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 glMatrixMode(GL_MODELVIEW);

14 glPushMatrix();

15

16 glGetFloatv(GL_MODELVIEW_MATRIX, xform);

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

18 xform[15] = 1.0f;

19

20 glLoadMatrixf(xform);

21

22 glPushAttrib(GL_ENABLE_BIT);

23 glDisable(GL_LIGHTING);

24

25 glDepthMask(0);

26

27 glBegin(GL_QUADS);

28 glColor3f(1, 1, 1);

29 }

30

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

32 {

33 float hsz = p->size / 2.0;

34

35 glTexCoord2f(0, 0);

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

37

38 glTexCoord2f(1, 0);

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

40

41 glTexCoord2f(1, 1);

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

43

44 glTexCoord2f(0, 1);

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

46 }

47

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

49 {

50 glEnd();

51

52 glDepthMask(1);

53 glPopAttrib();

54

55 glMatrixMode(GL_MODELVIEW);

56 glPopMatrix();

57 }