1 files changed, 20 insertions, 0 deletions
diff --git a/src/libjin/graphics/shaders/je_jsl_compiler.cpp b/src/libjin/graphics/shaders/je_jsl_compiler.cpp
index 74613ad..d081c51 100644
--- a/src/libjin/graphics/shaders/je_jsl_compiler.cpp
+++ b/src/libjin/graphics/shaders/je_jsl_compiler.cpp
@@ -16,6 +16,26 @@ namespace JinEngine
         namespace Shaders
         {
 
+            ///
+            /// Built-in variables in vertex shader:
+            ///     jin_ProjectionMatrix --+
+            ///     jin_ModelViewMatrix    |- Uniforms
+            ///     jin_MainTexture      --+
+            ///     jin_VertexCoords     --+
+            ///     jin_TextureCoords      |- Attributes
+            ///     jin_VertexColor      --+
+            ///     jin_Color               - GLSL built in
+            ///
+            /// Built-in variables in fragment shader:
+            ///     jin_ProjectionMatrix --+
+            ///     jin_ModelViewMatrix    |- Uniforms
+            ///     jin_MainTexture      --+
+            ///     jin_Color            --+
+            ///     jin_XY                 |- Inputs
+            ///     jin_UV                 |
+            ///     jin_COLOR            --+
+            ///
+
             JinEngine::String SHADER_PROJECTION_MATRIX = "jin_ProjectionMatrix";
             JinEngine::String SHADER_MODELVIEW_MATRIX = "jin_ModelViewMatrix";
             JinEngine::String SHADER_MAIN_TEXTURE = "jin_MainTexture";