progs/perf/teximage.c

   1 /*
   2  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  */
  21
  22 /**
  23  * Measure glTex[Sub]Image2D() and glGetTexImage() rate
  24  *
  25  * Brian Paul
  26  * 16 Sep 2009
  27  */
  28
  29 #include "glmain.h"
  30 #include "common.h"
  31
  32
  33 int WinWidth = 100, WinHeight = 100;
  34
  35 static GLuint VBO;
  36 static GLuint TexObj = 0;
  37 static GLubyte *TexImage = NULL;
  38 static GLsizei TexSize;
  39 static GLenum TexIntFormat, TexSrcFormat, TexSrcType;
  40
  41 static const GLboolean DrawPoint = GL_TRUE;
  42 static const GLboolean TexSubImage4 = GL_FALSE;
  43
  44 enum {
  45    MODE_CREATE_TEXIMAGE,
  46    MODE_TEXIMAGE,
  47    MODE_TEXSUBIMAGE,
  48    MODE_GETTEXIMAGE,
  49    MODE_COUNT
  50 };
  51
  52 static const char *mode_name[MODE_COUNT] =
  53 {
  54    "Create_TexImage",
  55    "TexImage",
  56    "TexSubImage",
  57    "GetTexImage"
  58 };
  59
  60
  61
  62 struct vertex
  63 {
  64    GLfloat x, y, s, t;
  65 };
  66
  67 static const struct vertex vertices[1] = {
  68    { 0.0, 0.0, 0.5, 0.5 },
  69 };
  70
  71 #define VOFFSET(F) ((void *) offsetof(struct vertex, F))
  72
  73
  74 /** Called from test harness/main */
  75 void
  76 PerfInit(void)
  77 {
  78    /* setup VBO w/ vertex data */
  79    glGenBuffersARB(1, &VBO);
  80    glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
  81    glBufferDataARB(GL_ARRAY_BUFFER_ARB,
  82                    sizeof(vertices), vertices, GL_STATIC_DRAW_ARB);
  83    glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(x));
  84    glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(s));
  85    glEnableClientState(GL_VERTEX_ARRAY);
  86    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
  87
  88    /* texture */
  89    glGenTextures(1, &TexObj);
  90    glBindTexture(GL_TEXTURE_2D, TexObj);
  91    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  92    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  93    glEnable(GL_TEXTURE_2D);
  94 }
  95
  96
  97
  98
  99 static void
 100 CreateUploadTexImage2D(unsigned count)
 101 {
 102    unsigned i;
 103    for (i = 0; i < count; i++) {
 104       if (TexObj)
 105          glDeleteTextures(1, &TexObj);
 106
 107       glGenTextures(1, &TexObj);
 108       glBindTexture(GL_TEXTURE_2D, TexObj);
 109       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 110       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 111
 112       glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
 113                    TexSize, TexSize, 0,
 114                    TexSrcFormat, TexSrcType, TexImage);
 115
 116       if (DrawPoint)
 117          glDrawArrays(GL_POINTS, 0, 1);
 118    }
 119    glFinish();
 120 }
 121
 122
 123 static void
 124 UploadTexImage2D(unsigned count)
 125 {
 126    unsigned i;
 127    for (i = 0; i < count; i++) {
 128       /* XXX is this equivalent to a glTexSubImage call since we're
 129        * always specifying the same image size?  That case isn't optimized
 130        * in Mesa but may be optimized in other drivers.  Note sure how
 131        * much difference that might make.
 132        */
 133       glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
 134                    TexSize, TexSize, 0,
 135                    TexSrcFormat, TexSrcType, TexImage);
 136       if (DrawPoint)
 137          glDrawArrays(GL_POINTS, 0, 1);
 138    }
 139    glFinish();
 140 }
 141
 142
 143 static void
 144 UploadTexSubImage2D(unsigned count)
 145 {
 146    unsigned i;
 147    for (i = 0; i < count; i++) {
 148       if (TexSubImage4) {
 149          GLsizei halfSize = (TexSize == 1) ? 1 : TexSize / 2;
 150          GLsizei halfPos = TexSize - halfSize;
 151          /* do glTexSubImage2D in four pieces */
 152          /* lower-left */
 153          glPixelStorei(GL_UNPACK_ROW_LENGTH, TexSize);
 154          glTexSubImage2D(GL_TEXTURE_2D, 0,
 155                          0, 0, halfSize, halfSize,
 156                          TexSrcFormat, TexSrcType, TexImage);
 157          /* lower-right */
 158          glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
 159          glTexSubImage2D(GL_TEXTURE_2D, 0,
 160                          halfPos, 0, halfSize, halfSize,
 161                          TexSrcFormat, TexSrcType, TexImage);
 162          /* upper-left */
 163          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
 164          glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
 165          glTexSubImage2D(GL_TEXTURE_2D, 0,
 166                          0, halfPos, halfSize, halfSize,
 167                          TexSrcFormat, TexSrcType, TexImage);
 168          /* upper-right */
 169          glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
 170          glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
 171          glTexSubImage2D(GL_TEXTURE_2D, 0,
 172                          halfPos, halfPos, halfSize, halfSize,
 173                          TexSrcFormat, TexSrcType, TexImage);
 174          /* reset the unpacking state */
 175          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
