UnitTests: rewrite vertex loader tests

The position attribute now has complete coverage.

1 files changed, 201 insertions, 168 deletions

diff --git a/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp b/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp
index 966b037312..d3a5bc7b82 100644
--- a/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp
+++ b/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp
@@ -1,13 +1,18 @@
+#include <limits>
+#include <memory>
+#include <tuple>
+#include <type_traits>
 #include <unordered_set>
 
+#include <gtest/gtest.h>  // NOLINT
+
 #include "Common/Common.h"
+#include "Common/MathUtil.h"
+#include "VideoCommon/CPMemory.h"
 #include "VideoCommon/DataReader.h"
+#include "VideoCommon/OpcodeDecoding.h"
 #include "VideoCommon/VertexLoaderBase.h"
 
-// Needs to be included later because it defines a TEST macro that conflicts
-// with a TEST method definition in x64Emitter.h.
-#include <gtest/gtest.h>  // NOLINT
-
 TEST(VertexLoaderUID, UniqueEnough)
 {
 	std::unordered_set<VertexLoaderUID> uids;
@@ -38,181 +43,209 @@ protected:
 
 	void SetUp() override
 	{
-		memset(&input_memory[0], 0, sizeof(input_memory));
-		memset(&output_memory[0], 0, sizeof(input_memory));
+		memset(input_memory, 0, sizeof(input_memory));
+		memset(output_memory, 0xFF, sizeof(input_memory));
 
 		memset(&m_vtx_desc, 0, sizeof(m_vtx_desc));
 		memset(&m_vtx_attr, 0, sizeof(m_vtx_attr));
 
+		m_loader = nullptr;
+
 		ResetPointers();
 	}
 
-	// Pushes a value to the input stream.
+	void CreateAndCheckSizes(size_t input_size, size_t output_size = 3 * sizeof(float))
+	{
+		m_loader.reset(VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr));
+		ASSERT_EQ((int)input_size, m_loader->m_VertexSize);
+		ASSERT_EQ((int)output_size, m_loader->m_native_vtx_decl.stride);
+	}
+
 	template <typename T>
 	void Input(T val)
 	{
-		// Converts *to* big endian, not from.
-		*(T*)(&input_memory[m_input_pos]) = Common::FromBigEndian(val);
-		m_input_pos += sizeof(val);
+		// Write swapped.
+		m_src.Write<T, true>(val);
 	}
 
-	// Reads a value from the output stream.
-	template <typename T>
-	T Output()
+	void ExpectOut(float val)
 	{
-		T out = *(T*)&output_memory[m_output_pos];
-		m_output_pos += sizeof(out);
-		return out;
+		// Read unswapped.
+		MathUtil::IntFloat expected(val), actual(m_dst.Read<float, false>());
+		if (!actual.f || actual.f != actual.f)
+			EXPECT_EQ(expected.i, actual.i);
+		else
+			EXPECT_EQ(expected.f, actual.f);
 	}
 
-	// Combination of EXPECT_EQ and Output.
-	template <typename T>
-	void ExpectOut(T val)
+	void RunVertices(int count, int expected_count = -1)
 	{
-		EXPECT_EQ(val, Output<T>());
+		if (expected_count == -1)
+			expected_count = count;
+		ResetPointers();
+		int actual_count = m_loader->RunVertices(m_src, m_dst, count, GX_DRAW_POINTS);
+		EXPECT_EQ(actual_count, expected_count);
 	}
 
 	void ResetPointers()
 	{
-		m_input_pos = m_output_pos = 0;
-		src = DataReader(input_memory, input_memory + sizeof(input_memory));
-		dst = DataReader(output_memory, output_memory + sizeof(output_memory));
+		m_src = DataReader(input_memory, input_memory + sizeof(input_memory));
+		m_dst = DataReader(output_memory, output_memory + sizeof(output_memory));
 	}
 
-	u32 m_input_pos, m_output_pos;
-	DataReader src;
-	DataReader dst;
+	DataReader m_src;
+	DataReader m_dst;
 
