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: Clears color/depth, but obeys stencil while doing so
//
//=============================================================================//
#include "BaseVSShader.h"
#include "bufferclearobeystencil_vs20.inc"
#include "bufferclearobeystencil_ps20.inc"
#include "bufferclearobeystencil_ps20b.inc"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
DEFINE_FALLBACK_SHADER( BufferClearObeyStencil, BufferClearObeyStencil_DX9 )
BEGIN_VS_SHADER_FLAGS( BufferClearObeyStencil_DX9, "", SHADER_NOT_EDITABLE )
BEGIN_SHADER_PARAMS
SHADER_PARAM( CLEARCOLOR, SHADER_PARAM_TYPE_INTEGER, "1", "activates clearing of color" )
SHADER_PARAM( CLEARALPHA, SHADER_PARAM_TYPE_INTEGER, "-1", "activates clearing of alpha. -1 == copy CLEARCOLOR setting" )
SHADER_PARAM( CLEARDEPTH, SHADER_PARAM_TYPE_INTEGER, "1", "activates clearing of depth" )
END_SHADER_PARAMS
SHADER_INIT_PARAMS()
{
}
SHADER_FALLBACK
{
if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
{
return "BufferClearObeyStencil_DX8";
}
return 0;
}
SHADER_INIT
{
if ( !params[CLEARALPHA]->IsDefined() )
params[CLEARALPHA]->SetIntValue( -1 );
}
SHADER_DRAW
{
bool bEnableColorWrites = params[CLEARCOLOR]->GetIntValue() != 0;
bool bEnableAlphaWrites = (params[CLEARALPHA]->GetIntValue() >= 0) ? (params[CLEARALPHA]->GetIntValue() != 0) : bEnableColorWrites;
bool bUsesColor = bEnableColorWrites || bEnableAlphaWrites;
SHADOW_STATE
{
pShaderShadow->DepthFunc( SHADER_DEPTHFUNC_ALWAYS );
bool bEnableDepthWrites = params[CLEARDEPTH]->GetIntValue() != 0;
pShaderShadow->EnableDepthWrites( bEnableDepthWrites );
pShaderShadow->EnableColorWrites( bEnableColorWrites );
pShaderShadow->EnableAlphaWrites( bEnableAlphaWrites );
pShaderShadow->VertexShaderVertexFormat( VERTEX_POSITION | VERTEX_COLOR, 1, NULL, 0 );
DECLARE_STATIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
SET_STATIC_VERTEX_SHADER_COMBO( USESCOLOR, bUsesColor || g_pHardwareConfig->PlatformRequiresNonNullPixelShaders() );
SET_STATIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
//avoid setting a pixel shader when only doing depth/stencil operations, as recommended by PIX
if( bUsesColor || g_pHardwareConfig->PlatformRequiresNonNullPixelShaders() )
{
if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
DECLARE_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
SET_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
}
else
{
DECLARE_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
SET_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
}
}
pShaderShadow->EnableBlending( true );
pShaderShadow->BlendFunc( SHADER_BLEND_ONE, SHADER_BLEND_ZERO );
pShaderShadow->EnableAlphaTest( true );
pShaderShadow->AlphaFunc( SHADER_ALPHAFUNC_ALWAYS, 0 );
}
DYNAMIC_STATE
{
DECLARE_DYNAMIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
SET_DYNAMIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
//avoid setting a pixel shader when only doing depth/stencil operations, as recommended by PIX
if( bUsesColor || g_pHardwareConfig->PlatformRequiresNonNullPixelShaders() )
{
if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
DECLARE_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
SET_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
}
else
{
DECLARE_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
SET_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
}
}
}
Draw( );
}
END_SHADER