mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-11-07 21:41:25 +00:00
669 lines
15 KiB
C++
669 lines
15 KiB
C++
/*
|
|
** v_draw.cpp
|
|
** Draw patches and blocks to a canvas
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 1998-2006 Randy Heit
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
|
|
#include "doomtype.h"
|
|
#include "v_video.h"
|
|
#include "m_swap.h"
|
|
#include "r_defs.h"
|
|
#include "r_draw.h"
|
|
#include "r_things.h"
|
|
|
|
#include "i_system.h"
|
|
#include "i_video.h"
|
|
#include "templates.h"
|
|
|
|
// [RH] Stretch values to make a 320x200 image best fit the screen
|
|
// without using fractional steppings
|
|
int CleanXfac, CleanYfac;
|
|
|
|
// [RH] Effective screen sizes that the above scale values give you
|
|
int CleanWidth, CleanHeight;
|
|
|
|
CVAR (Bool, hud_scale, false, CVAR_ARCHIVE);
|
|
|
|
void STACK_ARGS DCanvas::DrawTexture (FTexture *img, int x0, int y0, DWORD tags_first, ...)
|
|
{
|
|
FTexture::Span unmaskedSpan[2];
|
|
const FTexture::Span **spanptr, *spans;
|
|
static BYTE identitymap[256];
|
|
static short bottomclipper[MAXWIDTH], topclipper[MAXWIDTH];
|
|
va_list tags;
|
|
DWORD tag;
|
|
BOOL boolval;
|
|
int intval;
|
|
|
|
if (img == NULL || img->UseType == FTexture::TEX_Null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int windowleft = 0;
|
|
int windowright = img->GetWidth();
|
|
int dclip = this->GetHeight();
|
|
int uclip = 0;
|
|
int lclip = 0;
|
|
int rclip = this->GetWidth();
|
|
int destwidth = windowright << FRACBITS;
|
|
int destheight = img->GetHeight() << FRACBITS;
|
|
int top = img->TopOffset;
|
|
int left = img->LeftOffset;
|
|
fixed_t alpha = FRACUNIT;
|
|
int fillcolor = -1;
|
|
const BYTE *translation = NULL;
|
|
BOOL alphaChannel = false;
|
|
BOOL flipX = false;
|
|
fixed_t shadowAlpha = 0;
|
|
int shadowColor = 0;
|
|
int virtWidth = this->GetWidth();
|
|
int virtHeight = this->GetHeight();
|
|
BOOL keepratio = false;
|
|
|
|
x0 <<= FRACBITS;
|
|
y0 <<= FRACBITS;
|
|
|
|
spanptr = &spans;
|
|
|
|
// Parse the tag list for attributes
|
|
va_start (tags, tags_first);
|
|
tag = tags_first;
|
|
|
|
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);
|
|
#ifdef __GNUC__
|
|
__va_copy (tags, *more_p);
|
|
#else
|
|
tags = *more_p;
|
|
#endif
|
|
break;
|
|
|
|
case DTA_DestWidth:
|
|
destwidth = va_arg (tags, int) << FRACBITS;
|
|
break;
|
|
|
|
case DTA_DestHeight:
|
|
destheight = va_arg (tags, int) << FRACBITS;
|
|
break;
|
|
|
|
case DTA_Clean:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
x0 = (x0 - 160*FRACUNIT) * CleanXfac + (Width * (FRACUNIT/2));
|
|
y0 = (y0 - 100*FRACUNIT) * CleanYfac + (Height * (FRACUNIT/2));
|
|
destwidth = img->GetWidth() * CleanXfac * FRACUNIT;
|
|
destheight = img->GetHeight() * CleanYfac * FRACUNIT;
|
|
}
|
|
break;
|
|
|
|
case DTA_CleanNoMove:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
destwidth = img->GetWidth() * CleanXfac * FRACUNIT;
|
|
destheight = img->GetHeight() * CleanYfac * FRACUNIT;
|
|
}
|
|
break;
|
|
|
|
case DTA_320x200:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
virtWidth = 320;
|
|
virtHeight = 200;
|
|
}
|
|
break;
|
|
|
|
case DTA_HUDRules:
|
|
{
|
|
bool xright = x0 < 0;
|
|
bool ybot = y0 < 0;
|
|
intval = va_arg (tags, int);
