source-engine/materialsystem/stdshaders/eyes.cpp

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2020-04-22 16:56:21 +00:00
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: eye renderer
//
// $Header: $
// $NoKeywords: $
//=============================================================================//
#include "BaseVSShader.h"
#include "eyes_dx8_dx9_helper.h"
#include "cloak_blended_pass_helper.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
DEFINE_FALLBACK_SHADER( eyes, Eyes_dx8 )
BEGIN_VS_SHADER( Eyes_dx8,
"Help for Eyes" )
BEGIN_SHADER_PARAMS
SHADER_PARAM_OVERRIDE( BASETEXTURE, SHADER_PARAM_TYPE_TEXTURE, "models/alyx/eyeball_l", "iris texture", 0 )
SHADER_PARAM( IRIS, SHADER_PARAM_TYPE_TEXTURE, "models/alyx/pupil_l", "iris texture" )
SHADER_PARAM( IRISFRAME, SHADER_PARAM_TYPE_INTEGER, "0", "frame for the iris texture" )
SHADER_PARAM( GLINT, SHADER_PARAM_TYPE_TEXTURE, "models/humans/male/glint", "glint texture" )
SHADER_PARAM( EYEORIGIN, SHADER_PARAM_TYPE_VEC3, "[0 0 0]", "origin for the eyes" )
SHADER_PARAM( EYEUP, SHADER_PARAM_TYPE_VEC3, "[0 0 1]", "up vector for the eyes" )
SHADER_PARAM( IRISU, SHADER_PARAM_TYPE_VEC4, "[0 1 0 0]", "U projection vector for the iris" )
SHADER_PARAM( IRISV, SHADER_PARAM_TYPE_VEC4, "[0 0 1 0]", "V projection vector for the iris" )
SHADER_PARAM( GLINTU, SHADER_PARAM_TYPE_VEC4, "[0 1 0 0]", "U projection vector for the glint" )
SHADER_PARAM( GLINTV, SHADER_PARAM_TYPE_VEC4, "[0 0 1 0]", "V projection vector for the glint" )
SHADER_PARAM( DILATION, SHADER_PARAM_TYPE_FLOAT, "0", "Iris dilation" )
SHADER_PARAM( INTRO, SHADER_PARAM_TYPE_BOOL, "0", "is eyes in the ep1 intro" )
SHADER_PARAM( ENTITYORIGIN, SHADER_PARAM_TYPE_VEC3,"0.0","center if the model in world space" )
SHADER_PARAM( WARPPARAM, SHADER_PARAM_TYPE_FLOAT,"0.0","animation param between 0 and 1" )
// Cloak Pass
SHADER_PARAM( CLOAKPASSENABLED, SHADER_PARAM_TYPE_BOOL, "0", "Enables cloak render in a second pass" )
SHADER_PARAM( CLOAKFACTOR, SHADER_PARAM_TYPE_FLOAT, "0.0", "" )
SHADER_PARAM( CLOAKCOLORTINT, SHADER_PARAM_TYPE_COLOR, "[1 1 1]", "Cloak color tint" )
SHADER_PARAM( REFRACTAMOUNT, SHADER_PARAM_TYPE_FLOAT, "2", "" )
END_SHADER_PARAMS
void SetupVars( Eyes_DX8_DX9_Vars_t &info )
{
info.m_nBaseTexture = BASETEXTURE;
info.m_nFrame = FRAME;
info.m_nIris = IRIS;
info.m_nIrisFrame = IRISFRAME;
info.m_nGlint = GLINT;
info.m_nEyeOrigin = EYEORIGIN;
info.m_nEyeUp = EYEUP;
info.m_nIrisU = IRISU;
info.m_nIrisV = IRISV;
info.m_nGlintU = GLINTU;
info.m_nGlintV = GLINTV;
info.m_nDilation = DILATION;
info.m_nIntro = INTRO;
info.m_nEntityOrigin = ENTITYORIGIN;
info.m_nWarpParam = WARPPARAM;
}
// Cloak Pass
void SetupVarsCloakBlendedPass( CloakBlendedPassVars_t &info )
{
info.m_nCloakFactor = CLOAKFACTOR;
info.m_nCloakColorTint = CLOAKCOLORTINT;
info.m_nRefractAmount = REFRACTAMOUNT;
}
bool NeedsPowerOfTwoFrameBufferTexture( IMaterialVar **params, bool bCheckSpecificToThisFrame ) const
{
if ( params[CLOAKPASSENABLED]->GetIntValue() ) // If material supports cloaking
