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/cvs/cf.schmorp.de/Deliantra-Client/rendercache.c
Revision: 1.10
Committed: Thu Oct 14 00:02:39 2010 UTC (13 years, 9 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.9: +11 -19 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 GLuint 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 (void)
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 sv_grow (sv, 512);
46 }
47
48 return sv;
49 }
50
51 static void
52 rc_v2f (rc_array_t *arr, float x, float y)
53 {
54 char *end = fast_sv_grow (arr, sizeof (float) * 2);
55
56 ((float *)end)[0] = x;
57 ((float *)end)[1] = y;
58 }
59
60 static void
61 rc_t2f_v3f (rc_array_t *arr, float u, float v, float x, float y, float z)
62 {
63 char *end = fast_sv_grow (arr, sizeof (float) * 5);
64
65 ((float *)end)[0] = u;
66 ((float *)end)[1] = v;
67
68 ((float *)end)[2] = x;
69 ((float *)end)[3] = y;
70 ((float *)end)[4] = z;
71 }
72
73 static void
74 rc_glyph (rc_array_t *arr, int u, int v, int w, int h, int x, int y)
75 {
76 if (w && h)
77 {
78 U8 *c = (U8 *)fast_sv_grow (arr, 4 + 4);
79
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
92 SvCUR_set (arr, c - (U8 *)SvPVX (arr));
93 }
94 }
95
96 static void
97 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
120 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 x -= w;
153 y -= h;
154
155 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
161 glEnd ();
162 }
163 }
164
165 glDisable (GL_TEXTURE_2D);
166 }
167
168
169
170