Add cautions about Cg being deprecated

Author: rdb

programming/shaders/cg-shader-tutorial/index.rst

@@ -3,6 +3,10 @@
 Cg Shader Tutorial
 ==================
 
+.. caution::
+
+   Support for Cg shaders will be deprecated in an upcoming version of Panda3D.
+
 Cg Shader Tutorials
 -------------------
 

programming/shaders/cg-shader-tutorial/part-1.rst

@@ -3,6 +3,10 @@
 Cg Tutorial Part 1
 ==================
 
+.. caution::
+
+   Support for Cg shaders will be deprecated in an upcoming version of Panda3D.
+
 Cg Tutorial Part 1: The Baseline Panda App
 ------------------------------------------
 

programming/shaders/cg-shader-tutorial/part-2.rst

@@ -3,6 +3,10 @@
 Cg Tutorial Part 2
 ==================
 
+.. caution::
+
+   Support for Cg shaders will be deprecated in an upcoming version of Panda3D.
+
 Cg Tutorial Part 2: The Simplest Shader
 ---------------------------------------
 

programming/shaders/cg-shader-tutorial/part-3.rst

@@ -3,6 +3,10 @@
 Cg Tutorial Part 3
 ==================
 
+.. caution::
+
+   Support for Cg shaders will be deprecated in an upcoming version of Panda3D.
+
 Cg Tutorial Part 3: The Simplest Useful Shader
 ----------------------------------------------
 

programming/shaders/list-of-cg-inputs.rst

@@ -3,6 +3,10 @@
 List of Possible Cg Shader Inputs
 =================================
 
+.. caution::
+
+   Support for Cg shaders will be deprecated in an upcoming version of Panda3D.
+
 In many cases, it is desirable to access information from the render state or
 from the 3-D transformation of the node that is currently being rendered.
 Instead of having to pass all this information manually, it is possible to name

programming/shaders/shader-basics.rst

@@ -139,6 +139,10 @@ additional parameter, following the fragment shader.
 Cg Shaders
 ----------
 
+.. caution::
+
+   Support for Cg shaders will be deprecated in an upcoming version of Panda3D.
+
 A Cg shader must contain procedures named ``vshader()`` and ``fshader()``; the
 vertex shader and fragment shader respectively. If a geometry shader is used,
 then it must also contain a procedure named ``gshader()``.