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Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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source-engine/materialsystem/stdshaders/worldtwotextureblend.cpp

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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $Header: $
// $NoKeywords: $
//===========================================================================//
#include "BaseVSShader.h"
#include "convar.h"
#include "lightmappedgeneric_vs20.inc"
#include "WorldTwoTextureBlend_ps20.inc"
#include "WorldTwoTextureBlend_ps20b.inc"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
extern ConVar r_flashlight_version2;
// FIXME: Need to make a dx9 version so that "CENTROID" works.
BEGIN_VS_SHADER( WorldTwoTextureBlend,
"Help for WorldTwoTextureBlend" )
BEGIN_SHADER_PARAMS
SHADER_PARAM_OVERRIDE( BASETEXTURE, SHADER_PARAM_TYPE_TEXTURE, "shadertest/WorldTwoTextureBlend", "iris texture", 0 )
SHADER_PARAM( ALBEDO, SHADER_PARAM_TYPE_TEXTURE, "shadertest/WorldTwoTextureBlend", "albedo (Base texture with no baked lighting)" )
SHADER_PARAM( SELFILLUMTINT, SHADER_PARAM_TYPE_COLOR, "[1 1 1]", "Self-illumination tint" )
SHADER_PARAM( DETAIL, SHADER_PARAM_TYPE_TEXTURE, "shadertest/WorldTwoTextureBlend_detail", "detail texture" )
SHADER_PARAM( DETAILFRAME, SHADER_PARAM_TYPE_INTEGER, "0", "frame number for $detail" )
SHADER_PARAM( DETAILSCALE, SHADER_PARAM_TYPE_FLOAT, "1.0", "scale of the detail texture" )
SHADER_PARAM( DETAIL_ALPHA_MASK_BASE_TEXTURE, SHADER_PARAM_TYPE_BOOL, "0",
"If this is 1, then when detail alpha=0, no base texture is blended and when "
"detail alpha=1, you get detail*base*lightmap" )
SHADER_PARAM( BUMPMAP, SHADER_PARAM_TYPE_TEXTURE, "models/shadertest/shader1_normal", "bump 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( NODIFFUSEBUMPLIGHTING, SHADER_PARAM_TYPE_INTEGER, "0", "0 == Use diffuse bump lighting, 1 = No diffuse bump lighting" )
SHADER_PARAM( SEAMLESS_SCALE, SHADER_PARAM_TYPE_FLOAT, "0", "Scale factor for 'seamless' texture mapping. 0 means to use ordinary mapping" )
END_SHADER_PARAMS
SHADER_FALLBACK
{
if( g_pHardwareConfig->GetDXSupportLevel() < 80 )
return "WorldTwoTextureBlend_DX6";
if( g_pHardwareConfig->GetDXSupportLevel() < 90 )
return "WorldTwoTextureBlend_DX8";
return 0;
}
SHADER_INIT_PARAMS()
{
if( !params[DETAIL_ALPHA_MASK_BASE_TEXTURE]->IsDefined() )
{
params[DETAIL_ALPHA_MASK_BASE_TEXTURE]->SetIntValue( 0 );
}
if ( g_pHardwareConfig->SupportsBorderColor() )
{
params[FLASHLIGHTTEXTURE]->SetStringValue( "effects/flashlight_border" );
}
else
{
params[FLASHLIGHTTEXTURE]->SetStringValue( "effects/flashlight001" );
}
// Write over $basetexture with $albedo if we are going to be using diffuse normal mapping.
if( g_pConfig->UseBumpmapping() && params[BUMPMAP]->IsDefined() && params[ALBEDO]->IsDefined() &&
params[BASETEXTURE]->IsDefined() &&
!( params[NODIFFUSEBUMPLIGHTING]->IsDefined() && params[NODIFFUSEBUMPLIGHTING]->GetIntValue() ) )
{
params[BASETEXTURE]->SetStringValue( params[ALBEDO]->GetStringValue() );
}
if( !params[NODIFFUSEBUMPLIGHTING]->IsDefined() )
{
params[NODIFFUSEBUMPLIGHTING]->SetIntValue( 0 );
}
if( !params[SELFILLUMTINT]->IsDefined() )
{
params[SELFILLUMTINT]->SetVecValue( 1.0f, 1.0f, 1.0f );
}
if( !params[DETAILSCALE]->IsDefined() )
{
params[DETAILSCALE]->SetFloatValue( 4.0f );
}
if( !params[BUMPFRAME]->IsDefined() )
{
params[BUMPFRAME]->SetIntValue( 0 );
}
if( !params[DETAILFRAME]->IsDefined() )
{
params[DETAILFRAME]->SetIntValue( 0 );
}
// No texture means no self-illum or env mask in base alpha
if ( !params[BASETEXTURE]->IsDefined() )
{
CLEAR_FLAGS( MATERIAL_VAR_SELFILLUM );
CLEAR_FLAGS( MATERIAL_VAR_BASEALPHAENVMAPMASK );
}
// If in decal mode, no debug override...
