Initial commit from steward-fu releasemain

5 files changed, 2916 insertions, 0 deletions

diff --git a/modules/libdraw/Makefile b/modules/libdraw/Makefile
new file mode 100644
index 0000000..8e26c38
--- /dev/null
+++ b/modules/libdraw/Makefile
@@ -0,0 +1,609 @@
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new file mode 100644
index 0000000..07276b5
--- /dev/null
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+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
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+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/libdraw_la-libdraw.Tpo $(DEPDIR)/libdraw_la-libdraw.Plo
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+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
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+	  done | \
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+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	set x; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
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+	shift; \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
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+	  && gtags -i $(GTAGS_ARGS) "$$here"
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+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
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+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
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+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
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+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+all-am: Makefile $(LTLIBRARIES)
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+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
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+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/modules/libdraw/libdraw.c b/modules/libdraw/libdraw.c
new file mode 100644
index 0000000..9884ec9
--- /dev/null
+++ b/modules/libdraw/libdraw.c
@@ -0,0 +1,1633 @@
+/*
+ *  Copyright © 2006-2016 SplinterGU (Fenix/Bennugd)
+ *  Copyright © 2002-2006 Fenix Team (Fenix)
+ *  Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix)
+ *
+ *  This file is part of Bennu - Game Development
+ *
+ *  This software is provided 'as-is', without any express or implied
+ *  warranty. In no event will the authors be held liable for any damages
+ *  arising from the use of this software.
+ *
+ *  Permission is granted to anyone to use this software for any purpose,
+ *  including commercial applications, and to alter it and redistribute it
+ *  freely, subject to the following restrictions:
+ *
+ *     1. The origin of this software must not be misrepresented; you must not
+ *     claim that you wrote the original software. If you use this software
+ *     in a product, an acknowledgment in the product documentation would be
+ *     appreciated but is not required.
+ *
+ *     2. Altered source versions must be plainly marked as such, and must not be
+ *     misrepresented as being the original software.
+ *
+ *     3. This notice may not be removed or altered from any source
+ *     distribution.
+ *
+ */
+
+/* --------------------------------------------------------------------------- */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "bgdrtm.h"
+
+#include "bgddl.h"
+#include "libblit.h"
+#include "libdraw.h"
+#include "fmath.h"
+
+/* --------------------------------------------------------------------------- */
+
+uint32_t drawing_stipple = 0xFFFFFFFF;
+
+/* --------------------------------------------------------------------------- */
+
+#ifdef __GNUC__
+#define _inline inline
+#endif
+
+_inline void _HLine8_nostipple( uint8_t * ptr, uint32_t length )
+{
+    if ( pixel_alpha == 255 )
+    {
+        memset( ptr, pixel_color8, length + 1 ) ;
+    }
+    else
+    {
+        register int n;
+        for ( n = length; n >= 0; n--, ptr++ )
+            *ptr = pixel_alpha8[( pixel_color8 << 8 ) + *ptr ];
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+
+_inline void _HLine8_stipple( uint8_t * ptr, uint32_t length )
+{
+    register int n;
+
+    if ( pixel_alpha == 255 )
+    {
+        for ( n = length; n >= 0; n--, ptr++ )
+        {
+            if ( drawing_stipple & 1 ) * ptr = pixel_color8;
+            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+        }
+    }
+    else
+    {
+        for ( n = length; n >= 0; n--, ptr++ )
+        {
+            if ( drawing_stipple & 1 ) * ptr = pixel_alpha8[( pixel_color8 << 8 ) + *ptr ];
+            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+        }
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+
+_inline void _HLine16_nostipple( uint16_t * ptr, uint32_t length )
+{
+    register int n ;
+
+    if ( pixel_alpha == 255 )
+    {
+        for ( n = length; n >= 0; n-- ) *ptr++ = pixel_color16 ;
+    }
+    else
+    {
+        for ( n = length; n >= 0; n--, ptr++ ) *ptr = pixel_alpha16[ *ptr ] + pixel_color16_alpha ;
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+
+_inline void _HLine16_stipple( uint16_t * ptr, uint32_t length )
+{
+    register int n ;
+
+    if ( pixel_alpha == 255 )
+    {
+        for ( n = length; n >= 0; n--, ptr++ )
+        {
+            if ( drawing_stipple & 1 ) * ptr = pixel_color16 ;
+            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+        }
+    }
+    else
+    {
+        for ( n = length; n >= 0; n--, ptr++ )
+        {
+            if ( drawing_stipple & 1 ) * ptr = pixel_alpha16[ *ptr ] + pixel_color16_alpha ;
+            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+        }
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+
+_inline void _HLine32_nostipple( uint32_t * ptr, uint32_t length )
+{
+    register int n ;
+
+    if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+    {
+        for ( n = length; n >= 0; n-- ) *ptr++ = pixel_color32 ;
+    }
+    else
+    {
+        unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+        unsigned int _c1, _c2, _c3 ;
+        unsigned int r, g, b ;
+
+        _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+        _f2 = 255 - _f ;
+
+        if ( _f != 0x000000ff )
+        {
+            _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+            _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+            _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+            _f <<= 24 ;
+
+            for ( n = length; n >= 0; n-- )
+            {
