diff options
Diffstat (limited to 'progs/perf')
| -rw-r--r-- | progs/perf/Makefile | 1 | ||||
| -rw-r--r-- | progs/perf/SConscript | 3 | ||||
| -rw-r--r-- | progs/perf/readpixels.c | 169 |
3 files changed, 172 insertions, 1 deletions
diff --git a/progs/perf/Makefile b/progs/perf/Makefile index f078082685b..043e91d669b 100644 --- a/progs/perf/Makefile +++ b/progs/perf/Makefile @@ -18,6 +18,7 @@ PROG_SOURCES = \ drawoverhead.c \ fbobind.c \ fill.c \ + readpixels.c \ swapbuffers.c \ teximage.c \ vbo.c \ diff --git a/progs/perf/SConscript b/progs/perf/SConscript index acd6564e14a..224928bf98b 100644 --- a/progs/perf/SConscript +++ b/progs/perf/SConscript @@ -12,8 +12,9 @@ progs = [ 'drawoverhead', 'fbobind', 'fill', - 'teximage', + "readpixels', 'swapbuffers', + 'teximage', 'vbo', 'vertexrate', ] diff --git a/progs/perf/readpixels.c b/progs/perf/readpixels.c new file mode 100644 index 00000000000..3772b2cf3ed --- /dev/null +++ b/progs/perf/readpixels.c @@ -0,0 +1,169 @@ +/* + * 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 glReadPixels speed. + * XXX also read into a PBO? + * XXX also read from FBOs? + * + * Brian Paul + * 23 Sep 2009 + */ + +#include <string.h> +#include <assert.h> +#include "glmain.h" +#include "common.h" + +int WinWidth = 1000, WinHeight = 1000; + +static GLuint VBO; + +static const GLboolean DrawPoint = GL_TRUE; +static const GLboolean BufferSubDataInHalves = GL_TRUE; + +static const GLfloat Vertex0[2] = { 0.0, 0.0 }; + +static GLenum HaveDepthStencil; + +static GLenum ReadFormat, ReadType; +static GLint ReadWidth, ReadHeight; +static GLvoid *ReadBuffer; + + +/** Called from test harness/main */ +void +PerfInit(void) +{ + /* setup VBO */ + glGenBuffersARB(1, &VBO); + glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO); + glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(Vertex0), Vertex0, GL_STATIC_DRAW_ARB); + glVertexPointer(2, GL_FLOAT, sizeof(Vertex0), (void *) 0); + glEnableClientState(GL_VERTEX_ARRAY); + + glPixelStorei(GL_PACK_ALIGNMENT, 1); + + HaveDepthStencil = PerfExtensionSupported("GL_EXT_packed_depth_stencil"); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); + glEnable(GL_DEPTH_TEST); + glEnable(GL_STENCIL_TEST); +} + + +static void +ReadPixels(unsigned count) +{ + unsigned i; + for (i = 0; i < count; i++) { + /* read from random pos */ + GLint x, y; + + x = WinWidth - ReadWidth; + y = WinHeight - ReadHeight; + if (x > 0) + x = rand() % x; + if (y > 0) + y = rand() % y; + + if (DrawPoint) + glDrawArrays(GL_POINTS, 0, 1); + + glReadPixels(x, y, ReadWidth, ReadHeight, + ReadFormat, ReadType, ReadBuffer); + } + glFinish(); +} + + +static const GLsizei Sizes[] = { + 10, + 100, + 500, + 1000, + 0 +}; + + +static const struct { + GLenum format, type; + const char *name; + GLuint pixel_size; + GLboolean full_test; +} DstFormats[] = { + { GL_RGBA, GL_UNSIGNED_BYTE, "RGBA/ubyte", 4 }, + { GL_BGRA, GL_UNSIGNED_BYTE, "BGRA/ubyte", 4 }, + { GL_RGB, GL_UNSIGNED_SHORT_5_6_5, "RGB/565", 2 }, + { GL_LUMINANCE, GL_UNSIGNED_BYTE, "L/ubyte", 1 }, + { GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, "Z/uint", 4 }, + { GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT, "Z+S/uint", 4 }, + { 0, 0, NULL, 0, 0 } +}; + + + +/** Called from test harness/main */ +void +PerfNextRound(void) +{ +} + + +/** Called from test harness/main */ +void +PerfDraw(void) +{ + double rate, mbPerSec; + int fmt, sz; + + /* loop over formats */ + for (fmt = 0; DstFormats[fmt].format; fmt++) { + ReadFormat = DstFormats[fmt].format; + ReadType = DstFormats[fmt].type; + + /* loop over sizes */ + for (sz = 0; Sizes[sz]; sz++) { + int imgSize; + + ReadWidth = ReadHeight = Sizes[sz]; + imgSize = ReadWidth * ReadHeight * DstFormats[fmt].pixel_size; + ReadBuffer = malloc(imgSize); + + if (ReadFormat == GL_DEPTH_STENCIL_EXT && !HaveDepthStencil) { + rate = 0.0; + mbPerSec = 0.0; + } + else { + rate = PerfMeasureRate(ReadPixels); + mbPerSec = rate * imgSize / (1024.0 * 1024.0); + } + + perf_printf("glReadPixels(%d x %d, %s): %.1f images/sec, %.1f Mpixels/sec\n", + ReadWidth, ReadHeight, + DstFormats[fmt].name, rate, mbPerSec); + + free(ReadBuffer); + } + } + + exit(0); +} |