fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-27 10:30:08 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

big overhaul of the demo, works better now

Browse source
This commit is contained in:
Brian Paul 2000-10-30 22:38:55 +00:00
parent 365dc68c39
commit efeddebe81
1 changed files with 86 additions and 113 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

199
progs/samples/sphere.c
View file

@ -29,28 +29,18 @@
#include <math.h>
#include <stdlib.h>
#include <GL/glut.h>
#include "../util/readtex.c"
#define FALSE 0
#define TRUE 1
#ifndef PI
#define PI 3.14159265358979323846
#endif
#include "loadppm.c"
int rgb; /* unused */
#include "tkmap.c"
GLenum doubleBuffer;
int W = 400, H = 400;
char *imageFileName = 0;
PPMImage *image;
int numComponents;
char *imageFileName = "../images/reflect.rgb";
float *minFilter, *magFilter, *sWrapMode, *tWrapMode;
float decal[] = {GL_DECAL};
@ -66,18 +56,13 @@ float linear_mipmap_linear[] = {GL_LINEAR_MIPMAP_LINEAR};
GLint sphereMap[] = {GL_SPHERE_MAP};
float xRotation = 0.0, yRotation = 0.0;
float zTranslate = -4.0;
GLenum autoRotate = TRUE;
GLenum deepestColor = COLOR_GREEN;
GLenum isLit = TRUE;
GLenum isFogged = FALSE;
float zTranslate = -3.0;
GLenum autoRotate = GL_TRUE;
GLboolean isLit = GL_TRUE;
GLboolean isFogged = GL_FALSE;
GLboolean doTexture = GL_TRUE;
float *textureEnvironment = modulate;
struct MipMap {
int width, height;
unsigned char *data;
};
int cube, cage, cylinder, torus, genericObject;
float c[6][4][4][3] = {
@ -661,18 +646,6 @@ void BuildLists(void)
genericObject = torus;
}
void SetDeepestColor(void)
{
GLint redBits, greenBits, blueBits;
glGetIntegerv(GL_RED_BITS, &redBits);
glGetIntegerv(GL_GREEN_BITS, &greenBits);
glGetIntegerv(GL_BLUE_BITS, &blueBits);
deepestColor = (redBits >= greenBits) ? COLOR_RED : COLOR_GREEN;
deepestColor = (deepestColor >= blueBits) ? deepestColor : COLOR_BLUE;
}
void SetDefaultSettings(void)
{
@ -681,7 +654,7 @@ void SetDefaultSettings(void)
sWrapMode = repeat;
tWrapMode = repeat;
textureEnvironment = modulate;
autoRotate = TRUE;
autoRotate = GL_TRUE;
}
unsigned char *AlphaPadImage(int bufSize, unsigned char *inData, int alpha)
@ -707,46 +680,46 @@ unsigned char *AlphaPadImage(int bufSize, unsigned char *inData, int alpha)
void Init(void)
{
float ambient[] = {0.0, 0.0, 0.0, 1.0};
float diffuse[] = {0.0, 1.0, 0.0, 1.0};
float diffuse[] = {1.0, 1.0, 1.0, 1.0};
float specular[] = {1.0, 1.0, 1.0, 1.0};
float position[] = {2.0, 2.0, 0.0, 1.0};
float position[] = {0.0, 0.0, 4.0, 0.0};
float fog_color[] = {0.0, 0.0, 0.0, 1.0};
float mat_ambient[] = {0.0, 0.0, 0.0, 1.0};
float mat_shininess[] = {90.0};
float mat_specular[] = {1.0, 1.0, 1.0, 1.0};
float mat_diffuse[] = {1.0, 1.0, 1.0, 1.0};
float lmodel_ambient[] = {0.0, 0.0, 0.0, 1.0};
float mat_diffuse[] = {0.8, 0.8, 0.8, 1.0};
float lmodel_ambient[] = {0.2, 0.2, 0.2, 1.0};
float lmodel_twoside[] = {GL_TRUE};
int w, h;
GLenum format;
char *image;
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
SetDeepestColor();
SetDefaultSettings();
if (numComponents == 4) {
image = LoadPPM(imageFileName);
image->data = AlphaPadImage(image->sizeX*image->sizeY,
image->data, 128);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents,
image->sizeX, image->sizeY,
GL_RGBA, GL_UNSIGNED_BYTE, image->data);
} else {
image = LoadPPM(imageFileName);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents,
image->sizeX, image->sizeY,
GL_RGB, GL_UNSIGNED_BYTE, image->data);
image = LoadRGBImage(imageFileName, &w, &h, &format);
if (!image) {
printf("Error: couldn't load %s\n", imageFileName);
exit(1);
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
gluBuild2DMipmaps(GL_TEXTURE_2D, format, w, h,
GL_RGB, GL_UNSIGNED_BYTE, image);
free(image);
glFogf(GL_FOG_DENSITY, 0.125);
glFogi(GL_FOG_MODE, GL_LINEAR);
glFogf(GL_FOG_START, 4.0);
glFogf(GL_FOG_END, 9.0);
glFogf(GL_FOG_END, 8.5);
glFogfv(GL_FOG_COLOR, fog_color);
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
glLightfv(GL_LIGHT0, GL_POSITION, position);
glEnable(GL_LIGHT0);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
@ -757,18 +730,14 @@ void Init(void)
glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
glShadeModel(GL_SMOOTH);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glClearColor(0.0, 0.0, 0.0, 0.0);
glViewport(0, 0, W, H);
glEnable(GL_DEPTH_TEST);
