Add GLEW 1.10.0 emulation

Includes library_glew.js that stubs the init functions, but also provides the
other functions.

GL/glew.h is now changed to work with GLEW_EXT_foo_bar constants,
some missing constants that are in GLEW 1.10.0 are also provided.

Otherwise it still uses SDL_opengl.h to provide function definitions and
other constants.

Linaro's GLEW (glew-oes) is also supported to some degree to make it
easier to get ES1 and ES2 software using it running.

What it lacks:
- Some constants and function declarations that are in GLEW 1.10.0
might be missing.
- The real glew-es fork also includes normal GL constants and
function pointers, this does not.

Tests ran:
- tests/runner.py browser

Real world example using this code (and upcomming glfw3 port) can be found here:
http://cloudef.eu/glhck
http://cloudef.eu/glhck/qb.html

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/test_browser.py b/tests/test_browser.py
index c2eaabb6..23022604 100644
--- a/tests/test_browser.py
+++ b/tests/test_browser.py
@@ -1746,4 +1746,8 @@ keydown(100);keyup(100); // trigger the end
     # Now run test in browser
     self.btest(path_from_root('tests', 'uuid', 'test.c'), '1')
 
-
+  def test_glew(self):
+    self.btest(path_from_root('tests', 'glew.c'), expected='1')
+    self.btest(path_from_root('tests', 'glew.c'), args=['-s', 'LEGACY_GL_EMULATION=1'], expected='1')
+    self.btest(path_from_root('tests', 'glew.c'), args=['-DGLEW_MX'], expected='1')
+    self.btest(path_from_root('tests', 'glew.c'), args=['-s', 'LEGACY_GL_EMULATION=1', '-DGLEW_MX'], expected='1')