Add Font shader;

etc/shaders.h

@@ -1,6 +1,8 @@
 #include "shaders/unlit.vert.h"
 #include "shaders/unlit.frag.h"
 
+#include "shaders/font.frag.h"
+
 #include "shaders/lovr.glsl.h"
 
 #define LOCATION_POSITION 10

etc/shaders/font.frag

@@ -0,0 +1,24 @@
+#version 460
+#extension GL_EXT_multiview : require
+#extension GL_GOOGLE_include_directive : require
+#extension GL_EXT_samplerless_texture_functions : require
+
+#include "lovr.glsl"
+
+float screenPxRange() {
+  vec2 screenTexSize = vec2(1.) / fwidth(FragUV);
+  return max(.5 * dot(Material.sdfRange, screenTexSize), 1.);
+}
+
+float median(float r, float g, float b) {
+  return max(min(r, g), min(max(r, g), b));
+}
+
+void main() {
+  vec3 msdf = texture(sampler2D(Texture, Sampler), FragUV).rgb;
+  float sdf = median(msdf.r, msdf.g, msdf.b);
+  float screenPxDistance = screenPxRange() * (sdf - .5);
+  float alpha = clamp(screenPxDistance + .5, 0., 1.);
+  if (alpha <= 0.) discard;
+  PixelColors[0] = vec4(FragColor.rgb, alpha);
+}

etc/shaders/lovr.glsl

@@ -22,6 +22,7 @@ struct MaterialData {
   vec4 glow;
   vec2 uvShift;
   vec2 uvScale;
+  vec2 sdfRange;
   float metalness;
   float roughness;
   float clearcoat;
@@ -31,7 +32,6 @@ struct MaterialData {
   float normalScale;
   float alphaCutoff;
   float pointSize;
-  float sdfRange;
 };
 
 layout(set = 1, binding = 0) uniform MaterialBlock { MaterialData Material; };

src/modules/data/modelData.h

@@ -99,6 +99,7 @@ typedef struct {
   float glow[4];
   float uvShift[2];
   float uvScale[2];
+  float sdfRange[2];
   float metalness;
   float roughness;
   float clearcoat;
@@ -108,7 +109,6 @@ typedef struct {
   float normalScale;
   float alphaCutoff;
   float pointSize;
-  float sdfRange;
   uint32_t texture;
   uint32_t glowTexture;
   uint32_t occlusionTexture;

src/modules/graphics/graphics.h

@@ -291,6 +291,7 @@ typedef struct {
   float glow[4];
   float uvShift[2];
   float uvScale[2];
+  float sdfRange[2];
   float metalness;
   float roughness;
   float clearcoat;
@@ -300,7 +301,6 @@ typedef struct {
   float normalScale;
   float alphaCutoff;
   float pointSize;
-  float sdfRange;
 } MaterialData;
 
 typedef struct {