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
|
#!/usr/bin/python
import sys
import StringIO
def vec_type(g, size):
if size == 1:
if g == "i":
return "int"
elif g == "u":
return "uint"
return "float"
return g + "vec" + str(size)
# Get the base dimension - i.e. sampler3D gives 3
# Array samplers also get +1 here since the layer is really an extra coordinate
def get_coord_dim(sampler_type):
if sampler_type[0].isdigit():
coord_dim = int(sampler_type[0])
elif sampler_type.startswith("Cube"):
coord_dim = 3
else:
assert False ("coord_dim: invalid sampler_type: " + sampler_type)
if sampler_type.find("Array") != -1:
coord_dim += 1
return coord_dim
# Get the number of extra vector components (i.e. shadow comparitor)
def get_extra_dim(sampler_type, use_proj, unused_fields):
extra_dim = unused_fields
if sampler_type.find("Shadow") != -1:
extra_dim += 1
if use_proj:
extra_dim += 1
return extra_dim
def generate_sigs(g, tex_inst, sampler_type, use_proj = False, unused_fields = 0):
coord_dim = get_coord_dim(sampler_type)
extra_dim = get_extra_dim(sampler_type, use_proj, unused_fields)
# Print parameters
print " (signature " + g + "vec4"
print " (parameters"
print " (declare (in) " + g + "sampler" + sampler_type + " sampler)"
print " (declare (in) " + vec_type("i" if tex_inst == "txf" else "", coord_dim + extra_dim) + " P)",
if tex_inst == "txb":
print "\n (declare (in) float bias)",
elif tex_inst == "txl":
print "\n (declare (in) float lod)",
elif tex_inst == "txf":
print "\n (declare (in) int lod)",
elif tex_inst == "txd":
grad_type = vec_type("", coord_dim)
print "\n (declare (in) " + grad_type + " dPdx)",
print "\n (declare (in) " + grad_type + " dPdy)",
print ")\n ((return (" + tex_inst + " (var_ref sampler)",
# Coordinate
if extra_dim > 0:
print "(swiz " + "xyzw"[:coord_dim] + " (var_ref P))",
else:
print "(var_ref P)",
# Offset
print "(0 0 0)",
if tex_inst != "txf":
# Projective divisor
if use_proj:
print "(swiz " + "xyzw"[coord_dim + extra_dim-1] + " (var_ref P))",
else:
print "1",
# Shadow comparitor
if sampler_type == "2DArrayShadow": # a special case:
print "(swiz w (var_ref P))", # ...array layer is z; shadow is w
elif sampler_type.endswith("Shadow"):
print "(swiz z (var_ref P))",
else:
print "()",
# Bias/explicit LOD/gradient:
if tex_inst == "txb":
print "(var_ref bias)",
elif tex_inst == "txl" or tex_inst == "txf":
print "(var_ref lod)",
elif tex_inst == "txd":
print "((var_ref dPdx) (var_ref dPdy))",
print "))))\n"
def generate_fiu_sigs(tex_inst, sampler_type, use_proj = False, unused_fields = 0):
generate_sigs("", tex_inst, sampler_type, use_proj, unused_fields)
generate_sigs("i", tex_inst, sampler_type, use_proj, unused_fields)
generate_sigs("u", tex_inst, sampler_type, use_proj, unused_fields)
def start_function(name):
sys.stdout = StringIO.StringIO()
print "((function " + name
def end_function(fs, name):
print "))"
fs[name] = sys.stdout.getvalue();
sys.stdout.close()