|
|
|
|
if (hud_scale)
|
|
{
|
|
x0 *= CleanXfac;
|
|
if (intval == HUD_HorizCenter)
|
|
x0 += Width * FRACUNIT / 2;
|
|
else if (xright)
|
|
x0 = Width * FRACUNIT + x0;
|
|
y0 *= CleanYfac;
|
|
if (ybot)
|
|
y0 = Height * FRACUNIT + y0;
|
|
destwidth = img->GetWidth() * CleanXfac * FRACUNIT;
|
|
destheight = img->GetHeight() * CleanYfac * FRACUNIT;
|
|
}
|
|
else
|
|
{
|
|
if (intval == HUD_HorizCenter)
|
|
x0 += Width * FRACUNIT / 2;
|
|
else if (xright)
|
|
x0 = Width * FRACUNIT + x0;
|
|
if (ybot)
|
|
y0 = Height * FRACUNIT + y0;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DTA_VirtualWidth:
|
|
virtWidth = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_VirtualHeight:
|
|
virtHeight = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_Alpha:
|
|
alpha = MIN<fixed_t> (FRACUNIT, va_arg (tags, fixed_t));
|
|
break;
|
|
|
|
case DTA_AlphaChannel:
|
|
alphaChannel = va_arg (tags, BOOL);
|
|
break;
|
|
|
|
case DTA_FillColor:
|
|
fillcolor = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_Translation:
|
|
translation = va_arg (tags, const BYTE *);
|
|
break;
|
|
|
|
case DTA_FlipX:
|
|
flipX = va_arg (tags, BOOL);
|
|
break;
|
|
|
|
case DTA_TopOffset:
|
|
top = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_LeftOffset:
|
|
left = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_CenterOffset:
|
|
if (va_arg (tags, int))
|
|
{
|
|
left = img->GetWidth() / 2;
|
|
top = img->GetHeight() / 2;
|
|
}
|
|
break;
|
|
|
|
case DTA_CenterBottomOffset:
|
|
if (va_arg (tags, int))
|
|
{
|
|
left = img->GetWidth() / 2;
|
|
top = img->GetHeight();
|
|
}
|
|
break;
|
|
|
|
case DTA_WindowLeft:
|
|
windowleft = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_WindowRight:
|
|
windowright = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_ClipTop:
|
|
uclip = va_arg (tags, int);
|
|
if (uclip < 0)
|
|
{
|
|
uclip = 0;
|
|
}
|
|
break;
|
|
|
|
case DTA_ClipBottom:
|
|
dclip = va_arg (tags, int);
|
|
if (dclip > this->GetHeight())
|
|
{
|
|
dclip = this->GetHeight();
|
|
}
|
|
break;
|
|
|
|
case DTA_ClipLeft:
|
|
lclip = va_arg (tags, int);
|
|
if (lclip < 0)
|
|
{
|
|
lclip = 0;
|
|
}
|
|
break;
|
|
|
|
case DTA_ClipRight:
|
|
rclip = va_arg (tags, int);
|
|
if (rclip > this->GetWidth())
|
|
{
|
|
rclip = this->GetWidth();
|
|
}
|
|
break;
|
|
|
|
case DTA_ShadowAlpha:
|
|
shadowAlpha = MIN<fixed_t> (FRACUNIT, va_arg (tags, fixed_t));
|
|
break;
|
|
|
|
case DTA_ShadowColor:
|
|
shadowColor = va_arg (tags, int);
|
|
break;
|
|
|
|
case DTA_Shadow:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
shadowAlpha = FRACUNIT/2;
|
|
shadowColor = 0;
|
|
}
|
|
else
|
|
{
|
|
shadowAlpha = 0;
|
|
}
|
|
break;
|
|
|
|
case DTA_Masked:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
spanptr = &spans;
|
|
}
|
|
else
|
|
{
|
|
spanptr = NULL;
|
|
}
|
|
break;
|
|
|
|
case DTA_KeepRatio:
|
|
keepratio = va_arg (tags, BOOL);
|
|
break;
|
|
}
|
|
tag = va_arg (tags, DWORD);
|
|
}
|
|
va_end (tags);
|
|
|
|
if (virtWidth != Width || virtHeight != Height)
|
|
{
|
|
int myratio = CheckRatio (Width, Height);
|
|
if (myratio != 0 && !keepratio)
|
|
{ // The target surface is not 4:3, so expand the specified
|
|
// virtual size to avoid undesired stretching of the image.
