mirror of
https://github.com/alliedmodders/hl2sdk.git
synced 2024-12-23 01:59:43 +08:00
101 lines
3.1 KiB
GLSL
101 lines
3.1 KiB
GLSL
vs.1.1
|
|
|
|
# DYNAMIC: "DOWATERFOG" "0..1"
|
|
|
|
#include "macros.vsh"
|
|
|
|
;------------------------------------------------------------------------------
|
|
; Vertex blending
|
|
;------------------------------------------------------------------------------
|
|
|
|
&AllocateRegister( \$worldPos );
|
|
|
|
; Transform position from object to world
|
|
dp4 $worldPos.x, $vPos, $cModel0
|
|
dp4 $worldPos.y, $vPos, $cModel1
|
|
dp4 $worldPos.z, $vPos, $cModel2
|
|
|
|
&AllocateRegister( \$projPos );
|
|
|
|
; Transform position from object to projection space
|
|
dp4 $projPos.x, $vPos, $cModelViewProj0
|
|
dp4 $projPos.y, $vPos, $cModelViewProj1
|
|
dp4 $projPos.z, $vPos, $cModelViewProj2
|
|
dp4 $projPos.w, $vPos, $cModelViewProj3
|
|
|
|
mov oPos, $projPos
|
|
|
|
;------------------------------------------------------------------------------
|
|
; Fog
|
|
;------------------------------------------------------------------------------
|
|
&CalcFog( $worldPos, $projPos );
|
|
|
|
&FreeRegister( \$projPos );
|
|
|
|
;------------------------------------------------------------------------------
|
|
; Lighting
|
|
;------------------------------------------------------------------------------
|
|
|
|
; Transform tangent space basis vectors to env map space (world space)
|
|
; This will produce a set of vectors mapping from tangent space to env space
|
|
; We'll use this to transform normals from the normal map from tangent space
|
|
; to environment map space.
|
|
; NOTE: use dp3 here since the basis vectors are vectors, not points
|
|
|
|
dp3 oT1.x, $vTangentS, $cModel0
|
|
dp3 oT2.x, $vTangentS, $cModel1
|
|
dp3 oT3.x, $vTangentS, $cModel2
|
|
|
|
dp3 oT1.y, $vTangentT, $cModel0
|
|
dp3 oT2.y, $vTangentT, $cModel1
|
|
dp3 oT3.y, $vTangentT, $cModel2
|
|
|
|
dp3 oT1.z, $vNormal, $cModel0
|
|
dp3 oT2.z, $vNormal, $cModel1
|
|
dp3 oT3.z, $vNormal, $cModel2
|
|
|
|
; Compute the vector from vertex to camera
|
|
&AllocateRegister( \$worldEyeVect );
|
|
sub $worldEyeVect.xyz, $cEyePos, $worldPos
|
|
&FreeRegister( \$worldPos );
|
|
|
|
; Move it into the w component of the texture coords, as the wacky
|
|
; pixel shader wants it there.
|
|
mov oT1.w, $worldEyeVect.x
|
|
mov oT2.w, $worldEyeVect.y
|
|
mov oT3.w, $worldEyeVect.z
|
|
|
|
&AllocateRegister( \$tangentEyeVect );
|
|
|
|
; transform the eye vector to tangent space
|
|
dp3 $tangentEyeVect.x, $worldEyeVect, $vTangentS
|
|
dp3 $tangentEyeVect.y, $worldEyeVect, $vTangentT
|
|
dp3 $tangentEyeVect.z, $worldEyeVect, $vNormal
|
|
|
|
&Normalize( $tangentEyeVect );
|
|
mov oD0.xyz, $tangentEyeVect
|
|
|
|
&FreeRegister( \$tangentEyeVect );
|
|
|
|
; Get the magnitude of worldEyeVect
|
|
dp3 $worldEyeVect.w, $worldEyeVect, $worldEyeVect
|
|
rsq $worldEyeVect.w, $worldEyeVect.w
|
|
rcp $worldEyeVect.w, $worldEyeVect.w
|
|
|
|
; calculate the cheap water blend factor and stick it into oD0.a
|
|
; NOTE: This won't be perspective correct!!!!!
|
|
; OPTIMIZE: This could turn into a mad.
|
|
add $worldEyeVect.w, $worldEyeVect.w, -$SHADER_SPECIFIC_CONST_2.x
|
|
mul oD0.w, $worldEyeVect.w, $SHADER_SPECIFIC_CONST_2.y
|
|
|
|
&FreeRegister( \$worldEyeVect );
|
|
|
|
;------------------------------------------------------------------------------
|
|
; Texture coordinates
|
|
;------------------------------------------------------------------------------
|
|
dp4 oT0.x, $vTexCoord0, $SHADER_SPECIFIC_CONST_0
|
|
dp4 oT0.y, $vTexCoord0, $SHADER_SPECIFIC_CONST_1
|
|
|
|
|
|
|