//-----------------------------------------------------------------------------
// GR - translucency query
//-----------------------------------------------------------------------------
BlendType_t CBaseVSShader::EvaluateBlendRequirements( int textureVar, bool isBaseTexture,
int detailTextureVar )
{
// Either we've got a constant modulation
bool isTranslucent = IsAlphaModulating();
// Or we've got a vertex alpha
isTranslucent = isTranslucent || (CurrentMaterialVarFlags() & MATERIAL_VAR_VERTEXALPHA);
// Or we've got a texture alpha (for blending or alpha test)
isTranslucent = isTranslucent || ( TextureIsTranslucent( textureVar, isBaseTexture ) &&
!(CurrentMaterialVarFlags() & MATERIAL_VAR_ALPHATEST ) );
if ( ( detailTextureVar != -1 ) && ( ! isTranslucent ) )
{
isTranslucent = TextureIsTranslucent( detailTextureVar, isBaseTexture );
}
if ( CurrentMaterialVarFlags() & MATERIAL_VAR_ADDITIVE )
{
return isTranslucent ? BT_BLENDADD : BT_ADD; // Additive
}
else
{
return isTranslucent ? BT_BLEND : BT_NONE; // Normal blending
}
}
BlendType_t CBaseOES2Shader::EvaluateBlendRequirements(int textureVar, bool isBaseTexture, int detailTextureVar)
{
IMaterialVar **params = s_ppParams;
bool isTranslucent = IsAlphaModulating() ||
(CurrentMaterialVarFlags() & MATERIAL_VAR_VERTEXALPHA) ||
(!(CurrentMaterialVarFlags() & MATERIAL_VAR_ALPHATEST) && TextureIsTranslucent(textureVar, isBaseTexture)) ||
((detailTextureVar != -1) && TextureIsTranslucent(detailTextureVar, isBaseTexture));
if (CurrentMaterialVarFlags() & MATERIAL_VAR_ADDITIVE)
return isTranslucent ? BT_BLENDADD : BT_ADD;
return isTranslucent ? BT_BLEND : BT_NONE;
}
//ConVar mat_debug_flashlight_only( "mat_debug_flashlight_only", "0" );
void CBaseShader::SetAdditiveBlendingShadowState( int textureVar, bool isBaseTexture )
{
Assert( IsSnapshotting() );
// Either we've got a constant modulation
bool isTranslucent = IsAlphaModulating();
// Or we've got a vertex alpha
isTranslucent = isTranslucent || (CurrentMaterialVarFlags() & MATERIAL_VAR_VERTEXALPHA);
// Or we've got a texture alpha
isTranslucent = isTranslucent || ( TextureIsTranslucent( textureVar, isBaseTexture ) &&
!(CurrentMaterialVarFlags() & MATERIAL_VAR_ALPHATEST ) );
/*
if ( mat_debug_flashlight_only.GetBool() )
{
if (isTranslucent)
{
EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA);
//s_pShaderShadow->EnableAlphaTest( true );
//s_pShaderShadow->AlphaFunc( SHADER_ALPHAFUNC_GREATER, 0.99f );
}
else
{
EnableAlphaBlending( SHADER_BLEND_ONE, SHADER_BLEND_ZERO);
}
}
else
*/
{
if (isTranslucent)
{
EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE );
}
else
{
EnableAlphaBlending( SHADER_BLEND_ONE, SHADER_BLEND_ONE );
}
}
}
void CBaseShader::SetNormalBlendingShadowState( int textureVar, bool isBaseTexture )
{
Assert( IsSnapshotting() );
// Either we've got a constant modulation
bool isTranslucent = IsAlphaModulating();
// Or we've got a vertex alpha
isTranslucent = isTranslucent || (CurrentMaterialVarFlags() & MATERIAL_VAR_VERTEXALPHA);
// Or we've got a texture alpha
isTranslucent = isTranslucent || ( TextureIsTranslucent( textureVar, isBaseTexture ) &&
!(CurrentMaterialVarFlags() & MATERIAL_VAR_ALPHATEST ) );
if (isTranslucent)
{
EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA );
}
else
{
DisableAlphaBlending();
}
}
//-----------------------------------------------------------------------------
// Multiply by lightmap pass
//-----------------------------------------------------------------------------
void CBaseShader::FixedFunctionMultiplyByLightmapPass( int baseTextureVar,
int frameVar, int baseTextureTransformVar, float alphaOverride )
{
if (IsSnapshotting())
{
s_pShaderShadow->EnableAlphaTest( false );
s_pShaderShadow->EnableBlending( true );
SingleTextureLightmapBlendMode();
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE0, true );
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE1, true );
s_pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE0, false );
s_pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE1, false );
s_pShaderShadow->EnableCustomPixelPipe( true );
s_pShaderShadow->CustomTextureStages( 2 );
// Stage zero color is not used, this op doesn't matter
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0,
SHADER_TEXCHANNEL_COLOR, SHADER_TEXOP_SELECTARG1,
SHADER_TEXARG_CONSTANTCOLOR, SHADER_TEXARG_CONSTANTCOLOR );
// This here will perform color = lightmap * (cc alpha) + 1 * (1- cc alpha)
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE1,
SHADER_TEXCHANNEL_COLOR, SHADER_TEXOP_BLEND_PREVIOUSSTAGEALPHA,
SHADER_TEXARG_TEXTURE, SHADER_TEXARG_CONSTANTCOLOR );
int flags = SHADER_DRAW_POSITION | SHADER_DRAW_LIGHTMAP_TEXCOORD1;
// Multiply the constant alpha by the texture alpha for total alpha
if (TextureIsTranslucent(baseTextureVar, true))
{
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0,
SHADER_TEXCHANNEL_ALPHA, SHADER_TEXOP_MODULATE,
SHADER_TEXARG_TEXTURE, SHADER_TEXARG_CONSTANTCOLOR );
flags |= SHADER_DRAW_TEXCOORD0;
}
else
{
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE0, false );
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0,
SHADER_TEXCHANNEL_ALPHA, SHADER_TEXOP_SELECTARG2,
SHADER_TEXARG_TEXTURE, SHADER_TEXARG_CONSTANTCOLOR );
}
// Alpha isn't used, it doesn't matter what we set it to.
