1 | #include "rc1.0_general.h"
|
---|
2 | #include "nvparse_errors.h"
|
---|
3 | #include "nvparse_externs.h"
|
---|
4 | #include <stdio.h>
|
---|
5 |
|
---|
6 | #include <OgreGLPrerequisites.h>
|
---|
7 |
|
---|
8 | void GeneralCombinersStruct::Validate(int numConsts, ConstColorStruct *pcc)
|
---|
9 | {
|
---|
10 | GLint maxGCs;
|
---|
11 | glGetIntegerv(GL_MAX_GENERAL_COMBINERS_NV, &maxGCs);
|
---|
12 | if (num > maxGCs) {
|
---|
13 | char buffer[256];
|
---|
14 | sprintf(buffer, "%d general combiners specified, only %d supported", num, (int)maxGCs);
|
---|
15 | errors.set(buffer);
|
---|
16 | num = maxGCs;
|
---|
17 | }
|
---|
18 |
|
---|
19 | if (0 == num) {
|
---|
20 | // Setup a "fake" general combiner 0
|
---|
21 | general[0].ZeroOut();
|
---|
22 | num = 1;
|
---|
23 | }
|
---|
24 |
|
---|
25 | localConsts = 0;
|
---|
26 | int i;
|
---|
27 | for (i = 0; i < num; i++)
|
---|
28 | localConsts += general[i].numConsts;
|
---|
29 |
|
---|
30 | if (localConsts > 0)
|
---|
31 | if (NULL == glCombinerStageParameterfvNV)
|
---|
32 | errors.set("local constant(s) specified, but not supported -- ignored");
|
---|
33 | else
|
---|
34 | for (i = 0; i < num; i++)
|
---|
35 | general[i].SetUnusedLocalConsts(numConsts, pcc);
|
---|
36 |
|
---|
37 | for (i = 0; i < num; i++)
|
---|
38 | general[i].Validate(i);
|
---|
39 |
|
---|
40 |
|
---|
41 | for (; i < maxGCs; i++)
|
---|
42 | general[i].ZeroOut();
|
---|
43 | }
|
---|
44 |
|
---|
45 | void GeneralCombinersStruct::Invoke()
|
---|
46 | {
|
---|
47 | glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, num);
|
---|
48 | int i;
|
---|
49 | for (i = 0; i < num; i++)
|
---|
50 | general[i].Invoke(i);
|
---|
51 |
|
---|
52 | if (NULL != glCombinerStageParameterfvNV) {
|
---|
53 | if (localConsts > 0)
|
---|
54 | glEnable(GL_PER_STAGE_CONSTANTS_NV);
|
---|
55 | else
|
---|
56 | glDisable(GL_PER_STAGE_CONSTANTS_NV);
|
---|
57 | }
|
---|
58 |
|
---|
59 | }
|
---|
60 |
|
---|
61 | void GeneralCombinerStruct::ZeroOut()
|
---|
62 | {
|
---|
63 | numPortions = 2;
|
---|
64 | numConsts = 0;
|
---|
65 |
|
---|
66 | portion[0].ZeroOut();
|
---|
67 | portion[0].designator = RCP_RGB;
|
---|
68 | portion[1].ZeroOut();
|
---|
69 | portion[1].designator = RCP_ALPHA;
|
---|
70 | }
|
---|
71 |
|
---|
72 |
|
---|
73 | void GeneralCombinerStruct::SetUnusedLocalConsts(int numGlobalConsts, ConstColorStruct *globalCCs)
|
---|
74 | {
|
---|
75 | int i;
|
---|
76 | for (i = 0; i < numGlobalConsts; i++) {
|
---|
77 | bool constUsed = false;
|
---|
78 | int j;
|
---|
79 | for (j = 0; j < numConsts; j++)
|
---|
80 | constUsed |= (cc[j].reg.bits.name == globalCCs[i].reg.bits.name);
