Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//
//===========================================================================//
#include "BaseVSShader.h"
#include "example_model_dx9_helper.h"
#include "convar.h"
#include "cpp_shader_constant_register_map.h"
#include "example_model_vs20.inc"
#include "example_model_ps20b.inc"
#include "commandbuilder.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
static ConVar mat_fullbright( "mat_fullbright", "0", FCVAR_CHEAT );
static ConVar r_lightwarpidentity( "r_lightwarpidentity", "0", FCVAR_CHEAT );
static ConVar r_rimlight( "r_rimlight", "1", FCVAR_NONE );
// Textures may be bound to the following samplers:
// SHADER_SAMPLER0 Base (Albedo) / Gloss in alpha
// SHADER_SAMPLER4 Flashlight Shadow Depth Map
// SHADER_SAMPLER5 Normalization cube map
// SHADER_SAMPLER6 Flashlight Cookie
//-----------------------------------------------------------------------------
// Initialize shader parameters
//-----------------------------------------------------------------------------
void InitParamsExampleModel_DX9( CBaseVSShader *pShader, IMaterialVar** params, const char *pMaterialName, ExampleModel_DX9_Vars_t &info )
{
// FLASHLIGHTFIXME: Do ShaderAPI::BindFlashlightTexture
Assert( info.m_nFlashlightTexture >= 0 );
if ( g_pHardwareConfig->SupportsBorderColor() )
{
params[FLASHLIGHTTEXTURE]->SetStringValue( "effects/flashlight_border" );
}
else
{
params[FLASHLIGHTTEXTURE]->SetStringValue( "effects/flashlight001" );
}
// This shader can be used with hw skinning
SET_FLAGS2( MATERIAL_VAR2_SUPPORTS_HW_SKINNING );
SET_FLAGS2( MATERIAL_VAR2_LIGHTING_VERTEX_LIT );
}
//-----------------------------------------------------------------------------
// Initialize shader
//-----------------------------------------------------------------------------
void InitExampleModel_DX9( CBaseVSShader *pShader, IMaterialVar** params, ExampleModel_DX9_Vars_t &info )
{
Assert( info.m_nFlashlightTexture >= 0 );
pShader->LoadTexture( info.m_nFlashlightTexture, TEXTUREFLAGS_SRGB );
bool bIsBaseTextureTranslucent = false;
if ( params[info.m_nBaseTexture]->IsDefined() )
{
pShader->LoadTexture( info.m_nBaseTexture, TEXTUREFLAGS_SRGB );
if ( params[info.m_nBaseTexture]->GetTextureValue()->IsTranslucent() )
{
bIsBaseTextureTranslucent = true;
}
}
}
class CExampleModel_DX9_Context : public CBasePerMaterialContextData
{
public:
CCommandBufferBuilder< CFixedCommandStorageBuffer< 800 > > m_SemiStaticCmdsOut;
bool m_bFastPath;
};
//-----------------------------------------------------------------------------
// Draws the shader
//-----------------------------------------------------------------------------
void DrawExampleModel_DX9_Internal( CBaseVSShader *pShader, IMaterialVar** params, IShaderDynamicAPI *pShaderAPI, IShaderShadow* pShaderShadow,
bool bHasFlashlight, ExampleModel_DX9_Vars_t &info, VertexCompressionType_t vertexCompression,
CBasePerMaterialContextData **pContextDataPtr )
{
bool bHasBaseTexture = (info.m_nBaseTexture != -1) && params[info.m_nBaseTexture]->IsTexture();
bool bIsAlphaTested = IS_FLAG_SET( MATERIAL_VAR_ALPHATEST ) != 0;
BlendType_t nBlendType= pShader->EvaluateBlendRequirements( info.m_nBaseTexture, true );
bool bFullyOpaque = ( nBlendType != BT_BLENDADD ) && ( nBlendType != BT_BLEND ) && !bIsAlphaTested && !bHasFlashlight;
CExampleModel_DX9_Context *pContextData = reinterpret_cast< CExampleModel_DX9_Context *> ( *pContextDataPtr );
if ( !pContextData )
{
pContextData = new CExampleModel_DX9_Context;
*pContextDataPtr = pContextData;
}
if( pShader->IsSnapshotting() )
{
pShaderShadow->EnableAlphaTest( bIsAlphaTested );
if( info.m_nAlphaTestReference != -1 && params[info.m_nAlphaTestReference]->GetFloatValue() > 0.0f )
{
pShaderShadow->AlphaFunc( SHADER_ALPHAFUNC_GEQUAL, params[info.m_nAlphaTestReference]->GetFloatValue() );
}
int nShadowFilterMode = 0;
if( bHasFlashlight )
{
if (params[info.m_nBaseTexture]->IsTexture())
{
pShader->SetAdditiveBlendingShadowState( info.m_nBaseTexture, true );
}
if( bIsAlphaTested )
{
// disable alpha test and use the zfunc zequals since alpha isn't guaranteed to
// be the same on both the regular pass and the flashlight pass.
