VertexLoader: Add more tests, including a few small benchmarks

1 files changed, 175 insertions, 36 deletions

diff --git a/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp b/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp
index c529a628e6..1126cbd73a 100644
--- a/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp
+++ b/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp
@@ -13,7 +13,9 @@ TEST(VertexLoaderUID, UniqueEnough)
 	std::set<VertexLoaderUID> uids;
 
 	TVtxDesc vtx_desc;
+	memset(&vtx_desc, 0, sizeof (vtx_desc));
 	VAT vat;
+	memset(&vat, 0, sizeof (vat));
 	uids.insert(VertexLoaderUID(vtx_desc, vat));
 
 	vtx_desc.Hex = 0xFEDCBA9876543210ull;
@@ -27,21 +29,22 @@ TEST(VertexLoaderUID, UniqueEnough)
 	uids.insert(VertexLoaderUID(vtx_desc, vat));
 }
 
+static u8 input_memory[16 * 1024 * 1024];
+static u8 output_memory[16 * 1024 * 1024];
+
 class VertexLoaderTest : public testing::Test
 {
 protected:
+
 	void SetUp() override
 	{
-		// The vertex loading code is still using global variables to specify
-		// where to load and store data.
-		//
-		// Reserve 64K of memory for both.
-		m_input_memory.clear(); m_input_memory.resize(65536);
-		m_output_memory.clear(); m_output_memory.resize(65536);
-		g_pVideoData = m_input_memory.data();
-		VertexManager::s_pCurBufferPointer = m_output_memory.data();
+		memset(&input_memory[0], 0, sizeof (input_memory));
+		memset(&output_memory[0], 0, sizeof (input_memory));
 
-		m_input_pos = m_output_pos = 0;
+		memset(&m_vtx_desc, 0, sizeof (m_vtx_desc));
+		memset(&m_vtx_attr, 0, sizeof (m_vtx_attr));
+
+		ResetPointers();
 	}
 
 	// Pushes a value to the input stream.
@@ -49,7 +52,7 @@ protected:
 	void Input(T val)
 	{
 		// Converts *to* big endian, not from.
-		*(T*)(&m_input_memory[m_input_pos]) = Common::FromBigEndian(val);
+		*(T*)(&input_memory[m_input_pos]) = Common::FromBigEndian(val);
 		m_input_pos += sizeof (val);
 	}
 
@@ -57,28 +60,38 @@ protected:
 	template <typename T>
 	T Output()
 	{
-		T out = *(T*)&m_output_memory[m_output_pos];
+		T out = *(T*)&output_memory[m_output_pos];
 		m_output_pos += sizeof (out);
 		return out;
 	}
 
+	// Combination of EXPECT_EQ and Output.
+	template <typename T>
+	void ExpectOut(T val)
+	{
+		EXPECT_EQ(val, Output<T>());
+	}
+
+	void ResetPointers()
+	{
+		g_pVideoData = &input_memory[0];
+		VertexManager::s_pCurBufferPointer = &output_memory[0];
+		m_input_pos = m_output_pos = 0;
+	}
+
 	u32 m_input_pos, m_output_pos;
-	std::vector<u8> m_input_memory, m_output_memory;
+
+	TVtxDesc m_vtx_desc;
+	VAT m_vtx_attr;
 };
 
-TEST_F(VertexLoaderTest, PositionDirectXYZ)
+TEST_F(VertexLoaderTest, PositionDirectFloatXYZ)
 {
-	TVtxDesc vtx_desc;
-	VAT vtx_attr;
-
-	memset(&vtx_desc, 0, sizeof (vtx_desc));
-	memset(&vtx_attr, 0, sizeof (vtx_attr));
-
-	vtx_desc.Position = 1;        // Direct.
-	vtx_attr.g0.PosElements = 1;  // XYZ
-	vtx_attr.g0.PosFormat = 4;    // Float
+	m_vtx_desc.Position = 1;        // Direct
+	m_vtx_attr.g0.PosElements = 1;  // XYZ
+	m_vtx_attr.g0.PosFormat = 4;    // Float
 
-	VertexLoader loader(vtx_desc, vtx_attr);
+	VertexLoader loader(m_vtx_desc, m_vtx_attr);
 
