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id_vl.c
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/* ID_VL.C */
#include <string.h>
#include "wl_def.h"
#ifdef CRT
#include "id_crt.h"
#endif
#if defined(_arch_dreamcast)
boolean usedoublebuffering = false;
unsigned int screenWidth = 640;
unsigned int screenHeight = 400;
#elif defined(GP2X)
boolean usedoublebuffering = true;
unsigned int screenWidth = 320;
unsigned int screenHeight = 240;
#if defined(GP2X_940)
unsigned int screenBits = 8;
#else
unsigned int screenBits = 16;
#endif
#elif defined(PS2)
boolean usedoublebuffering = true;
unsigned int screenWidth = 640;
unsigned int screenHeight = 448;
unsigned int screenBits = 8;
#elif defined(N3DS)
boolean usedoublebuffering = true;
unsigned int screenWidth = 400;
unsigned int screenHeight = 240;
unsigned int screenBits = 32; /* use "best" color depth according to libSDL */ /* ADDEDFIX 0 */
#else
boolean usedoublebuffering = true;
#if defined(SCALE2X)
unsigned int screenWidth = 320;
unsigned int screenHeight = 200;
static unsigned int scaledScreenWidth = 640;
static unsigned int scaledScreenHeight = 405;
#else
#ifdef SEGA_SATURN
unsigned int screenWidth = SATURN_WIDTH;
unsigned int screenHeight = SATURN_HEIGHT;
#else
unsigned int screenWidth = 640;
unsigned int screenHeight = 405;
#endif
#endif
unsigned int screenBits = 8; /* use "best" color depth according to libSDL */
#endif
SDL_Surface *screen = NULL;
#ifdef SAVE_GAME_SCREENSHOT
SDL_Surface* lastGameSurface = NULL;
#endif
SDL_Surface* screenBuffer = NULL;
unsigned int screenPitch;
unsigned int bufferPitch;
#if SDL_MAJOR_VERSION == 2
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *texture;
#if defined(SCALE2X)
SDL_Texture* upscaledTexture;
#endif
#endif
int scaleFactor;
boolean screenfaded;
#ifndef SEGA_SATURN
unsigned bordercolor;
unsigned int *ylookup;
SDL_Color palette1[256], palette2[256];
#endif
SDL_Color curpal[256];
static uintptr_t rndbits_y;
static uintptr_t rndmask;
#define CASSERT(x) extern int ASSERT_COMPILE[((x) != 0) * 2 - 1];
#ifdef SEGA_SATURN
#define WRGB(r, g, b) {(r)*255/63, (g)*255/63, 0x100(b)*255/63, 0}
#else
#define WRGB(r, g, b) {(r)*255/63, (g)*255/63, (b)*255/63, 0}
#endif
SDL_Color gamepal[] =
{
#ifdef HEADER
#ifdef SPEAR
#include "sodpal.inc"
#else
#include "wolfpal.inc"
#endif
#else
#ifdef SPEAR
WRGB(0, 0, 0),WRGB(0, 0, 42),WRGB(0, 42, 0),WRGB(0, 42, 42),WRGB(42, 0, 0),
WRGB(42, 0, 42),WRGB(42, 21, 0),WRGB(42, 42, 42),WRGB(21, 21, 21),WRGB(21, 21, 63),
WRGB(21, 63, 21),WRGB(21, 63, 63),WRGB(63, 21, 21),WRGB(63, 21, 63),WRGB(63, 63, 21),
WRGB(63, 63, 63),WRGB(59, 59, 59),WRGB(55, 55, 55),WRGB(52, 52, 52),WRGB(48, 48, 48),
WRGB(45, 45, 45),WRGB(42, 42, 42),WRGB(38, 38, 38),WRGB(35, 35, 35),WRGB(31, 31, 31),
WRGB(28, 28, 28),WRGB(25, 25, 25),WRGB(21, 21, 21),WRGB(18, 18, 18),WRGB(14, 14, 14),
WRGB(11, 11, 11),WRGB(8, 8, 8),WRGB(63, 0, 0),WRGB(59, 0, 0),WRGB(56, 0, 0),
