// TextMesh Pro copyright © 2021 Unity Technologies ApS
// Licensed under the Unity Companion License for Unity-dependent projects--see http://www.unity3d.com/legal/licenses/Unity_Companion_License.
// Unless expressly provided otherwise, the Software under this license is made available strictly on an “AS IS” BASIS WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. Please review the license for details on these and other terms and conditions.
// NOTE: MRTK Shaders are versioned via the MRTK.Shaders.sentinel file.
// When making changes to any shader's source file, the value in the sentinel _must_ be incremented.
// Simplified SDF shader:
// - No Shading Option (bevel / bump / env map)
// - No Glow Option
// - Softness is applied on both side of the outline
// MRTK Additions
// - Single Pass Instanced Stereo Rendering Support
// - Support for Clipping Primitives (Plane, Sphere, Box)
// - ZWrite Property
Shader "Mixed Reality Toolkit/TextMeshPro" {
Properties {
_FaceColor ("Face Color", Color) = (1,1,1,1)
_FaceDilate ("Face Dilate", Range(-1,1)) = 0
_OutlineColor ("Outline Color", Color) = (0,0,0,1)
_OutlineWidth ("Outline Thickness", Range(0,1)) = 0
_OutlineSoftness ("Outline Softness", Range(0,1)) = 0
_UnderlayColor ("Border Color", Color) = (0,0,0,.5)
_UnderlayOffsetX ("Border OffsetX", Range(-1,1)) = 0
_UnderlayOffsetY ("Border OffsetY", Range(-1,1)) = 0
_UnderlayDilate ("Border Dilate", Range(-1,1)) = 0
_UnderlaySoftness ("Border Softness", Range(0,1)) = 0
_WeightNormal ("Weight Normal", float) = 0
_WeightBold ("Weight Bold", float) = .5
_ShaderFlags ("Flags", float) = 0
_ScaleRatioA ("Scale RatioA", float) = 1
_ScaleRatioB ("Scale RatioB", float) = 1
_ScaleRatioC ("Scale RatioC", float) = 1
_MainTex ("Font Atlas", 2D) = "white" {}
_TextureWidth ("Texture Width", float) = 512
_TextureHeight ("Texture Height", float) = 512
_GradientScale ("Gradient Scale", float) = 5
_ScaleX ("Scale X", float) = 1
_ScaleY ("Scale Y", float) = 1
_PerspectiveFilter ("Perspective Correction", Range(0, 1)) = 0.875
_Sharpness ("Sharpness", Range(-1,1)) = 0
_VertexOffsetX ("Vertex OffsetX", float) = 0
_VertexOffsetY ("Vertex OffsetY", float) = 0
_ClipRect ("Clip Rect", vector) = (-32767, -32767, 32767, 32767)
_MaskSoftnessX ("Mask SoftnessX", float) = 0
_MaskSoftnessY ("Mask SoftnessY", float) = 0
_StencilComp ("Stencil Comparison", Float) = 8
_Stencil ("Stencil ID", Float) = 0
_StencilOp ("Stencil Operation", Float) = 0
_StencilWriteMask ("Stencil Write Mask", Float) = 255
_StencilReadMask ("Stencil Read Mask", Float) = 255
_ColorMask ("Color Mask", Float) = 15
_ZWrite ("Depth Write", Float) = 0
}
SubShader {
Tags
{
"Queue"="Transparent"
"IgnoreProjector"="True"
"RenderType"="Transparent"
}
Stencil
{
Ref [_Stencil]
Comp [_StencilComp]
Pass [_StencilOp]
ReadMask [_StencilReadMask]
WriteMask [_StencilWriteMask]
}
Cull [_CullMode]
ZWrite[_ZWrite]
Lighting Off
Fog { Mode Off }
ZTest [unity_GUIZTestMode]
Blend One OneMinusSrcAlpha
ColorMask [_ColorMask]
Pass {
CGPROGRAM
#pragma vertex VertShader
#pragma fragment PixShader
#pragma shader_feature __ OUTLINE_ON
#pragma shader_feature __ UNDERLAY_ON UNDERLAY_INNER
#pragma multi_compile __ UNITY_UI_CLIP_RECT
#pragma multi_compile __ UNITY_UI_ALPHACLIP
#pragma multi_compile __ _CLIPPING_PLANE _CLIPPING_SPHERE _CLIPPING_BOX
#include "UnityCG.cginc"
#include "UnityUI.cginc"
#include "MixedRealityShaderUtils.cginc"
#if defined(_CLIPPING_PLANE) || defined(_CLIPPING_SPHERE) || defined(_CLIPPING_BOX)
#define _CLIPPING_PRIMITIVE
#else
#undef _CLIPPING_PRIMITIVE
#endif
// Direct include for portability.
