Rework testing of trimming of operations with no side effects

[apitrace-tests] / cli / src / few-side-effects.c

diff --git a/cli/src/few-side-effects.c b/cli/src/few-side-effects.c
new file mode 100644 (file)
index 0000000..73374ce
--- /dev/null
+++ b/cli/src/few-side-effects.c
@@ -0,0 +1,188 @@
+/**************************************************************************
+ * Copyright 2012 Intel corporation
+ * 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, 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 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.
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+
+#include <X11/Xlib.h>
+#include <GL/glew.h>
+#include <GL/gl.h>
+#include <GL/glx.h>
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+int width = 64;
+int height = 64;
+
+#ifdef __GNUC__
+#define UNUSED __attribute__((unused))
+#else
+#define UNUSED
+#endif
+
+static void
+set_2d_projection (void)
+{
+       glMatrixMode (GL_PROJECTION);
+       glLoadIdentity ();
+       glOrtho (0, width, height, 0, 0, 1);
+       glMatrixMode (GL_MODELVIEW);
+}
+
+static void
+draw (Display *dpy, Window window, int width, int height)
+{
+       GLenum glew_err;
+        int visual_attr[] = {
+                GLX_RGBA,
+                GLX_RED_SIZE,          8,
+                GLX_GREEN_SIZE,        8,
+                GLX_BLUE_SIZE,         8,
+                GLX_ALPHA_SIZE,        8,
+                GLX_DOUBLEBUFFER,
+                GLX_DEPTH_SIZE,                24,
+                GLX_STENCIL_SIZE,      8,
+                GLX_X_VISUAL_TYPE,     GLX_DIRECT_COLOR,
+                None
+        };
+
+       /* Window and context setup. */
+        XVisualInfo *visual_info = glXChooseVisual(dpy, 0, visual_attr);
+        GLXContext ctx = glXCreateContext(dpy, visual_info, NULL, True);
+        glXMakeCurrent(dpy, window, ctx);
+
+       glew_err = glewInit();
+       if (glew_err != GLEW_OK)
+       {
+               fprintf (stderr, "glewInit failed: %s\n",
+                        glewGetErrorString(glew_err));
+               exit (1);
+       }
+
+        glViewport(0, 0, width, height);
+
+       set_2d_projection ();
+
+       /* Frame 1. Perform a few operations, most without side effects. */
+       {
+               GLint line_width UNUSED, logic_op UNUSED;
+               GLboolean blend_enabled UNUSED;
+
+               glGetIntegerv(GL_LINE_WIDTH, &line_width);
+               glGetIntegerv(GL_LOGIC_OP_MODE, &logic_op);
+
+               blend_enabled = glIsEnabled(GL_BLEND);
+
+               glEnable(GL_BLEND);
+
+               blend_enabled = glIsEnabled(GL_BLEND);
+
+               glDisable(GL_BLEND);
+       }
+       
+       glXSwapBuffers (dpy, window);
+       /* Frame 2. Again, more operations, most with side effects. */
+       {
+               GLint line_width UNUSED, logic_op UNUSED;
+               GLboolean blend_enabled UNUSED;
+
+               glGetIntegerv(GL_LINE_WIDTH, &line_width);
+               glGetIntegerv(GL_LOGIC_OP_MODE, &logic_op);
+
+               blend_enabled = glIsEnabled(GL_BLEND);
+
+               glEnable(GL_BLEND);
+
+               blend_enabled = glIsEnabled(GL_BLEND);
+
+               glDisable(GL_BLEND);
+       }
+
+       /* Cleanup */
+        glXDestroyContext (dpy, ctx);
+}
+
+static void
+handle_events(Display *dpy, Window window, int width, int height)
+{
+        XEvent xev;
+        KeyCode quit_code = XKeysymToKeycode (dpy, XStringToKeysym("Q"));
+
+        XNextEvent (dpy, &xev);
+
+        while (1) {
+                XNextEvent (dpy, &xev);
+                switch (xev.type) {
+                case KeyPress:
+                        if (xev.xkey.keycode == quit_code) {
+                                return;
+                        }
+                        break;
+                case ConfigureNotify:
+                        width = xev.xconfigure.width;
+                        height = xev.xconfigure.height;
+                        break;
+                case Expose:
+                        if (xev.xexpose.count == 0) {
+                                draw (dpy, window, width, height);
+                                return;
+                        }
+                        break;
+                }
+        }
+}
+
+int
+main (void)
+{
+        Display *dpy;
+        Window window;
+
+        dpy = XOpenDisplay (NULL);
+
+        if (dpy == NULL) {
+                fprintf(stderr, "Failed to open display %s\n",
+                        XDisplayName(NULL));
+                return 1;
+        }
+
+        window = XCreateSimpleWindow(dpy, DefaultRootWindow (dpy),
+                                     0, 0, width, height, 0,
+                                     BlackPixel (dpy, DefaultScreen (dpy)),
+                                     BlackPixel (dpy, DefaultScreen (dpy)));
+
+        XSelectInput(dpy, window,
+                     KeyPressMask | StructureNotifyMask | ExposureMask);
+
+        XMapWindow (dpy, window);
+
+        handle_events (dpy, window, width, height);
+
+        XDestroyWindow (dpy, window);
+        XCloseDisplay (dpy);
+
+        return 0;
+}