Templates changes for OpenGL shaders.

Templates/Empty/game/shaders/common/postFx/lightRay/gl/lightRayOccludeP.glsl

@@ -0,0 +1,54 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "../../../gl/hlslCompat.glsl"
+#include "shadergen:/autogenConditioners.h"
+#include "../../gl/postFx.glsl"
+
+uniform sampler2D backBuffer;   // The original backbuffer.
+uniform sampler2D prepassTex;   // The pre-pass depth and normals.
+
+uniform float brightScalar;
+
+const vec3 LUMINANCE_VECTOR = vec3(0.3125f, 0.6154f, 0.0721f);
+
+
+void main()
+{
+    vec4 col = vec4( 0, 0, 0, 1 );
+    
+    // Get the depth at this pixel.
+    float depth = prepassUncondition( prepassTex, IN_uv0 ).w;
+    
+    // If the depth is equal to 1.0, read from the backbuffer
+    // and perform the exposure calculation on the result.
+    if ( depth >= 0.999 )
+    {
+        col = texture( backBuffer, IN_uv0 );
+
+        //col = 1 - exp(-120000 * col);
+        col += dot( vec3(col), LUMINANCE_VECTOR ) + 0.0001f;
+        col *= brightScalar;
+    }
+    
+    OUT_FragColor0 = col;
+}

Templates/Empty/game/shaders/common/postFx/lightRay/gl/lightRayP.glsl

@@ -0,0 +1,92 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "../../../gl/hlslCompat.glsl"
+#include "../../gl/postFx.glsl"
+
+uniform sampler2D frameSampler;
+uniform sampler2D backBuffer;
+
+uniform vec3 camForward;
+uniform vec3 lightDirection;
+uniform vec2 screenSunPos;
+uniform vec2 oneOverTargetSize;
+uniform int numSamples;
+uniform float density;
+uniform float weight;
+uniform float decay;
+uniform float exposure;
+
+void main()
+{  
+    vec4 texCoord = vec4( IN_uv0.xy, 0, 0 );        
+    
+    // Store initial sample.
+    half3 color = half3(texture( frameSampler, texCoord.xy ).rgb);  
+	
+	// Store original bb color.
+	vec4 bbCol = texture( backBuffer, IN_uv1 );
+
+    // Set up illumination decay factor.
+    half illuminationDecay = 1.0;  		
+	
+	float amount = saturate( dot( -lightDirection, camForward ) );
+		
+	int samples = int(numSamples * amount);
+	
+	if ( samples <= 0 )
+   {
+	   OUT_FragColor0 = bbCol;
+      return;
+   }
+
+	// Calculate vector from pixel to light source in screen space.
+    half2 deltaTexCoord = half2( texCoord.xy - screenSunPos );  
+
+    // Divide by number of samples and scale by control factor.  
+    deltaTexCoord *= 1.0 / half(samples * density); 
+	
+    // Evaluate summation from Equation 3 NUM_SAMPLES iterations.  
+    for ( int i = 0; i < samples; i++ )  
+    {  
+        // Step sample location along ray.
+        texCoord.xy -= deltaTexCoord;  
+
+        // Retrieve sample at new location.
+        half3 sample_ = half3(tex2Dlod( frameSampler, texCoord ));  
+
+        // Apply sample attenuation scale/decay factors.
+        sample_ *= illuminationDecay * weight;
+
+        // Accumulate combined color.
+        color += sample_;
+
+        // Update exponential decay factor.
+        illuminationDecay *= decay;
+    }       
+   
+    //return saturate( amount ) * color * Exposure;
+	//return bbCol * decay;
+	
+    // Output final color with a further scale control factor.      
+    OUT_FragColor0 = saturate( amount ) * vec4( color * exposure, 1 ) + bbCol;
+}