From 2d94d8d06def4a96a8727e148fe12e2095c6799c Mon Sep 17 00:00:00 2001
From: CDM15y <cdm15y@duck.com>
Date: Sat, 20 Jul 2024 09:42:55 +0100
Subject: [PATCH] [examples] Fix PBR and Shadowmap example shaders for GLSL
 1.20 (#4167)

* Update pbr.fs

remove presicion mediump float because it is for GLES, and not desktop GL

* Fix shadowmap.fs

also suffers the same problem as pbr.fs
---
 .../shaders/resources/shaders/glsl120/pbr.fs     | 16 +++++++---------
 .../resources/shaders/glsl120/shadowmap.fs       |  8 +++-----
 2 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/examples/shaders/resources/shaders/glsl120/pbr.fs b/examples/shaders/resources/shaders/glsl120/pbr.fs
index 935bced35d86..1c5eee00b355 100644
--- a/examples/shaders/resources/shaders/glsl120/pbr.fs
+++ b/examples/shaders/resources/shaders/glsl120/pbr.fs
@@ -1,7 +1,5 @@
 #version 120
 
-precision mediump float;
-
 #define MAX_LIGHTS              4
 #define LIGHT_DIRECTIONAL       0
 #define LIGHT_POINT             1
@@ -17,12 +15,12 @@ struct Light {
 };
 
 // Input vertex attributes (from vertex shader)
-varying in vec3 fragPosition;
-varying in vec2 fragTexCoord;
-varying in vec4 fragColor;
-varying in vec3 fragNormal;
-varying in vec4 shadowPos;
-varying in mat3 TBN;
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+varying vec3 fragNormal;
+varying vec4 shadowPos;
+varying mat3 TBN;
 
 
 // Input uniform values
@@ -153,4 +151,4 @@ void main()
 
         gl_FragColor = vec4(color,1.0);
         
-}
\ No newline at end of file
+}
diff --git a/examples/shaders/resources/shaders/glsl120/shadowmap.fs b/examples/shaders/resources/shaders/glsl120/shadowmap.fs
index 668fdeb4b778..f43e63823c52 100644
--- a/examples/shaders/resources/shaders/glsl120/shadowmap.fs
+++ b/examples/shaders/resources/shaders/glsl120/shadowmap.fs
@@ -1,15 +1,13 @@
 #version 120
 
-precision mediump float;
-
 // This shader is based on the basic lighting shader
 // This only supports one light, which is directional, and it (of course) supports shadows
 
 // Input vertex attributes (from vertex shader)
-varying in vec3 fragPosition;
-varying in vec2 fragTexCoord;
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
 //varying in vec4 fragColor;
-varying in vec3 fragNormal;
+varying vec3 fragNormal;
 
 // Input uniform values
 uniform sampler2D texture0;