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materialsystem/stdshaders/morphaccumulate_vs30.fxc

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+//======= Copyright © 1996-2006, Valve Corporation, All rights reserved. ======
+
+//  STATIC: "CONSTANTBASEDMORPH"	"0..1"
+
+#include "common_vs_fxc.h"
+
+struct VS_INPUT
+{
+	float4 vSrcCoord		: TEXCOORD0;
+	float vMorphWeightId	: TEXCOORD1;
+};
+
+struct VS_OUTPUT
+{
+	float4 vDestCoord			: POSITION;
+	float2 vSrcCoord			: TEXCOORD0;
+	float2 vSideSpeedCoord		: TEXCOORD1;
+	
+#if CONSTANTBASEDMORPH
+	float4 vMorphWeights		: TEXCOORD2;
+#else
+	float2 vMorphWeightCoord	: TEXCOORD2;
+#endif
+};
+
+#if !CONSTANTBASEDMORPH
+const float4 vMorphWeightSubrect	 :  register( SHADER_SPECIFIC_CONST_0 );
+const float4 vMorphWeightDimensions	 :  register( SHADER_SPECIFIC_CONST_1 );
+#endif
+
+VS_OUTPUT main( const VS_INPUT v )
+{
+	VS_OUTPUT o = ( VS_OUTPUT )0;
+
+	// FIXME: Want these to be in pixel centers!
+	float2 projSpace = v.vSrcCoord.zw;
+	projSpace *= 2.0f;
+	projSpace -= 1.0f;
+	projSpace.y *= -1.0f;
+	
+	o.vDestCoord = float4( projSpace.x, projSpace.y, 0.0f, 1.0f );
+	o.vSrcCoord = v.vSrcCoord.xy;
+	o.vSideSpeedCoord = v.vSrcCoord.xy;
+
+#if CONSTANTBASEDMORPH
+	o.vMorphWeights = cFlexWeights[ v.vMorphWeightId ];
+#else
+	float flColumn = floor( v.vMorphWeightId / vMorphWeightSubrect.w );
+	o.vMorphWeightCoord.x = vMorphWeightSubrect.x + flColumn + 0.5f;
+	o.vMorphWeightCoord.y = vMorphWeightSubrect.y + v.vMorphWeightId - flColumn * vMorphWeightSubrect.w + 0.5f;
+	o.vMorphWeightCoord.xy /= vMorphWeightDimensions.xy;
+#endif	
+	return o;
+}