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// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoCommon/VertexLoaderBase.h"
#include <array>
#include <cinttypes>
#include <cstring>
#include <memory>
#include <string>
#include <vector>
#include <fmt/format.h>
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
#include "Common/MsgHandler.h"
#include "VideoCommon/DataReader.h"
#include "VideoCommon/VertexLoader.h"
#include "VideoCommon/VertexLoader_Color.h"
#include "VideoCommon/VertexLoader_Normal.h"
#include "VideoCommon/VertexLoader_Position.h"
#include "VideoCommon/VertexLoader_TextCoord.h"
#ifdef _M_X86_64
#include "VideoCommon/VertexLoaderX64.h"
#elif defined(_M_ARM_64)
#include "VideoCommon/VertexLoaderARM64.h"
#endif
// a hacky implementation to compare two vertex loaders
class VertexLoaderTester : public VertexLoaderBase
{
public:
VertexLoaderTester(std::unique_ptr<VertexLoaderBase> a_, std::unique_ptr<VertexLoaderBase> b_,
const TVtxDesc& vtx_desc, const VAT& vtx_attr)
: VertexLoaderBase(vtx_desc, vtx_attr), a(std::move(a_)), b(std::move(b_))
{
ASSERT(a && b);
if (a->m_vertex_size == b->m_vertex_size && a->m_native_components == b->m_native_components &&
a->m_native_vtx_decl.stride == b->m_native_vtx_decl.stride)
{
// These are generated from the VAT and vertex desc, so they should match.
// m_native_vtx_decl.stride isn't set yet, though.
ASSERT(m_vertex_size == a->m_vertex_size && m_native_components == a->m_native_components);
memcpy(&m_native_vtx_decl, &a->m_native_vtx_decl, sizeof(PortableVertexDeclaration));
}
else
{
PanicAlertFmt("Can't compare vertex loaders that expect different vertex formats!\n"
"a: m_vertex_size {}, m_native_components {:#010x}, stride {}\n"
"b: m_vertex_size {}, m_native_components {:#010x}, stride {}",
a->m_vertex_size, a->m_native_components, a->m_native_vtx_decl.stride,
b->m_vertex_size, b->m_native_components, b->m_native_vtx_decl.stride);
}
}
int RunVertices(DataReader src, DataReader dst, int count) override
{
buffer_a.resize(count * a->m_native_vtx_decl.stride + 4);
buffer_b.resize(count * b->m_native_vtx_decl.stride + 4);
int count_a =
a->RunVertices(src, DataReader(buffer_a.data(), buffer_a.data() + buffer_a.size()), count);
int count_b =
b->RunVertices(src, DataReader(buffer_b.data(), buffer_b.data() + buffer_b.size()), count);
if (count_a != count_b)
{
ERROR_LOG_FMT(
VIDEO,
"The two vertex loaders have loaded a different amount of vertices (a: {}, b: {}).",
count_a, count_b);
}
if (memcmp(buffer_a.data(), buffer_b.data(),
std::min(count_a, count_b) * m_native_vtx_decl.stride))
{
ERROR_LOG_FMT(VIDEO,
"The two vertex loaders have loaded different data. Configuration:"
"\nVertex desc:\n{}\n\nVertex attr:\n{}",
m_VtxDesc, m_VtxAttr);
}
memcpy(dst.GetPointer(), buffer_a.data(), count_a * m_native_vtx_decl.stride);
m_numLoadedVertices += count;
return count_a;
}
private:
std::unique_ptr<VertexLoaderBase> a;
std::unique_ptr<VertexLoaderBase> b;
std::vector<u8> buffer_a;
std::vector<u8> buffer_b;
};
u32 VertexLoaderBase::GetVertexSize(const TVtxDesc& vtx_desc, const VAT& vtx_attr)
{
u32 size = 0;
if (vtx_desc.low.PosMatIdx)
size++;
for (auto texmtxidx : vtx_desc.low.TexMatIdx)
{
if (texmtxidx)
size++;
}
size += VertexLoader_Position::GetSize(vtx_desc.low.Position, vtx_attr.g0.PosFormat,
vtx_attr.g0.PosElements);
size += VertexLoader_Normal::GetSize(vtx_desc.low.Normal, vtx_attr.g0.NormalFormat,
vtx_attr.g0.NormalElements, vtx_attr.g0.NormalIndex3);
for (u32 i = 0; i < vtx_desc.low.Color.Size(); i++)
{
size += VertexLoader_Color::GetSize(vtx_desc.low.Color[i], vtx_attr.GetColorFormat(i));
}
for (u32 i = 0; i < vtx_desc.high.TexCoord.Size(); i++)
{
size += VertexLoader_TextCoord::GetSize(vtx_desc.high.TexCoord[i], vtx_attr.GetTexFormat(i),
vtx_attr.GetTexElements(i));
}
return size;
}
u32 VertexLoaderBase::GetVertexComponents(const TVtxDesc& vtx_desc, const VAT& vtx_attr)
{
u32 components = 0;
if (vtx_desc.low.PosMatIdx)
components |= VB_HAS_POSMTXIDX;
for (u32 i = 0; i < vtx_desc.low.TexMatIdx.Size(); i++)
{
if (vtx_desc.low.TexMatIdx[i])
components |= VB_HAS_TEXMTXIDX0 << i;
}
// Vertices always have positions; thus there is no VB_HAS_POS as it would always be set
if (vtx_desc.low.Normal != VertexComponentFormat::NotPresent)
{
components |= VB_HAS_NRM0;
if (vtx_attr.g0.NormalElements == NormalComponentCount::NBT)
components |= VB_HAS_NRM1 | VB_HAS_NRM2;
}
for (u32 i = 0; i < vtx_desc.low.Color.Size(); i++)
{
if (vtx_desc.low.Color[i] != VertexComponentFormat::NotPresent)
components |= VB_HAS_COL0 << i;
}
for (u32 i = 0; i < vtx_desc.high.TexCoord.Size(); i++)
{
if (vtx_desc.high.TexCoord[i] != VertexComponentFormat::NotPresent)
components |= VB_HAS_UV0 << i;
}
return components;
}
std::unique_ptr<VertexLoaderBase> VertexLoaderBase::CreateVertexLoader(const TVtxDesc& vtx_desc,
const VAT& vtx_attr)
{
std::unique_ptr<VertexLoaderBase> loader = nullptr;
//#define COMPARE_VERTEXLOADERS
#if defined(_M_X86_64)
loader = std::make_unique<VertexLoaderX64>(vtx_desc, vtx_attr);
#elif defined(_M_ARM_64)
loader = std::make_unique<VertexLoaderARM64>(vtx_desc, vtx_attr);
#endif
// Use the software loader as a fallback
// (not currently applicable, as both VertexLoaderX64 and VertexLoaderARM64
// are always usable, but if a loader that only works on some CPUs is created
// then this fallback would be used)
if (!loader)
loader = std::make_unique<VertexLoader>(vtx_desc, vtx_attr);
#if defined(COMPARE_VERTEXLOADERS)
return std::make_unique<VertexLoaderTester>(
std::make_unique<VertexLoader>(vtx_desc, vtx_attr), // the software one
std::move(loader), // the new one to compare
vtx_desc, vtx_attr);
#else
return loader;
#endif
}
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