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/cvs/deliantra/Deliantra-Client/rendercache.c
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Comparing deliantra/Deliantra-Client/rendercache.c (file contents):
Revision 1.1 by root, Sat Aug 11 11:07:09 2007 UTC vs.
Revision 1.16 by root, Mon Nov 19 01:37:28 2018 UTC

1typedef struct { 1#include <vector>
2
3#include "salloc.h"
4
5struct rc_key_t
6{
2 GLenum mode; 7 GLenum mode;
3 GLenum format; // GL_T2F_V3F, GL_V2F 8 GLenum format; // 0, GL_T2F_V3F, GL_V2F
4 GLint texname; 9 GLuint texname;
5 unsigned char r, g, b, a; 10 unsigned char r, g, b, a;
6} rc_key_t;
7 11
8typedef struct { 12 bool operator == (const rc_key_t &o) const
9 HV *hv; 13 {
10} rc_t; 14 return mode == o.mode
15 && format == o.format
16 && texname == o.texname
17 && r == o.r
18 && g == o.g
19 && b == o.b
20 && a == o.a;
21 }
22};
11 23
12typedef SV rc_array_t; 24namespace std {
13 25 template <>
14static rc_t * 26 struct hash<rc_key_t>
15rc_alloc () 27 {
16{ 28 size_t operator () (const rc_key_t &v) const
17 rc_t *rc = g_slice_new0 (rc_t); 29 {
18 rc->hv = newHV (); 30 return v.mode + (v.format << 4) + v.texname + (v.r << 8) + (v.g << 16) + (v.b << 24) + v.a;
19 31 }
20 return rc; 32 };
21} 33}
22 34
23static void 35struct rc_t
24rc_free (rc_t *rc)
25{ 36{
26 SvREFCNT_dec (rc->hv); 37 struct glyph_data
27 g_slice_free (rc_t, rc); 38 {
28} 39 uint8_t u, v, w, h;
40 uint16_t x, y;
41 };
29 42
30static void 43 struct array_t
31rc_clear (rc_t *rc) 44 : std::vector<uint8_t, slice_allocator<uint8_t>>
32{ 45 {
33 hv_clear (rc->hv); 46 using std::vector<uint8_t, slice_allocator<uint8_t>>::vector;
34}
35 47
36static rc_array_t * 48 template<typename T>
37rc_array (rc_t *rc, rc_key_t *k) 49 T &append ()
38{
39 SV *sv = *hv_fetch (rc->hv, (char *)k, sizeof (*k), 1);
40
41 if (SvTYPE (sv) != SVt_PV)
42 { 50 {
43 sv_upgrade (sv, SVt_PV); 51 auto ofs = size ();
44 SvPOK_only (sv); 52 resize (ofs + sizeof (T));
53 return *(T *)(data () + ofs);
45 } 54 }
46 55
47 return sv; 56 void v2f (float x, float y)
48}
49
50static void
51rc_v2f (rc_array_t *arr, float x, float y)
52{
53 STRLEN len = SvCUR (arr) + sizeof (float) * 5;
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
62static void
63rc_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
78static void
79rc_draw (rc_t *rc)
80{
81 HE *he;
82
83 hv_iterinit (rc->hv);
84 while ((he = hv_iternext (rc->hv)))
85 { 57 {
86 rc_key_t *key = (rc_key_t *)HeKEY (he); 58 auto &vec = append<float[2]> ();
87 rc_array_t *arr = HeVAL (he); 59 vec[0] = x / 2;
88 STRLEN len; 60 vec[1] = y / 2;
89 char *arr_pv = SvPV (arr, len);
90 GLsizei stride;
91
92 stride = key->format == GL_T2F_V3F ? sizeof (float) * 5
93 : key->format == GL_V2F ? sizeof (float) * 2
94 : 65536;
95
96 if (key->texname)
97 {
