mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-23 06:36:54 +00:00
312 lines
11 KiB
C++
312 lines
11 KiB
C++
|
//========= Copyright Valve Corporation, All rights reserved. ============//
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
// $NoKeywords: $
|
||
|
|
//=============================================================================//
|
||
|
|
|
||
|
|
#include "BaseVSShader.h"
|
||
|
|
#include "mathlib/vmatrix.h"
|
||
|
|
|
||
|
|
#include "water_ps14.inc"
|
||
|
|
#include "watercheap_vs14.inc"
|
||
|
|
|
||
|
|
// memdbgon must be the last include file in a .cpp file!!!
|
||
|
|
#include "tier0/memdbgon.h"
|
||
|
|
|
||
|
|
DEFINE_FALLBACK_SHADER( Water, Water_DX81 )
|
||
|
|
|
||
|
|
BEGIN_VS_SHADER( Water_DX81,
|
||
|
|
"Help for Water_DX81" )
|
||
|
|
|
||
|
|
BEGIN_SHADER_PARAMS
|
||
|
|
SHADER_PARAM( REFRACTTEXTURE, SHADER_PARAM_TYPE_TEXTURE, "", "" )
|
||
|
|
SHADER_PARAM( REFLECTTEXTURE, SHADER_PARAM_TYPE_TEXTURE, "_rt_WaterReflection", "" )
|
||
|
|
SHADER_PARAM( REFRACTAMOUNT, SHADER_PARAM_TYPE_FLOAT, "0", "" )
|
||
|
|
SHADER_PARAM( REFRACTTINT, SHADER_PARAM_TYPE_COLOR, "[1 1 1]", "refraction tint" )
|
||
|
|
SHADER_PARAM( REFLECTAMOUNT, SHADER_PARAM_TYPE_FLOAT, "0", "" )
|
||
|
|
SHADER_PARAM( REFLECTTINT, SHADER_PARAM_TYPE_COLOR, "[1 1 1]", "reflection tint" )
|
||
|
|
SHADER_PARAM( NORMALMAP, SHADER_PARAM_TYPE_TEXTURE, "", "normal map" )
|
||
|
|
SHADER_PARAM( BUMPFRAME, SHADER_PARAM_TYPE_INTEGER, "0", "frame number for $bumpmap" )
|
||
|
|
SHADER_PARAM( BUMPTRANSFORM, SHADER_PARAM_TYPE_MATRIX, "center .5 .5 scale 1 1 rotate 0 translate 0 0", "$bumpmap texcoord transform" )
|
||
|
|
SHADER_PARAM( SCALE, SHADER_PARAM_TYPE_VEC2, "[1 1]", "" )
|
||
|
|
SHADER_PARAM( TIME, SHADER_PARAM_TYPE_FLOAT, "", "" )
|
||
|
|
SHADER_PARAM( WATERDEPTH, SHADER_PARAM_TYPE_FLOAT, "", "" )
|
||
|
|
SHADER_PARAM( CHEAPWATERSTARTDISTANCE, SHADER_PARAM_TYPE_FLOAT, "", "This is the distance from the eye in inches that the shader should start transitioning to a cheaper water shader." )
|
||
|
|
SHADER_PARAM( CHEAPWATERENDDISTANCE, SHADER_PARAM_TYPE_FLOAT, "", "This is the distance from the eye in inches that the shader should finish transitioning to a cheaper water shader." )
|
||
|
|
SHADER_PARAM( ENVMAP, SHADER_PARAM_TYPE_TEXTURE, "env_cubemap", "envmap" )
|
||
|
|
SHADER_PARAM( ENVMAPFRAME, SHADER_PARAM_TYPE_INTEGER, "", "" )
|
||
|
|
SHADER_PARAM( FOGCOLOR, SHADER_PARAM_TYPE_COLOR, "", "" )
|
||
|
|
SHADER_PARAM( FORCECHEAP, SHADER_PARAM_TYPE_INTEGER, "", "" )
|
||
|
|
