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// Copyright 2009 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <limits>
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
#include "VideoBackends/Software/Clipper.h"
#include "VideoBackends/Software/DebugUtil.h"
#include "VideoBackends/Software/NativeVertexFormat.h"
#include "VideoBackends/Software/Rasterizer.h"
#include "VideoBackends/Software/SetupUnit.h"
#include "VideoBackends/Software/SWVertexLoader.h"
#include "VideoBackends/Software/Tev.h"
#include "VideoBackends/Software/TransformUnit.h"
#include "VideoCommon/DataReader.h"
#include "VideoCommon/IndexGenerator.h"
#include "VideoCommon/OpcodeDecoding.h"
#include "VideoCommon/PixelShaderManager.h"
#include "VideoCommon/Statistics.h"
#include "VideoCommon/VertexLoaderBase.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VideoConfig.h"
#include "VideoCommon/XFMemory.h"
class NullNativeVertexFormat : public NativeVertexFormat
{
public:
NullNativeVertexFormat(const PortableVertexDeclaration& _vtx_decl) { vtx_decl = _vtx_decl; }
void SetupVertexPointers() override {}
};
NativeVertexFormat* SWVertexLoader::CreateNativeVertexFormat(const PortableVertexDeclaration& vtx_decl)
{
return new NullNativeVertexFormat(vtx_decl);
}
SWVertexLoader::SWVertexLoader()
{
LocalVBuffer.resize(MAXVBUFFERSIZE);
LocalIBuffer.resize(MAXIBUFFERSIZE);
m_SetupUnit = new SetupUnit;
}
SWVertexLoader::~SWVertexLoader()
{
delete m_SetupUnit;
m_SetupUnit = nullptr;
}
void SWVertexLoader::ResetBuffer(u32 stride)
{
s_pCurBufferPointer = s_pBaseBufferPointer = LocalVBuffer.data();
s_pEndBufferPointer = s_pCurBufferPointer + LocalVBuffer.size();
IndexGenerator::Start(GetIndexBuffer());
}
void SWVertexLoader::vFlush(bool useDstAlpha)
{
DebugUtil::OnObjectBegin();
u8 primitiveType = 0;
switch (current_primitive_type)
{
case PRIMITIVE_POINTS:
primitiveType = GX_DRAW_POINTS;
break;
case PRIMITIVE_LINES:
primitiveType = GX_DRAW_LINES;
break;
case PRIMITIVE_TRIANGLES:
primitiveType = g_ActiveConfig.backend_info.bSupportsPrimitiveRestart ? GX_DRAW_TRIANGLE_STRIP : GX_DRAW_TRIANGLES;
break;
}
m_SetupUnit->Init(primitiveType);
// set all states with are stored within video sw
for (int i = 0; i < 4; i++)
{
Rasterizer::SetTevReg(i, Tev::RED_C, PixelShaderManager::constants.kcolors[i][0]);
Rasterizer::SetTevReg(i, Tev::GRN_C, PixelShaderManager::constants.kcolors[i][1]);
Rasterizer::SetTevReg(i, Tev::BLU_C, PixelShaderManager::constants.kcolors[i][2]);
Rasterizer::SetTevReg(i, Tev::ALP_C, PixelShaderManager::constants.kcolors[i][3]);
}
for (u32 i = 0; i < IndexGenerator::GetIndexLen(); i++)
{
u16 index = LocalIBuffer[i];
if (index == 0xffff)
{
// primitive restart
m_SetupUnit->Init(primitiveType);
continue;
}
memset(&m_Vertex, 0, sizeof(m_Vertex));
// Super Mario Sunshine requires those to be zero for those debug boxes.
memset(&m_Vertex.color, 0, sizeof(m_Vertex.color));
// parse the videocommon format to our own struct format (m_Vertex)
SetFormat(g_main_cp_state.last_id, primitiveType);
ParseVertex(VertexLoaderManager::GetCurrentVertexFormat()->GetVertexDeclaration(), index);
// transform this vertex so that it can be used for rasterization (outVertex)
OutputVertexData* outVertex = m_SetupUnit->GetVertex();
TransformUnit::TransformPosition(&m_Vertex, outVertex);
memset(&outVertex->normal, 0, sizeof(outVertex->normal));
if (VertexLoaderManager::g_current_components & VB_HAS_NRM0)
{
TransformUnit::TransformNormal(&m_Vertex, (VertexLoaderManager::g_current_components & VB_HAS_NRM2) != 0, outVertex);
}
TransformUnit::TransformColor(&m_Vertex, outVertex);
TransformUnit::TransformTexCoord(&m_Vertex, outVertex, m_TexGenSpecialCase);
// assemble and rasterize the primitive
m_SetupUnit->SetupVertex();
INCSTAT(stats.thisFrame.numVerticesLoaded)
}
DebugUtil::OnObjectEnd();
}
void SWVertexLoader::SetFormat(u8 attributeIndex, u8 primitiveType)
{
// matrix index from xf regs or cp memory?
