mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-17 18:10:57 +00:00
96d328de9b
For some files that had the Doom Source license attached but saw heavy external contributions over the years I added a special note to license all original ZDoom code under BSD.
520 lines
11 KiB
C++
520 lines
11 KiB
C++
//-----------------------------------------------------------------------------
|
|
//
|
|
// Copyright 1993-1996 id Software
|
|
// Copyright 1999-2016 Randy Heit
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program. If not, see http://www.gnu.org/licenses/
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// DESCRIPTION:
|
|
// Mission begin melt/wipe screen special effect.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include "i_video.h"
|
|
#include "v_video.h"
|
|
#include "m_random.h"
|
|
#include "doomdef.h"
|
|
#include "f_wipe.h"
|
|
#include "c_cvars.h"
|
|
#include "templates.h"
|
|
#include "v_palette.h"
|
|
|
|
EXTERN_CVAR(Bool, r_blendmethod)
|
|
|
|
//
|
|
// SCREEN WIPE PACKAGE
|
|
//
|
|
|
|
static int CurrentWipeType;
|
|
|
|
static short *wipe_scr_start;
|
|
static short *wipe_scr_end;
|
|
static int *y;
|
|
|
|
// [RH] Fire Wipe
|
|
#define FIREWIDTH 64
|
|
#define FIREHEIGHT 64
|
|
static uint8_t *burnarray;
|
|
static int density;
|
|
static int burntime;
|
|
|
|
// [RH] Crossfade
|
|
static int fade;
|
|
|
|
|
|
// Melt -------------------------------------------------------------
|
|
|
|
// Match the strip sizes that oldschool Doom used on a 320x200 screen.
|
|
#define MELT_WIDTH 160
|
|
#define MELT_HEIGHT 200
|
|
|
|
void wipe_shittyColMajorXform (short *array)
|
|
{
|
|
int x, y;
|
|
short *dest;
|
|
int width = SCREENWIDTH / 2;
|
|
|
|
dest = new short[width*SCREENHEIGHT*2];
|
|
|
|
for(y = 0; y < SCREENHEIGHT; y++)
|
|
for(x = 0; x < width; x++)
|
|
dest[x*SCREENHEIGHT+y] = array[y*width+x];
|
|
|
|
memcpy(array, dest, SCREENWIDTH*SCREENHEIGHT);
|
|
|
|
delete[] dest;
|
|
}
|
|
|
|
bool wipe_initMelt (int ticks)
|
|
{
|
|
int i, r;
|
|
|
|
// copy start screen to main screen
|
|
screen->DrawBlock (0, 0, SCREENWIDTH, SCREENHEIGHT, (uint8_t *)wipe_scr_start);
|
|
|
|
// makes this wipe faster (in theory)
|
|
// to have stuff in column-major format
|
|
wipe_shittyColMajorXform (wipe_scr_start);
|
|
wipe_shittyColMajorXform (wipe_scr_end);
|
|
|
|
// setup initial column positions
|
|
// (y<0 => not ready to scroll yet)
|
|
y = new int[MELT_WIDTH];
|
|
y[0] = -(M_Random() & 15);
|
|
for (i = 1; i < MELT_WIDTH; i++)
|
|
{
|
|
r = (M_Random()%3) - 1;
|
|
y[i] = clamp(y[i-1] + r, -15, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool wipe_doMelt (int ticks)
|
|
{
|
|
int i, j, dy, x;
|
|
const short *s;
|
|
short *d;
|
|
bool done = true;
|
|
|
|
while (ticks--)
|
|
{
|
|
done = true;
|
|
for (i = 0; i < MELT_WIDTH; i++)
|
|
{
|
|
if (y[i] < 0)
|
|
{
|
|
y[i]++;
|
|
done = false;
|
|
}
|
|
else if (y[i] < MELT_HEIGHT)
|
|
{
|
|
dy = (y[i] < 16) ? y[i]+1 : 8;
|
|
y[i] = MIN(y[i] + dy, MELT_HEIGHT);
|
|
done = false;
|
|
}
|
|
if (ticks == 0 && y[i] >= 0)
|
|
{ // Only draw for the final tick.
