Changeset 1735 for GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_Diffuse.hlsl

Timestamp:

11/09/06 17:04:55 (18 years ago)

Author:

szirmay

Message:

 

File:

• GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_Diffuse.hlsl (modified) (2 diffs)

GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_Diffuse.hlsl

@@ -3 +3 @@
 float4 readCubeMap(samplerCUBE cm, float3 coord)                
 {
-        float4 color = texCUBE( cm, float3(coord.xy, -coord.z) );
+        float4 color = texCUBElod( cm, float4(coord.xy, -coord.z, 1) );
         color.a = 1;
         return color;
@@ -10 +10 @@
 float readDistanceCubeMap(samplerCUBE dcm, float3 coord)                
 {
-        float dist = texCUBE(dcm, float3(coord.xy, - coord.z)).r;
+        float dist = texCUBElod(dcm, float4(coord.xy, - coord.z, 1)).r;
         if(dist == 0) dist = 1000000; ///sky
         return dist;
 }
 
-// This function is called several times.
-float3 Hit( float3 x, float3 R, samplerCUBE mp )
-{
-        float rl = readDistanceCubeMap( mp, R);                         // |r|
-        
-        float ppp = length( x ) /  readDistanceCubeMap( mp, x);                 // |p|/|p’|
-        float dun = 0, pun = ppp, dov = 0, pov = 0;
-        float dl = rl * ( 1 - ppp );                                                    // eq. 2
-        float3 l = x + R * dl;                                                                  // ray equation
-
-        // iteration
-        for( int i = 0; i < 2; i++ )    // 2 !!!!!!!!!!!!!!!!!!!!!!!
-        {
-                float llp = length( l ) / readDistanceCubeMap( mp, l);          // |l|/|l’|
-                if ( llp < 0.999f )                                                                     // undershooting
-                {
-                        dun = dl; pun = llp;                                                    // last undershooting
-                        dl += ( dov == 0 ) ? rl * ( 1 - llp ) :                 // eq. 2
-                                ( dl - dov ) * ( 1 - llp ) / ( llp - pov );     // eq. 3
-                } else if ( llp > 1.001f )                                                      // overshooting
-                {
-                        dov = dl; pov = llp;                                                    // last overshooting
-                        dl += ( dl -dun ) * ( 1 - llp ) / ( llp - pun );// eq. 3
-                }
-                l = x + R * dl;                                                                         // ray equation
-        }
-        return l;                                                                                               // computed hit point
-}
 
 /////////////////////