+// 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"); }
+};
+
+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);
+}
+