+                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                *ptr++ = _f | r | g | b ;
+            }
+        }
+        else
+        {
+            _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+            _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+            _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+            for ( n = length; n >= 0; n-- )
+            {
+                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                *ptr++ = 0xff000000 | r | g | b ;
+            }
+        }
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+
+_inline void _HLine32_stipple( uint32_t * ptr, uint32_t length )
+{
+    register int n ;
+
+    if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+    {
+        for ( n = length; n >= 0; n-- )
+        {
+            if ( drawing_stipple & 1 ) *ptr = pixel_color32 ;
+            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+        }
+    }
+    else
+    {
+        unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+        unsigned int _c1, _c2, _c3 ;
+        unsigned int r, g, b ;
+
+        _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+        _f2 = 255 - _f ;
+
+        if ( _f != 0x000000ff )
+        {
+            _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+            _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+            _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+            _f <<= 24 ;
+
+            for ( n = length; n >= 0; n-- )
+            {
+                if ( drawing_stipple & 1 )
+                {
+                    r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                    g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                    b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                    if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                    if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                    if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                    *ptr++ = _f | r | g | b ;
+                }
+                drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+            }
+        }
+        else
+        {
+            _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+            _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+            _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+            for ( n = length; n >= 0; n-- )
+            {
+                if ( drawing_stipple & 1 )
+                {
+                    r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                    g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                    b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                    if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                    if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                    if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                    *ptr++ = 0xff000000 | r | g | b ;
+                }
+                drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+            }
+        }
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_vline
+ *
+ *  Draw a vertical line
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the top-left pixel
+ *      h               Height in pixels
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_vline( GRAPH * dest, REGION * clip, int x, int y, int h )
+{
+    REGION base_clip ;
+    int old_stipple = drawing_stipple;
+
+    if ( !dest ) dest = scrbitmap ;
+    if ( !clip )
+    {
+        clip = &base_clip ;
+        clip->x = 0 ;
+        clip->y = 0 ;
+        clip->x2 = dest->width - 1 ;
+        clip->y2 = dest->height - 1 ;
+    }
+    else
+    {
+        base_clip = *clip ;
+        clip = &base_clip ;
+        clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ;
+        clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ;
+        clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ;
+        clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ;
+    }
+
+    dest->modified = 2 ;
+    dest->info_flags &= ~GI_CLEAN;
+
+    if ( h < 0 ) h = -h, y -= ( h /*- 1*/ ) ;
+
+    if ( x < clip->x || x > clip->x2 ) return ;
+
+    if ( y < clip->y ) h += y - clip->y, y = clip->y;
+    if ( y + h > clip->y2 ) h = clip->y2 - y /*+ 1*/ ;
+
+    switch ( dest->format->depth )
+    {
+        case 1:
+        {
+            uint8_t * ptr = dest->data;
+            int mask ;
+            ptr += dest->pitch * y + ( x >> 3 ) ;
+            mask = ( 1 << ( 7 - ( x & 7 ) ) );
+            if ( drawing_stipple != 0xFFFFFFFF )
+            {
+                while ( h-- >= 0 )
+                {
+                    if ( drawing_stipple & 1 )
+                    {
+                        if ( !pixel_color8 )
+                            * ptr &= ~mask;
+                        else
+                            *ptr |= mask;
+                    }
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += dest->pitch ;
+                }
+            }
+            else
+            {
+                while ( h-- >= 0 )
+                {
+                    if ( !pixel_color8 )
+                        * ptr &= ~mask;
+                    else
+                        *ptr |= mask;
+                    ptr += dest->pitch ;
+                }
+            }
+        }
+
+        case 8:
+        {
+            uint8_t * ptr = dest->data ;
+            ptr += dest->pitch * y + x ;
+            if ( drawing_stipple != 0xFFFFFFFF )
+            {
+                while ( h-- >= 0 )
+                {
+                    if ( drawing_stipple & 1 ) _Pixel8( ptr, pixel_color8 ) ;
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += dest->pitch ;
+                }
+            }
+            else
+            {
+                while ( h-- >= 0 )
+                {
+                    _Pixel8( ptr, pixel_color8 ) ;
+                    ptr += dest->pitch ;
+                }
+            }
+        }
+        break;
+
+        case 16:
+        {
+            uint16_t * ptr = dest->data ;
+            int inc = dest->pitch >> 1 ;
+            ptr += inc * y + x ;
+            if ( drawing_stipple != 0xFFFFFFFF )
+            {
+                while ( h-- >= 0 )
+                {
+                    if ( drawing_stipple & 1 ) _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ;
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += inc ;