 	TVtxDesc m_vtx_desc;
 	VAT m_vtx_attr;
+	std::unique_ptr<VertexLoaderBase> m_loader;
 };
 
-TEST_F(VertexLoaderTest, PositionDirectFloatXYZ)
+class VertexLoaderParamTest : public VertexLoaderTest, public ::testing::WithParamInterface<std::tuple<int, int, int, int>> {};
+extern int gtest_AllCombinationsVertexLoaderParamTest_dummy_;
+INSTANTIATE_TEST_CASE_P(
+	AllCombinations, VertexLoaderParamTest,
+	::testing::Combine(
+		::testing::Values(DIRECT, INDEX8, INDEX16),
+		::testing::Values(FORMAT_UBYTE, FORMAT_BYTE, FORMAT_USHORT, FORMAT_SHORT, FORMAT_FLOAT),
+		::testing::Values(0, 1), // elements
+		::testing::Values(0, 1, 31) // frac
+	)
+);
+
+TEST_P(VertexLoaderParamTest, PositionAll)
 {
-	m_vtx_desc.Position = 1;        // Direct
-	m_vtx_attr.g0.PosElements = 1;  // XYZ
-	m_vtx_attr.g0.PosFormat = 4;    // Float
-
-	VertexLoaderBase* loader = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
-
-	ASSERT_EQ(3 * sizeof(float), (u32)loader->m_native_vtx_decl.stride);
-	ASSERT_EQ(3 * sizeof(float), (u32)loader->m_VertexSize);
-
-	// Write some vertices.
-	Input(0.0f); Input(0.0f); Input(0.0f);
-	Input(1.0f); Input(0.0f); Input(0.0f);
-	Input(0.0f); Input(1.0f); Input(0.0f);
-	Input(0.0f); Input(0.0f); Input(1.0f);
-
-	// Convert 4 points. "7" -> primitive are points.
-	int count = loader->RunVertices(src, dst, 4, 7);
-	src.Skip(4 * loader->m_VertexSize);
-	dst.Skip(count * loader->m_native_vtx_decl.stride);
-	delete loader;
-
-	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 = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
-	count = loader->RunVertices(src, dst, 1, 7);
-	src.Skip(1 * loader->m_VertexSize);
-	dst.Skip(count * loader->m_native_vtx_decl.stride);
-	ExpectOut(1.0f); ExpectOut(2.0f); ExpectOut(4.0f);
-	delete loader;
+	int addr, format, elements, frac;
+	std::tie(addr, format, elements, frac) = GetParam();
+	this->m_vtx_desc.Position = addr;
+	this->m_vtx_attr.g0.PosFormat = format;
+	this->m_vtx_attr.g0.PosElements = elements;
+	this->m_vtx_attr.g0.PosFrac = frac;
+	this->m_vtx_attr.g0.ByteDequant = true;
+	elements += 2;
+
+	std::vector<float> values = {
+		std::numeric_limits<float>::lowest(),
+		std::numeric_limits<float>::denorm_min(),
+		std::numeric_limits<float>::min(),
+		std::numeric_limits<float>::max(),
+		std::numeric_limits<float>::quiet_NaN(),
+		std::numeric_limits<float>::infinity(),
+		-0x8000, -0x80, -1, -0, 0, 1, 123, 0x7F, 0xFF, 0x7FFF, 0xFFFF, 12345678,
+	};
+	ASSERT_EQ(0u, values.size() % 2);
+	ASSERT_EQ(0u, values.size() % 3);
+
+	int count = (int)values.size() / elements;
+	u32 elem_size = 1 << (format / 2);
+	size_t input_size = elements * elem_size;
+	if (addr & MASK_INDEXED)
+	{
+		input_size = addr - 1;
+		for (int i = 0; i < count; i++)
+			if (addr == INDEX8)
+				Input<u8>(i);
+			else
+				Input<u16>(i);
+		cached_arraybases[ARRAY_POSITION] = m_src.GetPointer();
+		g_main_cp_state.array_strides[ARRAY_POSITION] = elements * elem_size;
+	}
+	CreateAndCheckSizes(input_size);
+	for (float value : values)
+	{
+		switch (format)
+		{
+		case FORMAT_UBYTE:  Input((u8)value);  break;
+		case FORMAT_BYTE:   Input((s8)value);  break;
+		case FORMAT_USHORT: Input((u16)value); break;
+		case FORMAT_SHORT:  Input((s16)value); break;
+		case FORMAT_FLOAT:  Input(value);      break;
+		}
+	}
+
+	RunVertices(count);
+
+	float scale = 1.f / (1u << (format == FORMAT_FLOAT ? 0 : frac));
+	for (auto iter = values.begin(); iter != values.end();)
+	{
+		float f, g;
+		switch (format)
+		{
+		case FORMAT_UBYTE:  f = (u8)*iter++;  g = (u8)*iter++;  break;
+		case FORMAT_BYTE:   f = (s8)*iter++;  g = (s8)*iter++;  break;
+		case FORMAT_USHORT: f = (u16)*iter++; g = (u16)*iter++; break;
+		case FORMAT_SHORT:  f = (s16)*iter++; g = (s16)*iter++; break;
+		case FORMAT_FLOAT:  f = *iter++;      g = *iter++;      break;
+		}
+		ExpectOut(f * scale);
+		ExpectOut(g * scale);
+		if (elements == 2)
+			m_dst.Skip(sizeof(float));
+	}
 }
 
