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95 lines
2.5 KiB
HLSL
95 lines
2.5 KiB
HLSL
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#include "Common.hlsli"
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#include "Quaternion.hlsli"
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cbuffer VSSceneVars : register(b0)
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{
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float4x4 ViewProj;
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}
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cbuffer VSEntityVars : register(b1)
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{
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float4 CamRel;
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float4 Orientation;
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uint HasSkeleton;
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uint HasTransforms;
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uint Pad0;
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uint Pad1;
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float3 Scale;
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uint Pad2;
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}
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cbuffer VSModelVars : register(b2)
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{
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float4x4 Transform;
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}
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cbuffer TreesLodShaderVSGeometryVars : register(b3)
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{
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float4 AlphaTest;
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float4 AlphaScale;
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float4 UseTreeNormals;
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float4 treeLod2Normal;
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float4 treeLod2Params;
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}
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struct VS_INPUT
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{
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float4 Position : POSITION;
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float3 Normal : NORMAL;
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float2 Texcoord0 : TEXCOORD0;
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float2 Texcoord1 : TEXCOORD1;
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float2 Texcoord2 : TEXCOORD2;
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float2 Texcoord3 : TEXCOORD3;
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float4 Colour0 : COLOR0;
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float4 Colour1 : COLOR1;
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};
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struct VS_OUTPUT
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{
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float4 Position : SV_POSITION;
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float3 Normal : NORMAL;
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float2 Texcoord : TEXCOORD0;
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float4 Colour : COLOR0;
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};
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VS_OUTPUT main(VS_INPUT input)
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{
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VS_OUTPUT output;
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//first find the base point of the billboard.. full transformation may not be necessary!
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float3 ipos = input.Position.xyz;
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float3 tpos = (HasTransforms == 1) ? mul(float4(ipos, 1), Transform).xyz : ipos;
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float3 spos = tpos;// *Scale;
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float3 bpos = mulvq(spos, Orientation);
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float3 opos = CamRel.xyz + bpos;
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float3 dir = normalize(opos);
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float3 bbside = normalize(cross(dir, treeLod2Normal.xyz));
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float2 bbvpos = treeLod2Params.xy*(0.5 - input.Texcoord0)*input.Texcoord2;
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opos += bbside*bbvpos.x;
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opos += treeLod2Normal.xyz*bbvpos.y;
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//float3 ipos = input.Position.xyz + float3(treeLod2Params.xy*(input.Texcoord0-0.5)*input.Texcoord2,0);
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//float3 tpos = (HasTransforms == 1) ? mul(float4(ipos, 1), Transform).xyz : ipos;
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//float3 spos = tpos;// *Scale;
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//float3 bpos = mulvq(spos, Orientation);
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//float3 opos = CamRel.xyz + bpos;
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float4 pos = float4(opos, 1);
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float4 cpos = mul(pos, ViewProj);
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cpos.z = DepthFunc(cpos.zw);
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//float3 inorm = input.Normal;
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//float3 tnorm = (HasTransforms == 1) ? mul(inorm, (float3x3)Transform) : inorm;
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//float3 bnorm = normalize(mulvq(tnorm, Orientation));
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float3 bnorm = normalize(-pos.xyz); //normal pointing towards the camera...
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output.Position = cpos;
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output.Normal = bnorm;
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output.Texcoord = input.Texcoord1;
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output.Colour = input.Colour0;// float4(input.Texcoord2, 0, 1);// input.Colour1;
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return output;
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}
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