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Adjust model uvs to power of two texture if sprite texture is used

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This commit is contained in:
Hannu Hanhi 2020-07-10 22:54:15 +03:00
parent b442b5a916
commit ad57426713
1 changed files with 45 additions and 10 deletions
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55
src/hardware/hw_md2.c
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@ -1177,6 +1177,34 @@ static UINT8 HWR_GetModelSprite2(md2_t *md2, skin_t *skin, UINT8 spr2, player_t
return spr2;
}
static void adjustTextureCoords(model_t *model, GLPatch_t *gpatch)
{
int i;
for (i = 0; i < model->numMeshes; i++)
{
int j;
mesh_t *mesh = &model->meshes[i];
int numVertices;
float *uvPtr = mesh->uvs;
// i dont know if this is actually possible, just logical conclusion of structure in CreateModelVBOs
if (!mesh->frames && !mesh->tinyframes) return;
if (mesh->frames) // again CreateModelVBO and CreateModelVBOTiny iterate like this so I'm gonna do that too
numVertices = mesh->numTriangles * 3;
else
numVertices = mesh->numVertices;
// fix uvs (texture coordinates) to take into account that the actual texture
// has empty space added until the next power of two
for (j = 0; j < numVertices; j++)
{
*uvPtr++ *= gpatch->max_s;
*uvPtr++ *= gpatch->max_t;
}
}
}
//
// HWR_DrawModel
//
@ -1278,6 +1306,19 @@ boolean HWR_DrawModel(gr_vissprite_t *spr)
sprinfo = &spriteinfo[spr->mobj->sprite];
}
// texture loading before model init, so it knows if sprite graphics are used, which
// means that texture coordinates have to be adjusted
gpatch = md2->grpatch;
if (!gpatch || ((!gpatch->mipmap->grInfo.format || !gpatch->mipmap->downloaded) && !md2->notexturefile))
md2_loadTexture(md2);
gpatch = md2->grpatch; // Load it again, because it isn't being loaded into gpatch after md2_loadtexture...
if ((gpatch && gpatch->mipmap->grInfo.format) // don't load the blend texture if the base texture isn't available
&& (!md2->blendgrpatch
|| ((!((GLPatch_t *)md2->blendgrpatch)->mipmap->grInfo.format || !((GLPatch_t *)md2->blendgrpatch)->mipmap->downloaded)
&& !md2->noblendfile)))
md2_loadBlendTexture(md2);
if (md2->error)
return false; // we already failed loading this before :(
if (!md2->model)
@ -1289,6 +1330,10 @@ boolean HWR_DrawModel(gr_vissprite_t *spr)
if (md2->model)
{
md2_printModelInfo(md2->model);
// if model uses sprite patch as texture, then
// adjust texture coordinates to take power of two textures into account
if (!gpatch || !gpatch->mipmap->grInfo.format)
adjustTextureCoords(md2->model, spr->gpatch);
HWD.pfnCreateModelVBOs(md2->model);
}
else
@ -1306,16 +1351,6 @@ boolean HWR_DrawModel(gr_vissprite_t *spr)
//HWD.pfnSetBlend(blend); // This seems to actually break translucency?
finalscale = md2->scale;
//Hurdler: arf, I don't like that implementation at all... too much crappy
gpatch = md2->grpatch;
if (!gpatch || ((!gpatch->mipmap->grInfo.format || !gpatch->mipmap->downloaded) && !md2->notexturefile))
md2_loadTexture(md2);
gpatch = md2->grpatch; // Load it again, because it isn't being loaded into gpatch after md2_loadtexture...
if ((gpatch && gpatch->mipmap->grInfo.format) // don't load the blend texture if the base texture isn't available
&& (!md2->blendgrpatch
|| ((!((GLPatch_t *)md2->blendgrpatch)->mipmap->grInfo.format || !((GLPatch_t *)md2->blendgrpatch)->mipmap->downloaded)
&& !md2->noblendfile)))
md2_loadBlendTexture(md2);
if (gpatch && gpatch->mipmap->grInfo.format) // else if meant that if a texture couldn't be loaded, it would just end up using something else's texture
{