TSPEED.C

/* 
 * (c) Copyright 1993, Silicon Graphics, Inc. 
 *               1993-1995 Microsoft Corporation 
 * 
 * ALL RIGHTS RESERVED 
 * 
 * Please refer to OpenGL/readme.txt for additional information 
 * 
 */ 
 
#include "glos.h" 
 
#include <stdio.h> 
#include <string.h> 
#include <stdlib.h> 
#include <gl\glaux.h> 
 
#ifdef __unix 
#include <sys/times.h> 
#include <sys/param.h> 
#endif 
#ifdef WIN32 
#include <time.h> 
#endif 
 
#define GAP 10 
#define ROWS 1 
#define COLS 4 
 
static void CALLBACK SetWindSize(int width,int height); 
static void CALLBACK Key_a(void ); 
static void CALLBACK Key_d(void ); 
static void CALLBACK Key_f(void ); 
static void CALLBACK Key_F(void ); 
static void CALLBACK Key_s(void ); 
static void CALLBACK Key_t(void ); 
static void Viewport(GLint row, GLint column); 
static double Now(void ); 
static void Report(const char *msg,float elapsed); 
static void Points(void ); 
static void Lines(void ); 
static void Triangles(void ); 
static void Rects(void ); 
static void CALLBACK Draw(void ); 
static GLenum Args(int argc,char **argv ); 
 
GLenum rgb, doubleBuffer, windType; 
GLint windW, windH; 
 
GLint boxW, boxH; 
 
GLenum antialiasing = GL_FALSE; 
GLenum depthTesting = GL_FALSE; 
GLenum fogging = GL_FALSE, niceFogging = GL_FALSE; 
GLenum lighting = GL_FALSE; 
GLenum shading = GL_FALSE; 
GLenum texturing = GL_FALSE; 
 
GLint repeatCount = 100; 
GLint loopCount = 10; 
 
GLubyte texture[4*3] = { 
    0xFF, 0, 0, 0, 0, 0, 
    0, 0, 0, 0, 0xFF, 0, 
}; 
 
 
static void CALLBACK SetWindSize(int width, int height) 
{ 
 
    windW = (GLint)width; 
    windH = (GLint)height; 
} 
 
static void CALLBACK Key_a(void) 
{ 
    antialiasing = !antialiasing; 
} 
 
static void CALLBACK Key_d(void) 
{ 
    depthTesting = !depthTesting; 
} 
 
static void CALLBACK Key_f(void) 
{ 
    fogging = !fogging; 
} 
 
static void CALLBACK Key_F(void) 
{ 
    niceFogging = !niceFogging; 
} 
 
static void CALLBACK Key_s(void) 
{ 
    shading = !shading; 
} 
 
static void CALLBACK Key_t(void) 
{ 
    texturing = !texturing; 
} 
 
static void Viewport(GLint row, GLint column) 
{ 
    GLint x, y; 
 
    boxW = (windW - (COLS + 1) * GAP) / COLS; 
    boxH = (windH - (ROWS + 1) * GAP) / ROWS; 
 
    x = GAP + column * (boxW + GAP); 
    y = GAP + row * (boxH + GAP); 
 
    glViewport(x, y, boxW, boxH); 
 
    glMatrixMode(GL_PROJECTION); 
    glLoadIdentity(); 
    gluOrtho2D(-boxW/2, boxW/2, -boxH/2, boxH/2); 
    glMatrixMode(GL_MODELVIEW); 
 
    glEnable(GL_SCISSOR_TEST); 
    glScissor(x, y, boxW, boxH); 
} 
 
static double Now(void) 
{ 
#ifdef __unix 
    struct tms tm; 
    clock_t clk; 
 
    clk = times(&tm); 
    return (double)clk / (double)HZ; 
#else 
#ifdef WIN32 
    long sec; 
 
    sec = time(NULL); 
    return(sec); 
#else 
    return 0; 
#endif 
#endif 
} 
 
static void Report(const char *msg, float elapsed) 
{ 
 
    if (elapsed == 0.0) { 
    printf("%s per second: Unknown, elapsed time is zero\n", msg); 
    } else { 
    printf("%s per second: %g\n", msg, repeatCount*loopCount/elapsed); 
    } 
} 
 
static void Points(void) 
{ 
    GLint i, j; 
    float v1[3]; 
    double start; 
 
    start = Now(); 
    for (i = 0; i < repeatCount; i++) { 
    v1[0] = 10; 
    v1[1] = 10; 
    v1[2] = 10; 
    glBegin(GL_POINTS); 
        for (j = 0; j < loopCount; j++) { 
        glVertex2fv(v1); 
        } 
    glEnd(); 
    } 
    glFinish(); 
    //Report("Points", Now()-start); 
} 
 
static void Lines(void) 
{ 
    GLint i, j; 
    float v1[3], v2[3]; 
    double start; 
 
    start = Now(); 
    for (i = 0; i < repeatCount; i++) { 
    v1[0] = 10; 
    v1[1] = 10; 
    v1[2] = 10; 
    v2[0] = 20; 
    v2[1] = 20; 
    v2[2] = 10; 
    glBegin(GL_LINES); 
        for (j = 0; j < loopCount; j++) { 
        glVertex2fv(v1); 
        glVertex2fv(v2); 
        } 
    glEnd(); 
    } 
    glFinish(); 
    //Report("Lines", Now()-start); 
} 
 
static void Triangles(void) 
{ 
    GLint i, j; 
    float v1[3], v2[3], v3[3], t1[2], t2[2], t3[2]; 
    double start; 
 
    start = Now(); 
 
