From 0cbd97b7a1edd89914e85b7d2d6d520f21118faa Mon Sep 17 00:00:00 2001
From: Rod Kay <rodakay5@gmail.com>
Date: Mon, 8 May 2023 11:35:41 +1000
Subject: [PATCH] opengl.assets.shader: Add 'version.header' and
 'texturing.frag' shader snippets.

---
 3-mid/opengl/assets/shader/texturing.frag | 21 +++++++++++++++++++++
 3-mid/opengl/assets/shader/version.header |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 3-mid/opengl/assets/shader/texturing.frag
 create mode 100644 3-mid/opengl/assets/shader/version.header

diff --git a/3-mid/opengl/assets/shader/texturing.frag b/3-mid/opengl/assets/shader/texturing.frag
new file mode 100644
index 0000000..17f143d
--- /dev/null
+++ b/3-mid/opengl/assets/shader/texturing.frag
@@ -0,0 +1,21 @@
+uniform int         texture_Count;
+uniform sampler2D   Textures [32];
+uniform float       Fade     [32];
+
+vec4
+apply_Texturing (vec2   Coords)
+{
+    vec4   Color = vec4 (0);
+
+    for (int i = 0;   i < texture_Count;   ++i)
+    {
+        Color.rgb +=   texture (Textures [i], Coords).rgb
+                     * texture (Textures [i], Coords).a
+                     * (1.0 - Fade [i]);
+                                      
+        Color.a    = max (Color.a, texture (Textures [i],
+                                            Coords).a);
+    }
+    
+    return Color;
+}
\ No newline at end of file
diff --git a/3-mid/opengl/assets/shader/version.header b/3-mid/opengl/assets/shader/version.header
new file mode 100644
index 0000000..82f5a4e
--- /dev/null
+++ b/3-mid/opengl/assets/shader/version.header
@@ -0,0 +1 @@
+#version 140