diff options
| -rw-r--r-- | progs/perf/Makefile | 1 | ||||
| -rw-r--r-- | progs/perf/SConscript | 1 | ||||
| -rw-r--r-- | progs/perf/genmipmap.c | 136 |
3 files changed, 138 insertions, 0 deletions
diff --git a/progs/perf/Makefile b/progs/perf/Makefile index 043e91d..066eb86 100644 --- a/progs/perf/Makefile +++ b/progs/perf/Makefile @@ -18,6 +18,7 @@ PROG_SOURCES = \ drawoverhead.c \ fbobind.c \ fill.c \ + genmipmap.c \ readpixels.c \ swapbuffers.c \ teximage.c \ diff --git a/progs/perf/SConscript b/progs/perf/SConscript index 84f1669..a5ec9a7 100644 --- a/progs/perf/SConscript +++ b/progs/perf/SConscript @@ -12,6 +12,7 @@ progs = [ 'drawoverhead', 'fbobind', 'fill', + 'genmipmap', 'readpixels', 'swapbuffers', 'teximage', diff --git a/progs/perf/genmipmap.c b/progs/perf/genmipmap.c new file mode 100644 index 0000000..4b7d6ad --- /dev/null +++ b/progs/perf/genmipmap.c @@ -0,0 +1,136 @@ +/* + * 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 glGenerateMipmap() speed. + * + * Brian Paul + * 24 Sep 2009 + */ + +#include <string.h> +#include "glmain.h" +#include "common.h" + + +int WinWidth = 100, WinHeight = 100; + +static GLboolean DrawPoint = GL_TRUE; +static GLuint VBO; +static GLuint TexObj = 0; +static GLint BaseLevel, MaxLevel; + +struct vertex +{ + GLfloat x, y, s, t; +}; + +static const struct vertex vertices[1] = { + { 0.0, 0.0, 0.5, 0.5 }, +}; + +#define VOFFSET(F) ((void *) offsetof(struct vertex, F)) + +/** 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), VOFFSET(x)); + glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(s)); + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + + glGenTextures(1, &TexObj); + glBindTexture(GL_TEXTURE_2D, TexObj); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glEnable(GL_TEXTURE_2D); +} + + +static void +GenMipmap(unsigned count) +{ + unsigned i; + for (i = 0; i < count; i++) { + GLubyte texel[4]; + texel[0] = texel[1] = texel[2] = texel[3] = i & 0xff; + /* dirty the base image */ + glTexSubImage2D(GL_TEXTURE_2D, BaseLevel, + 0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, texel); + glGenerateMipmap(GL_TEXTURE_2D); + if (DrawPoint) + glDrawArrays(GL_POINTS, 0, 1); + } + glFinish(); +} + + +/** Called from test harness/main */ +void +PerfNextRound(void) +{ +} + + +/** Called from test harness/main */ +void +PerfDraw(void) +{ + const GLint NumLevels = 12; + const GLint TexWidth = 2048, TexHeight = 2048; + GLubyte *img; + double rate; + + /* Make 2K x 2K texture */ + img = (GLubyte *) malloc(TexWidth * TexHeight * 4); + memset(img, 128, TexWidth * TexHeight * 4); + glTexImage2D(GL_TEXTURE_2D, 0, + GL_RGBA, TexWidth, TexHeight, 0, + GL_RGBA, GL_UNSIGNED_BYTE, img); + free(img); + + perf_printf("Texture level[0] size: %d x %d, %d levels\n", + TexWidth, TexHeight, NumLevels); + + /* loop over base levels 0, 2, 4 */ + for (BaseLevel = 0; BaseLevel <= 4; BaseLevel += 2) { + + /* loop over max level */ + for (MaxLevel = NumLevels; MaxLevel > BaseLevel; MaxLevel--) { + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, BaseLevel); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, MaxLevel); + + rate = PerfMeasureRate(GenMipmap); + + perf_printf(" glGenerateMipmap(levels %d..%d): %.2f gens/sec\n", + BaseLevel + 1, MaxLevel, rate); + } + } + + exit(0); +} |