|
---|
81 | if (!constUsed)
|
---|
82 | cc[numConsts++] = globalCCs[i];
|
---|
83 | }
|
---|
84 | }
|
---|
85 |
|
---|
86 |
|
---|
87 | void GeneralCombinerStruct::Validate(int stage)
|
---|
88 | {
|
---|
89 | if (2 == numConsts &&
|
---|
90 | cc[0].reg.bits.name == cc[1].reg.bits.name)
|
---|
91 | errors.set("local constant set twice");
|
---|
92 |
|
---|
93 | switch (numPortions)
|
---|
94 | {
|
---|
95 | case 0:
|
---|
96 | portion[0].designator = RCP_RGB;
|
---|
97 | // Fallthru
|
---|
98 | case 1:
|
---|
99 | portion[1].designator = ((RCP_RGB == portion[0].designator) ? RCP_ALPHA : RCP_RGB);
|
---|
100 | // Fallthru
|
---|
101 | case 2:
|
---|
102 | if (portion[0].designator == portion[1].designator)
|
---|
103 | errors.set("portion declared twice");
|
---|
104 | break;
|
---|
105 | }
|
---|
106 | int i;
|
---|
107 | for (i = 0; i < numPortions; i++)
|
---|
108 | portion[i].Validate(stage);
|
---|
109 |
|
---|
110 | for (; i < 2; i++)
|
---|
111 | portion[i].ZeroOut();
|
---|
112 |
|
---|
113 | }
|
---|
114 |
|
---|
115 | void GeneralCombinerStruct::Invoke(int stage)
|
---|
116 | {
|
---|
117 | int i;
|
---|
118 |
|
---|
119 | if (NULL != glCombinerStageParameterfvNV)
|
---|
120 | for (i = 0; i < numConsts; i++)
|
---|
121 | glCombinerStageParameterfvNV(GL_COMBINER0_NV + stage, cc[i].reg.bits.name, &(cc[i].v[0]));
|
---|
122 |
|
---|
123 | for (i = 0; i < 2; i++)
|
---|
124 | portion[i].Invoke(stage);
|
---|
125 | }
|
---|
126 |
|
---|
127 | void GeneralPortionStruct::Validate(int stage)
|
---|
128 | {
|
---|
129 | gf.Validate(stage, designator);
|
---|
130 | }
|
---|
131 |
|
---|
132 | void GeneralPortionStruct::Invoke(int stage)
|
---|
133 | {
|
---|
134 | gf.Invoke(stage, designator, bs);
|
---|
135 | }
|
---|
136 |
|
---|
137 | void GeneralPortionStruct::ZeroOut()
|
---|
138 | {
|
---|
139 | gf.ZeroOut();
|
---|
140 | bs.word = RCP_SCALE_BY_ONE;
|
---|
141 | }
|
---|
142 |
|
---|
143 | void GeneralFunctionStruct::ZeroOut()
|
---|
144 | {
|
---|
145 | // Create mapped registers for zero and discard
|
---|
146 | MappedRegisterStruct unsignedZero;
|
---|
147 | RegisterEnum zero;
|
---|
148 | zero.word = RCP_ZERO;
|
---|
149 | unsignedZero.Init(zero);
|
---|
150 |
|
---|
151 | MappedRegisterStruct unsignedDiscard;
|
---|
152 | RegisterEnum discard;
|
---|
153 | discard.word = RCP_DISCARD;
|
---|
154 | unsignedDiscard.Init(discard);
|
---|
155 |
|
---|
156 | numOps = 3;
|
---|
157 |
|
---|
158 | op[0].op = RCP_MUL;
|
---|
159 | op[0].reg[0] = unsignedDiscard;
|
---|
160 | op[0].reg[1] = unsignedZero;
|
---|
161 | op[0].reg[2] = unsignedZero;
|
---|
162 |
|
---|
163 | op[1].op = RCP_MUL;