SHADER_PARAM( FORCEEXPENSIVE, SHADER_PARAM_TYPE_BOOL, "", "" )
|
||
|
|
SHADER_PARAM( REFLECTENTITIES, SHADER_PARAM_TYPE_BOOL, "", "" )
|
||
|
|
SHADER_PARAM( REFLECTBLENDFACTOR, SHADER_PARAM_TYPE_FLOAT, "1.0", "" )
|
||
|
|
SHADER_PARAM( NOFRESNEL, SHADER_PARAM_TYPE_BOOL, "0", "" )
|
||
|
|
END_SHADER_PARAMS
|
||
|
|
|
||
|
|
SHADER_INIT_PARAMS()
|
||
|
|
{
|
||
|
|
SET_FLAGS2( MATERIAL_VAR2_NEEDS_TANGENT_SPACES );
|
||
|
|
if( !params[CHEAPWATERSTARTDISTANCE]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[CHEAPWATERSTARTDISTANCE]->SetFloatValue( 500.0f );
|
||
|
|
}
|
||
|
|
if( !params[CHEAPWATERENDDISTANCE]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[CHEAPWATERENDDISTANCE]->SetFloatValue( 1000.0f );
|
||
|
|
}
|
||
|
|
if( !params[SCALE]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[SCALE]->SetVecValue( 1.0f, 1.0f );
|
||
|
|
}
|
||
|
|
if( !params[FOGCOLOR]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[FOGCOLOR]->SetVecValue( 1.0f, 0.0f, 0.0f );
|
||
|
|
Warning( "material %s needs to have a $fogcolor.\n", pMaterialName );
|
||
|
|
}
|
||
|
|
if( !params[REFLECTENTITIES]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[REFLECTENTITIES]->SetIntValue( 0 );
|
||
|
|
}
|
||
|
|
if( !params[FORCEEXPENSIVE]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[FORCEEXPENSIVE]->SetIntValue( 0 );
|
||
|
|
}
|
||
|
|
if( params[FORCEEXPENSIVE]->GetIntValue() && params[FORCECHEAP]->GetIntValue() )
|
||
|
|
{
|
||
|
|
params[FORCEEXPENSIVE]->SetIntValue( 0 );
|
||
|
|
}
|
||
|
|
if( !params[REFLECTBLENDFACTOR]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[REFLECTBLENDFACTOR]->SetFloatValue( 1.0f );
|
||
|
|
}
|
||
|
|
if( !params[FORCEEXPENSIVE]->GetIntValue() && !params[ENVMAP]->IsDefined() )
|
||
|
|
{
|
||
|
|
params[ENVMAP]->SetStringValue( "engine/defaultcubemap" );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SHADER_FALLBACK
|
||
|
|
{
|
||
|
|
if( g_pHardwareConfig->GetDXSupportLevel() < 81 )
|
||
|
|
{
|
||
|
|
return "Water_DX80";
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
SHADER_INIT
|
||
|
|
{
|
||
|
|
Assert( params[WATERDEPTH]->IsDefined() );
|
||
|
|
if( params[REFRACTTEXTURE]->IsDefined() )
|
||
|
|
{
|
||
|
|
LoadTexture( REFRACTTEXTURE );
|
||
|
|
}
|
||
|
|
if( params[REFLECTTEXTURE]->IsDefined() )
|
||
|
|
{
|
||
|
|
LoadTexture( REFLECTTEXTURE );
|
||
|
|
}
|
||
|
|
if (params[ENVMAP]->IsDefined() )
|
||
|
|
{
|
||
|
|
LoadTexture( ENVMAP );
|
||
|
|
}
|
||
|
|
if (params[NORMALMAP]->IsDefined() )
|
||
|
|
{
|
||
|
|
