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- refactored the use of tag lists so that they do not have to be passed around between functions.

Browse source 
This means that the varargs functions themselves are now responsible for parsing them into DrawParms.
This was done because DrawTextV made a blanket assumption that every single vararg has the size of a 32 bit integer and caused crashes when anything else was passed. It also failed to eliminate any tag that is incompatible with text display. These will now abort DrawText and trigger an assert.
This commit is contained in:
Christoph Oelckers 2016-04-09 20:47:54 +02:00
parent e2ae7d8f5d
commit a827bab576
4 changed files with 250 additions and 234 deletions
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273
src/v_draw.cpp
View file

@ -112,7 +112,9 @@ void STACK_ARGS DCanvas::DrawTexture (FTexture *img, double x, double y, int tag
va_start(tags, tags_first);
DrawParms parms;
if (!ParseDrawTextureTags(img, x, y, tags_first, tags, &parms, false))
bool res = ParseDrawTextureTags(img, x, y, tags_first, tags, &parms, false);
va_end(tags);
if (!res)
{
return;
}
@ -249,10 +251,11 @@ void DCanvas::DrawTextureParms(FTexture *img, DrawParms &parms)
if (parms.windowleft > 0 || parms.windowright < parms.texwidth)
{
double wi = MIN(parms.windowright, parms.texwidth);
double xscale = parms.destwidth / parms.texwidth;
x0 += parms.windowleft * xscale;
frac += FLOAT2FIXED(parms.windowleft);
x2 -= (parms.texwidth - parms.windowright) * xscale;
x2 -= (parms.texwidth - wi) * xscale;
}
if (x0 < parms.lclip)
{
@ -330,18 +333,111 @@ void DCanvas::DrawTextureParms(FTexture *img, DrawParms &parms)
#endif
}
bool DCanvas::SetTextureParms(DrawParms *parms, FTexture *img, double xx, double yy) const
{
if (img != NULL)
{
parms->x = xx;
parms->y = yy;
parms->texwidth = img->GetScaledWidthDouble();
parms->texheight = img->GetScaledHeightDouble();
if (parms->top == INT_MAX || parms->fortext)
{
parms->top = img->GetScaledTopOffset();
}
if (parms->left == INT_MAX || parms->fortext)
{
parms->left = img->GetScaledLeftOffset();
}
if (parms->destwidth == INT_MAX || parms->fortext)
{
parms->destwidth = img->GetScaledWidthDouble();
}
if (parms->destheight == INT_MAX || parms->fortext)
{
parms->destheight = img->GetScaledHeightDouble();
}
switch (parms->cleanmode)
{
default:
break;
case DTA_Clean:
parms->x = (parms->x - 160.0) * CleanXfac + (Width * 0.5);
parms->y = (parms->y - 100.0) * CleanYfac + (Height * 0.5);
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
break;
case DTA_CleanNoMove:
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
break;
case DTA_CleanNoMove_1:
parms->destwidth = parms->texwidth * CleanXfac_1;
parms->destheight = parms->texheight * CleanYfac_1;
break;
case DTA_Fullscreen:
parms->x = parms->y = 0;
break;
case DTA_HUDRules:
case DTA_HUDRulesC:
{
bool xright = parms->x < 0;
bool ybot = parms->y < 0;
if (hud_scale)
{
parms->x *= CleanXfac;
if (parms->cleanmode == DTA_HUDRulesC)
parms->x += Width * 0.5;
else if (xright)
parms->x = Width + parms->x;
parms->y *= CleanYfac;
if (ybot)
parms->y = Height + parms->y;
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
}
else
{
if (parms->cleanmode == DTA_HUDRulesC)
parms->x += Width * 0.5;
else if (xright)
parms->x = Width + parms->x;
if (ybot)
parms->y = Height + parms->y;
}
break;
}
}
if (parms->virtWidth != Width || parms->virtHeight != Height)
{
VirtualToRealCoords(parms->x, parms->y, parms->destwidth, parms->destheight,
parms->virtWidth, parms->virtHeight, parms->virtBottom, !parms->keepratio);
}
}
return false;
}
bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag, va_list tags, DrawParms *parms, bool fortext) const
{
INTBOOL boolval;
int intval;
bool translationset = false;
bool virtBottom;
bool fillcolorset = false;
if (img == NULL || img->UseType == FTexture::TEX_Null)
if (!fortext)
{
va_end(tags);
return false;
if (img == NULL || img->UseType == FTexture::TEX_Null)
{
va_end(tags);
return false;
}
}
// Do some sanity checks on the coordinates.
