i965g: wip on removing GL stuff, trying to get a few files compiling

1 files changed, 246 insertions, 0 deletions

diff --git a/src/gallium/drivers/i965/brw_pipe_query.c b/src/gallium/drivers/i965/brw_pipe_query.c
new file mode 100644
index 0000000000..0b9ba0c0ed
--- /dev/null
+++ b/src/gallium/drivers/i965/brw_pipe_query.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+/** @file support for ARB_query_object
+ *
+ * ARB_query_object is implemented by using the PIPE_CONTROL command to stall
+ * execution on the completion of previous depth tests, and write the
+ * current PS_DEPTH_COUNT to a buffer object.
+ *
+ * We use before and after counts when drawing during a query so that
+ * we don't pick up other clients' query data in ours.  To reduce overhead,
+ * a single BO is used to record the query data for all active queries at
+ * once.  This also gives us a simple bound on how much batchbuffer space is
+ * required for handling queries, so that we can be sure that we won't
+ * have to emit a batchbuffer without getting the ending PS_DEPTH_COUNT.
+ */
+#include "util/u_simple_list.h"
+
+#include "brw_context.h"
+#include "brw_state.h"
+#include "intel_batchbuffer.h"
+#include "intel_reg.h"
+
+/** Waits on the query object's BO and totals the results for this query */
+static void
+brw_queryobj_get_results(struct brw_query_object *query)
+{
+   int i;
+   uint64_t *results;
+
+   if (query->bo == NULL)
+      return;
+
+   /* Map and count the pixels from the current query BO */
+   dri_bo_map(query->bo, GL_FALSE);
+   results = query->bo->virtual;
+   for (i = query->first_index; i <= query->last_index; i++) {
+      query->Base.Result += results[i * 2 + 1] - results[i * 2];
+   }
+   dri_bo_unmap(query->bo);
+
+   brw->sws->bo_unreference(query->bo);
+   query->bo = NULL;
+}
+
+static struct pipe_query *
+brw_query_create(struct pipe_context *pipe, unsigned type )
+{
+   struct brw_query_object *query;
+
+   switch (query->type) {
+   case PIPE_QUERY_OCCLUSION_COUNTER:
+      query = CALLOC_STRUCT( brw_query_object );
+      if (query == NULL)
+	 return NULL;
+      return &query->Base;
+      
+   default:
+      return NULL;
+   }
+}
+
+static void
+brw_query_destroy(struct pipe_context *pipe, struct pipe_query *q)
+{
+   struct brw_query_object *query = (struct brw_query_object *)q;
+
+   brw->sws->bo_unreference(query->bo);
+   FREE(query);
+}
+
+static void
+brw_begin_query(struct pipe_context *pipe, struct pipe_query *q)
+{
+   struct brw_context *brw = brw_context(pipe);
+   struct brw_query_object *query = (struct brw_query_object *)q;
+
+   /* Reset our driver's tracking of query state. */
+   brw->sws->bo_unreference(query->bo);
+   query->bo = NULL;
+   query->first_index = -1;
+   query->last_index = -1;
+
+   insert_at_head(&brw->query.active_head, query);
+   brw->stats_wm++;
+   brw->dirty.mesa |= PIPE_NEW_QUERY;
+}
+
+static void
+brw_end_query(struct pipe_context *pipe, struct pipe_query *q)
+{
+   struct brw_context *brw = brw_context(pipe);
+   struct brw_query_object *query = (struct brw_query_object *)q;
+
+   /* Flush the batchbuffer in case it has writes to our query BO.
+    * Have later queries write to a new query BO so that further rendering
+    * doesn't delay the collection of our results.
