ported stdshader_* (dx6, dx7, dx8, dx9)

materialsystem/stdshaders/haloadd_ps2x.fxc

@@ -0,0 +1,26 @@
+//======= Copyright <20> 1996-2006, Valve Corporation, All rights reserved. ======
+
+#include "common_ps_fxc.h"
+
+sampler TexSampler : register( s0 );
+
+float g_flDimValue : register( c0 );
+
+struct PS_INPUT
+{
+	HALF2 baseTexCoord				: TEXCOORD0;		// Base texture coordinate
+};
+
+float4 main( PS_INPUT i ) : COLOR
+{
+	float4 result = tex2D( TexSampler, i.baseTexCoord );
+
+	// Scale by dim value before computing luminance below
+	result.rgb *= saturate( g_flDimValue );
+
+	// Store max color component in alpha for alpha blend of one/invSrcAlpha
+	float flLuminance = max( result.r, max( result.g, result.b ) );
+	result.a = pow( flLuminance, 0.8f );
+
+	return result.rgba;
+}