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62 lines
1.4 KiB
62 lines
1.4 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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// $Header: $ |
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// $NoKeywords: $ |
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//=============================================================================// |
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#include "shaderlib/cshader.h" |
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// memdbgon must be the last include file in a .cpp file!!! |
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#include "tier0/memdbgon.h" |
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DEFINE_FALLBACK_SHADER( FilmGrain, FilmGrain_DX7 ) |
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BEGIN_SHADER( FilmGrain_DX7, "Help for FilmGrain_DX7" ) |
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BEGIN_SHADER_PARAMS |
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SHADER_PARAM( GRAIN_TEXTURE, SHADER_PARAM_TYPE_TEXTURE, "0", "Film grain texture" ) |
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SHADER_PARAM( NOISESCALE, SHADER_PARAM_TYPE_VEC4, "", "Strength of film grain" ) |
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END_SHADER_PARAMS |
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SHADER_INIT_PARAMS() |
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{ |
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} |
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SHADER_FALLBACK |
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{ |
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// Requires DX9 + above |
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if ( g_pHardwareConfig->GetDXSupportLevel() < 70 ) |
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{ |
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Assert( 0 ); |
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return "Wireframe"; |
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} |
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return 0; |
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} |
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SHADER_INIT |
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{ |
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LoadTexture( GRAIN_TEXTURE ); |
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} |
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SHADER_DRAW |
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{ |
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SHADOW_STATE |
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{ |
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pShaderShadow->EnableConstantColor( true ); |
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pShaderShadow->EnableBlending( true ); |
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pShaderShadow->BlendFunc( SHADER_BLEND_ONE_MINUS_DST_COLOR, SHADER_BLEND_ONE_MINUS_SRC_COLOR ); |
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pShaderShadow->EnableTexture( SHADER_SAMPLER0, true ); |
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pShaderShadow->DrawFlags( SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD0 ); |
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} |
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DYNAMIC_STATE |
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{ |
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float color[4]; |
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params[NOISESCALE]->GetVecValue( color, 4 ); |
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s_pShaderAPI->Color4fv( color ); |
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BindTexture( SHADER_SAMPLER0, GRAIN_TEXTURE, -1 ); |
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} |
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Draw(); |
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} |
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END_SHADER
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