# Generate all the functions and store them in the supplied dictionary.
# This is better than writing them to actual files since they should never be
# edited; it'd also be easy to confuse them with the many hand-generated files.
#
# Takes a dictionary as an argument.
def generate_texture_functions(fs):
start_function("texture")
generate_fiu_sigs("tex", "1D")
generate_fiu_sigs("tex", "2D")
generate_fiu_sigs("tex", "3D")
generate_fiu_sigs("tex", "Cube")
generate_fiu_sigs("tex", "1DArray")
generate_fiu_sigs("tex", "2DArray")
generate_fiu_sigs("txb", "1D")
generate_fiu_sigs("txb", "2D")
generate_fiu_sigs("txb", "3D")
generate_fiu_sigs("txb", "Cube")
generate_fiu_sigs("txb", "1DArray")
generate_fiu_sigs("txb", "2DArray")
end_function(fs, "texture")
start_function("textureProj")
generate_fiu_sigs("tex", "1D", True)
generate_fiu_sigs("tex", "1D", True, 2)
generate_fiu_sigs("tex", "2D", True)
generate_fiu_sigs("tex", "2D", True, 1)
generate_fiu_sigs("tex", "3D", True)
generate_fiu_sigs("txb", "1D", True)
generate_fiu_sigs("txb", "1D", True, 2)
generate_fiu_sigs("txb", "2D", True)
generate_fiu_sigs("txb", "2D", True, 1)
generate_fiu_sigs("txb", "3D", True)
end_function(fs, "textureProj")
start_function("textureLod")
generate_fiu_sigs("txl", "1D")
generate_fiu_sigs("txl", "2D")
generate_fiu_sigs("txl", "3D")
generate_fiu_sigs("txl", "Cube")
generate_fiu_sigs("txl", "1DArray")
generate_fiu_sigs("txl", "2DArray")
end_function(fs, "textureLod")
start_function("texelFetch")
generate_fiu_sigs("txf", "1D")
generate_fiu_sigs("txf", "2D")
generate_fiu_sigs("txf", "3D")
generate_fiu_sigs("txf", "1DArray")
generate_fiu_sigs("txf", "2DArray")
end_function(fs, "texelFetch")
start_function("textureProjLod")
generate_fiu_sigs("txl", "1D", True)
generate_fiu_sigs("txl", "1D", True, 2)
generate_fiu_sigs("txl", "2D", True)
generate_fiu_sigs("txl", "2D", True, 1)
generate_fiu_sigs("txl", "3D", True)
end_function(fs, "textureProjLod")
start_function("textureGrad")
generate_fiu_sigs("txd", "1D")
generate_fiu_sigs("txd", "2D")
generate_fiu_sigs("txd", "3D")
generate_fiu_sigs("txd", "Cube")
generate_fiu_sigs("txd", "1DArray")
generate_fiu_sigs("txd", "2DArray")
end_function(fs, "textureGrad")
start_function("textureProjGrad")
generate_fiu_sigs("txd", "1D", True)
generate_fiu_sigs("txd", "1D", True, 2)
generate_fiu_sigs("txd", "2D", True)
generate_fiu_sigs("txd", "2D", True, 1)
generate_fiu_sigs("txd", "3D", True)
end_function(fs, "textureProjGrad")
# ARB_texture_rectangle extension
start_function("texture2DRect")
generate_sigs("", "tex", "2DRect")
end_function(fs, "texture2DRect")
start_function("texture2DRectProj")
generate_sigs("", "tex", "2DRect", True)
generate_sigs("", "tex", "2DRect", True, 1)
end_function(fs, "texture2DRectProj")
start_function("shadow2DRect")
generate_sigs("", "tex", "2DRectShadow")
end_function(fs, "shadow2DRect")
start_function("shadow2DRectProj")
generate_sigs("", "tex", "2DRectShadow", True)
end_function(fs, "shadow2DRectProj")
# EXT_texture_array extension
start_function("texture1DArray")
generate_sigs("", "tex", "1DArray")
generate_sigs("", "txb", "1DArray")
end_function(fs, "texture1DArray")
start_function("texture1DArrayLod")
generate_sigs("", "txl", "1DArray")
end_function(fs, "texture1DArrayLod")
start_function("texture2DArray")
generate_sigs("", "tex", "2DArray")
generate_sigs("", "txb", "2DArray")
end_function(fs, "texture2DArray")
start_function("texture2DArrayLod")
generate_sigs("", "txl", "2DArray")
end_function(fs, "texture2DArrayLod")