WRGB(53, 0, 0),WRGB(50, 0, 0),WRGB(47, 0, 0),WRGB(44, 0, 0),WRGB(41, 0, 0),
WRGB(38, 0, 0),WRGB(34, 0, 0),WRGB(31, 0, 0),WRGB(28, 0, 0),WRGB(25, 0, 0),
WRGB(22, 0, 0),WRGB(19, 0, 0),WRGB(16, 0, 0),WRGB(63, 54, 54),WRGB(63, 46, 46),
WRGB(63, 39, 39),WRGB(63, 31, 31),WRGB(63, 23, 23),WRGB(63, 16, 16),WRGB(63, 8, 8),
WRGB(63, 0, 0),WRGB(63, 42, 23),WRGB(63, 38, 16),WRGB(63, 34, 8),WRGB(63, 30, 0),
WRGB(57, 27, 0),WRGB(51, 24, 0),WRGB(45, 21, 0),WRGB(39, 19, 0),WRGB(63, 63, 54),
WRGB(63, 63, 46),WRGB(63, 63, 39),WRGB(63, 63, 31),WRGB(63, 62, 23),WRGB(63, 61, 16),
WRGB(63, 61, 8),WRGB(63, 61, 0),WRGB(57, 54, 0),WRGB(51, 49, 0),WRGB(45, 43, 0),
WRGB(39, 39, 0),WRGB(33, 33, 0),WRGB(28, 27, 0),WRGB(22, 21, 0),WRGB(16, 16, 0),
WRGB(52, 63, 23),WRGB(49, 63, 16),WRGB(45, 63, 8),WRGB(40, 63, 0),WRGB(36, 57, 0),
WRGB(32, 51, 0),WRGB(29, 45, 0),WRGB(24, 39, 0),WRGB(54, 63, 54),WRGB(47, 63, 46),
WRGB(39, 63, 39),WRGB(32, 63, 31),WRGB(24, 63, 23),WRGB(16, 63, 16),WRGB(8, 63, 8),
WRGB(0, 63, 0),WRGB(0, 63, 0),WRGB(0, 59, 0),WRGB(0, 56, 0),WRGB(0, 53, 0),
WRGB(1, 50, 0),WRGB(1, 47, 0),WRGB(1, 44, 0),WRGB(1, 41, 0),WRGB(1, 38, 0),
WRGB(1, 34, 0),WRGB(1, 31, 0),WRGB(1, 28, 0),WRGB(1, 25, 0),WRGB(1, 22, 0),
WRGB(1, 19, 0),WRGB(1, 16, 0),WRGB(54, 63, 63),WRGB(46, 63, 63),WRGB(39, 63, 63),
WRGB(31, 63, 62),WRGB(23, 63, 63),WRGB(16, 63, 63),WRGB(8, 63, 63),WRGB(0, 63, 63),
WRGB(0, 57, 57),WRGB(0, 51, 51),WRGB(0, 45, 45),WRGB(0, 39, 39),WRGB(0, 33, 33),
WRGB(0, 28, 28),WRGB(0, 22, 22),WRGB(0, 16, 16),WRGB(23, 47, 63),WRGB(16, 44, 63),
WRGB(8, 42, 63),WRGB(0, 39, 63),WRGB(0, 35, 57),WRGB(0, 31, 51),WRGB(0, 27, 45),
WRGB(0, 23, 39),WRGB(54, 54, 63),WRGB(46, 47, 63),WRGB(39, 39, 63),WRGB(31, 32, 63),
WRGB(23, 24, 63),WRGB(16, 16, 63),WRGB(8, 9, 63),WRGB(0, 1, 63),WRGB(0, 0, 63),
WRGB(0, 0, 59),WRGB(0, 0, 56),WRGB(0, 0, 53),WRGB(0, 0, 50),WRGB(0, 0, 47),
WRGB(0, 0, 44),WRGB(0, 0, 41),WRGB(0, 0, 38),WRGB(0, 0, 34),WRGB(0, 0, 31),
WRGB(0, 0, 28),WRGB(0, 0, 25),WRGB(0, 0, 22),WRGB(0, 0, 19),WRGB(0, 0, 16),
WRGB(10, 10, 10),WRGB(63, 56, 13),WRGB(63, 53, 9),WRGB(63, 51, 6),WRGB(63, 48, 2),
WRGB(63, 45, 0),WRGB(0, 14, 0),WRGB(0, 10, 0),WRGB(38, 0, 57),WRGB(32, 0, 51),
WRGB(29, 0, 45),WRGB(24, 0, 39),WRGB(20, 0, 33),WRGB(17, 0, 28),WRGB(13, 0, 22),
WRGB(10, 0, 16),WRGB(63, 54, 63),WRGB(63, 46, 63),WRGB(63, 39, 63),WRGB(63, 31, 63),
WRGB(63, 23, 63),WRGB(63, 16, 63),WRGB(63, 8, 63),WRGB(63, 0, 63),WRGB(56, 0, 57),
WRGB(50, 0, 51),WRGB(45, 0, 45),WRGB(39, 0, 39),WRGB(33, 0, 33),WRGB(27, 0, 28),
WRGB(22, 0, 22),WRGB(16, 0, 16),WRGB(63, 58, 55),WRGB(63, 56, 52),WRGB(63, 54, 49),
WRGB(63, 53, 47),WRGB(63, 51, 44),WRGB(63, 49, 41),WRGB(63, 47, 39),WRGB(63, 46, 36),
WRGB(63, 44, 32),WRGB(63, 41, 28),WRGB(63, 39, 24),WRGB(60, 37, 23),WRGB(58, 35, 22),
WRGB(55, 34, 21),WRGB(52, 32, 20),WRGB(50, 31, 19),WRGB(47, 30, 18),WRGB(45, 28, 17),
