diff --git a/.gitattributes b/.gitattributes
index 51eb90e7a32..1929a0560e1 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -2691,7 +2691,7 @@ src/emu/profiler.c svneol=native#text/plain
 src/emu/profiler.h svneol=native#text/plain
 src/emu/render.c svneol=native#text/plain
 src/emu/render.h svneol=native#text/plain
-src/emu/rendersw.c svneol=native#text/plain
+src/emu/rendersw.inc svneol=native#text/plain
 src/emu/rendfont.c svneol=native#text/plain
 src/emu/rendfont.h svneol=native#text/plain
 src/emu/rendlay.c svneol=native#text/plain
diff --git a/src/emu/emu.mak b/src/emu/emu.mak
index 0cd146b2615..1207bdf2a75 100644
--- a/src/emu/emu.mak
+++ b/src/emu/emu.mak
@@ -249,7 +249,7 @@ $(LIBBUS): $(BUSOBJS)
 
 $(EMUOBJ)/rendfont.o:   $(EMUOBJ)/uismall.fh
 
-$(EMUOBJ)/video.o:  $(EMUSRC)/rendersw.c
+$(EMUOBJ)/video.o:  $(EMUSRC)/rendersw.inc
 
 #-------------------------------------------------
 # core layouts
diff --git a/src/emu/rendersw.c b/src/emu/rendersw.inc
similarity index 99%
rename from src/emu/rendersw.c
rename to src/emu/rendersw.inc
index e13b392c656..5f1d9fa21a5 100644
--- a/src/emu/rendersw.c
+++ b/src/emu/rendersw.inc
@@ -2,7 +2,7 @@
 // copyright-holders:Aaron Giles
 /***************************************************************************
 
-    rendersw.c
+    rendersw.inc
 
     Software-only rasterization system.
 
diff --git a/src/emu/video.c b/src/emu/video.c
index c9424ba6c57..3c527fdbdd3 100644
--- a/src/emu/video.c
+++ b/src/emu/video.c
@@ -16,7 +16,7 @@
 #include "ui/ui.h"
 #include "aviio.h"
 #include "crsshair.h"
-#include "rendersw.c"
+#include "rendersw.inc"
 #include "output.h"
 
 #include "snap.lh"
diff --git a/src/mess/drivers/cxhumax.c b/src/mess/drivers/cxhumax.c
index 13852bc7c2b..3ef85347c08 100644
--- a/src/mess/drivers/cxhumax.c
+++ b/src/mess/drivers/cxhumax.c
@@ -823,7 +823,7 @@ void cxhumax_state::video_start()
 {
 }
 
-/* copy from emu/rendersw.c */
+/* copy from emu/rendersw.inc */
 /*------------------------------------------------------------------------
     ycc_to_rgb - convert YCC to RGB; the YCC pixel
     contains Y in the LSB, Cb << 8, and Cr << 16
diff --git a/src/osd/sdl/drawsdl.c b/src/osd/sdl/drawsdl.c
index 8e28797142e..73cb566e11e 100644
--- a/src/osd/sdl/drawsdl.c
+++ b/src/osd/sdl/drawsdl.c
@@ -16,7 +16,7 @@
 // MAME headers
 #include "emu.h"
 #include "ui/ui.h"
-#include "rendersw.c"
+#include "rendersw.inc"
 
 // standard SDL headers
 #include "sdlinc.h"
diff --git a/src/osd/sdl/sdl.mak b/src/osd/sdl/sdl.mak
index d3d2530d4f1..9481f0267c6 100644
--- a/src/osd/sdl/sdl.mak
+++ b/src/osd/sdl/sdl.mak
@@ -771,7 +771,7 @@ $(OBJ)/emu/video/tms9927.o : CCOMFLAGS += -Wno-error
 endif # solaris
 
 # drawSDL depends on the core software renderer, so make sure it exists
-$(SDLOBJ)/drawsdl.o : $(SRC)/emu/rendersw.c $(SDLSRC)/drawogl.c
+$(SDLOBJ)/drawsdl.o : $(SRC)/emu/rendersw.inc $(SDLSRC)/drawogl.c
 $(SDLOBJ)/drawogl.o : $(SDLSRC)/texcopy.c $(SDLSRC)/texsrc.h
 
 # draw13 depends on blit13.h
diff --git a/src/osd/windows/drawdd.c b/src/osd/windows/drawdd.c
index 06fdd314b9a..d1374962bef 100644
--- a/src/osd/windows/drawdd.c
+++ b/src/osd/windows/drawdd.c
@@ -18,7 +18,7 @@
 #include "render.h"
 #include "rendutil.h"
 #include "options.h"
-#include "rendersw.c"
+#include "rendersw.inc"
 
 // MAMEOS headers
 #include "winmain.h"
diff --git a/src/osd/windows/drawgdi.c b/src/osd/windows/drawgdi.c
index 2678cebc571..7e03ccb1acc 100644
--- a/src/osd/windows/drawgdi.c
+++ b/src/osd/windows/drawgdi.c
@@ -12,7 +12,7 @@
 
 // MAME headers
 #include "emu.h"
-#include "rendersw.c"
+#include "rendersw.inc"
 
 // MAMEOS headers
 #include "window.h"
diff --git a/src/osd/windows/windows.mak b/src/osd/windows/windows.mak
index 922bb478428..c1710741f13 100644
--- a/src/osd/windows/windows.mak
+++ b/src/osd/windows/windows.mak
@@ -349,8 +349,8 @@ endif
 CCOMFLAGS += -DDIRECT3D_VERSION=0x0900
 
 # extra dependencies
-$(WINOBJ)/drawdd.o :    $(SRC)/emu/rendersw.c
-$(WINOBJ)/drawgdi.o :   $(SRC)/emu/rendersw.c
+$(WINOBJ)/drawdd.o :    $(SRC)/emu/rendersw.inc
+$(WINOBJ)/drawgdi.o :   $(SRC)/emu/rendersw.inc
 $(WINOBJ)/winmidi.o:    $(SRC)/osd/portmedia/pmmidi.c
 
 ifndef USE_QTDEBUG