Implementation:Google deepmind Mujoco Glad Loader
| Knowledge Sources | |
|---|---|
| Domains | OpenGL, Graphics, Rendering |
| Last Updated | 2026-02-15 04:00 GMT |
Overview
Platform-specific OpenGL function loader implementation based on the glad 0.1.34 generator, customized for MuJoCo's rendering pipeline.
Description
This file implements the OpenGL function loading mechanism that dynamically resolves OpenGL function pointers at runtime. It handles platform-specific library loading for Windows (via wgl), Linux (via dlopen/glXGetProcAddress), and macOS (via dlopen). The loader supports OpenGL 1.5 compatibility profile along with several ARB/EXT extensions including framebuffer objects, depth buffer float, clip control, seamless cube maps, vertex buffer objects, sRGB textures, and KHR debug.
Usage
Called during MuJoCo rendering context initialization to load all required OpenGL function pointers before any rendering operations can proceed. The entry point mjGladLoadGL must be called once a valid OpenGL context is current.
Code Reference
Source Location
- Repository: Google_deepmind_Mujoco
- File: src/render/glad/glad.c
- Lines: 1-1522
Key Functions
// Resolve an OpenGL function pointer by name (platform-specific)
static void* mjGlad_get_proc(const char *namez);
// Open the platform OpenGL shared library
static int mjGlad_open_gl(void);
// Close the platform OpenGL shared library
static void mjGlad_close_gl(void);
// Load all OpenGL 1.5 core and extension function pointers
int mjGladLoadGL(void);
Import
#include "render/glad/glad.h"
I/O Contract
Inputs
| Name | Type | Required | Description |
|---|---|---|---|
| (none) | - | - | Requires a valid current OpenGL context before calling mjGladLoadGL |
Outputs
| Name | Type | Description |
|---|---|---|
| return value | int | Version number on success from mjGladLoadGL, 0 on failure |
| GL function pointers | global | All OpenGL function pointers are populated as global variables (e.g., mjGlad_glCullFace, mjGlad_glClear) |