1 files changed, 180 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/dri/common/dri_context.c b/src/gallium/state_trackers/dri/common/dri_context.c
new file mode 100644
index 00000000000..a808d2d9ddf
--- /dev/null
+++ b/src/gallium/state_trackers/dri/common/dri_context.c
@@ -0,0 +1,180 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <[email protected]>
+ * Author: Jakob Bornecrantz <[email protected]>
+ */
+
+#include "utils.h"
+
+#include "dri_screen.h"
+#include "dri_drawable.h"
+#include "dri_context.h"
+
+#include "pipe/p_context.h"
+#include "state_tracker/st_context.h"
+
+static void
+dri_init_extensions(struct dri_context *ctx)
+{
+   struct st_context *st = (struct st_context *) ctx->st;
+
+   /* New extensions should be added in mesa/state_tracker/st_extensions.c
+    * and not in this file. */
+   driInitExtensions(st->ctx, NULL, GL_FALSE);
+}
+
+GLboolean
+dri_create_context(const __GLcontextModes * visual,
+		   __DRIcontext * cPriv, void *sharedContextPrivate)
+{
+   __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;
+
+   if (sharedContextPrivate) {
+      st_share = ((struct dri_context *)sharedContextPrivate)->st;
+   }
+
+   ctx = CALLOC_STRUCT(dri_context);
+   if (ctx == NULL)
+      goto fail;
+
+   cPriv->driverPrivate = ctx;
+   ctx->cPriv = cPriv;
+   ctx->sPriv = sPriv;
+   ctx->lock = screen->drmLock;
+
+   driParseConfigFiles(&ctx->optionCache,
+		       &screen->optionCache, sPriv->myNum, "dri");
+
+   dri_fill_st_visual(&stvis, screen, visual);
+   ctx->st = stapi->create_context(stapi, &screen->base, &stvis, st_share);
+   if (ctx->st == NULL)
+      goto fail;
+   ctx->st->st_manager_private = (void *) ctx;
+
+   dri_init_extensions(ctx);
+
+   return GL_TRUE;
+
+ fail:
+   if (ctx && ctx->st)
+      ctx->st->destroy(ctx->st);
+
+   FREE(ctx);
+   return FALSE;
+}
+
+void
+dri_destroy_context(__DRIcontext * cPriv)
+{
+   struct dri_context *ctx = dri_context(cPriv);
+
+   /* note: we are freeing values and nothing more because
+    * driParseConfigFiles allocated values only - the rest
+    * is owned by screen optionCache.
+    */
+   FREE(ctx->optionCache.values);
+
+   /* No particular reason to wait for command completion before
+    * destroying a context, but it is probably worthwhile flushing it
+    * to avoid having to add code elsewhere to cope with flushing a
+    * partially destroyed context.
+    */
+   ctx->st->flush(ctx->st, 0, NULL);
+   ctx->st->destroy(ctx->st);
+
+   FREE(ctx);
+}
+
+GLboolean
+dri_unbind_context(__DRIcontext * cPriv)
+{
+   /* dri_util.c ensures cPriv is not null */
+   struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
+   struct dri_context *ctx = dri_context(cPriv);
+   struct st_api *stapi = screen->st_api;
+
+   if (--ctx->bind_count == 0) {
+      if (ctx->st == stapi->get_current(stapi)) {
+         ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+         stapi->make_current(stapi, NULL, NULL, NULL);
+      }
+   }
+
+   return GL_TRUE;
+}
+
+GLboolean
+dri_make_current(__DRIcontext * cPriv,
+		 __DRIdrawable * driDrawPriv,
+		 __DRIdrawable * driReadPriv)
+{
+   /* dri_util.c ensures cPriv is not null */
+   struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
+   struct dri_context *ctx = dri_context(cPriv);
+   struct st_api *stapi = screen->st_api;
+   struct dri_drawable *draw = dri_drawable(driDrawPriv);
+   struct dri_drawable *read = dri_drawable(driReadPriv);
+   struct st_context_iface *old_st = stapi->get_current(stapi);
+
+   if (old_st && old_st != ctx->st)
+      old_st->flush(old_st, PIPE_FLUSH_RENDER_CACHE, NULL);
+
+   ++ctx->bind_count;
+
+   if (ctx->dPriv != driDrawPriv) {
+      ctx->dPriv = driDrawPriv;
+      draw->texture_stamp = driDrawPriv->lastStamp - 1;
+   }
+   if (ctx->rPriv != driReadPriv) {
+      ctx->rPriv = driReadPriv;
+      read->texture_stamp = driReadPriv->lastStamp - 1;
+   }
+
+   stapi->make_current(stapi, ctx->st, &draw->base, &read->base);
+
+   return GL_TRUE;
+}
+
+struct dri_context *
+dri_get_current(__DRIscreen *sPriv)
+{
+   struct dri_screen *screen = dri_screen(sPriv);
+   struct st_api *stapi = screen->st_api;
+   struct st_context_iface *st;
+
+   st = stapi->get_current(stapi);
+
+   return (struct dri_context *) (st) ? st->st_manager_private : NULL;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */