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1901 | serge | 1 | /* |
2 | * Mesa 3-D graphics library |
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3 | * Version: 7.1 |
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4 | * |
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5 | * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
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6 | * |
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7 | * Permission is hereby granted, free of charge, to any person obtaining a |
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8 | * copy of this software and associated documentation files (the "Software"), |
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9 | * to deal in the Software without restriction, including without limitation |
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10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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11 | * and/or sell copies of the Software, and to permit persons to whom the |
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12 | * Software is furnished to do so, subject to the following conditions: |
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13 | * |
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14 | * The above copyright notice and this permission notice shall be included |
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15 | * in all copies or substantial portions of the Software. |
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16 | * |
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17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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20 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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21 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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23 | */ |
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24 | |||
25 | #define DEBUG_PARSING 0 |
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26 | |||
27 | /** |
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28 | * \file arbprogparse.c |
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29 | * ARB_*_program parser core |
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30 | * \author Karl Rasche |
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31 | */ |
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32 | |||
33 | /** |
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34 | Notes on program parameters, etc. |
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35 | |||
36 | The instructions we emit will use six kinds of source registers: |
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37 | |||
38 | PROGRAM_INPUT - input registers |
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39 | PROGRAM_TEMPORARY - temp registers |
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40 | PROGRAM_ADDRESS - address/indirect register |
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41 | PROGRAM_SAMPLER - texture sampler |
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42 | PROGRAM_CONSTANT - indexes into program->Parameters, a known constant/literal |
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43 | PROGRAM_STATE_VAR - indexes into program->Parameters, and may actually be: |
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44 | + a state variable, like "state.fog.color", or |
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45 | + a pointer to a "program.local[k]" parameter, or |
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46 | + a pointer to a "program.env[k]" parameter |
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47 | |||
48 | Basically, all the program.local[] and program.env[] values will get mapped |
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49 | into the unified gl_program->Parameters array. This solves the problem of |
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50 | having three separate program parameter arrays. |
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51 | */ |
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52 | |||
53 | |||
54 | #include "main/glheader.h" |
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55 | #include "main/imports.h" |
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56 | #include "main/context.h" |
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57 | #include "main/mtypes.h" |
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58 | #include "arbprogparse.h" |
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59 | #include "programopt.h" |
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60 | #include "prog_parameter.h" |
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61 | #include "prog_statevars.h" |
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62 | #include "prog_instruction.h" |
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63 | #include "program_parser.h" |
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64 | |||
65 | |||
66 | void |
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67 | _mesa_parse_arb_fragment_program(struct gl_context* ctx, GLenum target, |
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68 | const GLvoid *str, GLsizei len, |
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69 | struct gl_fragment_program *program) |
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70 | { |
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71 | struct gl_program prog; |
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72 | struct asm_parser_state state; |
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73 | GLuint i; |
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74 | |||
75 | ASSERT(target == GL_FRAGMENT_PROGRAM_ARB); |
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76 | |||
77 | memset(&prog, 0, sizeof(prog)); |
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78 | memset(&state, 0, sizeof(state)); |
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79 | state.prog = &prog; |
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80 | |||
81 | if (!_mesa_parse_arb_program(ctx, target, (const GLubyte*) str, len, |
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82 | &state)) { |
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83 | /* Error in the program. Just return. */ |
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84 | return; |
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85 | } |
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86 | |||
87 | if (program->Base.String != NULL) |
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88 | free(program->Base.String); |
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89 | |||
90 | /* Copy the relevant contents of the arb_program struct into the |
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91 | * fragment_program struct. |
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92 | */ |
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93 | program->Base.String = prog.String; |
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94 | program->Base.NumInstructions = prog.NumInstructions; |
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95 | program->Base.NumTemporaries = prog.NumTemporaries; |
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96 | program->Base.NumParameters = prog.NumParameters; |
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97 | program->Base.NumAttributes = prog.NumAttributes; |
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98 | program->Base.NumAddressRegs = prog.NumAddressRegs; |
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99 | program->Base.NumNativeInstructions = prog.NumNativeInstructions; |
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100 | program->Base.NumNativeTemporaries = prog.NumNativeTemporaries; |
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101 | program->Base.NumNativeParameters = prog.NumNativeParameters; |
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102 | program->Base.NumNativeAttributes = prog.NumNativeAttributes; |
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103 | program->Base.NumNativeAddressRegs = prog.NumNativeAddressRegs; |
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104 | program->Base.NumAluInstructions = prog.NumAluInstructions; |
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105 | program->Base.NumTexInstructions = prog.NumTexInstructions; |
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106 | program->Base.NumTexIndirections = prog.NumTexIndirections; |
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107 | program->Base.NumNativeAluInstructions = prog.NumAluInstructions; |
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108 | program->Base.NumNativeTexInstructions = prog.NumTexInstructions; |
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109 | program->Base.NumNativeTexIndirections = prog.NumTexIndirections; |
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110 | program->Base.InputsRead = prog.InputsRead; |
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111 | program->Base.OutputsWritten = prog.OutputsWritten; |
