
+ {
+ last_glsl_program_num = glsl_program_num;
+ }
+};
+
+TEST(EffectChainTest, ProgramsAreClonedForMultipleThreads) {
+ float data[] = {
+ 0.0f, 0.25f, 0.3f,
+ 0.75f, 1.0f, 1.0f,
+ };
+ float out_data[6];
+ EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+ RecordingIdentityEffect *effect = new RecordingIdentityEffect();
+ tester.get_chain()->add_effect(effect);
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(data, out_data, 3, 2);
+
+ ASSERT_NE(0, effect->last_glsl_program_num);
+
+ // Now pretend some other effect is using this program number;
+ // ResourcePool will then need to clone it.
+ ResourcePool *resource_pool = tester.get_chain()->get_resource_pool();
+ GLuint master_program_num = resource_pool->use_glsl_program(effect->last_glsl_program_num);
+ EXPECT_EQ(effect->last_glsl_program_num, master_program_num);
+
+ // Re-run should still give the correct data, but it should have run
+ // with a different program.
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+ expect_equal(data, out_data, 3, 2);
+ EXPECT_NE(effect->last_glsl_program_num, master_program_num);
+
+ // Release the program, and check one final time.
+ resource_pool->unuse_glsl_program(master_program_num);
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+ expect_equal(data, out_data, 3, 2);
+}
+
+TEST(ComputeShaderTest, Identity) {
+ float data[] = {
+ 0.0f, 0.25f, 0.3f,
+ 0.75f, 1.0f, 1.0f,
+ };
+ float out_data[6];
+ EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+ if (!movit_compute_shaders_supported) {
+ fprintf(stderr, "Skipping test; no support for compile shaders.\n");
+ return;
+ }
+ tester.get_chain()->add_effect(new IdentityComputeEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(data, out_data, 3, 2);
+}
+
+// Like IdentityComputeEffect, but due to the alpha handling, this will be
+// the very last effect in the chain, which means we can't output it directly
+// to the screen.
+class IdentityAlphaComputeEffect : public IdentityComputeEffect {
+ AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
+};
+
+TEST(ComputeShaderTest, LastEffectInChain) {
+ float data[] = {
+ 0.0f, 0.25f, 0.3f,
+ 0.75f, 1.0f, 1.0f,
+ };
+ float out_data[6];
+ EffectChainTester tester(data, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+ if (!movit_compute_shaders_supported) {
+ fprintf(stderr, "Skipping test; no support for compile shaders.\n");
+ return;
+ }
+ tester.get_chain()->add_effect(new IdentityAlphaComputeEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(data, out_data, 3, 2);
+}
+
+TEST(ComputeShaderTest, Render8BitTo8Bit) {
+ uint8_t data[] = {
+ 14, 200, 80,
+ 90, 100, 110,
+ };
+ uint8_t out_data[6];
+ EffectChainTester tester(nullptr, 3, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, GL_RGBA8);
+ if (!movit_compute_shaders_supported) {
+ fprintf(stderr, "Skipping test; no support for compile shaders.\n");
+ return;
+ }
+ tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, 3, 2);
+ tester.get_chain()->add_effect(new IdentityAlphaComputeEffect());
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(data, out_data, 3, 2);
+}
+
+} // namespace movit
projects / movit / blobdiff