if (IS_FLAG_SET(MATERIAL_VAR_DECAL))
{
SET_FLAGS( MATERIAL_VAR_NO_DEBUG_OVERRIDE );
}
SET_FLAGS2( MATERIAL_VAR2_LIGHTING_LIGHTMAP );
if( g_pConfig->UseBumpmapping() && params[BUMPMAP]->IsDefined() && (params[NODIFFUSEBUMPLIGHTING]->GetIntValue() == 0) )
{
SET_FLAGS2( MATERIAL_VAR2_LIGHTING_BUMPED_LIGHTMAP );
}
}
SHADER_INIT
{
if( g_pConfig->UseBumpmapping() && params[BUMPMAP]->IsDefined() )
{
LoadBumpMap( BUMPMAP );
}
if (params[BASETEXTURE]->IsDefined())
{
LoadTexture( BASETEXTURE, TEXTUREFLAGS_SRGB );
if (!params[BASETEXTURE]->GetTextureValue()->IsTranslucent())
{
CLEAR_FLAGS( MATERIAL_VAR_SELFILLUM );
CLEAR_FLAGS( MATERIAL_VAR_BASEALPHAENVMAPMASK );
}
}
if (params[DETAIL]->IsDefined())
{
LoadTexture( DETAIL );
}
LoadTexture( FLASHLIGHTTEXTURE, TEXTUREFLAGS_SRGB );
// Don't alpha test if the alpha channel is used for other purposes
if (IS_FLAG_SET(MATERIAL_VAR_SELFILLUM) || IS_FLAG_SET(MATERIAL_VAR_BASEALPHAENVMAPMASK) )
{
CLEAR_FLAGS( MATERIAL_VAR_ALPHATEST );
}
// We always need this because of the flashlight.
SET_FLAGS2( MATERIAL_VAR2_NEEDS_TANGENT_SPACES );
}
void DrawPass( IMaterialVar** params, IShaderDynamicAPI *pShaderAPI,
IShaderShadow* pShaderShadow, bool hasFlashlight, VertexCompressionType_t vertexCompression )
{
bool hasBump = params[BUMPMAP]->IsTexture();
bool hasDiffuseBumpmap = hasBump && (params[NODIFFUSEBUMPLIGHTING]->GetIntValue() == 0);
bool hasBaseTexture = params[BASETEXTURE]->IsTexture();
bool hasDetailTexture = /*!hasBump && */params[DETAIL]->IsTexture();
bool hasVertexColor = IS_FLAG_SET( MATERIAL_VAR_VERTEXCOLOR ) != 0;
bool bHasDetailAlpha = params[DETAIL_ALPHA_MASK_BASE_TEXTURE]->GetIntValue() != 0;
bool bIsAlphaTested = IS_FLAG_SET( MATERIAL_VAR_ALPHATEST ) != 0;
BlendType_t nBlendType = EvaluateBlendRequirements( BASETEXTURE, true );
bool bFullyOpaque = (nBlendType != BT_BLENDADD) && (nBlendType != BT_BLEND) && !IS_FLAG_SET(MATERIAL_VAR_ALPHATEST); //dest alpha is free for special use
bool bSeamlessMapping = params[SEAMLESS_SCALE]->GetFloatValue() != 0.0;
SHADOW_STATE
{
int nShadowFilterMode = 0;
// Alpha test: FIXME: shouldn't this be handled in Shader_t::SetInitialShadowState
pShaderShadow->EnableAlphaTest( bIsAlphaTested );
if( hasFlashlight )
{
if ( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
nShadowFilterMode = g_pHardwareConfig->GetShadowFilterMode(); // Based upon vendor and device dependent formats
}
SetAdditiveBlendingShadowState( BASETEXTURE, true );
pShaderShadow->EnableDepthWrites( false );
// Be sure not to write to dest alpha
pShaderShadow->EnableAlphaWrites( false );
}
else
{
SetDefaultBlendingShadowState( BASETEXTURE, true );
}
unsigned int flags = VERTEX_POSITION;
if( hasBaseTexture )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, true );
}
// if( hasLightmap )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
pShaderShadow->EnableSRGBRead( SHADER_SAMPLER1, g_pHardwareConfig->GetHDRType() == HDR_TYPE_NONE );
}
if( hasFlashlight )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER2, true );
pShaderShadow->EnableTexture( SHADER_SAMPLER7, true );