|
|
const int pitch = screen->GetPitch() / 2;
|
|
int sy = y[i] * SCREENHEIGHT / MELT_HEIGHT;
|
|
|
|
for (x = i * (SCREENWIDTH/2) / MELT_WIDTH; x < (i + 1) * (SCREENWIDTH/2) / MELT_WIDTH; ++x)
|
|
{
|
|
s = &wipe_scr_end[x*SCREENHEIGHT];
|
|
d = &((short *)screen->GetBuffer())[x];
|
|
|
|
for (j = sy; j != 0; --j)
|
|
{
|
|
*d = *(s++);
|
|
d += pitch;
|
|
}
|
|
|
|
s = &wipe_scr_start[x*SCREENHEIGHT];
|
|
|
|
for (j = SCREENHEIGHT - sy; j != 0; --j)
|
|
{
|
|
*d = *(s++);
|
|
d += pitch;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return done;
|
|
}
|
|
|
|
bool wipe_exitMelt (int ticks)
|
|
{
|
|
delete[] y;
|
|
return 0;
|
|
}
|
|
|
|
// Burn -------------------------------------------------------------
|
|
|
|
bool wipe_initBurn (int ticks)
|
|
{
|
|
burnarray = new uint8_t[FIREWIDTH * (FIREHEIGHT+5)];
|
|
memset (burnarray, 0, FIREWIDTH * (FIREHEIGHT+5));
|
|
density = 4;
|
|
burntime = 0;
|
|
return 0;
|
|
}
|
|
|
|
int wipe_CalcBurn (uint8_t *burnarray, int width, int height, int density)
|
|
{
|
|
// This is a modified version of the fire that was once used
|
|
// on the player setup menu.
|
|
static int voop;
|
|
|
|
int a, b;
|
|
uint8_t *from;
|
|
|
|
// generator
|
|
from = &burnarray[width * height];
|
|
b = voop;
|
|
voop += density / 3;
|
|
for (a = 0; a < density/8; a++)
|
|
{
|
|
unsigned int offs = (a+b) & (width - 1);
|
|
unsigned int v = M_Random();
|
|
v = MIN(from[offs] + 4 + (v & 15) + (v >> 3) + (M_Random() & 31), 255u);
|
|
from[offs] = from[width*2 + ((offs + width*3/2) & (width - 1))] = v;
|
|
}
|
|
|
|
density = MIN(density + 10, width * 7);
|
|
|
|
from = burnarray;
|
|
for (b = 0; b <= height; b += 2)
|
|
{
|
|
uint8_t *pixel = from;
|
|
|
|
// special case: first pixel on line
|
|
uint8_t *p = pixel + (width << 1);
|
|
unsigned int top = *p + *(p + width - 1) + *(p + 1);
|
|
unsigned int bottom = *(pixel + (width << 2));
|
|
unsigned int c1 = (top + bottom) >> 2;
|
|
if (c1 > 1) c1--;
|
|
*pixel = c1;
|
|
*(pixel + width) = (c1 + bottom) >> 1;
|
|
pixel++;
|
|
|
|
// main line loop
|
|
for (a = 1; a < width-1; a++)
|
|
{
|
|
// sum top pixels
|
|
p = pixel + (width << 1);
|
|
top = *p + *(p - 1) + *(p + 1);
|
|
|
|
// bottom pixel
|
|
bottom = *(pixel + (width << 2));
|
|
|
|
// combine pixels
|
|
c1 = (top + bottom) >> 2;
|
|
if (c1 > 1) c1--;
|
|
|
|
// store pixels
|
|
*pixel = c1;
|
|
*(pixel + width) = (c1 + bottom) >> 1; // interpolate
|
|
|
|
// next pixel
|
|
pixel++;
|
|
}
|
|
|
|
// special case: last pixel on line
|
|
p = pixel + (width << 1);
|
|
top = *p + *(p - 1) + *(p - width + 1);
|
|
bottom = *(pixel + (width << 2));
|
|
c1 = (top + bottom) >> 2;
|
|
if (c1 > 1) c1--;
|
|
*pixel = c1;
|
|
*(pixel + width) = (c1 + bottom) >> 1;
|
|
|
|
// next line
|
|
from += width << 1;
|
|
}
|
|
|
|
// Check for done-ness. (Every pixel with level 126 or higher counts as done.)