//#include "TMPro_Properties.cginc"
// UI Editable properties
uniform sampler2D _FaceTex; // Alpha : Signed Distance
uniform float _FaceUVSpeedX;
uniform float _FaceUVSpeedY;
uniform fixed4 _FaceColor; // RGBA : Color + Opacity
uniform float _FaceDilate; // v[ 0, 1]
uniform float _OutlineSoftness; // v[ 0, 1]
uniform sampler2D _OutlineTex; // RGBA : Color + Opacity
uniform float _OutlineUVSpeedX;
uniform float _OutlineUVSpeedY;
uniform fixed4 _OutlineColor; // RGBA : Color + Opacity
uniform float _OutlineWidth; // v[ 0, 1]
uniform float _Bevel; // v[ 0, 1]
uniform float _BevelOffset; // v[-1, 1]
uniform float _BevelWidth; // v[-1, 1]
uniform float _BevelClamp; // v[ 0, 1]
uniform float _BevelRoundness; // v[ 0, 1]
uniform sampler2D _BumpMap; // Normal map
uniform float _BumpOutline; // v[ 0, 1]
uniform float _BumpFace; // v[ 0, 1]
uniform samplerCUBE _Cube; // Cube / sphere map
uniform fixed4 _ReflectFaceColor; // RGB intensity
uniform fixed4 _ReflectOutlineColor;
uniform float3 _EnvMatrixRotation;
uniform float4x4 _EnvMatrix;
uniform fixed4 _SpecularColor; // RGB intensity
uniform float _LightAngle; // v[ 0,Tau]
uniform float _SpecularPower; // v[ 0, 1]
uniform float _Reflectivity; // v[ 5, 15]
uniform float _Diffuse; // v[ 0, 1]
uniform float _Ambient; // v[ 0, 1]
uniform fixed4 _UnderlayColor; // RGBA : Color + Opacity
uniform float _UnderlayOffsetX; // v[-1, 1]
uniform float _UnderlayOffsetY; // v[-1, 1]
uniform float _UnderlayDilate; // v[-1, 1]
uniform float _UnderlaySoftness; // v[ 0, 1]
uniform fixed4 _GlowColor; // RGBA : Color + Intensity
uniform float _GlowOffset; // v[-1, 1]
uniform float _GlowOuter; // v[ 0, 1]
uniform float _GlowInner; // v[ 0, 1]
uniform float _GlowPower; // v[ 1, 1/(1+4*4)]
// API Editable properties
uniform float _ShaderFlags;
uniform float _WeightNormal;
uniform float _WeightBold;
uniform float _ScaleRatioA;
uniform float _ScaleRatioB;
uniform float _ScaleRatioC;
uniform float _VertexOffsetX;
uniform float _VertexOffsetY;
uniform float _MaskID;
uniform sampler2D _MaskTex;
uniform float4 _MaskCoord;
uniform float4 _ClipRect; // bottom left(x,y) : top right(z,w)
uniform float _MaskSoftnessX;
uniform float _MaskSoftnessY;
// Font Atlas properties
uniform sampler2D _MainTex;
uniform float _TextureWidth;
uniform float _TextureHeight;
uniform float _GradientScale;
uniform float _ScaleX;
uniform float _ScaleY;
uniform float _PerspectiveFilter;
uniform float _Sharpness;
#if defined(_CLIPPING_PLANE)
fixed _ClipPlaneSide;
float4 _ClipPlane;
#endif
#if defined(_CLIPPING_SPHERE)
fixed _ClipSphereSide;
float4x4 _ClipSphereInverseTransform;
#endif
#if defined(_CLIPPING_BOX)
fixed _ClipBoxSide;
float4x4 _ClipBoxInverseTransform;