|
---|
164 | op[1].reg[0] = unsignedDiscard;
|
---|
165 | op[1].reg[1] = unsignedZero;
|
---|
166 | op[1].reg[2] = unsignedZero;
|
---|
167 |
|
---|
168 | op[2].op = RCP_SUM;
|
---|
169 | op[2].reg[0] = unsignedDiscard;
|
---|
170 |
|
---|
171 | }
|
---|
172 |
|
---|
173 | void GeneralFunctionStruct::Validate(int stage, int portion)
|
---|
174 | {
|
---|
175 | int i;
|
---|
176 | for (i = 0; i < numOps; i++)
|
---|
177 | op[i].Validate(stage, portion);
|
---|
178 | // Check if multiple ops are writing to same register (and it's not DISCARD)
|
---|
179 | if (numOps > 1 &&
|
---|
180 | op[0].reg[0].reg.bits.name == op[1].reg[0].reg.bits.name &&
|
---|
181 | GL_DISCARD_NV != op[0].reg[0].reg.bits.name)
|
---|
182 | errors.set("writing to same register twice");
|
---|
183 | if (numOps > 2 &&
|
---|
184 | (op[0].reg[0].reg.bits.name == op[2].reg[0].reg.bits.name ||
|
---|
185 | op[1].reg[0].reg.bits.name == op[2].reg[0].reg.bits.name) &&
|
---|
186 | GL_DISCARD_NV != op[2].reg[0].reg.bits.name)
|
---|
187 | errors.set("writing to same register twice");
|
---|
188 |
|
---|
189 | // Set unused outputs to discard, unused inputs to zero/unsigned_identity
|
---|
190 | if (numOps < 2) {
|
---|
191 | // Set C input to zero
|
---|
192 | op[1].reg[1].reg.bits.name = GL_ZERO;
|
---|
193 | op[1].reg[1].map = GL_UNSIGNED_IDENTITY_NV;
|
---|
194 | op[1].reg[1].reg.bits.channel = portion;
|
---|
195 |
|
---|
196 | // Set D input to zero
|
---|
197 | op[1].reg[2].reg.bits.name = GL_ZERO;
|
---|
198 | op[1].reg[2].map = GL_UNSIGNED_IDENTITY_NV;
|
---|
199 | op[1].reg[2].reg.bits.channel = portion;
|
---|
200 |
|
---|
201 | // Discard CD output
|
---|
202 | op[1].op = false;
|
---|
203 | op[1].reg[0].reg.bits.name = GL_DISCARD_NV;
|
---|
204 | }
|
---|
205 |
|
---|
206 | if (numOps < 3) {
|
---|
207 | // Discard muxSum output
|
---|
208 | op[2].reg[0].reg.bits.name = GL_DISCARD_NV;
|
---|
209 | op[2].op = RCP_SUM;
|
---|
210 | }
|
---|
211 | }
|
---|
212 |
|
---|
213 |
|
---|
214 | void GeneralFunctionStruct::Invoke(int stage, int portion, BiasScaleEnum bs)
|
---|
215 | {
|
---|
216 | GLenum portionEnum = (RCP_RGB == portion) ? GL_RGB : GL_ALPHA;
|
---|
217 |
|
---|
218 | glCombinerInputNV(GL_COMBINER0_NV + stage,
|
---|
219 | portionEnum,
|
---|
220 | GL_VARIABLE_A_NV,
|
---|
221 | op[0].reg[1].reg.bits.name,
|
---|
222 | op[0].reg[1].map,
|
---|
223 | MAP_CHANNEL(op[0].reg[1].reg.bits.channel));
|
---|
224 |
|
---|
225 | glCombinerInputNV(GL_COMBINER0_NV + stage,
|
---|
226 | portionEnum,
|
---|
227 | GL_VARIABLE_B_NV,
|
---|
228 | op[0].reg[2].reg.bits.name,
|
---|
229 | op[0].reg[2].map,
|
---|
