baselayer: add DEBUG_FRAME_LOCKING functionality.

git-svn-id: https://svn.eduke32.com/eduke32@5311 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/build/include/baselayer.h

@@ -199,9 +199,26 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs);
 void getvalidmodes(void);
 void resetvideomode(void);
 
-void begindrawing(void);
+//#define DEBUG_FRAME_LOCKING
+
 void enddrawing(void);
 void showframe(int32_t);
+#if !defined DEBUG_FRAME_LOCKING
+void begindrawing(void);
+#else
+void begindrawing_real(void);
+# define BEGINDRAWING_SIZE 256
+extern uint32_t begindrawing_line[BEGINDRAWING_SIZE];
+extern const char *begindrawing_file[BEGINDRAWING_SIZE];
+extern int32_t lockcount;
+# define begindrawing() do {                     \
+    if (lockcount < BEGINDRAWING_SIZE) {         \
+        begindrawing_line[lockcount] = __LINE__; \
+        begindrawing_file[lockcount] = __FILE__; \
+    }                                            \
+    begindrawing_real();                         \
+} while(0)
+#endif
 
 int32_t setpalette(int32_t start, int32_t num);
 //int32_t getpalette(int32_t start, int32_t num, char *dapal);

polymer/eduke32/build/src/sdlayer.c

@@ -1583,11 +1583,17 @@ void resetvideomode(void)
     modeschecked = 0;
 }
 
-
 //
 // begindrawing() -- locks the framebuffer for drawing
 //
+
+#ifdef DEBUG_FRAME_LOCKING
+uint32_t begindrawing_line[BEGINDRAWING_SIZE];
+const char *begindrawing_file[BEGINDRAWING_SIZE];
+void begindrawing_real(void)
+#else
 void begindrawing(void)
+#endif
 {
     if (bpp > 8)
     {

polymer/eduke32/build/src/winlayer.c

@@ -1905,7 +1905,13 @@ void resetvideomode(void)
 //
 // begindrawing() -- locks the framebuffer for drawing
 //
+#ifdef DEBUG_FRAME_LOCKING
+uint32_t begindrawing_line[BEGINDRAWING_SIZE];
+const char *begindrawing_file[BEGINDRAWING_SIZE];
+void begindrawing_real(void)
+#else
 void begindrawing(void)
+#endif
 {
     if (bpp > 8)
     {