45 lines
1.8 KiB
HLSL
45 lines
1.8 KiB
HLSL
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#ifndef POI_DECAL
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#define POI_DECAL
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POI_TEXTURE_NOSAMPLER(_DecalTexture);
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POI_TEXTURE_NOSAMPLER(_DecalMask);
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float4 _DecalColor;
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fixed _DecalTiled;
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fixed _DecalBlendAdd;
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fixed _DecalBlendMultiply;
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fixed _DecalBlendReplace;
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half _DecalRotation;
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half2 _DecalScale;
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half2 _DecalPosition;
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half _DecalRotationSpeed;
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void applyDecal(inout float4 albedo)
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{
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float2 uv = poiMesh.uv[_DecalTextureUV];
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float2 decalCenter = _DecalPosition;
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float theta = radians(_DecalRotation + _Time.z * _DecalRotationSpeed);
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float cs = cos(theta);
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float sn = sin(theta);
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uv = float2((uv.x - decalCenter.x) * cs - (uv.y - decalCenter.y) * sn + decalCenter.x, (uv.x - decalCenter.x) * sn + (uv.y - decalCenter.y) * cs + decalCenter.y);
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uv = remap(uv, float2(0, 0) - _DecalScale / 2 + _DecalPosition, _DecalScale / 2 + _DecalPosition, float2(0, 0), float2(1, 1));
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half decalAlpha = 1;
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//float2 uv = TRANSFORM_TEX(poiMesh.uv[_DecalTextureUV], _DecalTexture) + _Time.x * _DecalTexturePan;
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float4 decalColor = POI2D_SAMPLER_PAN(_DecalTexture, _MainTex, uv, _DecalTexturePan);
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decalAlpha *= POI2D_SAMPLER_PAN(_DecalMask, _MainTex, poiMesh.uv[_DecalMaskUV], _DecalMaskPan).r;
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UNITY_BRANCH
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if (!_DecalTiled)
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{
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if(uv.x > 1 || uv.y > 1 || uv.x < 0 || uv.y < 0)
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{
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decalAlpha = 0;
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}
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}
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albedo.rgb = lerp(albedo.rgb, decalColor.rgb, decalColor.a * decalAlpha * _DecalBlendReplace);
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albedo.rgb *= lerp(1, decalColor.rgb, decalColor.a * decalAlpha * _DecalBlendMultiply);
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albedo.rgb += decalColor.rgb * decalColor.a * decalAlpha * _DecalBlendAdd;
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albedo = saturate(albedo);
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}
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#endif
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