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86 lines
2.8 KiB
86 lines
2.8 KiB
vs.1.1 |
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# DYNAMIC: "DOWATERFOG" "0..1" |
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# DYNAMIC: "SKINNING" "0..1" |
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;------------------------------------------------------------------------------ |
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; Constants specified by the app |
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; c0 = (0, 1, 2, 0.5) |
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; c1 = (1/2.2, 0, 0, 0) |
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; c2 = camera position *in world space* |
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; c4-c7 = modelViewProj matrix (transpose) |
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; c8-c11 = ViewProj matrix (transpose) |
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; c12-c15 = model->view matrix (transpose) |
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; c16 = [fogStart, fogEnd, fogRange, undefined] |
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; |
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; Vertex components (as specified in the vertex DECL) |
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; $vPos = Position |
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; $vTexCoord0.xy = TexCoord0 |
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;------------------------------------------------------------------------------ |
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#include "macros.vsh" |
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;------------------------------------------------------------------------------ |
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; Vertex blending |
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;------------------------------------------------------------------------------ |
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&AllocateRegister( \$worldPos ); |
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&AllocateRegister( \$worldNormal ); |
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&SkinPositionAndNormal( $worldPos, $worldNormal ); |
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;------------------------------------------------------------------------------ |
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; Transform the position from world to proj 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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; Fog |
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;------------------------------------------------------------------------------ |
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&CalcFog( $worldPos, $projPos ); |
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&FreeRegister( \$worldPos ); |
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;------------------------------------------------------------------------------ |
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; Transform the normal from world to proj space |
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;------------------------------------------------------------------------------ |
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&AllocateRegister( \$projNormal ); |
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; only do X and Y since that's all we care about |
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dp3 $projNormal.x, $worldNormal, $cViewProj0 |
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dp3 $projNormal.y, $worldNormal, $cViewProj1 |
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&FreeRegister( \$worldNormal ); |
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;------------------------------------------------------------------------------ |
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; Texture coordinates |
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;------------------------------------------------------------------------------ |
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; NOTE: projPos isn't projPos after this point. :) |
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; divide by z |
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rcp $projPos.w, $projPos.w |
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mul $projPos.xy, $projPos.w, $projPos.xy |
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; map from -1..1 to 0..1 |
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mad $projPos.xy, $projPos.xy, $cHalf, $cHalf |
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; tweak with the texcoords based on the normal and $refractionamount |
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mad $projPos.xy, $projNormal.xy, -$SHADER_SPECIFIC_CONST_4.xy, $projPos.xy ; FIXME |
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; invert y |
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add $projPos.y, $cOne, -$projPos.y |
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; hack scale for nvidia (Power of two texcoords are screwed.) |
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mul oT0.xy, $projPos.xy, $SHADER_SPECIFIC_CONST_5.xy |
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&FreeRegister( \$projPos ); |
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&FreeRegister( \$projNormal );
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