st/mesa: implement conditional rendering

1 files changed, 95 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_cb_condrender.c b/src/mesa/state_tracker/st_cb_condrender.c
new file mode 100644
index 00000000000..780b40c2065
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_condrender.c
@@ -0,0 +1,95 @@
+/**************************************************************************
+ * 
+ * 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 THE AUTHORS 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/EndCondtionalRender functions
+ *
+ * \author Brian Paul
+ */
+
+
+#include "main/imports.h"
+#include "main/context.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "st_context.h"
+#include "st_cb_queryobj.h"
+#include "st_cb_condrender.h"
+
+
+/**
+ * Called via ctx->Driver.BeginConditionalRender()
+ */
+static void
+st_BeginConditionalRender(GLcontext *ctx, struct gl_query_object *q,
+                          GLenum mode)
+{
+   struct st_query_object *stq = st_query_object(q);
+   struct pipe_context *pipe = ctx->st->pipe;
+   uint m;
+
+   switch (mode) {
+   case GL_QUERY_WAIT:
+      m = PIPE_RENDER_COND_WAIT;
+      break;
+   case GL_QUERY_NO_WAIT:
+      m = PIPE_RENDER_COND_NO_WAIT;
+      break;
+   case GL_QUERY_BY_REGION_WAIT:
+      m = PIPE_RENDER_COND_BY_REGION_WAIT;
+      break;
+   case GL_QUERY_BY_REGION_NO_WAIT:
+      m = PIPE_RENDER_COND_BY_REGION_NO_WAIT;
+      break;
+   default:
+      assert(0 && "bad mode in st_BeginConditionalRender");
+   }
+
+   pipe->render_condition(pipe, stq->pq, m);
+}
+
+
+/**
+ * Called via ctx->Driver.BeginConditionalRender()
+ */
+static void
+st_EndConditionalRender(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   (void) q;
+   pipe->render_condition(pipe, NULL, 0);
+}
+
+
+
+void st_init_cond_render_functions(struct dd_function_table *functions)
+{
+   functions->BeginConditionalRender = st_BeginConditionalRender;
+   functions->EndConditionalRender = st_EndConditionalRender;
+}