r300-gallium: Initial, broken, query setup.

Not going to bother unbreaking it here until it's unbroken elsewhere.

src/gallium/drivers/r300/Makefile

@@ -9,6 +9,7 @@ C_SOURCES = \
 	r300_context.c \
 	r300_emit.c \
 	r300_flush.c \
+	r300_query.c \
 	r300_screen.c \
 	r300_state.c \
 	r300_state_derived.c \

src/gallium/drivers/r300/r300_context.c

@@ -133,6 +133,8 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
 
     r300_init_flush_functions(r300);
 
+    r300_init_query_functions(r300);
+
     r300_init_surface_functions(r300);
 
     r300_init_state_functions(r300);

src/gallium/drivers/r300/r300_context.h

@@ -30,6 +30,7 @@
 #include "util/u_memory.h"
 
 #include "r300_clear.h"
+#include "r300_query.h"
 #include "r300_screen.h"
 #include "r300_winsys.h"
 

src/gallium/drivers/r300/r300_query.c

@@ -0,0 +1,74 @@
+/*
+ * 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"
+
+static struct pipe_query* r300_create_query(struct pipe_context* pipe,
+                                            unsigned query_type)
+{
+    struct r300_query* q = CALLOC_STRUCT(r300_query);
+
+    q->type = query_type;
+    assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
+
+    return (struct pipe_query*)q;
+}
+
+static void r300_destroy_query(struct pipe_context* pipe,
+                               struct pipe_query* q)
+{
+    FREE(q);
+}
+
+static void r300_begin_query(struct pipe_context* pipe,
+                             struct pipe_query* q)
+{
+    struct r300_context* r300 = r300_context(pipe);
+    CS_LOCALS(r300);
+
+    BEGIN_CS(2);
+    OUT_CS_REG(R300_ZB_ZPASS_DATA, 0);
+    END_CS;
+}
+
+static void r300_end_query(struct pipe_context* pipe,
+                           struct pipe_query* q)
+{
+    struct r300_context* r300 = r300_context(pipe);
+}
+
+static boolean r300_get_query_result(struct pipe_context* pipe,
+                                     struct pipe_query* q,
+                                     boolean wait,
+                                     uint64_t* result)
+{
+    *result = 0;
+    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;
+}

src/gallium/drivers/r300/r300_query.h

@@ -0,0 +1,41 @@
+/*
+ * 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. */
+
+#ifndef R300_QUERY_H
+#define R300_QUERY_H
+
+#include "r300_context.h"
+#include "r300_cs.h"
+#include "r300_reg.h"
+
+struct r300_query {
+    unsigned type;
+};
+
+static INLINE struct r300_query* r300_query(struct pipe_query* q)
+{
+    return (struct r300_query*)q;
+}
+
+void r300_init_query_functions(struct r300_context* r300);
+
+#endif /* R300_QUERY_H */

src/gallium/drivers/r300/r300_screen.c

@@ -103,8 +103,7 @@ static int r300_get_param(struct pipe_screen* pscreen, int param)
         case PIPE_CAP_MAX_RENDER_TARGETS:
             return 4;
         case PIPE_CAP_OCCLUSION_QUERY:
-            /* IN THEORY */
-            return 0;
+            return 1;
         case PIPE_CAP_TEXTURE_SHADOW_MAP:
             /* IN THEORY */
             return 0;