pShaderShadow->SetShadowDepthFiltering( SHADER_SAMPLER7 );
flags |= VERTEX_TANGENT_S | VERTEX_TANGENT_T | VERTEX_NORMAL;
}
if( hasDetailTexture )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER3, true );
}
if( hasBump )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER4, true );
}
if( hasVertexColor )
{
flags |= VERTEX_COLOR;
}
// Normalizing cube map
pShaderShadow->EnableTexture( SHADER_SAMPLER6, true );
// texcoord0 : base texcoord
// texcoord1 : lightmap texcoord
// texcoord2 : lightmap texcoord offset
int numTexCoords = 2;
if( hasBump )
{
numTexCoords = 3;
}
pShaderShadow->VertexShaderVertexFormat( flags, numTexCoords, 0, 0 );
// Pre-cache pixel shaders
bool hasSelfIllum = IS_FLAG_SET( MATERIAL_VAR_SELFILLUM );
pShaderShadow->EnableSRGBWrite( true );
DECLARE_STATIC_VERTEX_SHADER( lightmappedgeneric_vs20 );
SET_STATIC_VERTEX_SHADER_COMBO( ENVMAP_MASK, false );
SET_STATIC_VERTEX_SHADER_COMBO( BUMPMASK, false );
SET_STATIC_VERTEX_SHADER_COMBO( TANGENTSPACE, hasFlashlight );
SET_STATIC_VERTEX_SHADER_COMBO( BUMPMAP, hasBump );
SET_STATIC_VERTEX_SHADER_COMBO( DIFFUSEBUMPMAP, hasDiffuseBumpmap );
SET_STATIC_VERTEX_SHADER_COMBO( VERTEXCOLOR, hasVertexColor );
SET_STATIC_VERTEX_SHADER_COMBO( VERTEXALPHATEXBLENDFACTOR, false );
SET_STATIC_VERTEX_SHADER_COMBO( RELIEF_MAPPING, 0 ); //( bumpmap_variant == 2 )?1:0);
SET_STATIC_VERTEX_SHADER_COMBO( SEAMLESS, bSeamlessMapping ); //( bumpmap_variant == 2 )?1:0);
#ifdef _X360
SET_STATIC_VERTEX_SHADER_COMBO( FLASHLIGHT, hasFlashlight );
#endif
SET_STATIC_VERTEX_SHADER( lightmappedgeneric_vs20 );
if ( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
DECLARE_STATIC_PIXEL_SHADER( worldtwotextureblend_ps20b );
SET_STATIC_PIXEL_SHADER_COMBO( DETAILTEXTURE, hasDetailTexture );
SET_STATIC_PIXEL_SHADER_COMBO( BUMPMAP, hasBump );
SET_STATIC_PIXEL_SHADER_COMBO( DIFFUSEBUMPMAP, hasDiffuseBumpmap );
SET_STATIC_PIXEL_SHADER_COMBO( VERTEXCOLOR, hasVertexColor );
SET_STATIC_PIXEL_SHADER_COMBO( SELFILLUM, hasSelfIllum );
SET_STATIC_PIXEL_SHADER_COMBO( DETAIL_ALPHA_MASK_BASE_TEXTURE, bHasDetailAlpha );
SET_STATIC_PIXEL_SHADER_COMBO( FLASHLIGHT, hasFlashlight );
SET_STATIC_PIXEL_SHADER_COMBO( SEAMLESS, bSeamlessMapping );
SET_STATIC_PIXEL_SHADER_COMBO( FLASHLIGHTDEPTHFILTERMODE, nShadowFilterMode );
SET_STATIC_PIXEL_SHADER( worldtwotextureblend_ps20b );
}
else
{
DECLARE_STATIC_PIXEL_SHADER( worldtwotextureblend_ps20 );
SET_STATIC_PIXEL_SHADER_COMBO( DETAILTEXTURE, hasDetailTexture );
SET_STATIC_PIXEL_SHADER_COMBO( BUMPMAP, hasBump );
SET_STATIC_PIXEL_SHADER_COMBO( DIFFUSEBUMPMAP, hasDiffuseBumpmap );
SET_STATIC_PIXEL_SHADER_COMBO( VERTEXCOLOR, hasVertexColor );
SET_STATIC_PIXEL_SHADER_COMBO( SELFILLUM, hasSelfIllum );
SET_STATIC_PIXEL_SHADER_COMBO( DETAIL_ALPHA_MASK_BASE_TEXTURE, bHasDetailAlpha );
SET_STATIC_PIXEL_SHADER_COMBO( FLASHLIGHT, hasFlashlight );
SET_STATIC_PIXEL_SHADER_COMBO( SEAMLESS, bSeamlessMapping );
SET_STATIC_PIXEL_SHADER( worldtwotextureblend_ps20 );
}
// HACK HACK HACK - enable alpha writes all the time so that we have them for
// underwater stuff.
