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