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-rw-r--r--progs/tests/api_speed.c146
-rwxr-xr-xprogs/tests/api_speed.py143
2 files changed, 289 insertions, 0 deletions
diff --git a/progs/tests/api_speed.c b/progs/tests/api_speed.c
new file mode 100644
index 00000000000..f42c73dfc90
--- /dev/null
+++ b/progs/tests/api_speed.c
@@ -0,0 +1,146 @@
+/*
+ * (C) Copyright IBM Corporation 2002
+ * 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
+ * on 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
+ * VA LINUX SYSTEM, IBM AND/OR THEIR 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.
+ */
+
+/**
+ * \file api_speed.c
+ * Simple test to measure the overhead of making GL calls.
+ *
+ * The main purpose of this test is to measure the difference in calling
+ * overhead of different dispatch methods. Since it uses asm/timex.h to
+ * access the Pentium's cycle counters, it will probably only compile on
+ * Linux (though most architectures have a get_cycles function in timex.h).
+ * That is why it isn't in the default Makefile.
+ *
+ * \author Ian Romanick <[email protected]>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <GL/glext.h>
+#include <GL/glut.h>
+
+#define inline __inline__
+#include <asm/timex.h>
+
+static float Width = 400;
+static float Height = 400;
+static unsigned count = 1000000;
+
+
+static void Idle( void )
+{
+ glutPostRedisplay();
+}
+
+#define DO_FUNC(f,p) \
+ do { \
+ t0 = get_cycles(); \
+ for ( i = 0 ; i < count ; i++ ) { \
+ f p ; \
+ } \
+ t1 = get_cycles(); \
+ printf("%u calls to % 20s required %llu cycles.\n", count, # f, t1 - t0); \
+ } while( 0 )
+
+/**
+ * Main display function. This is the place to add more API calls.
+ */
+static void Display( void )
+{
+ int i;
+ const float v[3] = { 1.0, 0.0, 0.0 };
+ cycles_t t0;
+ cycles_t t1;
+
+ glBegin(GL_TRIANGLE_STRIP);
+
+ DO_FUNC( glColor3fv, (v) );
+ DO_FUNC( glNormal3fv, (v) );
+ DO_FUNC( glTexCoord2fv, (v) );
+ DO_FUNC( glTexCoord3fv, (v) );
+ DO_FUNC( glMultiTexCoord2fv, (GL_TEXTURE0, v) );
+ DO_FUNC( glMultiTexCoord2f, (GL_TEXTURE0, 0.0, 0.0) );
+ DO_FUNC( glFogCoordfv, (v) );
+ DO_FUNC( glFogCoordf, (0.5) );
+
+ glEnd();
+
+ exit(0);
+}
+
+
+static void Reshape( int width, int height )
+{
+ Width = width;
+ Height = height;
+ glViewport( 0, 0, width, height );
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glOrtho(0.0, width, 0.0, height, -1.0, 1.0);
+ glMatrixMode( GL_MODELVIEW );
+ glLoadIdentity();
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+ (void) x;
+ (void) y;
+ switch (key) {
+ case 27:
+ exit(0);
+ break;
+ }
+ glutPostRedisplay();
+}
+
+
+int main( int argc, char *argv[] )
+{
+ glutInit( &argc, argv );
+ glutInitWindowSize( (int) Width, (int) Height );
+ glutInitWindowPosition( 0, 0 );
+
+ glutInitDisplayMode( GLUT_RGB );
+
+ glutCreateWindow( argv[0] );
+
+ if ( argc > 1 ) {
+ count = strtoul( argv[1], NULL, 0 );
+ if ( count == 0 ) {
+ fprintf( stderr, "Usage: %s [iterations]\n", argv[0] );
+ exit(1);
+ }
+ }
+
+ glutReshapeFunc( Reshape );
+ glutKeyboardFunc( Key );
+ glutDisplayFunc( Display );
+ glutIdleFunc( Idle );
+
+ glutMainLoop();
+ return 0;
+}
diff --git a/progs/tests/api_speed.py b/progs/tests/api_speed.py
new file mode 100755
index 00000000000..d209676261f
--- /dev/null
+++ b/progs/tests/api_speed.py
@@ -0,0 +1,143 @@
+#!/usr/bin/env python2
+
+# (C) Copyright IBM Corporation 2004
+# 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
+# on 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
+# IBM 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.