-TEST_F(VertexLoaderTest, PositionDirectU16XY)
+TEST_F(VertexLoaderTest, PositionIndex16FloatXY)
 {
-	m_vtx_desc.Position = 1;        // Direct
-	m_vtx_attr.g0.PosElements = 0;  // XY
-	m_vtx_attr.g0.PosFormat = 2;    // U16
-
-	VertexLoaderBase* loader = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
-
-	ASSERT_EQ(3 * sizeof(float), (u32)loader->m_native_vtx_decl.stride);
-	ASSERT_EQ(2 * sizeof(u16), (u32)loader->m_VertexSize);
-
-	// 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.
-	int count = loader->RunVertices(src, dst, 5, 7);
-	src.Skip(5 * loader->m_VertexSize);
-	dst.Skip(count * loader->m_native_vtx_decl.stride);
-	delete loader;
-
-	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;
-	m_vtx_attr.g0.ByteDequant = 1;
-	loader = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
-	count = loader->RunVertices(src, dst, 1, 7);
-	src.Skip(1 * loader->m_VertexSize);
-	dst.Skip(count * loader->m_native_vtx_decl.stride);
-	ExpectOut(21.0f); ExpectOut(12.0f); ExpectOut(0.0f);
-	delete loader;
+	m_vtx_desc.Position = INDEX16;
+	m_vtx_attr.g0.PosFormat = FORMAT_FLOAT;
+	CreateAndCheckSizes(sizeof(u16));
+	Input<u16>(1); Input<u16>(0);
+	cached_arraybases[ARRAY_POSITION] = m_src.GetPointer();
+	g_main_cp_state.array_strides[ARRAY_POSITION] = sizeof(float); // ;)
+	Input(1.f); Input(2.f); Input(3.f);
+	RunVertices(2);
+	ExpectOut(2); ExpectOut(3); m_dst.Skip(sizeof(float));
+	ExpectOut(1); ExpectOut(2); m_dst.Skip(sizeof(float));
 }
 