@ -351,21 +447,17 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
return false;
}
virtBottom = false;
parms->texwidth = img->GetScaledWidthDouble();
parms->texheight = img->GetScaledHeightDouble();
parms->fortext = fortext;
parms->windowleft = 0;
parms->windowright = parms->texwidth;
parms->windowright = INT_MAX;
parms->dclip = this->GetHeight();
parms->uclip = 0;
parms->lclip = 0;
parms->rclip = this->GetWidth();
parms->destwidth = parms->windowright;
parms->destheight = parms->texheight;
parms->top = img->GetScaledTopOffset();
parms->left = img->GetScaledLeftOffset();
parms->left = INT_MAX;
parms->top = INT_MAX;
parms->destwidth = INT_MAX;
parms->destheight = INT_MAX;
parms->Alpha = 1.f;
parms->fillcolor = -1;
parms->remap = NULL;
@ -383,48 +475,50 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
parms->bilinear = false;
parms->specialcolormap = NULL;
parms->colormapstyle = NULL;
parms->x = x;
parms->y = y;
parms->cleanmode = DTA_Base;
parms->scalex = parms->scaley = 1;
parms->cellx = parms->celly = 0;
parms->maxstrlen = INT_MAX;
parms->virtBottom = false;
// Parse the tag list for attributes. (For floating point attributes,
// consider that the C ABI dictates that all floats be promoted to
// doubles when passed as function arguments.)
while (tag != TAG_DONE)
{
va_list *more_p;
DWORD data;
switch (tag)
{
case TAG_IGNORE:
default:
data = va_arg(tags, DWORD);
break;
case TAG_MORE:
more_p = va_arg(tags, va_list *);
va_end (tags);
#ifndef NO_VA_COPY
va_copy (tags, *more_p);
#else
tags = *more_p;
#endif
break;
case DTA_DestWidth:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destwidth = va_arg(tags, int);
break;
case DTA_DestWidthF:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destwidth = va_arg(tags, double);
break;
case DTA_DestHeight:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destheight = va_arg(tags, int);
break;
case DTA_DestHeightF:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destheight = va_arg(tags, double);
break;
@ -432,10 +526,9 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
boolval = va_arg(tags, INTBOOL);
if (boolval)
{
parms->x = (parms->x - 160.0) * CleanXfac + (Width * 0.5);
parms->y = (parms->y - 100.0) * CleanYfac + (Height * 0.5);
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
parms->scalex = 1;
parms->scaley = 1;
parms->cleanmode = tag;
}
break;
@ -443,8 +536,9 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
boolval = va_arg(tags, INTBOOL);
if (boolval)
{
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
parms->scalex = CleanXfac;
parms->scaley = CleanYfac;
parms->cleanmode = tag;
}
break;
@ -452,8 +546,9 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
boolval = va_arg(tags, INTBOOL);
if (boolval)
{
parms->destwidth = parms->texwidth * CleanXfac_1;
parms->destheight = parms->texheight * CleanYfac_1;
parms->scalex = CleanXfac_1;
parms->scaley = CleanYfac_1;
parms->cleanmode = tag;
}
break;
@ -461,6 +556,9 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
boolval = va_arg(tags, INTBOOL);
if (boolval)
{
parms->cleanmode = DTA_Base;
parms->scalex = 1;
parms->scaley = 1;
parms->virtWidth = 320;
parms->virtHeight = 200;
}
