diff options
| -rw-r--r-- | progs/perf/Makefile | 1 | ||||
| -rw-r--r-- | progs/perf/SConscript | 1 | ||||
| -rw-r--r-- | progs/perf/fbobind.c | 151 |
3 files changed, 153 insertions, 0 deletions
diff --git a/progs/perf/Makefile b/progs/perf/Makefile index e8fe720eaaa..afadcc1bdb4 100644 --- a/progs/perf/Makefile +++ b/progs/perf/Makefile @@ -15,6 +15,7 @@ LDLIBS = $(LIBS) PROG_SOURCES = \ drawoverhead.c \ + fbobind.c \ fill.c \ swapbuffers.c \ teximage.c \ diff --git a/progs/perf/SConscript b/progs/perf/SConscript index fa43d73d96a..b87b8746630 100644 --- a/progs/perf/SConscript +++ b/progs/perf/SConscript @@ -9,6 +9,7 @@ env.Prepend(LIBS = ['$GLUT_LIB']) progs = [ 'drawoverhead', + 'fbobind', 'fill', 'teximage', 'swapbuffers', diff --git a/progs/perf/fbobind.c b/progs/perf/fbobind.c new file mode 100644 index 00000000000..99a56ef2f79 --- /dev/null +++ b/progs/perf/fbobind.c @@ -0,0 +1,151 @@ +/* + * 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 rate of binding/switching between FBO targets. + * Create two framebuffer objects for rendering to two textures. + * Ping pong between texturing from one and drawing into the other. + * + * Brian Paul + * 22 Sep 2009 + */ + +#include <string.h> +#include "glmain.h" +#include "common.h" + +int WinWidth = 100, WinHeight = 100; + +static GLuint VBO; + +static GLuint FBO[2], Tex[2]; + +static const GLsizei TexSize = 512; + +static const GLboolean DrawPoint = GL_TRUE; + +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) +{ + const GLenum filter = GL_LINEAR; + GLenum stat; + int i; + + if (!PerfExtensionSupported("GL_EXT_framebuffer_object")) { + perf_printf("fboswitch: GL_EXT_framebuffer_object not supported\n"); + exit(0); + } + + /* setup VBO */ + 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); + + glGenFramebuffersEXT(2, FBO); + glGenTextures(2, Tex); + + for (i = 0; i < 2; i++) { + /* setup texture */ + glBindTexture(GL_TEXTURE_2D, Tex[i]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, + TexSize, TexSize, 0, + GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter); + + + /* setup fbo */ + glBindFramebufferEXT(GL_FRAMEBUFFER, FBO[i]); + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, Tex[i], 0/*level*/); + stat = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + if (stat != GL_FRAMEBUFFER_COMPLETE_EXT) { + perf_printf("fboswitch: Error: incomplete FBO!\n"); + exit(1); + } + + /* clear the FBO */ + glClear(GL_COLOR_BUFFER_BIT); + } +} + + +static void +FBOBind(unsigned count) +{ + unsigned i; + for (i = 1; i < count; i++) { + const GLuint dst = i & 1; + const GLuint src = 1 - dst; + + /* bind src texture */ + glBindTexture(GL_TEXTURE_2D, Tex[src]); + + /* bind dst fbo */ + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FBO[dst]); + glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); + + /* draw something */ + if (DrawPoint) + glDrawArrays(GL_POINTS, 0, 1); + } + glFinish(); +} + + +/** Called from test harness/main */ +void +PerfNextRound(void) +{ +} + + +/** Called from test harness/main */ +void +PerfDraw(void) +{ + double rate; + + rate = PerfMeasureRate(FBOBind); + perf_printf(" FBO Binding: %1.f binds/sec\n", rate); + + exit(0); +} |