deliantra/Deliantra-Client/rendercache.c

typedef struct {
   GLenum mode;
   GLenum format; // 0, GL_T2F_V3F, GL_V2F
   GLuint 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 (void)
{
  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);
      sv_grow (sv, 512);
    }

  return sv;
}

static void
rc_v2f (rc_array_t *arr, float x, float y)
{
  char *end = fast_sv_grow (arr, sizeof (float) * 2);

  ((float *)end)[0] = x;
  ((float *)end)[1] = y;
}

static void
rc_t2f_v3f (rc_array_t *arr, float u, float v, float x, float y, float z)
{
  char *end = fast_sv_grow (arr, sizeof (float) * 5);

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

  ((float *)end)[2] = x;
  ((float *)end)[3] = y;
  ((float *)end)[4] = z;
}

static void
rc_glyph (rc_array_t *arr, int u, int v, int w, int h, int x, int y)
{
  if (w && h)
    {
      U8 *c = (U8 *)fast_sv_grow (arr, 4 + 4);

      x += w;
      y += h;

      *c++ = u;
      *c++ = v;
      *c++ = w;
      *c++ = h;

      // use ber-encoding for up to 14 bits (16k)
      *c = 0x80 | (x >> 7); c += (x >> 7) ? 1 : 0; *c++ = x & 0x7f;
      *c = 0x80 | (y >> 7); c += (y >> 7) ? 1 : 0; *c++ = y & 0x7f;

      SvCUR_set (arr, c - (U8 *)SvPVX (arr));
    }
}

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;

      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);

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

          glInterleavedArrays (key->format, 0, (void *)arr_pv);
          //glLockArraysEXT (0, len / stride);
          glDrawArrays (key->mode, 0, len / stride);
          //glUnlockArraysEXT ();
        }
      else
        {
          // optimised character quad storage. slower but nice on memory.
          // reduces storage requirements from 80 bytes/char to 6-8
          U8 *c = (U8 *)arr_pv;
          U8 *e = c + len;

          glBegin (key->mode); // practically must be quads

          while (c < e)
            {
              int u, v, x, y, w, h;

              u = *c++;
              v = *c++;
              w = *c++;
              h = *c++;

              x = *c++; if (x > 0x7f) x = ((x & 0x7f) << 7) | *c++;
              y = *c++; if (y > 0x7f) y = ((y & 0x7f) << 7) | *c++;

              x -= w;
              y -= h;

              glTexCoord2f ( u      * (1.f / TC_WIDTH),  v      * (1.f / TC_HEIGHT)); glVertex2i (x    , y    );
              glTexCoord2f ((u + w) * (1.f / TC_WIDTH),  v      * (1.f / TC_HEIGHT)); glVertex2i (x + w, y    );
              glTexCoord2f ((u + w) * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x + w, y + h);
              glTexCoord2f ( u      * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x    , y + h);
            }

