191 lines
7.3 KiB
C++
191 lines
7.3 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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#include "BaseVSShader.h"
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#include "mathlib/vmatrix.h"
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#include "portal_refract_helper.h"
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#include "convar.h"
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// Auto generated inc files
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#include "portal_refract_vs20.inc"
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#include "portal_refract_ps20.inc"
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#include "portal_refract_ps20b.inc"
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void InitParamsPortalRefract( CBaseVSShader *pShader, IMaterialVar** params, const char *pMaterialName, PortalRefractVars_t &info )
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{
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// Set material flags
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SET_FLAGS( MATERIAL_VAR_MODEL );
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SET_FLAGS2( MATERIAL_VAR2_NEEDS_TANGENT_SPACES );
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SET_FLAGS( MATERIAL_VAR_TRANSLUCENT );
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SET_FLAGS2( MATERIAL_VAR2_NEEDS_POWER_OF_TWO_FRAME_BUFFER_TEXTURE );
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// Set material parameter default values
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if ( ( info.m_nStage != -1 ) && ( !params[info.m_nStage]->IsDefined() ) )
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{
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params[info.m_nStage]->SetIntValue( 0 );
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}
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if ( ( info.m_nPortalOpenAmount != -1 ) && ( !params[info.m_nPortalOpenAmount]->IsDefined() ) )
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{
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params[info.m_nPortalOpenAmount]->SetFloatValue( kDefaultPortalOpenAmount );
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}
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if ( ( info.m_nPortalStatic != -1 ) && ( !params[info.m_nPortalStatic]->IsDefined() ) )
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{
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params[info.m_nPortalStatic]->SetFloatValue( kDefaultPortalStatic );
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}
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SET_PARAM_FLOAT_IF_NOT_DEFINED( info.m_nTime, 0.0f );
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}
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void InitPortalRefract( CBaseVSShader *pShader, IMaterialVar** params, PortalRefractVars_t &info )
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{
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int nStage = IS_PARAM_DEFINED( info.m_nStage ) ? params[info.m_nStage]->GetIntValue() : 0;
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// Load textures
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if ( nStage == 2 ) // Only load textures for third stage
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{
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if ( (info.m_nPortalMaskTexture != -1) && params[info.m_nPortalMaskTexture]->IsDefined() )
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{
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pShader->LoadTexture( info.m_nPortalMaskTexture );
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}
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if ( (info.m_nPortalColorTexture != -1) && params[info.m_nPortalColorTexture]->IsDefined() )
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{
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pShader->LoadTexture( info.m_nPortalColorTexture, TEXTUREFLAGS_SRGB );
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}
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}
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}
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void DrawPortalRefract( CBaseVSShader *pShader, IMaterialVar** params,
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IShaderDynamicAPI *pShaderAPI, IShaderShadow* pShaderShadow, PortalRefractVars_t &info )
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{
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int nStage = IS_PARAM_DEFINED( info.m_nStage ) ? params[info.m_nStage]->GetIntValue() : 0;
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SHADOW_STATE
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{
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// Set stream format
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pShaderShadow->VertexShaderVertexFormat( VERTEX_POSITION | VERTEX_NORMAL, 1, NULL, 4 );
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// Vertex Shader
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DECLARE_STATIC_VERTEX_SHADER( portal_refract_vs20 );
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SET_STATIC_VERTEX_SHADER_COMBO( STAGE, nStage );
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SET_STATIC_VERTEX_SHADER( portal_refract_vs20 );
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// On Leopard / 10.5.8, we can't do an sRGB read from a render target, so we must fake it in shader code
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bool bShaderSRGBRead = IsOSX() && !g_pHardwareConfig->CanDoSRGBReadFromRTs();
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// Pixel Shader
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if( g_pHardwareConfig->SupportsPixelShaders_2_b() || g_pHardwareConfig->ShouldAlwaysUseShaderModel2bShaders() ) // Always send OpenGL / Posix down this path
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{
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DECLARE_STATIC_PIXEL_SHADER( portal_refract_ps20b );
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SET_STATIC_PIXEL_SHADER_COMBO( STAGE, nStage );
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SET_STATIC_PIXEL_SHADER_COMBO( SHADER_SRGB_READ, bShaderSRGBRead ? 1 : 0 );
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SET_STATIC_PIXEL_SHADER( portal_refract_ps20b );
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}
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else
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{
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DECLARE_STATIC_PIXEL_SHADER( portal_refract_ps20 );
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SET_STATIC_PIXEL_SHADER_COMBO( STAGE, nStage );
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SET_STATIC_PIXEL_SHADER( portal_refract_ps20 );
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}
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// Textures
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pShaderShadow->EnableTexture( SHADER_SAMPLER0, true ); // Refraction texture
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pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, true );
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pShaderShadow->EnableTexture( SHADER_SAMPLER1, true ); // Noise
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pShaderShadow->EnableSRGBRead( SHADER_SAMPLER1, false ); // Not sRGB
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pShaderShadow->EnableTexture( SHADER_SAMPLER2, true ); // Color
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pShaderShadow->EnableSRGBRead( SHADER_SAMPLER2, true ); // sRGB
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pShaderShadow->EnableSRGBWrite( true ); //Stage 1 doesn't actually need srgb conversion, but it skips the software srgb solution anyway.
