third_party
/
libepoxy
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix support of some OpenGL ES and EGL implementations, specifically on Windows.

Browse Source
macos/v1.5.9
Yaron Cohen-Tal 10 years ago
parent b527c5f01f
commit 4c4a6e49ca
1 changed files with 40 additions and 86 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 126
      src/dispatch_common.c

126
src/dispatch_common.c
Unescape View File

@ -114,6 +114,10 @@
#define EGL_LIB "libEGL.so"
#define GLES1_LIB "libGLESv1_CM.so"
#define GLES2_LIB "libGLESv2.so"
#elif defined _WIN32
#define EGL_LIB "libEGL.dll"
#define GLES1_LIB "libGLES_CM.dll"
#define GLES2_LIB "libGLESv2.dll"
#else
#define EGL_LIB "libEGL.so.1"
#define GLES1_LIB "libGLESv1_CM.so.1"
@ -192,7 +196,7 @@ static struct api api = {
static bool library_initialized;
static bool epoxy_current_context_is_glx(void);
static bool epoxy_current_context_is_egl(void);
#if PLATFORM_HAS_EGL
static EGLenum
@ -279,7 +283,7 @@ epoxy_is_desktop_gl(void)
* OpenGL ES, we must also check the context type through EGL (we
* can do that as PowerVR is only usable through EGL).
*/
if (!epoxy_current_context_is_glx()) {
if (epoxy_current_context_is_egl()) {
switch (epoxy_egl_get_current_gl_context_api()) {
case EGL_OPENGL_API: return true;
case EGL_OPENGL_ES_API: return false;
@ -389,59 +393,18 @@ epoxy_internal_has_gl_extension(const char *ext, bool invalid_op_mode)
}
/**
* Tests whether the currently bound context is EGL or GLX, trying to
* avoid loading libraries unless necessary.
* Tests whether the currently bound context is EGL or other (GLX, WGL, etc.).
*/
static bool
epoxy_current_context_is_glx(void)
epoxy_current_context_is_egl(void)
{
#if !PLATFORM_HAS_GLX
return false;
#else
/* If the application hasn't explicitly called some of our GLX
* or EGL code but has presumably set up a context on its own,
* then we need to figure out how to getprocaddress anyway.
*
* If there's a public GetProcAddress loaded in the
* application's namespace, then use that.
*/
void *sym;
sym = dlsym(NULL, "glXGetCurrentContext");
if (sym) {
if (glXGetCurrentContext())
return true;
} else {
(void)dlerror();
}
#if PLATFORM_HAS_EGL
sym = dlsym(NULL, "eglGetCurrentContext");
if (sym) {
if (epoxy_egl_get_current_gl_context_api() != EGL_NONE)
return false;
} else {
(void)dlerror();
}
#endif /* PLATFORM_HAS_EGL */
/* OK, couldn't find anything in the app's address space.
* Presumably they dlopened with RTLD_LOCAL, which hides it
* from us. Just go dlopen()ing likely libraries and try them.
*/
sym = do_dlsym(&api.glx_handle, GLX_LIB, "glXGetCurrentContext", false);
if (sym && glXGetCurrentContext())
if ( get_dlopen_handle (&api.egl_handle, EGL_LIB, false)
&& epoxy_egl_get_current_gl_context_api() != EGL_NONE)
return true;
#if PLATFORM_HAS_EGL
sym = do_dlsym(&api.egl_handle, EGL_LIB, "eglGetCurrentContext",
false);
if (sym && epoxy_egl_get_current_gl_context_api() != EGL_NONE)
return false;
#endif /* PLATFORM_HAS_EGL */
#endif
return false;
#endif /* PLATFORM_HAS_GLX */
}
/**
@ -497,7 +460,7 @@ epoxy_gl_dlsym(const char *name)
void *
epoxy_gles1_dlsym(const char *name)
{
if (epoxy_current_context_is_glx()) {
if (!epoxy_current_context_is_egl()) {