          glEnd ();
        }
    }

  glDisable (GL_TEXTURE_2D);
}


Revision:	1.10
Committed:	Thu Oct 14 00:02:39 2010 UTC (13 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.9:	+11 -19 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	typedef struct {
2			GLenum mode;
3	root	1.3	GLenum format; // 0, GL_T2F_V3F, GL_V2F
4	root	1.7	GLuint texname;
5	root	1.1	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	root	1.8	rc_alloc (void)
16	root	1.1	{
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	root	1.10	sv_grow (sv, 512);
46	root	1.1	}
47
48			return sv;
49			}
50
51			static void
52			rc_v2f (rc_array_t *arr, float x, float y)
53			{
54	root	1.10	char end = fast_sv_grow (arr, sizeof (float) 2);
55	root	1.1
56	root	1.10	((float *)end)[0] = x;
57			((float *)end)[1] = y;
58	root	1.1	}
59
60			static void
61			rc_t2f_v3f (rc_array_t *arr, float u, float v, float x, float y, float z)
62			{
63	root	1.10	char end = fast_sv_grow (arr, sizeof (float) 5);
64	root	1.1
65	root	1.10	((float *)end)[0] = u;
66			((float *)end)[1] = v;
67	root	1.1
68	root	1.10	((float *)end)[2] = x;
69			((float *)end)[3] = y;
70			((float *)end)[4] = z;
71	root	1.1	}
72
73			static void
74	root	1.4	rc_glyph (rc_array_t *arr, int u, int v, int w, int h, int x, int y)
75			{
76	root	1.9	if (w && h)
77			{
78	root	1.10	U8 c = (U8 )fast_sv_grow (arr, 4 + 4);
79	root	1.9
80			x += w;
81			y += h;
82
83			*c++ = u;
84			*c++ = v;
85			*c++ = w;
86			*c++ = h;
87
88			// use ber-encoding for up to 14 bits (16k)
89			c = 0x80 \| (x >> 7); c += (x >> 7) ? 1 : 0; c++ = x & 0x7f;
90			c = 0x80 \| (y >> 7); c += (y >> 7) ? 1 : 0; c++ = y & 0x7f;
91	root	1.4
92	root	1.9	SvCUR_set (arr, c - (U8 *)SvPVX (arr));
93			}
94	root	1.4	}
95
96			static void
97	root	1.1	rc_draw (rc_t *rc)
98			{
99			HE *he;
100
101			hv_iterinit (rc->hv);
102			while ((he = hv_iternext (rc->hv)))
103			{
104			rc_key_t key = (rc_key_t )HeKEY (he);
105			rc_array_t *arr = HeVAL (he);
106			STRLEN len;
107			char *arr_pv = SvPV (arr, len);
108			GLsizei stride;
109
110			if (key->texname)
111			{
112			glBindTexture (GL_TEXTURE_2D, key->texname);
113			glEnable (GL_TEXTURE_2D);
114			}
115			else
116			glDisable (GL_TEXTURE_2D);
117
118			glColor4ub (key->r, key->g, key->b, key->a);
119	root	1.3
120	root	1.4	if (key->format)
121			{
122			stride = key->format == GL_T2F_V3F ? sizeof (float) * 5
123			: key->format == GL_V2F ? sizeof (float) * 2
124			: 65536;
125
126			glInterleavedArrays (key->format, 0, (void *)arr_pv);
127			//glLockArraysEXT (0, len / stride);
128			glDrawArrays (key->mode, 0, len / stride);
129			//glUnlockArraysEXT ();
130			}
131			else
132			{
133			// optimised character quad storage. slower but nice on memory.
134			// reduces storage requirements from 80 bytes/char to 6-8
135			U8 c = (U8 )arr_pv;
136			U8 *e = c + len;
137
138			glBegin (key->mode); // practically must be quads
139
140			while (c < e)
141			{
142			int u, v, x, y, w, h;
143
144			u = *c++;
145			v = *c++;
146			w = *c++;
147			h = *c++;
148
149			x = c++; if (x > 0x7f) x = ((x & 0x7f) << 7) \| c++;
150			y = c++; if (y > 0x7f) y = ((y & 0x7f) << 7) \| c++;
151
152	root	1.6	x -= w;
153			y -= h;
154
155	root	1.4	glTexCoord2f ( u * (1.f / TC_WIDTH), v * (1.f / TC_HEIGHT)); glVertex2i (x , y );
156			glTexCoord2f ((u + w) * (1.f / TC_WIDTH), v * (1.f / TC_HEIGHT)); glVertex2i (x + w, y );
157			glTexCoord2f ((u + w) * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x + w, y + h);
158			glTexCoord2f ( u * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x , y + h);
159			}
160	root	1.3
161	root	1.4	glEnd ();
162			}
163	root	1.1	}
164
165			glDisable (GL_TEXTURE_2D);
166			}
167
168
169
170