From 76dc3f0af36775d2fdaab61134dd0f875ee48292 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Sat, 30 Dec 2023 19:32:19 -0500
Subject: WIP graphics engine rewrite.

---
 data/shaders/path-stroke-frag.glsl | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

(limited to 'data/shaders/path-stroke-frag.glsl')

diff --git a/data/shaders/path-stroke-frag.glsl b/data/shaders/path-stroke-frag.glsl
index 9682c8f..324e3cf 100644
--- a/data/shaders/path-stroke-frag.glsl
+++ b/data/shaders/path-stroke-frag.glsl
@@ -14,6 +14,7 @@ in vec2 fragTex;
 in float fragStrokeLength;
 #endif
 
+#ifdef GLSL120
 uniform vec4 color;
 uniform float feather;
 uniform int strokeClosed;
@@ -21,6 +22,19 @@ uniform float strokeWidth;
 uniform int strokeCap;
 uniform int strokeMiterStyle;
 uniform float strokeMiterLimit;
+#else
+layout (std140) uniform Stroke
+{
+  mat4 mvp;
+  vec4 color;
+  float feather;
+  float strokeWidth;
+  float strokeMiterLimit;
+  int strokeClosed;
+  int strokeCap;
+  int strokeMiterStyle;
+};
+#endif
 
 float infinity = 1.0 / 0.0;
 
@@ -47,7 +61,7 @@ void main(void) {
 
     if (strokeCap == 0) { // none
       d = infinity;
-    } else if (strokeCap == 1) { // butt
+    } else if (strokeCap == 1) { // butt (huh huh)
       d = max(dx + hw - 2 * feather, dy);
     } else if (strokeCap == 2) { // square
       d = max(dx, dy);
@@ -58,7 +72,7 @@ void main(void) {
     } else if (strokeCap == 5) { // triangle in
       d = max(dy, hw - feather + dx - dy);
     }
-    // Stroke inner/join
+  // Stroke inner/join
   } else {
     d = abs(v);
   }
-- 
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