1 #ifndef __APPLE__

2 #include <GL/gl.h>

3 #else

4 #include <OpenGL/gl.h>

5 #endif

6

7 #include "psys_impl.h"

8

9 void psys_gl_draw_start(struct psys_emitter *em, void *cls)

10 {

11 float xform[16];

12

13 vec3_t pos = psys_get_pos(em);

14

15 glPointSize(5.0);

16 glBegin(GL_POINTS);

17 glColor3f(1, 0, 0);

18 glVertex3f(pos.x, pos.y, pos.z);

19 glColor3f(1, 1, 1);

20 glEnd();

21

22 glMatrixMode(GL_MODELVIEW);

23 glPushMatrix();

24

25 glGetFloatv(GL_MODELVIEW_MATRIX, xform);

26 xform[3] = xform[7] = xform[11] = xform[12] = xform[13] = xform[14] = 0.0f;

27 xform[15] = 1.0f;

28

29 glLoadMatrixf(xform);

30

31 glPushAttrib(GL_ENABLE_BIT);

32 glDisable(GL_LIGHTING);

33

34 glDepthMask(0);

35

36 glBegin(GL_QUADS);

37 glColor3f(1, 1, 1);

38 }

39

40 void psys_gl_draw(struct psys_emitter *em, struct psys_particle *p, void *cls)

41 {

42 float hsz = p->size / 2.0;

43

44 glTexCoord2f(0, 0);

45 glVertex3f(p->pos.x - hsz, p->pos.y - hsz, p->pos.z);

46

47 glTexCoord2f(1, 0);

48 glVertex3f(p->pos.x + hsz, p->pos.y - hsz, p->pos.z);

49

50 glTexCoord2f(1, 1);

51 glVertex3f(p->pos.x + hsz, p->pos.y + hsz, p->pos.z);

52

53 glTexCoord2f(0, 1);

54 glVertex3f(p->pos.x - hsz, p->pos.y + hsz, p->pos.z);

55 }

56

57 void psys_gl_draw_end(struct psys_emitter *em, void *cls)

58 {

59 glEnd();

60

61 glDepthMask(1);

62 glPopAttrib();

63

64 glMatrixMode(GL_MODELVIEW);

65 glPopMatrix();

66 }