@ -470,56 +568,37 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
boolval = va_arg(tags, INTBOOL);
if (boolval)
{
parms->cleanmode = DTA_Base;
parms->scalex = 1;
parms->scaley = 1;
parms->virtWidth = 320;
parms->virtHeight = 200;
}
virtBottom = true;
parms->virtBottom = true;
break;
case DTA_HUDRules:
{
bool xright = parms->x < 0;
bool ybot = parms->y < 0;
intval = va_arg(tags, int);
if (hud_scale)
{
parms->x *= CleanXfac;
if (intval == HUD_HorizCenter)
parms->x += Width * 0.5;
else if (xright)
parms->x = Width + parms->x;
parms->y *= CleanYfac;
if (ybot)
parms->y = Height + parms->y;
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
}
else
{
if (intval == HUD_HorizCenter)
parms->x += Width * 0.5;
else if (xright)
parms->x = Width + parms->x;
if (ybot)
parms->y = Height + parms->y;
}
}
intval = va_arg(tags, int);
parms->cleanmode = intval == HUD_HorizCenter ? DTA_HUDRulesC : DTA_HUDRules;
break;
case DTA_VirtualWidth:
parms->cleanmode = DTA_Base;
parms->virtWidth = va_arg(tags, int);
break;
case DTA_VirtualWidthF:
parms->cleanmode = DTA_Base;
parms->virtWidth = va_arg(tags, double);
break;
case DTA_VirtualHeight:
parms->cleanmode = DTA_Base;
parms->virtHeight = va_arg(tags, int);
break;
case DTA_VirtualHeightF:
parms->cleanmode = DTA_Base;
parms->virtHeight = va_arg(tags, double);
break;
@ -527,7 +606,9 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
boolval = va_arg(tags, INTBOOL);
if (boolval)
{
parms->x = parms->y = 0;
assert(fortext == false);
if (img == NULL) return false;
parms->cleanmode = DTA_Fullscreen;
parms->virtWidth = img->GetScaledWidthDouble();
parms->virtHeight = img->GetScaledHeightDouble();
}
@ -567,50 +648,70 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
break;
case DTA_TopOffset:
assert(fortext == false);
if (fortext) return false;
parms->top = va_arg(tags, int);
break;
case DTA_TopOffsetF:
assert(fortext == false);
if (fortext) return false;
parms->top = va_arg(tags, double);
break;
case DTA_LeftOffset:
assert(fortext == false);
if (fortext) return false;
parms->left = va_arg(tags, int);
break;
case DTA_LeftOffsetF:
assert(fortext == false);
if (fortext) return false;
parms->left = va_arg(tags, double);
break;
case DTA_CenterOffset:
assert(fortext == false);
if (fortext) return false;
if (va_arg(tags, int))
{
parms->left = parms->texwidth * 0.5;
parms->top = parms->texheight * 0.5;
parms->left = img->GetScaledWidthDouble() * 0.5;
parms->top = img->GetScaledHeightDouble() * 0.5;
}
break;
case DTA_CenterBottomOffset:
assert(fortext == false);
if (fortext) return false;
if (va_arg(tags, int))
{
parms->left = parms->texwidth * 0.5;
parms->top = parms->texheight;
parms->left = img->GetScaledWidthDouble() * 0.5;
parms->top = img->GetScaledHeightDouble();
}
break;
case DTA_WindowLeft:
assert(fortext == false);
if (fortext) return false;
parms->windowleft = va_arg(tags, int);
break;
case DTA_WindowLeftF:
assert(fortext == false);
if (fortext) return false;
parms->windowleft = va_arg(tags, double);
break;
case DTA_WindowRight:
assert(fortext == false);
if (fortext) return false;
parms->windowright = va_arg(tags, int);
break;
case DTA_WindowRightF:
assert(fortext == false);
if (fortext) return false;
parms->windowright = va_arg(tags, double);