|
|
for (a = width * height, from = burnarray; a != 0; --a, ++from)
|
|
{
|
|
if (*from < 126)
|
|
{
|
|
return density;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
bool wipe_doBurn (int ticks)
|
|
{
|
|
bool done;
|
|
|
|
burntime += ticks;
|
|
ticks *= 2;
|
|
|
|
// Make the fire burn
|
|
done = false;
|
|
while (!done && ticks--)
|
|
{
|
|
density = wipe_CalcBurn(burnarray, FIREWIDTH, FIREHEIGHT, density);
|
|
done = (density < 0);
|
|
}
|
|
|
|
// Draw the screen
|
|
int xstep, ystep, firex, firey;
|
|
int x, y;
|
|
uint8_t *to, *fromold, *fromnew;
|
|
const int SHIFT = 16;
|
|
|
|
xstep = (FIREWIDTH << SHIFT) / SCREENWIDTH;
|
|
ystep = (FIREHEIGHT << SHIFT) / SCREENHEIGHT;
|
|
to = screen->GetBuffer();
|
|
fromold = (uint8_t *)wipe_scr_start;
|
|
fromnew = (uint8_t *)wipe_scr_end;
|
|
|
|
if (!r_blendmethod)
|
|
{
|
|
for (y = 0, firey = 0; y < SCREENHEIGHT; y++, firey += ystep)
|
|
{
|
|
for (x = 0, firex = 0; x < SCREENWIDTH; x++, firex += xstep)
|
|
{
|
|
int fglevel;
|
|
|
|
fglevel = burnarray[(firex>>SHIFT)+(firey>>SHIFT)*FIREWIDTH] / 2;
|
|
if (fglevel >= 63)
|
|
{
|
|
to[x] = fromnew[x];
|
|
}
|
|
else if (fglevel == 0)
|
|
{
|
|
to[x] = fromold[x];
|
|
done = false;
|
|
}
|
|
else
|
|
{
|
|
int bglevel = 64-fglevel;
|
|
uint32_t *fg2rgb = Col2RGB8[fglevel];
|
|
uint32_t *bg2rgb = Col2RGB8[bglevel];
|
|
uint32_t fg = fg2rgb[fromnew[x]];
|
|
uint32_t bg = bg2rgb[fromold[x]];
|
|
fg = (fg+bg) | 0x1f07c1f;
|
|
to[x] = RGB32k.All[fg & (fg>>15)];
|
|
done = false;
|
|
}
|
|
}
|
|
fromold += SCREENWIDTH;
|
|
fromnew += SCREENWIDTH;
|
|
to += SCREENPITCH;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
for (y = 0, firey = 0; y < SCREENHEIGHT; y++, firey += ystep)
|
|
{
|
|
for (x = 0, firex = 0; x < SCREENWIDTH; x++, firex += xstep)
|
|
{
|
|
int fglevel;
|
|
|
|
fglevel = burnarray[(firex>>SHIFT)+(firey>>SHIFT)*FIREWIDTH] / 2;
|
|
if (fglevel >= 63)
|
|
{
|
|
to[x] = fromnew[x];
|
|
}
|
|
else if (fglevel == 0)
|
|
{
|
|
to[x] = fromold[x];
|
|
done = false;
|
|
}
|
|
else
|
|
{
|
|
int bglevel = 64-fglevel;
|
|
|
|
const PalEntry* pal = GPalette.BaseColors;
|
|
|
|
uint32_t fg = fromnew[x];
|
|
uint32_t bg = fromold[x];
|
|
int r = MIN((pal[fg].r * fglevel + pal[bg].r * bglevel) >> 8, 63);
|
|
int g = MIN((pal[fg].g * fglevel + pal[bg].g * bglevel) >> 8, 63);
|
|
int b = MIN((pal[fg].b * fglevel + pal[bg].b * bglevel) >> 8, 63);
|
|
to[x] = RGB256k.RGB[r][g][b];
|
|
done = false;
|
|
}
|
|
}
|
|
fromold += SCREENWIDTH;
|
|
fromnew += SCREENWIDTH;
|
|
to += SCREENPITCH;
|
|
}
|
|
}
|
|
return done || (burntime > 40);
|
|
}
|
|
|
|
bool wipe_exitBurn (int ticks)
|
|
{
|
|
delete[] burnarray;
|
|
return 0;
|
|
}
|
|
|
|
// Crossfade --------------------------------------------------------
|
|
|
|
bool wipe_initFade (int ticks)
|
|
{
|
|
fade = 0;
|
|
return 0;
|
|
}
|
|
|
|
bool wipe_doFade (int ticks)
|
|
{
|
|
fade += ticks * 2;
|
|
if (fade > 64)
|
|
{
|
|
screen->DrawBlock (0, 0, SCREENWIDTH, SCREENHEIGHT, (uint8_t *)wipe_scr_end);
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
int x, y;
|
|
int bglevel = 64 - fade;
|
|