+                }
+            }
+            else
+            {
+                while ( h-- >= 0 )
+                {
+                    _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ;
+                    ptr += inc ;
+                }
+            }
+        }
+        break;
+
+        case 32:
+        {
+            uint32_t * ptr = dest->data ;
+            int inc = dest->pitch >> 2 ;
+            ptr += inc * y + x ;
+            if ( drawing_stipple != 0xFFFFFFFF )
+            {
+                if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+                {
+                    while ( h-- >= 0 )
+                    {
+                        if ( drawing_stipple & 1 ) * ptr = pixel_color32 ;
+                        drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                        ptr += inc ;
+                    }
+                }
+                else
+                {
+                    unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+                    unsigned int _c1, _c2, _c3 ;
+                    unsigned int r, g, b ;
+
+                    _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+                    _f2 = 255 - _f ;
+
+                    if ( _f != 0x000000ff )
+                    {
+                        _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+                        _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+                        _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+                        _f <<= 24 ;
+
+                        while ( h-- >= 0 )
+                        {
+                            if ( drawing_stipple & 1 )
+                            {
+                                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                *ptr = _f | r | g | b ;
+                            }
+                            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                            ptr += inc;
+                        }
+                    }
+                    else
+                    {
+                        _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+                        _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+                        _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+                        while ( h-- >= 0 )
+                        {
+                            if ( drawing_stipple & 1 )
+                            {
+                                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                *ptr = 0xff000000 | r | g | b ;
+                            }
+                            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                            ptr += inc;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+                {
+                    while ( h-- >= 0 )
+                    {
+                        * ptr = pixel_color32 ;
+                        ptr += inc ;
+                    }
+                }
+                else
+                {
+                    unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+                    unsigned int _c1, _c2, _c3 ;
+                    unsigned int r, g, b ;
+
+                    _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+                    _f2 = 255 - _f ;
+
+                    if ( _f != 0x000000ff )
+                    {
+                        _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+                        _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+                        _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+                        _f <<= 24 ;
+
+                        while ( h-- >= 0 )
+                        {
+                            r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                            g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                            b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                            if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                            if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                            if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                            *ptr = _f | r | g | b ;
+                            ptr += inc;
+                        }
+                    }
+                    else
+                    {
+                        _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+                        _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+                        _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+                        while ( h-- >= 0 )
+                        {
+                            r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                            g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                            b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                            if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                            if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                            if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                            *ptr = 0xff000000 | r | g | b ;
+                            ptr += inc;
+                        }
+                    }
+                }
+            }
+        }
+        break;
+    }
+
+    drawing_stipple = old_stipple;
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : gr_gline
+ *
+ *  Draw an horizontal line
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the top-left pixel
+ *      w               Width in pixels
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_hline( GRAPH * dest, REGION * clip, int x, int y, int w )
+{
+    REGION base_clip ;
+    int old_stipple = drawing_stipple;
+
+    if ( !dest ) dest = scrbitmap ;
+    if ( !clip )
+    {
+        clip = &base_clip ;
+        clip->x = 0 ;
+        clip->y = 0 ;
+        clip->x2 = dest->width - 1 ;
+        clip->y2 = dest->height - 1 ;
+    }
+    else
+    {
+        base_clip = *clip ;
+        clip = &base_clip ;
+        clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ;
+        clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ;
+        clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ;
+        clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ;
+    }
+