WRGB(42, 26, 16),WRGB(40, 25, 15),WRGB(39, 24, 14),WRGB(36, 23, 13),WRGB(34, 22, 12),
WRGB(32, 20, 11),WRGB(29, 19, 10),WRGB(27, 18, 9),WRGB(23, 16, 8),WRGB(21, 15, 7),
WRGB(18, 14, 6),WRGB(16, 12, 6),WRGB(14, 11, 5),WRGB(10, 8, 3),WRGB(24, 0, 25),
WRGB(0, 25, 25),WRGB(0, 24, 24),WRGB(0, 0, 7),WRGB(0, 0, 11),WRGB(12, 9, 4),
WRGB(18, 0, 18),WRGB(20, 0, 20),WRGB(0, 0, 13),WRGB(7, 7, 7),WRGB(19, 19, 19),
WRGB(23, 23, 23),WRGB(16, 16, 16),WRGB(12, 12, 12),WRGB(13, 13, 13),WRGB(54, 61, 61),
WRGB(46, 58, 58),WRGB(39, 55, 55),WRGB(29, 50, 50),WRGB(18, 48, 48),WRGB(8, 45, 45),
WRGB(8, 44, 44),WRGB(0, 41, 41),WRGB(0, 38, 38),WRGB(0, 35, 35),WRGB(0, 33, 33),
WRGB(0, 31, 31),WRGB(0, 30, 30),WRGB(0, 29, 29),WRGB(0, 28, 28),WRGB(0, 27, 27),
WRGB(38, 0, 34)
#else
WRGB(0, 0, 0),WRGB(0, 0, 42),WRGB(0, 42, 0),WRGB(0, 42, 42),WRGB(42, 0, 0),
WRGB(42, 0, 42),WRGB(42, 21, 0),WRGB(42, 42, 42),WRGB(21, 21, 21),WRGB(21, 21, 63),
WRGB(21, 63, 21),WRGB(21, 63, 63),WRGB(63, 21, 21),WRGB(63, 21, 63),WRGB(63, 63, 21),
WRGB(63, 63, 63),WRGB(59, 59, 59),WRGB(55, 55, 55),WRGB(52, 52, 52),WRGB(48, 48, 48),
WRGB(45, 45, 45),WRGB(42, 42, 42),WRGB(38, 38, 38),WRGB(35, 35, 35),WRGB(31, 31, 31),
WRGB(28, 28, 28),WRGB(25, 25, 25),WRGB(21, 21, 21),WRGB(18, 18, 18),WRGB(14, 14, 14),
WRGB(11, 11, 11),WRGB(8, 8, 8),WRGB(63, 0, 0),WRGB(59, 0, 0),WRGB(56, 0, 0),
WRGB(53, 0, 0),WRGB(50, 0, 0),WRGB(47, 0, 0),WRGB(44, 0, 0),WRGB(41, 0, 0),
WRGB(38, 0, 0),WRGB(34, 0, 0),WRGB(31, 0, 0),WRGB(28, 0, 0),WRGB(25, 0, 0),
WRGB(22, 0, 0),WRGB(19, 0, 0),WRGB(16, 0, 0),WRGB(63, 54, 54),WRGB(63, 46, 46),
WRGB(63, 39, 39),WRGB(63, 31, 31),WRGB(63, 23, 23),WRGB(63, 16, 16),WRGB(63, 8, 8),
WRGB(63, 0, 0),WRGB(63, 42, 23),WRGB(63, 38, 16),WRGB(63, 34, 8),WRGB(63, 30, 0),
WRGB(57, 27, 0),WRGB(51, 24, 0),WRGB(45, 21, 0),WRGB(39, 19, 0),WRGB(63, 63, 54),
WRGB(63, 63, 46),WRGB(63, 63, 39),WRGB(63, 63, 31),WRGB(63, 62, 23),WRGB(63, 61, 16),
WRGB(63, 61, 8),WRGB(63, 61, 0),WRGB(57, 54, 0),WRGB(51, 49, 0),WRGB(45, 43, 0),
WRGB(39, 39, 0),WRGB(33, 33, 0),WRGB(28, 27, 0),WRGB(22, 21, 0),WRGB(16, 16, 0),
WRGB(52, 63, 23),WRGB(49, 63, 16),WRGB(45, 63, 8),WRGB(40, 63, 0),WRGB(36, 57, 0),
WRGB(32, 51, 0),WRGB(29, 45, 0),WRGB(24, 39, 0),WRGB(54, 63, 54),WRGB(47, 63, 46),
WRGB(39, 63, 39),WRGB(32, 63, 31),WRGB(24, 63, 23),WRGB(16, 63, 16),WRGB(8, 63, 8),
WRGB(0, 63, 0),WRGB(0, 63, 0),WRGB(0, 59, 0),WRGB(0, 56, 0),WRGB(0, 53, 0),
WRGB(1, 50, 0),WRGB(1, 47, 0),WRGB(1, 44, 0),WRGB(1, 41, 0),WRGB(1, 38, 0),
WRGB(1, 34, 0),WRGB(1, 31, 0),WRGB(1, 28, 0),WRGB(1, 25, 0),WRGB(1, 22, 0),
WRGB(1, 19, 0),WRGB(1, 16, 0),WRGB(54, 63, 63),WRGB(46, 63, 63),WRGB(39, 63, 63),
WRGB(31, 63, 62),WRGB(23, 63, 63),WRGB(16, 63, 63),WRGB(8, 63, 63),WRGB(0, 63, 63),
WRGB(0, 57, 57),WRGB(0, 51, 51),WRGB(0, 45, 45),WRGB(0, 39, 39),WRGB(0, 33, 33),
WRGB(0, 28, 28),WRGB(0, 22, 22),WRGB(0, 16, 16),WRGB(23, 47, 63),WRGB(16, 44, 63),
