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OPENGL: Unify shader implementation for GL and GLES2.

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This commit is contained in:
Johannes Schickel 2015-12-21 06:35:13 +01:00
parent fc52f73050
commit 8a3eecb73a
6 changed files with 59 additions and 238 deletions
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12
backends/graphics/opengl/opengl-sys.h
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@ -30,6 +30,18 @@
#include "backends/platform/sdl/sdl-sys.h"
#endif
// On OS X we only support GL contexts. The reason is that Apple's GL interface
// uses "void *" for GLhandleARB which is not type compatible with GLint. This
// kills our aliasing trick for extension functions and thus would force us to
// supply two different Shader class implementations or introduce other
// wrappers. OS X only supports GL contexts right now anyway (at least
// according to SDL2 sources), thus it is not much of an issue.
#if defined(MACOSX) && (!defined(USE_GLES_MODE) || USE_GLES_MODE != 0)
//#warning "Only forced OpenGL mode is supported on Mac OS X. Overriding settings."
#undef USE_GLES_MODE
#define USE_GLES_MODE 0
#endif
// We allow to force GL or GLES modes on compile time.
// For this the USE_GLES_MODE define is used. The following values represent
// the given selection choices: