1 files changed, 145 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_query.c b/src/gallium/drivers/r300/r300_query.c
new file mode 100644
index 0000000000..2880d34877
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_query.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+#include "r300_query.h"
+
+#include "r300_emit.h"
+
+static struct pipe_query* r300_create_query(struct pipe_context* pipe,
+                                            unsigned query_type)
+{
+    struct r300_context* r300 = r300_context(pipe);
+    struct r300_screen* r300screen = r300_screen(r300->context.screen);
+    unsigned query_size = r300screen->caps->num_frag_pipes * 4;
+    struct r300_query* q, * qptr;
+
+    q = CALLOC_STRUCT(r300_query);
+
+    q->type = query_type;
+    assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
+
+    q->active = FALSE;
+
+    if (!r300->query_list) {
+        r300->query_list = q;
+    } else if (!is_empty_list(r300->query_list)) {
+        qptr = last_elem(r300->query_list);
+        q->offset = qptr->offset + query_size;
+        insert_at_tail(r300->query_list, q);
+    }
+
+    /* XXX */
+    if (q->offset >= 4096) {
+        q->offset = 0;
+    }
+
+    return (struct pipe_query*)q;
+}
+
+static void r300_destroy_query(struct pipe_context* pipe,
+                               struct pipe_query* query)
+{
+    struct r300_query* q = (struct r300_query*)query;
+
+    remove_from_list(q);
+    FREE(query);
+}
+
+static void r300_begin_query(struct pipe_context* pipe,
+                             struct pipe_query* query)
+{
+    uint32_t* map;
+    struct r300_context* r300 = r300_context(pipe);
+    struct r300_query* q = (struct r300_query*)query;
+
+    map = pipe->screen->buffer_map(pipe->screen, r300->oqbo,
+            PIPE_BUFFER_USAGE_CPU_WRITE);
+    map += q->offset / 4;
+    *map = ~0;
+    pipe->screen->buffer_unmap(pipe->screen, r300->oqbo);
+
+    r300_emit_dirty_state(r300);
+    r300_emit_query_begin(r300, q);
+}
+
+static void r300_end_query(struct pipe_context* pipe,
+                           struct pipe_query* query)
+{
+    struct r300_context* r300 = r300_context(pipe);
+    struct r300_query* q = (struct r300_query*)query;
+
+    r300_emit_dirty_state(r300);
+    r300_emit_query_end(r300, q);
+}
+
+static boolean r300_get_query_result(struct pipe_context* pipe,
+                                     struct pipe_query* query,
+                                     boolean wait,
+                                     uint64_t* result)
+{
+    struct r300_context* r300 = r300_context(pipe);
+    struct r300_screen* r300screen = r300_screen(r300->context.screen);
+    struct r300_query* q = (struct r300_query*)query;
+    unsigned flags = PIPE_BUFFER_USAGE_CPU_READ;
+    uint32_t* map;
+    uint32_t temp;
+    unsigned i;
+
+    if (wait) {
+        pipe->flush(pipe, 0, NULL);
+    } else {
+        flags |= PIPE_BUFFER_USAGE_DONTBLOCK;
+    }
+
+    map = pipe->screen->buffer_map(pipe->screen, r300->oqbo, flags);
+    map += q->offset / 4;
+    for (i = 0; i < r300screen->caps->num_frag_pipes; i++) {
+        if (*map == ~0) {
+            /* Looks like our results aren't ready yet. */
+            if (wait) {
+                debug_printf("r300: Despite waiting, OQ results haven't"
+                        " come in yet.\n");
+            }
+            temp = ~0;
+            break;
+        }
+        temp += *map;
+        map++;
+    }
+    pipe->screen->buffer_unmap(pipe->screen, r300->oqbo);
+
+    if (temp == ~0) {
+        /* Our results haven't been written yet... */
+        return FALSE;
+    }
+
+    *result = temp;
+    return TRUE;
+}
+
+void r300_init_query_functions(struct r300_context* r300) {
+    r300->context.create_query = r300_create_query;
+    r300->context.destroy_query = r300_destroy_query;
+    r300->context.begin_query = r300_begin_query;
+    r300->context.end_query = r300_end_query;
+    r300->context.get_query_result = r300_get_query_result;
+}