+    dest->modified = 2 ;
+    dest->info_flags &= ~GI_CLEAN;
+
+    if ( w < 0 ) w = -w, x -= ( w /*- 1*/ ) ;
+
+    if ( y < clip->y || y > clip->y2 ) return ;
+
+    if ( x < clip->x ) w += x - clip->x, x = clip->x ;
+    if ( x + w > clip->x2 ) w = clip->x2 - x /* + 1*/ ;
+
+    switch ( dest->format->depth )
+    {
+        case 1:
+        {
+            uint8_t * ptr = dest->data;
+            int mask ;
+            ptr += dest->pitch * y + ( x >> 3 );
+            mask = ( 1 << ( 7 - ( x & 7 ) ) );
+
+            if ( drawing_stipple != 0xFFFFFFFF )
+            {
+                while ( w-- > 0 )
+                {
+                    if ( drawing_stipple & 1 )
+                    {
+                        if ( !pixel_color8 )
+                            * ptr &= ~mask;
+                        else
+                            *ptr |= mask;
+                    }
+                    mask >>= 1;
+                    if ( !mask )
+                    {
+                        mask = 0x80;
+                        ptr++;
+                    }
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                }
+            }
+            else
+            {
+                while ( w-- > 0 )
+                {
+                    if ( !pixel_color8 )
+                        * ptr &= ~mask;
+                    else
+                        *ptr |= mask;
+                    mask >>= 1;
+                    if ( !mask )
+                    {
+                        mask = 0x80;
+                        ptr++;
+                    }
+                }
+            }
+        }
+        break;
+
+        case    8:
+        {
+            uint8_t * ptr = dest->data ;
+            ptr += dest->pitch * y + x ;
+            if ( drawing_stipple == 0xFFFFFFFF )
+                _HLine8_nostipple( ptr, w ) ;
+            else
+                _HLine8_stipple( ptr, w ) ;
+        }
+        break;
+
+        case 16:
+        {
+            uint16_t * ptr = dest->data ;
+            ptr += ( dest->pitch >> 1 ) * y + x ;
+            if ( drawing_stipple == 0xFFFFFFFF )
+                _HLine16_nostipple( ptr, w ) ;
+            else
+                _HLine16_stipple( ptr, w ) ;
+        }
+        break;
+
+        case 32:
+        {
+            uint32_t * ptr = dest->data ;
+            ptr += ( dest->pitch >> 2 ) * y + x ;
+            if ( drawing_stipple == 0xFFFFFFFF )
+                _HLine32_nostipple( ptr, w ) ;
+            else
+                _HLine32_stipple( ptr, w ) ;
+        }
+        break;
+    }
+
+    drawing_stipple = old_stipple;
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_box
+ *
+ *  Draw a filled rectangle
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the top-left pixel
+ *      w               Width in pixels
+ *      h               Height in pixels
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_box( GRAPH * dest, REGION * clip, int x, int y, int w, int h )
+{
+    REGION base_clip ;
+
+    if ( !dest ) dest = scrbitmap ;
+    if ( !clip )
+    {
+        clip = &base_clip ;
+        clip->x = 0 ;
+        clip->y = 0 ;
+        clip->x2 = dest->width - 1 ;
+        clip->y2 = dest->height - 1 ;
+    }
+    else
+    {
+        base_clip = *clip ;
+        clip = &base_clip ;
+        clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ;
+        clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ;
+        clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ;
+        clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ;
+    }
+
+    dest->modified = 2 ;
+    dest->info_flags &= ~GI_CLEAN;
+
+    if ( w < 0 ) w = -w, x -= ( w /*- 1*/ ) ;
+    if ( h < 0 ) h = -h, y -= ( h /*- 1*/ ) ;
+
+    if ( x < clip->x ) w += x - clip->x, x = clip->x ;
+    if ( y < clip->y ) h += y - clip->y, y = clip->y ;
+
+    if ( x + w > clip->x2 ) w = clip->x2 - ( x /*+ 1*/ ) ;
+    if ( y + h > clip->y2 ) h = clip->y2 - ( y /*+ 1*/ ) ;
+
+    if ( w < 0 || h < 0 ) return ;
+
+    switch ( dest->format->depth )
+    {
+        case 1:
+        {
+            int old_stipple = drawing_stipple;
+            drawing_stipple = 0xFFFFFFFF;
+
+            while ( h-- >= 0 ) draw_hline( dest, clip, x, y + h, w );
+
+            drawing_stipple = old_stipple;
+        }
+        break;
+
+        case 8:
+        {
+            uint8_t * ptr = dest->data ;
+            ptr += dest->pitch * y + x ;
+            while ( h-- >= 0 )
+            {
+                _HLine8_nostipple( ptr, w ) ;
+                ptr += dest->pitch ;
+            }
+        }
+        break;
+
+        case 16:
+        {
+            uint16_t * ptr = dest->data ;
+            int inc = dest->pitch >> 1 ;
+            ptr += inc * y + x ;
+            while ( h-- >= 0 )
+            {
+                _HLine16_nostipple( ptr, w ) ;
+                ptr += inc ;
+            }
+        }
+        break;
+
+        case 32:
+        {
+            uint32_t * ptr = dest->data ;
+            int inc = dest->pitch >> 2 ;
+            ptr += inc * y + x ;
+            while ( h-- >= 0 )
+            {
+                _HLine32_nostipple( ptr, w ) ;
+                ptr += inc ;
+            }
+        }
+        break;
+    }
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_rectangle
+ *
+ *  Draw a rectangle (non-filled)
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the top-left pixel
+ *      w               Width in pixels
+ *      h               Height in pixels
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_rectangle( GRAPH * dest, REGION * clip, int x, int y, int w, int h )
+{
+    int stipple = drawing_stipple ;
+    int iw, ih;
+
+    iw = SGN( w );
+    ih = SGN( h );
+
+    draw_hline( dest, clip, x, y, w - iw );
+    if ( h ) draw_vline( dest, clip, x + w, y, h - ih );
+    if ( w && h ) draw_hline( dest, clip, x + w, y + h, -( w - iw ) );
+    if ( h && w ) draw_vline( dest, clip, x, y + h, -( h - ih ) );
+
+    drawing_stipple = stipple ;
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_circle
+ *
+ *  Draw a circle
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the center
+ *      r               Radius, in pixels
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_circle( GRAPH * dest, REGION * clip, int x, int y, int r )
+{
+    int cx = 0, cy = r;
+    int lcy = -1;
+    int df = 1 - r, de = 3, dse = -2 * r + 5;
+    int old_stipple = drawing_stipple;
+    REGION base_clip ;
+    int color = 0;
+
+    if ( !dest ) dest = scrbitmap ;
+    if ( !clip )
