2 #include "flat_input.h"
3 #include "gtest/gtest.h"
10 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height, MovitPixelFormat pixel_format, ColorSpace color_space, GammaCurve gamma_curve)
11 : chain(width, height), width(width), height(height)
13 add_input(data, pixel_format, color_space, gamma_curve);
15 glGenTextures(1, &texnum);
17 glBindTexture(GL_TEXTURE_2D, texnum);
19 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
22 glGenFramebuffers(1, &fbo);
24 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
26 glFramebufferTexture2D(
33 glBindFramebuffer(GL_FRAMEBUFFER, 0);
37 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, ColorSpace color_space, GammaCurve gamma_curve)
40 format.color_space = color_space;
41 format.gamma_curve = gamma_curve;
43 FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
44 input->set_pixel_data(data);
45 chain.add_input(input);
49 void EffectChainTester::run(float *out_data, GLenum format, ColorSpace color_space, GammaCurve gamma_curve)
51 ImageFormat image_format;
52 image_format.color_space = color_space;
53 image_format.gamma_curve = gamma_curve;
54 chain.add_output(image_format);
57 chain.render_to_fbo(fbo, width, height);
59 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
60 glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
62 // Flip upside-down to compensate for different origin.
63 for (unsigned y = 0; y < height / 2; ++y) {
64 unsigned flip_y = height - y - 1;
65 for (unsigned x = 0; x < width; ++x) {
66 std::swap(out_data[y * width + x], out_data[flip_y * width + x]);
71 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height)
73 float largest_difference = -1.0f;
74 float squared_difference = 0.0f;
76 for (unsigned y = 0; y < height; ++y) {
77 for (unsigned x = 0; x < width; ++x) {
78 float diff = ref[y * width + x] - result[y * width + x];
79 largest_difference = std::max(largest_difference, fabsf(diff));
80 squared_difference += diff * diff;
84 const float largest_difference_limit = 1.5 / 255.0;
85 const float rms_limit = 0.2 / 255.0;
87 EXPECT_LT(largest_difference, largest_difference_limit);
89 float rms = sqrt(squared_difference) / (width * height);
90 EXPECT_LT(rms, rms_limit);
92 if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
93 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
95 fprintf(stderr, "Reference:\n");
96 for (unsigned y = 0; y < height; ++y) {
97 for (unsigned x = 0; x < width; ++x) {
98 fprintf(stderr, "%7.4f ", ref[y * width + x]);
100 fprintf(stderr, "\n");
103 fprintf(stderr, "\nResult:\n");
104 for (unsigned y = 0; y < height; ++y) {
105 for (unsigned x = 0; x < width; ++x) {
106 fprintf(stderr, "%7.4f ", result[y * width + x]);
108 fprintf(stderr, "\n");