Split the rendering API out into a separate header file.

Makefile.in

@@ -69,6 +69,7 @@ HDRS = \
 	SDL_power.h \
 	SDL_quit.h \
 	SDL_rect.h \
+	SDL_render.h \
 	SDL_revision.h \
 	SDL_rwops.h \
 	SDL_scancode.h \

include/SDL.h

@@ -86,6 +86,7 @@
 #include "SDL_loadso.h"
 #include "SDL_mutex.h"
 #include "SDL_power.h"
+#include "SDL_render.h"
 #include "SDL_rwops.h"
 #include "SDL_thread.h"
 #include "SDL_timer.h"

include/SDL_compat.h

@@ -328,7 +328,6 @@ extern DECLSPEC int SDLCALL SDL_EnableKeyRepeat(int delay, int interval);
 extern DECLSPEC void SDLCALL SDL_GetKeyRepeat(int *delay, int *interval);
 extern DECLSPEC int SDLCALL SDL_EnableUNICODE(int enable);
 
-typedef SDL_Texture* SDL_TextureID;
 typedef SDL_Window* SDL_WindowID;
 
 #define SDL_RenderPoint SDL_RenderDrawPoint

src/video/SDL_sysvideo.h

@@ -26,6 +26,7 @@
 
 #include "SDL_mouse.h"
 #include "SDL_keysym.h"
+#include "SDL_render.h"
 #include "SDL_shape.h"
 
 /* The SDL video driver */