deliantra/Deliantra-Client/rendercache.c

typedef struct {
   GLenum mode;
   GLenum format; // GL_T2F_V3F, GL_V2F
   GLint texname;
   unsigned char r, g, b, a;
} rc_key_t;

typedef struct {
   HV *hv;
} rc_t;

typedef SV rc_array_t;

static rc_t *
rc_alloc ()
{
  rc_t *rc = g_slice_new0 (rc_t);
  rc->hv = newHV ();

  return rc;
}

static void
rc_free (rc_t *rc)
{
  SvREFCNT_dec (rc->hv);
  g_slice_free (rc_t, rc);
}

static void
rc_clear (rc_t *rc)
{
  hv_clear (rc->hv);
}

static rc_array_t *
rc_array (rc_t *rc, rc_key_t *k)
{
  SV *sv = *hv_fetch (rc->hv, (char *)k, sizeof (*k), 1);

  if (SvTYPE (sv) != SVt_PV)
    {
      sv_upgrade (sv, SVt_PV);
      SvPOK_only (sv);
    }

  return sv;
}

static void
rc_v2f (rc_array_t *arr, float x, float y)
{
  STRLEN len = SvCUR (arr) + sizeof (float) * 5;
  SvGROW (arr, len);

  ((float *)SvEND (arr))[0] = x;
  ((float *)SvEND (arr))[1] = y;

  SvCUR_set (arr, len);
}

static void
rc_t2f_v3f (rc_array_t *arr, float u, float v, float x, float y, float z)
{
  STRLEN len = SvCUR (arr) + sizeof (float) * 5;
  SvGROW (arr, len);

  ((float *)SvEND (arr))[0] = u;
  ((float *)SvEND (arr))[1] = v;

  ((float *)SvEND (arr))[2] = x;
  ((float *)SvEND (arr))[3] = y;
  ((float *)SvEND (arr))[4] = z;

  SvCUR_set (arr, len);
}

static void
rc_draw (rc_t *rc)
{
  HE *he;

  hv_iterinit (rc->hv);
  while ((he = hv_iternext (rc->hv)))
    {
      rc_key_t *key = (rc_key_t *)HeKEY (he);
      rc_array_t *arr = HeVAL (he);
      STRLEN len;
      char *arr_pv = SvPV (arr, len);
      GLsizei stride;

      stride = key->format == GL_T2F_V3F ? sizeof (float) * 5
             : key->format == GL_V2F     ? sizeof (float) * 2
             : 65536;

      if (key->texname)
        {
          glBindTexture (GL_TEXTURE_2D, key->texname);
          glEnable (GL_TEXTURE_2D);
        }
      else
        glDisable (GL_TEXTURE_2D);

      glColor4ub (key->r, key->g, key->b, key->a);
      glInterleavedArrays (key->format, 0, (void *)arr_pv);
      glDrawArrays (key->mode, 0, len / stride);
    }

  glDisable (GL_TEXTURE_2D);
}


Revision:	1.1
Committed:	Sat Aug 11 11:07:09 2007 UTC (16 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
Log Message:	* implement a "render cache", sort of our own slow display list. * use it when drawing the map. while this will perfectly sort by texture and thus give a nice speedup in itself (hardware), its not the actual goal.
#	Content
1	typedef struct {
2	GLenum mode;
3	GLenum format; // GL_T2F_V3F, GL_V2F
4	GLint texname;
5	unsigned char r, g, b, a;
6	} rc_key_t;
7
8	typedef struct {
9	HV *hv;
10	} rc_t;
11
12	typedef SV rc_array_t;
13
14	static rc_t *
15	rc_alloc ()
16	{
17	rc_t *rc = g_slice_new0 (rc_t);
18	rc->hv = newHV ();
19
20	return rc;
21	}
22
23	static void
24	rc_free (rc_t *rc)
25	{
26	SvREFCNT_dec (rc->hv);
27	g_slice_free (rc_t, rc);
28	}
29
30	static void
31	rc_clear (rc_t *rc)
32	{
33	hv_clear (rc->hv);
34	}
35
36	static rc_array_t *
37	rc_array (rc_t rc, rc_key_t k)
38	{
39	SV sv = hv_fetch (rc->hv, (char )k, sizeof (k), 1);
40
41	if (SvTYPE (sv) != SVt_PV)
42	{
43	sv_upgrade (sv, SVt_PV);
44	SvPOK_only (sv);
45	}
46
47	return sv;
48	}
49
50	static void
51	rc_v2f (rc_array_t *arr, float x, float y)
52	{
53	STRLEN len = SvCUR (arr) + sizeof (float) * 5;
54	SvGROW (arr, len);
55
56	((float *)SvEND (arr))[0] = x;
57	((float *)SvEND (arr))[1] = y;
58
59	SvCUR_set (arr, len);
60	}
61
62	static void
63	rc_t2f_v3f (rc_array_t *arr, float u, float v, float x, float y, float z)
64	{
65	STRLEN len = SvCUR (arr) + sizeof (float) * 5;
66	SvGROW (arr, len);
67
68	((float *)SvEND (arr))[0] = u;
69	((float *)SvEND (arr))[1] = v;
70
71	((float *)SvEND (arr))[2] = x;
72	((float *)SvEND (arr))[3] = y;
73	((float *)SvEND (arr))[4] = z;
74
75	SvCUR_set (arr, len);
76	}
77
78	static void
79	rc_draw (rc_t *rc)
80	{
81	HE *he;
82
83	hv_iterinit (rc->hv);
84	while ((he = hv_iternext (rc->hv)))
85	{
86	rc_key_t key = (rc_key_t )HeKEY (he);
87	rc_array_t *arr = HeVAL (he);
88	STRLEN len;
89	char *arr_pv = SvPV (arr, len);
90	GLsizei stride;
91
92	stride = key->format == GL_T2F_V3F ? sizeof (float) * 5
93	: key->format == GL_V2F ? sizeof (float) * 2
94	: 65536;
95
96	if (key->texname)
97	{
98	glBindTexture (GL_TEXTURE_2D, key->texname);
99	glEnable (GL_TEXTURE_2D);
100	}
101	else
102	glDisable (GL_TEXTURE_2D);
103
104	glColor4ub (key->r, key->g, key->b, key->a);
105	glInterleavedArrays (key->format, 0, (void *)arr_pv);
106	glDrawArrays (key->mode, 0, len / stride);
107	}
108
109	glDisable (GL_TEXTURE_2D);
110	}
111
112
113
114