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// Copyright 2009 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "Common/ChunkFile.h"
#include "VideoBackends/Software/Clipper.h"
#include "VideoBackends/Software/CPMemLoader.h"
#include "VideoBackends/Software/OpcodeDecoder.h"
#include "VideoBackends/Software/SetupUnit.h"
#include "VideoBackends/Software/SWStatistics.h"
void SetupUnit::Init(u8 primitiveType)
{
m_PrimType = primitiveType;
m_VertexCounter = 0;
m_VertPointer[0] = &m_Vertices[0];
m_VertPointer[1] = &m_Vertices[1];
m_VertPointer[2] = &m_Vertices[2];
m_VertWritePointer = m_VertPointer[0];
}
void SetupUnit::SetupVertex()
{
switch (m_PrimType)
{
case GX_DRAW_QUADS:
SetupQuad();
break;
case GX_DRAW_QUADS_2:
WARN_LOG(VIDEO, "Non-standard primitive drawing command GL_DRAW_QUADS_2");
SetupQuad();
break;
case GX_DRAW_TRIANGLES:
SetupTriangle();
break;
case GX_DRAW_TRIANGLE_STRIP:
SetupTriStrip();
break;
case GX_DRAW_TRIANGLE_FAN:
SetupTriFan();
break;
case GX_DRAW_LINES:
SetupLine();
break;
case GX_DRAW_LINE_STRIP:
SetupLineStrip();
break;
case GX_DRAW_POINTS:
SetupPoint();
break;
}
}
void SetupUnit::SetupQuad()
{
if (m_VertexCounter < 2)
{
m_VertexCounter++;
m_VertWritePointer = m_VertPointer[m_VertexCounter];
return;
}
Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
m_VertexCounter++;
m_VertexCounter &= 3;
m_VertWritePointer = &m_Vertices[m_VertexCounter & 1];
OutputVertexData* temp = m_VertPointer[1];
m_VertPointer[1] = m_VertPointer[2];
m_VertPointer[2] = temp;
}
void SetupUnit::SetupTriangle()
{
if (m_VertexCounter < 2)
{
m_VertexCounter++;
m_VertWritePointer = m_VertPointer[m_VertexCounter];
return;
}
Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
m_VertexCounter = 0;
m_VertWritePointer = m_VertPointer[0];
}
void SetupUnit::SetupTriStrip()
{
if (m_VertexCounter < 2)
{
m_VertexCounter++;
m_VertWritePointer = m_VertPointer[m_VertexCounter];
return;
}
Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
m_VertexCounter++;
m_VertPointer[2 - (m_VertexCounter & 1)] = m_VertPointer[0];
m_VertWritePointer = m_VertPointer[0];
m_VertPointer[0] = &m_Vertices[(m_VertexCounter + 1) % 3];
}
void SetupUnit::SetupTriFan()
{
if (m_VertexCounter < 2)
{
m_VertexCounter++;
m_VertWritePointer = m_VertPointer[m_VertexCounter];
return;
}
Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
m_VertexCounter++;
m_VertPointer[1] = m_VertPointer[2];
m_VertPointer[2] = &m_Vertices[2 - (m_VertexCounter & 1)];
m_VertWritePointer = m_VertPointer[2];
}
void SetupUnit::SetupLine()
{
if (m_VertexCounter < 1)
{
m_VertexCounter++;
m_VertWritePointer = m_VertPointer[m_VertexCounter];
return;
}
Clipper::ProcessLine(m_VertPointer[0], m_VertPointer[1]);
m_VertexCounter = 0;
m_VertWritePointer = m_VertPointer[0];
}
void SetupUnit::SetupLineStrip()
{
if (m_VertexCounter < 1)
{
m_VertexCounter++;
m_VertWritePointer = m_VertPointer[m_VertexCounter];
return;
}
m_VertexCounter++;
Clipper::ProcessLine(m_VertPointer[0], m_VertPointer[1]);
m_VertWritePointer = m_VertPointer[0];
m_VertPointer[0] = m_VertPointer[1];
m_VertPointer[1] = &m_Vertices[m_VertexCounter & 1];
}
void SetupUnit::SetupPoint()
{}
void SetupUnit::DoState(PointerWrap &p)
{
// TODO: some or all of this is making the save states stop working once Dolphin is closed...sometimes (usually)
// I have no idea what specifically is wrong, or if this is even important. Disabling it doesn't seem to make any noticible difference...
/* p.Do(m_PrimType);
p.Do(m_VertexCounter);
for (int i = 0; i < 3; ++i)
m_Vertices[i].DoState(p);
if (p.GetMode() == PointerWrap::MODE_READ)
{
m_VertPointer[0] = &m_Vertices[0];
m_VertPointer[1] = &m_Vertices[1];
m_VertPointer[2] = &m_Vertices[2];
m_VertWritePointer = m_VertPointer[0];
}*/
}
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