pShaderShadow->EnableAlphaTest( false );
pShaderShadow->DepthFunc( SHADER_DEPTHFUNC_EQUAL );
}
pShaderShadow->EnableBlending( true );
pShaderShadow->EnableDepthWrites( false );
// Be sure not to write to dest alpha
pShaderShadow->EnableAlphaWrites( false );
nShadowFilterMode = g_pHardwareConfig->GetShadowFilterMode(); // Based upon vendor and device dependent formats
}
else // not flashlight pass
{
if (params[info.m_nBaseTexture]->IsTexture())
{
pShader->SetDefaultBlendingShadowState( info.m_nBaseTexture, true );
}
}
unsigned int flags = VERTEX_POSITION | VERTEX_NORMAL;
int userDataSize = 0;
// Always enable...will bind white if nothing specified...
pShaderShadow->EnableTexture( SHADER_SAMPLER0, true ); // Base (albedo) map
pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, true );
if( bHasFlashlight )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER4, true ); // Shadow depth map
pShaderShadow->SetShadowDepthFiltering( SHADER_SAMPLER4 );
pShaderShadow->EnableSRGBRead( SHADER_SAMPLER4, false );
pShaderShadow->EnableTexture( SHADER_SAMPLER5, true ); // Noise map
pShaderShadow->EnableTexture( SHADER_SAMPLER6, true ); // Flashlight cookie
pShaderShadow->EnableSRGBRead( SHADER_SAMPLER6, true );
userDataSize = 4; // tangent S
}
// Always enable, since flat normal will be bound
pShaderShadow->EnableTexture( SHADER_SAMPLER3, true ); // Normal map
userDataSize = 4; // tangent S
pShaderShadow->EnableTexture( SHADER_SAMPLER5, true ); // Normalizing cube map
pShaderShadow->EnableSRGBWrite( true );
// texcoord0 : base texcoord, texcoord2 : decal hw morph delta
int pTexCoordDim[3] = { 2, 0, 3 };
int nTexCoordCount = 1;
// This shader supports compressed vertices, so OR in that flag:
flags |= VERTEX_FORMAT_COMPRESSED;
pShaderShadow->VertexShaderVertexFormat( flags, nTexCoordCount, pTexCoordDim, userDataSize );
DECLARE_STATIC_VERTEX_SHADER( example_model_vs20 );
SET_STATIC_VERTEX_SHADER( example_model_vs20 );
// Assume we're only going to get in here if we support 2b
DECLARE_STATIC_PIXEL_SHADER( example_model_ps20b );
SET_STATIC_PIXEL_SHADER_COMBO( FLASHLIGHT, bHasFlashlight );
SET_STATIC_PIXEL_SHADER_COMBO( FLASHLIGHTDEPTHFILTERMODE, nShadowFilterMode );
SET_STATIC_PIXEL_SHADER_COMBO( CONVERT_TO_SRGB, 0 );
SET_STATIC_PIXEL_SHADER( example_model_ps20b );
if( bHasFlashlight )
{
pShader->FogToBlack();
}
else
{
pShader->DefaultFog();
}
// HACK HACK HACK - enable alpha writes all the time so that we have them for underwater stuff
pShaderShadow->EnableAlphaWrites( bFullyOpaque );
}
else // not snapshotting -- begin dynamic state
{
bool bLightingOnly = mat_fullbright.GetInt() == 2 && !IS_FLAG_SET( MATERIAL_VAR_NO_DEBUG_OVERRIDE );
if( bHasBaseTexture )
{