LoadBumpMap( NORMALMAP );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
inline int GetReflectionRefractionPixelShaderIndex( bool bReflection, bool bRefraction )
|
||
|
|
{
|
||
|
|
// "REFLECT" "0..1"
|
||
|
|
// "REFRACT" "0..1"
|
||
|
|
int pshIndex = ( bReflection ? 1 : 0 ) | ( bRefraction ? 2 : 0 );
|
||
|
|
return pshIndex;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void DrawReflectionRefraction( IMaterialVar **params, IShaderShadow* pShaderShadow,
|
||
|
|
IShaderDynamicAPI* pShaderAPI, bool bReflection, bool bRefraction )
|
||
|
|
{
|
||
|
|
SHADOW_STATE
|
||
|
|
{
|
||
|
|
SetInitialShadowState( );
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
|
||
|
|
if( bRefraction )
|
||
|
|
{
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER2, true );
|
||
|
|
}
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER3, true );
|
||
|
|
if( bReflection )
|
||
|
|
{
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER4, true );
|
||
|
|
}
|
||
|
|
int fmt = VERTEX_POSITION | VERTEX_NORMAL | VERTEX_TANGENT_S | VERTEX_TANGENT_T;
|
||
|
|
pShaderShadow->VertexShaderVertexFormat( fmt, 1, 0, 0 );
|
||
|
|
|
||
|
|
water_ps14_Static_Index vshIndex;
|
||
|
|
pShaderShadow->SetVertexShader( "Water_ps14", vshIndex.GetIndex() );
|
||
|
|
|
||
|
|
int pshIndex = GetReflectionRefractionPixelShaderIndex( bReflection, bRefraction );
|
||
|
|
pShaderShadow->SetPixelShader ( "Water_ps14", pshIndex );
|
||
|
|
FogToFogColor();
|
||
|
|
}
|
||
|
|
DYNAMIC_STATE
|
||
|
|
{
|
||
|
|
pShaderAPI->SetDefaultState();
|
||
|
|
pShaderAPI->BindStandardTexture( SHADER_SAMPLER1, TEXTURE_NORMALIZATION_CUBEMAP );
|
||
|
|
if( bRefraction )
|
||
|
|
{
|
||
|
|
BindTexture( SHADER_SAMPLER2, REFRACTTEXTURE, -1 );
|
||
|
|
}
|
||
|
|
BindTexture( SHADER_SAMPLER3, NORMALMAP, BUMPFRAME );
|
||
|
|
if( bReflection )
|
||
|
|
{
|
||
|
|
BindTexture( SHADER_SAMPLER4, REFLECTTEXTURE, -1 );
|
||
|
|
}
|
||
|
|
|
||
|
|
SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, REFLECTAMOUNT );
|
||
|
|
SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_1, BUMPTRANSFORM );
|
||
|
|
SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_3, REFRACTAMOUNT );
|
||
|
|
|
||
|
|
float c0[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
|
||
|
|
pShaderAPI->SetPixelShaderConstant( 0, c0, 1 );
|
||
|
|
|
||
|
|
SetPixelShaderConstant( 1, REFRACTTINT );
|
||
|
|
SetPixelShaderConstant( 4, REFLECTTINT );
|
||
|
|
|
||
|
|
float c2[4] = { 0.5f, 0.5f, 0.5f, 0.5f };
|
||
|
|
pShaderAPI->SetPixelShaderConstant( 2, c2, 1 );
|
||
|
|
|
||
|
|
// ERASE ME!
