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dolphin/Source/UnitTests/VideoCommon/VertexLoaderTest.cpp

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// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <limits>
#include <memory>
#include <tuple>
#include <type_traits>
#include <unordered_set>
#include <gtest/gtest.h> // NOLINT
#include "Common/BitUtils.h"
#include "Common/Common.h"
#include "VideoCommon/CPMemory.h"
#include "VideoCommon/DataReader.h"
#include "VideoCommon/OpcodeDecoding.h"
#include "VideoCommon/VertexLoaderBase.h"
#include "VideoCommon/VertexLoaderManager.h"
TEST(VertexLoaderUID, UniqueEnough)
{
std::unordered_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;
EXPECT_EQ(uids.end(), uids.find(VertexLoaderUID(vtx_desc, vat)));
uids.insert(VertexLoaderUID(vtx_desc, vat));
vat.g0.Hex = 0xFFFFFFFF;
vat.g1.Hex = 0xFFFFFFFF;
vat.g2.Hex = 0xFFFFFFFF;
EXPECT_EQ(uids.end(), uids.find(VertexLoaderUID(vtx_desc, vat)));
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
{
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();
}
void CreateAndCheckSizes(size_t input_size, size_t output_size)
{
m_loader = 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)
{
// Write swapped.
m_src.Write<T, true>(val);
}
void ExpectOut(float expected)
{
// Read unswapped.
const float actual = m_dst.Read<float, false>();
if (!actual || actual != actual)
EXPECT_EQ(Common::BitCast<u32>(expected), Common::BitCast<u32>(actual));
else
EXPECT_EQ(expected, actual);
}
void RunVertices(int count, int expected_count = -1)
{
if (expected_count == -1)
expected_count = count;
ResetPointers();
int actual_count = m_loader->RunVertices(m_src, m_dst, count);
EXPECT_EQ(actual_count, expected_count);
}
void ResetPointers()
{
m_src = DataReader(input_memory, input_memory + sizeof(input_memory));
m_dst = DataReader(output_memory, output_memory + sizeof(output_memory));
}
DataReader m_src;
DataReader m_dst;
TVtxDesc m_vtx_desc;
VAT m_vtx_attr;
std::unique_ptr<VertexLoaderBase> m_loader;
};
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)
{
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);
VertexLoaderManager::cached_arraybases[ARRAY_POSITION] = m_src.GetPointer();
g_main_cp_state.array_strides[ARRAY_POSITION] = elements * elem_size;
}
CreateAndCheckSizes(input_size, elements * sizeof(float));
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;
default:
FAIL() << "Unknown format";
}
ExpectOut(f * scale);
ExpectOut(g * scale);
}
}
TEST_F(VertexLoaderTest, PositionIndex16FloatXY)
{
m_vtx_desc.Position = INDEX16;
m_vtx_attr.g0.PosFormat = FORMAT_FLOAT;
CreateAndCheckSizes(sizeof(u16), 2 * sizeof(float));
Input<u16>(1);
Input<u16>(0);
VertexLoaderManager::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);
ExpectOut(1);
ExpectOut(2);
}
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)
{
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 = static_cast<size_t>(1) << (format / 2);
CreateAndCheckSizes(elements * elem_size, elements * sizeof(float));
for (int i = 0; i < 1000; ++i)
RunVertices(100000);
}
TEST_P(VertexLoaderSpeedTest, TexCoordSingleElement)
{
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 = static_cast<size_t>(1) << (format / 2);
CreateAndCheckSizes(2 * sizeof(s8) + elements * elem_size,
2 * sizeof(float) + elements * sizeof(float));
for (int i = 0; i < 1000; ++i)
RunVertices(100000);
}
TEST_F(VertexLoaderTest, LargeFloatVertexSpeed)
{
// 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;
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 = 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 = FORMAT_FLOAT;
m_vtx_attr.g0.NormalElements = 1; // NBT
m_vtx_attr.g0.NormalFormat = FORMAT_FLOAT;
m_vtx_attr.g0.Color0Elements = 1; // Has Alpha
m_vtx_attr.g0.Color0Comp = FORMAT_32B_8888;
m_vtx_attr.g0.Color1Elements = 1; // Has Alpha
m_vtx_attr.g0.Color1Comp = FORMAT_32B_8888;
m_vtx_attr.g0.Tex0CoordElements = 1; // ST
m_vtx_attr.g0.Tex0CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g1.Tex1CoordElements = 1; // ST
m_vtx_attr.g1.Tex1CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g1.Tex2CoordElements = 1; // ST
m_vtx_attr.g1.Tex2CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g1.Tex3CoordElements = 1; // ST
m_vtx_attr.g1.Tex3CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g1.Tex4CoordElements = 1; // ST
m_vtx_attr.g1.Tex4CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g2.Tex5CoordElements = 1; // ST
m_vtx_attr.g2.Tex5CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g2.Tex6CoordElements = 1; // ST
m_vtx_attr.g2.Tex6CoordFormat = FORMAT_FLOAT;
m_vtx_attr.g2.Tex7CoordElements = 1; // ST
m_vtx_attr.g2.Tex7CoordFormat = FORMAT_FLOAT;
CreateAndCheckSizes(33, 156);
for (int i = 0; i < 12; i++)
{
VertexLoaderManager::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)
RunVertices(100000);
}
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