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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

# 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 1.1 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 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     *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 root 1.1 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 root 1.3
122 root 1.4 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 root 1.3
160 root 1.4 glEnd ();
161     }
162 root 1.1 }
163    
164     glDisable (GL_TEXTURE_2D);
165     }
166    
167    
168    
169