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112 | program->Base.IndirectRegisterFiles = prog.IndirectRegisterFiles; |
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113 | for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++) { |
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114 | program->Base.TexturesUsed[i] = prog.TexturesUsed[i]; |
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115 | if (prog.TexturesUsed[i]) |
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116 | program->Base.SamplersUsed |= (1 << i); |
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117 | } |
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118 | program->Base.ShadowSamplers = prog.ShadowSamplers; |
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119 | switch (state.option.Fog) { |
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120 | case OPTION_FOG_EXP: program->FogOption = GL_EXP; break; |
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121 | case OPTION_FOG_EXP2: program->FogOption = GL_EXP2; break; |
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122 | case OPTION_FOG_LINEAR: program->FogOption = GL_LINEAR; break; |
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123 | default: program->FogOption = GL_NONE; break; |
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124 | } |
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125 | program->OriginUpperLeft = state.option.OriginUpperLeft; |
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126 | program->PixelCenterInteger = state.option.PixelCenterInteger; |
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127 | |||
128 | program->UsesKill = state.fragment.UsesKill; |
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129 | |||
130 | if (program->FogOption) |
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131 | program->Base.InputsRead |= FRAG_BIT_FOGC; |
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132 | |||
133 | if (program->Base.Instructions) |
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134 | free(program->Base.Instructions); |
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135 | program->Base.Instructions = prog.Instructions; |
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136 | |||
137 | if (program->Base.Parameters) |
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138 | _mesa_free_parameter_list(program->Base.Parameters); |
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139 | program->Base.Parameters = prog.Parameters; |
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140 | |||
141 | /* Append fog instructions now if the program has "OPTION ARB_fog_exp" |
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142 | * or similar. We used to leave this up to drivers, but it appears |
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143 | * there's no hardware that wants to do fog in a discrete stage separate |
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144 | * from the fragment shader. |
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145 | */ |
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146 | if (program->FogOption != GL_NONE) { |
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147 | _mesa_append_fog_code(ctx, program); |
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148 | program->FogOption = GL_NONE; |
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149 | } |
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150 | |||
151 | #if DEBUG_FP |
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152 | printf("____________Fragment program %u ________\n", program->Base.Id); |
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153 | _mesa_print_program(&program->Base); |
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154 | #endif |
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155 | } |
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156 | |||
157 | |||
158 | |||
159 | /** |
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160 | * Parse the vertex program string. If success, update the given |
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161 | * vertex_program object with the new program. Else, leave the vertex_program |
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162 | * object unchanged. |
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163 | */ |
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164 | void |
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165 | _mesa_parse_arb_vertex_program(struct gl_context *ctx, GLenum target, |
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166 | const GLvoid *str, GLsizei len, |
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167 | struct gl_vertex_program *program) |
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168 | { |
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169 | struct gl_program prog; |
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170 | struct asm_parser_state state; |
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171 | |||
172 | ASSERT(target == GL_VERTEX_PROGRAM_ARB); |
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173 | |||
174 | memset(&prog, 0, sizeof(prog)); |
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175 | memset(&state, 0, sizeof(state)); |
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176 | state.prog = &prog; |
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177 | |||
178 | if (!_mesa_parse_arb_program(ctx, target, (const GLubyte*) str, len, |
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179 | &state)) { |
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180 | _mesa_error(ctx, GL_INVALID_OPERATION, "glProgramString(bad program)"); |
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181 | return; |
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182 | } |
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183 | |||
184 | if (program->Base.String != NULL) |
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185 | free(program->Base.String); |
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186 | |||
187 | /* Copy the relevant contents of the arb_program struct into the |
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188 | * vertex_program struct. |
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189 | */ |
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190 | program->Base.String = prog.String; |
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191 | program->Base.NumInstructions = prog.NumInstructions; |
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192 | program->Base.NumTemporaries = prog.NumTemporaries; |
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193 | program->Base.NumParameters = prog.NumParameters; |
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194 | program->Base.NumAttributes = prog.NumAttributes; |
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195 | program->Base.NumAddressRegs = prog.NumAddressRegs; |
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196 | program->Base.NumNativeInstructions = prog.NumNativeInstructions; |
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197 | program->Base.NumNativeTemporaries = prog.NumNativeTemporaries; |
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198 | program->Base.NumNativeParameters = prog.NumNativeParameters; |
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199 | program->Base.NumNativeAttributes = prog.NumNativeAttributes; |
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200 | program->Base.NumNativeAddressRegs = prog.NumNativeAddressRegs; |
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201 | program->Base.InputsRead = prog.InputsRead; |
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202 | program->Base.OutputsWritten = prog.OutputsWritten; |
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203 | program->Base.IndirectRegisterFiles = prog.IndirectRegisterFiles; |
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204 | program->IsPositionInvariant = (state.option.PositionInvariant) |
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205 | ? GL_TRUE : GL_FALSE; |
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206 | |||
207 | if (program->Base.Instructions) |
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208 | free(program->Base.Instructions); |
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209 | program->Base.Instructions = prog.Instructions; |
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210 | |||
211 | if (program->Base.Parameters) |
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212 | _mesa_free_parameter_list(program->Base.Parameters); |
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213 | program->Base.Parameters = prog.Parameters; |
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214 | |||
215 | #if DEBUG_VP |
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216 | printf("____________Vertex program %u __________\n", program->Base.Id); |
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217 | _mesa_print_program(&program->Base); |
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218 | #endif |
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219 | }><>> |