if (xfmem.MatrixIndexA.PosNormalMtxIdx != g_main_cp_state.matrix_index_a.PosNormalMtxIdx ||
xfmem.MatrixIndexA.Tex0MtxIdx != g_main_cp_state.matrix_index_a.Tex0MtxIdx ||
xfmem.MatrixIndexA.Tex1MtxIdx != g_main_cp_state.matrix_index_a.Tex1MtxIdx ||
xfmem.MatrixIndexA.Tex2MtxIdx != g_main_cp_state.matrix_index_a.Tex2MtxIdx ||
xfmem.MatrixIndexA.Tex3MtxIdx != g_main_cp_state.matrix_index_a.Tex3MtxIdx ||
xfmem.MatrixIndexB.Tex4MtxIdx != g_main_cp_state.matrix_index_b.Tex4MtxIdx ||
xfmem.MatrixIndexB.Tex5MtxIdx != g_main_cp_state.matrix_index_b.Tex5MtxIdx ||
xfmem.MatrixIndexB.Tex6MtxIdx != g_main_cp_state.matrix_index_b.Tex6MtxIdx ||
xfmem.MatrixIndexB.Tex7MtxIdx != g_main_cp_state.matrix_index_b.Tex7MtxIdx)
{
ERROR_LOG(VIDEO, "Matrix indices don't match");
}
m_Vertex.posMtx = xfmem.MatrixIndexA.PosNormalMtxIdx;
m_Vertex.texMtx[0] = xfmem.MatrixIndexA.Tex0MtxIdx;
m_Vertex.texMtx[1] = xfmem.MatrixIndexA.Tex1MtxIdx;
m_Vertex.texMtx[2] = xfmem.MatrixIndexA.Tex2MtxIdx;
m_Vertex.texMtx[3] = xfmem.MatrixIndexA.Tex3MtxIdx;
m_Vertex.texMtx[4] = xfmem.MatrixIndexB.Tex4MtxIdx;
m_Vertex.texMtx[5] = xfmem.MatrixIndexB.Tex5MtxIdx;
m_Vertex.texMtx[6] = xfmem.MatrixIndexB.Tex6MtxIdx;
m_Vertex.texMtx[7] = xfmem.MatrixIndexB.Tex7MtxIdx;
// special case if only pos and tex coord 0 and tex coord input is AB11
// http://libogc.devkitpro.org/gx_8h.html#a55a426a3ff796db584302bddd829f002
m_TexGenSpecialCase =
VertexLoaderManager::g_current_components == VB_HAS_UV0 &&
xfmem.texMtxInfo[0].projection == XF_TEXPROJ_ST;
}
template <typename T, typename I>
static T ReadNormalized(I value)
{
T casted = (T) value;
if (!std::numeric_limits<T>::is_integer && std::numeric_limits<I>::is_integer)
{
// normalize if non-float is converted to a float
casted *= (T) (1.0 / std::numeric_limits<I>::max());
}
return casted;
}
template <typename T, bool swap = false>
static void ReadVertexAttribute(T* dst, DataReader src, const AttributeFormat& format, int base_component, int components, bool reverse)
{
if (format.enable)
{
src.Skip(format.offset);
src.Skip(base_component * (1<<(format.type>>1)));
int i;
for (i = 0; i < std::min(format.components - base_component, components); i++)
{
int i_dst = reverse ? components - i - 1 : i;
switch (format.type)
{
case VAR_UNSIGNED_BYTE:
dst[i_dst] = ReadNormalized<T, u8>(src.Read<u8, swap>());
break;
case VAR_BYTE:
dst[i_dst] = ReadNormalized<T, s8>(src.Read<s8, swap>());
break;
case VAR_UNSIGNED_SHORT:
dst[i_dst] = ReadNormalized<T, u16>(src.Read<u16, swap>());
break;
case VAR_SHORT:
dst[i_dst] = ReadNormalized<T, s16>(src.Read<s16, swap>());
break;
case VAR_FLOAT:
dst[i_dst] = ReadNormalized<T, float>(src.Read<float, swap>());
break;
}
_assert_msg_(VIDEO, !format.integer || format.type != VAR_FLOAT, "only non-float values are allowed to be streamed as integer");
}
for (; i < components; i++)
{
int i_dst = reverse ? components - i - 1 : i;
dst[i_dst] = i == 3;
}
}
}
void SWVertexLoader::ParseVertex(const PortableVertexDeclaration& vdec, int index)
{
DataReader src(LocalVBuffer.data(), LocalVBuffer.data() + LocalVBuffer.size());
src.Skip(index * vdec.stride);
ReadVertexAttribute<float>(&m_Vertex.position[0], src, vdec.position, 0, 3, false);
for (int i = 0; i < 3; i++)
{
ReadVertexAttribute<float>(&m_Vertex.normal[i][0], src, vdec.normals[i], 0, 3, false);
}
for (int i = 0; i < 2; i++)
{
ReadVertexAttribute<u8>(m_Vertex.color[i], src, vdec.colors[i], 0, 4, true);
}
for (int i = 0; i < 8; i++)
{
ReadVertexAttribute<float>(m_Vertex.texCoords[i], src, vdec.texcoords[i], 0, 2, false);
// the texmtr is stored as third component of the texCoord
if (vdec.texcoords[i].components >= 3)
{
ReadVertexAttribute<u8>(&m_Vertex.texMtx[i], src, vdec.texcoords[i], 2, 1, false);
}
}
ReadVertexAttribute<u8>(&m_Vertex.posMtx, src, vdec.posmtx, 0, 1, false);
}
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