Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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5 years ago
//========= 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"
DEFINE_FALLBACK_SHADER( UnlitTwoTexture, UnlitTwoTexture_DX6 )
BEGIN_SHADER( UnlitTwoTexture_DX6,
"Help for UnlitTwoTexture_DX6" )
BEGIN_SHADER_PARAMS
SHADER_PARAM( TEXTURE2, SHADER_PARAM_TYPE_TEXTURE, "shadertest/BaseTexture", "second texture" )
SHADER_PARAM( FRAME2, SHADER_PARAM_TYPE_INTEGER, "0", "frame number for $texture2" )
SHADER_PARAM( TEXTURE2TRANSFORM, SHADER_PARAM_TYPE_MATRIX, "center .5 .5 scale 1 1 rotate 0 translate 0 0", "$texture2 texcoord transform" )
END_SHADER_PARAMS
SHADER_INIT
{
if (params[BASETEXTURE]->IsDefined())
LoadTexture( BASETEXTURE );
if (params[TEXTURE2]->IsDefined())
LoadTexture( TEXTURE2 );
}
SHADER_DRAW
{
SHADOW_STATE
{
pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
SetModulationShadowState();
// Either we've got a constant modulation
bool isTranslucent = IsAlphaModulating();
// Or we've got a texture alpha on either texture
isTranslucent = isTranslucent || TextureIsTranslucent( BASETEXTURE, true ) ||
TextureIsTranslucent( TEXTURE2, true );
if ( isTranslucent )
{
if ( IS_FLAG_SET(MATERIAL_VAR_ADDITIVE) )
{
EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE );
}
else
{
EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA );
}
}
else
{
if ( IS_FLAG_SET(MATERIAL_VAR_ADDITIVE) )
{
EnableAlphaBlending( SHADER_BLEND_ONE, SHADER_BLEND_ONE );
}
else
{
DisableAlphaBlending( );
}
}
pShaderShadow->DrawFlags( SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD0 |
SHADER_DRAW_TEXCOORD1 );
DefaultFog();
}
DYNAMIC_STATE
{
BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
SetFixedFunctionTextureTransform( MATERIAL_TEXTURE0, BASETEXTURETRANSFORM );
BindTexture( SHADER_SAMPLER1, TEXTURE2, FRAME2 );
SetFixedFunctionTextureTransform( MATERIAL_TEXTURE1, TEXTURE2TRANSFORM );
SetModulationDynamicState();
}
Draw();
}
END_SHADER