break;
@ -692,6 +793,19 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
case DTA_ColormapStyle:
parms->colormapstyle = va_arg(tags, FColormapStyle *);
break;
case DTA_TextLen:
parms->maxstrlen = va_arg(tags, int);
break;
case DTA_CellX:
parms->cellx = va_arg(tags, int);
break;
case DTA_CellY:
parms->celly = va_arg(tags, int);
break;
}
tag = va_arg(tags, DWORD);
}
@ -702,15 +816,14 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
return false;
}
if (parms->virtWidth != Width || parms->virtHeight != Height)
if (img != NULL)
{
VirtualToRealCoords(parms->x, parms->y, parms->destwidth, parms->destheight,
parms->virtWidth, parms->virtHeight, virtBottom, !parms->keepratio);
}
SetTextureParms(parms, img, x, y);
if (parms->destwidth <= 0 || parms->destheight <= 0)
{
return false;
if (parms->destwidth <= 0 || parms->destheight <= 0)
{
return false;
}
}
if (parms->remap != NULL)

185
src/v_text.cpp
View file

@ -52,7 +52,7 @@
//
// Write a single character using the given font
//
void STACK_ARGS DCanvas::DrawChar (FFont *font, int normalcolor, int x, int y, BYTE character, ...)
void STACK_ARGS DCanvas::DrawChar (FFont *font, int normalcolor, int x, int y, BYTE character, int tag_first, ...)
{
if (font == NULL)
return;
@ -65,11 +65,17 @@ void STACK_ARGS DCanvas::DrawChar (FFont *font, int normalcolor, int x, int y, B
if (NULL != (pic = font->GetChar (character, &dummy)))
{
const FRemapTable *range = font->GetColorTranslation ((EColorRange)normalcolor);
va_list taglist;
va_start (taglist, character);
DrawTexture (pic, x, y, DTA_Translation, range, TAG_MORE, &taglist);
va_end (taglist);
DrawParms parms;
va_list tags;
va_start(tags, tag_first);
bool res = ParseDrawTextureTags(pic, x, y, tag_first, tags, &parms, false);
va_end(tags);
if (!res)
{
return;
}
parms.remap = font->GetColorTranslation((EColorRange)normalcolor);
DrawTextureParms(pic, parms);
}
}
@ -78,135 +84,53 @@ void STACK_ARGS DCanvas::DrawChar (FFont *font, int normalcolor, int x, int y, B
//
// Write a string using the given font
//
void DCanvas::DrawTextV(FFont *font, int normalcolor, int x, int y, const char *string, va_list taglist)
void STACK_ARGS DCanvas::DrawText(FFont *font, int normalcolor, int x, int y, const char *string, int tag_first, ...)
{
INTBOOL boolval;
va_list tags;
uint32 tag;
int maxstrlen = INT_MAX;
int w, maxwidth;
int w;
const BYTE *ch;
int c;
int cx;
int cy;
int boldcolor;
const FRemapTable *range;
int height;
int forcedwidth = 0;
int scalex, scaley;
FRemapTable *range;
int kerning;
FTexture *pic;
DrawParms parms;
va_list tags;
if (font == NULL || string == NULL)
return;
va_start(tags, tag_first);
bool res = ParseDrawTextureTags(nullptr, 0, 0, tag_first, tags, &parms, true);
va_end(tags);
if (!res)
{
return;
}
if (parms.celly == 0) parms.celly = font->GetHeight() + 1;
parms.celly *= parms.scaley;
if (normalcolor >= NumTextColors)
normalcolor = CR_UNTRANSLATED;
boldcolor = normalcolor ? normalcolor - 1 : NumTextColors - 1;
range = font->GetColorTranslation ((EColorRange)normalcolor);
height = font->GetHeight () + 1;
kerning = font->GetDefaultKerning ();
ch = (const BYTE *)string;
cx = x;
cy = y;
// Parse the tag list to see if we need to adjust for scaling.