+    {
+        clip = &base_clip ;
+        clip->x = 0 ;
+        clip->y = 0 ;
+        clip->x2 = dest->width - 1 ;
+        clip->y2 = dest->height - 1 ;
+    }
+    else
+    {
+        base_clip = *clip ;
+        clip = &base_clip ;
+        clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ;
+        clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ;
+        clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ;
+        clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ;
+    }
+
+    dest->modified = 2 ;
+    dest->info_flags &= ~GI_CLEAN;
+
+    if ( dest->format->depth == 8 || dest->format->depth == 1 )
+    {
+        color = pixel_color8;
+    }
+    else if ( dest->format->depth == 16 )
+    {
+        color = pixel_color16;
+    }
+    else if ( dest->format->depth == 32 )
+    {
+        color = pixel_color32;
+    }
+
+    do
+    {
+        if ( drawing_stipple & 1 )
+        {
+            gr_put_pixelc( dest, clip, x - cx, y - cy, color ) ;
+            if ( cx ) gr_put_pixelc( dest, clip, x + cx, y - cy, color ) ;
+
+            if ( cy )
+            {
+                gr_put_pixelc( dest, clip, x - cx, y + cy, color ) ;
+                if ( cx ) gr_put_pixelc( dest, clip, x + cx, y + cy, color ) ;
+            }
+
+            if ( cx != cy )
+            {
+                gr_put_pixelc( dest, clip, x - cy, y - cx, color ) ;
+                if ( cy ) gr_put_pixelc( dest, clip, x + cy, y - cx, color ) ;
+            }
+
+            if ( cx && cy != cx )
+            {
+                gr_put_pixelc( dest, clip, x - cy, y + cx, color ) ;
+                if ( cy ) gr_put_pixelc( dest, clip, x + cy, y + cx, color ) ;
+            }
+        }
+        drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+
+        lcy = cy;
+        cx++ ;
+        if ( df < 0 ) df += de, de += 2, dse += 2 ;
+        else df += dse, de += 2, dse += 4, cy-- ;
+    }
+    while ( cx <= cy ) ;
+
+    drawing_stipple = old_stipple;
+
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_fcircle
+ *
+ *  Draw a filled circle
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the center
+ *      r               Radius, in pixels
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_fcircle( GRAPH * dest, REGION * clip, int x, int y, int r )
+{
+    int cx = 0, cy = r;
+    int df = 1 - r, de = 3, dse = -2 * r + 5;
+    int old_stipple = drawing_stipple;
+    drawing_stipple = 0xFFFFFFFF;
+
+    do
+    {
+        if ( cx != cy )
+        {
+            draw_hline( dest, clip, x - cy, y - cx, cy << 1 /*+1*/ ) ;
+            if ( cx ) draw_hline( dest, clip, x - cy, y + cx, cy << 1 /*+1*/ ) ;
+        }
+        if ( df < 0 )
+        {
+            df += de, de += 2, dse += 2 ;
+        }
+        else
+        {
+            df += dse, de += 2, dse += 4;
+            draw_hline( dest, clip, x - cx, y - cy, cx << 1 /*+1*/ ) ;
+            if ( cy ) draw_hline( dest, clip, x - cx, y + cy, cx << 1 /*+1*/ ) ;
+            cy-- ;
+        }
+        cx++ ;
+    }
+    while ( cx <= cy ) ;
+
+    drawing_stipple = old_stipple;
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_line
+ *
+ *  Draw a line
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      x, y            Coordinates of the first point
+ *      w, h            Distance to the second point
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_line( GRAPH * dest, REGION * clip, int x, int y, int w, int h )
+{
+    int n, m, hinc, vinc ;
+    REGION base_clip ;
+    int old_stipple = drawing_stipple;
+    int i1, i2, dd ;
+    int w1, h1;
+
+    if ( !w )
+    {
+        draw_vline( dest, clip, x, y, h ) ;
+        return ;
+    }
+
+    if ( !h )
+    {
+        draw_hline( dest, clip, x, y, w ) ;
+        return ;
+    }
+
+    if ( !dest ) dest = scrbitmap ;
+    if ( !clip )
+    {
+        clip = &base_clip ;
+        clip->x = 0 ;
+        clip->y = 0 ;
+        clip->x2 = dest->width - 1 ;
+        clip->y2 = dest->height - 1 ;
+    }
+    else
+    {
+        base_clip = *clip ;
+        clip = &base_clip ;
+        clip->x = MAX( MIN( clip->x, clip->x2 ), 0 ) ;
+        clip->y = MAX( MIN( clip->y, clip->y2 ), 0 ) ;
+        clip->x2 = MIN( MAX( clip->x, clip->x2 ), dest->width - 1 ) ;
+        clip->y2 = MIN( MAX( clip->y, clip->y2 ), dest->height - 1 ) ;
+    }
+
+    dest->modified = 2 ;
+    dest->info_flags &= ~GI_CLEAN;
+
+    w1 = ABS( w );
+    h1 = ABS( h );
+
+    /* Clipping de la línea - INCORRECTO pero funcional */
+
+    /* TODO: SE NECESITA CORREGIR CLIPPING EN LINE */
+
+    if ( x < clip->x )
+    { /* izquierda */
+        if (( x + w ) < clip->x ) return ;
+        n = clip->x - x;
+        m = w ? ( n * h ) / ABS( w ) : 0;
+        x += n, w -= n, y += m, h -= m ;    // if (w == 0) return ;
+    }
+    if (( x + w ) < clip->x )
+    { /* w < 0 */
+        n = clip->x - ( x + w );
+        m = w ? ( n * h ) / ABS( w ) : 0;
+        w += n, h -= m ; // if (w == 0) return ;
+    }
+    if ( y < clip->y )
+    { /* arriba */
+        if (( y + h ) < clip->y ) return ;
+        m = clip->y - y;
+        n = h ? ( m * w ) / ABS( h ) : 0;
+        x += n, w -= n, y += m, h -= m ; // if (h == 0) return ;
+    }
+    if (( y + h ) < clip->y )
+    { /* h < 0 */
+        m = clip->y - ( y + h );
+        n = h ? ( m * w ) / ABS( h ) : 0;
+        w -= n, h += m ; // if (h == 0) return ;
+    }
+    if ( x > clip->x2 )
+    { /* derecha */
+        if (( x + w ) > clip->x2 ) return ;
+        n = x - clip->x2;
+        m = w ? ( n * h ) / ABS( w ) : 0;
+        x -= n, w += n, y += m, h -= m ; // if (w == 0) return ;
+    }
+    if (( x + w ) > clip->x2 )
+    { /* w > 0 */
+        n = ( x + w ) - clip->x2;
+        m = w ? ( n * h ) / ABS( w ) : 0;
+        w -= n, h -= m ; // if (w == 0) return ;
+    }
+    if ( y > clip->y2 )
+    { /* abajo */
+        if (( y + h ) > clip->y2 ) return ;
+        m = y - clip->y2;
+        n = h ? ( m * w ) / ABS( h ) : 0;
+        x += n, w -= n, y -= m, h += m ; // if (h == 0) return ;
+    }
+    if (( y + h ) > clip->y2 )
+    { /* h > 0 */
+        m = ( y + h ) - clip->y2;
+        n = h ? ( m * w ) / ABS( h ) : 0;
+        w -= n, h -= m ; // if (h == 0) return ;
+    }
+
+    hinc = ( w > 0 ) ? 1 : -1 ;
+    vinc = ( h > 0 ) ? dest->pitch : -( int ) dest->pitch ;
+
+    if ( dest->format->depth > 8 ) vinc /= dest->format->depthb;
+
+    /* Aquí va una implementación deprisa y corriendo de Bresenham */
+
+    w = ABS( w );
+    h = ABS( h );
+
+    if ( w > h )
