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authorBrian Paul <brian.paul@tungstengraphics.com>2008-06-19 16:12:17 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-06-19 16:26:21 -0600
commit064001dbe7fd6cbb6bd5c91bdf7f0831b9c351a9 (patch)
tree1709ef7afbfc4081f8f1a1f247da436d34770ba6 /src
parenta8533d54930f8fa989036c197ad20b0778ec0cac (diff)
egl: use dlsym() to try to identify APIs
Diffstat (limited to 'src')
-rw-r--r--src/gallium/winsys/egl_xlib/egl_xlib.c47
1 files changed, 45 insertions, 2 deletions
diff --git a/src/gallium/winsys/egl_xlib/egl_xlib.c b/src/gallium/winsys/egl_xlib/egl_xlib.c
index 194bf2842a..85fc83a4dc 100644
--- a/src/gallium/winsys/egl_xlib/egl_xlib.c
+++ b/src/gallium/winsys/egl_xlib/egl_xlib.c
@@ -32,6 +32,7 @@
*/
+#include <dlfcn.h>
#include <X11/Xutil.h>
#include "pipe/p_compiler.h"
@@ -202,7 +203,6 @@ xlib_eglInitialize(_EGLDriver *drv, EGLDisplay dpy,
static EGLBoolean
xlib_eglTerminate(_EGLDriver *drv, EGLDisplay dpy)
{
-
return EGL_TRUE;
}
@@ -342,6 +342,10 @@ xlib_eglCreateContext(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
/* API-dependent context creation */
switch (ctx->Base.ClientAPI) {
+ case EGL_OPENGL_ES_API:
+ _eglLog(_EGL_DEBUG, "Create Context for ES version %d\n",
+ ctx->Base.ClientVersion);
+ /* fall-through */
case EGL_OPENGL_API:
/* create a softpipe context */
ctx->pipe = softpipe_create(xdrv->screen, xdrv->winsys, NULL);
@@ -372,6 +376,8 @@ xlib_eglDestroyContext(_EGLDriver *drv, EGLDisplay dpy, EGLContext ctx)
else {
/* API-dependent clean-up */
switch (context->Base.ClientAPI) {
+ case EGL_OPENGL_ES_API:
+ /* fall-through */
case EGL_OPENGL_API:
st_destroy_context(context->Context);
break;
@@ -555,6 +561,36 @@ xlib_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
/**
+ * Determine which API(s) is(are) present by looking for some specific
+ * global symbols.
+ */
+static EGLint
+find_supported_apis(void)
+{
+ EGLint mask = 0;
+ void *handle;
+
+ handle = dlopen(NULL, 0);
+
+ if (dlsym(handle, "st_api_OpenGL_ES1"))
+ mask |= EGL_OPENGL_ES_BIT;
+
+ if (dlsym(handle, "st_api_OpenGL_ES2"))
+ mask |= EGL_OPENGL_ES2_BIT;
+
+ if (dlsym(handle, "st_api_OpenGL"))
+ mask |= EGL_OPENGL_BIT;
+
+ if (dlsym(handle, "st_api_OpenVG"))
+ mask |= EGL_OPENVG_BIT;
+
+ dlclose(handle);
+
+ return mask;
+}
+
+
+/**
* This is the main entrypoint into the driver.
* Called by libEGL to instantiate an _EGLDriver object.
*/
@@ -584,7 +620,14 @@ _eglMain(_EGLDisplay *dpy, const char *args)
xdrv->Base.API.MakeCurrent = xlib_eglMakeCurrent;
xdrv->Base.API.SwapBuffers = xlib_eglSwapBuffers;
- xdrv->Base.ClientAPIsMask = EGL_OPENGL_BIT /*| EGL_OPENGL_ES_BIT*/;
+ xdrv->Base.ClientAPIsMask = find_supported_apis();
+ if (xdrv->Base.ClientAPIsMask == 0x0) {
+ /* the app isn't directly linked with any EGL-supprted APIs
+ * (such as libGLESv2.so) so use an EGL utility to see what
+ * APIs might be loaded dynamically on this system.
+ */
+ xdrv->Base.ClientAPIsMask = _eglFindAPIs();
+ }
xdrv->Base.Name = "Xlib/softpipe";