#endif
struct vertex_t {
UNITY_VERTEX_INPUT_INSTANCE_ID
float4 vertex : POSITION;
float3 normal : NORMAL;
fixed4 color : COLOR;
float2 texcoord0 : TEXCOORD0;
float2 texcoord1 : TEXCOORD1;
};
struct pixel_t {
UNITY_VERTEX_INPUT_INSTANCE_ID
UNITY_VERTEX_OUTPUT_STEREO
float4 vertex : SV_POSITION;
fixed4 faceColor : COLOR;
fixed4 outlineColor : COLOR1;
float4 texcoord0 : TEXCOORD0; // Texture UV, Mask UV
half4 param : TEXCOORD1; // Scale(x), BiasIn(y), BiasOut(z), Bias(w)
half4 mask : TEXCOORD2; // Position in clip space(xy), Softness(zw)
#if (UNDERLAY_ON | UNDERLAY_INNER)
float4 texcoord1 : TEXCOORD3; // Texture UV, alpha, reserved
half2 underlayParam : TEXCOORD4; // Scale(x), Bias(y)
#endif
#if defined(_CLIPPING_PRIMITIVE)
float3 worldPosition : TEXCOORD5;
#endif
};
pixel_t VertShader(vertex_t input)
{
pixel_t output;
UNITY_INITIALIZE_OUTPUT(pixel_t, output);
UNITY_SETUP_INSTANCE_ID(input);
UNITY_TRANSFER_INSTANCE_ID(input, output);
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
float bold = step(input.texcoord1.y, 0);
float4 vert = input.vertex;
vert.x += _VertexOffsetX;
vert.y += _VertexOffsetY;
float4 vPosition = UnityObjectToClipPos(vert);
float2 pixelSize = vPosition.w;
pixelSize /= float2(_ScaleX, _ScaleY) * abs(mul((float2x2)UNITY_MATRIX_P, _ScreenParams.xy));
float scale = rsqrt(dot(pixelSize, pixelSize));
scale *= abs(input.texcoord1.y) * _GradientScale * (_Sharpness + 1);
if(UNITY_MATRIX_P[3][3] == 0) scale = lerp(abs(scale) * (1 - _PerspectiveFilter), scale, abs(dot(UnityObjectToWorldNormal(input.normal.xyz), normalize(WorldSpaceViewDir(vert)))));
float weight = lerp(_WeightNormal, _WeightBold, bold) / 4.0;
weight = (weight + _FaceDilate) * _ScaleRatioA * 0.5;
float layerScale = scale;
scale /= 1 + (_OutlineSoftness * _ScaleRatioA * scale);
float bias = (0.5 - weight) * scale - 0.5;
float outline = _OutlineWidth * _ScaleRatioA * 0.5 * scale;
float opacity = input.color.a;
#if (UNDERLAY_ON | UNDERLAY_INNER)
opacity = 1.0;
#endif
fixed4 faceColor = fixed4(input.color.rgb, opacity) * _FaceColor;
faceColor.rgb *= faceColor.a;
fixed4 outlineColor = _OutlineColor;
outlineColor.a *= opacity;
outlineColor.rgb *= outlineColor.a;
outlineColor = lerp(faceColor, outlineColor, sqrt(min(1.0, (outline * 2))));
#if (UNDERLAY_ON | UNDERLAY_INNER)
layerScale /= 1 + ((_UnderlaySoftness * _ScaleRatioC) * layerScale);
float layerBias = (.5 - weight) * layerScale - .5 - ((_UnderlayDilate * _ScaleRatioC) * .5 * layerScale);
float x = -(_UnderlayOffsetX * _ScaleRatioC) * _GradientScale / _TextureWidth;
float y = -(_UnderlayOffsetY * _ScaleRatioC) * _GradientScale / _TextureHeight;
float2 layerOffset = float2(x, y);
#endif
// Generate UV for the Masking Texture
