1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
|
[require]
GLSL >= 1.10
[vertex shader]
#version 120
#extension GL_ARB_texture_rectangle : enable
#define flat
#define texture2DRectOffset(sampler, coords, offset) texture2DRect(sampler, coords + vec2(offset))
#define shadow2DRectOffset(sampler, coords, offset) shadow2DRect(sampler, coords + vec2(offset))
attribute vec4 vvertex;
uniform mat4 lightmatrix;
void main(void)
{
gl_Position = lightmatrix * vvertex;
}
[fragment shader]
#version 120
#extension GL_ARB_texture_rectangle : enable
#define flat
#define texture2DRectOffset(sampler, coords, offset) texture2DRect(sampler, coords + vec2(offset))
#define shadow2DRectOffset(sampler, coords, offset) shadow2DRect(sampler, coords + vec2(offset))
#define fragdata(loc, name, type)
#define fragcolor gl_FragData[0]
uniform sampler2DRect tex0, tex1, tex3 ;
uniform sampler2DRectShadow tex4;
uniform vec4 lightpos[7];
uniform vec3 lightcolor[7];
uniform vec4 shadowparams[7];
uniform vec2 shadowoffset[7];
uniform vec3 splitcenter[3];
uniform vec3 splitbounds[3];
uniform vec3 splitscale[3];
uniform vec3 splitoffset[3];
uniform vec3 camera;
uniform mat4 worldmatrix;
uniform vec4 fogdir;
uniform vec3 fogcolor;
uniform vec2 fogdensity;
uniform vec4 radialfogscale;
uniform vec2 shadowatlasscale;
uniform vec4 lightscale;
uniform vec3 gdepthscale;
uniform vec3 gdepthunpackparams;
fragdata(0, fragcolor, vec4)
vec3 getshadowtc(vec3 dir, vec4 shadowparams, vec2 shadowoffset, float distbias)
{
vec3 adir = abs(dir);
float m = max(adir.x, adir.y), mz = max(adir.z, m);
vec2 mparams = shadowparams.xy / max(mz + distbias, 1e-5);
vec4 proj;
if(adir.x > adir.y) proj = vec4(dir.zyx, 0.0); else proj = vec4(dir.xzy, 1.0);
if(adir.z > m) proj = vec4(dir, 2.0);
return vec3(proj.xy * mparams.x + vec2(proj.w, step(proj.z, 0.0)) * shadowparams.z + shadowoffset, mparams.y + shadowparams.w);
}
#define shadowval(center, xoff, yoff) float(shadow2DRect(tex4, center + vec3(xoff, yoff, 0.0)))
float filtershadow(vec3 shadowtc)
{
vec2 offset = fract(shadowtc.xy - 0.5);
vec3 center = shadowtc;
center.xy -= offset*0.5;
vec4 size = vec4(offset + 1.0, 2.0 - offset);
return (1.0/9.0)*dot(size.zxzx*size.wwyy,
vec4(shadowval(center, -0.5, -0.5),
shadowval(center, 1.0, -0.5),
shadowval(center, -0.5, 1.0),
shadowval(center, 1.0, 1.0)));
}
void main(void)
{
#define gfetch(sampler, coords) texture2DRect(sampler, coords)
#define accumlight(light) fragcolor.rgb = light
#define accumalpha(alpha) fragcolor.a = alpha
vec4 normal = gfetch(tex1, gl_FragCoord.xy);
#define alpha 1.0
normal.xyz = normal.xyz*2.0 - 1.0;
#define glowscale normal.a
vec4 diffuse = gfetch(tex0, gl_FragCoord.xy);
diffuse.rgb *= glowscale;
#define depthvals gfetch(tex3, gl_FragCoord.xy)
float depth = depthvals.r;
vec4 pos = worldmatrix * vec4(gl_FragCoord.xy, depth, 1.0);
pos.xyz /= pos.w;
float fogcoord = length(camera - pos.xyz);
#define distbias -8.0
vec3 camdir = normalize(camera - pos.xyz);
float facing = 2.0*dot(normal.xyz, camdir);
vec3 light = vec3(0.0);
vec3 light0dir = pos.xyz * lightpos[0].w - lightpos[0].xyz;
float light0dist2 = dot(light0dir, light0dir);
if(light0dist2 < 1.0)
{
float light0facing = dot(light0dir, normal.xyz);
if(light0facing < 0.0)
{
float light0invdist = inversesqrt(light0dist2);
float light0atten = light0facing * (1.0 - light0invdist);
vec3 shadow0tc = getshadowtc(light0dir, shadowparams[0], shadowoffset[0], distbias * lightpos[0].w);
light0atten *= filtershadow(shadow0tc);
float light0spec = pow(clamp(light0invdist*(dot(camdir, light0dir) - light0facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light0spec) * lightcolor[0] * light0atten;
}
}
vec3 light1dir = pos.xyz * lightpos[1].w - lightpos[1].xyz;
float light1dist2 = dot(light1dir, light1dir);
if(light1dist2 < 1.0)