98 glBindTexture (GL_TEXTURE_2D, key->texname);
99 glEnable (GL_TEXTURE_2D);
100 }
101 else
102 glDisable (GL_TEXTURE_2D);
103
104 glColor4ub (key->r, key->g, key->b, key->a);
105 glInterleavedArrays (key->format, 0, (void *)arr_pv);
106 glDrawArrays (key->mode, 0, len / stride);
107 } 61 }
108 62
109 glDisable (GL_TEXTURE_2D); 63 void t2f_v3f (float u, float v, float x, float y, float z)
110} 64 {
65 auto &vec = append<float[5]> ();
66 vec[0] = u;
67 vec[1] = v;
68 vec[2] = x;
69 vec[3] = y;
70 vec[4] = z;
71 }
111 72
73 void glyph (int u, int v, int w, int h, int x, int y)
74 {
75 if (w && h)
76 {
77 auto &c = append<glyph_data> ();
112 78
79 c.u = u;
80 c.v = v;
81 c.w = w;
82 c.h = h;
83 c.x = x + w;
84 c.y = y + h;
85 }
86 }
87 };
113 88
89 int drawcount = 0;
90 ska::flat_hash_map<rc_key_t, array_t, std::hash<rc_key_t>, std::equal_to<rc_key_t>, slice_allocator<rc_key_t>> h;
114 91
92 void clear ()
93 {
94 drawcount = 0;
95 h.clear ();
96 }
97
98 array_t &array (const rc_key_t &k)
99 {
100 return h[k];
101 }
102
103 void draw ()
104 {
105 for (auto &&it = h.begin (); it != h.end (); ++it)
106 {
107 rc_key_t &key = it->first;
108 array_t &arr = it->second;
109 GLsizei stride;
110
111 if (key.texname)
112 {
113 glBindTexture (GL_TEXTURE_2D, key.texname);
114 glEnable (GL_TEXTURE_2D);
115 }
116 else
117 glDisable (GL_TEXTURE_2D);
118
119 glColor4ub (key.r, key.g, key.b, key.a);
120
121 if (key.format)
122 {
123 stride = key.format == GL_T2F_V3F ? sizeof (float) * 5
124 : key.format == GL_V2F ? sizeof (float) * 2
125 : 65536;
126
127 glInterleavedArrays (key.format, 0, (void *)arr.data ());
128 //glLockArraysEXT (0, len / stride);
129 glDrawArrays (key.mode, 0, arr.size () / stride);
130 //glUnlockArraysEXT ();
131 }
132 else
133 {
134 // optimised character quad storage. slower but nice on memory.
135 // reduces storage requirements from 80 bytes/char to 8
136 auto *c = (glyph_data *) arr.data ();
137 auto *e = (glyph_data *)(arr.data () + arr.size ());
138
139 glBegin (key.mode); // practically must be quads
140
141 while (c < e)
142 {
143 glTexCoord2f ( c->u * (1.f / TC_WIDTH), c->v * (1.f / TC_HEIGHT)); glVertex2i (c->x - c->w, c->y - c->h);
144 glTexCoord2f ((c->u + c->w) * (1.f / TC_WIDTH), c->v * (1.f / TC_HEIGHT)); glVertex2i (c->x , c->y - c->h);
145 glTexCoord2f ((c->u + c->w) * (1.f / TC_WIDTH), (c->v + c->h) * (1.f / TC_HEIGHT)); glVertex2i (c->x , c->y );
146 glTexCoord2f ( c->u * (1.f / TC_WIDTH), (c->v + c->h) * (1.f / TC_HEIGHT)); glVertex2i (c->x - c->w, c->y );
147
148 ++c;
149 }
150
151 glEnd ();
152 }
153 }
154
155 glDisable (GL_TEXTURE_2D);
156
157 if (ecb_expect_false (++drawcount == 16))
158 for (auto &&it = h.begin (); it != h.end (); ++it)
159 it->second.shrink_to_fit ();
160 }
161};
162

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