diff options
Diffstat (limited to 'progs/tests')
| -rw-r--r-- | progs/tests/Makefile | 1 | ||||
| -rw-r--r-- | progs/tests/copypixrate.c | 228 |
2 files changed, 229 insertions, 0 deletions
diff --git a/progs/tests/Makefile b/progs/tests/Makefile index 76cd5e27dae..49ea7477e89 100644 --- a/progs/tests/Makefile +++ b/progs/tests/Makefile @@ -24,6 +24,7 @@ SOURCES = antialias.c \ bufferobj.c \ bug_3101.c \ bug_3195.c \ + copypixrate.c \ crossbar.c \ cva.c \ dinoshade.c \ diff --git a/progs/tests/copypixrate.c b/progs/tests/copypixrate.c new file mode 100644 index 00000000000..e7620019dc7 --- /dev/null +++ b/progs/tests/copypixrate.c @@ -0,0 +1,228 @@ +/* + * Measure glCopyPixels speed + * + * Brian Paul + * 26 Jan 2006 + */ + +#define GL_GLEXT_PROTOTYPES +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <math.h> +#include <GL/glut.h> + +static GLint WinWidth = 1000, WinHeight = 800; +static GLint ImgWidth, ImgHeight; + +static GLenum Buffer = GL_FRONT; +static GLenum AlphaTest = GL_FALSE; + + +/** + * draw teapot in lower-left corner of window + */ +static void +DrawTestImage(void) +{ + GLfloat ar; + + ImgWidth = WinWidth / 3; + ImgHeight = WinHeight / 3; + + glViewport(0, 0, ImgWidth, ImgHeight); + glScissor(0, 0, ImgWidth, ImgHeight); + glEnable(GL_SCISSOR_TEST); + + glClearColor(0.5, 0.5, 0.5, 0.0); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + ar = (float) WinWidth / WinHeight; + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glFrustum(-ar, ar, -1.0, 1.0, 5.0, 25.0); + glMatrixMode(GL_MODELVIEW); + + glEnable(GL_LIGHTING); + glEnable(GL_LIGHT0); + glEnable(GL_DEPTH_TEST); + glFrontFace(GL_CW); + glPushMatrix(); + glRotatef(45, 1, 0, 0); + glutSolidTeapot(2.0); + glPopMatrix(); + glFrontFace(GL_CCW); + glDisable(GL_DEPTH_TEST); + glDisable(GL_LIGHTING); + + glDisable(GL_SCISSOR_TEST); + + glViewport(0, 0, WinWidth, WinHeight); + glFinish(); +} + + +static int +Rand(int max) +{ + return ((int) random()) % max; +} + + +/** + * Measure glCopyPixels rate + */ +static void +RunTest(void) +{ + double t1, t0 = glutGet(GLUT_ELAPSED_TIME) / 1000.0; + int iters = 0; + float copyRate, mbRate; + int r, g, b, a, bpp; + + if (AlphaTest) { + glEnable(GL_ALPHA_TEST); + glAlphaFunc(GL_GREATER, 0.0); + } + + glGetIntegerv(GL_RED_BITS, &r); + glGetIntegerv(GL_GREEN_BITS, &g); + glGetIntegerv(GL_BLUE_BITS, &b); + glGetIntegerv(GL_ALPHA_BITS, &a); + bpp = (r + g + b + a) / 8; + + do { + int x, y; + x = Rand(WinWidth); + y = Rand(WinHeight); + + if (x > ImgWidth || y > ImgHeight) { + glWindowPos2iARB(x, y); + glCopyPixels(0, 0, ImgWidth, ImgHeight, GL_COLOR); + glFinish(); /* XXX OK? */ + + iters++; + + t1 = glutGet(GLUT_ELAPSED_TIME) / 1000.0; + } + } while (t1 - t0 < 5.0); + + glDisable(GL_ALPHA_TEST); + + copyRate = iters / (t1 - t0); + mbRate = ImgWidth * ImgHeight * bpp * copyRate / (1024 * 1024); + + printf("Image size: %d x %d, %d Bpp\n", ImgWidth, ImgHeight, bpp); + printf("%d copies in %.2f = %.2f copies/sec, %.2f MB/s\n", + iters, t1-t0, copyRate, mbRate); +} + + +static void +Draw(void) +{ + glClearColor(0.0, 0.0, 0.0, 0.0); + glClearColor(0.2, 0.2, 0.8, 0); + glReadBuffer(Buffer); + glDrawBuffer(Buffer); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + DrawTestImage(); + + RunTest(); + + if (Buffer == GL_FRONT) + glFinish(); + else + glutSwapBuffers(); + + printf("exiting\n"); + exit(0); +} + + +static void +Reshape(int width, int height) +{ + glViewport(0, 0, width, height); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(0.0, 0.0, -15.0); +} + + +static void +Key(unsigned char key, int x, int y) +{ + (void) x; + (void) y; + switch (key) { + case 27: + exit(0); + break; + } + glutPostRedisplay(); +} + + +static void +SpecialKey(int key, int x, int y) +{ + (void) x; + (void) y; + switch (key) { + case GLUT_KEY_UP: + break; + case GLUT_KEY_DOWN: + break; + case GLUT_KEY_LEFT: + break; + case GLUT_KEY_RIGHT: + break; + } + glutPostRedisplay(); +} + + +static void +ParseArgs(int argc, char *argv[]) +{ + int i; + for (i = 1; i < argc; i++) { + if (strcmp(argv[i], "-back") == 0) + Buffer = GL_BACK; + else if (strcmp(argv[i], "-alpha") == 0) + AlphaTest = GL_TRUE; + } +} + + +int +main(int argc, char *argv[]) +{ + GLint mode = GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE | GLUT_DEPTH; + glutInit(&argc, argv); + + ParseArgs(argc, argv); + if (AlphaTest) + mode |= GLUT_ALPHA; + + glutInitWindowPosition(0, 0); + glutInitWindowSize(WinWidth, WinHeight); + glutInitDisplayMode(mode); + glutCreateWindow(argv[0]); + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutSpecialFunc(SpecialKey); + glutDisplayFunc(Draw); + + printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER)); + printf("Draw Buffer: %s\n", (Buffer == GL_BACK) ? "Back" : "Front"); + + glutMainLoop(); + return 0; +} |