1.1 --- a/src/pvr2/rendcore.c	Thu Jan 25 08:18:03 2007 +0000
     1.2 +++ b/src/pvr2/rendcore.c	Sat Jan 27 12:03:53 2007 +0000
     1.3 @@ -1,5 +1,5 @@
     1.4  /**
     1.5 - * $Id: rendcore.c,v 1.13 2007-01-25 08:18:03 nkeynes Exp $
     1.6 + * $Id: rendcore.c,v 1.14 2007-01-26 01:37:39 nkeynes Exp $
     1.7   *
     1.8   * PVR2 renderer core.
     1.9   *
    1.10 @@ -250,9 +250,9 @@
    1.11  	       (unpacked[3].y - unpacked[1].y) * diff1.x) / detxy;
    1.12      float s = ((unpacked[3].y - unpacked[1].y) * diff0.x -
    1.13  	       (unpacked[3].x - unpacked[1].x) * diff0.y) / detxy;
    1.14 -    diff0.z = unpacked[0].z - unpacked[1].z;
    1.15 -    diff1.z = unpacked[2].z - unpacked[1].z;
    1.16 -    unpacked[3].z = unpacked[1].z + (t*diff0.z) + (s*diff1.z);
    1.17 +    diff0.z = (1/unpacked[0].z) - (1/unpacked[1].z);
    1.18 +    diff1.z = (1/unpacked[2].z) - (1/unpacked[1].z);
    1.19 +    unpacked[3].z = 1/((1/unpacked[1].z) + (t*diff0.z) + (s*diff1.z));
    1.20  
    1.21      diff0.u = unpacked[0].u - unpacked[1].u;
    1.22      diff0.v = unpacked[0].v - unpacked[1].v;
    1.23 @@ -298,7 +298,7 @@
    1.24  				   vertexes[i]->offset_rgba[1],
    1.25  				   vertexes[i]->offset_rgba[2] );
    1.26  	}
    1.27 -	glVertex3f( vertexes[i]->x, vertexes[i]->y, vertexes[i]->z );
    1.28 +	glVertex3f( vertexes[i]->x, vertexes[i]->y, 1/vertexes[i]->z );
    1.29      }
    1.30  
    1.31      glEnd();
    1.32 @@ -353,7 +353,7 @@
    1.33  	    glSecondaryColor3ubEXT( (GLubyte)(spec >> 16), (GLubyte)(spec >> 8), 
    1.34  				 (GLubyte)spec );
    1.35  	}
    1.36 -	glVertex3f( vertexf[0], vertexf[1], vertexf[2] );
    1.37 +	glVertex3f( vertexf[0], vertexf[1], 1/vertexf[2] );
    1.38  	vertexes += vertex_size;
    1.39      }
    1.40  
    1.41 @@ -613,5 +613,5 @@
    1.42  
    1.43      } while( ((segment++)->control & SEGMENT_END) == 0 );
    1.44  
    1.45 -    return maximumz;
    1.46 +    return 1/maximumz;
    1.47  }