st/dri: Make st_manager the base for dri_screen

src/gallium/state_trackers/dri/common/dri_context.c

@@ -53,9 +53,9 @@ GLboolean
 dri_create_context(const __GLcontextModes * visual,
 		   __DRIcontext * cPriv, void *sharedContextPrivate)
 {
-   struct st_api *stapi = dri_get_st_api();
    __DRIscreen *sPriv = cPriv->driScreenPriv;
    struct dri_screen *screen = dri_screen(sPriv);
+   struct st_api *stapi = screen->st_api;
    struct dri_context *ctx = NULL;
    struct st_context_iface *st_share = NULL;
    struct st_visual stvis;
@@ -77,7 +77,7 @@ dri_create_context(const __GLcontextModes * visual,
 		       &screen->optionCache, sPriv->myNum, "dri");
 
    dri_fill_st_visual(&stvis, screen, visual);
-   ctx->st = stapi->create_context(stapi, screen->smapi, &stvis, st_share);
+   ctx->st = stapi->create_context(stapi, &screen->base, &stvis, st_share);
    if (ctx->st == NULL)
       goto fail;
    ctx->st->st_manager_private = (void *) ctx;
@@ -119,7 +119,8 @@ dri_destroy_context(__DRIcontext * cPriv)
 GLboolean
 dri_unbind_context(__DRIcontext * cPriv)
 {
-   struct st_api *stapi = dri_get_st_api();
+   struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
+   struct st_api *stapi = screen->st_api;
 
    if (cPriv) {
       struct dri_context *ctx = dri_context(cPriv);
@@ -140,7 +141,8 @@ dri_make_current(__DRIcontext * cPriv,
 		 __DRIdrawable * driDrawPriv,
 		 __DRIdrawable * driReadPriv)
 {
-   struct st_api *stapi = dri_get_st_api();
+   struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
+   struct st_api *stapi = screen->st_api;
 
    if (cPriv) {
       struct dri_context *ctx = dri_context(cPriv);
@@ -173,9 +175,10 @@ dri_make_current(__DRIcontext * cPriv,
 }
 
 struct dri_context *
-dri_get_current(void)
+dri_get_current(__DRIscreen *sPriv)
 {
-   struct st_api *stapi = dri_get_st_api();
+   struct dri_screen *screen = dri_screen(sPriv);
+   struct st_api *stapi = screen->st_api;
    struct st_context_iface *st;
 
    st = stapi->get_current(stapi);

src/gallium/state_trackers/dri/common/dri_context.h

@@ -80,7 +80,7 @@ dri_make_current(__DRIcontext * driContextPriv,
 		 __DRIdrawable * driReadPriv);
 
 struct dri_context *
-dri_get_current(void);
+dri_get_current(__DRIscreen * driScreenPriv);
 
 boolean
 dri_create_context(const __GLcontextModes * visual,

src/gallium/state_trackers/dri/common/dri_screen.c

@@ -304,9 +304,6 @@ dri_destroy_screen_helper(struct dri_screen * screen)
 {
    dri1_destroy_pipe_context(screen);
 
-   if (screen->smapi)
-      dri_destroy_st_manager(screen->smapi);
-
    if (screen->pipe_screen)
       screen->pipe_screen->destroy(screen->pipe_screen);
 
@@ -336,8 +333,7 @@ dri_init_screen_helper(struct dri_screen *screen,
       return NULL;
    }
 
-   screen->smapi = dri_create_st_manager(screen);
+   if (!dri_init_st_manager(screen))
-   if (!screen->smapi)
       return NULL;
 
    driParseOptionInfo(&screen->optionCache,

src/gallium/state_trackers/dri/common/dri_screen.h

@@ -46,6 +46,10 @@ struct dri_drawable;
 
 struct dri_screen
 {
+   /* st_api */
+   struct st_manager base;
+   struct st_api *st_api;
+
    /* dri */
    __DRIscreen *sPriv;
 
@@ -75,8 +79,6 @@ struct dri_screen
    boolean sd_depth_bits_last;
    boolean auto_fake_front;
 
-   struct st_manager *smapi;
-
    /* used only by DRI1 */
    struct pipe_context *dri1_pipe;
 };

src/gallium/state_trackers/dri/common/dri_st_api.c

@@ -170,39 +170,6 @@ dri_st_framebuffer_validate_att(struct st_framebuffer_iface *stfbi,
    stfbi->validate(stfbi, statts, count, NULL);
 }
 
