Use a smaller support texture for the FFT.

[movit] / flat_input_test.cpp

diff --git a/flat_input_test.cpp b/flat_input_test.cpp
index 17ee9ce49f407abefc9206df05e1e69559f73c2f..58d9eb94b199a2c807c7a44397e23caed79eba69 100644 (file)
--- a/flat_input_test.cpp
+++ b/flat_input_test.cpp
@@ -1,8 +1,15 @@
 // Unit tests for FlatInput.
 
-#include "test_util.h"
-#include "gtest/gtest.h"
+#include <GL/glew.h>
+#include <stddef.h>
+
+#include "effect_chain.h"
 #include "flat_input.h"
+#include "gtest/gtest.h"
+#include "test_util.h"
+#include "util.h"
+
+namespace movit {
 
 TEST(FlatInput, SimpleGrayscale) {
        const int size = 4;
@@ -71,7 +78,38 @@ TEST(FlatInput, RGBA) {
        };
        float out_data[4 * size];
 
-       EffectChainTester tester(data, 1, size, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+       EffectChainTester tester(data, 1, size, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
+       tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+       expect_equal(expected_data, out_data, 4, size);
+}
+
+// Note: The sRGB conversion itself is tested in EffectChainTester,
+// since it also wants to test the chain building itself.
+// Here, we merely test that alpha is left alone; the test will usually
+// run using the sRGB OpenGL extension, but might be run with a
+// GammaExpansionEffect if the card/driver happens not to support that.
+TEST(FlatInput, AlphaIsNotModifiedBySRGBConversion) {
+       const int size = 5;
+
+       unsigned char data[4 * size] = {
+               0, 0, 0, 0,
+               0, 0, 0, 63,
+               0, 0, 0, 127,
+               0, 0, 0, 191,
+               0, 0, 0, 255,
+       };
+       float expected_data[4 * size] = {
+               0, 0, 0, 0.0 / 255.0,
+               0, 0, 0, 63.0 / 255.0,
+               0, 0, 0, 127.0 / 255.0,
+               0, 0, 0, 191.0 / 255.0,
+               0, 0, 0, 255.0 / 255.0,
+       };
+       float out_data[4 * size];
+
+        EffectChainTester tester(NULL, 1, size);
+        tester.add_input(data, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_sRGB);
        tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
 
        expect_equal(expected_data, out_data, 4, size);
@@ -121,7 +159,7 @@ TEST(FlatInput, BGRA) {
        };
        float out_data[4 * size];
 
-       EffectChainTester tester(data, 1, size, FORMAT_BGRA, COLORSPACE_sRGB, GAMMA_LINEAR);
+       EffectChainTester tester(data, 1, size, FORMAT_BGRA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
        tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
 
        expect_equal(expected_data, out_data, 4, size);
@@ -192,3 +230,41 @@ TEST(FlatInput, UpdatedData) {
        tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
        expect_equal(data, out_data, width, height);
 }
+
+TEST(FlatInput, PBO) {
+       const int width = 3;
+       const int height = 2;
+
+       float data[width * height] = {
+               0.0, 1.0, 0.5,
+               0.5, 0.5, 0.2,
+       };
+       float expected_data[4 * width * height] = {
+               0.0, 0.0, 0.0, 1.0,  1.0, 1.0, 1.0, 1.0,  0.5, 0.5, 0.5, 1.0,
+               0.5, 0.5, 0.5, 1.0,  0.5, 0.5, 0.5, 1.0,  0.2, 0.2, 0.2, 1.0,
+       };
+       float out_data[4 * width * height];
+
+       GLuint pbo;
+       glGenBuffers(1, &pbo);
+       glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
+       glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, width * height * sizeof(float), data, GL_STREAM_DRAW);
+       glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+
+       EffectChainTester tester(NULL, width, height);
+
+       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((float *)BUFFER_OFFSET(0), pbo);
+       tester.get_chain()->add_input(input);
+
+       tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+       expect_equal(expected_data, out_data, 4 * width, height);
+
+       glDeleteBuffers(1, &pbo);
+}
+
+}  // namespace movit