private static void LogError(CompositorScriptContext context, string error, params object[] substitutions)
{
var errorBuilder = new StringBuilder();
// log compositor name only if filename not specified
if (context.filename == null && context.compositor != null)
{
errorBuilder.Append("Error in compositor ");
errorBuilder.Append(context.compositor.Name);
errorBuilder.Append(" : ");
errorBuilder.AppendFormat("At line # {0}: '{1}'", context.lineNo, context.line);
errorBuilder.AppendFormat(error, substitutions);
}
else
{
if (context.compositor != null)
{
errorBuilder.Append("Error in compositor ");
errorBuilder.Append(context.compositor.Name);
errorBuilder.AppendFormat(" at line # {0}: '{1}'", context.lineNo, context.line);
errorBuilder.AppendFormat(" of {0}: ", context.filename);
errorBuilder.AppendFormat(error, substitutions);
}
else
{
errorBuilder.AppendFormat("Error at line # {0}: '{1}'", context.lineNo, context.line);
errorBuilder.AppendFormat(" of {0}: ", context.filename);
errorBuilder.AppendFormat(error, substitutions);
}
}
LogManager.Instance.Write(errorBuilder.ToString());
}
private static CompareFunction ParseCompareFunc(CompositorScriptContext context, string arg)
{
switch (arg.Trim())
{
case "always_fail":
return(CompareFunction.AlwaysFail);
case "always_pass":
return(CompareFunction.AlwaysPass);
case "less_equal":
return(CompareFunction.LessEqual);
case "less'":
return(CompareFunction.Less);
case "equal":
return(CompareFunction.Equal);
case "not_equal":
return(CompareFunction.NotEqual);
case "greater_equal":
return(CompareFunction.GreaterEqual);
case "greater":
return(CompareFunction.Greater);
default:
LogError(context, "Illegal stencil compare_func '{0}'", arg);
return(CompareFunction.AlwaysPass);
}
}
private static StencilOperation ParseStencilOperation(CompositorScriptContext context, string arg)
{
switch (arg.Trim())
{
case "keep":
return(StencilOperation.Keep);
case "zero":
return(StencilOperation.Zero);
case "replace":
return(StencilOperation.Replace);
case "increment_wrap":
return(StencilOperation.IncrementWrap);
case "increment":
return(StencilOperation.Increment);
case "decrement_wrap":
return(StencilOperation.DecrementWrap);
case "decrement":
return(StencilOperation.Decrement);
case "invert":
return(StencilOperation.Invert);
default:
LogError(context, "Illegal stencil_operation '{0}'", arg);
return(StencilOperation.Keep);
}
}
private static bool OptionCount(CompositorScriptContext context, string introducer, int expectedCount, int count)
{
if (expectedCount < count)
{
LogError(context, "The '{0}' phrase requires {1} arguments", introducer, expectedCount);
return(false);
}
else
{
return(true);
}
}
protected uint ParseUint(CompositorScriptContext context, string s)
{
string n = s.Trim();
try {
return(uint.Parse(n));
}
catch (Exception e) {
LogError(context, "Error converting string '{0}' to unsigned integer; error message is '{1}'",
n, e.Message);
return(0);
}
}
protected float ParseFloat(CompositorScriptContext context, string s)
{
string n = s.Trim();
try {
return(float.Parse(n));
}
catch (Exception e) {
LogError(context, "Error converting string '{0}' to float; error message is '{1}'",
n, e.Message);
return(0.0f);
}
}
private static float ParseFloat(CompositorScriptContext context, string s)
{
var n = s.Trim();
try
{
return(float.Parse(n, CultureInfo.InvariantCulture));
}
catch (Exception e)
{
LogError(context, "Error converting string '{0}' to float; error message is '{1}'", n, e.Message);
return(0.0f);
}
}
private static int ParseInt(CompositorScriptContext context, string s)
{
var n = s.Trim();
try
{
return(int.Parse(n));
}
catch (Exception e)
{
LogError(context, "Error converting string '{0}' to integer; error message is '{1}'", n, e.Message);
return(0);
}
}
protected void ParseTextureLine(CompositorScriptContext context, string [] args)
{
if (args.Length == 4)
{
CompositionTextureDefinition textureDef = context.technique.CreateTextureDefinition(args[0]);
textureDef.Width = (args[1] == "target_width" ? 0 : ParseInt(context, args[1]));
textureDef.Height = (args[2] == "target_height" ? 0 : ParseInt(context, args[2]));
