Merge branch 'master' into buffer_storage

1 files changed, 176 insertions, 0 deletions

diff --git a/Source/Core/VideoBackends/Software/SetupUnit.cpp b/Source/Core/VideoBackends/Software/SetupUnit.cpp
new file mode 100644
index 0000000000..b08584e0a9
--- /dev/null
+++ b/Source/Core/VideoBackends/Software/SetupUnit.cpp
@@ -0,0 +1,176 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "SetupUnit.h"
+
+#include "CPMemLoader.h"
+#include "OpcodeDecoder.h"
+#include "SWStatistics.h"
+#include "Clipper.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_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];
+	}*/
+}