st/egl: Move module loading code to targets.

Several changes are made.  libegl.a no longer defines _eglMain.  It
defines functions to create and destroy a _EGLDriver instead.  The
creation function is called by the targets.  It takes an egl_g3d_loader
as its argument.  The loader is defined by the targets and is in charge
of creating st_api and pipe_screen.  This allows us to move the module
loading code to targets.  Lastly, the modules are now loaded as the
respective contexts are created.

1 files changed, 52 insertions, 60 deletions

diff --git a/src/gallium/state_trackers/egl/common/egl_g3d.c b/src/gallium/state_trackers/egl/common/egl_g3d.c
index 36354dd42e..494d6dd8b6 100644
--- a/src/gallium/state_trackers/egl/common/egl_g3d.c
+++ b/src/gallium/state_trackers/egl/common/egl_g3d.c
@@ -35,34 +35,10 @@
 #include "egl_g3d.h"
 #include "egl_g3d_api.h"
 #include "egl_g3d_st.h"
+#include "egl_g3d_loader.h"
 #include "native.h"
 
 /**
- * Initialize the state trackers.
- */
-static void
-egl_g3d_init_st(_EGLDriver *drv)
-{
-   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
-   EGLint i;
-
-   /* already initialized */
-   if (gdrv->api_mask)
-      return;
-
-   egl_g3d_init_st_apis(gdrv->stapis);
-   for (i = 0; i < ST_API_COUNT; i++) {
-      if (gdrv->stapis[i])
-         gdrv->api_mask |= egl_g3d_st_api_bit(i);
-   }
-
-   if (gdrv->api_mask)
-      _eglLog(_EGL_DEBUG, "Driver API mask: 0x%x", gdrv->api_mask);
-   else
-      _eglLog(_EGL_WARNING, "No supported client API");
-}
-
-/**
  * Get the native platform.
  */
 static const struct native_platform *
@@ -323,7 +299,6 @@ egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
                     _EGLConfig *conf, const struct native_config *nconf,
                     enum pipe_format depth_stencil_format)
 {
-   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
    struct egl_g3d_config *gconf = egl_g3d_config(conf);
    EGLint buffer_mask, api_mask;
    EGLBoolean valid;
@@ -347,7 +322,7 @@ egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
    gconf->stvis.render_buffer = (buffer_mask & ST_ATTACHMENT_BACK_LEFT_MASK) ?
       ST_ATTACHMENT_BACK_LEFT : ST_ATTACHMENT_FRONT_LEFT;
 
-   api_mask = gdrv->api_mask;;
+   api_mask = dpy->ClientAPIsMask;
    /* this is required by EGL, not by OpenGL ES */
    if (nconf->window_bit &&
        gconf->stvis.render_buffer != ST_ATTACHMENT_BACK_LEFT)
@@ -472,8 +447,26 @@ egl_g3d_invalid_surface(struct native_display *ndpy,
       gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gsurf->stfbi);
 }
 
+static struct pipe_screen *
+egl_g3d_new_drm_screen(struct native_display *ndpy, const char *name, int fd)
+{
+   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   return gdpy->loader->create_drm_screen(name, fd);
+}
+
+static struct pipe_screen *
+egl_g3d_new_sw_screen(struct native_display *ndpy, struct sw_winsys *ws)
+{
+   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   return gdpy->loader->create_sw_screen(ws);
+}
+
 static struct native_event_handler egl_g3d_native_event_handler = {
-   egl_g3d_invalid_surface
+   egl_g3d_invalid_surface,
+   egl_g3d_new_drm_screen,
+   egl_g3d_new_sw_screen
 };
 
 static EGLBoolean
@@ -529,20 +522,25 @@ egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy,
       _eglError(EGL_BAD_ALLOC, "eglInitialize");
       goto fail;
    }
+   gdpy->loader = gdrv->loader;
    dpy->DriverData = gdpy;
 
