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Diffstat (limited to 'progs/perf/swapbuffers.c')
| -rw-r--r-- | progs/perf/swapbuffers.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/progs/perf/swapbuffers.c b/progs/perf/swapbuffers.c new file mode 100644 index 00000000000..79ac372f277 --- /dev/null +++ b/progs/perf/swapbuffers.c @@ -0,0 +1,167 @@ +/* + * Copyright (C) 2009 VMware, Inc. 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 + * VMWARE 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. + */ + +/** + * Measure drawing overhead + * + * This is the first in a series of simple performance benchmarks. + * The code in this file should be as simple as possible to make it + * easily portable to other APIs. + * + * All the window-system stuff should be contained in glmain.c (or TBDmain.c). + * All the re-usable, generic code should be in common.c (XXX not done yet). + * + * Brian Paul + * 15 Sep 2009 + */ + +#include "glmain.h" +#include "common.h" + + +int WinWidth = 100, WinHeight = 100; +int real_WinWidth, real_WinHeight; /* don't know whats going on here */ + +static GLuint VBO; + +struct vertex +{ + GLfloat x, y; +}; + +static const struct vertex vertices[4] = { + { -1.0, -1.0 }, + { 1.0, -1.0 }, + { 1.0, 1.0 }, + { -1.0, 1.0 } +}; + + +/** Called from test harness/main */ +void +PerfInit(void) +{ + /* setup VBO w/ vertex data */ + glGenBuffersARB(1, &VBO); + glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO); + glBufferDataARB(GL_ARRAY_BUFFER_ARB, + sizeof(vertices), vertices, GL_STATIC_DRAW_ARB); + glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), (void *) 0); + glEnableClientState(GL_VERTEX_ARRAY); + + /* misc GL state */ + glAlphaFunc(GL_ALWAYS, 0.0); +} + +static void +SwapNaked(unsigned count) +{ + unsigned i; + for (i = 0; i < count; i++) { + PerfSwapBuffers(); + } +} + + +static void +SwapClear(unsigned count) +{ + unsigned i; + for (i = 0; i < count; i++) { + glClear(GL_COLOR_BUFFER_BIT); + PerfSwapBuffers(); + } +} + +static void +SwapClearPoint(unsigned count) +{ + unsigned i; + for (i = 0; i < count; i++) { + glClear(GL_COLOR_BUFFER_BIT); + glDrawArrays(GL_POINTS, 0, 4); + PerfSwapBuffers(); + } +} + + +static const struct { + unsigned w; + unsigned h; +} sizes[] = { + { 320, 240 }, + { 640, 480 }, + { 1024, 768 }, + { 1200, 1024 }, + { 1600, 1200 } +}; + +void +PerfNextRound(void) +{ + static unsigned i; + + if (i < sizeof(sizes) / sizeof(sizes[0])) { + perf_printf("Reshape %dx%d\n", sizes[i].w, sizes[i].h); + PerfReshapeWindow( sizes[i].w, sizes[i].h ); + real_WinWidth = sizes[i].w; + real_WinHeight = sizes[i].h; + i++; + } + else { + exit(0); + } +} + + + + +/** Called from test harness/main */ +void +PerfDraw(void) +{ + double rate0; + + rate0 = PerfMeasureRate(SwapNaked); + perf_printf(" Swapbuffers (Bare) %dx%d: %s swaps/second", + real_WinWidth, real_WinHeight, + PerfHumanFloat(rate0)); + perf_printf(" %s pixels/second\n", + PerfHumanFloat(rate0 * real_WinWidth * real_WinHeight)); + + + + rate0 = PerfMeasureRate(SwapClear); + perf_printf(" Swapbuffers + Clear %dx%d: %s swaps/second", + real_WinWidth, real_WinHeight, + PerfHumanFloat(rate0)); + perf_printf(" %s pixels/second\n", + PerfHumanFloat(rate0 * real_WinWidth * real_WinHeight)); + + + rate0 = PerfMeasureRate(SwapClearPoint); + perf_printf(" Swapbuffers + Clear + DrawPoint %dx%d: %s swaps/second", + real_WinWidth, real_WinHeight, + PerfHumanFloat(rate0)); + perf_printf(" %s pixels/second\n", + PerfHumanFloat(rate0 * real_WinWidth * real_WinHeight)); +} + |