source/glsl/builtin.cpp

   1 #include "builtin.h"
   2 #include "generate.h"
   3 #include "parser.h"
   4
   5 using namespace std;
   6
   7 namespace {
   8
   9 const char builtins_src[] =
  10         "#pragma MSP stage(vertex)\n"
  11         "out gl_PerVertex {\n"
  12         "  vec4 gl_Position;\n"
  13         "  float gl_ClipDistance[];\n"
  14         "};\n"
  15         "#pragma MSP stage(geometry)\n"
  16         "in gl_PerVertex {\n"
  17         "  vec4 gl_Position;\n"
  18         "  float gl_ClipDistance[];\n"
  19         "} gl_in[];\n"
  20         "out gl_PerVertex {\n"
  21         "  vec4 gl_Position;\n"
  22         "  float gl_ClipDistance[];\n"
  23         "};\n";
  24
  25 }
  26
  27 namespace Msp {
  28 namespace GL {
  29 namespace SL {
  30
  31 Module *get_builtins_module()
  32 {
  33         static RefPtr<Module> builtins_module;
  34         static bool initialized = false;
  35         if(!initialized)
  36         {
  37                 initialized = true;
  38
  39                 Parser parser;
  40                 Module *module = new Module(parser.parse(builtins_src, "<builtin>"));
  41                 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
  42                 {
  43                         VariableResolver().apply(*i);
  44                         for(map<string, VariableDeclaration *>::iterator j=i->content.variables.begin(); j!=i->content.variables.end(); ++j)
  45                                 j->second->linked_declaration = j->second;
  46                 }
  47
  48                 builtins_module = module;
  49         }
  50         return builtins_module.get();
  51 }
  52
  53 Stage *get_builtins(Stage::Type type)
  54 {
  55         Module *module = get_builtins_module();
  56         if(!module)
  57                 return 0;
  58
  59         for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
  60                 if(i->type==type)
  61                         return &*i;
  62         return 0;
  63 }
  64
  65 } // namespace SL
  66 } // namespace GL
  67 } // namespace Msp