source-engine/materialsystem/stdshaders/particlesphere_dx9.cpp

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2020-04-22 16:56:21 +00:00
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: A wet version of base * lightmap
//
// $Header: $
// $NoKeywords: $
//=============================================================================//
#include "BaseVSShader.h"
#include "particlesphere_vs20.inc"
#include "particlesphere_ps20.inc"
#include "particlesphere_ps20b.inc"
#include "cpp_shader_constant_register_map.h"
int GetDefaultDepthFeatheringValue( void ); //defined in spritecard.cpp
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
DEFINE_FALLBACK_SHADER( ParticleSphere, ParticleSphere_DX9 )
BEGIN_VS_SHADER_FLAGS( ParticleSphere_DX9, "Help for BumpmappedEnvMap", SHADER_NOT_EDITABLE )
BEGIN_SHADER_PARAMS
SHADER_PARAM( DEPTHBLEND, SHADER_PARAM_TYPE_INTEGER, "0", "fade at intersection boundaries" )
SHADER_PARAM( DEPTHBLENDSCALE, SHADER_PARAM_TYPE_FLOAT, "50.0", "Amplify or reduce DEPTHBLEND fading. Lower values make harder edges." )
SHADER_PARAM( USINGPIXELSHADER, SHADER_PARAM_TYPE_BOOL, "0", "Tells to client code whether the shader is using DX8 vertex/pixel shaders or not" )
SHADER_PARAM( BUMPMAP, SHADER_PARAM_TYPE_TEXTURE, "models/shadertest/shader1_normal", "bumpmap" )
SHADER_PARAM( LIGHTS, SHADER_PARAM_TYPE_FOURCC, "", "array of lights" )
SHADER_PARAM( LIGHT_POSITION, SHADER_PARAM_TYPE_VEC3, "0 0 0", "This is the directional light position." )
SHADER_PARAM( LIGHT_COLOR, SHADER_PARAM_TYPE_VEC3, "1 1 1", "This is the directional light color." )
END_SHADER_PARAMS
SHADER_INIT_PARAMS()
{
if ( !params[DEPTHBLEND]->IsDefined() )
{
params[ DEPTHBLEND ]->SetIntValue( GetDefaultDepthFeatheringValue() );
}
if ( !g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
params[ DEPTHBLEND ]->SetIntValue( 0 );
}
if ( !params[DEPTHBLENDSCALE]->IsDefined() )
{
params[ DEPTHBLENDSCALE ]->SetFloatValue( 50.0f );
}
}
bool UsePixelShaders( IMaterialVar **params ) const
{
return (!params || params[BUMPMAP]->IsDefined()) && g_pHardwareConfig->SupportsVertexAndPixelShaders();
}
SHADER_INIT
{
// If this would return false, then we should have fallen back to the DX6 one.
Assert( UsePixelShaders( params ) );
params[USINGPIXELSHADER]->SetIntValue( true );
LoadBumpMap( BUMPMAP );
}
SHADER_FALLBACK
{
if ( !UsePixelShaders(params) )
{
return "UnlitGeneric_DX6";
}
if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
{
return "ParticleSphere_DX8";
}
return 0;
}
SHADER_DRAW
{
SHADOW_STATE
{
pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
if ( params[DEPTHBLEND]->GetIntValue() )
{
pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
}
int tCoordDimensions[] = {2};
pShaderShadow->VertexShaderVertexFormat(
VERTEX_POSITION | VERTEX_COLOR, 1, tCoordDimensions, 0 );
pShaderShadow->EnableBlending( true );
pShaderShadow->BlendFunc( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA );
pShaderShadow->EnableDepthWrites( false );
DECLARE_STATIC_VERTEX_SHADER( particlesphere_vs20 );
SET_STATIC_VERTEX_SHADER( particlesphere_vs20 );
if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
DECLARE_STATIC_PIXEL_SHADER( particlesphere_ps20b );
SET_STATIC_PIXEL_SHADER_COMBO( DEPTHBLEND, params[DEPTHBLEND]->GetIntValue() );
SET_STATIC_PIXEL_SHADER( particlesphere_ps20b );
}
else
{
DECLARE_STATIC_PIXEL_SHADER( particlesphere_ps20 );
SET_STATIC_PIXEL_SHADER( particlesphere_ps20 );
}
FogToFogColor();
}
DYNAMIC_STATE
{
BindTexture( SHADER_SAMPLER0, BUMPMAP );
if ( params[DEPTHBLEND]->GetIntValue() )
{
pShaderAPI->BindStandardTexture( SHADER_SAMPLER1, TEXTURE_FRAME_BUFFER_FULL_DEPTH );
}
pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, params[LIGHT_POSITION]->GetVecValue() );
// Separate the light color into something that has a max value of 1 and a scale
// so the vertex shader can determine if it's going to overflow the color and scale back
// if it needs to.
//
// (It does this by seeing if the intensity*1/distSqr is > 1. If so, then it scales it so
// it is equal to 1).
const float *f = params[LIGHT_COLOR]->GetVecValue();
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Vector4D vLightColor( f[0], f[1], f[2], 0.f );
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float flScale = max( vLightColor.x, max( vLightColor.y, vLightColor.z ) );
if ( flScale < 0.01f )
flScale = 0.01f;
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Vector4D vScaleVec = { flScale, flScale, flScale, 0.f };
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vLightColor /= flScale;
pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_1, vLightColor.Base() );
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pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_2, vScaleVec.Base() );
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pShaderAPI->SetPixelShaderFogParams( PSREG_FOG_PARAMS );
float vEyePos_SpecExponent[4];
pShaderAPI->GetWorldSpaceCameraPosition( vEyePos_SpecExponent );
vEyePos_SpecExponent[3] = 0.0f;
pShaderAPI->SetPixelShaderConstant( PSREG_EYEPOS_SPEC_EXPONENT, vEyePos_SpecExponent, 1 );
pShaderAPI->SetDepthFeatheringPixelShaderConstant( 0, params[DEPTHBLENDSCALE]->GetFloatValue() );
// Compute the vertex shader index.
DECLARE_DYNAMIC_VERTEX_SHADER( particlesphere_vs20 );
SET_DYNAMIC_VERTEX_SHADER_COMBO( FOGTYPE, s_pShaderAPI->GetSceneFogMode() == MATERIAL_FOG_LINEAR_BELOW_FOG_Z );
SET_DYNAMIC_VERTEX_SHADER( particlesphere_vs20 );
if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
{
DECLARE_DYNAMIC_PIXEL_SHADER( particlesphere_ps20b );
SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
SET_DYNAMIC_PIXEL_SHADER( particlesphere_ps20b );
}
else
{
DECLARE_DYNAMIC_PIXEL_SHADER( particlesphere_ps20 );
SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
SET_DYNAMIC_PIXEL_SHADER( particlesphere_ps20 );
}
}
Draw();
}
END_SHADER