Fix first stroke not drawing because it has Z=0

README.txt

@@ -67,7 +67,7 @@ Release:
         - Set up VAOs
         - We are calling "geometry_prepare_stroke" twice for some reason
         - Replace "geometry_add_dummy_stroke" with something not [so] cursed
-        - Automatically extract locations from shaders (see nitka project for code examples)
+        + Automatically extract locations from shaders (see nitka project for code examples)
     - Presentation / "marketing"
         - Title (InfiNotes? MegaDesk?)
         - Icon

client/webgl_shaders.js

@@ -68,7 +68,7 @@ const sdf_vs_src = `#version 300 es
             screen02 += vec2(100.0); // shift offscreen
         }
 
-        gl_Position = vec4(screen02 - 1.0, (float(stroke_index) / float(u_stroke_count)) * 2.0 - 1.0, 1.0);
+        gl_Position = vec4(screen02 - 1.0, (float(stroke_index + 1) / float(u_stroke_count)) * 2.0 - 1.0, 1.0);
     }
 `;
 
@@ -323,10 +323,8 @@ function init_webgl(state, context) {
     gl.enable(gl.BLEND);
     gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
 
-    /*
     gl.enable(gl.DEPTH_TEST);
     gl.depthFunc(gl.NOTEQUAL);
-    */
 
     context.gpu_timer_ext = gl.getExtension('EXT_disjoint_timer_query_webgl2');
     if (context.gpu_timer_ext === null) {