Urban Terror 4.1 Wallhack - Add r_wallhack and r_md3wh to cvars - R_AddMD3Surfaces in tr_mesh.c - Written in 2012

ts_mesh.c

/*
=================
R_AddMD3Surfaces

=================
*/
void R_AddMD3Surfaces( trRefEntity_t *ent ) {
	
	int				i;
	md3Header_t		*header = NULL;
	md3Surface_t	*surface = NULL;
	md3Shader_t		*md3Shader = NULL;
	shader_t		*shader = NULL;
	int				cull;
	int				lod;
	int				fogNum;
	qboolean		personalModel;

	// don't add third_person objects if not in a portal
	personalModel = (ent->e.renderfx & RF_THIRD_PERSON) && !tr.viewParms.isPortal;

	if ( ent->e.renderfx & RF_WRAP_FRAMES ) {
		ent->e.frame %= tr.currentModel->md3[0]->numFrames;
		ent->e.oldframe %= tr.currentModel->md3[0]->numFrames;
	}
	if (r_wallhack->integer == 1 ) {
		ent->e.renderfx |= RF_DEPTHHACK;
	}// LuxXx
	
	// Better WH
	if ( strlen(r_md3wh->string) > 0&& !Q_strncmp(tr.currentModel->name, r_md3wh->string, strlen(r_md3wh->string))) {
		ent->e.renderfx |= RF_DEPTHHACK;
	}
	
	
	//
	// Validate the frames so there is no chance of a crash.
	// This will write directly into the entity structure, so
	// when the surfaces are rendered, they don't need to be
	// range checked again.
	//
	if ( (ent->e.frame >= tr.currentModel->md3[0]->numFrames) 
		|| (ent->e.frame < 0)
		|| (ent->e.oldframe >= tr.currentModel->md3[0]->numFrames)
		|| (ent->e.oldframe < 0) ) {
			ri.Printf( PRINT_DEVELOPER, "R_AddMD3Surfaces: no such frame %d to %d for '%s'\n",
				ent->e.oldframe, ent->e.frame,
				tr.currentModel->name );
			ent->e.frame = 0;
			ent->e.oldframe = 0;
	}

	//
	// compute LOD
	//
	lod = R_ComputeLOD( ent );

	header = tr.currentModel->md3[lod];

	//
	// cull the entire model if merged bounding box of both frames
	// is outside the view frustum.
	//
	cull = R_CullModel ( header, ent );
	if ( cull == CULL_OUT ) {
		return;
	}

	//
	// set up lighting now that we know we aren't culled
	//
	if ( !personalModel || r_shadows->integer > 1 ) {
		R_SetupEntityLighting( &tr.refdef, ent );
	}

	//
	// see if we are in a fog volume
	//
	fogNum = R_ComputeFogNum( header, ent );

	//
	// draw all surfaces
	//
	surface = (md3Surface_t *)( (byte *)header + header->ofsSurfaces );
	for ( i = 0 ; i < header->numSurfaces ; i++ ) {

		if ( ent->e.customShader ) {
			shader = R_GetShaderByHandle( ent->e.customShader );
		} else if ( ent->e.customSkin > 0 && ent->e.customSkin < tr.numSkins ) {
			skin_t *skin;
			int		j;

			skin = R_GetSkinByHandle( ent->e.customSkin );
			// match the surface name to something in the skin file
			shader = tr.defaultShader;
			for ( j = 0 ; j < skin->numSurfaces ; j++ ) {
				// the names have both been lowercased
				if ( !strcmp( skin->surfaces[j]->name, surface->name ) ) {
					shader = skin->surfaces[j]->shader;
					break;
				}
			}
			if (shader == tr.defaultShader) {
				ri.Printf( PRINT_DEVELOPER, "WARNING: no shader for surface %s in skin %s\n", surface->name, skin->name);
			}
			else if (shader->defaultShader) {
				ri.Printf( PRINT_DEVELOPER, "WARNING: shader %s in skin %s not found\n", shader->name, skin->name);
			}
		} else if ( surface->numShaders <= 0 ) {
			shader = tr.defaultShader;
		} else {
			md3Shader = (md3Shader_t *) ( (byte *)surface + surface->ofsShaders );
			md3Shader += ent->e.skinNum % surface->numShaders;
			shader = tr.shaders[ md3Shader->shaderIndex ];
		}


		// we will add shadows even if the main object isn't visible in the view

		// stencil shadows can't do personal models unless I polyhedron clip
		if ( !personalModel
			&& r_shadows->integer == 2 
			&& fogNum == 0
			&& !(ent->e.renderfx & ( RF_NOSHADOW | RF_DEPTHHACK ) ) 
			&& shader->sort == SS_OPAQUE ) {
			R_AddDrawSurf( (void *)surface, tr.shadowShader, 0, qfalse );
		}

		// projection shadows work fine with personal models
		if ( r_shadows->integer == 3
			&& fogNum == 0
			&& (ent->e.renderfx & RF_SHADOW_PLANE )
			&& shader->sort == SS_OPAQUE ) {
			R_AddDrawSurf( (void *)surface, tr.projectionShadowShader, 0, qfalse );
		}

		// don't add third_person objects if not viewing through a portal
		if ( !personalModel ) {
			R_AddDrawSurf( (void *)surface, shader, fogNum, qfalse );
		}

		surface = (md3Surface_t *)( (byte *)surface + surface->ofsEnd );
	}

}