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- #include "zgl.h"
-
- static char *op_table_str[]=
- {
- #define ADD_OP(a,b,c) "gl" #a " " #c,
-
- #include "opinfo.h"
- };
-
- static void (*op_table_func[])(GLContext *,GLParam *)=
- {
- #define ADD_OP(a,b,c) glop ## a ,
-
- #include "opinfo.h"
- };
-
- static int op_table_size[]=
- {
- #define ADD_OP(a,b,c) b + 1 ,
-
- #include "opinfo.h"
- };
-
-
- GLContext *gl_get_context(void)
- {
- return gl_ctx;
- }
-
- static GLList *find_list(GLContext *c,unsigned int list)
- {
- return c->shared_state.lists[list];
- }
-
- static void delete_list(GLContext *c,int list)
- {
- GLParamBuffer *pb,*pb1;
- GLList *l;
-
- l=find_list(c,list);
- assert(l != NULL);
-
- /* free param buffer */
- pb=l->first_op_buffer;
- while (pb!=NULL) {
- pb1=pb->next;
- gl_free(pb);
- pb=pb1;
- }
-
- gl_free(l);
- c->shared_state.lists[list]=NULL;
- }
-
- static GLList *alloc_list(GLContext *c,int list)
- {
- GLList *l;
- GLParamBuffer *ob;
-
- l=gl_zalloc(sizeof(GLList));
- ob=gl_zalloc(sizeof(GLParamBuffer));
-
- ob->next=NULL;
- l->first_op_buffer=ob;
-
- ob->ops[0].op=OP_EndList;
-
- c->shared_state.lists[list]=l;
- return l;
- }
-
-
- void gl_print_op(FILE *f,GLParam *p)
- {
- int op;
- char *s;
-
- op=p[0].op;
- p++;
- s=op_table_str[op];
- while (*s != 0) {
- if (*s == '%') {
- s++;
- switch (*s++) {
- case 'f':
- fprintf(f,"%g",p[0].f);
- break;
- default:
- fprintf(f,"%d",p[0].i);
- break;
- }
- p++;
- } else {
- fputc(*s,f);
- s++;
- }
- }
- fprintf(f,"\n");
- }
-
-
- void gl_compile_op(GLContext *c,GLParam *p)
- {
- int op,op_size;
- GLParamBuffer *ob,*ob1;
- int index,i;
-
- op=p[0].op;
- op_size=op_table_size[op];
- index=c->current_op_buffer_index;
- ob=c->current_op_buffer;
-
- /* we should be able to add a NextBuffer opcode */
- if ((index + op_size) > (OP_BUFFER_MAX_SIZE-2)) {
-
- ob1=gl_zalloc(sizeof(GLParamBuffer));
- ob1->next=NULL;
-
- ob->next=ob1;
- ob->ops[index].op=OP_NextBuffer;
- ob->ops[index+1].p=(void *)ob1;
-
- c->current_op_buffer=ob1;
- ob=ob1;
- index=0;
- }
-
- for(i=0;i<op_size;i++) {
- ob->ops[index]=p[i];
- index++;
- }
- c->current_op_buffer_index=index;
- }
-
- void gl_add_op(GLParam *p)
- {
- GLContext *c=gl_get_context();
- int op;
-
- op=p[0].op;
- if (c->exec_flag) {
- op_table_func[op](c,p);
- }
- if (c->compile_flag) {
- gl_compile_op(c,p);
- }
- if (c->print_flag) {
- gl_print_op(stderr,p);
- }
- }
-
- /* this opcode is never called directly */
- void glopEndList(GLContext *c,GLParam *p)
- {
- assert(0);
- }
-
- /* this opcode is never called directly */
- void glopNextBuffer(GLContext *c,GLParam *p)
- {
- assert(0);
- }
-
-
- void glopCallList(GLContext *c,GLParam *p)
- {
- GLList *l;
- int list,op;
-
- list=p[1].ui;
- l=find_list(c,list);
- if (l == NULL) gl_fatal_error("list %d not defined",list);
- p=l->first_op_buffer->ops;
-
- while (1) {
- op=p[0].op;
- if (op == OP_EndList) break;
- if (op == OP_NextBuffer) {
- p=(GLParam *)p[1].p;
- } else {
- op_table_func[op](c,p);
- p+=op_table_size[op];
- }
- }
- }
-
-
-
- void glNewList(unsigned int list,int mode)
- {
- GLList *l;
- GLContext *c=gl_get_context();
-
- assert(mode == GL_COMPILE || mode == GL_COMPILE_AND_EXECUTE);
- assert(c->compile_flag == 0);
-
- l=find_list(c,list);
- if (l!=NULL) delete_list(c,list);
- l=alloc_list(c,list);
-
- c->current_op_buffer=l->first_op_buffer;
- c->current_op_buffer_index=0;
-
- c->compile_flag=1;
- c->exec_flag=(mode == GL_COMPILE_AND_EXECUTE);
- }
-
- void glEndList(void)
- {
- GLContext *c=gl_get_context();
- GLParam p[1];
-
- assert(c->compile_flag == 1);
-
- /* end of list */
- p[0].op=OP_EndList;
- gl_compile_op(c,p);
-
- c->compile_flag=0;
- c->exec_flag=1;
- }
-
- int glIsList(unsigned int list)
- {
- GLContext *c=gl_get_context();
- GLList *l;
- l=find_list(c,list);
- return (l != NULL);
- }
-
- unsigned int glGenLists(int range)
- {
- GLContext *c=gl_get_context();
- int count,i,list;
- GLList **lists;
-
- lists=c->shared_state.lists;
- count=0;
- for(i=0;i<MAX_DISPLAY_LISTS;i++) {
- if (lists[i]==NULL) {
- count++;
- if (count == range) {
- list=i-range+1;
- for(i=0;i<range;i++) {
- alloc_list(c,list+i);
- }
- return (unsigned int)list;
- }
- } else {
- count=0;
- }
- }
- return 0;
- }
-
-