Check required extensions at start.

[movit] / init.h

diff --git a/init.h b/init.h
index e0dbe63688fff77225e45e4a162b2ad7cf1003df..a1e71dd54053b3f168f3c47267eba1512bd2096b 100644 (file)
--- a/init.h
+++ b/init.h
@@ -2,8 +2,8 @@
 #define _INIT_H
 
 // Initialize the library; in particular, will query the GPU for information
 #define _INIT_H
 
 // Initialize the library; in particular, will query the GPU for information

-// that is needed by various components. (In time, for instance, we will query
-// about extensions here.)
+// that is needed by various components. For instance, it verifies that
+// we have all the OpenGL extensions we need.

 void init_movit();
 
 // GPU features. These are not intended for end-user use.
 void init_movit();
 
 // GPU features. These are not intended for end-user use.


@@ -18,4 +18,7 @@ extern bool movit_initialized;
 // We currently don't bother to test above 2^10.
 extern float movit_texel_subpixel_precision;
 
 // We currently don't bother to test above 2^10.
 extern float movit_texel_subpixel_precision;
 

+// Whether the GPU in use supports GL_EXT_texture_sRGB.
+extern bool movit_srgb_textures_supported;
+

 #endif  // !defined(_INIT_H)
 #endif  // !defined(_INIT_H)