mirror of
https://github.com/nillerusr/source-engine.git
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94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "BaseVSShader.h"
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#include "screenspaceeffect_vs20.inc"
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#include "floattoscreen_ps20.inc"
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#include "floattoscreen_ps20b.inc"
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#include "convar.h"
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BEGIN_VS_SHADER_FLAGS( floattoscreen, "Help for floattoscreen", SHADER_NOT_EDITABLE )
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BEGIN_SHADER_PARAMS
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SHADER_PARAM( FBTEXTURE, SHADER_PARAM_TYPE_TEXTURE, "", "" )
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SHADER_PARAM( PIXSHADER, SHADER_PARAM_TYPE_STRING, "floattoscreen_ps20", "Name of the pixel shader to use" )
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END_SHADER_PARAMS
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SHADER_INIT
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{
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if( params[FBTEXTURE]->IsDefined() )
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{
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LoadTexture( FBTEXTURE );
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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() < 90 )
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return "Wireframe";
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return 0;
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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->EnableDepthWrites( false );
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pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
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int fmt = VERTEX_POSITION;
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pShaderShadow->VertexShaderVertexFormat( fmt, 1, 0, 0 );
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// convert from linear to gamma on write.
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pShaderShadow->EnableSRGBWrite( true );
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// Pre-cache shaders
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DECLARE_STATIC_VERTEX_SHADER( screenspaceeffect_vs20 );
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SET_STATIC_VERTEX_SHADER( screenspaceeffect_vs20 );
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// DECLARE_STATIC_PIXEL_SHADER( floattoscreen_ps20 );
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// SET_STATIC_PIXEL_SHADER( floattoscreen_ps20 );
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if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
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{
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const char *szPixelShader = params[PIXSHADER]->GetStringValue();
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size_t iLength = Q_strlen( szPixelShader );
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if( (iLength > 5) && (Q_stricmp( &szPixelShader[iLength - 5], "_ps20" ) == 0) ) //detect if it's trying to load a ps20 shader
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{
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//replace it with the ps20b shader
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char *szNewName = (char *)stackalloc( sizeof( char ) * (iLength + 2) );
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memcpy( szNewName, szPixelShader, sizeof( char ) * iLength );
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szNewName[iLength] = 'b';
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szNewName[iLength + 1] = '\0';
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pShaderShadow->SetPixelShader( szNewName, 0 );
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}
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else
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{
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pShaderShadow->SetPixelShader( params[PIXSHADER]->GetStringValue(), 0 );
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}
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}
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else
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{
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pShaderShadow->SetPixelShader( params[PIXSHADER]->GetStringValue(), 0 );
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}
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}
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DYNAMIC_STATE
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{
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BindTexture( SHADER_SAMPLER0, FBTEXTURE, -1 );
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DECLARE_DYNAMIC_VERTEX_SHADER( screenspaceeffect_vs20 );
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SET_DYNAMIC_VERTEX_SHADER( screenspaceeffect_vs20 );
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// DECLARE_DYNAMIC_PIXEL_SHADER( floattoscreen_ps20 );
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// SET_DYNAMIC_PIXEL_SHADER( floattoscreen_ps20 );
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pShaderAPI->SetPixelShaderIndex( 0 );
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}
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Draw();
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}
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END_SHADER
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