//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: 
//
// $Header: $
// $NoKeywords: $
//===========================================================================//

#include "shaderlib/cshader.h"

// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"

BEGIN_SHADER_FLAGS( ViewAlpha, "Help for ViewAlpha", SHADER_NOT_EDITABLE )
			  
	BEGIN_SHADER_PARAMS
	END_SHADER_PARAMS

	SHADER_INIT
	{
		LoadTexture( BASETEXTURE );
	}

	SHADER_DRAW
	{
		SHADOW_STATE
		{
			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
			pShaderShadow->EnableCustomPixelPipe( true );
			pShaderShadow->CustomTextureStages( 1 );
			pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0, 
				SHADER_TEXCHANNEL_COLOR, SHADER_TEXOP_SELECTARG1, 
				SHADER_TEXARG_TEXTUREALPHA, SHADER_TEXARG_CONSTANTCOLOR );
			pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0, 
				SHADER_TEXCHANNEL_ALPHA, SHADER_TEXOP_SELECTARG1, 
				SHADER_TEXARG_TEXTURE, SHADER_TEXARG_VERTEXCOLOR );

			pShaderShadow->DrawFlags( SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD0 );
		}
		DYNAMIC_STATE
		{
			BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
			SetFixedFunctionTextureTransform( MATERIAL_TEXTURE0, BASETEXTURETRANSFORM );
		}
		Draw( );

	}
END_SHADER