GPUProgram::GPUProgram(void)
{
cgSetErrorCallback(handleCgError);
context = cgCreateContext();
if (!cgIsContext(context)){
fprintf(stderr, "Cg Error: cannot create context!\n");
exit(1);
}
_chooseProfiles();
}
void cgtk::load_fragment_program(CGprogram &f_program,char *shader_path, char *program_name)
{
assert(cgIsContext(context));
f_program = cgCreateProgramFromFile(context, CG_SOURCE, shader_path,
fragmentProfile,program_name, NULL);
if (!cgIsProgramCompiled(f_program))
cgCompileProgram(f_program);
cgGLEnableProfile(fragmentProfile);
cgGLLoadProgram(f_program);
cgGLDisableProfile(fragmentProfile);
}
void CGShader::init(const char *filename, const char *funcname, const char **options)
{
char* gpopt[3]={0,"-profileopts Vertices=16",0};
assert(cgIsContext(*m_pCgContext));
//if (*m_pCGProfile == cgGLGetLatestProfile(CG_GL_GEOMETRY)){
// options = &gpopt[0];
//}
m_program = cgCreateProgramFromFile(*m_pCgContext, CG_SOURCE, filename, *m_pCGProfile, funcname, (const char**)gpopt);
if (!cgIsProgramCompiled(m_program))
cgCompileProgram(m_program);
cgGLLoadProgram(m_program);
}
void cgtk::load_vertex_program(CGprogram &v_program,char *shader_path, char *program_name)
{
assert(cgIsContext(context));
v_program = cgCreateProgramFromFile(context, CG_SOURCE,shader_path,
vertexProfile,program_name, NULL);
if (!cgIsProgramCompiled(v_program))
cgCompileProgram(v_program);
cgGLEnableProfile(vertexProfile);
cgGLLoadProgram(v_program);
cgGLDisableProfile(vertexProfile);
}