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE1,
SHADER_TEXCHANNEL_ALPHA, SHADER_TEXOP_SELECTARG1,
SHADER_TEXARG_PREVIOUSSTAGE, SHADER_TEXARG_NONE );
s_pShaderShadow->DrawFlags( flags );
Draw();
s_pShaderShadow->EnableCustomPixelPipe( false );
}
else
{
// Put the alpha in the color channel to modulate the color down....
float alpha = (alphaOverride < 0) ? GetAlpha() : alphaOverride;
if (g_pConfig->overbright == 2.0f)
s_pShaderAPI->Color4f( 0.5f, 0.5f, 0.5f, alpha );
else
s_pShaderAPI->Color4f( 1.0f, 1.0f, 1.0f, alpha );
if (TextureIsTranslucent(baseTextureVar, true))
{
SetFixedFunctionTextureTransform( MATERIAL_TEXTURE0, baseTextureTransformVar );
BindTexture( SHADER_TEXTURE_STAGE0, baseTextureVar, frameVar );
}
LoadIdentity( MATERIAL_TEXTURE1 );
s_pShaderAPI->BindLightmap( SHADER_TEXTURE_STAGE1 );
FogToWhite();
Draw();
}
}
//-----------------------------------------------------------------------------
// Fixed function multiply by detail texture pass
//-----------------------------------------------------------------------------
void CBaseShader::FixedFunctionMultiplyByDetailPass( int baseTextureVar, int frameVar,
int textureTransformVar, int detailVar, int detailScaleVar )
{
IMaterialVar** params = s_ppParams;
if (!params[detailVar]->IsDefined())
return;
if (IsSnapshotting())
{
s_pShaderShadow->EnableAlphaTest( IS_FLAG_SET(MATERIAL_VAR_ALPHATEST) );
bool translucentTexture = TextureIsTranslucent( baseTextureVar, true ) ||
IS_FLAG_SET(MATERIAL_VAR_ALPHATEST);
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE0, translucentTexture );
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE1, true );
s_pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE0, false );
s_pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE1, false );
// Mod 2x blend here
EnableAlphaBlending( SHADER_BLEND_DST_COLOR, SHADER_BLEND_SRC_COLOR );
s_pShaderShadow->EnableCustomPixelPipe( true );
s_pShaderShadow->CustomTextureStages( 2 );
// We need to blend towards grey based on alpha...
// We can never get the perfect alpha (vertex alpha * cc alpha * texture alpha)
// so we'll just choose to use cc alpha * texture alpha
int flags = SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD1;
// Compute alpha, stage 0 is used, stage 1 isn't.