    v1[0] = 10; 
    v1[1] = 10; 
    v1[2] = 10; 
    v2[0] = 20; 
    v2[1] = 20; 
    v2[2] = 10; 
    v3[0] = 10; 
    v3[1] = 20; 
    v3[2] = 10; 
 
    t1[0] = 0; 
    t1[1] = 0; 
    t2[0] = 1; 
    t2[1] = 1; 
    t3[0] = 0; 
    t3[1] = 1; 
 
    for (i = 0; i < repeatCount; i++) { 
    glBegin(GL_TRIANGLES); 
        for (j = 0; j < loopCount; j++) { 
        if (texturing) { 
            glTexCoord2fv(t1); 
        } 
        glVertex2fv(v1); 
        if (texturing) { 
            glTexCoord2fv(t2); 
        } 
        glVertex2fv(v2); 
        if (texturing) { 
            glTexCoord2fv(t3); 
        } 
        glVertex2fv(v3); 
        } 
    glEnd(); 
    } 
    glFinish(); 
    //Report("Triangles", Now()-start); 
} 
 
static void Rects(void) 
{ 
    GLint i, j; 
    float v1[2], v2[2]; 
    double start; 
 
    start = Now(); 
    for (i = 0; i < repeatCount; i++) { 
    v1[0] = 10; 
    v1[1] = 10; 
    v2[0] = 20; 
    v2[1] = 20; 
    for (j = 0; j < loopCount; j++) { 
        glRectfv(v1, v2); 
    } 
    } 
    glFinish(); 
    //Report("Rects", Now()-start); 
} 
 
static void CALLBACK Draw(void) 
{ 
    glDisable(GL_SCISSOR_TEST); 
 
    glClearColor(0.0, 0.0, 0.0, 0.0); 
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); 
 
    AUX_SETCOLOR(windType, AUX_YELLOW); 
 
    if (antialiasing) { 
    glBlendFunc(GL_SRC_ALPHA, GL_ZERO); 
    glEnable(GL_BLEND); 
 
    glEnable(GL_POINT_SMOOTH); 
    glEnable(GL_LINE_SMOOTH); 
    glEnable(GL_POLYGON_SMOOTH); 
    } 
    if (depthTesting) { 
    glEnable(GL_DEPTH_TEST); 
    } 
    if (fogging) { 
    glEnable(GL_FOG); 
    glHint(GL_FOG_HINT, (niceFogging) ? GL_NICEST : GL_FASTEST); 
    } 
    if (lighting) { 
    static GLfloat ambient[4] = {1, 0.5, 0.5, 0}; 
 
    glEnable(GL_NORMALIZE); 
    glNormal3f(1.0, 1.0, 1.0); 
    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient); 
    glEnable(GL_LIGHTING); 
    glEnable(GL_LIGHT0); 
    } 
    (shading) ? glShadeModel(GL_SMOOTH) : glShadeModel(GL_FLAT); 
    if (texturing) { 
    static GLfloat modulate[1] = {GL_DECAL}; 
    static GLfloat clamp[1] = {GL_CLAMP}; 
    static GLfloat linear[1] = {GL_LINEAR}; 
 
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 
    glTexImage2D(GL_TEXTURE_2D, 0, 3, 2, 2, 0, GL_RGB, GL_UNSIGNED_BYTE, 
             (GLvoid *)texture); 
    glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, modulate); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, clamp); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, clamp); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, linear); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, linear); 
    glEnable(GL_TEXTURE_2D); 
    } 
 
    Viewport(0, 0); Points(); 
    Viewport(0, 1); Lines(); 
    Viewport(0, 2); Triangles(); 
    Viewport(0, 3); Rects(); 
 
    glFlush(); 
 
    if (doubleBuffer) { 
    auxSwapBuffers(); 
    } 
} 
 
static GLenum Args(int argc, char **argv) 
{ 
    GLint i; 
 
    rgb = GL_TRUE; 
    doubleBuffer = GL_FALSE; 
 
 
    for (i = 1; i < argc; i++) { 
    if (strcmp(argv[i], "-ci") == 0) { 
        rgb = GL_FALSE; 
    } else if (strcmp(argv[i], "-rgb") == 0) { 
        rgb = GL_TRUE; 
    } else if (strcmp(argv[i], "-sb") == 0) { 
        doubleBuffer = GL_FALSE; 
    } else if (strcmp(argv[i], "-db") == 0) { 
        doubleBuffer = GL_TRUE; 
    } else { 
        //printf("%s (Bad option).\n", argv[i]); 
        return GL_FALSE; 
    } 
    } 
    return GL_TRUE; 
} 
 
void main(int argc, char **argv) 
{ 
 
    if (Args(argc, argv) == GL_FALSE) { 
    auxQuit(); 
    } 
 
    windW = 600; 
    windH = 300; 
    auxInitPosition(0, 0, windW, windH); 
 
    windType = AUX_DEPTH16; 
    windType |= (rgb) ? AUX_RGB : AUX_INDEX; 
    windType |= (doubleBuffer) ? AUX_DOUBLE : AUX_SINGLE; 
 
    auxInitDisplayMode(windType); 
 
    if (auxInitWindow("Speed Test") == GL_FALSE) { 
    auxQuit(); 
    } 
 
    auxExposeFunc((AUXEXPOSEPROC)SetWindSize); 
    auxReshapeFunc((AUXRESHAPEPROC)SetWindSize); 
    auxKeyFunc(AUX_a, Key_a); 
    auxKeyFunc(AUX_d, Key_d); 
    auxKeyFunc(AUX_f, Key_f); 
    auxKeyFunc(AUX_F, Key_F); 
    auxKeyFunc(AUX_s, Key_s); 
    auxKeyFunc(AUX_t, Key_t); 
    auxMainLoop(Draw); 
}