{
if ( bCheckSpecificToThisFrame == false ) // For setting model flag at load time
return true;
else if ( ( params[CLOAKFACTOR]->GetFloatValue() > 0.0f ) && ( params[CLOAKFACTOR]->GetFloatValue() < 1.0f ) ) // Per-frame check
return true;
// else, not cloaking this frame, so check flag2 in case the base material still needs it
}
// Check flag2 if not drawing cloak pass
return IS_FLAG2_SET( MATERIAL_VAR2_NEEDS_POWER_OF_TWO_FRAME_BUFFER_TEXTURE );
}
bool IsTranslucent( IMaterialVar **params ) const
{
if ( params[CLOAKPASSENABLED]->GetIntValue() ) // If material supports cloaking
{
if ( ( params[CLOAKFACTOR]->GetFloatValue() > 0.0f ) && ( params[CLOAKFACTOR]->GetFloatValue() < 1.0f ) ) // Per-frame check
return true;
// else, not cloaking this frame, so check flag in case the base material still needs it
}
// Check flag if not drawing cloak pass
return IS_FLAG_SET( MATERIAL_VAR_TRANSLUCENT );
}
SHADER_INIT_PARAMS()
{
Eyes_DX8_DX9_Vars_t info;
SetupVars( info );
InitParamsEyes_DX8_DX9( this, params, pMaterialName, info );
// Cloak Pass
if ( !params[CLOAKPASSENABLED]->IsDefined() )
{
params[CLOAKPASSENABLED]->SetIntValue( 0 );
}
else if ( params[CLOAKPASSENABLED]->GetIntValue() )
{
CloakBlendedPassVars_t info;
SetupVarsCloakBlendedPass( info );
InitParamsCloakBlendedPass( this, params, pMaterialName, info );
}
}
SHADER_FALLBACK
{
if ( IsPC() && g_pHardwareConfig->GetDXSupportLevel() < 80 )
return "Eyes_dx6";
return 0;
}
SHADER_INIT
{
Eyes_DX8_DX9_Vars_t info;
SetupVars( info );
InitEyes_DX8_DX9( this, params, info );
// Cloak Pass
if ( params[CLOAKPASSENABLED]->GetIntValue() )
{
CloakBlendedPassVars_t info;
SetupVarsCloakBlendedPass( info );
InitCloakBlendedPass( this, params, info );
}
}
SHADER_DRAW
{
// Skip the standard rendering if cloak pass is fully opaque
bool bDrawStandardPass = true;
if ( params[CLOAKPASSENABLED]->GetIntValue() && ( pShaderShadow == NULL ) ) // && not snapshotting
{
CloakBlendedPassVars_t info;
SetupVarsCloakBlendedPass( info );
if ( CloakBlendedPassIsFullyOpaque( params, info ) )
{
// There is some strangeness in DX8 when trying to skip the main pass, so leave this alone for now
//bDrawStandardPass = false;
}
}
// Standard rendering pass
if ( bDrawStandardPass )
{
Eyes_DX8_DX9_Vars_t info;
SetupVars( info );
DrawEyes_DX8_DX9( false, this, params, pShaderAPI, pShaderShadow, info, vertexCompression );
}
else
{
// Skip this pass!
Draw( false );
}
// Cloak Pass
if ( params[CLOAKPASSENABLED]->GetIntValue() )
{
// If ( snapshotting ) or ( we need to draw this frame )
if ( ( pShaderShadow != NULL ) || ( ( params[CLOAKFACTOR]->GetFloatValue() > 0.0f ) && ( params[CLOAKFACTOR]->GetFloatValue() < 1.0f ) ) )
{
CloakBlendedPassVars_t info;
SetupVarsCloakBlendedPass( info );
DrawCloakBlendedPass( this, params, pShaderAPI, pShaderShadow, info, vertexCompression );
}
else // We're not snapshotting and we don't need to draw this frame
{
// Skip this pass!
Draw( false );
}
}
}
END_SHADER