 	ASSERT_EQ(3 * sizeof (float), (u32)loader.GetNativeVertexDeclaration().stride);
 	ASSERT_EQ(3 * sizeof (float), (u32)loader.GetVertexSize());
@@ -90,21 +103,147 @@ TEST_F(VertexLoaderTest, PositionDirectXYZ)
 	Input(0.0f); Input(0.0f); Input(1.0f);
 
 	// Convert 4 points. "7" -> primitive are points.
-	loader.RunVertices(vtx_attr, 7, 4);
+	loader.RunVertices(m_vtx_attr, 7, 4);
+
+	ExpectOut(0.0f); ExpectOut(0.0f); ExpectOut(0.0f);
+	ExpectOut(1.0f); ExpectOut(0.0f); ExpectOut(0.0f);
+	ExpectOut(0.0f); ExpectOut(1.0f); ExpectOut(0.0f);
+	ExpectOut(0.0f); ExpectOut(0.0f); ExpectOut(1.0f);
+
+	// Test that scale does nothing for floating point inputs.
+	Input(1.0f); Input(2.0f); Input(4.0f);
+	m_vtx_attr.g0.PosFrac = 1;
+	loader.RunVertices(m_vtx_attr, 7, 1);
+	ExpectOut(1.0f); ExpectOut(2.0f); ExpectOut(4.0f);
+}
+
+TEST_F(VertexLoaderTest, PositionDirectU16XY)
+{
+	m_vtx_desc.Position = 1;        // Direct
+	m_vtx_attr.g0.PosElements = 0;  // XY
+	m_vtx_attr.g0.PosFormat = 2;    // U16
+
+	VertexLoader loader(m_vtx_desc, m_vtx_attr);
+
+	ASSERT_EQ(3 * sizeof (float), (u32)loader.GetNativeVertexDeclaration().stride);
+	ASSERT_EQ(2 * sizeof (u16), (u32)loader.GetVertexSize());
+
+	// Write some vertices.
+	Input<u16>(0); Input<u16>(0);
+	Input<u16>(1); Input<u16>(2);
+	Input<u16>(256); Input<u16>(257);
+	Input<u16>(65535); Input<u16>(65534);
+	Input<u16>(12345); Input<u16>(54321);
+
+	// Convert 5 points. "7" -> primitive are points.
+	loader.RunVertices(m_vtx_attr, 7, 5);
+
+	ExpectOut(0.0f); ExpectOut(0.0f); ExpectOut(0.0f);
+	ExpectOut(1.0f); ExpectOut(2.0f); ExpectOut(0.0f);
+	ExpectOut(256.0f); ExpectOut(257.0f); ExpectOut(0.0f);
+	ExpectOut(65535.0f); ExpectOut(65534.0f); ExpectOut(0.0f);
+	ExpectOut(12345.0f); ExpectOut(54321.0f); ExpectOut(0.0f);
+
+	// Test that scale works on U16 inputs.
+	Input<u16>(42); Input<u16>(24);
+	m_vtx_attr.g0.PosFrac = 1;
+	loader.RunVertices(m_vtx_attr, 7, 1);
+	ExpectOut(21.0f); ExpectOut(12.0f); ExpectOut(0.0f);
+}
+
+TEST_F(VertexLoaderTest, PositionDirectFloatXYZSpeed)
+{
+	m_vtx_desc.Position = 1;        // Direct
+	m_vtx_attr.g0.PosElements = 1;  // XYZ
+	m_vtx_attr.g0.PosFormat = 4;    // Float
 
-	EXPECT_EQ(0.0f, Output<float>());
-	EXPECT_EQ(0.0f, Output<float>());
-	EXPECT_EQ(0.0f, Output<float>());
+	VertexLoader loader(m_vtx_desc, m_vtx_attr);
 
-	EXPECT_EQ(1.0f, Output<float>());
-	EXPECT_EQ(0.0f, Output<float>());
-	EXPECT_EQ(0.0f, Output<float>());
+	ASSERT_EQ(3 * sizeof (float), (u32)loader.GetNativeVertexDeclaration().stride);
+	ASSERT_EQ(3 * sizeof (float), (u32)loader.GetVertexSize());
 
-	EXPECT_EQ(0.0f, Output<float>());
-	EXPECT_EQ(1.0f, Output<float>());
-	EXPECT_EQ(0.0f, Output<float>());
+	for (int i = 0; i < 1000; ++i)
+	{
+		ResetPointers();
+		loader.RunVertices(m_vtx_attr, 7, 100000);
+	}
+}
 