|
|
// Does not handle non-4:3 virtual sizes. I'll worry about
|
|
// those if somebody expresses a desire to use them.
|
|
x0 = Scale (Width*960, x0-virtWidth*FRACUNIT/2, virtWidth*BaseRatioSizes[myratio][0]) + Width*FRACUNIT/2;
|
|
y0 = Scale (Height, y0, virtHeight);
|
|
destwidth = FixedDiv (Width*960 * (destwidth>>FRACBITS), virtWidth*BaseRatioSizes[myratio][0]);
|
|
destheight = FixedDiv (Height * (destheight>>FRACBITS), virtHeight);
|
|
}
|
|
else
|
|
{
|
|
x0 = Scale (Width, x0, virtWidth);
|
|
y0 = Scale (Height, y0, virtHeight);
|
|
destwidth = FixedDiv (Width * (destwidth>>FRACBITS), virtWidth);
|
|
destheight = FixedDiv (Height * (destheight>>FRACBITS), virtHeight);
|
|
}
|
|
}
|
|
|
|
if (destwidth <= 0 || destheight <= 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
ERenderStyle style;
|
|
|
|
if (fillcolor >= 0)
|
|
{
|
|
if (alphaChannel)
|
|
{
|
|
style = STYLE_Shaded;
|
|
}
|
|
else if (alpha < FRACUNIT)
|
|
{
|
|
style = STYLE_TranslucentStencil;
|
|
}
|
|
else
|
|
{
|
|
style = STYLE_Stencil;
|
|
}
|
|
}
|
|
else if (alpha < FRACUNIT)
|
|
{
|
|
style = STYLE_Translucent;
|
|
}
|
|
else
|
|
{
|
|
style = STYLE_Normal;
|
|
}
|
|
|
|
fixedcolormap = identitymap;
|
|
ESPSResult mode = R_SetPatchStyle (style, alpha, 0, fillcolor<<24);
|
|
|
|
if (style != STYLE_Shaded)
|
|
{
|
|
if (translation != NULL)
|
|
{
|
|
dc_colormap = (lighttable_t *)translation;
|
|
}
|
|
else
|
|
{
|
|
dc_colormap = identitymap;
|
|
}
|
|
}
|
|
|
|
BYTE *destorgsave = dc_destorg;
|
|
dc_destorg = screen->GetBuffer();
|
|
|
|
x0 -= Scale (left, destwidth, img->GetWidth());
|
|
y0 -= Scale (top, destheight, img->GetHeight());
|
|
|
|
if (mode != DontDraw)
|
|
{
|
|
const BYTE *pixels;
|
|
int stop4;
|
|
|
|
if (spanptr == NULL)
|
|
{ // Create a single span for forced unmasked images
|
|
spans = unmaskedSpan;
|
|
unmaskedSpan[0].TopOffset = 0;
|
|
unmaskedSpan[0].Length = img->GetHeight();
|
|
unmaskedSpan[1].TopOffset = 0;
|
|
unmaskedSpan[1].Length = 0;
|
|
}
|
|
|
|
fixed_t centeryback = centeryfrac;
|
|
centeryfrac = 0;
|
|
|
|
sprtopscreen = y0;
|
|
spryscale = destheight / img->GetHeight();
|
|
|
|
// Fix precision errors that are noticeable at some resolutions
|
|
if ((spryscale * img->GetHeight()) >> FRACBITS != destheight >> FRACBITS)
|
|
spryscale++;
|
|
|
|
sprflipvert = false;
|
|
dc_iscale = 0xffffffffu / (unsigned)spryscale;
|
|
dc_texturemid = FixedMul (-y0, dc_iscale);
|
|
fixed_t frac = 0;
|
|
fixed_t xiscale = DivScale32 (img->GetWidth(), destwidth);
|
|
int x2 = (x0 + destwidth) >> FRACBITS;
|
|
|
|
if (bottomclipper[0] != dclip)
