1HEADmaster

1 files changed, 112 insertions, 0 deletions

diff --git a/materialsystem/stdshaders/rift_dx6.cpp b/materialsystem/stdshaders/rift_dx6.cpp
new file mode 100644
index 0000000..59ceab2
--- /dev/null
+++ b/materialsystem/stdshaders/rift_dx6.cpp
@@ -0,0 +1,112 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Header: $
+// $NoKeywords: $
+//===========================================================================//
+
+#include "shaderlib/cshader.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+BEGIN_SHADER( Rift_DX6, 
+			  "Help for Rift_DX6" )
+			  
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( TEXTURE2, SHADER_PARAM_TYPE_TEXTURE, "shadertest/BaseTexture", "second texture" )
+		SHADER_PARAM( FRAME2, SHADER_PARAM_TYPE_INTEGER, "0", "frame number for $texture2" )
+		SHADER_PARAM( TEXTURE2TRANSFORM, SHADER_PARAM_TYPE_MATRIX, "center .5 .5 scale 1 1 rotate 0 translate 0 0", "$texture2 texcoord transform" )
+	END_SHADER_PARAMS
+
+	SHADER_INIT
+	{
+		if (params[BASETEXTURE]->IsDefined())
+		{
+			LoadTexture( BASETEXTURE );
+		}
+		if (params[TEXTURE2]->IsDefined())
+		{
+			LoadTexture( TEXTURE2 );
+		}
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
+			SetModulationShadowState();
+
+			// Either we've got a constant modulation
+			bool isTranslucent = IsAlphaModulating();
+
+			// Or we've got a texture alpha on either texture
+			isTranslucent = isTranslucent || TextureIsTranslucent( BASETEXTURE, true ) ||
+				TextureIsTranslucent( TEXTURE2, true );
+
+			if ( isTranslucent )
+			{
+				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
+			{
+				if ( IS_FLAG_SET(MATERIAL_VAR_ADDITIVE) )
+				{
+					EnableAlphaBlending( SHADER_BLEND_ONE, SHADER_BLEND_ONE );
+				}
+			}
+
+			pShaderShadow->EnableTexGen( SHADER_TEXTURE_STAGE0, true );
+			pShaderShadow->TexGen( SHADER_TEXTURE_STAGE0, SHADER_TEXGENPARAM_EYE_LINEAR );
+
+			pShaderShadow->DrawFlags( SHADER_DRAW_POSITION | SHADER_DRAW_TEXCOORD1 );
+			DefaultFog();
+		}
+		DYNAMIC_STATE
+		{
+			BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
+
+			// 1) Take a coordinate in camera space
+			// 2) Flip Y by multiplying by -1
+			// 3) Transform from [-w,w] to [0,2*w]
+			// 4) Transform from [0,2*w] to [0,w]
+			// We'll end up dividing by w in the pixel shader to get to [0,1]
+			VMatrix matProjection, matYFlip, matHalf, matOffset, matBaseTransform;
+			s_pShaderAPI->GetMatrix( MATERIAL_PROJECTION, matProjection.m[0] );
+
+			MatrixTranspose( matProjection, matProjection );
+
+			MatrixBuildScale( matYFlip, 1.0f, -1.0f, 1.0f );
+			MatrixBuildTranslation( matOffset, 1.0f, 1.0f, 0.0f );
+			MatrixBuildScale( matHalf, 0.5f, 0.5f, 1.0f );
+
+			MatrixMultiply( matYFlip, matProjection, matBaseTransform );
+			MatrixMultiply( matOffset, matBaseTransform, matBaseTransform );
+			MatrixMultiply( matHalf, matBaseTransform, matBaseTransform );
+
+			// tranpose before going into the shaderapi. . . suck
+			MatrixTranspose( matBaseTransform, matBaseTransform );
+			s_pShaderAPI->MatrixMode( MATERIAL_TEXTURE0 );
+			s_pShaderAPI->LoadMatrix( &matBaseTransform[0][0] );
+
+			// NOTE: This *must* be set after LoadMatrix since LoadMatrix slams the texture dimension
+			pShaderAPI->SetTextureTransformDimension( SHADER_TEXTURE_STAGE0, 3, true );
+
+			BindTexture( SHADER_SAMPLER1, TEXTURE2, FRAME2 );
+			SetFixedFunctionTextureTransform( MATERIAL_TEXTURE1, TEXTURE2TRANSFORM );
+
+			SetModulationDynamicState();
+		}
+		Draw();
+	}
+END_SHADER