softgpu: Add transform pipeline functionality.

CMakeLists.txt

@@ -1017,6 +1017,8 @@ add_library(GPU OBJECT
 	GPU/Null/NullGpu.h
 	GPU/Software/SoftGpu.cpp
 	GPU/Software/SoftGpu.h
+	GPU/Software/TransformUnit.cpp
+	GPU/Software/TransformUnit.h
 	GPU/ge_constants.h)
 setup_target_project(GPU GPU)
 

GPU/CMakeLists.txt

@@ -15,6 +15,7 @@ set(SRCS
 	GLES/VertexShaderGenerator.cpp
 	Null/NullGpu.cpp
 	Software/SoftGpu.cpp
+	Software/TransformUnit.cpp
 )
 
 set(SRCS ${SRCS})

GPU/GPU.vcxproj

@@ -163,6 +163,7 @@
     <ClInclude Include="Math3D.h" />
     <ClInclude Include="Null\NullGpu.h" />
     <ClInclude Include="Software\SoftGpu.h" />
+    <ClInclude Include="Software\TransformUnit.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\ext\xbrz\xbrz.cpp" />
@@ -185,6 +186,7 @@
     <ClCompile Include="Math3D.cpp" />
     <ClCompile Include="Null\NullGpu.cpp" />
     <ClCompile Include="Software\SoftGpu.cpp" />
+    <ClCompile Include="Software\TransformUnit.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Common\Common.vcxproj">

GPU/GPU.vcxproj.filters

@@ -71,6 +71,9 @@
     <ClInclude Include="Software\SoftGpu.h">
       <Filter>Software</Filter>
     </ClInclude>
+    <ClInclude Include="Software\TransformUnit.h">
+      <Filter>Software</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Math3D.cpp">
@@ -123,6 +126,9 @@
     <ClCompile Include="Software\SoftGpu.cpp">
       <Filter>Software</Filter>
     </ClCompile>
+    <ClCompile Include="Software\TransformUnit.cpp">
+      <Filter>Software</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="CMakeLists.txt" />

GPU/Software/TransformUnit.cpp

@@ -0,0 +1,49 @@
+// Copyright (c) 2013- PPSSPP Project.
+
+// This program 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, version 2.0 or later versions.
+
+// This program 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official git repository and contact information can be found at
+// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
+
+#include "TransformUnit.h"
+#include "../GPUState.h"
+
+WorldCoords TransformUnit::ModelToWorld(const ModelCoords& coords)
+{
+	Mat3x3<float> world_matrix(gstate.worldMatrix);
+	return WorldCoords(world_matrix * coords) + Vec3<float>(gstate.worldMatrix[9], gstate.worldMatrix[10], gstate.worldMatrix[11]);
+}
+
+ViewCoords TransformUnit::WorldToView(const WorldCoords& coords)
+{
+	Mat3x3<float> view_matrix(gstate.viewMatrix);
+	return ViewCoords(view_matrix * coords) + Vec3<float>(gstate.viewMatrix[9], gstate.viewMatrix[10], gstate.viewMatrix[11]);
+}
+
+ClipCoords TransformUnit::ViewToClip(const ViewCoords& coords)
+{
+	ClipCoords ret;
+	return ret;
+}
+
+ScreenCoords TransformUnit::ClipToScreen(const ClipCoords& coords)
+{
+	ScreenCoords ret;
+	return ret;
+}
+
+DrawingCoords TransformUnit::ScreenToDrawing(const ScreenCoords& coords)
+{
+	DrawingCoords ret;
+	return ret;
+}

GPU/Software/TransformUnit.h

@@ -0,0 +1,47 @@
+// Copyright (c) 2013- PPSSPP Project.
+
+// This program 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, version 2.0 or later versions.
+
+// This program 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official git repository and contact information can be found at
+// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
+
+#pragma once
+
+#include "CommonTypes.h"
+#include "../Math3D.h"
+
+typedef u16 fixed16;
+typedef u16 u10; // TODO: erm... :/
+
+typedef Vec3<float> ModelCoords;
+typedef Vec3<float> WorldCoords;
+typedef Vec3<float> ViewCoords;
+typedef Vec4<float> ClipCoords; // Range: -w <= x/y/z <= w
+
+struct ScreenCoords
+{
+	fixed16 x;
+	fixed16 y;
+	u16 z;
+};
+
+typedef Vec2<u10> DrawingCoords;
+
+class TransformUnit
+{
+	WorldCoords ModelToWorld(const ModelCoords& coords);
+	ViewCoords WorldToView(const WorldCoords& coords);
+	ClipCoords ViewToClip(const ViewCoords& coords);
+	ScreenCoords ClipToScreen(const ClipCoords& coords);
+	DrawingCoords ScreenToDrawing(const ScreenCoords& coords);
+};