Add unit tests to EffectChain testing that the sRGB conversion on the GPU works.

[movit] / effect_chain_test.cpp

diff --git a/effect_chain_test.cpp b/effect_chain_test.cpp
index 778259f7da5ca7961510a9739d9915e491e21698..d8ade1370e06d58669d2c47d1e2ff2c5b0d6f4ae 100644 (file)
--- a/effect_chain_test.cpp
+++ b/effect_chain_test.cpp
@@ -135,6 +135,31 @@ TEST(EffectChainTest, RewritingWorksAndGammaConversionsAreInserted) {
        expect_equal(expected_data, out_data, 3, 2);
 }
 
+TEST(EffectChainTest, RewritingWorksAndTexturesAreAskedForsRGB) {
+       unsigned char data[] = {
+               0, 64,
+               128, 255,
+       };
+       float expected_data[4] = {
+               1.0f, 0.9771f,
+               0.8983f, 0.0f,
+       };
+       float out_data[2];
+       EffectChainTester tester(NULL, 2, 2);
+       tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_sRGB);
+       RewritingToInvertEffect *effect = new RewritingToInvertEffect();
+       tester.get_chain()->add_effect(effect);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
+
+       Node *node = effect->invert_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("GammaCompressionEffect", node->outgoing_links[0]->effect->effect_type_id());
+
+       expect_equal(expected_data, out_data, 2, 2);
+}
+
 TEST(EffectChainTest, RewritingWorksAndColorspaceConversionsAreInserted) {
        float data[] = {
                0.0f, 0.25f, 0.3f,
@@ -239,6 +264,23 @@ TEST(EffectChainTest, IdentityThroughsRGBConversions) {
        expect_equal(data, out_data, 256, 1);
 }
 
+// Same, but uses the forward sRGB table from the GPU.
+TEST(EffectChainTest, IdentityThroughGPUsRGBConversions) {
+       unsigned char data[256];
+       float expected_data[256];
+       for (unsigned i = 0; i < 256; ++i) {
+               data[i] = i;
+               expected_data[i] = i / 255.0;
+       };
+       float out_data[256];
+       EffectChainTester tester(NULL, 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);
+
+       expect_equal(expected_data, out_data, 256, 1);
+}
+
 // Same, for the Rec. 601/709 gamma curve.
 TEST(EffectChainTest, IdentityThroughRec709) {
        float data[256];