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changes towards GL_ARB_point_sprite (two-zero)

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This commit is contained in:
Daniel Borca
2004-09-13 08:47:01 +00:00
parent e54464e9d3
commit a9ea1628da
6 changed files with 109 additions and 5 deletions
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53
progs/demos/spriteblast.c
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@@ -56,7 +56,7 @@ static GLfloat pointTime[MAX_POINTS];
static GLfloat pointVelocity[MAX_POINTS][2];
static GLfloat pointDirection[MAX_POINTS][2];
static int colorList[MAX_POINTS];
static int animate = 1, motion = 0;
static int animate = 1, motion = 0, org = 0, sprite = 1, smooth = 1;
static GLfloat colorSet[][4] = {
/* Shades of red. */
@@ -240,17 +240,19 @@ redraw(void)
if (blend)
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
if (sprite) {
glEnable(GL_TEXTURE_2D);
#ifdef GL_ARB_point_sprite
glEnable(GL_POINT_SPRITE_ARB);
glEnable(GL_POINT_SPRITE_ARB);
#endif
}
glColor3f(1,1,1);
glBegin(GL_POINTS);
for (i=0; i<numPoints; i++) {
/* Draw alive particles. */
if (colorList[i] != DEAD) {
/*glColor4fv(colorSet[colorList[i]]);*/
if (!sprite) glColor4fv(colorSet[colorList[i]]);
glVertex3fv(pointList[i]);
}
}
@@ -326,9 +328,11 @@ menu(int option)
#endif
case 8:
glEnable(GL_POINT_SMOOTH);
smooth = 1;
break;
case 9:
glDisable(GL_POINT_SMOOTH);
smooth = 0;
break;
case 10:
glPointSize(4.0);
@@ -383,6 +387,47 @@ key(unsigned char c, int x, int y)
makePointList();
glutIdleFunc(idle);
break;
case 'o':
case 'O':
org ^= 1;
#if GL_VERSION_2_0
#if GL_ARB_point_parameters
glPointParameteri(GL_POINT_SPRITE_COORD_ORIGIN,
org ? GL_LOWER_LEFT : GL_UPPER_LEFT);
#endif
#endif
glutPostRedisplay();
break;
case 't':
case 'T':
sprite ^= 1;
glutPostRedisplay();
break;
case 's':
case 'S':
(smooth ^= 1) ? glEnable(GL_POINT_SMOOTH) : glDisable(GL_POINT_SMOOTH);
glutPostRedisplay();
break;
case '0':
glPointSize(1.0);
glutPostRedisplay();
break;
case '1':
glPointSize(2.0);
glutPostRedisplay();
break;
case '2':
glPointSize(4.0);
glutPostRedisplay();
break;
case '3':
glPointSize(8.0);
glutPostRedisplay();
break;
case '4':
glPointSize(16.0);
glutPostRedisplay();
break;
case 27:
exit(0);
}