172 lines
4.0 KiB
C++
172 lines
4.0 KiB
C++
// Copyright (C) 2003-2009 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "SetupUnit.h"
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#include "CPMemLoader.h"
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#include "OpcodeDecoder.h"
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#include "SWStatistics.h"
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#include "Clipper.h"
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void SetupUnit::Init(u8 primitiveType)
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{
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m_PrimType = primitiveType;
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m_VertexCounter = 0;
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m_VertPointer[0] = &m_Vertices[0];
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m_VertPointer[1] = &m_Vertices[1];
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m_VertPointer[2] = &m_Vertices[2];
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m_VertWritePointer = m_VertPointer[0];
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}
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void SetupUnit::SetupVertex()
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{
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switch(m_PrimType)
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{
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case GX_DRAW_QUADS:
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SetupQuad();
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break;
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case GX_DRAW_TRIANGLES:
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SetupTriangle();
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break;
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case GX_DRAW_TRIANGLE_STRIP:
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SetupTriStrip();
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break;
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case GX_DRAW_TRIANGLE_FAN:
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SetupTriFan();
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break;
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case GX_DRAW_LINES:
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SetupLine();
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break;
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case GX_DRAW_LINE_STRIP:
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SetupLineStrip();
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break;
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case GX_DRAW_POINTS:
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SetupPoint();
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break;
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}
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}
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void SetupUnit::SetupQuad()
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{
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if (m_VertexCounter < 2)
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{
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m_VertexCounter++;
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m_VertWritePointer = m_VertPointer[m_VertexCounter];
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return;
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}
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Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
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m_VertexCounter++;
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m_VertexCounter &= 3;
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m_VertWritePointer = &m_Vertices[m_VertexCounter & 1];
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OutputVertexData* temp = m_VertPointer[1];
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m_VertPointer[1] = m_VertPointer[2];
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m_VertPointer[2] = temp;
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}
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void SetupUnit::SetupTriangle()
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{
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if (m_VertexCounter < 2)
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{
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m_VertexCounter++;
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m_VertWritePointer = m_VertPointer[m_VertexCounter];
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return;
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}
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Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
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m_VertexCounter = 0;
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m_VertWritePointer = m_VertPointer[0];
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}
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void SetupUnit::SetupTriStrip()
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{
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if (m_VertexCounter < 2)
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{
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m_VertexCounter++;
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m_VertWritePointer = m_VertPointer[m_VertexCounter];
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return;
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}
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Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
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m_VertexCounter++;
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m_VertPointer[2 - (m_VertexCounter & 1)] = m_VertPointer[0];
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m_VertWritePointer = m_VertPointer[0];
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m_VertPointer[0] = &m_Vertices[(m_VertexCounter + 1) % 3];
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}
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void SetupUnit::SetupTriFan()
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{
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if (m_VertexCounter < 2)
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{
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m_VertexCounter++;
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m_VertWritePointer = m_VertPointer[m_VertexCounter];
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return;
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}
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Clipper::ProcessTriangle(m_VertPointer[0], m_VertPointer[1], m_VertPointer[2]);
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m_VertexCounter++;
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m_VertPointer[1] = m_VertPointer[2];
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m_VertPointer[2] = &m_Vertices[2 - (m_VertexCounter & 1)];
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m_VertWritePointer = m_VertPointer[2];
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}
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void SetupUnit::SetupLine()
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{
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if (m_VertexCounter < 1)
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{
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m_VertexCounter++;
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m_VertWritePointer = m_VertPointer[m_VertexCounter];
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return;
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}
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Clipper::ProcessLine(m_VertPointer[0], m_VertPointer[1]);
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m_VertexCounter = 0;
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m_VertWritePointer = m_VertPointer[0];
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}
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void SetupUnit::SetupLineStrip()
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{
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if (m_VertexCounter < 1)
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{
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m_VertexCounter++;
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m_VertWritePointer = m_VertPointer[m_VertexCounter];
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return;
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}
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m_VertexCounter++;
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Clipper::ProcessLine(m_VertPointer[0], m_VertPointer[1]);
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m_VertWritePointer = m_VertPointer[0];
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m_VertPointer[0] = m_VertPointer[1];
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m_VertPointer[1] = &m_Vertices[m_VertexCounter & 1];
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}
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void SetupUnit::SetupPoint()
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{}
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