if ( translucentTexture )
{
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0,
SHADER_TEXCHANNEL_ALPHA, SHADER_TEXOP_MODULATE,
SHADER_TEXARG_TEXTURE, SHADER_TEXARG_CONSTANTCOLOR );
flags |= SHADER_DRAW_TEXCOORD0;
}
else
{
bool hasVertexAlpha = (CurrentMaterialVarFlags() & MATERIAL_VAR_VERTEXALPHA) != 0;
if (hasVertexAlpha)
{
flags |= SHADER_DRAW_COLOR;
}
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0,
SHADER_TEXCHANNEL_ALPHA, hasVertexAlpha ? SHADER_TEXOP_MODULATE : SHADER_TEXOP_SELECTARG2,
SHADER_TEXARG_VERTEXCOLOR, SHADER_TEXARG_CONSTANTCOLOR );
}
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE1,
SHADER_TEXCHANNEL_ALPHA, SHADER_TEXOP_SELECTARG1,
SHADER_TEXARG_PREVIOUSSTAGE, SHADER_TEXARG_NONE );
// This here will perform color = vertex light * alpha + 0.5f * (1 - alpha)
// Stage 0 really doesn't do anything
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE0,
SHADER_TEXCHANNEL_COLOR, SHADER_TEXOP_SELECTARG1,
SHADER_TEXARG_TEXTURE, SHADER_TEXARG_CONSTANTCOLOR );
s_pShaderShadow->CustomTextureOperation( SHADER_TEXTURE_STAGE1,
SHADER_TEXCHANNEL_COLOR, SHADER_TEXOP_BLEND_PREVIOUSSTAGEALPHA,
SHADER_TEXARG_TEXTURE, SHADER_TEXARG_CONSTANTCOLOR );
s_pShaderShadow->DrawFlags( flags );
Draw( );
s_pShaderShadow->EnableCustomPixelPipe( false );
DisableAlphaBlending();
}
else
{
if (TextureIsTranslucent( baseTextureVar, true ) )
{
SetFixedFunctionTextureTransform( MATERIAL_TEXTURE0, textureTransformVar );
BindTexture( SHADER_TEXTURE_STAGE0, baseTextureVar, frameVar );
}
BindTexture( SHADER_TEXTURE_STAGE1, detailVar, frameVar );
SetFixedFunctionTextureScaledTransform( MATERIAL_TEXTURE1, textureTransformVar, detailScaleVar );
float alpha = GetAlpha();
s_pShaderAPI->Color4ub( 128, 128, 128, 255 * alpha );
FogToGrey();
Draw( );
}
}
//-----------------------------------------------------------------------------
// Fixed function Base * detail pass
//-----------------------------------------------------------------------------
void CBaseShader::FixedFunctionBaseTimesDetailPass( int baseTextureVar,
int frameVar, int baseTextureTransformVar, int detailVar, int detailScaleVar )
{
IMaterialVar** params = s_ppParams;
// We can't do this one one pass if CC and VC are both active...
bool hasDetail = (detailVar != -1) && params[detailVar]->IsDefined();
bool detailInSecondPass = hasDetail && IsColorModulating() &&
(IS_FLAG_SET(MATERIAL_VAR_VERTEXCOLOR) || IS_FLAG_SET(MATERIAL_VAR_VERTEXALPHA));
if (IsSnapshotting())
{
IMaterialVar** params = s_ppParams;
s_pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE0, false );
s_pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE1, false );
// alpha test
s_pShaderShadow->EnableAlphaTest( IS_FLAG_SET(MATERIAL_VAR_ALPHATEST) );
// Alpha blending
SetDefaultBlendingShadowState( baseTextureVar, true );
// independently configure alpha and color
s_pShaderShadow->EnableAlphaPipe( true );
// Here's the color states (NOTE: SHADER_DRAW_COLOR == use Vertex Color)
s_pShaderShadow->EnableConstantColor( IsColorModulating() );
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE0, true );
int flags = SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD0;
// Detail texture..
if (hasDetail && (!detailInSecondPass))
{
s_pShaderShadow->EnableTexture( SHADER_TEXTURE_STAGE1, true );
// Force mod2x
s_pShaderShadow->OverbrightValue( SHADER_TEXTURE_STAGE1, 2.0f );
flags |= SHADER_DRAW_TEXCOORD1;
}
// Here's the alpha states
s_pShaderShadow->EnableConstantAlpha( IsAlphaModulating() );
s_pShaderShadow->EnableVertexAlpha( IS_FLAG_SET(MATERIAL_VAR_VERTEXALPHA) );
s_pShaderShadow->EnableTextureAlpha( SHADER_TEXTURE_STAGE0, TextureIsTranslucent(baseTextureVar, true) );
if (IS_FLAG_SET(MATERIAL_VAR_VERTEXCOLOR))
flags |= SHADER_DRAW_COLOR;
s_pShaderShadow->DrawFlags( flags );
Draw();
s_pShaderShadow->EnableAlphaPipe( false );
}
else
{
SetFixedFunctionTextureTransform( MATERIAL_TEXTURE0, baseTextureTransformVar );
BindTexture( SHADER_TEXTURE_STAGE0, baseTextureVar, frameVar );
// Detail texture..
if (hasDetail && (!detailInSecondPass))
{
BindTexture( SHADER_TEXTURE_STAGE1, detailVar, frameVar );
SetFixedFunctionTextureScaledTransform( MATERIAL_TEXTURE1, baseTextureTransformVar, detailScaleVar );
}
SetModulationDynamicState();
DefaultFog();
Draw();
}
if (detailInSecondPass)
{
FixedFunctionMultiplyByDetailPass( baseTextureVar, frameVar, baseTextureTransformVar, detailVar, detailScaleVar );
}
}
