hw_render.get_proc_address() returns NULL

[deltabeard]

Description

hw_render.get_proc_address("glGetString") returns NULL instead of a function pointer. Using gdb, I've found that video_driver_poke is NULL when it probably shouldn't be.

Previous discussion is here, and the code that found this bug is here.

Expected behavior

For get_proc_address to not fail.

Actual behavior

video_driver_poke (gfx/video_driver.c:655) is NULL, causing get_proc_address to also return NULL, when using the gl video driver.

Steps to reproduce the bug

1. Initialise context type as RETRO_HW_CONTEXT_OPENGL and set hw_render.
2. Call hw_render.get_proc_address("glGetString")

Bisect Results

Since the start of time. v1.7.0, master branch and v1.3.6 all tested. Same result

Version/Commit

[INFO] === Build =======================================
Capabilities: MMX MMXEXT SSE1 SSE2 SSE3 SSSE3 SSE4 SSE4.2 AVX AES
Built: Dec 31 2017
[INFO] Version: 1.7.0
[INFO] Git: e5b346a
[INFO] =================================================

Environment information

• OS: Linux 4.14.9-1-ARCH Shaders do not build on OS X 10.6.6 #1 SMP PREEMPT Tue Dec 26 00:18:37 UTC 2017 x86_64 GNU/Linux
• Compiler: gcc version 7.2.1 20171128 (GCC)

[deltabeard]

Invalid: Not an issue with Retroarch.