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Temporarily replace drawpixels by a bounds-checked version in engine.c.

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git-svn-id: https://svn.eduke32.com/eduke32@1718 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2010-10-24 21:52:21 +00:00
parent b126f6f6c8
commit 47be9ff8ce
1 changed files with 38 additions and 17 deletions
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55
polymer/eduke32/build/src/engine.c
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@ -48,6 +48,27 @@
float debug1, debug2;
#endif
void drawpixel_safe(void* s, char a)
{
if ((intptr_t)s >= frameplace && (intptr_t)s < frameplace+bytesperline*ydim)
drawpixel(s, a);
#ifdef DEBUGGINGAIDS
else
{
static const char *const c = &editorcolors[15];
drawpixel((void*)frameplace, *c);
drawpixel((void*)frameplace+1, *c);
drawpixel((void*)frameplace+2, *c);
drawpixel((void*)frameplace+bytesperline, *c);
drawpixel((void*)frameplace+bytesperline+1, *c);
drawpixel((void*)frameplace+bytesperline+2, *c);
drawpixel((void*)frameplace+2*bytesperline, *c);
drawpixel((void*)frameplace+2*bytesperline+1, *c);
drawpixel((void*)frameplace+2*bytesperline+2, *c);
}
#endif
}
#ifdef SUPERBUILD
void loadvoxel(int32_t voxindex) { voxindex=0; }
int32_t tiletovox[MAXTILES];
@ -10178,7 +10199,7 @@ void plotpixel(int32_t x, int32_t y, char col)
#endif
begindrawing(); //{{{
drawpixel((void*)(ylookup[y]+x+frameplace),(int32_t)col);
drawpixel_safe((void*)(ylookup[y]+x+frameplace),(int32_t)col);
enddrawing(); //}}}
}
@ -10682,7 +10703,7 @@ void drawline256(int32_t x1, int32_t y1, int32_t x2, int32_t y2, char col)
{
j = (plc>>12);
if ((j >= startumost[i]) && (j < startdmost[i]))
drawpixel((void*)(frameplace+ylookup[j]+i),col);
drawpixel_safe((void*)(frameplace+ylookup[j]+i),col);
plc += inc;
}
enddrawing(); //}}}
@ -10705,7 +10726,7 @@ void drawline256(int32_t x1, int32_t y1, int32_t x2, int32_t y2, char col)
{
j = (plc>>12);
if ((i >= startumost[j]) && (i < startdmost[j]))
drawpixel((void*)(j+p),col);
drawpixel_safe((void*)(j+p),col);
plc += inc; p += ylookup[1];
}
enddrawing(); //}}}
@ -10773,7 +10794,7 @@ void drawline16(int32_t x1, int32_t y1, int32_t x2, int32_t y2, char col)
for (i=dx; i>0; i--)
{
if (drawlinepat & pow2long[(patc++)&31])
drawpixel((char *)p, col);
drawpixel_safe((char *)p, col);
d += dy;
if (d >= dx) { d -= dx; p += pinc; }
p++;
@ -10795,7 +10816,7 @@ void drawline16(int32_t x1, int32_t y1, int32_t x2, int32_t y2, char col)
for (i=dy; i>0; i--)
{
if (drawlinepat & pow2long[(patc++)&31])
drawpixel((char *)p, col);
drawpixel_safe((char *)p, col);
d += dx;
if (d >= dy) { d -= dy; p += pinc; }
p += bytesperline;
@ -10837,13 +10858,13 @@ void drawcircle16(int32_t x1, int32_t y1, int32_t r, char col)
if (drawlinepat & pow2long[(patc++)&31])
{
if ((uint32_t)y1 < (uint32_t)ydim16 && (uint32_t)(x1+r) < (uint32_t)xres)
drawpixel((char *)(p+r), col); // a
drawpixel_safe((char *)(p+r), col); // a
if ((uint32_t)x1 < (uint32_t)xres && (uint32_t)(y1+r) < (uint32_t)ydim16)
drawpixel((char *)(p+(r*bytesperline)), col); // b
drawpixel_safe((char *)(p+(r*bytesperline)), col); // b
if ((uint32_t)y1 < (uint32_t)ydim16 && (uint32_t)(x1-r) < (uint32_t)xres)
drawpixel((char *)(p-r), col); // c
drawpixel_safe((char *)(p-r), col); // c
if ((uint32_t)x1 < (uint32_t)xres && (uint32_t)(y1-r) < (uint32_t)ydim16)
drawpixel((char *)(p-(r*bytesperline)), col); // d
drawpixel_safe((char *)(p-(r*bytesperline)), col); // d
}
do
@ -10869,21 +10890,21 @@ void drawcircle16(int32_t x1, int32_t y1, int32_t r, char col)
if (drawlinepat & pow2long[(patc++)&31])
{
if ((uint32_t)(x1+yp) < (uint32_t)xres && (uint32_t)(y1+xp) < (uint32_t)ydim16)
drawpixel((char *)(p+yp+xpbpl), col); // 1
drawpixel_safe((char *)(p+yp+xpbpl), col); // 1
if ((uint32_t)(x1+xp) < (uint32_t)xres && (uint32_t)(y1+yp) < (uint32_t)ydim16)
drawpixel((char *)(p+xp+ypbpl), col); // 2
drawpixel_safe((char *)(p+xp+ypbpl), col); // 2
if ((uint32_t)(x1-xp) < (uint32_t)xres && (uint32_t)(y1+yp) < (uint32_t)ydim16)
drawpixel((char *)(p-xp+ypbpl), col); // 3
drawpixel_safe((char *)(p-xp+ypbpl), col); // 3
if ((uint32_t)(x1-yp) < (uint32_t)xres && (uint32_t)(y1+xp) < (uint32_t)ydim16)
drawpixel((char *)(p-yp+xpbpl), col); // 4
drawpixel_safe((char *)(p-yp+xpbpl), col); // 4
if ((uint32_t)(x1-yp) < (uint32_t)xres && (uint32_t)(y1-xp) < (uint32_t)ydim16)
drawpixel((char *)(p-yp-xpbpl), col); // 5
drawpixel_safe((char *)(p-yp-xpbpl), col); // 5
if ((uint32_t)(x1-xp) < (uint32_t)xres && (uint32_t)(y1-yp) < (uint32_t)ydim16)
drawpixel((char *)(p-xp-ypbpl), col); // 6
drawpixel_safe((char *)(p-xp-ypbpl), col); // 6
if ((uint32_t)(x1+xp) < (uint32_t)xres && (uint32_t)(y1-yp) < (uint32_t)ydim16)
drawpixel((char *)(p+xp-ypbpl), col); // 7
drawpixel_safe((char *)(p+xp-ypbpl), col); // 7
if ((uint32_t)(x1+yp) < (uint32_t)xres && (uint32_t)(y1-xp) < (uint32_t)ydim16)
drawpixel((char *)(p+yp-xpbpl), col); // 8
drawpixel_safe((char *)(p+yp-xpbpl), col); // 8
}
}
while (yp > xp);