WRGB(8, 42, 63),WRGB(0, 39, 63),WRGB(0, 35, 57),WRGB(0, 31, 51),WRGB(0, 27, 45),
WRGB(0, 23, 39),WRGB(54, 54, 63),WRGB(46, 47, 63),WRGB(39, 39, 63),WRGB(31, 32, 63),
WRGB(23, 24, 63),WRGB(16, 16, 63),WRGB(8, 9, 63),WRGB(0, 1, 63),WRGB(0, 0, 63),
WRGB(0, 0, 59),WRGB(0, 0, 56),WRGB(0, 0, 53),WRGB(0, 0, 50),WRGB(0, 0, 47),
WRGB(0, 0, 44),WRGB(0, 0, 41),WRGB(0, 0, 38),WRGB(0, 0, 34),WRGB(0, 0, 31),
WRGB(0, 0, 28),WRGB(0, 0, 25),WRGB(0, 0, 22),WRGB(0, 0, 19),WRGB(0, 0, 16),
WRGB(10, 10, 10),WRGB(63, 56, 13),WRGB(63, 53, 9),WRGB(63, 51, 6),WRGB(63, 48, 2),
WRGB(63, 45, 0),WRGB(45, 8, 63),WRGB(42, 0, 63),WRGB(38, 0, 57),WRGB(32, 0, 51),
WRGB(29, 0, 45),WRGB(24, 0, 39),WRGB(20, 0, 33),WRGB(17, 0, 28),WRGB(13, 0, 22),
WRGB(10, 0, 16),WRGB(63, 54, 63),WRGB(63, 46, 63),WRGB(63, 39, 63),WRGB(63, 31, 63),
WRGB(63, 23, 63),WRGB(63, 16, 63),WRGB(63, 8, 63),WRGB(63, 0, 63),WRGB(56, 0, 57),
WRGB(50, 0, 51),WRGB(45, 0, 45),WRGB(39, 0, 39),WRGB(33, 0, 33),WRGB(27, 0, 28),
WRGB(22, 0, 22),WRGB(16, 0, 16),WRGB(63, 58, 55),WRGB(63, 56, 52),WRGB(63, 54, 49),
WRGB(63, 53, 47),WRGB(63, 51, 44),WRGB(63, 49, 41),WRGB(63, 47, 39),WRGB(63, 46, 36),
WRGB(63, 44, 32),WRGB(63, 41, 28),WRGB(63, 39, 24),WRGB(60, 37, 23),WRGB(58, 35, 22),
WRGB(55, 34, 21),WRGB(52, 32, 20),WRGB(50, 31, 19),WRGB(47, 30, 18),WRGB(45, 28, 17),
WRGB(42, 26, 16),WRGB(40, 25, 15),WRGB(39, 24, 14),WRGB(36, 23, 13),WRGB(34, 22, 12),
WRGB(32, 20, 11),WRGB(29, 19, 10),WRGB(27, 18, 9),WRGB(23, 16, 8),WRGB(21, 15, 7),
WRGB(18, 14, 6),WRGB(16, 12, 6),WRGB(14, 11, 5),WRGB(10, 8, 3),WRGB(24, 0, 25),
WRGB(0, 25, 25),WRGB(0, 24, 24),WRGB(0, 0, 7),WRGB(0, 0, 11),WRGB(12, 9, 4),
WRGB(18, 0, 18),WRGB(20, 0, 20),WRGB(0, 0, 13),WRGB(7, 7, 7),WRGB(19, 19, 19),
WRGB(23, 23, 23),WRGB(16, 16, 16),WRGB(12, 12, 12),WRGB(13, 13, 13),WRGB(54, 61, 61),
WRGB(46, 58, 58),WRGB(39, 55, 55),WRGB(29, 50, 50),WRGB(18, 48, 48),WRGB(8, 45, 45),
WRGB(8, 44, 44),WRGB(0, 41, 41),WRGB(0, 38, 38),WRGB(0, 35, 35),WRGB(0, 33, 33),
WRGB(0, 31, 31),WRGB(0, 30, 30),WRGB(0, 29, 29),WRGB(0, 28, 28),WRGB(0, 27, 27),
WRGB(38, 0, 34)
#endif
#endif
};
/* XOR masks for the pseudo-random number sequence starting with n=17 bits */
static const uintptr_t rndmasks[] = {
/* n XNOR from (starting at 1, not 0 as usual) */
0x00012000, /* 17 17,14 */
0x00020400, /* 18 18,11 */
0x00040023, /* 19 19,6,2,1 */
0x00090000, /* 20 20,17 */
0x00140000, /* 21 21,19 */
0x00300000, /* 22 22,21 */
0x00420000, /* 23 23,18 */
0x00e10000, /* 24 24,23,22,17 */
0x01200000, /* 25 25,22 (this is enough for 8191x4095) */
};
#ifndef SEGA_SATURN
CASSERT(lengthof(gamepal) == 256)
#endif
/* ========================================================================== */
/* Returns the number of bits needed to represent the given value */
static uintptr_t log2_ceil(unsigned int x)
{
int n = 0;
unsigned int v = 1;
while (v < x)
{
n++;
v <<= 1;
}
return n;
}
/*
=======================
=
= VL_Startup
=
