Only allow gl_FragDepth in desktop GL

GlennFolker · Feb 18, 2024 · e96ec1a · e96ec1a
1 parent 7dccada
commit e96ec1a
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diff --git a/assets/shaders/confictura/portal-forcefield.frag b/assets/shaders/confictura/portal-forcefield.frag
@@ -224,4 +224,10 @@ void main(){
 
     vec3 outlineColor = v_color.xyz * pow(max(1.0 - v_color.a - 0.5, 0.0) * 2.0, 4.0) * outline;
     gl_FragColor = vec4(baseColor + outlineColor, 1.0);
+
+    #ifdef HAS_GL_FRAGDEPTH
+    float far = gl_DepthRange.far, near = gl_DepthRange.near;
+    vec4 clip = u_proj * vec4(u_camPos + ray * intersect.x, 1.0);
+    gl_FragDepth = (((far - near) * (clip.z / clip.w)) + near + far) / 2.0;
+    #endif
 }
diff --git a/src/confictura/graphics/CShaders.java b/src/confictura/graphics/CShaders.java
@@ -2,9 +2,11 @@
 
 import arc.files.*;
 import arc.graphics.gl.*;
+import arc.graphics.gl.GLVersion.*;
 import confictura.graphics.shaders.*;
 import mindustry.*;
 
+import static arc.Core.*;
 import static mindustry.Vars.*;
 
 /**
@@ -23,10 +25,19 @@ private CShaders(){
 
     /** Loads the shaders. Client-side and main thread only! */
     public static void load(){
+        String prevVert = Shader.prependVertexCode, prevFrag = Shader.prependFragmentCode;
+
+        if(graphics.getGLVersion().type == GlType.OpenGL){
+            Shader.prependFragmentCode = "#define HAS_GL_FRAGDEPTH\n";
+        }
+
         depth = new DepthShader();
         depthAtmosphere = new DepthAtmosphereShader();
         portalForcefield = new PortalForcefieldShader();
         celestial = new CelestialShader();
+
+        Shader.prependVertexCode = prevVert;
+        Shader.prependFragmentCode = prevFrag;
     }
 
     /**