[Piglit] [PATCH] glx: Introduce a glx-swap-copy test

[Thomas Hellstrom]

Tests the GLX_SWAP_COPY_OML swapbuffer mode. Very similar to the
glx-swap-exchange test.

Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
---
 tests/glx/CMakeLists.gl.txt |   1 +
 tests/glx/glx-swap-copy.c   | 143 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 144 insertions(+)
 create mode 100644 tests/glx/glx-swap-copy.c

diff --git a/tests/glx/CMakeLists.gl.txt b/tests/glx/CMakeLists.gl.txt
index 1e1c684..575e99b 100644
--- a/tests/glx/CMakeLists.gl.txt
+++ b/tests/glx/CMakeLists.gl.txt
@@ -52,6 +52,7 @@ IF(PIGLIT_BUILD_GLX_TESTS)
 	piglit_add_executable (glx-swap-event glx-swap-event.c)
 	piglit_add_executable (glx-make-glxdrawable-current glx-make-glxdrawable-current.c)
 	piglit_add_executable (glx-swap-exchange glx-swap-exchange.c)
+	piglit_add_executable (glx-swap-copy glx-swap-copy.c)
 	piglit_add_executable (glx-swap-pixmap glx-swap-pixmap.c)
 	piglit_add_executable (glx-swap-pixmap-bad glx-swap-pixmap-bad.c)
 	piglit_add_executable (glx-swap-singlebuffer glx-swap-singlebuffer.c)
diff --git a/tests/glx/glx-swap-copy.c b/tests/glx/glx-swap-copy.c
new file mode 100644
index 0000000..3bb1791
--- /dev/null
+++ b/tests/glx/glx-swap-copy.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2010 VMWare Inc.
+ *
+ * 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.
+ *
+ * Authors:
+ *    Eric Anholt <eric at anholt.net>
+ *    Thomas Hellstrom <thellstrom at vmware.com>
+ *
+ */
+
+/** @file glx-swap-copy.c
+ *
+ * Test that GLX_SWAP_COPY_OML does in fact cause the back buffer to get
+ * preserved on swap.
+ */
+
+#include "piglit-util-gl.h"
+#include "piglit-glx-util.h"
+
+int piglit_width = 50, piglit_height = 50;
+static Display *dpy;
+static XVisualInfo *visinfo;
+static GLXFBConfig *config;
+static GLXContext ctx;
+static GLXWindow gwin;
+
+enum piglit_result
+draw(Display *dpy)
+{
+	GLboolean pass = GL_TRUE;
+	static const float red[] = {1.0, 0.0, 0.0, 0.5};
+
+	glXMakeContextCurrent(dpy, gwin, gwin, ctx);
+	glClearColor(1.0, 0.0, 0.0, 0.5);
+	glClear(GL_COLOR_BUFFER_BIT);
+	glXMakeContextCurrent(dpy, None, None, NULL);
+	glXSwapBuffers(dpy, gwin);
+	glXSwapBuffers(dpy, gwin);
+	glXSwapBuffers(dpy, gwin);
+	glXMakeContextCurrent(dpy, gwin, gwin, ctx);
+	glReadBuffer(GL_BACK);
+	pass = piglit_probe_pixel_rgba(0, 0, red);
+	if (pass) {
+		glReadBuffer(GL_FRONT);
+		pass = piglit_probe_pixel_rgb(0, 0, red);
+	}
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+static GLXFBConfig *
+piglit_get_swap_copy_config(Display *dpy)
+{
+	GLXFBConfig *fbc;
+	int nele;
+	int attrib[] = {
+		GLX_RENDER_TYPE, GLX_RGBA_BIT,
+		GLX_RED_SIZE, 8,
+		GLX_GREEN_SIZE, 8,
+		GLX_BLUE_SIZE, 8,
+		GLX_ALPHA_SIZE, 8,
+		GLX_SWAP_METHOD_OML, GLX_SWAP_COPY_OML,
+		GLX_DOUBLEBUFFER, True,
+		None
+	};
+	int screen = DefaultScreen(dpy);
+
+	fbc = glXChooseFBConfig(dpy, screen, attrib, &nele);
+	if (fbc == NULL) {
+		fprintf(stderr,
+			"Couldn't get a GLX_SWAP_COPY_OML, RGBA, "
+			"double-buffered fbconfig\n");
+		piglit_report_result(PIGLIT_SKIP);
+		exit(1);
+	}
+
+	return fbc;
+}
+
+int
+main(int argc, char **argv)
+{
+	int i;
+	const char *glx_extension_list;
+	static Window win;
+
+	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);
+	}
+
+	glx_extension_list = glXQueryExtensionsString(dpy, DefaultScreen(dpy));
+	if (strstr(glx_extension_list, "GLX_OML_swap_method") == NULL) {
+		printf("Requires GLX_OML_swap_method\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	config = piglit_get_swap_copy_config(dpy);
+	visinfo = glXGetVisualFromFBConfig(dpy, config[0]);
+	if (!visinfo) {
+		printf("Error: couldn't create a visual from fbconfig.\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	win = piglit_get_glx_window(dpy, visinfo);
+	XMapWindow(dpy, win);
+	gwin = glXCreateWindow(dpy, config[0], win, NULL);
+	ctx = glXCreateNewContext(dpy, config[0], GLX_RGBA_TYPE, 0, GL_TRUE);
+	glXMakeContextCurrent(dpy, gwin, gwin, ctx);
+	piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
+
+	piglit_glx_event_loop(dpy, draw);
+
+	return 0;
+}
-- 
2.7.4