From 7309a5f13f63fdcc7b1e090f6c176113a9d95061 Mon Sep 17 00:00:00 2001
From: Joe Ludwig <joe@valvesoftware.com>
Date: Mon, 23 Dec 2013 14:58:45 -0800
Subject: Added many shader source files

This should include the latest version of every shader that was in the
2007 SDK. It also includes a smattering of debug shaders, both VR
distortion shaders, and other assorted shaders that will hopefully be
useful.

None of these new files are included in the game shader DLL project. If
you need to modify one of these shaders for use in your mod you will
need to rename it so that you don't collide with the version of that
shader that lives in stdshader_dx9.dll.
---
 mp/src/materialsystem/stdshaders/ShadowModel.vsh | 85 ++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 mp/src/materialsystem/stdshaders/ShadowModel.vsh

(limited to 'mp/src/materialsystem/stdshaders/ShadowModel.vsh')

diff --git a/mp/src/materialsystem/stdshaders/ShadowModel.vsh b/mp/src/materialsystem/stdshaders/ShadowModel.vsh
new file mode 100644
index 00000000..3e4b9eba
--- /dev/null
+++ b/mp/src/materialsystem/stdshaders/ShadowModel.vsh
@@ -0,0 +1,85 @@
+vs.1.1
+
+# DYNAMIC: "DOWATERFOG"				"0..1"
+# DYNAMIC: "SKINNING"				"0..1"
+
+;------------------------------------------------------------------------------
+; Constants specified by the app
+;	 $SHADER_SPECIFIC_CONST_0-$SHADER_SPECIFIC_CONST_2 = Shadow texture matrix
+;	 $SHADER_SPECIFIC_CONST_3	 = Tex origin
+;	 $SHADER_SPECIFIC_CONST_4	 = Tex Scale
+;	 $SHADER_SPECIFIC_CONST_5	 = [Shadow falloff offset, 1/Shadow distance, Shadow scale, 0 ]
+;------------------------------------------------------------------------------
+
+#include "macros.vsh"
+
+;------------------------------------------------------------------------------
+; Vertex blending (whacks r1-r7, positions in r7, normals in r8)
+;------------------------------------------------------------------------------
+&AllocateRegister( \$worldPos );
+&AllocateRegister( \$worldNormal );
+&SkinPositionAndNormal( $worldPos, $worldNormal );
+
+; Transform the position from world to view space
+&AllocateRegister( \$projPos );
+
+dp4 $projPos.x, $worldPos, $cViewProj0
+dp4 $projPos.y, $worldPos, $cViewProj1
+dp4 $projPos.z, $worldPos, $cViewProj2
+dp4 $projPos.w, $worldPos, $cViewProj3
+mov oPos, $projPos
+
+;------------------------------------------------------------------------------
+; Fog
+;------------------------------------------------------------------------------
+&CalcFog( $worldPos, $projPos );
+&FreeRegister( \$projPos );
+
+;------------------------------------------------------------------------------
+; Transform position into texture space (from 0 to 1)
+;------------------------------------------------------------------------------
+&AllocateRegister( \$texturePos );
+dp4 $texturePos.x, $worldPos, $SHADER_SPECIFIC_CONST_0
+dp4 $texturePos.y, $worldPos, $SHADER_SPECIFIC_CONST_1
+dp4 $texturePos.z, $worldPos, $SHADER_SPECIFIC_CONST_2
+&FreeRegister( \$worldPos );
+
+;------------------------------------------------------------------------------
+; Figure out the shadow fade amount
+;------------------------------------------------------------------------------
+&AllocateRegister( \$shadowFade );
+sub $shadowFade, $texturePos.z, $SHADER_SPECIFIC_CONST_5.x
+mul $shadowFade, $shadowFade, $SHADER_SPECIFIC_CONST_5.y
+  
+;------------------------------------------------------------------------------
+; Offset it into the texture
+;------------------------------------------------------------------------------
+&AllocateRegister( \$actualTextureCoord );
+mul $actualTextureCoord.xyz, $SHADER_SPECIFIC_CONST_4, $texturePos
+add oT0.xyz, $actualTextureCoord, $SHADER_SPECIFIC_CONST_3
+;mov oT0.xyz, $texturePos
+&FreeRegister( \$actualTextureCoord );
+
+;------------------------------------------------------------------------------
+; We're doing clipping by using texkill
+;------------------------------------------------------------------------------
+mov oT1.xyz, $texturePos		; also clips when shadow z < 0 !
+sub oT2.xyz, $cOne, $texturePos
+sub oT2.z, $cOne, $shadowFade.z	; clips when shadow z > shadow distance	
+&FreeRegister( \$texturePos );
+
+;------------------------------------------------------------------------------
+; We're doing backface culling by using texkill also (wow yucky)
+;------------------------------------------------------------------------------
+; Transform z component of normal in texture space
+; If it's negative, then don't draw the pixel
+dp3 oT3, $worldNormal, -$SHADER_SPECIFIC_CONST_2
+&FreeRegister( \$worldNormal );
+
+;------------------------------------------------------------------------------
+; Shadow color, falloff
+;------------------------------------------------------------------------------
+mov oD0, $cModulationColor
+mul oD0.w, $shadowFade.x, $SHADER_SPECIFIC_CONST_5.z
+&FreeRegister( \$shadowFade );
+
-- 
cgit v1.2.3