Merge remote-tracking branch 'refs/remotes/raysan5/develop' into develop

1 files changed, 25 insertions, 9 deletions

diff --git a/src/rlgl.h b/src/rlgl.h
index 9be73f36..7d328a52 100644
--- a/src/rlgl.h
+++ b/src/rlgl.h
@@ -2,11 +2,27 @@
 *
 *   rlgl - raylib OpenGL abstraction layer
 *
-*   raylib now uses OpenGL 1.1 style functions (rlVertex) that are mapped to selected OpenGL version:
-*       OpenGL 1.1  - Direct map rl* -> gl*
-*       OpenGL 2.1  - Vertex data is stored in VBOs, call rlglDraw() to render
-*       OpenGL 3.3  - Vertex data is stored in VAOs, call rlglDraw() to render
-*       OpenGL ES 2 - Vertex data is stored in VBOs or VAOs (when available), call rlglDraw() to render
+*   rlgl allows usage of OpenGL 1.1 style functions (rlVertex) that are internally mapped to 
+*   selected OpenGL version (1.1, 2.1, 3.3 Core, ES 2.0). 
+*
+*   When chosing an OpenGL version greater than OpenGL 1.1, rlgl stores vertex data on internal 
+*   VBO buffers (and VAOs if available). It requires calling 3 functions:
+*       rlglInit()  - Initialize internal buffers and auxiliar resources
+*       rlglDraw()  - Process internal buffers and send required draw calls
+*       rlglClose() - De-initialize internal buffers data and other auxiliar resources
+*
+*   External libs:
+*       raymath     - 3D math functionality (Vector3, Matrix, Quaternion)
+*       GLAD        - OpenGL extensions loading (OpenGL 3.3 Core only)
+*
+*   Module Configuration Flags:
+*       GRAPHICS_API_OPENGL_11  - Use OpenGL 1.1 backend
+*       GRAPHICS_API_OPENGL_21  - Use OpenGL 2.1 backend
+*       GRAPHICS_API_OPENGL_33  - Use OpenGL 3.3 Core profile backend
+*       GRAPHICS_API_OPENGL_ES2 - Use OpenGL ES 2.0 backend
+*
+*       RLGL_STANDALONE             - Use rlgl as standalone library (no raylib dependency)
+*
 *
 *   Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
 *
@@ -117,15 +133,14 @@ typedef enum { RL_PROJECTION, RL_MODELVIEW, RL_TEXTURE } MatrixMode;
 
 typedef enum { RL_LINES, RL_TRIANGLES, RL_QUADS } DrawMode;
 
+typedef unsigned char byte;
+
 #if defined(RLGL_STANDALONE)
     #ifndef __cplusplus
     // Boolean type
     typedef enum { false, true } bool;
     #endif
 
-    // byte type
-    typedef unsigned char byte;
-
     // Color type, RGBA (32bit)
     typedef struct Color {
         unsigned char r;
@@ -408,7 +423,8 @@ float *MatrixToFloat(Matrix mat);
 
 void InitVrDevice(int vrDevice);            // Init VR device
 void CloseVrDevice(void);                   // Close VR device
-bool IsVrDeviceReady(void);                 // Detect if VR device (or simulator) is ready
+bool IsVrDeviceReady(void);                 // Detect if VR device is ready
+bool IsVrSimulator(void);                   // Detect if VR simulator is running
 void UpdateVrTracking(Camera *camera);      // Update VR tracking (position and orientation) and camera
 void ToggleVrMode(void);                    // Enable/Disable VR experience (device or simulator)