glx-swap-singlebuffer: New test for no-op glXSwapBuffers().

Reviewed-by: Chad Versace <chad@chad-versace.us>

2 files changed, 121 insertions, 0 deletions

diff --git a/tests/glx/CMakeLists.gl.txt b/tests/glx/CMakeLists.gl.txt
index 2cbc0466..b5be55d2 100644
--- a/tests/glx/CMakeLists.gl.txt
+++ b/tests/glx/CMakeLists.gl.txt
@@ -35,6 +35,7 @@ IF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 	add_executable (glx-swap-event glx-swap-event.c)
 	add_executable (glx-make-glxdrawable-current glx-make-glxdrawable-current.c)
 	add_executable (glx-swap-exchange glx-swap-exchange.c)
+	add_executable (glx-swap-singlebuffer glx-swap-singlebuffer.c)
 	add_executable (glx-tfp glx-tfp.c)
 	target_link_libraries(glx-tfp Xrender)
 
diff --git a/tests/glx/glx-swap-singlebuffer.c b/tests/glx/glx-swap-singlebuffer.c
new file mode 100644
index 00000000..b04a44a2
--- /dev/null
+++ b/tests/glx/glx-swap-singlebuffer.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright © 2011 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 glx-swap-singlebuffer.c
+ *
+ * Test that glXSwapbuffer() on a single-buffered FBConfig is a noop.
+ *
+ * From the GLX 1.4 specification page 34 (page 40 of the PDF):
+ *
+ *     This operation is a no-op if draw was created with a
+ *     non-double-buffered GLXFBConfig, or if draw is a GLXPixmap.
+ */
+
+#include "piglit-util.h"
+#include "piglit-glx-util.h"
+
+int piglit_width = 50, piglit_height = 50;
+static Display *dpy;
+static Window win;
+static XVisualInfo *visinfo;
+
+enum piglit_result
+draw(Display *dpy)
+{
+	bool pass = true;
+	float green[] = {0.0, 1.0, 0.0, 0.0};
+	GLXContext ctx;
+
+	ctx = piglit_get_glx_context(dpy, visinfo);
+	glXMakeCurrent(dpy, win, ctx);
+
+	/* Clear to green */
+	glClearColor(0.0, 1.0, 0.0, 0.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	/* Noop */
+	glXSwapBuffers(dpy, win);
+
+	/* We want to actually catch any X error that leaks through as
+	 * a result of glXSwapBuffers() before we go saying "pass" or
+	 * "fail".
+	 */
+	XSync(dpy, False);
+
+	pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, green);
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+XVisualInfo *
+get_single_buffer_visual(Display *dpy)
+{
+	XVisualInfo *visinfo;
+	int attrib[] = {
+		GLX_RGBA,
+		GLX_RED_SIZE, 1,
+		GLX_GREEN_SIZE, 1,
+		GLX_BLUE_SIZE, 1,
+		GLX_ALPHA_SIZE, 1,
+		None
+	};
+	int screen = DefaultScreen(dpy);
+
+	visinfo = glXChooseVisual(dpy, screen, attrib);
+	if (visinfo == NULL) {
+		fprintf(stderr,
+			"Couldn't get a single buffered, RGBA visual\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	return visinfo;
+}
+
+int
+main(int argc, char **argv)
+{
+	int i;
+
+	for(i = 1; i < argc; ++i) {
+		if (!strcmp(argv[i], "-auto"))
+			piglit_automatic = 1;
+		else
+			fprintf(stderr, "Unknown option: %s\n", argv[i]);
+	}
+
+	dpy = XOpenDisplay(NULL);
+	if (dpy == NULL) {
+		fprintf(stderr, "couldn't open display\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	visinfo = get_single_buffer_visual(dpy);
+	win = piglit_get_glx_window(dpy, visinfo);
+
+	XMapWindow(dpy, win);
+
+	piglit_glx_event_loop(dpy, draw);
+
+	return 0;
+}