+++ /dev/null
-/*
- * 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 VBO upload speed.
- * That is, measure glBufferDataARB() and glBufferSubDataARB().
- *
- * Brian Paul
- * 16 Sep 2009
- */
-
-#include <string.h>
-#include "glmain.h"
-#include "common.h"
-
-/* Copy data out of a large array to avoid caching effects:
- */
-#define DATA_SIZE (16*1024*1024)
-
-int WinWidth = 100, WinHeight = 100;
-
-static GLuint VBO;
-
-static GLsizei VBOSize = 0;
-static GLsizei SubSize = 0;
-static GLubyte *VBOData = NULL; /* array[DATA_SIZE] */
-
-static const GLboolean DrawPoint = GL_TRUE;
-static const GLboolean BufferSubDataInHalves = GL_TRUE;
-
-static const GLfloat Vertex0[2] = { 0.0, 0.0 };
-
-
-/** Called from test harness/main */
-void
-PerfInit(void)
-{
- /* setup VBO */
- glGenBuffersARB(1, &VBO);
- glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
- glVertexPointer(2, GL_FLOAT, sizeof(Vertex0), (void *) 0);
- glEnableClientState(GL_VERTEX_ARRAY);
-}
-
-
-static void
-UploadVBO(unsigned count)
-{
- unsigned i;
- unsigned total = 0;
- unsigned src = 0;
-
- for (i = 0; i < count; i++) {
- glBufferDataARB(GL_ARRAY_BUFFER, VBOSize, VBOData + src, GL_STREAM_DRAW_ARB);
- glDrawArrays(GL_POINTS, 0, 1);
-
- /* Throw in an occasional flush to work around a driver crash:
- */
- total += VBOSize;
- if (total >= 16*1024*1024) {
- glFlush();
- total = 0;
- }
-
- src += VBOSize;
- src %= DATA_SIZE;
- }
- glFinish();
-}
-
-
-static void
-UploadSubVBO(unsigned count)
-{
- unsigned i;
- unsigned src = 0;
-
- for (i = 0; i < count; i++) {
- unsigned offset = (i * SubSize) % VBOSize;
- glBufferSubDataARB(GL_ARRAY_BUFFER, offset, SubSize, VBOData + src);
-
- if (DrawPoint) {
- glDrawArrays(GL_POINTS, offset / sizeof(Vertex0), 1);
- }
-
- src += SubSize;
- src %= DATA_SIZE;
- }
- glFinish();
-}
-
-
-/* Do multiple small SubData uploads, then call DrawArrays. This may be a
- * fairer comparison to back-to-back BufferData calls:
- */
-static void
-BatchUploadSubVBO(unsigned count)
-{
- unsigned i = 0, j;
- unsigned period = VBOSize / SubSize;
- unsigned src = 0;
-
- while (i < count) {
- for (j = 0; j < period && i < count; j++, i++) {
- unsigned offset = j * SubSize;
- glBufferSubDataARB(GL_ARRAY_BUFFER, offset, SubSize, VBOData + src);
- }
-
- glDrawArrays(GL_POINTS, 0, 1);
-
- src += SubSize;
- src %= DATA_SIZE;
- }
- glFinish();
-}
-
-
-/**
- * Test the sequence:
- * create/load VBO
- * draw
- * destroy VBO
- */
-static void
-CreateDrawDestroyVBO(unsigned count)
-{
- unsigned i;
- for (i = 0; i < count; i++) {
- GLuint vbo;
- /* create/load */
- glGenBuffersARB(1, &vbo);
- glBindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);
- glBufferDataARB(GL_ARRAY_BUFFER, VBOSize, VBOData, GL_STREAM_DRAW_ARB);
- /* draw */
- glVertexPointer(2, GL_FLOAT, sizeof(Vertex0), (void *) 0);
- glDrawArrays(GL_POINTS, 0, 1);
- /* destroy */
- glDeleteBuffersARB(1, &vbo);
- }
- glFinish();
-}
-
-
-static const GLsizei Sizes[] = {
- 64,
- 1024,
- 16*1024,
- 256*1024,
- 1024*1024,
- 16*1024*1024,
- 0 /* end of list */
-};
-
-void
-PerfNextRound(void)
-{
-}
-
-/** Called from test harness/main */
-void
-PerfDraw(void)
-{
- double rate, mbPerSec;
- int i, sz;
-
- /* Load VBOData buffer with duplicated Vertex0.
- */
- VBOData = calloc(DATA_SIZE, 1);
-
- for (i = 0; i < DATA_SIZE / sizeof(Vertex0); i++) {
- memcpy(VBOData + i * sizeof(Vertex0),
- Vertex0,
- sizeof(Vertex0));
- }
-
- /* glBufferDataARB()
- */
- for (sz = 0; Sizes[sz]; sz++) {
- SubSize = VBOSize = Sizes[sz];
- rate = PerfMeasureRate(UploadVBO);
- mbPerSec = rate * VBOSize / (1024.0 * 1024.0);
- perf_printf(" glBufferDataARB(size = %d): %.1f MB/sec\n",
- VBOSize, mbPerSec);
- }
-
- /* glBufferSubDataARB()
- */
- for (sz = 0; Sizes[sz]; sz++) {
- SubSize = VBOSize = Sizes[sz];
- rate = PerfMeasureRate(UploadSubVBO);
- mbPerSec = rate * VBOSize / (1024.0 * 1024.0);
- perf_printf(" glBufferSubDataARB(size = %d): %.1f MB/sec\n",
- VBOSize, mbPerSec);
- }
-
- /* Batch upload
- */
- VBOSize = 1024 * 1024;
- glBufferDataARB(GL_ARRAY_BUFFER, VBOSize, VBOData, GL_STREAM_DRAW_ARB);
-
- for (sz = 0; Sizes[sz] < VBOSize; sz++) {
- SubSize = Sizes[sz];
- rate = PerfMeasureRate(UploadSubVBO);
- mbPerSec = rate * SubSize / (1024.0 * 1024.0);
- perf_printf(" glBufferSubDataARB(size = %d, VBOSize = %d): %.1f MB/sec\n",
- SubSize, VBOSize, mbPerSec);
- }
-
- for (sz = 0; Sizes[sz] < VBOSize; sz++) {
- SubSize = Sizes[sz];
- rate = PerfMeasureRate(BatchUploadSubVBO);
- mbPerSec = rate * SubSize / (1024.0 * 1024.0);
- perf_printf(" glBufferSubDataARB(size = %d, VBOSize = %d), batched: %.1f MB/sec\n",
- SubSize, VBOSize, mbPerSec);
- }
-
- /* Create/Draw/Destroy
- */
- for (sz = 0; Sizes[sz]; sz++) {
- SubSize = VBOSize = Sizes[sz];
- rate = PerfMeasureRate(CreateDrawDestroyVBO);
- mbPerSec = rate * VBOSize / (1024.0 * 1024.0);
- perf_printf(" VBO Create/Draw/Destroy(size = %d): %.1f MB/sec, %.1f draws/sec\n",
- VBOSize, mbPerSec, rate);
- }
-
- exit(0);
-}
projects / mesa.git / blobdiff