1 files changed, 171 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_queryobj.c b/src/mesa/state_tracker/st_cb_queryobj.c
new file mode 100644
index 00000000000..21c2c7dd9ff
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_queryobj.c
@@ -0,0 +1,171 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+
+/**
+ * glBegin/EndQuery interface to pipe
+ *
+ * \author Brian Paul
+ */
+
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/image.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "st_context.h"
+#include "st_cb_queryobj.h"
+#include "st_public.h"
+
+
+struct st_query_object
+{
+   struct gl_query_object base;
+   struct pipe_query *pq;
+};
+
+
+/**
+ * Cast wrapper
+ */
+static struct st_query_object *
+st_query_object(struct gl_query_object *q)
+{
+   return (struct st_query_object *) q;
+}
+
+
+static struct gl_query_object *
+st_NewQueryObject(GLcontext *ctx, GLuint id)
+{
+   struct st_query_object *stq = CALLOC_STRUCT(st_query_object);
+   if (stq) {
+      stq->base.Id = id;
+      stq->base.Ready = GL_TRUE;
+      stq->pq = NULL;
+      return &stq->base;
+   }
+   return NULL;
+}
+
+
+
+static void
+st_DeleteQuery(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct st_query_object *stq = st_query_object(q);
+
+   if (stq->pq) {
+      pipe->destroy_query(pipe, stq->pq);
+      stq->pq = NULL;
+   }
+
+   FREE(stq);
+}
+
+
+static void
+st_BeginQuery(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct st_query_object *stq = st_query_object(q);
+
+   switch (q->Target) {
+   case GL_SAMPLES_PASSED_ARB:
+      if (!stq->pq)
+	 stq->pq = pipe->create_query( pipe, PIPE_QUERY_OCCLUSION_COUNTER );
+      break;
+   default:
+      assert(0);
+      return;
+   }
+
+   pipe->begin_query(pipe, stq->pq);
+}
+
+
+static void
+st_EndQuery(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct st_query_object *stq = st_query_object(q);
+
+   pipe->end_query(pipe, stq->pq);
+}
+
+
+static void
+st_WaitQuery(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct st_query_object *stq = st_query_object(q);
+
+   /* this function should only be called if we don't have a ready result */
+   assert(!stq->base.Ready);
+
+   while (!stq->base.Ready &&
+	  !pipe->get_query_result(pipe, 
+				  stq->pq,
+				  TRUE,
+				  &q->Result))
+   {
+      /* nothing */
+   }
+			    
+   q->Ready = GL_TRUE;
+}
+
+
+static void
+st_CheckQuery(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct st_query_object *stq = st_query_object(q);
+
+   if (!q->Ready) {
+      q->Ready = pipe->get_query_result(pipe, 
+					stq->pq,
+					FALSE,
+					&q->Result);
+   }
+}
+
+
+
+
+void st_init_query_functions(struct dd_function_table *functions)
+{
+   functions->NewQueryObject = st_NewQueryObject;
+   functions->DeleteQuery = st_DeleteQuery;
+   functions->BeginQuery = st_BeginQuery;
+   functions->EndQuery = st_EndQuery;
+   functions->WaitQuery = st_WaitQuery;
+   functions->CheckQuery = st_CheckQuery;
+}