Full Template for ticket #1

Templates/Full/game/shaders/common/gl/planarReflectBumpP.glsl

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+//-----------------------------------------------------------------------------
+// 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.
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+// Data
+//-----------------------------------------------------------------------------
+uniform sampler2D diffuseMap, refractMap, bumpMap;
+uniform vec4 shadeColor;
+
+varying vec2 TEX0;
+varying vec4 TEX1;
+
+//-----------------------------------------------------------------------------
+// Fade edges of axis for texcoord passed in
+//-----------------------------------------------------------------------------
+float fadeAxis( float val )
+{
+   // Fades from 1.0 to 0.0 when less than 0.1
+   float fadeLow = clamp( val * 10.0, 0.0, 1.0 );
+   
+   // Fades from 1.0 to 0.0 when greater than 0.9
+   float fadeHigh = 1.0 - clamp( (val - 0.9) * 10.0, 0.0, 1.0 );
+
+   return fadeLow * fadeHigh;
+}
+
+
+//-----------------------------------------------------------------------------
+// Main                                                                        
+//-----------------------------------------------------------------------------
+void main()
+{
+   vec3 bumpNorm = texture2D( bumpMap, TEX0 ).rgb * 2.0 - 1.0;
+   vec2 offset = vec2( bumpNorm.x, bumpNorm.y );
+   vec4 texIndex = TEX1;
+
+   // The fadeVal is used to "fade" the distortion at the edges of the screen.
+   // This is done so it won't sample the reflection texture out-of-bounds and create artifacts
+   // Note - this can be done more efficiently with a texture lookup
+   float fadeVal = fadeAxis( texIndex.x / texIndex.w ) * fadeAxis( texIndex.y / texIndex.w );
+
+   const float distortion = 0.2;
+   texIndex.xy += offset * distortion * fadeVal;
+
+   vec4 diffuseColor = texture2D( diffuseMap, TEX0 );
+   vec4 reflectColor = texture2DProj( refractMap, texIndex );
+
+   gl_FragColor = diffuseColor + reflectColor * diffuseColor.a;
+}