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authorJakob Bornecrantz <jakob@vmware.com>2010-05-21 20:37:23 +0100
committerJakob Bornecrantz <jakob@vmware.com>2010-05-21 21:25:07 +0100
commita93f9f343a64ce91587af66761399f9d4c180015 (patch)
tree02fe536058d72077e38534e9388898cccac4f416 /src/mesa/state_tracker/st_cb_viewport.c
parent5f66363f8ed26d6f3fc8fcccde804fe1fea1bbaa (diff)
gallium: Fix invalidate framebuffer with old libGL libraries
Diffstat (limited to 'src/mesa/state_tracker/st_cb_viewport.c')
-rw-r--r--src/mesa/state_tracker/st_cb_viewport.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_viewport.c b/src/mesa/state_tracker/st_cb_viewport.c
new file mode 100644
index 0000000000..d10b0b2531
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_viewport.c
@@ -0,0 +1,73 @@
+/**************************************************************************
+ *
+ * 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 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.
+ *
+ **************************************************************************/
+
+#include "main/glheader.h"
+#include "st_context.h"
+#include "st_cb_viewport.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "util/u_atomic.h"
+#include "util/u_debug.h"
+
+/**
+ * Cast wrapper to convert a GLframebuffer to an st_framebuffer.
+ * Return NULL if the GLframebuffer is a user-created framebuffer.
+ * We'll only return non-null for window system framebuffers.
+ * Note that this function may fail.
+ */
+static INLINE struct st_framebuffer *
+st_ws_framebuffer(GLframebuffer *fb)
+{
+ /* FBO cannot be casted. See st_new_framebuffer */
+ return (struct st_framebuffer *) ((fb && !fb->Name) ? fb : NULL);
+}
+
+static void st_viewport(GLcontext * ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height)
+{
+ struct st_context *st = ctx->st;
+ struct st_framebuffer *stdraw;
+ struct st_framebuffer *stread;
+
+ if (!st->invalidate_on_gl_viewport)
+ return;
+
+ stdraw = st_ws_framebuffer(st->ctx->DrawBuffer);
+ stread = st_ws_framebuffer(st->ctx->ReadBuffer);
+
+ if (stdraw)
+ p_atomic_set(&stdraw->revalidate, TRUE);
+ if (stread && stread != stdraw)
+ p_atomic_set(&stread->revalidate, TRUE);
+}
+
+void st_init_viewport_functions(struct dd_function_table *functions)
+{
+ functions->Viewport = st_viewport;
+}