-TEST_F(VertexLoaderTest, PositionDirectFloatXYZSpeed)
+class VertexLoaderSpeedTest : public VertexLoaderTest, public ::testing::WithParamInterface<std::tuple<int, int>> {};
+extern int gtest_FormatsAndElementsVertexLoaderSpeedTest_dummy_;
+INSTANTIATE_TEST_CASE_P(
+	FormatsAndElements, VertexLoaderSpeedTest,
+	::testing::Combine(
+		::testing::Values(FORMAT_UBYTE, FORMAT_BYTE, FORMAT_USHORT, FORMAT_SHORT, FORMAT_FLOAT),
+		::testing::Values(0, 1) // elements
+	)
+);
+
+TEST_P(VertexLoaderSpeedTest, PositionDirectAll)
 {
-	m_vtx_desc.Position = 1;        // Direct
-	m_vtx_attr.g0.PosElements = 1;  // XYZ
-	m_vtx_attr.g0.PosFormat = 4;    // Float
-
-	VertexLoaderBase* loader = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
-
-	ASSERT_EQ(3 * sizeof(float), (u32)loader->m_native_vtx_decl.stride);
-	ASSERT_EQ(3 * sizeof(float), (u32)loader->m_VertexSize);
-
+	int format, elements;
+	std::tie(format, elements) = GetParam();
+	const char* map[] = { "u8", "s8", "u16", "s16", "float" };
+	printf("format: %s, elements: %d\n", map[format], elements);
+	m_vtx_desc.Position = DIRECT;
+	m_vtx_attr.g0.PosFormat = format;
+	m_vtx_attr.g0.PosElements = elements;
+	elements += 2;
+	size_t elem_size = 1 << (format / 2);
+	CreateAndCheckSizes(elements * elem_size);
 	for (int i = 0; i < 1000; ++i)
-	{
-		ResetPointers();
-		int count = loader->RunVertices(src, dst, 100000, 7);
-		src.Skip(100000 * loader->m_VertexSize);
-		dst.Skip(count * loader->m_native_vtx_decl.stride);
-	}
-	delete loader;
+		RunVertices(100000);
 }
 
-TEST_F(VertexLoaderTest, PositionDirectU16XYSpeed)
+TEST_P(VertexLoaderSpeedTest, TexCoordSingleElement)
 {
-	m_vtx_desc.Position = 1;        // Direct
-	m_vtx_attr.g0.PosElements = 0;  // XY
-	m_vtx_attr.g0.PosFormat = 2;    // U16
-
-	VertexLoaderBase* loader = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
-
-	ASSERT_EQ(3 * sizeof(float), (u32)loader->m_native_vtx_decl.stride);
-	ASSERT_EQ(2 * sizeof(u16), (u32)loader->m_VertexSize);
-
+	int format, elements;
+	std::tie(format, elements) = GetParam();
+	const char* map[] = { "u8", "s8", "u16", "s16", "float" };
+	printf("format: %s, elements: %d\n", map[format], elements);
+	m_vtx_desc.Position = DIRECT;
+	m_vtx_attr.g0.PosFormat = FORMAT_BYTE;
+	m_vtx_desc.Tex0Coord = DIRECT;
+	m_vtx_attr.g0.Tex0CoordFormat = format;
+	m_vtx_attr.g0.Tex0CoordElements = elements;
+	elements += 1;
+	size_t elem_size = 1 << (format / 2);
+	CreateAndCheckSizes(2 * sizeof(s8)    + elements * elem_size,
+	                    2 * sizeof(float) + elements * sizeof(float));
 	for (int i = 0; i < 1000; ++i)
-	{
-		ResetPointers();
-		int count = loader->RunVertices(src, dst, 100000, 7);
-		src.Skip(100000 * loader->m_VertexSize);
-		dst.Skip(count * loader->m_native_vtx_decl.stride);
-	}
-	delete loader;
+		RunVertices(100000);
 }
 
