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5098 | clevermous | 1 | #include "zgl.h" |
2 | |||
3 | static char *op_table_str[]= |
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4 | { |
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5 | #define ADD_OP(a,b,c) "gl" #a " " #c, |
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6 | |||
7 | #include "opinfo.h" |
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8 | }; |
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9 | |||
10 | static void (*op_table_func[])(GLContext *,GLParam *)= |
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11 | { |
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12 | #define ADD_OP(a,b,c) glop ## a , |
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13 | |||
14 | #include "opinfo.h" |
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15 | }; |
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16 | |||
17 | static int op_table_size[]= |
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18 | { |
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19 | #define ADD_OP(a,b,c) b + 1 , |
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20 | |||
21 | #include "opinfo.h" |
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22 | }; |
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23 | |||
24 | |||
25 | |||
26 | static GLList *find_list(GLContext *c,unsigned int list) |
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27 | { |
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28 | return c->shared_state.lists[list]; |
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29 | } |
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30 | |||
31 | static void delete_list(GLContext *c,int list) |
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32 | { |
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33 | GLParamBuffer *pb,*pb1; |
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34 | GLList *l; |
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35 | |||
36 | l=find_list(c,list); |
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37 | assert(l != NULL); |
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38 | |||
39 | /* free param buffer */ |
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40 | pb=l->first_op_buffer; |
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41 | while (pb!=NULL) { |
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42 | pb1=pb->next; |
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43 | gl_free(pb); |
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44 | pb=pb1; |
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45 | } |
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46 | |||
47 | gl_free(l); |
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48 | c->shared_state.lists[list]=NULL; |
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49 | } |
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50 | |||
51 | static GLList *alloc_list(GLContext *c,int list) |
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52 | { |
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53 | GLList *l; |
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54 | GLParamBuffer *ob; |
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55 | |||
56 | l=gl_zalloc(sizeof(GLList)); |
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57 | ob=gl_zalloc(sizeof(GLParamBuffer)); |
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58 | |||
59 | ob->next=NULL; |
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60 | l->first_op_buffer=ob; |
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61 | |||
62 | ob->ops[0].op=OP_EndList; |
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63 | |||
64 | c->shared_state.lists[list]=l; |
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65 | return l; |
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66 | } |
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67 | |||
68 | |||
69 | void gl_print_op(FILE *f,GLParam *p) |
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70 | { |
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71 | int op; |
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72 | char *s; |
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73 | |||
74 | op=p[0].op; |
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75 | p++; |
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76 | s=op_table_str[op]; |
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77 | while (*s != 0) { |
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78 | if (*s == '%') { |
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79 | s++; |
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80 | switch (*s++) { |
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81 | case 'f': |
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82 | fprintf(f,"%g",p[0].f); |
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83 | break; |
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84 | default: |
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85 | fprintf(f,"%d",p[0].i); |
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86 | break; |
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87 | } |
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88 | p++; |
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89 | } else { |
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90 | fputc(*s,f); |
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91 | s++; |
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92 | } |
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93 | } |
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94 | fprintf(f,"\n"); |
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95 | } |
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96 | |||
97 | |||
98 | void gl_compile_op(GLContext *c,GLParam *p) |
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99 | { |
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100 | int op,op_size; |
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101 | GLParamBuffer *ob,*ob1; |
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102 | int index,i; |
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103 | |||
104 | op=p[0].op; |
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105 | op_size=op_table_size[op]; |
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106 | index=c->current_op_buffer_index; |
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107 | ob=c->current_op_buffer; |
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108 | |||
109 | /* we should be able to add a NextBuffer opcode */ |
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110 | if ((index + op_size) > (OP_BUFFER_MAX_SIZE-2)) { |
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111 | |||
112 | ob1=gl_zalloc(sizeof(GLParamBuffer)); |
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113 | ob1->next=NULL; |
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114 | |||
115 | ob->next=ob1; |
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116 | ob->ops[index].op=OP_NextBuffer; |
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117 | ob->ops[index+1].p=(void *)ob1; |
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118 | |||
119 | c->current_op_buffer=ob1; |
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120 | ob=ob1; |
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121 | index=0; |
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122 | } |
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123 | |||
124 | for(i=0;i |
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125 | ob->ops[index]=p[i]; |
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126 | index++; |
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127 | } |
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128 | c->current_op_buffer_index=index; |
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129 | } |
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130 | |||