+    {
+        i1 = 2 * h1;
+        dd = i1 - w1;
+        i2 = dd - w1;
+        dd -= w1 - w;
+    }
+    else
+    {
+        i1 = 2 * w1;
+        dd = i1 - h1;
+        i2 = dd - h1;
+        dd -= h1 - h;
+    }
+
+    switch ( dest->format->depth )
+    {
+        case 1:
+        {
+            uint8_t * ptr = dest->data + dest->pitch * y + ( x >> 3 ) ;
+            uint8_t mask, rmask ;
+            mask = ( 1 << ( 7 - ( x & 7 ) ) );
+
+            if ( hinc < 0 ) rmask = 0x01 ;
+            else rmask = 0x80 ;
+
+            if ( w > h ) while ( w-- > 0 )
+                {
+                    if ( drawing_stipple & 1 )
+                    {
+                        if ( !pixel_color8 )
+                        {
+                            * ptr &= ~mask;
+                        }
+                        else
+                        {
+                            *ptr |= mask;
+                        }
+                    }
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    /* Vertical */
+                    if ( dd >= 0 )
+                    {
+                        ptr += vinc, dd += i2 ;
+                    }
+                    else
+                    {
+                        dd += i1 ;
+                    }
+                    /* Horizontal */
+                    if ( hinc < 0 )
+                    {
+                        mask <<= 1;
+                    }
+                    else
+                    {
+                        mask >>= 1;
+                    }
+                    if ( !mask ) mask = rmask, ptr += hinc ;
+                }
+            else while ( h-- >= 0 )
+                {
+                    if ( drawing_stipple & 1 )
+                    {
+                        if ( !pixel_color8 )
+                        {
+                            * ptr &= ~mask ;
+                        }
+                        else
+                        {
+                            *ptr |= mask;
+                        }
+                    }
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    /* Vertical */
+                    ptr += vinc;
+                    if ( dd >= 0 )
+                    {
+                        dd += i2 ;
+                        /* Horizontal */
+                        if ( hinc < 0 )
+                        {
+                            mask <<= 1;
+                        }
+                        else
+                        {
+                            mask >>= 1;
+                        }
+                        if ( !mask ) mask = rmask, ptr += hinc ;
+                    }
+                    else
+                        dd += i1 ;
+                }
+        }
+        break;
+
+        case 8:
+        {
+            uint8_t * ptr = ( uint8_t * ) dest->data + dest->pitch * y + x;
+
+            if ( w > h ) while ( w-- > 0 )
+                {
+                    if ( drawing_stipple & 1 ) _Pixel8( ptr, pixel_color8 ) ;
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += hinc;
+                    if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                    else dd += i1 ;
+                }
+            else while ( h-- >= 0 )
+                {
+                    if ( drawing_stipple & 1 ) _Pixel8( ptr, pixel_color8 ) ;
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += vinc;
+                    if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                    else dd += i1 ;
+                }
+        }
+        break;
+        case 16:
+        {
+            uint16_t * ptr = ( uint16_t * ) dest->data + ( dest->pitch >> 1 ) * y + x;
+
+            if ( w > h ) while ( w-- > 0 )
+                {
+                    if ( drawing_stipple & 1 ) _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ;
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += hinc;
+                    if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                    else dd += i1 ;
+                }
+            else while ( h-- >= 0 )
+                {
+                    if ( drawing_stipple & 1 ) _Pixel16( ptr, pixel_color16, pixel_color16_alpha ) ;
+                    drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                    ptr += vinc;
+                    if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                    else dd += i1 ;
+                }
+        }
+        break;
+        case 32:
+        {
+            uint32_t * ptr = ( uint32_t * ) dest->data + ( dest->pitch >> 2 ) * y + x;
+
+            if ( drawing_stipple == 0xffffffff )
+            {
+                if ( w > h )
+                {
+                    if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+                    {
+                        while ( w-- > 0 )
+                        {
+                            *ptr = pixel_color32 ;
+                            ptr += hinc;
+                            if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                            else dd += i1 ;
+                        }
+                    }
+                    else
+                    {
+                        unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+                        unsigned int _c1, _c2, _c3 ;
+                        unsigned int r, g, b ;
+
+                        _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+                        _f2 = 255 - _f ;
+
+                        if ( _f != 0x000000ff )
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+                            _f <<= 24 ;
+
+                            while ( w-- > 0 )
+                            {
+                                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                *ptr = _f | r | g | b ;
+                                ptr += hinc;
+                                if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                        else
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+                            while ( w-- > 0 )
+                            {
+                                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                *ptr = 0xff000000 | r | g | b ;
+                                ptr += hinc;
+                                if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+                    {
+                        while ( h-- >= 0 )
+                        {
+                            *ptr = pixel_color32 ;
