X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=compute_shader_test.cpp;fp=compute_shader_test.cpp;h=7179f82c9cff96612bfc943d17e9ff42c9f78220;hb=65c6584f77bff0af0c8e38d1ac90298bcd55e9ac;hp=0000000000000000000000000000000000000000;hpb=706365ccee2ad69c5bc3608e12ca8e9ada7ce954;p=movit

diff --git a/compute_shader_test.cpp b/compute_shader_test.cpp
new file mode 100644
index 0000000..7179f82
--- /dev/null
+++ b/compute_shader_test.cpp
@@ -0,0 +1,68 @@
+#include <string>
+
+#include <epoxy/gl.h>
+#include <assert.h>
+
+#include "effect.h"
+#include "flat_input.h"
+#include "gtest/gtest.h"
+#include "init.h"
+#include "resource_pool.h"
+#include "test_util.h"
+#include "util.h"
+
+using namespace std;
+
+namespace movit {
+
+// An effect that does nothing.
+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.compute"); }
+};
+
+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);
+}
+
+}  // namespace movit