private bool CreateGpuPrograms(ProgramSet programSet)
{
// Before we start we need to make sure that the pixel shader input
// parameters are the same as the vertex output, this required by
// shader models 4 and 5.
// This change may incrase the number of register used in older shader
// models - this is why the check is present here.
bool isVs4 = GpuProgramManager.Instance.IsSyntaxSupported("vs_4_0");
if (isVs4)
{
SynchronizePixelnToBeVertexOut(programSet);
}
//Grab the matching writer
string language = ShaderGenerator.Instance.TargetLangauge;
ProgramWriter programWriter = null;
if (this.programWritersMap.ContainsKey(language))
{
programWriter = this.programWritersMap[language];
}
else
{
programWriter = ProgramWriterManager.Instance.CreateProgramWriter(language);
this.programWritersMap.Add(language, programWriter);
}
ProgramProcessor programProcessor = null;
if (this.programProcessorMap.ContainsKey(language) == false)
{
throw new AxiomException("Could not find processor for language " + language);
}
programProcessor = this.programProcessorMap[language];
bool success;
//Call the pre creation of GPU programs method
success = programProcessor.PreCreateGpuPrograms(programSet);
if (success == false)
{
return(false);
}
//Create the vertex shader program
GpuProgram vsGpuProgram;
vsGpuProgram = CreateGpuProgram(programSet.CpuVertexProgram, programWriter, language,
ShaderGenerator.Instance.VertexShaderProfiles,
ShaderGenerator.Instance.VertexShaderProfilesList,
ShaderGenerator.Instance.ShaderChachePath);
if (vsGpuProgram == null)
{
return(false);
}
programSet.GpuVertexProgram = vsGpuProgram;
//update flags
programSet.GpuVertexProgram.IsSkeletalAnimationIncluded =
programSet.CpuVertexProgram.SkeletalAnimationIncluded;
//Create the fragment shader program.
GpuProgram psGpuProgram;
psGpuProgram = CreateGpuProgram(programSet.CpuFragmentProgram, programWriter, language,
ShaderGenerator.Instance.FragmentShaderProfiles,
ShaderGenerator.Instance.FragmentShaderProfilesList,
ShaderGenerator.Instance.ShaderChachePath);
if (psGpuProgram == null)
{
return(false);
}
programSet.GpuFragmentProgram = psGpuProgram;
//Call the post creation of GPU programs method.
success = programProcessor.PostCreateGpuPrograms(programSet);
if (success == false)
{
return(false);
}
return(true);
}
private GpuProgram CreateGpuProgram(Program shaderProgram, ProgramWriter programWriter, string language,
string profiles, string[] profilesList, string cachePath)
{
StreamWriter sourceCodeStringStream = null;
int programHashCode;
string programName;
//Generate source code
programWriter.WriteSourceCode(sourceCodeStringStream, shaderProgram);
programHashCode = sourceCodeStringStream.GetHashCode();
//Generate program name
programName = programHashCode.ToString();
if (shaderProgram.Type == GpuProgramType.Vertex)
{
programName += "_VS";
}
else if (shaderProgram.Type == GpuProgramType.Fragment)
{
programName += "_FS";
}
HighLevelGpuProgram gpuProgram;
//Try to get program by name
gpuProgram = (HighLevelGpuProgram)HighLevelGpuProgramManager.Instance.GetByName(programName);
//Case the program doesn't exist yet
if (gpuProgram == null)
{
//Create new GPU program.
gpuProgram = HighLevelGpuProgramManager.Instance.CreateProgram(programName,
ResourceGroupManager.
DefaultResourceGroupName, language,
shaderProgram.Type);
//Case cache directory specified -> create program from file
if (cachePath == string.Empty)
{
string programFullName = programName + "." + language;
string programFileName = cachePath + programFullName;
bool writeFile = true;
//Check if program file already exists
if (File.Exists(programFileName))
{
writeFile = true;
}
else
{
writeFile = false;
}
if (writeFile)
{
var outFile = new StreamWriter(programFileName);
outFile.Write(sourceCodeStringStream);
outFile.Close();
}
gpuProgram.SourceFile = programFullName;
}
else // no cache directory specified -> create program from system memory
{
//TODO
// gpuProgram.Source = sourceCodeStringStream;
}
var gpuParams = new Collections.NameValuePairList();
gpuParams.Add("entry_point", shaderProgram.EntryPointFunction.Name);
gpuProgram.SetParameters(gpuParams);
gpuParams.Clear();
// HLSL program requires specific target profile settings - we have to split the profile string.
