From 2654e9c9c1915a237201ec35f6c6794de66de770 Mon Sep 17 00:00:00 2001
From: Jeroen Bakker <jbakker>
Date: Fri, 28 Aug 2020 14:41:36 +0200
Subject: Fix T80141: Fix Compiling Workbench Volume Shaders (Mesa 20.0.8)
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Default mesa driver for ubuntu 20.04 fails when a name is defined twice.
M_PI is defined in both `common_workbench_lib` and `common_math_lib`. This patch
remove the define out of common_workbench_lib

For reference it fails on https://github.com/mesa3d/mesa/blob/mesa-20.0.8/src/compiler/glsl/glcpp/glcpp-parse.y#L1186
during the check if the macros are the same.

Reviewed By: Clément Foucault

Differential Revision: https://developer.blender.org/D8741
---
 source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl | 1 -
 1 file changed, 1 deletion(-)

diff --git a/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl
index eb61edca6c7..122c99ca536 100644
--- a/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl
+++ b/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl
@@ -1,6 +1,5 @@
 
 #define EPSILON 0.00001
-#define M_PI 3.14159265358979323846
 
 #define CAVITY_BUFFER_RANGE 4.0
 
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