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materialsystem/stdshaders/shatteredglass_dx7.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Lightmap only shader
+//
+// $Header: $
+// $NoKeywords: $
+//=============================================================================//
+
+#include "shaderlib/cshader.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+DEFINE_FALLBACK_SHADER( ShatteredGlass, ShatteredGlass_DX7 )
+
+BEGIN_SHADER( ShatteredGlass_DX7,
+			  "Help for ShatteredGlass_DX7" )
+
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( DETAIL, SHADER_PARAM_TYPE_TEXTURE, "shadertest/Detail", "detail" )
+		SHADER_PARAM( DETAILSCALE, SHADER_PARAM_TYPE_FLOAT, "1", "detail scale" )
+		SHADER_PARAM( ENVMAP, SHADER_PARAM_TYPE_TEXTURE, "shadertest/shadertest_env", "envmap" )
+		SHADER_PARAM( ENVMAPFRAME, SHADER_PARAM_TYPE_INTEGER, "", "" )
+		SHADER_PARAM( ENVMAPTINT, SHADER_PARAM_TYPE_COLOR, "[1 1 1]", "envmap tint" )
+		SHADER_PARAM( ENVMAPMASKSCALE, SHADER_PARAM_TYPE_FLOAT, "1", "envmap mask scale" )
+		SHADER_PARAM( LIGHTMAPTINT, SHADER_PARAM_TYPE_FLOAT, "1.0", "lightmap tint" )
+	END_SHADER_PARAMS
+
+	SHADER_INIT_PARAMS()
+	{
+		if( !params[ENVMAPMASKSCALE]->IsDefined() )
+		{
+			params[ENVMAPMASKSCALE]->SetFloatValue( 1.0f );
+		}
+
+		if( !params[DETAILSCALE]->IsDefined() )
+		{
+			params[DETAILSCALE]->SetFloatValue( 1.0f );
+		}
+
+		if( !params[LIGHTMAPTINT]->IsDefined() )
+		{
+			params[LIGHTMAPTINT]->SetFloatValue( 1.0f );
+		}
+
+		if( !params[ENVMAPTINT]->IsDefined() )
+		{
+			params[ENVMAPTINT]->SetVecValue( 1.0f, 1.0f, 1.0f );
+		}
+
+		// No texture means no self-illum or env mask in base alpha
+		if ( !params[BASETEXTURE]->IsDefined() )
+		{
+			CLEAR_FLAGS( MATERIAL_VAR_BASEALPHAENVMAPMASK );
+		}
+
+		// If in decal mode, no debug override...
+		if (IS_FLAG_SET(MATERIAL_VAR_DECAL))
+		{
+			SET_FLAGS( MATERIAL_VAR_NO_DEBUG_OVERRIDE );
+		}
+	}
+
+	SHADER_INIT
+	{
+		if (params[BASETEXTURE]->IsDefined())
+		{
+			LoadTexture( BASETEXTURE );
+
+			if (!params[BASETEXTURE]->GetTextureValue()->IsTranslucent())
+			{
+				if (IS_FLAG_SET(MATERIAL_VAR_BASEALPHAENVMAPMASK))
+					CLEAR_FLAGS( MATERIAL_VAR_BASEALPHAENVMAPMASK );
+			}
+		}
+
+		if (params[DETAIL]->IsDefined())
+		{					 
+			LoadTexture( DETAIL );
+		}
+
+		// Don't alpha test if the alpha channel is used for other purposes
+		if (IS_FLAG_SET(MATERIAL_VAR_BASEALPHAENVMAPMASK) )
+			CLEAR_FLAGS( MATERIAL_VAR_ALPHATEST );
+			
+		if (params[ENVMAP]->IsDefined())
+		{
+			if( !IS_FLAG_SET(MATERIAL_VAR_ENVMAPSPHERE) )
+				LoadCubeMap( ENVMAP );
+			else
+				LoadTexture( ENVMAP );
+
+			if( !g_pHardwareConfig->SupportsCubeMaps() )
+			{
+				SET_FLAGS( MATERIAL_VAR_ENVMAPSPHERE );
+			}
+		}
+	}
+
+	SHADER_FALLBACK
+	{
+		// The only thing we can't do here is masked env-mapped
+		if (g_pHardwareConfig->GetSamplerCount() < 2)