return epoxy_get_proc_address(name);
} else {
return do_dlsym(&api.gles1_handle, GLES1_LIB, name, true);
@ -507,7 +470,7 @@ epoxy_gles1_dlsym(const char *name)
void *
epoxy_gles2_dlsym(const char *name)
{
if (epoxy_current_context_is_glx()) {
if (!epoxy_current_context_is_egl()) {
return epoxy_get_proc_address(name);
} else {
return do_dlsym(&api.gles2_handle, GLES2_LIB, name, true);
@ -527,7 +490,7 @@ epoxy_gles2_dlsym(const char *name)
void *
epoxy_gles3_dlsym(const char *name)
{
if (epoxy_current_context_is_glx()) {
if (!epoxy_current_context_is_egl()) {
return epoxy_get_proc_address(name);
} else {
void *func = do_dlsym(&api.gles2_handle, GLES2_LIB, name, false);
@ -610,14 +573,6 @@ epoxy_egl_get_current_gl_context_api(void)
void *
epoxy_get_bootstrap_proc_address(const char *name)
{
/* If we already have a library that links to libglapi loaded,
* use that.
*/
#if PLATFORM_HAS_GLX
if (api.glx_handle && glXGetCurrentContext())
return epoxy_gl_dlsym(name);
#endif
/* If epoxy hasn't loaded any API-specific library yet, try to
* figure out what API the context is using and use that library,
* since future calls will also use that API (this prevents a
@ -629,21 +584,30 @@ epoxy_get_bootstrap_proc_address(const char *name)
switch (epoxy_egl_get_current_gl_context_api()) {
case EGL_OPENGL_API:
return epoxy_gl_dlsym(name);
case EGL_OPENGL_ES_API:
/* We can't resolve the GL version, because
* epoxy_glGetString() is one of the two things calling
* us. Try the GLES2 implementation first, and fall back
* to GLES1 otherwise.
*/
get_dlopen_handle(&api.gles2_handle, GLES2_LIB, false);
if (api.gles2_handle)
return epoxy_gles2_dlsym(name);
case EGL_OPENGL_ES_API: {
EGLDisplay eglDisplay = eglGetCurrentDisplay();
EGLContext eglContext = eglGetCurrentContext();
EGLint glesVer = -1;
if ( eglDisplay != EGL_NO_DISPLAY
&& eglContext != EGL_NO_CONTEXT
&& eglQueryContext(eglDisplay, eglContext,
EGL_CONTEXT_CLIENT_VERSION, &glesVer) == EGL_TRUE)
return glesVer >= 2 ? epoxy_gles2_dlsym(name) : epoxy_gles1_dlsym(name);
else
return epoxy_gles1_dlsym(name);
return NULL;
}
}
}
#endif /* PLATFORM_HAS_EGL */
/* If we already have a library that links to libglapi loaded,
* use that.
*/
#if PLATFORM_HAS_GLX
if (api.glx_handle && glXGetCurrentContext())
return epoxy_gl_dlsym(name);
#endif
/* Fall back to GLX */
return epoxy_gl_dlsym(name);
}
@ -651,27 +615,17 @@ epoxy_get_bootstrap_proc_address(const char *name)
void *
epoxy_get_proc_address(const char *name)
{
#if PLATFORM_HAS_EGL
if (epoxy_current_context_is_egl())
return eglGetProcAddress(name);
#endif
#ifdef _WIN32
return wglGetProcAddress(name);
void *func = wglGetProcAddress(name);
return func ? func : epoxy_gl_dlsym(name);
#elif defined(__APPLE__)
return epoxy_gl_dlsym(name);
#else
if (epoxy_current_context_is_glx()) {
return glXGetProcAddressARB((const GLubyte *)name);
} else {
#if PLATFORM_HAS_EGL
GLenum egl_api = epoxy_egl_get_current_gl_context_api();
switch (egl_api) {
case EGL_OPENGL_API:
case EGL_OPENGL_ES_API:
return eglGetProcAddress(name);
case EGL_NONE:
break;
}
#endif
}
errx(1, "Couldn't find current GLX or EGL context.\n");
return glXGetProcAddressARB((const GLubyte *)name);
#endif
}

Write Preview
Loading…
Cancel
Save