|
|
{
|
|
clearbufshort (bottomclipper, screen->GetWidth(), (short)dclip);
|
|
if (identitymap[1] != 1)
|
|
{
|
|
for (int i = 0; i < 256; ++i)
|
|
{
|
|
identitymap[i] = i;
|
|
}
|
|
}
|
|
}
|
|
if (uclip != 0)
|
|
{
|
|
if (topclipper[0] != uclip)
|
|
{
|
|
clearbufshort (topclipper, screen->GetWidth(), (short)uclip);
|
|
}
|
|
mceilingclip = topclipper;
|
|
}
|
|
else
|
|
{
|
|
mceilingclip = zeroarray;
|
|
}
|
|
mfloorclip = bottomclipper;
|
|
|
|
if (flipX)
|
|
{
|
|
frac = (img->GetWidth() << FRACBITS) - 1;
|
|
xiscale = -xiscale;
|
|
}
|
|
|
|
dc_x = x0 >> FRACBITS;
|
|
if (windowleft > 0 || windowright < img->GetWidth())
|
|
{
|
|
fixed_t xscale = destwidth / img->GetWidth();
|
|
dc_x += (windowleft * xscale) >> FRACBITS;
|
|
frac += windowleft << FRACBITS;
|
|
x2 -= ((img->GetWidth() - windowright) * xscale) >> FRACBITS;
|
|
}
|
|
if (dc_x < lclip)
|
|
{
|
|
frac += (lclip - dc_x) * xiscale;
|
|
dc_x = lclip;
|
|
}
|
|
if (x2 > rclip)
|
|
{
|
|
x2 = rclip;
|
|
}
|
|
|
|
if (destheight < 32*FRACUNIT)
|
|
{
|
|
mode = DoDraw0;
|
|
}
|
|
|
|
if (mode == DoDraw0)
|
|
{
|
|
// One column at a time
|
|
stop4 = dc_x;
|
|
}
|
|
else // DoDraw1
|
|
{
|
|
// Up to four columns at a time
|
|
stop4 = x2 & ~3;
|
|
}
|
|
|
|
if (dc_x < x2)
|
|
{
|
|
while ((dc_x < stop4) && (dc_x & 3))
|
|
{
|
|
pixels = img->GetColumn (frac >> FRACBITS, spanptr);
|
|
R_DrawMaskedColumn (pixels, spans);
|
|
dc_x++;
|
|
frac += xiscale;
|
|
}
|
|
|
|
while (dc_x < stop4)
|
|
{
|
|
rt_initcols();
|
|
for (int zz = 4; zz; --zz)
|
|
{
|
|
pixels = img->GetColumn (frac >> FRACBITS, spanptr);
|
|
R_DrawMaskedColumnHoriz (pixels, spans);
|
|
dc_x++;
|
|
frac += xiscale;
|
|
}
|
|
rt_draw4cols (dc_x - 4);
|
|
}
|
|
|
|
while (dc_x < x2)
|
|
{
|
|
pixels = img->GetColumn (frac >> FRACBITS, spanptr);
|
|
R_DrawMaskedColumn (pixels, spans);
|
|
dc_x++;
|
|
frac += xiscale;
|
|
}
|
|
}
|
|
centeryfrac = centeryback;
|
|
}
|
|
R_FinishSetPatchStyle ();
|
|
|
|
dc_destorg = destorgsave;
|
|
|
|
if (ticdup != 0 && menuactive == MENU_Off)
|
|
{
|
|
NetUpdate ();
|
|
}
|
|
}
|
|
|
|
void DCanvas::FillBorder (FTexture *img)
|
|
{
|
|
int myratio = CheckRatio (Width, Height);
|
|
if (myratio == 0)
|
|
{ // This is a 4:3 display, so no border to show
|
|
return;
|
|
}
|
|
int bordtop, bordbottom, bordleft, bordright, bord;
|
|
if (myratio & 4)
|
|
{ // Screen is taller than it is wide
|
|
bordleft = bordright = 0;
|
|
bord = Height - Height * BaseRatioSizes[myratio][3] / 48;
|
|
bordtop = bord / 2;
|
|
bordbottom = bord - bordtop;
|
|
}
|
|
else
|
|
{ // Screen is wider than it is tall
|
|
bordtop = bordbottom = 0;
|
|
bord = Width - Width * BaseRatioSizes[myratio][3] / 48;
|
|
bordleft = bord / 2;
|
|
bordright = bord - bordleft;
|
|
}
|
|
|
|
if (img != NULL)
|
|
{
|
|
FlatFill (0, 0, Width, bordtop, img); // Top
|
|
FlatFill (0, bordtop, bordleft, Height - bordbottom, img); // Left
|
|
FlatFill (Width - bordright, bordtop, Width, Height - bordbottom, img); // Right
|
|
FlatFill (0, Height - bordbottom, Width, Height, img); // Bottom
|
|
}
|
|
else
|
|
{
|
|
Clear (0, 0, Width, bordtop, 0); // Top
|
|
Clear (0, bordtop, bordleft, Height - bordbottom, 0); // Left
|
|
Clear (Width - bordright, bordtop, Width, Height - bordbottom, 0); // Right
|
|
Clear (0, Height - bordbottom, Width, Height, 0); // Bottom
|
|
}
|
|
}
|
|
|
|
|
|
/********************************/
|
|
/* */
|
|
/* Other miscellaneous routines */
|
|
/* */
|
|
/********************************/
|
|
|
|
|
|
//
|
|
// V_DrawBlock
|
|
// Draw a linear block of pixels into the view buffer.
|
|
//
|
|
void DCanvas::DrawBlock (int x, int y, int _width, int _height, const byte *src) const
|
|
{
|
|
int srcpitch = _width;
|
|
int destpitch;
|
|
byte *dest;
|
|
|
|
if (ClipBox (x, y, _width, _height, src, srcpitch))
|
|
{
|
|
return; // Nothing to draw
|
|
}
|
|
|
|
destpitch = Pitch;
|
|
dest = Buffer + y*Pitch + x;
|
|
|
|
do
|
|
{
|
|
memcpy (dest, src, _width);
|
|
src += srcpitch;
|
|
dest += destpitch;
|
|
} while (--_height);
|
|
}
|
|
|
|
//
|
|
// V_GetBlock
|
|
// Gets a linear block of pixels from the view buffer.
|
|
//
|
|
void DCanvas::GetBlock (int x, int y, int _width, int _height, byte *dest) const
|
|
{
|
|
const byte *src;
|
|
|
|
#ifdef RANGECHECK
|
|
if (x<0
|
|
||x+_width > Width
|
|
|| y<0
|
|
|| y+_height>Height)
|
|
{
|
|
I_Error ("Bad V_GetBlock");
|
|
}
|
|
#endif
|
|
|
|
src = Buffer + y*Pitch + x;
|
|
|
|
while (_height--)
|
|
{
|
|
memcpy (dest, src, _width);
|
|
src += Pitch;
|
|
dest += _width;
|
|
}
|
|
}
|
|
|
|
// Returns true if the box was completely clipped. False otherwise.
|
|
bool DCanvas::ClipBox (int &x, int &y, int &w, int &h, const byte *&src, const int srcpitch) const
|
|
{
|
|
if (x >= Width || y >= Height || x+w <= 0 || y+h <= 0)
|
|
{ // Completely clipped off screen
|
|
return true;
|
|
}
|
|
if (x < 0) // clip left edge
|
|
{
|
|
src -= x;
|
|
w += x;
|
|
x = 0;
|
|
}
|
|
if (x+w > Width) // clip right edge
|
|
{
|
|
w = Width - x;
|
|
}
|
|
if (y < 0) // clip top edge
|
|
{
|
|
src -= y*srcpitch;
|
|
h += y;
|
|
y = 0;
|
|
}
|
|
if (y+h > Height) // clip bottom edge
|
|
{
|
|
h = Height - y;
|
|
}
|
|
return false;
|
|
}
|