pShader->BindTexture( SHADER_SAMPLER0, info.m_nBaseTexture, info.m_nBaseTextureFrame );
}
else
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER0, TEXTURE_WHITE );
}
LightState_t lightState = { 0, false, false };
bool bFlashlightShadows = false;
if( bHasFlashlight )
{
Assert( info.m_nFlashlightTexture >= 0 && info.m_nFlashlightTextureFrame >= 0 );
pShader->BindTexture( SHADER_SAMPLER6, info.m_nFlashlightTexture, info.m_nFlashlightTextureFrame );
VMatrix worldToTexture;
ITexture *pFlashlightDepthTexture;
FlashlightState_t state = pShaderAPI->GetFlashlightStateEx( worldToTexture, &pFlashlightDepthTexture );
bFlashlightShadows = state.m_bEnableShadows && ( pFlashlightDepthTexture != NULL );
SetFlashLightColorFromState( state, pShaderAPI, PSREG_FLASHLIGHT_COLOR );
if( pFlashlightDepthTexture && g_pConfig->ShadowDepthTexture() && state.m_bEnableShadows )
{
pShader->BindTexture( SHADER_SAMPLER4, pFlashlightDepthTexture, 0 );
pShaderAPI->BindStandardTexture( SHADER_SAMPLER5, TEXTURE_SHADOW_NOISE_2D );
}
}
else // no flashlight
{
pShaderAPI->GetDX9LightState( &lightState );
}
MaterialFogMode_t fogType = pShaderAPI->GetSceneFogMode();
int fogIndex = ( fogType == MATERIAL_FOG_LINEAR_BELOW_FOG_Z ) ? 1 : 0;
int numBones = pShaderAPI->GetCurrentNumBones();
bool bWriteDepthToAlpha = false;
bool bWriteWaterFogToAlpha = false;
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." );
}
DECLARE_DYNAMIC_VERTEX_SHADER( example_model_vs20 );
SET_DYNAMIC_VERTEX_SHADER_COMBO( DOWATERFOG, fogIndex );
SET_DYNAMIC_VERTEX_SHADER_COMBO( SKINNING, numBones > 0 );
SET_DYNAMIC_VERTEX_SHADER_COMBO( LIGHTING_PREVIEW, pShaderAPI->GetIntRenderingParameter(INT_RENDERPARM_ENABLE_FIXED_LIGHTING)!=0);
SET_DYNAMIC_VERTEX_SHADER_COMBO( COMPRESSED_VERTS, (int)vertexCompression );
SET_DYNAMIC_VERTEX_SHADER_COMBO( NUM_LIGHTS, lightState.m_nNumLights );
SET_DYNAMIC_VERTEX_SHADER( example_model_vs20 );
DECLARE_DYNAMIC_PIXEL_SHADER( example_model_ps20b );
SET_DYNAMIC_PIXEL_SHADER_COMBO( NUM_LIGHTS, lightState.m_nNumLights );
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( example_model_ps20b );
pShader->SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, info.m_nBaseTextureTransform );
pShader->SetModulationPixelShaderDynamicState_LinearColorSpace( 1 );
pShader->SetAmbientCubeDynamicStateVertexShader();
if( !bHasFlashlight )
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER5, TEXTURE_NORMALIZATION_CUBEMAP_SIGNED );
}
pShaderAPI->SetPixelShaderStateAmbientLightCube( PSREG_AMBIENT_CUBE, !lightState.m_bAmbientLight ); // Force to black if not bAmbientLight
pShaderAPI->CommitPixelShaderLighting( PSREG_LIGHT_INFO_ARRAY );
// handle mat_fullbright 2 (diffuse lighting only)
if( bLightingOnly )
