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mesa/progs/perf/teximage.c

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/*
* 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 glTex[Sub]Image2D() and glGetTexImage() rate
*
* Brian Paul
* 16 Sep 2009
*/
#include "glmain.h"
#include "common.h"
int WinWidth = 100, WinHeight = 100;
static GLuint VBO;
static GLuint TexObj = 0;
static GLubyte *TexImage = NULL;
static GLsizei TexSize;
static GLenum TexIntFormat, TexSrcFormat, TexSrcType;
static const GLboolean DrawPoint = GL_TRUE;
static const GLboolean TexSubImage4 = GL_FALSE;
enum {
MODE_CREATE_TEXIMAGE,
MODE_TEXIMAGE,
MODE_TEXSUBIMAGE,
MODE_GETTEXIMAGE,
MODE_COUNT
};
static const char *mode_name[MODE_COUNT] =
{
"Create_TexImage",
"TexImage",
"TexSubImage",
"GetTexImage"
};
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);
/* texture */
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
CreateUploadTexImage2D(unsigned count)
{
unsigned i;
for (i = 0; i < count; i++) {
if (TexObj)
glDeleteTextures(1, &TexObj);
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);
glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
TexSize, TexSize, 0,
TexSrcFormat, TexSrcType, TexImage);
if (DrawPoint)
glDrawArrays(GL_POINTS, 0, 1);
}
glFinish();
}
static void
UploadTexImage2D(unsigned count)
{
unsigned i;
for (i = 0; i < count; i++) {
/* XXX is this equivalent to a glTexSubImage call since we're
* always specifying the same image size? That case isn't optimized
* in Mesa but may be optimized in other drivers. Note sure how
* much difference that might make.
*/
glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
TexSize, TexSize, 0,
TexSrcFormat, TexSrcType, TexImage);
if (DrawPoint)
glDrawArrays(GL_POINTS, 0, 1);
}
glFinish();
}
static void
UploadTexSubImage2D(unsigned count)
{
unsigned i;
for (i = 0; i < count; i++) {
if (TexSubImage4) {
GLsizei halfSize = (TexSize == 1) ? 1 : TexSize / 2;
GLsizei halfPos = TexSize - halfSize;
/* do glTexSubImage2D in four pieces */
/* lower-left */
glPixelStorei(GL_UNPACK_ROW_LENGTH, TexSize);
glTexSubImage2D(GL_TEXTURE_2D, 0,
0, 0, halfSize, halfSize,
TexSrcFormat, TexSrcType, TexImage);
/* lower-right */
glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
glTexSubImage2D(GL_TEXTURE_2D, 0,
halfPos, 0, halfSize, halfSize,
TexSrcFormat, TexSrcType, TexImage);
/* upper-left */
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
glTexSubImage2D(GL_TEXTURE_2D, 0,
0, halfPos, halfSize, halfSize,
TexSrcFormat, TexSrcType, TexImage);
/* upper-right */
glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
glTexSubImage2D(GL_TEXTURE_2D, 0,
halfPos, halfPos, halfSize, halfSize,
TexSrcFormat, TexSrcType, TexImage);
/* reset the unpacking state */
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
else {
/* replace whole texture image at once */
glTexSubImage2D(GL_TEXTURE_2D, 0,
0, 0, TexSize, TexSize,
TexSrcFormat, TexSrcType, TexImage);
}
if (DrawPoint)
glDrawArrays(GL_POINTS, 0, 1);
}
glFinish();
}
static void
GetTexImage2D(unsigned count)
{
unsigned i;
GLubyte *buf = (GLubyte *) malloc(TexSize * TexSize * 4);
for (i = 0; i < count; i++) {
glGetTexImage(GL_TEXTURE_2D, 0,
TexSrcFormat, TexSrcType, buf);
}
glFinish();
free(buf);
}
/* XXX any other formats to measure? */
static const struct {
GLenum format, type;
GLenum internal_format;
const char *name;
GLuint texel_size;
GLboolean full_test;
} SrcFormats[] = {
{ GL_RGBA, GL_UNSIGNED_BYTE, GL_RGBA, "RGBA/ubyte", 4, GL_TRUE },
{ GL_RGB, GL_UNSIGNED_BYTE, GL_RGB, "RGB/ubyte", 3, GL_FALSE },
{ GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_RGB, "RGB/565", 2, GL_FALSE },
{ GL_BGRA, GL_UNSIGNED_BYTE, GL_RGBA, "BGRA/ubyte", 4, GL_FALSE },
{ GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_LUMINANCE, "L/ubyte", 1, GL_FALSE },
{ 0, 0, 0, NULL, 0, 0 }
};
/** Called from test harness/main */
void
PerfNextRound(void)
{
}
/** Called from test harness/main */
void
PerfDraw(void)
{
GLint maxSize;
double rate;
GLint fmt, mode;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
/* loop over source data formats */
for (fmt = 0; SrcFormats[fmt].format; fmt++) {
TexIntFormat = SrcFormats[fmt].internal_format;
TexSrcFormat = SrcFormats[fmt].format;
TexSrcType = SrcFormats[fmt].type;
/* loop over glTexImage, glTexSubImage */
for (mode = 0; mode < MODE_COUNT; mode++) {
GLuint minsz, maxsz;
if (SrcFormats[fmt].full_test) {
minsz = 16;
maxsz = 4096;
}
else {
minsz = maxsz = 256;
if (mode == MODE_CREATE_TEXIMAGE)
continue;
}
/* loop over a defined range of texture sizes, test only the
* ones which are legal for this driver.
*/
for (TexSize = minsz; TexSize <= maxsz; TexSize *= 4) {
double mbPerSec;
if (TexSize <= maxSize) {
GLint bytesPerImage;
bytesPerImage = TexSize * TexSize * SrcFormats[fmt].texel_size;
TexImage = malloc(bytesPerImage);
switch (mode) {
case MODE_TEXIMAGE:
rate = PerfMeasureRate(UploadTexImage2D);
break;
case MODE_CREATE_TEXIMAGE:
rate = PerfMeasureRate(CreateUploadTexImage2D);
break;
case MODE_TEXSUBIMAGE:
/* create initial, empty texture */
glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
TexSize, TexSize, 0,
TexSrcFormat, TexSrcType, NULL);
rate = PerfMeasureRate(UploadTexSubImage2D);
break;
case MODE_GETTEXIMAGE:
glTexImage2D(GL_TEXTURE_2D, 0, TexIntFormat,
TexSize, TexSize, 0,
TexSrcFormat, TexSrcType, TexImage);
rate = PerfMeasureRate(GetTexImage2D);
break;
default:
exit(1);
}
mbPerSec = rate * bytesPerImage / (1024.0 * 1024.0);
free(TexImage);
{
unsigned err;
err = glGetError();
if (err) {
perf_printf("non-zero glGetError() %d\n", err);
exit(1);
}
}
}
else {
rate = 0;
mbPerSec = 0;
}
perf_printf(" %s(%s %d x %d): "
"%.1f images/sec, %.1f MB/sec\n",
mode_name[mode],
SrcFormats[fmt].name, TexSize, TexSize, rate, mbPerSec);
}
if (SrcFormats[fmt].full_test)
perf_printf("\n");
}
}
exit(0);
}
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