maxwidth = Width;
scalex = scaley = 1;
#ifndef NO_VA_COPY
va_copy(tags, taglist);
#else
tags = taglist;
#endif
tag = va_arg(tags, uint32);
while (tag != TAG_DONE)
{
va_list *more_p;
DWORD data;
switch (tag)
{
case TAG_IGNORE:
default:
data = va_arg (tags, DWORD);
break;
case TAG_MORE:
more_p = va_arg (tags, va_list*);
va_end (tags);
#ifndef NO_VA_COPY
va_copy (tags, *more_p);
#else
tags = *more_p;
#endif
break;
// We don't handle these. :(
case DTA_DestWidth:
case DTA_DestHeight:
case DTA_Translation:
assert("Bad parameter for DrawText" && false);
return;
case DTA_CleanNoMove_1:
boolval = va_arg (tags, INTBOOL);
if (boolval)
{
scalex = CleanXfac_1;
scaley = CleanYfac_1;
maxwidth = Width - (Width % scalex);
}
break;
case DTA_CleanNoMove:
boolval = va_arg (tags, INTBOOL);
if (boolval)
{
scalex = CleanXfac;
scaley = CleanYfac;
maxwidth = Width - (Width % scalex);
}
break;
case DTA_Clean:
case DTA_320x200:
boolval = va_arg (tags, INTBOOL);
if (boolval)
{
scalex = scaley = 1;
maxwidth = 320;
}
break;
case DTA_VirtualWidth:
maxwidth = va_arg (tags, int);
scalex = scaley = 1;
break;
case DTA_TextLen:
maxstrlen = va_arg (tags, int);
break;
case DTA_CellX:
forcedwidth = va_arg (tags, int);
break;
case DTA_CellY:
height = va_arg (tags, int);
break;
}
tag = va_arg (tags, uint32);
}
va_end(tags);
height *= scaley;
while ((const char *)ch - string < maxstrlen)
while ((const char *)ch - string < parms.maxstrlen)
{
c = *ch++;
if (!c)
@ -225,53 +149,26 @@ void DCanvas::DrawTextV(FFont *font, int normalcolor, int x, int y, const char *
if (c == '\n')
{
cx = x;
cy += height;
cy += parms.celly;
continue;
}
if (NULL != (pic = font->GetChar (c, &w)))
{
#ifndef NO_VA_COPY
va_copy(tags, taglist);
#else
tags = taglist;
#endif
if (forcedwidth)
parms.remap = range;
SetTextureParms(&parms, pic, cx, cy);
if (parms.cellx)
{
w = forcedwidth;
DrawTexture (pic, cx, cy,
DTA_Translation, range,
DTA_DestWidth, forcedwidth,
DTA_DestHeight, height,
TAG_MORE, &tags);
w = parms.cellx;
parms.destwidth = parms.cellx;
parms.destheight = parms.celly;
}
else
{
DrawTexture (pic, cx, cy,
DTA_Translation, range,
TAG_MORE, &tags);
}
va_end (tags);
DrawTextureParms(pic, parms);
}
cx += (w + kerning) * scalex;
cx += (w + kerning) * parms.scalex;
}
va_end(taglist);
}
void STACK_ARGS DCanvas::DrawText (FFont *font, int normalcolor, int x, int y, const char *string, ...)
{
va_list tags;
va_start(tags, string);
DrawTextV(font, normalcolor, x, y, string, tags);
}
// A synonym so that this can still be used in files that #include Windows headers
void STACK_ARGS DCanvas::DrawTextA (FFont *font, int normalcolor, int x, int y, const char *string, ...)
