mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-12-02 00:41:51 +00:00
58 lines
No EOL
2.5 KiB
Text
58 lines
No EOL
2.5 KiB
Text
/*
|
|
===========================================================================
|
|
|
|
Doom 3 BFG Edition GPL Source Code
|
|
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
|
|
Copyright (C) 2013-2014 Robert Beckebans
|
|
|
|
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
|
|
|
|
Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Doom 3 BFG Edition Source 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 for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
|
|
|
|
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
|
|
|
|
===========================================================================
|
|
*/
|
|
|
|
#include "global.inc"
|
|
|
|
uniform sampler2D samp0 : register(s0); // texture 0 is _current Render
|
|
uniform sampler2D samp1 : register(s1); // texture 1 is the per-surface bump map
|
|
|
|
struct PS_IN {
|
|
float4 position : VPOS;
|
|
float4 texcoord0 : TEXCOORD0_centroid;
|
|
float4 texcoord1 : TEXCOORD1_centroid;
|
|
};
|
|
|
|
struct PS_OUT {
|
|
float4 color : COLOR;
|
|
};
|
|
|
|
void main( PS_IN fragment, out PS_OUT result ) {
|
|
|
|
// load the filtered normal map and convert to -1 to 1 range
|
|
float4 bumpMap = ( tex2D( samp1, fragment.texcoord0.xy ) * 2.0f ) - 1.0f;
|
|
float2 localNormal = bumpMap.wy;
|
|
|
|
// calculate the screen texcoord in the 0.0 to 1.0 range
|
|
float2 screenTexCoord = vposToScreenPosTexCoord( fragment.position.xy );
|
|
screenTexCoord += ( localNormal * fragment.texcoord1.xy );
|
|
screenTexCoord = saturate( screenTexCoord );
|
|
|
|
// load the screen render
|
|
result.color = tex2D( samp0, screenTexCoord.xy );
|
|
} |