-	EXPECT_EQ(0.0f, Output<float>());
-	EXPECT_EQ(0.0f, Output<float>());
-	EXPECT_EQ(1.0f, Output<float>());
+TEST_F(VertexLoaderTest, PositionDirectU16XYSpeed)
+{
+	m_vtx_desc.Position = 1;        // Direct
+	m_vtx_attr.g0.PosElements = 0;  // XY
+	m_vtx_attr.g0.PosFormat = 2;    // U16
+
+	VertexLoader loader(m_vtx_desc, m_vtx_attr);
+
+	ASSERT_EQ(3 * sizeof (float), (u32)loader.GetNativeVertexDeclaration().stride);
+	ASSERT_EQ(2 * sizeof (u16), (u32)loader.GetVertexSize());
+
+	for (int i = 0; i < 1000; ++i)
+	{
+		ResetPointers();
+		loader.RunVertices(m_vtx_attr, 7, 100000);
+	}
+}
+
+TEST_F(VertexLoaderTest, LargeFloatVertexSpeed)
+{
+	// Enables most attributes in floating point direct mode to test speed.
+	m_vtx_desc.PosMatIdx = 1;
+	m_vtx_desc.Tex0MatIdx = 1;
+	m_vtx_desc.Tex1MatIdx = 1;
+	m_vtx_desc.Tex2MatIdx = 1;
+	m_vtx_desc.Tex3MatIdx = 1;
+	m_vtx_desc.Tex4MatIdx = 1;
+	m_vtx_desc.Tex5MatIdx = 1;
+	m_vtx_desc.Tex6MatIdx = 1;
+	m_vtx_desc.Tex7MatIdx = 1;
+	m_vtx_desc.Position = 1;
+	m_vtx_desc.Normal = 1;
+	m_vtx_desc.Color0 = 1;
+	m_vtx_desc.Color1 = 1;
+	m_vtx_desc.Tex0Coord = 1;
+	m_vtx_desc.Tex1Coord = 1;
+	m_vtx_desc.Tex2Coord = 1;
+	m_vtx_desc.Tex3Coord = 1;
+	m_vtx_desc.Tex4Coord = 1;
+	m_vtx_desc.Tex5Coord = 1;
+	m_vtx_desc.Tex6Coord = 1;
+	m_vtx_desc.Tex7Coord = 1;
+
+	m_vtx_attr.g0.PosElements = 1;        // XYZ
+	m_vtx_attr.g0.PosFormat = 4;          // Float
+	m_vtx_attr.g0.NormalElements = 1;     // NBT
+	m_vtx_attr.g0.NormalFormat = 4;       // Float
+	m_vtx_attr.g0.Color0Elements = 1;     // Has Alpha
+	m_vtx_attr.g0.Color0Comp = 5;         // RGBA8888
+	m_vtx_attr.g0.Color1Elements = 1;     // Has Alpha
+	m_vtx_attr.g0.Color1Comp = 5;         // RGBA8888
+	m_vtx_attr.g0.Tex0CoordElements = 1;  // ST
+	m_vtx_attr.g0.Tex0CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex1CoordElements = 1;  // ST
+	m_vtx_attr.g1.Tex1CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex2CoordElements = 1;  // ST
+	m_vtx_attr.g1.Tex2CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex3CoordElements = 1;  // ST
+	m_vtx_attr.g1.Tex3CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex4CoordElements = 1;  // ST
+	m_vtx_attr.g1.Tex4CoordFormat = 4;    // Float
+	m_vtx_attr.g2.Tex5CoordElements = 1;  // ST
+	m_vtx_attr.g2.Tex5CoordFormat = 4;    // Float
+	m_vtx_attr.g2.Tex6CoordElements = 1;  // ST
+	m_vtx_attr.g2.Tex6CoordFormat = 4;    // Float
+	m_vtx_attr.g2.Tex7CoordElements = 1;  // ST
+	m_vtx_attr.g2.Tex7CoordFormat = 4;    // Float
+
+	VertexLoader loader(m_vtx_desc, m_vtx_attr);
+
+	// This test is only done 100x in a row since it's ~20x slower using the
+	// current vertex loader implementation.
+	for (int i = 0; i < 100; ++i)
+	{
+		ResetPointers();
+		loader.RunVertices(m_vtx_attr, 7, 100000);
+	}
 }