+		{
+			return "LightmappedTwoTexture_DX5";
+		}
+		return 0;
+	}
+
+
+	// Can't use the normal detail pass since we're modulating by the detail texture
+	// and because we're using the secondary texture coordinate
+	void DrawBaseTimesDetail( IMaterialVar** params, IShaderDynamicAPI *pShaderAPI, IShaderShadow* pShaderShadow )
+	{
+		// Base
+		SHADOW_STATE
+		{
+			// alpha test
+ 			pShaderShadow->EnableAlphaTest( IS_FLAG_SET(MATERIAL_VAR_ALPHATEST) );
+
+			// Alpha blending, enable alpha blending if the detail texture is translucent
+			bool detailIsTranslucent = TextureIsTranslucent( DETAIL, false );
+			if ( detailIsTranslucent )
+			{
+				if ( IS_FLAG_SET( MATERIAL_VAR_ADDITIVE ) )
+				{
+					EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE );
+				}
+				else
+				{
+					EnableAlphaBlending( SHADER_BLEND_SRC_ALPHA, SHADER_BLEND_ONE_MINUS_SRC_ALPHA );
+				}
+			}
+			else
+			{
+				SetDefaultBlendingShadowState( BASETEXTURE, true );
+			}
+
+			// independently configure alpha and color
+			pShaderShadow->EnableAlphaPipe( true );
+
+			// Here's the color	states (NOTE: SHADER_DRAW_COLOR == use Vertex Color)
+			pShaderShadow->EnableConstantColor( IsColorModulating() );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
+
+			// Here's the alpha states
+			pShaderShadow->EnableConstantAlpha( IsAlphaModulating() );
+			pShaderShadow->EnableVertexAlpha( IS_FLAG_SET(MATERIAL_VAR_VERTEXALPHA) );
+			pShaderShadow->EnableTextureAlpha( SHADER_TEXTURE_STAGE0, TextureIsTranslucent(BASETEXTURE, true) );
+			pShaderShadow->EnableTextureAlpha( SHADER_TEXTURE_STAGE1, detailIsTranslucent );
+
+			int flags = SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD0 | SHADER_DRAW_SECONDARY_TEXCOORD1;
+			if (IS_FLAG_SET(MATERIAL_VAR_VERTEXCOLOR))
+				flags |= SHADER_DRAW_COLOR;
+			pShaderShadow->DrawFlags( flags );
+			DefaultFog();
+		}
+		DYNAMIC_STATE
+		{
+			SetFixedFunctionTextureTransform( MATERIAL_TEXTURE0, BASETEXTURETRANSFORM );
+			SetFixedFunctionTextureScale( MATERIAL_TEXTURE1, DETAILSCALE );
+			BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
+			BindTexture( SHADER_SAMPLER1, DETAIL );
+			SetModulationDynamicState();
+		}
+		Draw();
+
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableAlphaPipe( false );
+		}
+	}
+
+
+	SHADER_DRAW
+	{
+		// Pass 1 : Base + env
+		DrawBaseTimesDetail( params, pShaderAPI, pShaderShadow );
+
+		// Pass 2 : * lightmap
+		FixedFunctionMultiplyByLightmapPass( BASETEXTURE, FRAME, BASETEXTURETRANSFORM, params[LIGHTMAPTINT]->GetFloatValue() );
+
+		// Pass 3 : + env
+		bool envDefined = params[ENVMAP]->IsTexture();
+		if (envDefined)
+		{
+			FixedFunctionAdditiveMaskedEnvmapPass(
+				ENVMAP, BASETEXTURE, BASETEXTURE,
+				ENVMAPFRAME, FRAME, FRAME, 
+				BASETEXTURETRANSFORM, ENVMAPMASKSCALE, ENVMAPTINT );
+		}
+	}
+END_SHADER