🍓 Alpha cutoff

shaders/billboard/glsl.frag

@@ -19,6 +19,7 @@ struct Material {
   sampler2D specularTex;
   sampler2D normalTex;
   bool hasNormalTex;
+  float alphaCutoff;
 };
 
 // From vertex shader
@@ -37,11 +38,15 @@ void main() {
 
   // Magic to make transparent sprites work, without blending
   // Somehow this also works with the shadow map render pass, which is a bonus
-  if (texel.a < 0.75) {
+  if (texel.a < u_mat.alphaCutoff) {
     discard;
   }
 
   vec3 colour = texel.rgb * u_mat.diffuse * v_lighting;
+  float e = u_mat.emissive.r + u_mat.emissive.g + u_mat.emissive.b;
+  if (e > 0.0) {
+    colour = texel.rgb * u_mat.emissive;
+  }
 
   // Gamma correction, as GL_FRAMEBUFFER_SRGB is not supported on WebGL
   colour = pow(colour, vec3(1.0 / u_gamma));