diff -pruN libplacebo-v2.72.0.orig/src/glsl/glslang.cc libplacebo-v2.72.0/src/glsl/glslang.cc
--- libplacebo-v2.72.0.orig/src/glsl/glslang.cc	2020-11-08 18:06:34.161048329 +1100
+++ libplacebo-v2.72.0/src/glsl/glslang.cc	2020-11-08 18:07:28.970375008 +1100
@@ -23,7 +23,7 @@ extern "C" {
 }
 
 #include <glslang/Include/ResourceLimits.h>
-#include <glslang/Include/revision.h>
+#include <glslang/build_info.h>
 #include <glslang/Public/ShaderLang.h>
 #include <SPIRV/GlslangToSpv.h>
 
@@ -36,7 +36,7 @@ static int pl_glslang_refcount;
 
 int pl_glslang_version()
 {
-    return GLSLANG_PATCH_LEVEL;
+    return GLSLANG_VERSION_MAJOR;
 }
 
 bool pl_glslang_init()
@@ -78,7 +78,7 @@ struct pl_glslang_res *pl_glslang_compil
     if (api_ver >= EShTargetVulkan_1_1)
         spirv_version = EShTargetSpv_1_3;
 
-#if GLSLANG_PATCH_LEVEL >= 3667
+#if GLSLANG_VERSION_MAJOR >= 11
     if (api_ver >= EShTargetVulkan_1_2)
         spirv_version = EShTargetSpv_1_5;
 #endif
@@ -200,7 +200,7 @@ const TBuiltInResource DefaultTBuiltInRe
     /* .MaxCullDistances = */ 8,
     /* .MaxCombinedClipAndCullDistances = */ 8,
     /* .MaxSamples = */ 4,
-#if GLSLANG_PATCH_LEVEL >= 2892
+#if GLSLANG_VERSION_MAJOR >= 11
     /* .maxMeshOutputVerticesNV = */ 256,
     /* .maxMeshOutputPrimitivesNV = */ 512,
     /* .maxMeshWorkGroupSizeX_NV = */ 32,
@@ -211,6 +211,9 @@ const TBuiltInResource DefaultTBuiltInRe
     /* .maxTaskWorkGroupSizeZ_NV = */ 1,
     /* .maxMeshViewCountNV = */ 4,
 #endif
+#if GLSLANG_VERSION_MAJOR >= 11
+    /* .maxDualSourceDrawBuffersEXT = */ 1,
+#endif
 
     /* .limits = */ {
         /* .nonInductiveForLoops = */ 1,
diff -pruN libplacebo-v2.72.0.orig/src/meson.build libplacebo-v2.72.0/src/meson.build
--- libplacebo-v2.72.0.orig/src/meson.build	2020-11-08 18:06:34.161048329 +1100
+++ libplacebo-v2.72.0/src/meson.build	2020-11-08 18:06:43.350935445 +1100
@@ -49,7 +49,7 @@ endif
 
 # work-arounds for glslang braindeath
 glslang_combined = disabler()
-glslang_min_ver = 2763
+glslang_min_ver = 11
 glslang_req = get_option('glslang')
 
 if glslang_req.auto() and shaderc.found()
@@ -83,8 +83,8 @@ else
 endif
 
 if glslang_found
-  glslang_ver = cxx.get_define('GLSLANG_PATCH_LEVEL',
-      prefix: '#include <glslang/Include/revision.h>'
+  glslang_ver = cxx.get_define('GLSLANG_VERSION_MAJOR',
+      prefix: '#include <glslang/build_info.h>'
   ).to_int()
 
   if glslang_ver >= glslang_min_ver