glFrontFace(GL_CW);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_TEXTURE_2D);
glTexGeniv(GL_S, GL_TEXTURE_GEN_MODE, sphereMap);
glTexGeniv(GL_T, GL_TEXTURE_GEN_MODE, sphereMap);
glEnable(GL_TEXTURE_GEN_S);
@ -786,15 +755,18 @@ void Init(void)
void ReInit(void)
{
if (genericObject == torus) {
glEnable(GL_DEPTH_TEST);
} else {
glDisable(GL_DEPTH_TEST);
}
glEnable(GL_DEPTH_TEST);
#if 0
if (isFogged) {
textureEnvironment = modulate;
}
#endif
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter);
@ -803,59 +775,54 @@ void ReInit(void)
void Draw(void)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-0.2, 0.2, -0.2, 0.2, 0.15, 9.0);
glMatrixMode(GL_MODELVIEW);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
if (isFogged) {
/* draw cage */
if (isFogged)
glEnable(GL_FOG);
glColor3fv(RGBMap[deepestColor]);
} else {
glColor3fv(RGBMap[COLOR_WHITE]);
}
else
glDisable(GL_FOG);
glColor3f(1, 1, 1);
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
glDisable(GL_TEXTURE_2D);
glCallList(cage);
glPushMatrix();
glTranslatef(0.0, 0.0, zTranslate);
glRotatef(xRotation, 1, 0, 0);
glRotatef(yRotation, 0, 1, 0);
if (isLit == TRUE) {
/* draw object */
if (isLit)
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
glEnable(GL_TEXTURE_2D);
if (isFogged) {
glDisable(GL_FOG);
}
glPolygonMode(GL_FRONT, GL_FILL);
glColor3fv(RGBMap[deepestColor]);
glCallList(genericObject);
else
glColor3f(1.0, 0.5, 0.2);
if (doTexture)
glEnable(GL_TEXTURE_2D);
glPushMatrix();
glTranslatef(0.0, 0.0, zTranslate);
glRotatef(xRotation, 1, 0, 0);
glRotatef(yRotation, 0, 1, 0);
glCallList(genericObject);
glPopMatrix();
glFlush();
if (autoRotate) {
xRotation += .75;
yRotation += .375;
}
glFlush();
glutSwapBuffers();
}
void Reshape(int width, int height)
{
W = width;
H = height;
ReInit();
glViewport( 0, 0, width, height ); /*new*/
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-0.2, 0.2, -0.2, 0.2, 0.15, 9.0);
glMatrixMode(GL_MODELVIEW);
}
void Idle(void)
{
xRotation += .75;
yRotation += .375;
glutPostRedisplay();
}
void Key2(int key, int x, int y)
@ -864,27 +831,28 @@ void Key2(int key, int x, int y)
switch (key) {
case GLUT_KEY_LEFT:
yRotation -= 0.5;
autoRotate = FALSE;
autoRotate = GL_FALSE;
ReInit();
break;
case GLUT_KEY_RIGHT:
yRotation += 0.5;
autoRotate = FALSE;
autoRotate = GL_FALSE;
ReInit();
break;
case GLUT_KEY_UP:
xRotation -= 0.5;
autoRotate = FALSE;
autoRotate = GL_FALSE;
ReInit();
break;
case GLUT_KEY_DOWN:
xRotation += 0.5;
autoRotate = FALSE;
autoRotate = GL_FALSE;
ReInit();
break;
default:
return;
}
glutPostRedisplay();
}
void Key(unsigned char key, int x, int y)
@ -892,15 +860,28 @@ void Key(unsigned char key, int x, int y)
switch (key) {
case 27:
free(image->data);
/* free(image->data);*/
exit(1);
case 'a':
autoRotate = !autoRotate;
if (autoRotate)
glutIdleFunc(Idle);
else
glutIdleFunc(NULL);
ReInit();
break;
case 'c':
genericObject = (genericObject == cube) ? cylinder : cube;
case 'o':
if (genericObject == cube) {
genericObject = cylinder;
}
else if (genericObject == cylinder) {
genericObject = torus;
}
else {
genericObject = cube;
}
ReInit();
break;
case 'd':
@ -913,6 +894,7 @@ void Key(unsigned char key, int x, int y)
break;
case 'l':
isLit = !isLit;
printf("lit %d\n", isLit);
ReInit();
break;
case 'f':
@ -920,7 +902,7 @@ void Key(unsigned char key, int x, int y)
ReInit();
break;
case 't':
genericObject = torus;
doTexture = !doTexture;
ReInit();
break;
case '0':
@ -958,6 +940,7 @@ void Key(unsigned char key, int x, int y)
default:
return;
}
glutPostRedisplay();
}
GLenum Args(int argc, char **argv)
@ -965,7 +948,6 @@ GLenum Args(int argc, char **argv)
GLint i;
doubleBuffer = GL_TRUE;
numComponents = 4;
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-sb") == 0) {
@ -979,10 +961,6 @@ GLenum Args(int argc, char **argv)
} else {
imageFileName = argv[++i];
}
} else if (strcmp(argv[i], "-4") == 0) {
numComponents = 4;
} else if (strcmp(argv[i], "-3") == 0) {
numComponents = 3;
} else {
printf("%s (Bad option).\n", argv[i]);
return GL_FALSE;
@ -991,11 +969,6 @@ GLenum Args(int argc, char **argv)
return GL_TRUE;
}
void GLUTCALLBACK glut_post_redisplay_p(void)
{
glutPostRedisplay();
}
int main(int argc, char **argv)
{
GLenum type;
@ -1027,7 +1000,7 @@ int main(int argc, char **argv)
glutKeyboardFunc(Key);
glutSpecialFunc(Key2);
glutDisplayFunc(Draw);
glutIdleFunc(glut_post_redisplay_p);
glutIdleFunc(Idle);
glutMainLoop();
return 0;