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Handle masked textures from post-release Half-Life MDL files. (#243)

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Half-Life models did not have these flags, but games/mods starting in 2003 and later (Day of Defeat, Condition Zero etc.) use these for plants, trees, cars and anything else desiring masked textures.
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Marco Cawthorne 2024-03-08 11:45:21 -08:00 committed by GitHub
parent 76e4258ad3
commit 1c5e82bec7
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2 changed files with 43 additions and 0 deletions
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31
engine/gl/gl_hlmdl.c
View file

@ -397,6 +397,11 @@ qboolean QDECL Mod_LoadHLModel (model_t *mod, void *buffer, size_t fsize)
Q_snprintfz(shaders[i].name, sizeof(shaders[i].name), "common/hlmodel_fullbright");
}
}
else if ( (tex[i].flags & HLMDLFL_MASKED) || (tex[i].flags & (HLMDLFL_MASKED | HLMDLFL_ALPHASOLID)))
{
shader = HLSHADER_MASKED;
Q_snprintfz(shaders[i].name, sizeof(shaders[i].name), "common/hlmodel_masked");
}
else if (tex[i].flags & HLMDLFL_CHROME)
{
shader = HLSHADER_CHROME;
@ -549,6 +554,32 @@ qboolean QDECL Mod_LoadHLModel (model_t *mod, void *buffer, size_t fsize)
Q_snprintfz(texname, sizeof(texname), "%s*%i", mod->name, shaders[i].atlasid);
shaders[i].defaulttex.base = Image_GetTexture(texname, "", IF_NOALPHA|IF_NOREPLACE, in, pal, tex[i].w, tex[i].h, TF_8PAL24);
}
else if (tex[i].flags & HLMDLFL_MASKED)
{
int k = 0;
qbyte *in = (qbyte *) texheader + tex[i].offset;
qbyte *pal = (qbyte *) texheader + tex[i].w * tex[i].h + tex[i].offset;
qbyte alphaPal[1024]; /* 256 color 32-bit palette */
for (k = 0; k < 255; k+= 1) {
int p = k * 4;
int x = k * 3;
alphaPal[p + 0] = pal[x + 0];
alphaPal[p + 1] = pal[x + 1];
alphaPal[p + 2] = pal[x + 2];
alphaPal[p + 3] = 255;
}
/* pal index 255 = always transparent ~eukara */
alphaPal[255*4+0] = 0;
alphaPal[255*4+1] = 0;
alphaPal[255*4+2] = 0;
alphaPal[255*4+3] = 0;
shaders[i].atlasid = j++;
Q_snprintfz(texname, sizeof(texname), "%s*%i", mod->name, shaders[i].atlasid);
shaders[i].defaulttex.base = Image_GetTexture(texname, "", IF_NOREPLACE, in, alphaPal, tex[i].w, tex[i].h, TF_8PAL32);
}
}

12
engine/gl/model_hl.h
View file

@ -18,6 +18,8 @@
#define HLMDLFL_FLAT 0x0001
#define HLMDLFL_CHROME 0x0002
#define HLMDLFL_FULLBRIGHT 0x0004
#define HLMDLFL_MASKED 0x0040
#define HLMDLFL_ALPHASOLID 0x0800
#define HLSHADER_FULLBRIGHT \
"{\n" \
@ -37,6 +39,16 @@
"}\n" \
"}\n"
#define HLSHADER_MASKED \
"{\n" \
"program defaultskin#MASK=0.5\n" \
"{\n" \
"map $diffuse\n" \
"rgbgen lightingdiffuse\n" \
"alphaFunc GE128\n" \
"}\n" \
"}\n"
#define HLSHADER_FULLBRIGHTCHROME \
"{\n" \
"program defaultskin#CHROME\n" \