+                            ptr += vinc;
+                            if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                            else dd += i1 ;
+                        }
+                    }
+                    else
+                    {
+                        unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+                        unsigned int _c1, _c2, _c3 ;
+                        unsigned int r, g, b ;
+
+                        _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+                        _f2 = 255 - _f ;
+
+                        if ( _f != 0x000000ff )
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+                            _f <<= 24 ;
+
+                            while ( h-- >= 0 )
+                            {
+                                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                *ptr = _f | r | g | b ;
+                                ptr += vinc;
+                                if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                        else
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+                            while ( h-- >= 0 )
+                            {
+                                r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                *ptr = 0xff000000 | r | g | b ;
+                                ptr += vinc;
+                                if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                    }
+                }
+            }
+            else
+            {
+                if ( w > h )
+                {
+                    if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+                    {
+                        while ( w-- > 0 )
+                        {
+                            if ( drawing_stipple & 1 ) *ptr = pixel_color32 ;
+                            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                            ptr += hinc;
+                            if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                            else dd += i1 ;
+                        }
+                    }
+                    else
+                    {
+                        unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+                        unsigned int _c1, _c2, _c3 ;
+                        unsigned int r, g, b ;
+
+                        _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+                        _f2 = 255 - _f ;
+
+                        if ( _f != 0x000000ff )
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+                            _f <<= 24 ;
+
+                            while ( w-- > 0 )
+                            {
+                                if ( drawing_stipple & 1 )
+                                {
+                                    r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                    g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                    b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                    if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                    if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                    if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                    *ptr = _f | r | g | b ;
+                                }
+                                drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                                ptr += hinc;
+                                if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                        else
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+                            while ( w-- > 0 )
+                            {
+                                if ( drawing_stipple & 1 )
+                                {
+                                    r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                    g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                    b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                    if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                    if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                    if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                    *ptr = 0xff000000 | r | g | b ;
+                                }
+                                drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                                ptr += hinc;
+                                if ( dd >= 0 ) ptr += vinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    if ( pixel_alpha == 255 && ( pixel_color32 & 0xff000000 ) == 0xff000000 )
+                    {
+                        while ( h-- >= 0 )
+                        {
+                            if ( drawing_stipple & 1 ) *ptr = pixel_color32 ;
+                            drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                            ptr += vinc;
+                            if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                            else dd += i1 ;
+                        }
+                    }
+                    else
+                    {
+                        unsigned int _f = pixel_color32 & 0xff000000, _f2 ;
+                        unsigned int _c1, _c2, _c3 ;
+                        unsigned int r, g, b ;
+
+                        _f = ( _f >> 24 ) * pixel_alpha / 255 ;
+                        _f2 = 255 - _f ;
+
+                        if ( _f != 0x000000ff )
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * _f ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * _f ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * _f ;
+
+                            _f <<= 24 ;
+
+                            while ( h-- >= 0 )
+                            {
+                                if ( drawing_stipple & 1 )
+                                {
+                                    r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                    g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                    b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                    if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                    if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                    if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                    *ptr = _f | r | g | b ;
+                                }