+#
+# Authors:
+# Ian Romanick <[email protected]>
+
+
+# This script is used to run api_speed against several different libGL
+# libraries and compare the results. See the show_usage function for more
+# details on how to use it.
+
+
+import re, os, sys, getopt
+
+class results:
+ def process_file(self, f):
+ self.cycles = {}
+ self.iterations = -1
+
+ for line in f.readlines():
+ m = re.match("(\d+) calls to (.{20}) required (\d+) cycles.", line)
+
+ if self.iterations != -1 and int(m.group(1)) != self.iterations:
+ raise
+
+ # This could be done with lstrip, but the version of
+ # the Python library on my system doesn't have it.
+ # The installed version of Python is quite old. :(
+
+ temp = m.group(2)
+ function_name = None
+ for i in range(len(temp)):
+ if temp[i] != ' ':
+ function_name = temp[i:]
+ break
+
+ if function_name == None:
+ raise
+
+ self.cycles[ function_name ] = int(m.group(3))
+ self.iterations = int(m.group(1))
+
+
+ def show_results(self):
+ for name in self.cycles:
+ print "%s -> %f" % (name, float(self.cycles[name]) / self.iterations)
+
+
+ def compare_results(self, other):
+ for name in self.cycles:
+ if other.cycles.has_key(name):
+ a = float(self.cycles[name]) / self.iterations
+ b = float(other.cycles[name]) / other.iterations
+ p = (100.0 * b / a) - 100.0
+ print "%- 20s %7.2f - %7.2f = % -6.2f (%+.1f%%)" % (name, a, b, a - b, p)
+ return
+
+
+def make_execution_string(lib, iterations):
+ if lib == None:
+ return "./api_speed %u" % (iterations)
+ else:
+ return "LD_PRELOAD=%s ./api_speed %u" % (lib, iterations)
+
+
+def show_usage():
+ print """Usage: %s [-i iterations] {library ...}
+
+The full path to one or more libGL libraries (including the full name of the
+library) can be included on the command-line. Each library will be tested,
+and the results compared. The first library listed will be used as the
+"base line" for all comparisons.""" % (sys.argv[0])
+ sys.exit(1)
+
+
+if __name__ == '__main__':
+ try:
+ (args, trail) = getopt.getopt(sys.argv[1:], "i:")
+ except Exception,e:
+ show_usage()
+
+ iterations = 1000000
+ try:
+ for (arg,val) in args:
+ if arg == "-i":
+ iterations = int(val)
+ except Exception,e:
+ show_usage()
+
+
+ result_array = []
+ names = []
+
+
+ # If no libraries were specifically named, just run the test against
+ # the default system libGL.
+
+ if len(trail) == 0:
+ s = make_execution_string( None, iterations )
+ r = results()
+ r.process_file( os.popen(s) )
+ result_array.append(r)
+ else:
+ for lib in trail:
+ s = make_execution_string( lib, iterations )
+ r = results()
+ r.process_file( os.popen(s) )
+ names.append(lib)
+ result_array.append(r)
+
+
+ # If the test was only run against one library, just show the results
+ # of the test run. Otherwise, compare each successive run against
+ # the first run.
+
+ if len( result_array ) == 1:
+ result_array[0].show_results()
+ else:
+ for i in range(1, len( result_array )):
+ print "%s vs. %s" % (names[0], names[i])
+ result_array[0].compare_results( result_array[i] )
+ print ""
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