=======================
*/
void VL_Startup()
{
uintptr_t rndbits_x = log2_ceil(screenWidth);
uintptr_t rndbits;
rndbits_y = log2_ceil(screenHeight);
rndbits = rndbits_x + rndbits_y;
if (rndbits < 17)
rndbits = 17; /* no problem, just a bit slower */
else if (rndbits > 25)
rndbits = 25; /* fizzle fade will not fill whole screen */
rndmask = rndmasks[rndbits - 17];
}
void VWL_MeasureString(const char* string, unsigned short* width, unsigned short* height, fontstruct* font)
{
#ifdef SEGA_SATURN
* height = SWAP_BYTES_16(font->height);
#else
* height = font->height;
#endif
for (*width = 0; *string; string++)
*width += font->width[*((unsigned char*)string)]; /* proportional width */
}
void VL_MeasurePropString(const char* string, unsigned short* width, unsigned short* height)
{
VWL_MeasureString(string, width, height, (fontstruct*)grsegs[STARTFONT + fontnumber]);
}
/*
=======================
=
= VL_Shutdown
=
=======================
*/
void VL_Shutdown (void)
{
SDL_FreeSurface (screenBuffer);
#if SDL_MAJOR_VERSION == 2
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_DestroyTexture(texture);
#endif
free (ylookup);
free (pixelangle);
free (wallheight);
if (use_floorceilingtex || use_cloudsky)
{
free(spanstart);
spanstart = NULL;
}
screenBuffer = NULL;
ylookup = NULL;
pixelangle = NULL;
wallheight = NULL;
}
/*
===================
=
= FizzleFade
=
= returns true if aborted
=
= It uses maximum-length Linear Feedback Shift Registers (LFSR) counters.
= You can find a list of them with lengths from 3 to 168 at:
= http://www.xilinx.com/support/documentation/application_notes/xapp052.pdf
= Many thanks to Xilinx for this list!!!
=
===================
*/
boolean FizzleFade(SDL_Surface* source, int x1, int y1,
uintptr_t width, uintptr_t height, uintptr_t frames, boolean abortable)
{
#ifdef SEGA_SATURN
#if 1
unsigned x, y, p, frame, pixperframe;
int rndval, lastrndval;
int first = 1;
unsigned char* srcptr;
unsigned char color;
unsigned char* destptr;
int i;
SDL_Rect rect;
lastrndval = 0;
pixperframe = width * height / frames;
IN_StartAck();
frame = GetTimeCount();
srcptr = (unsigned char*)source->pixels;
color = (srcptr[x1 + (y1 * width)] ? 0 : 4);
rect = { x1,y1,width,height };
if (curSurface == screen)
{
curSurface = screenBuffer;
VL_BarScaledCoord(x1, y1, width, height, srcptr[x1 + (y1 * width)]); /* vbt ajout */
DrawStatusBar(); /* vbt : ajout */
}
else
{
VL_BarScaledCoord(x1, y1, width, height, color); /* vbt ajout */
DrawStatusBar(); /* vbt : ajout */
curSurface = screen;
}
do
{
if (abortable && IN_CheckAck())
{
#ifndef USE_SPRITES
/* SDL_BlitSurface(screenBuffer, NULL, screen, NULL);
** SDL_UpdateRect(screen, 0, 0, 0, 0);
*/
#endif
/* xxx VGAClearScreen(); /* vbt : maj du fond d'�cran * /
** curSurface = source;
*/
VL_BarScaledCoord(x1, y1, width, height, color); /* vbt ajout */
return true;
}
destptr = (unsigned char*)dest->pixels;
rndval = lastrndval;
