Full Template for ticket #1

Templates/Full/game/shaders/common/terrain/blendP.hlsl

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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.
+//-----------------------------------------------------------------------------
+
+#include "terrain.hlsl"
+
+struct ConnectData
+{
+   float4 hpos : POSITION;
+   float2 layerCoord : TEXCOORD0;
+   float2 texCoord : TEXCOORD1;
+};
+
+float4 main(   ConnectData IN,
+               uniform sampler2D layerTex : register(S0),
+               uniform sampler2D textureMap : register(S1),
+               uniform float texId,
+               uniform float layerSize ) : COLOR
+{
+   float4 layerSample = round( tex2D( layerTex, IN.layerCoord ) * 255.0f );
+
+   float blend = calcBlend( texId, IN.layerCoord, layerSize, layerSample );
+
+   clip( blend - 0.0001 );
+
+   return float4( tex2D( textureMap, IN.texCoord ).rgb, blend );
+}

Templates/Full/game/shaders/common/terrain/blendV.hlsl

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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.
+//-----------------------------------------------------------------------------
+
+/// The vertex shader used in the generation and caching of the
+/// base terrain texture.
+
+struct VertData
+{
+   float3 position : POSITION;
+   float2 texCoord : TEXCOORD0;
+};
+
+struct ConnectData
+{
+   float4 hpos : POSITION;
+   float2 layerCoord : TEXCOORD0;
+   float2 texCoord : TEXCOORD1;
+};
+
+ConnectData main( VertData IN,
+                  uniform float2 texScale : register(C0) )
+{
+   ConnectData OUT;
+
+   OUT.hpos = float4( IN.position.xyz, 1 );
+   OUT.layerCoord = IN.texCoord;
+   OUT.texCoord = IN.texCoord * texScale;
+
+   return OUT;
+}

Templates/Full/game/shaders/common/terrain/gl/blendP.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.
+//-----------------------------------------------------------------------------
+
+#include "../terrain.glsl"
+#include "../../gl/hlslCompat.glsl"
+
+varying vec2 layerCoord;
+varying vec2 texCoord;
+
+uniform sampler2D layerTex;
+uniform sampler2D textureMap;
+uniform float texId;
+uniform float layerSize;
+
+void main()
+{
+   vec4 layerSample = round(texture2D( layerTex, layerCoord ) * 255.0);
+
+   float blend = calcBlend( texId, layerCoord, layerSize, layerSample );
+
+   if(blend - 0.0001 < 0.0)
+      discard;
+
+   gl_FragColor = vec4( texture2D( textureMap, texCoord ).rgb, blend );
+}

Templates/Full/game/shaders/common/terrain/gl/blendV.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.
+//-----------------------------------------------------------------------------
+
+/// The vertex shader used in the generation and caching of the
+/// base terrain texture.
+
+varying vec2 layerCoord;
+varying vec2 texCoord;
+
+uniform vec2 texScale;
+
+void main()
+{
+   gl_Position = vec4(gl_Vertex.xyz, 1.0);
+   layerCoord = gl_MultiTexCoord0.st;
+   texCoord = gl_MultiTexCoord0.st * texScale;
+}

Templates/Full/game/shaders/common/terrain/terrain.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.
+//-----------------------------------------------------------------------------
+
+
+float calcBlend( float texId, vec2 layerCoord, float layerSize, vec4 layerSample )
+{
+   // This is here to disable the blend if none of 
+   // the neighbors equal the current id.
+   //
+   // We depend on the input layer samples being 
+   // rounded to the correct integer ids.
+   //
+   vec4 diff = clamp( abs( layerSample - texId ), 0.0, 1.0 );
+   float noBlend = float(any( bvec4(1 - diff) ));
+
+   // Use step to see if any of the layer samples 
+   // match the current texture id.
+   vec4 factors = step( texId, layerSample );
+
+   // This is a custom bilinear filter.
+
+   vec2 uv = layerCoord * layerSize;
+   vec2 xy = floor( uv );
+   vec2 ratio = uv - xy;
+   vec2 opposite = 1 - ratio;
+
+   float blend = ( factors.b * opposite.x + factors.g * ratio.x ) * opposite.y +
+                 ( factors.r * opposite.x + factors.a * ratio.x ) * ratio.y;
+
+   return noBlend * blend;
+}

Templates/Full/game/shaders/common/terrain/terrain.hlsl

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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.
+//-----------------------------------------------------------------------------
+
+
+float calcBlend( float texId, float2 layerCoord, float layerSize, float4 layerSample )
+{
+   // This is here to disable the blend if none of 
+   // the neighbors equal the current id.
+   //
+   // We depend on the input layer samples being 
+   // rounded to the correct integer ids.
+   //
+   float4 diff = saturate( abs( layerSample - texId ) );
+   float noBlend = any( 1 - diff );
+
+   // Use step to see if any of the layer samples 
+   // match the current texture id.
+   float4 factors = step( texId, layerSample );
+
+   // This is a custom bilinear filter.
+
+   float2 uv = layerCoord * layerSize;
+   float2 xy = floor( uv );
+   float2 ratio = uv - xy;
+   float2 opposite = 1 - ratio;
+
+   // NOTE: This will optimize down to two lerp operations.
+   float blend = ( factors.b * opposite.x + factors.g * ratio.x ) * opposite.y +
+                 ( factors.r * opposite.x + factors.a * ratio.x ) * ratio.y;
+
+   return noBlend * blend;
+}