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changed texture update validation to normal CRC

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Forest Hale 2000-09-22 15:08:28 +00:00
parent 5242630d16
commit 1a3eb27f8b
1 changed files with 8 additions and 15 deletions
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21
source/gl_draw.c
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@ -38,6 +38,7 @@
#include "bothdefs.h" // needed by: common.h, net.h, client.h #include "bothdefs.h" // needed by: common.h, net.h, client.h
#include "crc.h" // LordHavoc: for texture update validation
#include "bspfile.h" // needed by: glquake.h #include "bspfile.h" // needed by: glquake.h
#include "vid.h" #include "vid.h"
#include "sys.h" #include "sys.h"
@ -79,9 +80,6 @@ extern byte *draw_chars; // 8*8 graphic characters
qpic_t *draw_disc; qpic_t *draw_disc;
qpic_t *draw_backtile; qpic_t *draw_backtile;
static int ltexcrctable[256]; // cache mismatch checking --KB
static int translate_texture; static int translate_texture;
static int char_texture; static int char_texture;
static int cs_texture; // crosshair texturea static int cs_texture; // crosshair texturea
@ -120,7 +118,7 @@ typedef struct
int width, height; int width, height;
int bytesperpixel; int bytesperpixel;
qboolean mipmap; qboolean mipmap;
int crc; // not really a standard CRC, but it works unsigned short crc; // LordHavoc: CRC for texture validation
} gltexture_t; } gltexture_t;
static gltexture_t gltextures[MAX_GLTEXTURES]; static gltexture_t gltextures[MAX_GLTEXTURES];
@ -1326,16 +1324,11 @@ GL_LoadTexture
*/ */
int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha, int bytesperpixel) int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha, int bytesperpixel)
{ {
int i, s, lcrc; int i, crc;
gltexture_t *glt; gltexture_t *glt;
// LordHavoc's cache check, not a standard crc but it works --KB // LordHavoc: now just using a standard CRC for texture validation
lcrc = 0; crc = CRC_Block(data, width*height*bytesperpixel);
s = width*height*bytesperpixel; // size
for (i = 0; i < 256; i++)
ltexcrctable[i] = i + 1;
for (i = 0; i < s; i++)
lcrc += (ltexcrctable[data[i] & 255]++);
// see if the texture is allready present // see if the texture is allready present
if (identifier[0]) if (identifier[0])
@ -1344,7 +1337,7 @@ int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolea
{ {
if (!strcmp (identifier, glt->identifier)) if (!strcmp (identifier, glt->identifier))
{ {
if (lcrc != glt->crc if (crc != glt->crc
|| width != glt->width || width != glt->width
|| height != glt->height || height != glt->height
|| bytesperpixel != glt->bytesperpixel) || bytesperpixel != glt->bytesperpixel)
@ -1368,7 +1361,7 @@ int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolea
texture_extension_number++; texture_extension_number++;
SetupTexture: SetupTexture:
glt->crc = lcrc; glt->crc = crc;
glt->width = width; glt->width = width;
glt->height = height; glt->height = height;
glt->bytesperpixel = bytesperpixel; glt->bytesperpixel = bytesperpixel;