/*
** When using double buffering, we have to copy the pixels of the last AND the current frame.
** Only for the first frame, there is no "last frame"
*/
for (i = first; i < 2; i++)
{
for (p = 0; p < pixperframe; p++)
{
/*
** seperate random value into x/y pair
*/
x = rndval >> rndbits_y;
y = rndval & ((1 << rndbits_y) - 1);
/*
** advance to next random element
*/
rndval = (rndval >> 1) ^ (rndval & 1 ? 0 : rndmask);
if (x >= width || y >= height)
{
if (rndval == 0) /* entire sequence has been completed */
goto finished;
p--;
continue;
}
/*
** copy one pixel
*/
*(destptr + (y1 + y) * dest->pitch + x1 + x) = *(srcptr + (y1 + y) * source->pitch + x1 + x);
if (rndval == 0) /* entire sequence has been completed */
goto finished;
}
if (!i || first) lastrndval = rndval;
}
first = 0;
SDL_BlitSurface(dest, &rect, source, &rect);
frame++;
Delay(frame - GetTimeCount()); /* don't go too fast */
} while (1);
finished:
SDL_BlitSurface(dest, &rect, source, &rect);
return false;
#endif
#else
uintptr_t x, y, p, pixperframe, frame;
uintptr_t rndval = 0, lastrndval = 0;
intptr_t i, first = 1;
unsigned char* srcptr;
pixperframe = width * height / frames;
IN_StartAck();
frame = GetTimeCount();
srcptr = VL_LockSurface(source);
if (srcptr == NULL) return false;
do
{
unsigned char* destptr;
IN_ProcessEvents();
if (abortable && IN_CheckAck())
{
VL_UnlockSurface(source);
VL_UpdateScreen(source);
return true;
}
destptr = VL_LockSurface(screen);
if (destptr != NULL)
{
rndval = lastrndval;
/* When using double buffering, we have to copy the pixels of the last AND the current frame. */
/* Only for the first frame, there is no "last frame" */
for (i = first; i < 2; i++)
{
for (p = 0; p < pixperframe; p++)
{
/*
** seperate random value into x/y pair
*/
x = rndval >> rndbits_y;
y = rndval & ((1 << rndbits_y) - 1);
/*
** advance to next random element
*/
rndval = (rndval >> 1) ^ (rndval & 1 ? 0 : rndmask);
if (x >= width || y >= height)
{
if (rndval == 0) /* entire sequence has been completed */
goto finished;
p--;
continue;
}
/*
** copy one pixel
*/
if (screenBits == 8)
{
*(destptr + (y1 + y) * screen->pitch + x1 + x)
= *(srcptr + (y1 + y) * source->pitch + x1 + x);
}
else
{
unsigned char col = *(srcptr + (y1 + y) * source->pitch + x1 + x);
unsigned int fullcol = SDL_MapRGB(screen->format, curpal[col].r, curpal[col].g, curpal[col].b);
memcpy(destptr + (y1 + y) * screen->pitch + (x1 + x) * screen->format->BytesPerPixel,
&fullcol, screen->format->BytesPerPixel);
}
if (rndval == 0) /* entire sequence has been completed */
goto finished;
}
if (!i || first) lastrndval = rndval;
}
/* If there is no double buffering, we always use the "first frame" case */
if (usedoublebuffering) first = 0;
VL_UnlockSurface(screen);
VL_UpdateScreen(screen);
}
else
{
/* No surface, so only enhance rndval */
for (i = first; i < 2; i++)
{
for (p = 0; p < pixperframe; p++)
{
rndval = (rndval >> 1) ^ (rndval & 1 ? 0 : rndmask);
if (rndval == 0)
goto finished;
}
}
}
frame++;
Delay((int)frame - (int)GetTimeCount()); /* don't go too fast */
} while (1);
finished:
VL_UnlockSurface(source);
VL_UnlockSurface(screen);
VL_UpdateScreen(source);
return false;
#endif
}
/*
=======================
=
= VL_SetVGAPlaneMode
=
=======================
*/
void VL_SetVGAPlaneMode (void)
{
unsigned int i;
#if SDL_MAJOR_VERSION == 2
unsigned int a,r,g,b;
#endif
#ifdef SPEAR
const char* title = "Spear of Destiny";
#else
const char* title = "Wolfenstein 3D";
#endif
#if SDL_MAJOR_VERSION == 1
#ifdef SEGA_SATURN
if (screenBits == -1)
{
const SDL_VideoInfo* vidInfo = SDL_GetVideoInfo();
screenBits = vidInfo->vfmt->BitsPerPixel;
}
if (screen == NULL)
{
screen = SDL_SetVideoMode(screenWidth, screenHeight, screenBits,
SDL_SWSURFACE | (screenBits == 8 ? SDL_HWPALETTE : 0));
}
if (!screen)
{
/*
