Pica: Add basic rasterizer.

src/video_core/CMakeLists.txt

@@ -1,6 +1,7 @@
 set(SRCS    clipper.cpp
             command_processor.cpp
             primitive_assembly.cpp
+            rasterizer.cpp
             utils.cpp
             vertex_shader.cpp
             video_core.cpp
@@ -10,6 +11,7 @@ set(HEADERS clipper.h
             command_processor.h
             math.h
             primitive_assembly.h
+            rasterizer.h
             utils.h
             video_core.h
             renderer_base.h