OpenGL: tweak legacy 2D shader

EXT_gpu_shader4 lets us say “noperspective” in GLSL #version 120 just
like in later GLSL.

Mac shader now matches modern GLSL available on other platforms.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/gpu/shaders/gpu_shader_2D_smooth_color_vert.glsl b/source/blender/gpu/shaders/gpu_shader_2D_smooth_color_vert.glsl
index 49bed5db430..01606622c78 100644
--- a/source/blender/gpu/shaders/gpu_shader_2D_smooth_color_vert.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_2D_smooth_color_vert.glsl
@@ -3,7 +3,7 @@
   attribute vec2 pos;
   attribute vec4 color;
 
-  varying vec4 finalColor;
+  noperspective varying vec4 finalColor;
 #else
   in vec2 pos;
   in vec4 color;