--- a/build_tools/autorevision/autorevision.cpp	2011-10-23 22:05:12.000000000 +0200
+++ b/build_tools/autorevision/autorevision.cpp	2021-06-16 20:25:30.037820011 +0200
@@ -635,7 +635,7 @@
 
     const string cwd(GetWorkingDir());
     if (!ChangeDir(_workingDir))
-        return false;
+        return result;
 
     set_env("LANG", "C");
     set_env("LC_ALL", "C");
@@ -645,7 +645,7 @@
     ChangeDir(cwd);
 
     if (!process)
-        return false;
+        return result;
 
     char buf[1024];
     if (fgets(buf, sizeof(buf), process))
--- a/lib/ivis_opengl/piedraw.c	2011-10-23 22:05:14.000000000 +0200
+++ b/lib/ivis_opengl/piedraw.c	2025-01-09 17:19:47.927557356 +0100
@@ -648,53 +648,21 @@
 		op_depth_pass_back = GL_DECR_WRAP_EXT;
 	}
 
-	// generic 1-pass version
-	if (GLEE_EXT_stencil_two_side)
-	{
-		glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
-		glDisable(GL_CULL_FACE);
-		glStencilMask(~0);
-		glActiveStencilFaceEXT(GL_BACK);
-		glStencilOp(GL_KEEP, GL_KEEP, op_depth_pass_back);
-		glStencilFunc(GL_ALWAYS, 0, ~0);
-		glActiveStencilFaceEXT(GL_FRONT);
-		glStencilOp(GL_KEEP, GL_KEEP, op_depth_pass_front);
-		glStencilFunc(GL_ALWAYS, 0, ~0);
-
-		pie_ShadowDrawLoop();
-		
-		glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
-	}
-	// check for ATI-specific 1-pass version
-	else if (GLEE_ATI_separate_stencil)
-	{
-		glDisable(GL_CULL_FACE);
-		glStencilMask(~0);
-		glStencilOpSeparateATI(GL_BACK, GL_KEEP, GL_KEEP, op_depth_pass_back);
-		glStencilOpSeparateATI(GL_FRONT, GL_KEEP, GL_KEEP, op_depth_pass_front);
-		glStencilFunc(GL_ALWAYS, 0, ~0);
-
-		pie_ShadowDrawLoop();	
-	}
-	// fall back to default 2-pass version
-	else
-	{
-		glStencilMask(~0);
-		glStencilFunc(GL_ALWAYS, 0, ~0);
-		glEnable(GL_CULL_FACE);
+	glStencilMask(~0);
+	glStencilFunc(GL_ALWAYS, 0, ~0);
+	glEnable(GL_CULL_FACE);
 		
-		// Setup stencil for front-facing polygons
-		glCullFace(GL_BACK);
-		glStencilOp(GL_KEEP, GL_KEEP, op_depth_pass_front);
+	// Setup stencil for front-facing polygons
+	glCullFace(GL_BACK);
+	glStencilOp(GL_KEEP, GL_KEEP, op_depth_pass_front);
 
-		pie_ShadowDrawLoop();
+	pie_ShadowDrawLoop();
 
-		// Setup stencil for back-facing polygons
-		glCullFace(GL_FRONT);
-		glStencilOp(GL_KEEP, GL_KEEP, op_depth_pass_back);
+	// Setup stencil for back-facing polygons
+	glCullFace(GL_FRONT);
+	glStencilOp(GL_KEEP, GL_KEEP, op_depth_pass_back);
 
-		pie_ShadowDrawLoop();
-	}
+	pie_ShadowDrawLoop();
 
 	glEnable(GL_CULL_FACE);
 	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);