    _eglLog(_EGL_INFO, "use %s for display %p", nplat->name, dpy->PlatformDisplay);
    gdpy->native = nplat->create_display(dpy->PlatformDisplay,
-         &egl_g3d_native_event_handler);
+         &egl_g3d_native_event_handler, (void *) dpy);
    if (!gdpy->native) {
       _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)");
       goto fail;
    }
 
-   gdpy->native->user_data = (void *) dpy;
-
-   egl_g3d_init_st(&gdrv->base);
-   dpy->ClientAPIsMask = gdrv->api_mask;
+   if (gdpy->loader->api_mask & (1 << ST_API_OPENGL))
+      dpy->ClientAPIsMask |= EGL_OPENGL_BIT;
+   if (gdpy->loader->api_mask & (1 << ST_API_OPENGL_ES1))
+      dpy->ClientAPIsMask |= EGL_OPENGL_ES_BIT;
+   if (gdpy->loader->api_mask & (1 << ST_API_OPENGL_ES2))
+      dpy->ClientAPIsMask |= EGL_OPENGL_ES2_BIT;
+   if (gdpy->loader->api_mask & (1 << ST_API_OPENVG))
+      dpy->ClientAPIsMask |= EGL_OPENVG_BIT;
 
    gdpy->smapi = egl_g3d_create_st_manager(dpy);
    if (!gdpy->smapi) {
@@ -583,22 +581,15 @@ static _EGLProc
 egl_g3d_get_proc_address(_EGLDriver *drv, const char *procname)
 {
    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
-   _EGLProc proc;
-   EGLint i;
+   struct st_api *stapi = NULL;
 
-   /* in case this is called before a display is initialized */
-   egl_g3d_init_st(&gdrv->base);
-
-   for (i = 0; i < ST_API_COUNT; i++) {
-      struct st_api *stapi = gdrv->stapis[i];
-      if (stapi) {
-         proc = (_EGLProc) stapi->get_proc_address(stapi, procname);
-         if (proc)
-            return proc;
-      }
-   }
+   if (procname && procname[0] == 'v' && procname[1] == 'g')
+      stapi = gdrv->loader->get_st_api(ST_API_OPENVG);
+   else if (procname && procname[0] == 'g' && procname[1] == 'l')
+      stapi = gdrv->loader->guess_gl_api();
 
-   return (_EGLProc) NULL;
+   return (_EGLProc) ((stapi) ?
+         stapi->get_proc_address(stapi, procname) : NULL);
 }
 
 static EGLint
@@ -628,18 +619,8 @@ egl_g3d_probe(_EGLDriver *drv, _EGLDisplay *dpy)
    return score;
 }
 
-static void
-egl_g3d_unload(_EGLDriver *drv)
-{
-   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
-
-   egl_g3d_destroy_st_apis();
-   egl_g3d_destroy_probe(drv, NULL);
-   FREE(gdrv);
-}
-
 _EGLDriver *
-_eglMain(const char *args)
+egl_g3d_create_driver(const struct egl_g3d_loader *loader)
 {
    struct egl_g3d_driver *gdrv;
 
@@ -647,17 +628,28 @@ _eglMain(const char *args)
    if (!gdrv)
       return NULL;
 
+   gdrv->loader = loader;
+
    egl_g3d_init_driver_api(&gdrv->base);
    gdrv->base.API.Initialize = egl_g3d_initialize;
    gdrv->base.API.Terminate = egl_g3d_terminate;
    gdrv->base.API.GetProcAddress = egl_g3d_get_proc_address;
 
-   gdrv->base.Name = "Gallium";
    gdrv->base.Probe = egl_g3d_probe;
-   gdrv->base.Unload = egl_g3d_unload;
 
    /* the key is " EGL G3D" */
    gdrv->probe_key = 0x0E61063D;
 
+   /* to be filled by the caller */
+   gdrv->base.Name = NULL;
+   gdrv->base.Unload = NULL;
+
    return &gdrv->base;
 }
+
+void
+egl_g3d_destroy_driver(_EGLDriver *drv)
+{
+   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
+   FREE(gdrv);
+}