diff options
Diffstat (limited to 'src/v_video.c')
| -rw-r--r-- | src/v_video.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/v_video.c b/src/v_video.c index 6549a81b..b6c621ba 100644 --- a/src/v_video.c +++ b/src/v_video.c @@ -54,6 +54,9 @@ static byte *dest_screen = NULL; int dirtybox[4]; +// haleyjd 08/28/10: clipping callback function for patches. +// This is needed for Chocolate Strife, which clips patches to the screen. +static vpatchclipfunc_t patchclip_callback = NULL; // // V_MarkRect @@ -108,6 +111,20 @@ void V_CopyRect(int srcx, int srcy, byte *source, } } +// +// V_SetPatchClipCallback +// +// haleyjd 08/28/10: Added for Strife support. +// By calling this function, you can setup runtime error checking for patch +// clipping. Strife never caused errors by drawing patches partway off-screen. +// Some versions of vanilla DOOM also behaved differently than the default +// implementation, so this could possibly be extended to those as well for +// accurate emulation. +// +void V_SetPatchClipCallback(vpatchclipfunc_t func) +{ + patchclip_callback = func; +} // // V_DrawPatch @@ -127,6 +144,13 @@ void V_DrawPatch(int x, int y, patch_t *patch) y -= SHORT(patch->topoffset); x -= SHORT(patch->leftoffset); + // haleyjd 08/28/10: Strife needs silent error checking here. + if(patchclip_callback) + { + if(!patchclip_callback(patch, x, y)) + return; + } + #ifdef RANGECHECK if (x < 0 || x + SHORT(patch->width) > SCREENWIDTH @@ -184,6 +208,13 @@ void V_DrawPatchFlipped(int x, int y, patch_t *patch) y -= SHORT(patch->topoffset); x -= SHORT(patch->leftoffset); + // haleyjd 08/28/10: Strife needs silent error checking here. + if(patchclip_callback) + { + if(!patchclip_callback(patch, x, y)) + return; + } + #ifdef RANGECHECK if (x < 0 || x + SHORT(patch->width) > SCREENWIDTH |