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// Enable alpha testing for all stages
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pShaderShadow->EnableAlphaTest( true );
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pShaderShadow->AlphaFunc( SHADER_ALPHAFUNC_GREATER, 0.5f );
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// Enable alpha blending for stage 2
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if ( nStage == 2 )
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{
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pShader->EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA );
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pShaderShadow->AlphaFunc( SHADER_ALPHAFUNC_GREATER, 1.0f/255.0f );
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}
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// Disable z-writes for all passes
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pShaderShadow->EnableDepthWrites( false );
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// Disable alpha-writes for all passes
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pShaderShadow->EnableAlphaWrites( false );
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}
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DYNAMIC_STATE
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{
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// Set Vertex Shader Combos
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DECLARE_DYNAMIC_VERTEX_SHADER( portal_refract_vs20 );
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SET_DYNAMIC_VERTEX_SHADER( portal_refract_vs20 );
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// Set Vertex Shader Constants
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if ( IS_PARAM_DEFINED( info.m_nTextureTransform ) )
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{
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pShader->SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_1, info.m_nTextureTransform );
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}
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// Time % 1000
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float vPackedVsConst1[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
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float flTime = IS_PARAM_DEFINED( info.m_nTime ) && params[info.m_nTime]->GetFloatValue() > 0.0f ? params[info.m_nTime]->GetFloatValue() : pShaderAPI->CurrentTime();
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vPackedVsConst1[0] = flTime;
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vPackedVsConst1[0] -= (float)( floor( vPackedVsConst1[0] / 1000.0f ) ) * 1000.0f;
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pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, vPackedVsConst1, 1 );
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// Set Pixel Shader Combos
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if( g_pHardwareConfig->SupportsPixelShaders_2_b() || g_pHardwareConfig->ShouldAlwaysUseShaderModel2bShaders() ) // Always send OpenGL / Posix down this path
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{
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DECLARE_DYNAMIC_PIXEL_SHADER( portal_refract_ps20b );
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SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
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SET_DYNAMIC_PIXEL_SHADER( portal_refract_ps20b );
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}
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else
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{
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DECLARE_DYNAMIC_PIXEL_SHADER( portal_refract_ps20 );
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SET_DYNAMIC_PIXEL_SHADER( portal_refract_ps20 );
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}
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// Bind textures
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if ( nStage == 0 ) // Only bind frame buffer texture for first stage
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{
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pShaderAPI->BindStandardTexture( SHADER_SAMPLER0, TEXTURE_FRAME_BUFFER_FULL_TEXTURE_0 ); // Refraction Map
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}
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if ( nStage == 2 ) // Only load textures for third stage
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{
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pShader->BindTexture( SHADER_SAMPLER1, info.m_nPortalMaskTexture );
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pShader->BindTexture( SHADER_SAMPLER2, info.m_nPortalColorTexture );
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}
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// Set Pixel Shader Constants
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pShaderAPI->SetPixelShaderFogParams( 6 );
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// Set c0-c3 to contain four rows of ViewProj matrix
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VMatrix mView, mProj;
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pShaderAPI->GetMatrix( MATERIAL_VIEW, mView.m[0] );
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pShaderAPI->GetMatrix( MATERIAL_PROJECTION, mProj.m[0] );
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VMatrix mViewProj = mView * mProj;
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mViewProj = mViewProj.Transpose();
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pShaderAPI->SetPixelShaderConstant( 0, mViewProj.m[0], 4 );
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// Portal open amount
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float vPackedConst4[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
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vPackedConst4[0] = ( IS_PARAM_DEFINED( info.m_nPortalOpenAmount ) ? params[info.m_nPortalOpenAmount]->GetFloatValue() : kDefaultPortalOpenAmount );
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vPackedConst4[1] = 1.0f - ( IS_PARAM_DEFINED( info.m_nPortalStatic ) ? params[info.m_nPortalStatic]->GetFloatValue() : kDefaultPortalStatic );
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vPackedConst4[2] = ( IS_PARAM_DEFINED( info.m_nPortalColorScale ) ? params[info.m_nPortalColorScale]->GetFloatValue() : kDefaultPortalColorScale );
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//vPackedConst4[0] = 0.6f;
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//DevMsg( "Refract Time: %f\n", vPackedConst4[0] );
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pShaderAPI->SetPixelShaderConstant( 4, vPackedConst4, 1 );
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pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_3, vPackedConst4, 1 );
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// Camera position
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float vEyePos[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
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pShaderAPI->GetWorldSpaceCameraPosition( vEyePos );
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pShaderAPI->SetPixelShaderConstant( 5, vEyePos, 1 );
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}
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pShader->Draw();
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}
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