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/*
* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "devColor.h"
#include "vs2ps.h"
#include "vsConstants.h"
// quaternions
void quatToMatrix(float4 q, out float3 N[3]) {
float3 t1 = q.xyz * q.yzx *2;
float3 t2 = q.zxy * q.www *2;
float3 t3 = q.xyz * q.xyz *2;
float3 t4 = 1-(t3+t3.yzx);
float3 r1 = t1 + t2;
float3 r2 = t1 - t2;
N[0] = float3(t4.y, r1.x, r2.z);
N[1] = float3(r2.x, t4.z, r1.y);
N[2] = float3(r1.z, r2.y, t4.x);
N[2] *= (q.w>=0) ? 1 : -1; // ATI normal map generator compatibility
}
float3 getNormal(float4 q) {
return float3(1-2*(q.y*q.y+q.z*q.z),2*(q.x*q.y+q.z*q.w),2*(q.z*q.x-q.y*q.w));
}
float3 getLocalVector(float3 global, float3 N[3]) {
return float3( dot(global,N[1]), dot(global,N[2]), dot(global,N[0]) );
}
void calcLocalBump(float4 ipos, float4 iTn, in float4x3 mW, out LocalBumpOut r) {
float3 pos = mul(ipos, mW);
float3 n[3];
quatToMatrix(iTn, n);
for (int i=0; i!=3; ++i)
n[i] = mul(n[i], (float3x3)mW);
#if 0
float3 s = pos*0.5+getTime();
pos += float3( sin(s.y), sin(s.z), sin(s.x) )*.1;
#endif
float3 Eye = gCameraPos.xyz - pos;
r.lBump.eye = getLocalVector(Eye, n);
for (int k=0; k