// But only do it if we're not using the alpha already for translucency
pShaderShadow->EnableAlphaWrites( bFullyOpaque );
if( hasFlashlight )
{
FogToBlack();
}
else
{
DefaultFog();
}
}
DYNAMIC_STATE
{
if( hasBaseTexture )
{
BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
}
else
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER0, TEXTURE_WHITE );
}
// if( hasLightmap )
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER1, TEXTURE_LIGHTMAP );
}
bool bFlashlightShadows = false;
if( hasFlashlight )
{
VMatrix worldToTexture;
ITexture *pFlashlightDepthTexture;
FlashlightState_t state = pShaderAPI->GetFlashlightStateEx( worldToTexture, &pFlashlightDepthTexture );
bFlashlightShadows = state.m_bEnableShadows && ( pFlashlightDepthTexture != NULL );
SetFlashLightColorFromState( state, pShaderAPI );
BindTexture( SHADER_SAMPLER2, state.m_pSpotlightTexture, state.m_nSpotlightTextureFrame );
if( pFlashlightDepthTexture && g_pConfig->ShadowDepthTexture() )
{
BindTexture( SHADER_SAMPLER7, pFlashlightDepthTexture );
}
}
if( hasDetailTexture )
{
BindTexture( SHADER_SAMPLER3, DETAIL, DETAILFRAME );
}
if( hasBump )
{
if( !g_pConfig->m_bFastNoBump )
{
BindTexture( SHADER_SAMPLER4, BUMPMAP, BUMPFRAME );
}
else
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER4, TEXTURE_NORMALMAP_FLAT );
}
}
pShaderAPI->BindStandardTexture( SHADER_SAMPLER6, TEXTURE_NORMALIZATION_CUBEMAP_SIGNED );
// If we don't have a texture transform, we don't have
// to set vertex shader constants or run vertex shader instructions
// for the texture transform.
bool bHasTextureTransform =
!( params[BASETEXTURETRANSFORM]->MatrixIsIdentity() &&
params[BUMPTRANSFORM]->MatrixIsIdentity() );
bool bVertexShaderFastPath = !bHasTextureTransform;
if( params[DETAIL]->IsTexture() )
{
bVertexShaderFastPath = false;
}
if( pShaderAPI->GetIntRenderingParameter(INT_RENDERPARM_ENABLE_FIXED_LIGHTING)!=0 )
{
bVertexShaderFastPath = false;
}
float color[4] = { 1.0, 1.0, 1.0, 1.0 };
ComputeModulationColor( color );
if( !( bVertexShaderFastPath && color[0] == 1.0f && color[1] == 1.0f && color[2] == 1.0f && color[3] == 1.0f ) )
{
bVertexShaderFastPath = false;
s_pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_MODULATION_COLOR, color );
if (! bSeamlessMapping)
SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, BASETEXTURETRANSFORM );
if( hasBump && !bHasDetailAlpha )
{
SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_2, BUMPTRANSFORM );
Assert( !hasDetailTexture );
}
}
MaterialFogMode_t fogType = pShaderAPI->GetSceneFogMode();
DECLARE_DYNAMIC_VERTEX_SHADER( lightmappedgeneric_vs20 );
SET_DYNAMIC_VERTEX_SHADER_COMBO( DOWATERFOG, fogType == MATERIAL_FOG_LINEAR_BELOW_FOG_Z );
SET_DYNAMIC_VERTEX_SHADER_COMBO( FASTPATH, bVertexShaderFastPath );
SET_DYNAMIC_VERTEX_SHADER_COMBO(
LIGHTING_PREVIEW, pShaderAPI->GetIntRenderingParameter(INT_RENDERPARM_ENABLE_FIXED_LIGHTING)!=0);
SET_DYNAMIC_VERTEX_SHADER( lightmappedgeneric_vs20 );
bool bWriteDepthToAlpha;
bool bWriteWaterFogToAlpha;
if( bFullyOpaque )
{
bWriteDepthToAlpha = pShaderAPI->ShouldWriteDepthToDestAlpha();
