#include <msp/core/application.h>
#include <msp/core/getopt.h>
#include <msp/gl/glsl/compiler.h>
+#include <msp/gl/glsl/glsl_error.h>
#include <msp/io/print.h>
+#include <msp/strings/utils.h>
class GlslCompiler: public Msp::RegisteredApplication<GlslCompiler>
{
private:
std::string source_fn;
+ std::map<std::string, int> spec_values;
bool parse_only;
bool combined;
Msp::GL::SL::Stage::Type stage;
dump_ast(false)
{
string stage_str;
+ vector<string> spec_values_in;
GetOpt getopt;
getopt.add_option('c', "combined", combined, GetOpt::NO_ARG).set_help("Output combined GLSL");
getopt.add_option('a', "dump-ast", dump_ast, GetOpt::NO_ARG).set_help("Dump AST for debugging");
getopt.add_option('p', "parse_only", parse_only, GetOpt::NO_ARG).set_help("Only parse the loaded source, don't compile");
+ getopt.add_option('e', "specialize", spec_values_in, GetOpt::REQUIRED_ARG).set_help("Set specialization constant", "NAME:VALUE");
getopt.add_option('s', "stage", stage_str, GetOpt::REQUIRED_ARG).set_help("Output GLSL for STAGE", "STAGE");
getopt.add_argument("source", source_fn, GetOpt::REQUIRED_ARG).set_help("GLSL file to compile");
getopt(argc, argv);
stage = GL::SL::Stage::FRAGMENT;
else if(!dump_ast)
combined = true;
+
+ for(vector<string>::const_iterator i=spec_values_in.begin(); i!=spec_values_in.end(); ++i)
+ {
+ unsigned colon = i->find(':');
+ if(colon==string::npos || colon==0 || colon+1>=i->size())
+ throw usage_error("Invalid specialization value");
+
+ string value_str = i->substr(colon+1);
+ int value;
+ if(isnumrc(value_str))
+ value = lexical_cast<int>(value_str);
+ else
+ value = lexical_cast<bool>(value_str);
+ spec_values[i->substr(0, colon)] = value;
+ }
}
int GlslCompiler::main()
GL::SL::Compiler compiler(GL::SL::Features::all());
IO::File file(source_fn);
compiler.load_source(file, source_fn);
+ compiler.specialize(spec_values);
if(!parse_only)
- compiler.compile(GL::SL::Compiler::PROGRAM);
+ {
+ try
+ {
+ compiler.compile(GL::SL::Compiler::PROGRAM);
+ }
+ catch(const GL::SL::invalid_shader_source &exc)
+ {
+ if(!dump_ast)
+ throw;
+
+ IO::print("Compilation resulted in errors:\n%s\n", exc.what());
+ combined = false;
+ stage = GL::SL::Stage::SHARED;
+ }
+ }
if(dump_ast)
{