-/**
- * Reference counted st_api.
- */
-static struct {
-   int32_t refcnt;
-   struct st_api *stapi;
-} dri_st_api;
-
-/**
- * Add a reference to the st_api of the state tracker.
- */
-static void
-_dri_get_st_api(void)
-{
-   p_atomic_inc(&dri_st_api.refcnt);
-   if (p_atomic_read(&dri_st_api.refcnt) == 1)
-      dri_st_api.stapi = st_gl_api_create();
-}
-
-/**
- * Remove a reference to the st_api of the state tracker.
- */
-static void
-_dri_put_st_api(void)
-{
-   struct st_api *stapi = dri_st_api.stapi;
-
-   if (p_atomic_dec_zero(&dri_st_api.refcnt)) {
-      stapi->destroy(dri_st_api.stapi);
-      dri_st_api.stapi = NULL;
-   }
-}
-
 static boolean
 dri_st_manager_get_egl_image(struct st_manager *smapi,
                              struct st_egl_image *stimg)
@@ -231,37 +198,22 @@ dri_st_manager_get_egl_image(struct st_manager *smapi,
 /**
  * Create a state tracker manager from the given screen.
  */
-struct st_manager *
+boolean
-dri_create_st_manager(struct dri_screen *screen)
+dri_init_st_manager(struct dri_screen *screen)
 {
-   struct st_manager *smapi;
+   screen->base.screen = screen->pipe_screen;
+   screen->base.get_egl_image = dri_st_manager_get_egl_image;
+   screen->st_api = st_gl_api_create();
 
-   smapi = CALLOC_STRUCT(st_manager);
+   if (!screen->st_api)
-   if (smapi) {
+      return FALSE;
-      smapi->screen = screen->pipe_screen;
-      smapi->get_egl_image = dri_st_manager_get_egl_image;
-      _dri_get_st_api();
-   }
 
-   return smapi;
+   return TRUE;
 }
 
-/**
- * Destroy a state tracker manager.
- */
 void
-dri_destroy_st_manager(struct st_manager *smapi)
+dri_close_st_manager(struct dri_screen *screen)
 {
-   _dri_put_st_api();
+   if (screen->st_api && screen->st_api->destroy)
-   FREE(smapi);
+      screen->st_api->destroy(screen->st_api);
-}
-
-/**
- * Return the st_api of OpenGL state tracker.
- */
-struct st_api *
-dri_get_st_api(void)
-{
-   assert(dri_st_api.stapi);
-   return dri_st_api.stapi;
 }

src/gallium/state_trackers/dri/common/dri_st_api.h

@@ -43,14 +43,11 @@ struct __DRIimageRec {
    void *loader_private;
 };
 
-struct st_api *
+boolean
-dri_get_st_api(void);
+dri_init_st_manager(struct dri_screen *screen);
-
-struct st_manager *
-dri_create_st_manager(struct dri_screen *screen);
 
 void
-dri_destroy_st_manager(struct st_manager *smapi);
+dri_close_st_manager(struct dri_screen *screen);
 
 struct st_framebuffer_iface *
 dri_create_st_framebuffer(struct dri_drawable *drawable);

src/gallium/state_trackers/dri/drm/dri1.c

@@ -257,7 +257,7 @@ static void
 dri1_flush_frontbuffer(struct dri_drawable *draw,
                        enum st_attachment_type statt)
 {
-   struct dri_context *ctx = dri_get_current();
+   struct dri_context *ctx = dri_get_current(draw->sPriv);
    struct dri_screen *screen = dri_screen(draw->sPriv);
    struct pipe_screen *pipe_screen = screen->pipe_screen;
    struct pipe_fence_handle *dummy_fence;
@@ -280,8 +280,8 @@ dri1_flush_frontbuffer(struct dri_drawable *draw,
 void
 dri1_swap_buffers(__DRIdrawable * dPriv)
 {
-   struct dri_context *ctx = dri_get_current();
    struct dri_drawable *draw = dri_drawable(dPriv);
+   struct dri_context *ctx = dri_get_current(draw->sPriv);
    struct dri_screen *screen = dri_screen(draw->sPriv);
    struct pipe_screen *pipe_screen = screen->pipe_screen;
    struct pipe_fence_handle *fence;
@@ -309,7 +309,7 @@ dri1_swap_buffers(__DRIdrawable * dPriv)
 void
 dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 {
-   struct dri_context *ctx = dri_get_current();
+   struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
    struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
    struct pipe_screen *pipe_screen = screen->pipe_screen;
    struct drm_clip_rect sub_bbox;

src/gallium/state_trackers/dri/sw/drisw.c

@@ -105,7 +105,7 @@ drisw_present_texture(__DRIdrawable *dPriv,
 static INLINE void
 drisw_invalidate_drawable(__DRIdrawable *dPriv)
 {
-   struct dri_context *ctx = dri_get_current();
+   struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
    struct dri_drawable *drawable = dri_drawable(dPriv);
 
    drawable->texture_stamp = dPriv->lastStamp - 1;
@@ -131,7 +131,7 @@ drisw_copy_to_front(__DRIdrawable * dPriv,
 void
 drisw_swap_buffers(__DRIdrawable *dPriv)
 {
-   struct dri_context *ctx = dri_get_current();
+   struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
    struct dri_drawable *drawable = dri_drawable(dPriv);
    struct pipe_resource *ptex;
 
@@ -151,7 +151,7 @@ static void
 drisw_flush_frontbuffer(struct dri_drawable *drawable,
                         enum st_attachment_type statt)
 {
-   struct dri_context *ctx = dri_get_current();
+   struct dri_context *ctx = dri_get_current(drawable->sPriv);
    struct pipe_resource *ptex;
 
    if (!ctx)