bWriteWaterFogToAlpha = (fogType == MATERIAL_FOG_LINEAR_BELOW_FOG_Z);
AssertMsg( !(bWriteDepthToAlpha && bWriteWaterFogToAlpha), "Can't write two values to alpha at the same time." );
}
else
{
//can't write a special value to dest alpha if we're actually using as-intended alpha
bWriteDepthToAlpha = false;
bWriteWaterFogToAlpha = false;
}
if ( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
DECLARE_DYNAMIC_PIXEL_SHADER( worldtwotextureblend_ps20b );
// Don't write fog to alpha if we're using translucency
SET_DYNAMIC_PIXEL_SHADER_COMBO( WRITEWATERFOGTODESTALPHA, bWriteWaterFogToAlpha );
SET_DYNAMIC_PIXEL_SHADER_COMBO( WRITE_DEPTH_TO_DESTALPHA, bWriteDepthToAlpha );
SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
SET_DYNAMIC_PIXEL_SHADER_COMBO( FLASHLIGHTSHADOWS, bFlashlightShadows );
SET_DYNAMIC_PIXEL_SHADER( worldtwotextureblend_ps20b );
}
else
{
DECLARE_DYNAMIC_PIXEL_SHADER( worldtwotextureblend_ps20 );
// Don't write fog to alpha if we're using translucency
SET_DYNAMIC_PIXEL_SHADER_COMBO( WRITEWATERFOGTODESTALPHA, (fogType == MATERIAL_FOG_LINEAR_BELOW_FOG_Z) &&
(nBlendType != BT_BLENDADD) && (nBlendType != BT_BLEND) && !bIsAlphaTested );
SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
SET_DYNAMIC_PIXEL_SHADER( worldtwotextureblend_ps20 );
}
// always set the transform for detail textures since I'm assuming that you'll
// always have a detailscale.
if( hasDetailTexture )
{
SetVertexShaderTextureScaledTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_2, BASETEXTURETRANSFORM, DETAILSCALE );
Assert( !( hasBump && !bHasDetailAlpha ) );
}
SetPixelShaderConstantGammaToLinear( 7, SELFILLUMTINT );
float eyePos[4];
pShaderAPI->GetWorldSpaceCameraPosition( eyePos );
pShaderAPI->SetPixelShaderConstant( 10, eyePos, 1 );
pShaderAPI->SetPixelShaderFogParams( 11 );
if ( bSeamlessMapping )
{
float map_scale[4]={ params[SEAMLESS_SCALE]->GetFloatValue(),0,0,0};
pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, map_scale );
}
if( hasFlashlight )
{
VMatrix worldToTexture;
const FlashlightState_t &flashlightState = pShaderAPI->GetFlashlightState( worldToTexture );
// Set the flashlight attenuation factors
float atten[4];
atten[0] = flashlightState.m_fConstantAtten;
atten[1] = flashlightState.m_fLinearAtten;
atten[2] = flashlightState.m_fQuadraticAtten;
atten[3] = flashlightState.m_FarZ;
pShaderAPI->SetPixelShaderConstant( 20, atten, 1 );
// Set the flashlight origin
float pos[4];
pos[0] = flashlightState.m_vecLightOrigin[0];
pos[1] = flashlightState.m_vecLightOrigin[1];
pos[2] = flashlightState.m_vecLightOrigin[2];
pos[3] = 1.0f;
pShaderAPI->SetPixelShaderConstant( 15, pos, 1 );
pShaderAPI->SetPixelShaderConstant( 16, worldToTexture.Base(), 4 );
}
}
Draw();
}
SHADER_DRAW
{
bool bHasFlashlight = UsingFlashlight( params );
if ( bHasFlashlight && ( IsX360() || r_flashlight_version2.GetInt() ) )
{
DrawPass( params, pShaderAPI, pShaderShadow, false, vertexCompression );
SHADOW_STATE
{
SetInitialShadowState( );
}
}
DrawPass( params, pShaderAPI, pShaderShadow, bHasFlashlight, vertexCompression );
}
END_SHADER