[Piglit] [PATCH] Add test case to verify swapping buffers without active context.

[Yi Sun]

From: Sun Yi <yi.sun at intel.com>

Test swapping buffers on NULL context.
Verify that swapping buffers without active context is ignored.
Test rendered a triangle afterwards active context is deselected
and buffers swapping is performed by calling function glXSwapBuffers.

Signed-off-by: Yi Sun <yi.sun at intel.com>
---
 tests/spec/gl-2.1/CMakeLists.gl.txt |    1 +
 tests/spec/gl-2.1/swapbuffer.c      |   65 +++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 0 deletions(-)
 create mode 100644 tests/spec/gl-2.1/swapbuffer.c

diff --git a/tests/spec/gl-2.1/CMakeLists.gl.txt b/tests/spec/gl-2.1/CMakeLists.gl.txt
index 9a4afbe..c1002f6 100644
--- a/tests/spec/gl-2.1/CMakeLists.gl.txt
+++ b/tests/spec/gl-2.1/CMakeLists.gl.txt
@@ -14,3 +14,4 @@ link_libraries (
 )
 
 add_executable (gl-2.1-minmax minmax.c)
+add_executable (swapbuffer swapbuffer.c)
diff --git a/tests/spec/gl-2.1/swapbuffer.c b/tests/spec/gl-2.1/swapbuffer.c
new file mode 100644
index 0000000..ff7920a
--- /dev/null
+++ b/tests/spec/gl-2.1/swapbuffer.c
@@ -0,0 +1,65 @@
+/* Copyright © 2012 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.
+ */
+
+/**
+ * file swapbuffer.c
+ *
+ * Test swapping buffers on NULL context.
+ * Verify that swapping buffers without active context is ignored.
+ * Test rendered a triangle afterwards active context is deselected 
+ * and buffers swapping is performed.
+ *
+ * Test is expected no crash occurs during testcase execution.
+ *
+ * Author Yi Sun <yi.sun at intel.com>
+ */
+
+#include "piglit-util.h"
+#include <X11/Xlib.h>
+#include <GL/glx.h>
+
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+
+
+enum piglit_result
+piglit_display(void)
+{	
+	glBegin(GL_TRIANGLES);
+		glVertex2f(0,0);
+		glVertex2f(0,1);
+		glVertex2f(1,1);
+	glEnd();
+
+	Display *dpy = glXGetCurrentDisplay();
+	GLXDrawable draw = glXGetCurrentDrawable();
+
+	glXMakeContextCurrent(dpy, 0, 0, 0);	//deselect the context
+	glXSwapBuffers(dpy, draw);				//swap buffer, no crashing expected
+
+	return PIGLIT_PASS;
+}
+
+void piglit_init(int argc, char **argv)
+{
+
+}
-- 
1.7.6.4