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2020-04-22 12:56:21 -04:00
commit 3bf9df6b27
15370 changed files with 5489726 additions and 0 deletions
--- a/materialsystem/stdshaders/shadow.cpp
+++ b/materialsystem/stdshaders/shadow.cpp
@ -0,0 +1,138 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Header: $
+// $NoKeywords: $
+//=============================================================================//
+
+#include "BaseVSShader.h"
+
+#include "shadow_ps20.inc"
+#include "shadow_ps20b.inc"
+#include "shadow_vs20.inc"
+
+BEGIN_VS_SHADER_FLAGS( Shadow, "Help for Shadow", SHADER_NOT_EDITABLE )
+
+	BEGIN_SHADER_PARAMS
+	END_SHADER_PARAMS
+
+	SHADER_INIT_PARAMS()
+	{
+		/*
+		The alpha blending state either must be:
+
+		Src Color * Dst Color + Dst Color * 0	
+		(src color = C*A + 1-A)
+
+		or
+
+		// Can't be this, doesn't work with fog
+		Src Color * Dst Color + Dst Color * (1-Src Alpha)	
+		(src color = C * A, Src Alpha = A)
+		*/
+	}
+
+	SHADER_FALLBACK
+	{
+		if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
+		{
+			return "Shadow_DX8";
+		}
+		return 0;
+	}
+
+	SHADER_INIT
+	{
+		LoadTexture( BASETEXTURE, TEXTUREFLAGS_SRGB );
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, true );
+
+
+			// NOTE: This is deliberately this way round (instead of "DST_COLOR, ZERO"),
+			//       since these two permutations produce *different* values on 360!!
+			//       This was causing undue darkening of the framebuffer by these
+			//       shadows, which was highly noticeable in very dark areas:
+			EnableAlphaBlending( SHADER_BLEND_ZERO, SHADER_BLEND_SRC_COLOR );
+
+
+			unsigned int flags = VERTEX_POSITION | VERTEX_COLOR;
+			int numTexCoords = 1;
+			pShaderShadow->VertexShaderVertexFormat( flags, numTexCoords, 0, 0 );
+
+			DECLARE_STATIC_VERTEX_SHADER( shadow_vs20 );
+			SET_STATIC_VERTEX_SHADER( shadow_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_STATIC_PIXEL_SHADER( shadow_ps20b );
+				SET_STATIC_PIXEL_SHADER( shadow_ps20b );
+			}
+			else
+			{
+				DECLARE_STATIC_PIXEL_SHADER( shadow_ps20 );
+				SET_STATIC_PIXEL_SHADER( shadow_ps20 );
+			}
+
+			pShaderShadow->EnableSRGBWrite( true );
+
+			// We need to fog to *white* regardless of overbrighting...
+			FogToWhite();
+		}
+		DYNAMIC_STATE
+		{
+			BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
+
+			SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, BASETEXTURETRANSFORM );
+			SetPixelShaderConstantGammaToLinear( 1, COLOR );
+
+			// Get texture dimensions...
+			int nWidth = 16;
+			int nHeight = 16;
+			ITexture *pTexture = params[BASETEXTURE]->GetTextureValue();
+			if (pTexture)
+			{
+				nWidth = pTexture->GetActualWidth();
+				nHeight = pTexture->GetActualHeight();
+			}
+
+			Vector4D vecJitter( 1.0 / nWidth, 1.0 / nHeight, 0.0, 0.0 );
+			pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_2, vecJitter.Base() );
+
+			vecJitter.y *= -1.0f;
+			pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_3, vecJitter.Base() );
+
+			MaterialFogMode_t fogType = pShaderAPI->GetSceneFogMode();
+			int fogIndex = ( fogType == MATERIAL_FOG_LINEAR_BELOW_FOG_Z ) ? 1 : 0;
+
+			DECLARE_DYNAMIC_VERTEX_SHADER( shadow_vs20 );
+			SET_DYNAMIC_VERTEX_SHADER_COMBO( DOWATERFOG,  fogIndex );
+			SET_DYNAMIC_VERTEX_SHADER( shadow_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( shadow_ps20b );
+				SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
+				SET_DYNAMIC_PIXEL_SHADER( shadow_ps20b );
+			}
+			else
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( shadow_ps20 );
+				SET_DYNAMIC_PIXEL_SHADER_COMBO( PIXELFOGTYPE, pShaderAPI->GetPixelFogCombo() );
+				SET_DYNAMIC_PIXEL_SHADER( shadow_ps20 );
+			}
+
+			float eyePos[4];
+			pShaderAPI->GetWorldSpaceCameraPosition( eyePos );
+			pShaderAPI->SetPixelShaderConstant( 2, eyePos, 1 );
+			pShaderAPI->SetPixelShaderFogParams( 3 );
+		}
+		Draw( );
+	}
+END_SHADER