131 | void gl_add_op(GLParam *p) |
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132 | { |
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133 | GLContext *c=gl_get_context(); |
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134 | int op; |
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135 | |||
136 | op=p[0].op; |
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137 | if (c->exec_flag) { |
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138 | op_table_func[op](c,p); |
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139 | } |
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140 | if (c->compile_flag) { |
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141 | gl_compile_op(c,p); |
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142 | } |
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143 | if (c->print_flag) { |
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144 | gl_print_op(stderr,p); |
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145 | } |
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146 | } |
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147 | |||
148 | /* this opcode is never called directly */ |
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149 | void glopEndList(GLContext *c,GLParam *p) |
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150 | { |
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151 | assert(0); |
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152 | } |
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153 | |||
154 | /* this opcode is never called directly */ |
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155 | void glopNextBuffer(GLContext *c,GLParam *p) |
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156 | { |
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157 | assert(0); |
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158 | } |
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159 | |||
160 | |||
161 | void glopCallList(GLContext *c,GLParam *p) |
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162 | { |
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163 | GLList *l; |
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164 | int list,op; |
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165 | |||
166 | list=p[1].ui; |
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167 | l=find_list(c,list); |
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168 | if (l == NULL) gl_fatal_error("list %d not defined",list); |
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169 | p=l->first_op_buffer->ops; |
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170 | |||
171 | while (1) { |
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172 | op=p[0].op; |
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173 | if (op == OP_EndList) break; |
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174 | if (op == OP_NextBuffer) { |
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175 | p=(GLParam *)p[1].p; |
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176 | } else { |
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177 | op_table_func[op](c,p); |
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178 | p+=op_table_size[op]; |
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179 | } |
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180 | } |
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181 | } |
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182 | |||
183 | |||
184 | |||
185 | void glNewList(unsigned int list,int mode) |
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186 | { |
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187 | GLList *l; |
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188 | GLContext *c=gl_get_context(); |
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189 | |||
190 | assert(mode == GL_COMPILE || mode == GL_COMPILE_AND_EXECUTE); |
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191 | assert(c->compile_flag == 0); |
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192 | |||
193 | l=find_list(c,list); |
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194 | if (l!=NULL) delete_list(c,list); |
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195 | l=alloc_list(c,list); |
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196 | |||
197 | c->current_op_buffer=l->first_op_buffer; |
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198 | c->current_op_buffer_index=0; |
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199 | |||
200 | c->compile_flag=1; |
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201 | c->exec_flag=(mode == GL_COMPILE_AND_EXECUTE); |
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202 | } |
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203 | |||
204 | void glEndList(void) |
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205 | { |
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206 | GLContext *c=gl_get_context(); |
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207 | GLParam p[1]; |
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208 | |||
209 | assert(c->compile_flag == 1); |
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210 | |||
211 | /* end of list */ |
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212 | p[0].op=OP_EndList; |
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213 | gl_compile_op(c,p); |
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214 | |||
215 | c->compile_flag=0; |
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216 | c->exec_flag=1; |
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217 | } |
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218 | |||
219 | int glIsList(unsigned int list) |
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220 | { |
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221 | GLContext *c=gl_get_context(); |
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222 | GLList *l; |
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223 | l=find_list(c,list); |
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224 | return (l != NULL); |
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225 | } |
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226 | |||
227 | unsigned int glGenLists(int range) |
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228 | { |
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229 | GLContext *c=gl_get_context(); |
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230 | int count,i,list; |
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231 | GLList **lists; |
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232 | |||
233 | lists=c->shared_state.lists; |
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234 | count=0; |
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235 | for(i=0;i |
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236 | if (lists[i]==NULL) { |
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237 | count++; |
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238 | if (count == range) { |
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239 | list=i-range+1; |
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240 | for(i=0;i |
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241 | alloc_list(c,list+i); |
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242 | } |
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243 | return list; |
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244 | } |
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245 | } else { |
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246 | count=0; |
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247 | } |
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248 | } |
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249 | return 0; |
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250 | } |
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251 |