egl: Migrate drivers to use _eglBindContext.

_eglMakeCurrent is a big hammer that is not easy to use.  Migrate
drivers to use _eglBindContext and un-export _eglMakeCurrent.

src/egl/drivers/glx/egl_glx.c

@@ -660,8 +660,10 @@ GLX_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
    struct GLX_egl_context *GLX_ctx = GLX_egl_context(ctx);
    GLXDrawable ddraw, rdraw;
    GLXContext cctx;
+   EGLBoolean ret = EGL_FALSE;
 
-   if (!_eglMakeCurrent(drv, disp, dsurf, rsurf, ctx))
+   /* bind the new context and return the "orphaned" one */
+   if (!_eglBindContext(&ctx, &dsurf, &rsurf))
       return EGL_FALSE;
 
    ddraw = (GLX_dsurf) ? GLX_dsurf->glx_drawable : None;
@@ -669,11 +671,21 @@ GLX_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
    cctx = (GLX_ctx) ? GLX_ctx->context : NULL;
 
    if (GLX_dpy->have_make_current_read)
-      return glXMakeContextCurrent(GLX_dpy->dpy, ddraw, rdraw, cctx);
+      ret = glXMakeContextCurrent(GLX_dpy->dpy, ddraw, rdraw, cctx);
    else if (ddraw == rdraw)
-      return glXMakeCurrent(GLX_dpy->dpy, ddraw, cctx);
+      ret = glXMakeCurrent(GLX_dpy->dpy, ddraw, cctx);
 
-   return EGL_FALSE;
+   if (ret) {
+      if (dsurf && !_eglIsSurfaceLinked(dsurf))
+         destroy_surface(disp, dsurf);
+      if (rsurf && rsurf != dsurf && !_eglIsSurfaceLinked(rsurf))
+         destroy_surface(disp, rsurf);
+   }
+   else {
+      _eglBindContext(&ctx, &dsurf, &rsurf);
+   }
+
+   return ret;
 }
 
 /** Get size of given window */

src/egl/drivers/xdri/egl_xdri.c

@@ -475,17 +475,13 @@ xdri_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *d,
    struct xdri_egl_context *xdri_ctx = lookup_context(context);
    struct xdri_egl_surface *draw = lookup_surface(d);
    struct xdri_egl_surface *read = lookup_surface(r);
-   _EGLContext *old = _eglGetCurrentContext();
 
-   /* an unlinked context will be invalid after context switch */
-   if (!_eglIsContextLinked(old))
-      old = NULL;
-
-   if (!_eglMakeCurrent(drv, dpy, d, r, context))
+   /* bind the new context and return the "orphaned" one */
+   if (!_eglBindContext(&context, &d, &r))
       return EGL_FALSE;
 
    /* flush before context switch */
-   if (old && old != context && xdri_driver->FlushCurrentContext)
+   if (context && xdri_driver->FlushCurrentContext)
       xdri_driver->FlushCurrentContext();
 
    /* the symbol is defined in libGL.so */
@@ -498,11 +494,18 @@ xdri_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *d,
          return EGL_FALSE;
       }
    }
-   else if (old) {
-      xdri_ctx = lookup_context(old);
+   else if (context) {
+      xdri_ctx = lookup_context(context);
       xdri_ctx->driContext->unbindContext(xdri_ctx->driContext);
    }
 
+   if (context && !_eglIsContextLinked(context))
+      destroy_context(dpy, context);
+   if (d && !_eglIsSurfaceLinked(d))
+      destroy_surface(dpy, d);
+   if (r && r != d && !_eglIsSurfaceLinked(r))
+      destroy_surface(dpy, r);
+
    return EGL_TRUE;
 }
 

src/egl/main/eglcontext.c

@@ -310,32 +310,13 @@ _eglBindContext(_EGLContext **ctx, _EGLSurface **draw, _EGLSurface **read)
 
 
 /**
- * Drivers will typically call this to do the error checking and
- * update the various flags.
- * Then, the driver will do its device-dependent Make-Current stuff.
+ * Just a placeholder/demo function.  Drivers should override this.
  */
 EGLBoolean
 _eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw,
                 _EGLSurface *read, _EGLContext *ctx)
 {
-   if (!_eglBindContext(&ctx, &draw, &read))
-      return EGL_FALSE;
-
-   /* nothing we can do if the display is uninitialized */
-   if (dpy->Initialized) {
-      /* avoid double destroy */
-      if (read && read == draw)
-         read = NULL;
-
-      if (ctx && !_eglIsContextLinked(ctx))
-         drv->API.DestroyContext(drv, dpy, ctx);
-      if (draw && !_eglIsSurfaceLinked(draw))
-         drv->API.DestroySurface(drv, dpy, draw);
-      if (read && !_eglIsSurfaceLinked(read))
-         drv->API.DestroySurface(drv, dpy, read);
-   }
-
-   return EGL_TRUE;
+   return EGL_FALSE;
 }
 
 

src/egl/main/eglcontext.h

@@ -51,7 +51,7 @@ PUBLIC EGLBoolean
 _eglBindContext(_EGLContext **ctx, _EGLSurface **draw, _EGLSurface **read);
 
 
-PUBLIC EGLBoolean
+extern EGLBoolean
 _eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx);
 
 

src/gallium/state_trackers/egl/common/egl_g3d.c

@@ -856,18 +856,14 @@ egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
                      _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx)
 {
    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
+   struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
    struct egl_g3d_context *old_gctx;
-   EGLint api;
    EGLBoolean ok = EGL_TRUE;
 
-   /* find the old context */
-   api = (gctx) ? gctx->base.ClientAPI : eglQueryAPI();
-   old_gctx = egl_g3d_get_current_context(api);
-   if (old_gctx && !_eglIsContextLinked(&old_gctx->base))
-         old_gctx = NULL;
-
-   if (!_eglMakeCurrent(drv, dpy, draw, read, ctx))
+   /* bind the new context and return the "orphaned" one */
+   if (!_eglBindContext(&ctx, &draw, &read))
       return EGL_FALSE;
+   old_gctx = egl_g3d_context(ctx);
 
    if (old_gctx) {
       /* flush old context */
@@ -883,8 +879,6 @@ egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
    }
 
    if (gctx) {
-      struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
-
       ok = egl_g3d_realloc_context(dpy, &gctx->base);
       if (ok) {
          ok = gctx->stapi->st_make_current(gctx->st_ctx,
@@ -904,6 +898,13 @@ egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
       old_gctx->base.WindowRenderBuffer = EGL_NONE;
    }
 
+   if (ctx && !_eglIsContextLinked(ctx))
+      destroy_context(dpy, ctx);
+   if (draw && !_eglIsSurfaceLinked(draw))
+      destroy_surface(dpy, draw);
+   if (read && read != draw && !_eglIsSurfaceLinked(read))
+      destroy_surface(dpy, read);
+
    return ok;
 }