uint32_t *fg2rgb = Col2RGB8[fade];
|
|
uint32_t *bg2rgb = Col2RGB8[bglevel];
|
|
uint8_t *fromnew = (uint8_t *)wipe_scr_end;
|
|
uint8_t *fromold = (uint8_t *)wipe_scr_start;
|
|
uint8_t *to = screen->GetBuffer();
|
|
const PalEntry *pal = GPalette.BaseColors;
|
|
|
|
if (!r_blendmethod)
|
|
{
|
|
for (y = 0; y < SCREENHEIGHT; y++)
|
|
{
|
|
for (x = 0; x < SCREENWIDTH; x++)
|
|
{
|
|
uint32_t fg = fg2rgb[fromnew[x]];
|
|
uint32_t bg = bg2rgb[fromold[x]];
|
|
fg = (fg+bg) | 0x1f07c1f;
|
|
to[x] = RGB32k.All[fg & (fg>>15)];
|
|
}
|
|
fromnew += SCREENWIDTH;
|
|
fromold += SCREENWIDTH;
|
|
to += SCREENPITCH;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (y = 0; y < SCREENHEIGHT; y++)
|
|
{
|
|
for (x = 0; x < SCREENWIDTH; x++)
|
|
{
|
|
uint32_t fg = fromnew[x];
|
|
uint32_t bg = fromold[x];
|
|
int r = MIN((pal[fg].r * (64-bglevel) + pal[bg].r * bglevel) >> 8, 63);
|
|
int g = MIN((pal[fg].g * (64-bglevel) + pal[bg].g * bglevel) >> 8, 63);
|
|
int b = MIN((pal[fg].b * (64-bglevel) + pal[bg].b * bglevel) >> 8, 63);
|
|
to[x] = RGB256k.RGB[r][g][b];
|
|
}
|
|
fromnew += SCREENWIDTH;
|
|
fromold += SCREENWIDTH;
|
|
to += SCREENPITCH;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool wipe_exitFade (int ticks)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
// General Wipe Functions -------------------------------------------
|
|
|
|
static bool (*wipes[])(int) =
|
|
{
|
|
wipe_initMelt, wipe_doMelt, wipe_exitMelt,
|
|
wipe_initBurn, wipe_doBurn, wipe_exitBurn,
|
|
wipe_initFade, wipe_doFade, wipe_exitFade
|
|
};
|
|
|
|
// Returns true if the wipe should be performed.
|
|
bool wipe_StartScreen (int type)
|
|
{
|
|
if (screen->IsBgra())
|
|
return false;
|
|
|
|
CurrentWipeType = clamp(type, 0, wipe_NUMWIPES - 1);
|
|
|
|
if (CurrentWipeType)
|
|
{
|
|
wipe_scr_start = new short[SCREENWIDTH * SCREENHEIGHT / 2];
|
|
screen->GetBlock (0, 0, SCREENWIDTH, SCREENHEIGHT, (uint8_t *)wipe_scr_start);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void wipe_EndScreen (void)
|
|
{
|
|
if (screen->IsBgra())
|
|
return;
|
|
|
|
if (CurrentWipeType)
|
|
{
|
|
wipe_scr_end = new short[SCREENWIDTH * SCREENHEIGHT / 2];
|
|
screen->GetBlock (0, 0, SCREENWIDTH, SCREENHEIGHT, (uint8_t *)wipe_scr_end);
|
|
screen->DrawBlock (0, 0, SCREENWIDTH, SCREENHEIGHT, (uint8_t *)wipe_scr_start); // restore start scr.
|
|
|
|
// Initialize the wipe
|
|
(*wipes[(CurrentWipeType-1)*3])(0);
|
|
}
|
|
}
|
|
|
|
// Returns true if the wipe is done.
|
|
bool wipe_ScreenWipe (int ticks)
|
|
{
|
|
bool rc;
|
|
|
|
if (screen->IsBgra())
|
|
return true;
|
|
|
|
if (CurrentWipeType == wipe_None)
|
|
return true;
|
|
|
|
// do a piece of wipe-in
|
|
rc = (*wipes[(CurrentWipeType-1)*3+1])(ticks);
|
|
|
|
return rc;
|
|
}
|
|
|
|
// Final things for the wipe
|
|
void wipe_Cleanup()
|
|
{
|
|
if (screen->IsBgra())
|
|
return;
|
|
|
|
if (wipe_scr_start != NULL)
|
|
{
|
|
delete[] wipe_scr_start;
|
|
wipe_scr_start = NULL;
|
|
}
|
|
if (wipe_scr_end != NULL)
|
|
{
|
|
delete[] wipe_scr_end;
|
|
wipe_scr_end = NULL;
|
|
}
|
|
if (CurrentWipeType > 0)
|
|
{
|
|
(*wipes[(CurrentWipeType-1)*3+2])(0);
|
|
}
|
|
}
|