** printf("Unable to set %ix%ix%i video mode: %s\n", screenWidth,
** screenHeight, screenBits, SDL_GetError());
*/
SYS_Exit(1);
}
if (screenBuffer == NULL)
{
screenBuffer = SDL_CreateRGBSurface(SDL_SWSURFACE, screenWidth, screenHeight, 8, 0, 0, 0, 0);
if (!screenBuffer)
{
/* printf("Unable to create screen buffer surface: %s\n", SDL_GetError()); */
SYS_Exit(1);
}
/*
** SDL_ShowCursor(SDL_DISABLE);
** curSurface = screenBuffer;
** curPitch = screenBuffer->pitch;
*/
}
SDL_SetColors(screen, gamepal, 0, 256);
memcpyl(curpal, gamepal, sizeof(SDL_Color) * 256);
scaleFactor = screenWidth / SATURN_WIDTH;
if (screenHeight / 200 < scaleFactor) scaleFactor = screenHeight / 200;
if (pixelangle == NULL) SafeMalloc(pixelangle) = (short*)malloc(screenWidth * sizeof(short));
#else
#ifdef CRT
/*
** Fab's CRT Hack
** Adjust height so the screen is 4:3 aspect ratio
*/
screenHeight = screenWidth * 3.0 / 4.0;
#endif
SDL_WM_SetCaption(title, NULL);
if (screenBits == -1)
{
const SDL_VideoInfo *vidInfo = SDL_GetVideoInfo();
screenBits = vidInfo->vfmt->BitsPerPixel;
}
#if N3DS
screen = SDL_SetVideoMode(screenWidth, screenHeight, 32, SDL_TOPSCR | SDL_CONSOLEBOTTOM | SDL_DOUBLEBUF);
#else
screen = SDL_SetVideoMode(screenWidth, screenHeight, screenBits,
(usedoublebuffering ? SDL_HWSURFACE | SDL_DOUBLEBUF : 0) | (screenBits == 8 ? SDL_HWPALETTE : 0)
| (fullscreen ? SDL_FULLSCREEN : 0) | (SDL_OPENGL ? true : false));
#endif
if(!screen)
{
printf("Unable to set %ux%ux%ux video mode: %s\n", screenWidth,
screenHeight, screenBits, SDL_GetError());
exit(1);
}
if((screen->flags & SDL_DOUBLEBUF) != SDL_DOUBLEBUF)
usedoublebuffering = false;
SDL_SetColors(screen, gamepal, 0, 256);
memcpy(curpal, gamepal, sizeof(SDL_Color) * 256);
#ifdef CRT
/* Fab's and André´s CRT Hack */
CRT_Init(screen);
#endif
screenBuffer = SDL_CreateRGBSurface(SDL_SWSURFACE, screenWidth,
screenHeight, 8, 0, 0, 0, 0);
if(!screenBuffer)
{
printf("Unable to create screen buffer surface: %s\n", SDL_GetError());
exit(1);
}
SDL_SetColors(screenBuffer, gamepal, 0, 256);
#endif
#elif SDL_MAJOR_VERSION == 2
#ifdef CRT
/*
** Fab's CRT Hack:
** Adjust height so the screen is 4:3 aspect ratio
*/
screenHeight = screenWidth * 3 / 4;
#endif
#if defined(SCALE2X)
window = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, scaledScreenWidth, scaledScreenHeight,
(fullscreen ? SDL_WINDOW_FULLSCREEN : 0) | (SDL_WINDOW_OPENGL ? true : false));
#else
window = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, screenWidth, screenHeight,
(fullscreen ? SDL_WINDOW_FULLSCREEN : 0) | (SDL_WINDOW_OPENGL ? true : false));
#endif
SDL_PixelFormatEnumToMasks (SDL_PIXELFORMAT_ARGB8888, (int*)&screenBits, &r, &g, &b, &a);
screen = SDL_CreateRGBSurface(0,screenWidth,screenHeight,screenBits,r,g,b,a);
if(!screen)
{
#if defined(SCALE2X)
printf("Unable to set %ux%ux%i video mode: %s\n", scaledScreenWidth, scaledScreenHeight, screenBits, SDL_GetError());
#else
printf("Unable to set %ux%ux%i video mode: %s\n", screenWidth, screenHeight, screenBits, SDL_GetError());
#endif
exit(1);
}
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0");
SDL_SetPaletteColors(screen->format->palette, gamepal, 0, 256);
memcpy(curpal, gamepal, sizeof(SDL_Color) * 256);
#ifdef CRT
/* Fab's and André´s CRT Hack */
CRT_Init(screen);
#endif
screenBuffer = SDL_CreateRGBSurface(0, screenWidth, screenHeight,
8, 0, 0, 0, 0);
if(!screenBuffer)
{
printf("Unable to create screen buffer surface: %s\n", SDL_GetError());
exit(1);
}
SDL_SetPaletteColors(screenBuffer->format->palette, gamepal, 0, 256);
#if defined(SCALE2X)
/* Create the intermediate texture that we render the screen surface into. */
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
#endif
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING, screenWidth, screenHeight);
if (!texture)
{
printf("Unable to create screen texture: %s\n", SDL_GetError());
exit(1);