|
||
|
|
float c3[4] = { 5.0f, 0.0f, 0.0f, 0.0f };
|
||
|
|
pShaderAPI->SetPixelShaderConstant( 3, c3, 1 );
|
||
|
|
|
||
|
|
// reflection/refraction scale
|
||
|
|
float reflectionRefractionScale[4] = { params[REFLECTAMOUNT]->GetFloatValue(),
|
||
|
|
params[REFRACTAMOUNT]->GetFloatValue(), 0.0f, 0.0f };
|
||
|
|
pShaderAPI->SetPixelShaderConstant( 5, reflectionRefractionScale, 1 );
|
||
|
|
pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_4, reflectionRefractionScale, 1 );
|
||
|
|
|
||
|
|
water_ps14_Dynamic_Index vshIndex;
|
||
|
|
vshIndex.SetDOWATERFOG( pShaderAPI->GetSceneFogMode() == MATERIAL_FOG_LINEAR_BELOW_FOG_Z );
|
||
|
|
pShaderAPI->SetVertexShaderIndex( vshIndex.GetIndex() );
|
||
|
|
}
|
||
|
|
Draw();
|
||
|
|
}
|
||
|
|
|
||
|
|
enum DrawCheapType_t
|
||
|
|
{
|
||
|
|
DRAW_CHEAP_OPAQUE = 0,
|
||
|
|
DRAW_CHEAP_FRESNEL_OPAQUE,
|
||
|
|
DRAW_CHEAP_LOD_ONLY,
|
||
|
|
DRAW_CHEAP_FRESNEL_AND_LOD,
|
||
|
|
};
|
||
|
|
|
||
|
|
inline void DrawCheapWater( IMaterialVar **params, IShaderShadow* pShaderShadow,
|
||
|
|
IShaderDynamicAPI* pShaderAPI, DrawCheapType_t type )
|
||
|
|
{
|
||
|
|
SHADOW_STATE
|
||
|
|
{
|
||
|
|
SetInitialShadowState( );
|
||
|
|
|
||
|
|
// In edit mode, use nocull
|
||
|
|
if ( UsingEditor( params ) )
|
||
|
|
{
|
||
|
|
s_pShaderShadow->EnableCulling( false );
|
||
|
|
}
|
||
|
|
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER3, true );
|
||
|
|
pShaderShadow->EnableTexture( SHADER_SAMPLER4, true );
|
||
|
|
if ( (type != DRAW_CHEAP_OPAQUE) && (type != DRAW_CHEAP_FRESNEL_OPAQUE) )
|
||
|
|
{
|
||
|
|
EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA );
|
||
|
|
}
|
||
|
|
pShaderShadow->VertexShaderVertexFormat(
|
||
|
|
VERTEX_POSITION | VERTEX_NORMAL | VERTEX_TANGENT_S |
|
||
|
|
VERTEX_TANGENT_T, 1, 0, 0 );
|
||
|
|
|
||
|
|
watercheap_vs14_Static_Index vshIndex;
|
||
|
|
pShaderShadow->SetVertexShader( "WaterCheap_vs14", vshIndex.GetIndex() );
|
||
|
|
|
||
|
|
static const char *s_pPixelShader[] =
|
||
|
|
{
|
||
|
|
"WaterCheapOpaque_ps14",
|
||
|
|
"WaterCheapFresnelOpaque_ps14",
|
||
|
|
"WaterCheap_ps14",
|
||
|
|
"WaterCheapFresnel_ps14",
|
||
|
|
};
|
||
|
|
|
||
|
|
pShaderShadow->SetPixelShader( s_pPixelShader[type] );
|
||
|
|
FogToFogColor();
|
||
|
|
}
|
||
|
|
DYNAMIC_STATE
|
||
|
|
{
|
||
|
|
pShaderAPI->SetDefaultState();
|
||
|
|
BindTexture( SHADER_SAMPLER0, NORMALMAP, BUMPFRAME );
|
||
|
|
BindTexture( SHADER_SAMPLER3, ENVMAP, ENVMAPFRAME );
|
||
|
|
pShaderAPI->BindStandardTexture( SHADER_SAMPLER4, TEXTURE_NORMALIZATION_CUBEMAP );
|
||
|
|
|
||
|
|
float pCheapWaterConstants[4] = { 0, 0, 0, 0 };
|
||
|
|
if ( (type != DRAW_CHEAP_OPAQUE) && (type != DRAW_CHEAP_FRESNEL_OPAQUE) )
|
||
|
|
{
|
||
|
|
float flCheapWaterStartDistance = params[CHEAPWATERSTARTDISTANCE]->GetFloatValue();
|
||
|