if (language == "hlsl")
{
foreach (var it in profilesList)
{
if (GpuProgramManager.Instance.IsSyntaxSupported(it))
{
gpuParams.Add("target", it);
gpuProgram.SetParameters(gpuParams);
gpuParams.Clear();
break;
}
}
}
gpuParams.Add("profiles", profiles);
gpuProgram.SetParameters(gpuParams);
gpuProgram.Load();
//Case an error occurred
if (gpuProgram.HasCompileError)
{
gpuProgram = null;
return(gpuProgram);
}
//Add the created GPU prgram to local cache
if (gpuProgram.Type == GpuProgramType.Vertex)
{
this.vertexShaderMap[programName] = gpuProgram;
}
else if (gpuProgram.Type == GpuProgramType.Fragment)
{
this.fragmentShaderMap[programName] = gpuProgram;
}
}
return(gpuProgram);
}
private GpuProgram CreateGpuProgram( Program shaderProgram, ProgramWriter programWriter, string language,
string profiles, string[] profilesList, string cachePath )
{
StreamWriter sourceCodeStringStream = null;
int programHashCode;
string programName;
//Generate source code
programWriter.WriteSourceCode( sourceCodeStringStream, shaderProgram );
programHashCode = sourceCodeStringStream.GetHashCode();
//Generate program name
programName = programHashCode.ToString();
if ( shaderProgram.Type == GpuProgramType.Vertex )
{
programName += "_VS";
}
else if ( shaderProgram.Type == GpuProgramType.Fragment )
{
programName += "_FS";
}
HighLevelGpuProgram gpuProgram;
//Try to get program by name
gpuProgram = (HighLevelGpuProgram)HighLevelGpuProgramManager.Instance.GetByName( programName );
//Case the program doesn't exist yet
if ( gpuProgram == null )
{
//Create new GPU program.
gpuProgram = HighLevelGpuProgramManager.Instance.CreateProgram( programName,
ResourceGroupManager.
DefaultResourceGroupName, language,
shaderProgram.Type );
//Case cache directory specified -> create program from file
if ( cachePath == string.Empty )
{
string programFullName = programName + "." + language;
string programFileName = cachePath + programFullName;
bool writeFile = true;
//Check if program file already exists
if ( File.Exists( programFileName ) )
{
writeFile = true;
}
else
{
writeFile = false;
}
if ( writeFile )
{
var outFile = new StreamWriter( programFileName );
outFile.Write( sourceCodeStringStream );
outFile.Close();
}
gpuProgram.SourceFile = programFullName;
}
else // no cache directory specified -> create program from system memory
{
//TODO
// gpuProgram.Source = sourceCodeStringStream;
}
var gpuParams = new Collections.NameValuePairList();
gpuParams.Add( "entry_point", shaderProgram.EntryPointFunction.Name );
gpuProgram.SetParameters( gpuParams );
gpuParams.Clear();
// HLSL program requires specific target profile settings - we have to split the profile string.
if ( language == "hlsl" )
{
foreach ( var it in profilesList )
{
if ( GpuProgramManager.Instance.IsSyntaxSupported( it ) )
{
gpuParams.Add( "target", it );
gpuProgram.SetParameters( gpuParams );
gpuParams.Clear();
break;
}
}
}
gpuParams.Add( "profiles", profiles );
gpuProgram.SetParameters( gpuParams );
gpuProgram.Load();
//Case an error occurred
if ( gpuProgram.HasCompileError )
{
gpuProgram = null;
return gpuProgram;
}
//Add the created GPU prgram to local cache
if ( gpuProgram.Type == GpuProgramType.Vertex )
{
this.vertexShaderMap[ programName ] = gpuProgram;
}
else if ( gpuProgram.Type == GpuProgramType.Fragment )
{
this.fragmentShaderMap[ programName ] = gpuProgram;
}
}
return gpuProgram;
}