TMPro_Surface.cginc
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void VertShader(inout appdata_full v, out Input data)
{
v.vertex.x += _VertexOffsetX;
v.vertex.y += _VertexOffsetY;
UNITY_INITIALIZE_OUTPUT(Input, data);
float bold = step(v.texcoord1.y, 0);
// Generate normal for backface
float3 view = ObjSpaceViewDir(v.vertex);
v.normal *= sign(dot(v.normal, view));
#if USE_DERIVATIVE
data.param.y = 1;
#else
float4 vert = v.vertex;
float4 vPosition = UnityObjectToClipPos(vert);
float2 pixelSize = vPosition.w;
pixelSize /= float2(_ScaleX, _ScaleY) * mul((float2x2)UNITY_MATRIX_P, _ScreenParams.xy);
float scale = rsqrt(dot(pixelSize, pixelSize));
scale *= abs(v.texcoord1.y) * _GradientScale * 1.5;
scale = lerp(scale * (1 - _PerspectiveFilter), scale, abs(dot(UnityObjectToWorldNormal(v.normal.xyz), normalize(WorldSpaceViewDir(vert)))));
data.param.y = scale;
#endif
//float opacity = v.color.a;
data.param.x = (lerp(_WeightNormal, _WeightBold, bold) / 4.0 + _FaceDilate) * _ScaleRatioA * 0.5; //
v.texcoord1.xy = UnpackUV(v.texcoord1.x);
data.viewDirEnv = mul((float3x3)_EnvMatrix, WorldSpaceViewDir(v.vertex));
}
void PixShader(Input input, inout SurfaceOutput o)
{
#if USE_DERIVATIVE | BEVEL_ON
float3 delta = float3(1.0 / _TextureWidth, 1.0 / _TextureHeight, 0.0);
float4 smp4x = { tex2D(_MainTex, input.uv_MainTex - delta.xz).a,
tex2D(_MainTex, input.uv_MainTex + delta.xz).a,
tex2D(_MainTex, input.uv_MainTex - delta.zy).a,
tex2D(_MainTex, input.uv_MainTex + delta.zy).a };
#endif
#if USE_DERIVATIVE
// Screen space scaling reciprocal with anisotropic correction
float2 edgeNormal = Normalize(float2(smp4x.x - smp4x.y, smp4x.z - smp4x.w));
float2 res = float2(_TextureWidth * input.param.y, _TextureHeight);
float2 tdx = ddx(input.uv_MainTex)*res;
float2 tdy = ddy(input.uv_MainTex)*res;
float lx = length(tdx);
float ly = length(tdy);
float s = sqrt(min(lx, ly) / max(lx, ly));
s = lerp(1, s, abs(dot(normalize(tdx + tdy), edgeNormal)));
float scale = rsqrt(abs(tdx.x * tdy.y - tdx.y * tdy.x)) * (_GradientScale * 2) * s;
#else
float scale = input.param.y;
#endif
// Signed distance
float c = tex2D(_MainTex, input.uv_MainTex).a;
float sd = (.5 - c - input.param.x) * scale + .5;
float outline = _OutlineWidth*_ScaleRatioA * scale;
float softness = _OutlineSoftness*_ScaleRatioA * scale;
// Color & Alpha
float4 faceColor = _FaceColor;
float4 outlineColor = _OutlineColor;
faceColor *= input.color;
outlineColor.a *= input.color.a;
faceColor *= tex2D(_FaceTex, float2(input.uv2_FaceTex.x + _FaceUVSpeedX * _Time.y, input.uv2_FaceTex.y + _FaceUVSpeedY * _Time.y));
outlineColor *= tex2D(_OutlineTex, float2(input.uv2_OutlineTex.x + _OutlineUVSpeedX * _Time.y, input.uv2_OutlineTex.y + _OutlineUVSpeedY * _Time.y));
faceColor = GetColor(sd, faceColor, outlineColor, outline, softness);
faceColor.rgb /= max(faceColor.a, 0.0001);
#if BEVEL_ON
// Face Normal
float3 n = GetSurfaceNormal(smp4x, input.param.x);
// Bumpmap
float3 bump = UnpackNormal(tex2D(_BumpMap, input.uv2_FaceTex.xy)).xyz;
bump *= lerp(_BumpFace, _BumpOutline, saturate(sd + outline * 0.5));
bump = lerp(float3(0, 0, 1), bump, faceColor.a);
n = normalize(n - bump);
// Cubemap reflection
fixed4 reflcol = texCUBE(_Cube, reflect(input.viewDirEnv, mul((float3x3)unity_ObjectToWorld, n)));
float3 emission = reflcol.rgb * lerp(_ReflectFaceColor.rgb, _ReflectOutlineColor.rgb, saturate(sd + outline * 0.5)) * faceColor.a;
#else
float3 n = float3(0, 0, -1);
float3 emission = float3(0, 0, 0);
#endif
#if GLOW_ON
float4 glowColor = GetGlowColor(sd, scale);
glowColor.a *= input.color.a;
emission += glowColor.rgb*glowColor.a;
faceColor = BlendARGB(glowColor, faceColor);
faceColor.rgb /= max(faceColor.a, 0.0001);
#endif
// Set Standard output structure
o.Albedo = faceColor.rgb;
o.Normal = -n;
o.Emission = emission;
o.Specular = lerp(_FaceShininess, _OutlineShininess, saturate(sd + outline * 0.5));
o.Gloss = 1;
o.Alpha = faceColor.a;
}