}
/*
** Create the up-scaled texture that we render to the window. We use 'nearest' scaling here because depending on the
** window size, the texture may need to be scaled by a non-integer factor.
*/
#if defined(SCALE2X)
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl");
upscaledTexture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_TARGET, scaledScreenWidth, scaledScreenHeight);
if (!upscaledTexture)
{
printf("Unable to create up-scaled texture: %s\n", SDL_GetError());
exit(1);
}
#endif
#endif
SDL_ShowCursor(SDL_DISABLE);
screenPitch = screen->pitch;
bufferPitch = screenBuffer->pitch;
scaleFactor = screenWidth/320;
if(screenHeight/200 < (unsigned int)scaleFactor) scaleFactor = screenHeight/200;
ylookup = wlcast_conversion(unsigned int*, SafeMalloc(screenHeight * sizeof(*ylookup)));
pixelangle = wlcast_conversion(short*, SafeMalloc(screenWidth * sizeof(*pixelangle)));
wallheight = wlcast_conversion(short*, SafeMalloc(screenWidth * sizeof(*wallheight)));
if (use_floorceilingtex || use_cloudsky)
{
spanstart = wlcast_conversion(short*, SafeMalloc((screenHeight / 2) * sizeof(*spanstart)));
}
for (i = 0; i < screenHeight; i++)
ylookup[i] = i * bufferPitch;
}
#if SDL_MAJOR_VERSION == 2
void VL_RenderTextures()
{
SDL_UpdateTexture(texture, NULL, screen->pixels, screenWidth * sizeof(unsigned int));
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
}
#endif
#if !defined(SEGA_SATURN) && !defined(USE_SPRITE)
void VL_UpdateScreen(SDL_Surface* surface)
{
SDL_BlitSurface(surface, NULL, screen, NULL);
#if SDL_MAJOR_VERSION == 1
SDL_Flip(screen);
#elif SDL_MAJOR_VERSION == 2
VL_RenderTextures();
#endif
}
#endif
/*
=============================================================================
PALETTE OPS
To avoid snow, do a WaitVBL BEFORE calling these
=============================================================================
*/
/*
=================
=
= VL_ConvertPalette
=
=================
*/
void VL_ConvertPalette(unsigned char *srcpal, SDL_Color *destpal, int numColors)
{
int i;
for(i=0; i<numColors; i++)
{
#if N3DS
destpal[i].r = *srcpal++;
destpal[i].g = *srcpal++;
destpal[i].b = *srcpal++;
#else
destpal[i].r = *srcpal++ * 255 / 63;
destpal[i].g = *srcpal++ * 255 / 63;
destpal[i].b = *srcpal++ * 255 / 63;
#endif
}
}
/*
=================
=
= VL_FillPalette
=
=================
*/
void VL_FillPalette (unsigned char red, unsigned char green, unsigned char blue)
{
int i;
SDL_Color pal[256];
for(i=0; i<256; i++)
{
pal[i].r = red;
pal[i].g = green;
pal[i].b = blue;
}
VL_SetPalette(pal, true);
}
/* =========================================================================== */
/*
=================
=
= VL_SetColor
=
=================
*/
void VL_SetColor(int color, unsigned char red, unsigned char green, unsigned char blue)
{
#ifdef SEGA_SATURN
memcpyl(curpal, palette, sizeof(SDL_Color) * 256);
#else
SDL_Color col =
{
red,
green,
blue
};
curpal[color] = col;
if(screenBits == 8)
#if SDL_MAJOR_VERSION == 1
SDL_SetPalette(screen, SDL_PHYSPAL, &col, color, 1);
else
{
SDL_SetPalette(screenBuffer, SDL_LOGPAL, &col, color, 1);
#ifdef CRT
CRT_Init(screen);
CRT_DAC();
#else
VL_UpdateScreen(screenBuffer);
#endif
#elif SDL_MAJOR_VERSION == 2
SDL_SetPaletteColors(screen->format->palette, &col, color, 1);
else
{
SDL_SetPaletteColors(screenBuffer->format->palette, &col, color, 1);
#ifdef CRT
CRT_Init(screen);
CRT_DAC();
#else
VL_UpdateScreen(screenBuffer);
#endif
#endif
#endif
}
}
/* =========================================================================== */
/* =========================================================================== */
/*
=================
=
= VL_SetPalette
=
=================
*/
void VL_SetPalette(SDL_Color* palette, boolean forceupdate)
{
memcpy(curpal, palette, sizeof(SDL_Color) * 256);
if(screenBits == 8)
#if SDL_MAJOR_VERSION == 1
SDL_SetPalette(screen, SDL_PHYSPAL, palette, 0, 256);
else
{
SDL_SetPalette(screenBuffer, SDL_LOGPAL, palette, 0, 256);
if(forceupdate)
{
VL_UpdateScreen(screenBuffer);
#else
SDL_SetPaletteColors(screen->format->palette, palette, 0, 256);
else
{
SDL_SetPaletteColors(screenBuffer->format->palette, palette, 0, 256);
if (forceupdate)
{
VL_UpdateScreen(screenBuffer);
#endif
}
}
}
/* =========================================================================== */
/*
=================
=
= VL_GetPalette
=
=================
*/
void VL_GetPalette (SDL_Color *palette)
{
memcpy(palette, curpal, sizeof(SDL_Color) * 256);
}
/* =========================================================================== */
/*
=================
=
= VL_FadeOut
=
= Fades the current palette to the given color in the given number of steps
=
=================
*/
void VL_FadeOut(int start, int end, unsigned char red, unsigned char green, unsigned char blue, int steps)
{
int i,j,orig,delta;
red = red * 255 / 63;
green = green * 255 / 63;
blue = blue * 255 / 63;
VL_WaitVBL(1);
VL_GetPalette(palette1);
memcpy(palette2, palette1, sizeof(SDL_Color) * 256);
/*
** fade through intermediate frames
*/
for (i=0;i<steps;i++)
{
SDL_Color* origptr, * newptr;
origptr = &palette1[start];
newptr = &palette2[start];
for (j=start;j<=end;j++)
{
orig = origptr->r;
delta = red-orig;