+++ /dev/null
-
-/*
- * Simple GLUT program to measure glClear() and glutSwapBuffers() speed.
- * Brian Paul February 15, 1997 This file in public domain.
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#include <GL/glut.h>
-
-
-static float MinPeriod = 2.0; /* 2 seconds */
-static int ColorMode = GLUT_RGB;
-static int Width = 400.0;
-static int Height = 400.0;
-static int Loops = 100;
-static float ClearColor = 0.0;
-static GLbitfield BufferMask = GL_COLOR_BUFFER_BIT;
-static GLboolean SwapFlag = GL_FALSE;
-
-
-
-static void Idle( void )
-{
- glutPostRedisplay();
-}
-
-
-static void Display( void )
-{
- double t0, t1;
- double clearRate;
- double pixelRate;
- int i;
-
- glClearColor( ClearColor, ClearColor, ClearColor, 0.0 );
- ClearColor += 0.1;
- if (ClearColor>1.0)
- ClearColor = 0.0;
-
- if (SwapFlag) {
- t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- for (i=0;i<Loops;i++) {
- glClear( BufferMask );
- glutSwapBuffers();
- }
- glFinish();
- t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- }
- else {
- t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- for (i=0;i<Loops;i++) {
- glClear( BufferMask );
- }
- glFinish();
- t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- glutSwapBuffers();
- }
-
- /* NOTE: If clearspd doesn't map it's window immediately on
- * starting, swaps will be istantaneous, so this will send Loops
- * towards infinity. When a window is finally mapped, it may be
- * minutes before the first call to glutSwapBuffers, making it look
- * like there's a driver bug.
- */
- if (t1-t0 < MinPeriod) {
- /* Next time do more clears to get longer elapsed time */
- Loops *= 2;
- return;
- }
-
- clearRate = Loops / (t1-t0);
- pixelRate = clearRate * Width * Height;
- if (SwapFlag) {
- printf("Rate: %d clears+swaps in %gs = %g clears+swaps/s %g pixels/s\n",
- Loops, t1-t0, clearRate, pixelRate );
- }
- else {
- printf("Rate: %d clears in %gs = %g clears/s %g pixels/s\n",
- Loops, t1-t0, clearRate, pixelRate);
- }
-}
-
-
-static void Reshape( int width, int height )
-{
- Width = width;
- Height = height;
- glViewport( 0, 0, width, height );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
- glOrtho(0.0, width, 0.0, height, -1.0, 1.0);
- glMatrixMode( GL_MODELVIEW );
- glLoadIdentity();
-}
-
-
-static void Key( unsigned char key, int x, int y )
-{
- (void) x;
- (void) y;
- switch (key) {
- case 27:
- exit(0);
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void Init( int argc, char *argv[] )
-{
- int i;
- for (i=1; i<argc; i++) {
- if (strcmp(argv[i],"+rgb")==0)
- ColorMode = GLUT_RGB;
- else if (strcmp(argv[i],"+ci")==0)
- ColorMode = GLUT_INDEX;
- else if (strcmp(argv[i],"-color")==0)
- BufferMask = 0;
- else if (strcmp(argv[i],"+depth")==0)
- BufferMask |= GL_DEPTH_BUFFER_BIT;
- else if (strcmp(argv[i],"+alpha")==0)
- ColorMode = GLUT_RGB | GLUT_ALPHA;
- else if (strcmp(argv[i],"+stencil")==0)
- BufferMask |= GL_STENCIL_BUFFER_BIT;
- else if (strcmp(argv[i],"+accum")==0)
- BufferMask |= GL_ACCUM_BUFFER_BIT;
- else if (strcmp(argv[i],"-width")==0) {
- Width = atoi(argv[i+1]);
- i++;
- }
- else if (strcmp(argv[i],"-height")==0) {
- Height = atoi(argv[i+1]);
- i++;
- }
- else if (strcmp(argv[i],"+swap")==0) {
- SwapFlag = GL_TRUE;
- }
- else if (strcmp(argv[i],"-swap")==0) {
- SwapFlag = GL_FALSE;
- }
- else
- printf("Unknown option: %s\n", argv[i]);
- }
-
- if (ColorMode & GLUT_ALPHA)
- printf("Mode: RGB + Alpha\n");
- else if (ColorMode==GLUT_RGB)
- printf("Mode: RGB\n");
- else
- printf("Mode: Color Index\n");
- printf("SwapBuffers: %s\n", SwapFlag ? "yes" : "no" );
- printf("Size: %d x %d\n", Width, Height);
- printf("Buffers: ");
- if (BufferMask & GL_COLOR_BUFFER_BIT) printf("color ");
- if (BufferMask & GL_DEPTH_BUFFER_BIT) printf("depth ");
- if (BufferMask & GL_STENCIL_BUFFER_BIT) printf("stencil ");
- if (BufferMask & GL_ACCUM_BUFFER_BIT) printf("accum ");
- printf("\n");
-}
-
-
-static void Help( const char *program )
-{
- printf("%s options:\n", program);
- printf(" +rgb RGB mode\n");
- printf(" +ci color index mode\n");
- printf(" -color don't clear color buffer\n");
- printf(" +alpha clear alpha buffer\n");
- printf(" +depth clear depth buffer\n");
- printf(" +stencil clear stencil buffer\n");
- printf(" +accum clear accum buffer\n");
- printf(" +swap also do SwapBuffers\n");
- printf(" -swap don't do SwapBuffers\n");
-}
-
-
-int main( int argc, char *argv[] )
-{
- GLint mode;
-
- printf("For options: %s -help\n", argv[0]);
-
- Init( argc, argv );
-
- glutInitWindowSize( (int) Width, (int) Height );
- glutInit( &argc, argv );
-
- mode = ColorMode | GLUT_DOUBLE;
- if (BufferMask & GL_STENCIL_BUFFER_BIT)
- mode |= GLUT_STENCIL;
- if (BufferMask & GL_ACCUM_BUFFER_BIT)
- mode |= GLUT_ACCUM;
- if (BufferMask & GL_DEPTH_BUFFER_BIT)
- mode |= GLUT_DEPTH;
-
- glutInitDisplayMode(mode);
-
- glutCreateWindow( argv[0] );
-
- if (argc==2 && strcmp(argv[1],"-help")==0) {
- Help(argv[0]);
- return 0;
- }
-
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutDisplayFunc( Display );
- glutIdleFunc( Idle );
-
- glutMainLoop();
- return 0;
-}
projects / mesa.git / blobdiff