|
float flCheapWaterEndDistance = params[CHEAPWATERENDDISTANCE]->GetFloatValue();
|
||
|
|
pCheapWaterConstants[0] = flCheapWaterStartDistance;
|
||
|
|
pCheapWaterConstants[1] = 1.0f / ( flCheapWaterEndDistance - flCheapWaterStartDistance );
|
||
|
|
}
|
||
|
|
pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_2, pCheapWaterConstants );
|
||
|
|
|
||
|
|
SetPixelShaderConstant( 0, FOGCOLOR );
|
||
|
|
SetPixelShaderConstant( 1, REFLECTTINT, REFLECTBLENDFACTOR );
|
||
|
|
|
||
|
|
SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, BUMPTRANSFORM );
|
||
|
|
|
||
|
|
watercheap_vs14_Dynamic_Index vshIndex;
|
||
|
|
vshIndex.SetDOWATERFOG( pShaderAPI->GetSceneFogMode() == MATERIAL_FOG_LINEAR_BELOW_FOG_Z );
|
||
|
|
pShaderAPI->SetVertexShaderIndex( vshIndex.GetIndex() );
|
||
|
|
}
|
||
|
|
Draw();
|
||
|
|
}
|
||
|
|
|
||
|
|
SHADER_DRAW
|
||
|
|
{
|
||
|
|
// NOTE: Here's what all this means.
|
||
|
|
// 1) ForceCheap means use env_cubemap only
|
||
|
|
// 2) ForceExpensive means do real reflection instead of env_cubemap.
|
||
|
|
// By default, it will do refraction and use env_cubemap for the reflection.
|
||
|
|
|
||
|
|
// Also, it will fade to cheap water at a particular distance,
|
||
|
|
// based on CheapWaterStartDistance and CheapWaterEndDistance
|
||
|
|
// * In the ForceCheap case, no fading is required
|
||
|
|
// * In the default case, it will fade based on these parameters in a single pass
|
||
|
|
// * In the expensive case, it will have to perform the fade in a separate pass.
|
||
|
|
|
||
|
|
bool bForceCheap = params[FORCECHEAP]->GetIntValue() != 0 || UsingEditor( params );
|
||
|
|
bool bForceExpensive = params[FORCEEXPENSIVE]->GetIntValue() != 0;
|
||
|
|
bool bRefraction = params[REFRACTTEXTURE]->IsTexture();
|
||
|
|
bool bReflection = bForceExpensive && params[REFLECTTEXTURE]->IsTexture();
|
||
|
|
DrawCheapType_t type = params[NOFRESNEL]->GetIntValue() ? DRAW_CHEAP_OPAQUE : DRAW_CHEAP_FRESNEL_OPAQUE;
|
||
|
|
if( !bForceCheap && (bRefraction || bReflection) )
|
||
|
|
{
|
||
|
|
DrawReflectionRefraction( params, pShaderShadow, pShaderAPI, bReflection, bRefraction );
|
||
|
|
if ( !bReflection )
|
||
|
|
{
|
||
|
|
type = params[NOFRESNEL]->GetIntValue() ? DRAW_CHEAP_LOD_ONLY : DRAW_CHEAP_FRESNEL_AND_LOD;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
type = DRAW_CHEAP_LOD_ONLY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Use $decal to see if we are a decal or not. . if we are, then don't bother
|
||
|
|
// drawing the cheap version for now since we don't have access to env_cubemap
|
||
|
|
if( params[ENVMAP]->IsTexture() && !IS_FLAG_SET( MATERIAL_VAR_DECAL ) && !bReflection )
|
||
|
|
{
|
||
|
|
DrawCheapWater( params, pShaderShadow, pShaderAPI, type );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
END_SHADER
|
||
|
|
|