{
va_list tags;
va_start(tags, string);
DrawTextV(font, normalcolor, x, y, string, tags);
}
//
// Find string width using this font

21
src/v_video.h
View file

@ -63,8 +63,6 @@ class FTexture;
#define TAG_DONE (0) /* Used to indicate the end of the Tag list */
#define TAG_END (0) /* Ditto */
#define TAG_IGNORE (1) /* Ignore this Tag */
#define TAG_MORE (2) /* Ends this list and continues with the */
/* list pointed to in ti_Data */
#define TAG_USER ((DWORD)(1u<<30))
@ -102,6 +100,7 @@ enum
DTA_ClipRight, // don't draw anything at or to the right of this column (on dest, not source)
DTA_Masked, // true(default)=use masks from texture, false=ignore masks
DTA_HUDRules, // use fullscreen HUD rules to position and size textures
DTA_HUDRulesC, // only used internally for marking HUD_HorizCenter
DTA_KeepRatio, // doesn't adjust screen size for DTA_Virtual* if the aspect ratio is not 4:3
DTA_RenderStyle, // same as render style for actors
DTA_ColorOverlay, // DWORD: ARGB to overlay on top of image; limited to black for software
@ -149,6 +148,7 @@ struct DrawParms
double virtHeight;
double windowleft;
double windowright;
int cleanmode;
int dclip;
int uclip;
int lclip;
@ -170,6 +170,11 @@ struct DrawParms
FRenderStyle style;
struct FSpecialColormap *specialcolormap;
struct FColormapStyle *colormapstyle;
int scalex, scaley;
int cellx, celly;
int maxstrlen;
bool fortext;
bool virtBottom;
};
//
@ -241,6 +246,7 @@ public:
// Text drawing functions -----------------------------------------------
// 2D Texture drawing
bool SetTextureParms(DrawParms *parms, FTexture *img, double x, double y) const;
void STACK_ARGS DrawTexture (FTexture *img, double x, double y, int tags, ...);
void FillBorder (FTexture *img); // Fills the border around a 4:3 part of the screen on non-4:3 displays
void VirtualToRealCoords(double &x, double &y, double &w, double &h, double vwidth, double vheight, bool vbottom=false, bool handleaspect=true) const;
@ -249,13 +255,12 @@ public:
void VirtualToRealCoordsFixed(fixed_t &x, fixed_t &y, fixed_t &w, fixed_t &h, int vwidth, int vheight, bool vbottom=false, bool handleaspect=true) const;
void VirtualToRealCoordsInt(int &x, int &y, int &w, int &h, int vwidth, int vheight, bool vbottom=false, bool handleaspect=true) const;
// 2D Text drawing
void STACK_ARGS DrawText (FFont *font, int normalcolor, int x, int y, const char *string, ...);
#ifndef DrawText // See WinUser.h for the definition of DrawText as a macro
void STACK_ARGS DrawTextA (FFont *font, int normalcolor, int x, int y, const char *string, ...);
#ifdef DrawText
#undef DrawText // See WinUser.h for the definition of DrawText as a macro
#endif
void DrawTextV (FFont *font, int normalcolor, int x, int y, const char *string, va_list tags);
void STACK_ARGS DrawChar (FFont *font, int normalcolor, int x, int y, BYTE character, ...);
// 2D Text drawing
void STACK_ARGS DrawText (FFont *font, int normalcolor, int x, int y, const char *string, int tag_first, ...);
void STACK_ARGS DrawChar (FFont *font, int normalcolor, int x, int y, BYTE character, int tag_first, ...);
protected:
BYTE *Buffer;

5
src/win32/fb_d3d9.cpp
View file

@ -2805,10 +2805,11 @@ void D3DFB::DrawTextureParms (FTexture *img, DrawParms &parms)
}
if (parms.windowleft > 0 || parms.windowright < parms.texwidth)
{
double wi = MIN(parms.windowright, parms.texwidth);
x0 += parms.windowleft * xscale;
u0 = float(u0 + parms.windowleft * uscale);
x1 -= (parms.texwidth - parms.windowright) * xscale;
u1 = float(u1 - (parms.texwidth - parms.windowright) * uscale);
x1 -= (parms.texwidth - wi) * xscale;
u1 = float(u1 - (parms.texwidth - wi) * uscale);
}
#if 0