start_function("shadow1DArray")
generate_sigs("", "tex", "1DArrayShadow")
generate_sigs("", "txb", "1DArrayShadow")
end_function(fs, "shadow1DArray")
start_function("shadow1DArrayLod")
generate_sigs("", "txl", "1DArrayShadow")
end_function(fs, "shadow1DArrayLod")
start_function("shadow2DArray")
generate_sigs("", "tex", "2DArrayShadow")
end_function(fs, "shadow2DArray")
# Deprecated (110/120 style) functions with silly names:
start_function("texture1D")
generate_sigs("", "tex", "1D")
generate_sigs("", "txb", "1D")
end_function(fs, "texture1D")
start_function("texture1DLod")
generate_sigs("", "txl", "1D")
end_function(fs, "texture1DLod")
start_function("texture1DProj")
generate_sigs("", "tex", "1D", True)
generate_sigs("", "tex", "1D", True, 2)
generate_sigs("", "txb", "1D", True)
generate_sigs("", "txb", "1D", True, 2)
end_function(fs, "texture1DProj")
start_function("texture1DProjLod")
generate_sigs("", "txl", "1D", True)
generate_sigs("", "txl", "1D", True, 2)
end_function(fs, "texture1DProjLod")
start_function("texture2D")
generate_sigs("", "tex", "2D")
generate_sigs("", "txb", "2D")
end_function(fs, "texture2D")
start_function("texture2DLod")
generate_sigs("", "txl", "2D")
end_function(fs, "texture2DLod")
start_function("texture2DProj")
generate_sigs("", "tex", "2D", True)
generate_sigs("", "tex", "2D", True, 1)
generate_sigs("", "txb", "2D", True)
generate_sigs("", "txb", "2D", True, 1)
end_function(fs, "texture2DProj")
start_function("texture2DProjLod")
generate_sigs("", "txl", "2D", True)
generate_sigs("", "txl", "2D", True, 1)
end_function(fs, "texture2DProjLod")
start_function("texture3D")
generate_sigs("", "tex", "3D")
generate_sigs("", "txb", "3D")
end_function(fs, "texture3D")
start_function("texture3DLod")
generate_sigs("", "txl", "3D")
end_function(fs, "texture3DLod")
start_function("texture3DProj")
generate_sigs("", "tex", "3D", True)
generate_sigs("", "txb", "3D", True)
end_function(fs, "texture3DProj")
start_function("texture3DProjLod")
generate_sigs("", "txl", "3D", True)
end_function(fs, "texture3DProjLod")
start_function("textureCube")
generate_sigs("", "tex", "Cube")
generate_sigs("", "txb", "Cube")
end_function(fs, "textureCube")
start_function("textureCubeLod")
generate_sigs("", "txl", "Cube")
end_function(fs, "textureCubeLod")
start_function("shadow1D")
generate_sigs("", "tex", "1DShadow", False, 1)
generate_sigs("", "txb", "1DShadow", False, 1)
end_function(fs, "shadow1D")
start_function("shadow1DLod")
generate_sigs("", "txl", "1DShadow", False, 1)
end_function(fs, "shadow1DLod")
start_function("shadow1DProj")
generate_sigs("", "tex", "1DShadow", True, 1)
generate_sigs("", "txb", "1DShadow", True, 1)
end_function(fs, "shadow1DProj")
start_function("shadow1DProjLod")
generate_sigs("", "txl", "1DShadow", True, 1)
end_function(fs, "shadow1DProjLod")
start_function("shadow2D")
generate_sigs("", "tex", "2DShadow")
generate_sigs("", "txb", "2DShadow")
end_function(fs, "shadow2D")
start_function("shadow2DLod")
generate_sigs("", "txl", "2DShadow")
end_function(fs, "shadow2DLod")
start_function("shadow2DProj")
generate_sigs("", "tex", "2DShadow", True)
generate_sigs("", "txb", "2DShadow", True)
end_function(fs, "shadow2DProj")
start_function("shadow2DProjLod")
generate_sigs("", "txl", "2DShadow", True)
end_function(fs, "shadow2DProjLod")
sys.stdout = sys.__stdout__
return fs
# If you actually run this script, it'll print out all the functions.
if __name__ == "__main__":
fs = {}
generate_texture_functions(fs);
for k, v in fs.iteritems():
print v
|