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER0, TEXTURE_GREY );
}
pShaderAPI->SetPixelShaderFogParams( PSREG_FOG_PARAMS );
if( bHasFlashlight )
{
VMatrix worldToTexture;
float atten[4], pos[4], tweaks[4];
const FlashlightState_t &flashlightState = pShaderAPI->GetFlashlightState( worldToTexture );
SetFlashLightColorFromState( flashlightState, pShaderAPI, PSREG_FLASHLIGHT_COLOR );
pShader->BindTexture( SHADER_SAMPLER6, flashlightState.m_pSpotlightTexture, flashlightState.m_nSpotlightTextureFrame );
atten[0] = flashlightState.m_fConstantAtten; // Set the flashlight attenuation factors
atten[1] = flashlightState.m_fLinearAtten;
atten[2] = flashlightState.m_fQuadraticAtten;
atten[3] = flashlightState.m_FarZ;
pShaderAPI->SetPixelShaderConstant( PSREG_FLASHLIGHT_ATTENUATION, atten, 1 );
pos[0] = flashlightState.m_vecLightOrigin[0]; // Set the flashlight origin
pos[1] = flashlightState.m_vecLightOrigin[1];
pos[2] = flashlightState.m_vecLightOrigin[2];
pShaderAPI->SetPixelShaderConstant( PSREG_FLASHLIGHT_POSITION_RIM_BOOST, pos, 1 );
pShaderAPI->SetPixelShaderConstant( PSREG_FLASHLIGHT_TO_WORLD_TEXTURE, worldToTexture.Base(), 4 );
// Tweaks associated with a given flashlight
tweaks[0] = ShadowFilterFromState( flashlightState );
tweaks[1] = ShadowAttenFromState( flashlightState );
pShader->HashShadow2DJitter( flashlightState.m_flShadowJitterSeed, &tweaks[2], &tweaks[3] );
pShaderAPI->SetPixelShaderConstant( PSREG_ENVMAP_TINT__SHADOW_TWEAKS, tweaks, 1 );
// Dimensions of screen, used for screen-space noise map sampling
float vScreenScale[4] = {1280.0f / 32.0f, 720.0f / 32.0f, 0, 0};
int nWidth, nHeight;
pShaderAPI->GetBackBufferDimensions( nWidth, nHeight );
vScreenScale[0] = (float) nWidth / 32.0f;
vScreenScale[1] = (float) nHeight / 32.0f;
pShaderAPI->SetPixelShaderConstant( PSREG_FLASHLIGHT_SCREEN_SCALE, vScreenScale, 1 );
}
}
pShader->Draw();
}
//-----------------------------------------------------------------------------
// Draws the shader
//-----------------------------------------------------------------------------
void DrawExampleModel_DX9( CBaseVSShader *pShader, IMaterialVar** params, IShaderDynamicAPI *pShaderAPI, IShaderShadow* pShaderShadow,
ExampleModel_DX9_Vars_t &info, VertexCompressionType_t vertexCompression, CBasePerMaterialContextData **pContextDataPtr )
{
bool bHasFlashlight = pShader->UsingFlashlight( params );
if ( bHasFlashlight )
{
DrawExampleModel_DX9_Internal( pShader, params, pShaderAPI, pShaderShadow, false, info, vertexCompression, pContextDataPtr++ );
if ( pShaderShadow )
{
pShader->SetInitialShadowState( );
}
}
DrawExampleModel_DX9_Internal( pShader, params, pShaderAPI, pShaderShadow, bHasFlashlight, info, vertexCompression, pContextDataPtr );
}