230 | MAP_CHANNEL(op[0].reg[2].reg.bits.channel));
|
---|
231 |
|
---|
232 | glCombinerInputNV(GL_COMBINER0_NV + stage,
|
---|
233 | portionEnum,
|
---|
234 | GL_VARIABLE_C_NV,
|
---|
235 | op[1].reg[1].reg.bits.name,
|
---|
236 | op[1].reg[1].map,
|
---|
237 | MAP_CHANNEL(op[1].reg[1].reg.bits.channel));
|
---|
238 |
|
---|
239 | glCombinerInputNV(GL_COMBINER0_NV + stage,
|
---|
240 | portionEnum,
|
---|
241 | GL_VARIABLE_D_NV,
|
---|
242 | op[1].reg[2].reg.bits.name,
|
---|
243 | op[1].reg[2].map,
|
---|
244 | MAP_CHANNEL(op[1].reg[2].reg.bits.channel));
|
---|
245 |
|
---|
246 | glCombinerOutputNV(GL_COMBINER0_NV + stage,
|
---|
247 | portionEnum,
|
---|
248 | op[0].reg[0].reg.bits.name,
|
---|
249 | op[1].reg[0].reg.bits.name,
|
---|
250 | op[2].reg[0].reg.bits.name,
|
---|
251 | bs.bits.scale,
|
---|
252 | bs.bits.bias,
|
---|
253 | op[0].op,
|
---|
254 | op[1].op,
|
---|
255 | (op[2].op == RCP_MUX) ? true : false);
|
---|
256 | }
|
---|
257 |
|
---|
258 | // This helper function assigns a channel to an undesignated input register
|
---|
259 | static void ConvertRegister(RegisterEnum& reg, int portion)
|
---|
260 | {
|
---|
261 | if (RCP_NONE == reg.bits.channel) {
|
---|
262 | reg.bits.channel = portion;
|
---|
263 | if (GL_FOG == reg.bits.name && RCP_ALPHA == portion)
|
---|
264 | // Special case where fog alpha is final only, but RGB is not
|
---|
265 | reg.bits.finalOnly = true;
|
---|
266 | }
|
---|
267 | }
|
---|
268 |
|
---|
269 |
|
---|
270 | void OpStruct::Validate(int stage, int portion)
|
---|
271 | {
|
---|
272 | int args = 1;
|
---|
273 |
|
---|
274 | if (RCP_DOT == op || RCP_MUL == op)
|
---|
275 | args = 3;
|
---|
276 | else
|
---|
277 | args = 1;
|
---|
278 |
|
---|
279 | if (reg[0].reg.bits.readOnly)
|
---|
280 | errors.set("writing to a read-only register");
|
---|
281 |
|
---|
282 | if (RCP_ALPHA == portion &&
|
---|
283 | RCP_DOT == op)
|
---|
284 | errors.set("dot used in alpha portion");
|
---|
285 | int i;
|
---|
286 | for (i = 0; i < args; i++) {
|
---|
287 | ConvertRegister(reg[i].reg, portion);
|
---|
288 | if (reg[i].reg.bits.finalOnly)
|
---|
289 | errors.set("final register used in general combiner");
|
---|
290 | if (RCP_RGB == portion &&
|
---|
291 | RCP_BLUE == reg[i].reg.bits.channel)
|
---|
292 | errors.set("blue register used in rgb portion");
|
---|
293 | if (RCP_ALPHA == portion &&
|
---|
294 | RCP_RGB == reg[i].reg.bits.channel)
|
---|
295 | errors.set("rgb register used in alpha portion");
|
---|
296 | if (i > 0 &&
|
---|
297 | GL_DISCARD_NV == reg[i].reg.bits.name)
|
---|
298 | errors.set("reading from discard");
|
---|
299 | }
|
---|
300 | }
|
---|