expect_equal(expected_data, out_data, 2, 1);
}
+// Requires mipmaps, but is otherwise like IdentityEffect.
+class MipmapNeedingIdentityEffect : public IdentityEffect {
+public:
+ MipmapNeedingIdentityEffect() {}
+ MipmapRequirements needs_mipmaps() const override { return NEEDS_MIPMAPS; }
+ string effect_type_id() const override { return "MipmapNeedingIdentityEffect"; }
+ bool strong_one_to_one_sampling() const override { return true; }
+};
+
+TEST(ComputeShaderTest, StrongOneToOneButStillNotChained) {
+ float data[] = {
+ 0.0f, 0.25f, 0.3f, 0.8f,
+ 0.75f, 1.0f, 1.0f, 0.2f,
+ };
+ float out_data[8];
+
+ ImageFormat format;
+ format.color_space = COLORSPACE_sRGB;
+ format.gamma_curve = GAMMA_LINEAR;
+
+ EffectChainTester tester(nullptr, 4, 2);
+
+ FlatInput *input1 = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 4, 2);
+ input1->set_pixel_data(data);
+ tester.get_chain()->add_input(input1);
+ Effect *compute_effect = tester.get_chain()->add_effect(new IdentityComputeEffect());
+
+ FlatInput *input2 = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 4, 2);
+ input2->set_pixel_data(data);
+ tester.get_chain()->add_input(input2);
+
+ // Not chained with the compute shader because MipmapNeedingIdentityEffect comes in
+ // the same phase, and compute shaders cannot supply mipmaps.
+ tester.get_chain()->add_effect(new StrongOneToOneAddEffect(), compute_effect, input2);
+ tester.get_chain()->add_effect(new MipmapNeedingIdentityEffect());
+
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+ expect_equal(data, out_data, 4, 2);
+}
+
} // namespace movit