| 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 | } |
|---|