 TEST_F(VertexLoaderTest, LargeFloatVertexSpeed)
 {
-	// Enables most attributes in floating point direct mode to test speed.
+	// Enables most attributes in floating point indexed mode to test speed.
 	m_vtx_desc.PosMatIdx = 1;
 	m_vtx_desc.Tex0MatIdx = 1;
 	m_vtx_desc.Tex1MatIdx = 1;
@@ -222,54 +255,54 @@ TEST_F(VertexLoaderTest, LargeFloatVertexSpeed)
 	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_desc.Position = INDEX16;
+	m_vtx_desc.Normal = INDEX16;
+	m_vtx_desc.Color0 = INDEX16;
+	m_vtx_desc.Color1 = INDEX16;
+	m_vtx_desc.Tex0Coord = INDEX16;
+	m_vtx_desc.Tex1Coord = INDEX16;
+	m_vtx_desc.Tex2Coord = INDEX16;
+	m_vtx_desc.Tex3Coord = INDEX16;
+	m_vtx_desc.Tex4Coord = INDEX16;
+	m_vtx_desc.Tex5Coord = INDEX16;
+	m_vtx_desc.Tex6Coord = INDEX16;
+	m_vtx_desc.Tex7Coord = INDEX16;
 
 	m_vtx_attr.g0.PosElements = 1;        // XYZ
-	m_vtx_attr.g0.PosFormat = 4;          // Float
+	m_vtx_attr.g0.PosFormat = FORMAT_FLOAT;
 	m_vtx_attr.g0.NormalElements = 1;     // NBT
-	m_vtx_attr.g0.NormalFormat = 4;       // Float
+	m_vtx_attr.g0.NormalFormat = FORMAT_FLOAT;
 	m_vtx_attr.g0.Color0Elements = 1;     // Has Alpha
-	m_vtx_attr.g0.Color0Comp = 5;         // RGBA8888
+	m_vtx_attr.g0.Color0Comp = FORMAT_32B_8888;
 	m_vtx_attr.g0.Color1Elements = 1;     // Has Alpha
-	m_vtx_attr.g0.Color1Comp = 5;         // RGBA8888
+	m_vtx_attr.g0.Color1Comp = FORMAT_32B_8888;
 	m_vtx_attr.g0.Tex0CoordElements = 1;  // ST
-	m_vtx_attr.g0.Tex0CoordFormat = 4;    // Float
+	m_vtx_attr.g0.Tex0CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g1.Tex1CoordElements = 1;  // ST
-	m_vtx_attr.g1.Tex1CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex1CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g1.Tex2CoordElements = 1;  // ST
-	m_vtx_attr.g1.Tex2CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex2CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g1.Tex3CoordElements = 1;  // ST
-	m_vtx_attr.g1.Tex3CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex3CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g1.Tex4CoordElements = 1;  // ST
-	m_vtx_attr.g1.Tex4CoordFormat = 4;    // Float
+	m_vtx_attr.g1.Tex4CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g2.Tex5CoordElements = 1;  // ST
-	m_vtx_attr.g2.Tex5CoordFormat = 4;    // Float
+	m_vtx_attr.g2.Tex5CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g2.Tex6CoordElements = 1;  // ST
-	m_vtx_attr.g2.Tex6CoordFormat = 4;    // Float
+	m_vtx_attr.g2.Tex6CoordFormat = FORMAT_FLOAT;
 	m_vtx_attr.g2.Tex7CoordElements = 1;  // ST
-	m_vtx_attr.g2.Tex7CoordFormat = 4;    // Float
+	m_vtx_attr.g2.Tex7CoordFormat = FORMAT_FLOAT;
 
-	VertexLoaderBase* loader = VertexLoaderBase::CreateVertexLoader(m_vtx_desc, m_vtx_attr);
+	CreateAndCheckSizes(33, 156);
+
+	for (int i = 0; i < 16; i++)
+	{
+		cached_arraybases[i] = m_src.GetPointer();
+		g_main_cp_state.array_strides[i] = 129;
+	}
 
 	// 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();
-		int count = loader->RunVertices(src, dst, 100000, 7);
-		src.Skip(100000 * loader->m_VertexSize);
-		dst.Skip(count * loader->m_native_vtx_decl.stride);
-	}
-	delete loader;
+		RunVertices(100000);
 }