{
float light1facing = dot(light1dir, normal.xyz);
if(light1facing < 0.0)
{
float light1invdist = inversesqrt(light1dist2);
float light1atten = light1facing * (1.0 - light1invdist);
vec3 shadow1tc = getshadowtc(light1dir, shadowparams[1], shadowoffset[1], distbias * lightpos[1].w);
light1atten *= filtershadow(shadow1tc);
float light1spec = pow(clamp(light1invdist*(dot(camdir, light1dir) - light1facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light1spec) * lightcolor[1] * light1atten;
}
}
vec3 light2dir = pos.xyz * lightpos[2].w - lightpos[2].xyz;
float light2dist2 = dot(light2dir, light2dir);
if(light2dist2 < 1.0)
{
float light2facing = dot(light2dir, normal.xyz);
if(light2facing < 0.0)
{
float light2invdist = inversesqrt(light2dist2);
float light2atten = light2facing * (1.0 - light2invdist);
vec3 shadow2tc = getshadowtc(light2dir, shadowparams[2], shadowoffset[2], distbias * lightpos[2].w);
light2atten *= filtershadow(shadow2tc);
float light2spec = pow(clamp(light2invdist*(dot(camdir, light2dir) - light2facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light2spec) * lightcolor[2] * light2atten;
}
}
vec3 light3dir = pos.xyz * lightpos[3].w - lightpos[3].xyz;
float light3dist2 = dot(light3dir, light3dir);
if(light3dist2 < 1.0)
{
float light3facing = dot(light3dir, normal.xyz);
if(light3facing < 0.0)
{
float light3invdist = inversesqrt(light3dist2);
float light3atten = light3facing * (1.0 - light3invdist);
vec3 shadow3tc = getshadowtc(light3dir, shadowparams[3], shadowoffset[3], distbias * lightpos[3].w);
light3atten *= filtershadow(shadow3tc);
float light3spec = pow(clamp(light3invdist*(dot(camdir, light3dir) - light3facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light3spec) * lightcolor[3] * light3atten;
}
}
vec3 light4dir = pos.xyz * lightpos[4].w - lightpos[4].xyz;
float light4dist2 = dot(light4dir, light4dir);
if(light4dist2 < 1.0)
{
float light4facing = dot(light4dir, normal.xyz);
if(light4facing < 0.0)
{
float light4invdist = inversesqrt(light4dist2);
float light4atten = light4facing * (1.0 - light4invdist);
vec3 shadow4tc = getshadowtc(light4dir, shadowparams[4], shadowoffset[4], distbias * lightpos[4].w);
light4atten *= filtershadow(shadow4tc);
float light4spec = pow(clamp(light4invdist*(dot(camdir, light4dir) - light4facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light4spec) * lightcolor[4] * light4atten;
}
}
vec3 light5dir = pos.xyz * lightpos[5].w - lightpos[5].xyz;
float light5dist2 = dot(light5dir, light5dir);
if(light5dist2 < 1.0)
{
float light5facing = dot(light5dir, normal.xyz);
if(light5facing < 0.0)
{
float light5invdist = inversesqrt(light5dist2);
float light5atten = light5facing * (1.0 - light5invdist);
vec3 shadow5tc = getshadowtc(light5dir, shadowparams[5], shadowoffset[5], distbias * lightpos[5].w);
light5atten *= filtershadow(shadow5tc);
float light5spec = pow(clamp(light5invdist*(dot(camdir, light5dir) - light5facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light5spec) * lightcolor[5] * light5atten;
}
}
vec3 light6dir = pos.xyz * lightpos[6].w - lightpos[6].xyz;
float light6dist2 = dot(light6dir, light6dir);
if(light6dist2 < 1.0)
{
float light6facing = dot(light6dir, normal.xyz);
if(light6facing < 0.0)
{
float light6invdist = inversesqrt(light6dist2);
float light6atten = light6facing * (1.0 - light6invdist);
vec3 shadow6tc = getshadowtc(light6dir, shadowparams[6], shadowoffset[6], distbias * lightpos[6].w);
light6atten *= filtershadow(shadow6tc);
float light6spec = pow(clamp(light6invdist*(dot(camdir, light6dir) - light6facing*facing), 0.0, 1.0), 16.0) * diffuse.a;
light += (diffuse.rgb + light6spec) * lightcolor[6] * light6atten;
}
}
float foglerp = clamp(exp2(fogcoord*fogdensity.x)*fogdensity.y, 0.0, 1.0);
accumlight(light*foglerp);
accumalpha(0.0);
}
|
