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/cvs/cf.schmorp.de/Deliantra-Client/rendercache.c
Revision: 1.5
Committed: Sun Aug 12 08:49:51 2007 UTC (16 years, 11 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.4: +1 -2 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 typedef struct {
2 GLenum mode;
3 GLenum format; // 0, 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) * 2;
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_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 c = (U8 *)SvEND (arr);
85
86 *c++ = u;
87 *c++ = v;
88 *c++ = w;
89 *c++ = h;
90
91 // use ber-encoding for up to 14 bits (16k)
92 *c = 0x80 | (x >> 7); c += (x >> 7) ? 1 : 0; *c++ = x & 0x7f;
93 *c = 0x80 | (y >> 7); c += (y >> 7) ? 1 : 0; *c++ = y & 0x7f;
94
95 SvCUR_set (arr, c - (U8 *)SvPVX (arr));
96 }
97
98 static void
99 rc_draw (rc_t *rc)
100 {
101 HE *he;
102
103 hv_iterinit (rc->hv);
104 while ((he = hv_iternext (rc->hv)))
105 {
106 rc_key_t *key = (rc_key_t *)HeKEY (he);
107 rc_array_t *arr = HeVAL (he);
108 STRLEN len;
109 char *arr_pv = SvPV (arr, len);
110 GLsizei stride;
111
112 if (key->texname)
113 {
114 glBindTexture (GL_TEXTURE_2D, key->texname);
115 glEnable (GL_TEXTURE_2D);
116 }
117 else
118 glDisable (GL_TEXTURE_2D);
119
120 glColor4ub (key->r, key->g, key->b, key->a);
121
122 if (key->format)
123 {
124 stride = key->format == GL_T2F_V3F ? sizeof (float) * 5
125 : key->format == GL_V2F ? sizeof (float) * 2
126 : 65536;
127
128 glInterleavedArrays (key->format, 0, (void *)arr_pv);
129 //glLockArraysEXT (0, len / stride);
130 glDrawArrays (key->mode, 0, len / stride);
131 //glUnlockArraysEXT ();
132 }
133 else
134 {
135 // optimised character quad storage. slower but nice on memory.
136 // reduces storage requirements from 80 bytes/char to 6-8
137 U8 *c = (U8 *)arr_pv;
138 U8 *e = c + len;
139
140 glBegin (key->mode); // practically must be quads
141
142 while (c < e)
143 {
144 int u, v, x, y, w, h;
145
146 u = *c++;
147 v = *c++;
148 w = *c++;
149 h = *c++;
150
151 x = *c++; if (x > 0x7f) x = ((x & 0x7f) << 7) | *c++;
152 y = *c++; if (y > 0x7f) y = ((y & 0x7f) << 7) | *c++;
153
154 glTexCoord2f ( u * (1.f / TC_WIDTH), v * (1.f / TC_HEIGHT)); glVertex2i (x , y );
155 glTexCoord2f ((u + w) * (1.f / TC_WIDTH), v * (1.f / TC_HEIGHT)); glVertex2i (x + w, y );
156 glTexCoord2f ((u + w) * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x + w, y + h);
157 glTexCoord2f ( u * (1.f / TC_WIDTH), (v + h) * (1.f / TC_HEIGHT)); glVertex2i (x , y + h);
158 }
159
160 glEnd ();
161 }
162 }
163
164 glDisable (GL_TEXTURE_2D);
165 }
166
167
168
169