68 lines
1.9 KiB
Plaintext
68 lines
1.9 KiB
Plaintext
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#include "common.h"
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uniform float3x4 m_xform;
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uniform float3x4 m_xform_v;
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uniform float4 consts; // {1/quant,1/quant,???,???}
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uniform float4 c_scale,c_bias,wind,wave;
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uniform float2 c_sun; // x=*, y=+
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v2p_flat main (v_tree I)
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{
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I.Nh = unpack_D3DCOLOR(I.Nh);
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I.T = unpack_D3DCOLOR(I.T);
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I.B = unpack_D3DCOLOR(I.B);
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v2p_flat o;
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// Transform to world coords
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float3 pos = mul (m_xform, I.P);
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float H = I.P;
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//
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float2 result = 0;
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float4 f_pos = float4(pos.x+result.x, pos.y, pos.z+result.y, 1);
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//Normal mapping
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float3 N = unpack_bx2(I.Nh);
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float3 sphereOffset = float3(0.0, 1.0, 0.0);
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float3 sphereScale = float3(1.0, 2.0, 1.0);
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float3 sphereN = normalize(sphereScale * I.P.xyz + sphereOffset); //Spherical normals trick
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float3 flatN = (float3(0, 1, 0));
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/*
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float3 camFacingN = normalize((f_pos - eye_position.xyz) * float3(-1,0,-1));
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sphereN = lerp(camFacingN, sphereN, saturate(H)); //roots face the camera, the tips face the sky
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sphereN.xz *= 0.5;
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sphereN.y = sqrt(1 - saturate(dot(sphereN.xz, sphereN.xz)));
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sphereN = normalize(sphereN);
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*/
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//foliage
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float foliageMat = 0.5; //foliage
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//float foliageMask = saturate(abs(xmaterial-foliageMat)-0.02); //foliage
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float foliageMask = (abs(xmaterial-foliageMat) >= 0.2) ? 1 : 0; //foliage
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//float foliageMask = 1; //foliage
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N = normalize(lerp(N, sphereN, foliageMask)); //blend to foliage normals
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// Final xform(s)
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float3 Pe = mul (m_V, f_pos );
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//float3 Pe = mul(m_V, float4(pos.xyz,1));
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float hemi = I.Nh.w*c_scale.w + c_bias.w;
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//float hemi = I.Nh.w;
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o.hpos = mul (m_VP, f_pos );
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o.N = mul ((float3x3)m_xform_v, N );
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o.tcdh = float4 ((I.tc * consts).xyyy );
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o.position = float4 (Pe, hemi );
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#if defined(USE_R2_STATIC_SUN) && !defined(USE_LM_HEMI)
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float suno = I.Nh.w * c_sun.x + c_sun.y ;
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o.tcdh.w = suno; // (,,,dir-occlusion)
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#endif
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#ifdef USE_TDETAIL
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o.tcdbump = o.tcdh*dt_params; // dt tc
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#endif
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return o;
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}
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FXVS;
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