81 lines
3.0 KiB
GLSL
81 lines
3.0 KiB
GLSL
vs.1.1
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;------------------------------------------------------------------------------
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; $SHADER_SPECIFIC_CONST_0 = eyeball origin
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; $SHADER_SPECIFIC_CONST_1 = eyeball up * 0.5
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; $SHADER_SPECIFIC_CONST_2 = iris projection U
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; $SHADER_SPECIFIC_CONST_3 = iris projection V
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; $SHADER_SPECIFIC_CONST_4 = glint projection U
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; $SHADER_SPECIFIC_CONST_5 = glint projection V
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;------------------------------------------------------------------------------
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# STATIC: "HALF_LAMBERT" "0..1"
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# DYNAMIC: "DOWATERFOG" "0..1"
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# DYNAMIC: "LIGHT_COMBO" "0..21"
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# DYNAMIC: "SKINNING" "0..1"
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#include "macros.vsh"
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;------------------------------------------------------------------------------
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; Vertex blending (whacks r1-r7, positions in r7)
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;------------------------------------------------------------------------------
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&AllocateRegister( \$worldPos );
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&SkinPosition( $worldPos );
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;------------------------------------------------------------------------------
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; Transform the position from world to view space
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;------------------------------------------------------------------------------
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&AllocateRegister( \$projPos );
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dp4 $projPos.x, $worldPos, $cViewProj0
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dp4 $projPos.y, $worldPos, $cViewProj1
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dp4 $projPos.z, $worldPos, $cViewProj2
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dp4 $projPos.w, $worldPos, $cViewProj3
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mov oPos, $projPos
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;------------------------------------------------------------------------------
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; Normal is based on vertex position
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;------------------------------------------------------------------------------
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&AllocateRegister( \$worldNormal );
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&AllocateRegister( \$normalDotUp );
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sub $worldNormal, $worldPos, $SHADER_SPECIFIC_CONST_0 ; Normal = (Pos - Eye origin)
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dp3 $normalDotUp, $worldNormal, $SHADER_SPECIFIC_CONST_1 ; Normal -= 0.5f * (Normal dot Eye Up) * Eye Up
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mul $normalDotUp, $normalDotUp, $cHalf
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mad $worldNormal, -$normalDotUp, $SHADER_SPECIFIC_CONST_1, $worldNormal
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&FreeRegister( \$normalDotUp );
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; normalize the normal
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&Normalize( $worldNormal );
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;------------------------------------------------------------------------------
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; Lighting
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;------------------------------------------------------------------------------
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&DoLighting( $worldPos, $worldNormal );
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&FreeRegister( \$worldNormal );
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;------------------------------------------------------------------------------
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; Fog
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;------------------------------------------------------------------------------
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&CalcFog( $worldPos, $projPos );
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&FreeRegister( \$projPos );
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;------------------------------------------------------------------------------
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; Texture coordinates
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; Texture 0 is the base texture
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; Texture 1 is a planar projection used for the iris
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; Texture 2 is a planar projection used for the glint
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;------------------------------------------------------------------------------
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mov oT0, $vTexCoord0
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dp4 oT1.x, $SHADER_SPECIFIC_CONST_2, $worldPos
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dp4 oT1.y, $SHADER_SPECIFIC_CONST_3, $worldPos
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dp4 oT2.x, $SHADER_SPECIFIC_CONST_4, $worldPos
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dp4 oT2.y, $SHADER_SPECIFIC_CONST_5, $worldPos
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&FreeRegister( \$worldPos );
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