+++ /dev/null
-
-/*
- * Simple GLUT program to measure triangle strip rendering speed.
- * Brian Paul February 15, 1997 This file is in the 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 float Width = 400.0;
-static float Height = 400.0;
-static int Loops = 1;
-static int Size = 50;
-static int Texture = 0;
-
-
-
-static void Idle( void )
-{
- glutPostRedisplay();
-}
-
-
-static void Display( void )
-{
- float x, y;
- float xStep;
- float yStep;
- double t0, t1;
- double triRate;
- double pixelRate;
- int triCount;
- int i;
- float red[3] = { 1.0, 0.0, 0.0 };
- float blue[3] = { 0.0, 0.0, 1.0 };
-
- xStep = yStep = sqrt( 2.0 * Size );
-
- glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
-
- triCount = 0;
- t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- if (Texture) {
- float uStep = xStep / Width;
- float vStep = yStep / Height;
- float u, v;
- for (i=0; i<Loops; i++) {
- for (y=1.0, v=0.0f; y<Height-yStep; y+=yStep, v+=vStep) {
- glBegin(GL_TRIANGLE_STRIP);
- for (x=1.0, u=0.0f; x<Width; x+=xStep, u+=uStep) {
- glColor3fv(red);
- glTexCoord2f(u, v);
- glVertex2f(x, y);
- glColor3fv(blue);
- glTexCoord2f(u, v+vStep);
- glVertex2f(x, y+yStep);
- triCount += 2;
- }
- glEnd();
- triCount -= 2;
- }
- }
- }
- else {
- for (i=0; i<Loops; i++) {
- for (y=1.0; y<Height-yStep; y+=yStep) {
- glBegin(GL_TRIANGLE_STRIP);
- for (x=1.0; x<Width; x+=xStep) {
- glColor3fv(red);
- glVertex2f(x, y);
- glColor3fv(blue);
- glVertex2f(x, y+yStep);
- triCount += 2;
- }
- glEnd();
- triCount -= 2;
- }
- }
- }
- glFinish();
- t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
-
- if (t1-t0 < MinPeriod) {
- /* Next time draw more triangles to get longer elapsed time */
- Loops *= 2;
- return;
- }
-
- triRate = triCount / (t1-t0);
- pixelRate = triRate * Size;
- printf("Rate: %d tri in %gs = %g tri/s %d pixels/s\n",
- triCount, t1-t0, triRate, (int)pixelRate);
-
- glutSwapBuffers();
-}
-
-
-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 LoadTex(int comp, int filter)
-{
- GLubyte *pixels;
- int x, y;
- pixels = (GLubyte *) malloc(4*256*256);
- for (y = 0; y < 256; ++y)
- for (x = 0; x < 256; ++x) {
- pixels[(y*256+x)*4+0] = (int)(128.5 + 127.0 * cos(0.024544 * x));
- pixels[(y*256+x)*4+1] = 255;
- pixels[(y*256+x)*4+2] = (int)(128.5 + 127.0 * cos(0.024544 * y));
- pixels[(y*256+x)*4+3] = 255;
- }
- glEnable(GL_TEXTURE_2D);
- glTexImage2D(GL_TEXTURE_2D, 0, comp, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- printf("Texture: GL_MODULATE, %d comps, %s\n", comp, filter == GL_NEAREST ? "GL_NEAREST" : "GL_LINEAR");
-}
-
-
-static void Init( int argc, char *argv[] )
-{
- GLint shade;
- GLint rBits, gBits, bBits;
- int filter = GL_NEAREST, comp = 3;
-
- int i;
- for (i=1; i<argc; i++) {
- if (strcmp(argv[i],"-dither")==0)
- glDisable(GL_DITHER);
- else if (strcmp(argv[i],"+dither")==0)
- glEnable(GL_DITHER);
- else if (strcmp(argv[i],"+smooth")==0)
- glShadeModel(GL_SMOOTH);
- else if (strcmp(argv[i],"+flat")==0)
- glShadeModel(GL_FLAT);
- else if (strcmp(argv[i],"+depth")==0)
- glEnable(GL_DEPTH_TEST);
- else if (strcmp(argv[i],"-depth")==0)
- glDisable(GL_DEPTH_TEST);
- else if (strcmp(argv[i],"-size")==0) {
- Size = atoi(argv[i+1]);
- i++;
- }
- else if (strcmp(argv[i],"-texture")==0)
- Texture = 0;
- else if (strcmp(argv[i],"+texture")==0)
- Texture = 1;
- else if (strcmp(argv[i],"-linear")==0)
- filter = GL_NEAREST;
- else if (strcmp(argv[i],"+linear")==0)
- filter = GL_LINEAR;
- else if (strcmp(argv[i],"-persp")==0)
- glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
- else if (strcmp(argv[i],"+persp")==0)
- glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
- else if (strcmp(argv[i],"-comp")==0) {
- comp = atoi(argv[i+1]);
- i++;
- }
- else
- printf("Unknown option: %s\n", argv[i]);
- }
-
- glGetIntegerv(GL_SHADE_MODEL, &shade);
-
- printf("Dither: %s\n", glIsEnabled(GL_DITHER) ? "on" : "off");
- printf("ShadeModel: %s\n", (shade==GL_FLAT) ? "flat" : "smooth");
- printf("DepthTest: %s\n", glIsEnabled(GL_DEPTH_TEST) ? "on" : "off");
- printf("Size: %d pixels\n", Size);
-
- if (Texture)
- LoadTex(comp, filter);
-
- glGetIntegerv(GL_RED_BITS, &rBits);
- glGetIntegerv(GL_GREEN_BITS, &gBits);
- glGetIntegerv(GL_BLUE_BITS, &bBits);
- printf("RedBits: %d GreenBits: %d BlueBits: %d\n", rBits, gBits, bBits);
-}
-
-
-static void Help( const char *program )
-{
- printf("%s options:\n", program);
- printf(" +/-dither enable/disable dithering\n");
- printf(" +/-depth enable/disable depth test\n");
- printf(" +flat flat shading\n");
- printf(" +smooth smooth shading\n");
- printf(" -size pixels specify pixels/triangle\n");
- printf(" +/-texture enable/disable texture\n");
- printf(" -comp n texture format\n");
- printf(" +/-linear bilinear texture filter\n");
- printf(" +/-persp perspective correction hint\n");
-}
-
-
-int main( int argc, char *argv[] )
-{
- glutInitWindowSize( (int) Width, (int) Height );
- glutInit( &argc, argv );
- glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
- glutCreateWindow( argv[0] );
-
- printf("For options: %s -help\n", argv[0]);
- if (argc==2 && strcmp(argv[1],"-help")==0) {
- Help(argv[0]);
- return 0;
- }
-
- Init( argc, argv );
-
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutDisplayFunc( Display );
- glutIdleFunc( Idle );
-
- glutMainLoop();
- return 0;
-}
projects / mesa.git / blobdiff