 176          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
 177          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
 178       }
 179       else {
 180          /* replace whole texture image at once */
 181          glTexSubImage2D(GL_TEXTURE_2D, 0,
 182                          0, 0, TexSize, TexSize,
 183                          TexSrcFormat, TexSrcType, TexImage);
 184       }
 185       if (DrawPoint)
 186          glDrawArrays(GL_POINTS, 0, 1);
 187    }
 188    glFinish();
 189 }
 190
 191
 192 static void
 193 GetTexImage2D(unsigned count)
 194 {
 195    unsigned i;
 196    GLubyte *buf = (GLubyte *) malloc(TexSize * TexSize * 4);
 197    for (i = 0; i < count; i++) {
 198       glGetTexImage(GL_TEXTURE_2D, 0,
 199                     TexSrcFormat, TexSrcType, buf);
 200    }
 201    glFinish();
 202    free(buf);
 203 }
 204
 205
 206 /* XXX any other formats to measure? */
 207 static const struct {
 208    GLenum format, type;
 209    GLenum internal_format;
 210    const char *name;
 211    GLuint texel_size;
 212    GLboolean full_test;
 213 } SrcFormats[] = {
 214    { GL_RGBA, GL_UNSIGNED_BYTE,       GL_RGBA, "RGBA/ubyte", 4,   GL_TRUE },
 215    { GL_RGB, GL_UNSIGNED_BYTE,        GL_RGB, "RGB/ubyte", 3,     GL_FALSE },
 216    { GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_RGB, "RGB/565", 2,       GL_FALSE },
 217    { GL_BGRA, GL_UNSIGNED_BYTE,       GL_RGBA, "BGRA/ubyte", 4,   GL_FALSE },
 218    { GL_LUMINANCE, GL_UNSIGNED_BYTE,  GL_LUMINANCE, "L/ubyte", 1, GL_FALSE },
 219    { 0, 0, 0, NULL, 0, 0 }
 220 };
 221
 222
 223 /** Called from test harness/main */
 224 void
 225 PerfNextRound(void)
 226 {
 227 }
 228
 229
 230 /** Called from test harness/main */
 231 void
 232 PerfDraw(void)
 233 {
 234    GLint maxSize;
 235    double rate;
 236    GLint fmt, mode;
 237
 238    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
 239
 240    /* loop over source data formats */
 241    for (fmt = 0; SrcFormats[fmt].format; fmt++) {
 242       TexIntFormat = SrcFormats[fmt].internal_format;
 243       TexSrcFormat = SrcFormats[fmt].format;
 244       TexSrcType = SrcFormats[fmt].type;
 245
 246       /* loop over glTexImage, glTexSubImage */
 247       for (mode = 0; mode < MODE_COUNT; mode++) {
 248          GLuint minsz, maxsz;
 249
 250          if (SrcFormats[fmt].full_test) {
 251             minsz = 16;
 252             maxsz = 4096;
 253          }
 254          else {
 255             minsz = maxsz = 256;
 256             if (mode == MODE_CREATE_TEXIMAGE)
 257                continue;
 258          }
 259
 260          /* loop over a defined range of texture sizes, test only the
 261           * ones which are legal for this driver.
 262           */
 263          for (TexSize = minsz; TexSize <= maxsz; TexSize *= 4) {
 264             double mbPerSec;
 265
 266             if (TexSize <= maxSize) {
 267                GLint bytesPerImage;
 268
 269                bytesPerImage = TexSize * TexSize * SrcFormats[fmt].texel_size;
 270                TexImage = malloc(bytesPerImage);
 271
 272                switch (mode) {
 273                case MODE_TEXIMAGE:
 274                   rate = PerfMeasureRate(UploadTexImage2D);
 275                   break;
 276
 277                case MODE_CREATE_TEXIMAGE:
 278                   rate = PerfMeasureRate(CreateUploadTexImage2D);
 279                   break;
 280
 281                case MODE_TEXSUBIMAGE:
 282                   /* create initial, empty texture */
 283                   glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
 284                                TexSize, TexSize, 0,
 285                                TexSrcFormat, TexSrcType, NULL);
 286                   rate = PerfMeasureRate(UploadTexSubImage2D);
 287                   break;
 288
 289                case MODE_GETTEXIMAGE:
 290                   glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
 291                                TexSize, TexSize, 0,
 292                                TexSrcFormat, TexSrcType, TexImage);
 293                   rate = PerfMeasureRate(GetTexImage2D);
 294                   break;
 295
 296                default:
 297                   exit(1);
 298                }
 299
 300                mbPerSec = rate * bytesPerImage / (1024.0 * 1024.0);
 301                free(TexImage);
 302
 303
 304                {
 305                   unsigned err;
 306                   err = glGetError();
 307                   if (err) {
 308                      perf_printf("non-zero glGetError() %d\n", err);
 309                      exit(1);
 310                   }
 311                }
 312
 313             }
 314             else {
 315                rate = 0;
 316                mbPerSec = 0;
 317             }
 318
 319             perf_printf("  %s(%s %d x %d): "
 320                         "%.1f images/sec, %.1f MB/sec\n",
 321                         mode_name[mode],
 322                         SrcFormats[fmt].name, TexSize, TexSize, rate, mbPerSec);
 323          }
 324
 325          if (SrcFormats[fmt].full_test)
 326             perf_printf("\n");
 327       }
 328    }
 329
 330    exit(0);
 331 }