Changeset 1546 for GTP/trunk/App/Demos/Illum/IBRBillboardCloudTrees/OGRE/IBRTreesOGRE/media/general/f_lighting_indirect_texture_mapping.cg

Timestamp:

09/30/06 19:00:42 (18 years ago)

Author:

igarcia

Message:

 

File:

• GTP/trunk/App/Demos/Illum/IBRBillboardCloudTrees/OGRE/IBRTreesOGRE/media/general/f_lighting_indirect_texture_mapping.cg (modified) (5 diffs)

GTP/trunk/App/Demos/Illum/IBRBillboardCloudTrees/OGRE/IBRTreesOGRE/media/general/f_lighting_indirect_texture_mapping.cg

@@ -5 +5 @@
   sampler2D sourceTexture : TEXUNIT1;
   sampler2D visibilityTexture : TEXUNIT2;
+  sampler2D noisyTexture : TEXUNIT3;
 
 
@@ -74 +75 @@
                 float e = lerp(visibility.x, visibility.y, unifcoord.x);
                 float f = lerp(visibility.w, visibility.z, unifcoord.x);
-                float g = clamp(lerp(e, f, unifcoord.y), 0.3, 1.0);
+                float g = 1.0 - clamp(lerp(e, f, unifcoord.y), 0.0, 1.0);
                 ambientColor +=  float3(g, g, g);
             }       
@@ -84 +85 @@
 
             // Angle between normal and light vector
-            float l_CosNL = saturate(dot(l_Normal, l_LightVector)) + saturate(-dot(l_Normal, l_LightVector));
+            float l_CosNL = clamp(dot(l_Normal, l_LightVector), 0.0, 1.0);
 
             // No light can reach back surfaces...
-            //if (l_CosNL == 0)
-            //    discard;
+            if (l_CosNL == 0)
+            {
+                l_CosNL = clamp(-dot(l_Normal, l_LightVector), 0.0, 1.0);
+            }
             
-            l_Out.color.rgb += (p_Diffuse.rgb * diffuseColor.rgb) * p_LightDiffuse.rgb * l_CosNL;
+            l_Out.color.rgb += (p_Diffuse.rgb * diffuseColor.rgb) * p_LightDiffuse.rgb * l_CosNL + float3(tex2D(noisyTexture,float2(p_In.wposition.x,p_In.wposition.z)/ 10000.0).x * 0.15, tex2D(noisyTexture,float2(p_In.wposition.z,p_In.wposition.x)/10000.0).x * 0.25,0.0);
             
             // Specular component
@@ -96 +99 @@
 
             // Apply cosine power distribution around mirror direction
-            float l_CosNH = saturate(dot(l_Normal, l_HalfVector)) + saturate(-dot(l_Normal, l_HalfVector));
+            float l_CosNH = clamp(dot(l_Normal, l_HalfVector), 0.0, 1.0) + clamp(-dot(l_Normal, l_HalfVector), 0.0, 1.0);
                 
             float l_SpecularPower = pow(l_CosNH, p_Specular.a);
@@ -103 +106 @@
 
             // Add specular component
-            l_Out.color.rgb += l_Specular.rgb;
+            //l_Out.color.rgb += l_Specular.rgb;
 
             // Modulate by light incoming power