From 78f49d061a1c5d1c3056244db42f2f00bed29c6b Mon Sep 17 00:00:00 2001
From: StapleButter <thetotalworm@gmail.com>
Date: Fri, 10 Feb 2017 16:50:26 +0100
Subject: [PATCH] base for software renderer

---
 GPU3D.cpp      |  9 ++++++++-
 GPU3D.h        | 11 ++++++++++
 GPU3D_Soft.cpp | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
 melonDS.cbp    |  1 +
 4 files changed, 75 insertions(+), 1 deletion(-)
 create mode 100644 GPU3D_Soft.cpp

diff --git a/GPU3D.cpp b/GPU3D.cpp
index bf323c1a..1ee350e8 100644
--- a/GPU3D.cpp
+++ b/GPU3D.cpp
@@ -177,11 +177,15 @@ bool Init()
     CmdFIFO = new FIFO<CmdFIFOEntry>(256);
     CmdPIPE = new FIFO<CmdFIFOEntry>(4);
 
+    if (!SoftRenderer::Init()) return false;
+
     return true;
 }
 
 void DeInit()
 {
+    SoftRenderer::DeInit();
+
     delete CmdFIFO;
     delete CmdPIPE;
 }
@@ -228,6 +232,8 @@ void Reset()
     CurPolygonRAM = &PolygonRAM[0];
     NumVertices = 0;
     NumPolygons = 0;
+
+    SoftRenderer::Reset();
 }
 
 
@@ -1152,7 +1158,8 @@ void CheckFIFODMA()
 
 void VBlank()
 {
-    // TODO: render
+    // TODO: only do this if a SwapBuffers command was issued
+    SoftRenderer::RenderFrame(CurVertexRAM, CurPolygonRAM, NumPolygons);
 
     CurRAMBank = CurRAMBank?0:1;
     CurVertexRAM = &VertexRAM[CurRAMBank ? 6144 : 0];
diff --git a/GPU3D.h b/GPU3D.h
index 19356d8e..d65fa9a7 100644
--- a/GPU3D.h
+++ b/GPU3D.h
@@ -53,6 +53,17 @@ void Write8(u32 addr, u8 val);
 void Write16(u32 addr, u16 val);
 void Write32(u32 addr, u32 val);
 
+namespace SoftRenderer
+{
+
+bool Init();
+void DeInit();
+void Reset();
+
+void RenderFrame(Vertex* vertices, Polygon* polygons, int npolys);
+
+}
+
 }
 
 #endif
diff --git a/GPU3D_Soft.cpp b/GPU3D_Soft.cpp
new file mode 100644
index 00000000..38d3539c
--- /dev/null
+++ b/GPU3D_Soft.cpp
@@ -0,0 +1,55 @@
+/*
+    Copyright 2016-2017 StapleButter
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include "NDS.h"
+#include "GPU3D.h"
+
+
+namespace GPU3D
+{
+namespace SoftRenderer
+{
+
+u8 ColorBuffer[256*192 * 4];
+
+
+bool Init()
+{
+    //
+}
+
+void DeInit()
+{
+    //
+}
+
+void Reset()
+{
+    memset(ColorBuffer, 0, 256*192 * 4);
+}
+
+
+void RenderFrame(Vertex* vertices, Polygon* polygons, int npolys)
+{
+    //
+}
+
+}
+}
diff --git a/melonDS.cbp b/melonDS.cbp
index fb32d8b7..90764d90 100644
--- a/melonDS.cbp
+++ b/melonDS.cbp
@@ -58,6 +58,7 @@
 		<Unit filename="GPU2D.h" />
 		<Unit filename="GPU3D.cpp" />
 		<Unit filename="GPU3D.h" />
+		<Unit filename="GPU3D_Soft.cpp" />
 		<Unit filename="NDS.cpp" />
 		<Unit filename="NDS.h" />
 		<Unit filename="NDSCart.cpp" />