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);
    }

  return sv;
}

static void
rc_v2f (rc_array_t *arr, float x, float y)
{
  STRLEN len = SvCUR (arr) + sizeof (float) * 2;
  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_glyph (rc_array_t *arr, int u, int v, int w, int h, int x, int y)
{
  U8 *c;
  STRLEN len = SvCUR (arr);
  SvGROW (arr, len + 2 * 2 + 1 * 4);
  c = (U8 *)SvEND (arr);

  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:	1.8
Committed:	Tue Dec 25 18:58:32 2007 UTC (16 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-0_9963
Changes since 1.7:	+1 -1 lines
Log Message:	save/restore textures in a safer way, also save/restore glyph cache
#	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			}
46
47			return sv;
48			}
49
50			static void
51			rc_v2f (rc_array_t *arr, float x, float y)
52			{
53	root	1.2	STRLEN len = SvCUR (arr) + sizeof (float) * 2;
54	root	1.1	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	root	1.4	rc_glyph (rc_array_t *arr, int u, int v, int w, int h, int x, int y)
80			{
81			U8 *c;
82			STRLEN len = SvCUR (arr);
83			SvGROW (arr, len + 2 * 2 + 1 * 4);
84	root	1.5	c = (U8 *)SvEND (arr);
85	root	1.4
86	root	1.6	x += w;
87			y += h;
88
89	root	1.4	*c++ = u;
90			*c++ = v;
91			*c++ = w;
92			*c++ = h;
93
94			// use ber-encoding for up to 14 bits (16k)
95			c = 0x80 \| (x >> 7); c += (x >> 7) ? 1 : 0; c++ = x & 0x7f;
96			c = 0x80 \| (y >> 7); c += (y >> 7) ? 1 : 0; c++ = y & 0x7f;
97
98			SvCUR_set (arr, c - (U8 *)SvPVX (arr));
99			}
100
101			static void
102	root	1.1	rc_draw (rc_t *rc)
103			{
104			HE *he;
105
106			hv_iterinit (rc->hv);
107			while ((he = hv_iternext (rc->hv)))
108			{
109			rc_key_t key = (rc_key_t )HeKEY (he);
110			rc_array_t *arr = HeVAL (he);
111			STRLEN len;
112			char *arr_pv = SvPV (arr, len);
113			GLsizei stride;
114
115			if (key->texname)
116			{
117			glBindTexture (GL_TEXTURE_2D, key->texname);
118			glEnable (GL_TEXTURE_2D);
119			}
120			else
121			glDisable (GL_TEXTURE_2D);
122
123			glColor4ub (key->r, key->g, key->b, key->a);
124	root	1.3
125	root	1.4	if (key->format)
126			{
127			stride = key->format == GL_T2F_V3F ? sizeof (float) * 5
128			: key->format == GL_V2F ? sizeof (float) * 2
129			: 65536;
130
131			glInterleavedArrays (key->format, 0, (void *)arr_pv);
132			//glLockArraysEXT (0, len / stride);
133			glDrawArrays (key->mode, 0, len / stride);
134			//glUnlockArraysEXT ();
135			}
136			else
137			{
138			// optimised character quad storage. slower but nice on memory.
139			// reduces storage requirements from 80 bytes/char to 6-8
140			U8 c = (U8 )arr_pv;
141			U8 *e = c + len;
142
143			glBegin (key->mode); // practically must be quads
144
145			while (c < e)
146			{
147			int u, v, x, y, w, h;
148
149			u = *c++;
150			v = *c++;
151			w = *c++;
152			h = *c++;
153
154			x = c++; if (x > 0x7f) x = ((x & 0x7f) << 7) \| c++;
155			y = c++; if (y > 0x7f) y = ((y & 0x7f) << 7) \| c++;
156
157	root	1.6	x -= w;
158			y -= h;
159
160	root	1.4	glTexCoord2f ( u * (1.f / TC_WIDTH), v * (1.f / TC_HEIGHT)); glVertex2i (x , y );
161			glTexCoord2f ((u + w) * (1.f / TC_WIDTH), v * (1.f / TC_HEIGHT)); glVertex2i (x + w, y );
162			glTexCoord2f ((u + w) * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x + w, y + h);
163			glTexCoord2f ( u * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x , y + h);
164			}
165	root	1.3
166	root	1.4	glEnd ();
167			}
168	root	1.1	}
169
170			glDisable (GL_TEXTURE_2D);
171			}
172
173
174
175