CrtInt CrtRender::LoadCgProgram( CrtChar * fileName, const CrtInt programType )
{
CrtChar fullFileName[CRT_MAX_NAME_SIZE];
CrtCpy( fullFileName, ShaderFilePrefix );
CrtCat( fullFileName, fileName );
CrtPrint(" Loading %s Shader From Binary \n", fullFileName );
// get the name extention
CrtChar * ext = CrtGetExtention( fullFileName );
if ( !CrtCmpIn( ext, ".cg" ) && !CrtCmpIn( ext, ".CG" ) )
{
CrtPrint("CrtRender::LoadCgProgram: Invalid File Name %s \n", fullFileName );
return -1;
}
// Load And Compile The Vertex Shader From File
if ( programType == CrtFragmentProgram )
{
CrtCpy( ext, ".cg" );
cgPrograms[NumCgPrograms] = cgCreateProgramFromFile(cgContext, CG_SOURCE, fullFileName, cgFragmentProfile, NULL, NULL);
}
else
{
CrtCpy( ext, ".cg" );
cgPrograms[NumCgPrograms] = cgCreateProgramFromFile(cgContext, CG_SOURCE, fullFileName, cgVertexProfile, "main", 0);
}
// Validate Success
if (cgPrograms[NumCgPrograms] == NULL)
{
// Check for a Cg Error, If So switch to FixedFunction
if ( ! CrtCheckForCgError() )
return -1;
// failed to load CgShader
CrtChar buff[CRT_MAX_NAME_SIZE];
sprintf(buff," Shader Load Failed %s \n", fileName );
return -1;
}
CrtPrint(" Shader ID %d \n", cgPrograms[NumCgPrograms] );
cgGLLoadProgram(cgPrograms[NumCgPrograms]);
NumCgPrograms ++;
return NumCgPrograms - 1;
}
CrtVoid CrtInitPaths()
{
CrtCpy( ShaderFilePrefix, "shaders/advanced/" );
CrtCpy( TextureFilePrefix, "images/" );
}