+    */
+   if (query->bo) {
+      brw_emit_query_end(brw);
+      intel_batchbuffer_flush(brw->batch);
+
+      brw->sws->bo_unreference(brw->query.bo);
+      brw->query.bo = NULL;
+   }
+
+   remove_from_list(query);
+   brw->stats_wm--;
+   brw->dirty.mesa |= PIPE_NEW_QUERY;
+}
+
+static void brw_wait_query(struct pipe_context *pipe, struct pipe_query *q)
+{
+   struct brw_query_object *query = (struct brw_query_object *)q;
+
+   brw_queryobj_get_results(query);
+   query->Base.Ready = GL_TRUE;
+}
+
+static void brw_check_query(struct pipe_context *pipe, struct pipe_query *q)
+{
+   struct brw_query_object *query = (struct brw_query_object *)q;
+
+   if (query->bo == NULL || !drm_intel_bo_busy(query->bo)) {
+      brw_queryobj_get_results(query);
+      query->Base.Ready = GL_TRUE;
+   }
+}
+
+/** Called to set up the query BO and account for its aperture space */
+void
+brw_prepare_query_begin(struct brw_context *brw)
+{
+   /* Skip if we're not doing any queries. */
+   if (is_empty_list(&brw->query.active_head))
+      return;
+
+   /* Get a new query BO if we're going to need it. */
+   if (brw->query.bo == NULL ||
+       brw->query.index * 2 + 1 >= 4096 / sizeof(uint64_t)) {
+      brw->sws->bo_unreference(brw->query.bo);
+      brw->query.bo = NULL;
+
+      brw->query.bo = dri_bo_alloc(brw->bufmgr, "query", 4096, 1);
+      brw->query.index = 0;
+   }
+
+   brw_add_validated_bo(brw, brw->query.bo);
+}
+
+/** Called just before primitive drawing to get a beginning PS_DEPTH_COUNT. */
+void
+brw_emit_query_begin(struct brw_context *brw)
+{
+   struct brw_query_object *query;
+
+   /* Skip if we're not doing any queries, or we've emitted the start. */
+   if (brw->query.active || is_empty_list(&brw->query.active_head))
+      return;
+
+   BEGIN_BATCH(4, IGNORE_CLIPRECTS);
+   OUT_BATCH(_3DSTATE_PIPE_CONTROL |
+	     PIPE_CONTROL_DEPTH_STALL |
+	     PIPE_CONTROL_WRITE_DEPTH_COUNT);
+   /* This object could be mapped cacheable, but we don't have an exposed
+    * mechanism to support that.  Since it's going uncached, tell GEM that
+    * we're writing to it.  The usual clflush should be all that's required
+    * to pick up the results.
+    */
+   OUT_RELOC(brw->query.bo,
+	     I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
+	     PIPE_CONTROL_GLOBAL_GTT_WRITE |
+	     ((brw->query.index * 2) * sizeof(uint64_t)));
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   ADVANCE_BATCH();
+
+   foreach(query, &brw->query.active_head) {
+      if (query->bo != brw->query.bo) {
+	 if (query->bo != NULL)
+	    brw_queryobj_get_results(query);
+	 brw->sws->bo_reference(brw->query.bo);
+	 query->bo = brw->query.bo;
+	 query->first_index = brw->query.index;
+      }
+      query->last_index = brw->query.index;
+   }
+   brw->query.active = GL_TRUE;
+}
+
+/** Called at batchbuffer flush to get an ending PS_DEPTH_COUNT */
+void
+brw_emit_query_end(struct brw_context *brw)
+{
+   if (!brw->query.active)
+      return;
+
+   BEGIN_BATCH(4, IGNORE_CLIPRECTS);
+   OUT_BATCH(_3DSTATE_PIPE_CONTROL |
+	     PIPE_CONTROL_DEPTH_STALL |
+	     PIPE_CONTROL_WRITE_DEPTH_COUNT);
+   OUT_RELOC(brw->query.bo,
+	     I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
+	     PIPE_CONTROL_GLOBAL_GTT_WRITE |
+	     ((brw->query.index * 2 + 1) * sizeof(uint64_t)));
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   ADVANCE_BATCH();
+
+   brw->query.active = GL_FALSE;
+   brw->query.index++;
+}
+
+void brw_init_queryobj_functions(struct dd_function_table *functions)
+{
+   functions->NewQueryObject = brw_new_query_object;
+   functions->DeleteQuery = brw_delete_query;
+   functions->BeginQuery = brw_begin_query;
+   functions->EndQuery = brw_end_query;
+   functions->CheckQuery = brw_check_query;
+   functions->WaitQuery = brw_wait_query;
+}