float4 clampedRect = clamp(_ClipRect, -2e10, 2e10);
float2 maskUV = (vert.xy - clampedRect.xy) / (clampedRect.zw - clampedRect.xy);
// Populate structure for pixel shader
output.vertex = vPosition;
output.faceColor = faceColor;
output.outlineColor = outlineColor;
output.texcoord0 = float4(input.texcoord0.x, input.texcoord0.y, maskUV.x, maskUV.y);
output.param = half4(scale, bias - outline, bias + outline, bias);
output.mask = half4(vert.xy * 2 - clampedRect.xy - clampedRect.zw, 0.25 / (0.25 * half2(_MaskSoftnessX, _MaskSoftnessY) + pixelSize.xy));
#if (UNDERLAY_ON || UNDERLAY_INNER)
output.texcoord1 = float4(input.texcoord0 + layerOffset, input.color.a, 0);
output.underlayParam = half2(layerScale, layerBias);
#endif
#if defined(_CLIPPING_PRIMITIVE)
output.worldPosition = mul(unity_ObjectToWorld, vert).xyz;
#endif
return output;
}
// PIXEL SHADER
fixed4 PixShader(pixel_t input) : SV_Target
{
UNITY_SETUP_INSTANCE_ID(input);
half d = tex2D(_MainTex, input.texcoord0.xy).a * input.param.x;
half4 c = input.faceColor * saturate(d - input.param.w);
#ifdef OUTLINE_ON
c = lerp(input.outlineColor, input.faceColor, saturate(d - input.param.z));
c *= saturate(d - input.param.y);
#endif
#if UNDERLAY_ON
d = tex2D(_MainTex, input.texcoord1.xy).a * input.underlayParam.x;
c += float4(_UnderlayColor.rgb * _UnderlayColor.a, _UnderlayColor.a) * saturate(d - input.underlayParam.y) * (1 - c.a);
#endif
#if UNDERLAY_INNER
half sd = saturate(d - input.param.z);
d = tex2D(_MainTex, input.texcoord1.xy).a * input.underlayParam.x;
c += float4(_UnderlayColor.rgb * _UnderlayColor.a, _UnderlayColor.a) * (1 - saturate(d - input.underlayParam.y)) * sd * (1 - c.a);
#endif
// Alternative implementation to UnityGet2DClipping with support for softness.
#if UNITY_UI_CLIP_RECT
half2 m = saturate((_ClipRect.zw - _ClipRect.xy - abs(input.mask.xy)) * input.mask.zw);
c *= m.x * m.y;
#endif
#if (UNDERLAY_ON | UNDERLAY_INNER)
c *= input.texcoord1.z;
#endif
// Primitive clipping.
#if defined(_CLIPPING_PRIMITIVE)
float primitiveDistance = 1.0;
#if defined(_CLIPPING_PLANE)
primitiveDistance = min(primitiveDistance, PointVsPlane(input.worldPosition, _ClipPlane) * _ClipPlaneSide);
#endif
#if defined(_CLIPPING_SPHERE)
primitiveDistance = min(primitiveDistance, PointVsSphere(input.worldPosition, _ClipSphereInverseTransform) * _ClipSphereSide);
#endif
#if defined(_CLIPPING_BOX)
primitiveDistance = min(primitiveDistance, PointVsBox(input.worldPosition, _ClipBoxInverseTransform) * _ClipBoxSide);
#endif
c *= step(0.0, primitiveDistance);
#endif
#if UNITY_UI_ALPHACLIP
clip(c.a - 0.001);
#endif
return c;
}
ENDCG
}
}
CustomEditor "Microsoft.MixedReality.Toolkit.Editor.MixedRealityTextMeshProShaderGUI"
}
