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light: add phong shading debug function

This commit is contained in:
Eric Wasylishen 2015-12-12 20:59:03 -07:00
parent a515a13107
commit fdc1f25276
1 changed files with 33 additions and 0 deletions
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33
light/ltface.c
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@ -1403,6 +1403,39 @@ LightFace_DirtDebug(const lightsurf_t *lightsurf, lightmap_t *lightmaps)
Lightmap_Save(lightmaps, lightsurf, lightmap, 0);
}
/*
* =============
* LightFace_PhongDebug
* =============
*/
static void
LightFace_PhongDebug(const lightsurf_t *lightsurf, lightmap_t *lightmaps)
{
int i;
lightsample_t *sample;
lightmap_t *lightmap;
/* use a style 0 light map */
lightmap = Lightmap_ForStyle(lightmaps, 0, lightsurf->numpoints);
/* Overwrite each point with the normal for that sample... */
sample = lightmap->samples;
for (i = 0; i < lightsurf->numpoints; i++, sample++) {
const vec3_t vec3_one = { 1.0f, 1.0f, 1.0f };
vec3_t normal_as_color;
// scale from [-1..1] to [0..1], then multiply by 255
VectorCopy(lightsurf->normals[i], normal_as_color);
VectorAdd(normal_as_color, vec3_one, normal_as_color);
VectorScale(normal_as_color, 0.5, normal_as_color);
VectorScale(normal_as_color, 255, normal_as_color);
sample->light = 255;
VectorCopy(normal_as_color, sample->color);
}
Lightmap_Save(lightmaps, lightsurf, lightmap, 0);
}
/* Dirtmapping borrowed from q3map2, originally by RaP7oR */
#define DIRT_NUM_ANGLE_STEPS 16