+                                drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                                ptr += vinc;
+                                if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                        else
+                        {
+                            _c1 = ( pixel_color32 & 0x00ff0000 ) * pixel_alpha ;
+                            _c2 = ( pixel_color32 & 0x0000ff00 ) * pixel_alpha ;
+                            _c3 = ( pixel_color32 & 0x000000ff ) * pixel_alpha ;
+
+                            while ( h-- >= 0 )
+                            {
+                                if ( drawing_stipple & 1 )
+                                {
+                                    r = ( _c1 + (( *ptr & 0x00ff0000 ) * _f2 ) ) >> 8 ;
+                                    g = ( _c2 + (( *ptr & 0x0000ff00 ) * _f2 ) ) >> 8 ;
+                                    b = ( _c3 + (( *ptr & 0x000000ff ) * _f2 ) ) >> 8 ;
+
+                                    if ( r > 0x00ff0000 ) r = 0x00ff0000 ; else r &= 0x00ff0000 ;
+                                    if ( g > 0x0000ff00 ) g = 0x0000ff00 ; else g &= 0x0000ff00 ;
+                                    if ( b > 0x000000ff ) b = 0x000000ff ; else b &= 0x000000ff ;
+
+                                    *ptr = 0xff000000 | r | g | b ;
+                                }
+                                drawing_stipple = (( drawing_stipple << 1 ) | (( drawing_stipple & 0x80000000 ) ? 1 : 0 ) );
+                                ptr += vinc;
+                                if ( dd >= 0 ) ptr += hinc, dd += i2 ;
+                                else dd += i1 ;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    drawing_stipple = old_stipple;
+}
+
+/* --------------------------------------------------------------------------- */
+/*
+ *  FUNCTION : draw_bezier
+ *
+ *  Draw a bezier curve
+ *
+ *  PARAMS :
+ *      dest            Destination bitmap or NULL for screen
+ *      clip            Clipping region or NULL for the whole screen
+ *      params          Pointer to an integer array with the parameters:
+ *
+ *          x1, y1
+ *          x2, y2
+ *          x3, y3
+ *          x4, y4      Curve points
+ *          level       Curve smoothness (1 to 15, 15 is more)
+ *
+ *  RETURN VALUE :
+ *      None
+ *
+ */
+
+void draw_bezier( GRAPH * dest, REGION * clip, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, int level )
+{
+    float x = ( float ) x1, y = ( float ) y1;
+    float xp = x, yp = y;
+    float delta;
+    float dx, d2x, d3x;
+    float dy, d2y, d3y;
+    float a, b, c;
+    int i;
+    int n = 1;
+
+    dest->modified = 2 ;
+    dest->info_flags &= ~GI_CLEAN;
+
+    /* Compute number of iterations */
+
+    if ( level < 1 ) level = 1;
+    if ( level >= 15 ) level = 15;
+    while ( level-- > 0 ) n *= 2;
+    delta = 1.0f / ( float ) n;
+
+    /* Compute finite differences */
+    /* a, b, c are the coefficient of the polynom in t defining the parametric curve */
+    /* The computation is done independently for x and y */
+
+    a = ( float )( -x1 + 3 * x2 - 3 * x3 + x4 );
+    b = ( float )( 3 * x1 - 6 * x2 + 3 * x3 );
+    c = ( float )( -3 * x1 + 3 * x2 );
+
+    d3x = 6 * a * delta * delta * delta;
+    d2x = d3x + 2 * b * delta * delta;
+    dx = a * delta * delta * delta + b * delta * delta + c * delta;
+
+    a = ( float )( -y1 + 3 * y2 - 3 * y3 + y4 );
+    b = ( float )( 3 * y1 - 6 * y2 + 3 * y3 );
+    c = ( float )( -3 * y1 + 3 * y2 );
+
+    d3y = 6 * a * delta * delta * delta;
+    d2y = d3y + 2 * b * delta * delta;
+    dy = a * delta * delta * delta + b * delta * delta + c * delta;
+
+    for ( i = 0; i < n; i++ )
+    {
+        x += dx;
+        dx += d2x;
+        d2x += d3x;
+        y += dy;
+        dy += d2y;
+        d2y += d3y;
+        if (( int16_t )( xp ) != ( int16_t )( x ) || ( int16_t )( yp ) != ( int16_t )( y ) )
+        {
+            draw_line( dest, clip, ( int16_t ) xp, ( int16_t ) yp, ( int16_t ) x - ( int16_t ) xp, ( int16_t ) y - ( int16_t ) yp );
+        }
+        xp = x;
+        yp = y;
+    }
+}
+
+/* --------------------------------------------------------------------------- */
diff --git a/modules/libdraw/libdraw.h b/modules/libdraw/libdraw.h
new file mode 100644
index 0000000..ca4d781
--- /dev/null
+++ b/modules/libdraw/libdraw.h
@@ -0,0 +1,51 @@
+/*
+ *  Copyright © 2006-2013 SplinterGU (Fenix/Bennugd)
+ *  Copyright © 2002-2006 Fenix Team (Fenix)
+ *  Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix)
+ *
+ *  This file is part of Bennu - Game Development
+ *
+ *  This software is provided 'as-is', without any express or implied
+ *  warranty. In no event will the authors be held liable for any damages
+ *  arising from the use of this software.
+ *
+ *  Permission is granted to anyone to use this software for any purpose,
+ *  including commercial applications, and to alter it and redistribute it
+ *  freely, subject to the following restrictions:
+ *
+ *     1. The origin of this software must not be misrepresented; you must not
+ *     claim that you wrote the original software. If you use this software
+ *     in a product, an acknowledgment in the product documentation would be
+ *     appreciated but is not required.
+ *
+ *     2. Altered source versions must be plainly marked as such, and must not be
+ *     misrepresented as being the original software.
+ *
+ *     3. This notice may not be removed or altered from any source
+ *     distribution.
+ *
+ */
+
+#ifndef __DRAW_H
+#define __DRAW_H
+
+#include "libgrbase.h"
+
+/* --------------------------------------------------------------------------- */
+
+extern uint32_t drawing_stipple;
+
+/* --------------------------------------------------------------------------- */
+
+void draw_vline( GRAPH * dest, REGION * clip, int x, int y, int h );
+void draw_hline( GRAPH * dest, REGION * clip, int x, int y, int w );
+void draw_box( GRAPH * dest, REGION * clip, int x, int y, int w, int h );
+void draw_rectangle( GRAPH * dest, REGION * clip, int x, int y, int w, int h );
+void draw_circle( GRAPH * dest, REGION * clip, int x, int y, int r );
+void draw_fcircle( GRAPH * dest, REGION * clip, int x, int y, int r );
+void draw_line( GRAPH * dest, REGION * clip, int x, int y, int w, int h );
+void draw_bezier( GRAPH * dest, REGION * clip, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, int level );
+
+/* --------------------------------------------------------------------------- */
+
+#endif