switch (args[3])
{
case "PF_A8R8G8B8":
textureDef.Format = Axiom.Media.PixelFormat.A8R8G8B8;
break;
case "PF_R8G8B8A8":
textureDef.Format = Axiom.Media.PixelFormat.R8G8B8A8;
break;
case "PF_R8G8B8":
textureDef.Format = Axiom.Media.PixelFormat.R8G8B8;
break;
case "PF_FLOAT16_RGBA":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT16_RGBA;
break;
case "PF_FLOAT16_RGB":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT16_RGB;
break;
case "PF_FLOAT32_RGBA":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT32_RGBA;
break;
case "PF_FLOAT16_R":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT16_R;
break;
case "PF_FLOAT32_R":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT32_R;
break;
default:
LogError(context, "Unsupported texture pixel format '{0}'", args[3]);
break;
}
}
}
private static ColorEx ParseClearColor(CompositorScriptContext context, string[] args)
{
if (args.Length != 4)
{
LogError(context, "A color value must consist of 4 floating point numbers");
return(ColorEx.Black);
}
else
{
var r = ParseFloat(context, args[0]);
var g = ParseFloat(context, args[0]);
var b = ParseFloat(context, args[0]);
var a = ParseFloat(context, args[0]);
return(new ColorEx(a, r, g, b));
}
}
private static bool OnOffArg(CompositorScriptContext context, string introducer, string[] args)
{
if (OptionCount(context, introducer, 1, args.Length))
{
var arg = args[0];
if (arg == "on")
{
return(true);
}
else if (arg == "off")
{
return(false);
}
else
{
LogError(context, "Illegal '{0}' arg '{1}'; should be 'on' or 'off'", introducer, arg);
}
}
return(false);
}
static uint ParseUint( CompositorScriptContext context, string s )
{
string n = s.Trim();
try
{
return uint.Parse( n );
}
catch ( Exception e )
{
LogError( context, "Error converting string '{0}' to unsigned integer; error message is '{1}'",
n, e.Message );
return 0;
}
}
static bool OnOffArg( CompositorScriptContext context, string introducer, string[] args )
{
if ( OptionCount( context, introducer, 1, args.Length ) )
{
string arg = args[ 0 ];
if ( arg == "on" )
return true;
else if ( arg == "off" )
return false;
else
{
LogError( context, "Illegal '{0}' arg '{1}'; should be 'on' or 'off'", introducer, arg );
}
}
return false;
}
static bool OptionCount( CompositorScriptContext context, string introducer, int expectedCount, int count )
{
if ( expectedCount < count )
{
LogError( context, "The '{0}' phrase requires {1} arguments", introducer, expectedCount );
return false;
}
else
return true;
}
static void LogIllegal( CompositorScriptContext context, string category, string token )
{
LogError( context, "Illegal {0} attribute '{1}'", category, token );
}
protected void ParseTextureLine(CompositorScriptContext context, string [] args)
{
if (args.Length == 4) {
CompositionTextureDefinition textureDef = context.technique.CreateTextureDefinition(args[0]);
textureDef.Width = (args[1] == "target_width" ? 0 : ParseInt(context, args[1]));
textureDef.Height = (args[2] == "target_height" ? 0 : ParseInt(context, args[2]));
switch (args[3]) {
case "PF_A8R8G8B8":
textureDef.Format = Axiom.Media.PixelFormat.A8R8G8B8;
break;
case "PF_R8G8B8A8":
textureDef.Format = Axiom.Media.PixelFormat.R8G8B8A8;
break;
case "PF_R8G8B8":
textureDef.Format = Axiom.Media.PixelFormat.R8G8B8;
break;
case "PF_FLOAT16_RGBA":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT16_RGBA;
break;
case "PF_FLOAT16_RGB":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT16_RGB;
break;
case "PF_FLOAT32_RGBA":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT32_RGBA;
break;
case "PF_FLOAT16_R":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT16_R;
break;
case "PF_FLOAT32_R":
textureDef.Format = Axiom.Media.PixelFormat.FLOAT32_R;
break;
default:
LogError(context, "Unsupported texture pixel format '{0}'", args[3]);
break;
}
}
}
static StencilOperation ParseStencilOperation( CompositorScriptContext context, string arg )
{
switch ( arg.Trim() )
{
case "keep":
return StencilOperation.Keep;
case "zero":
return StencilOperation.Zero;
case "replace":
return StencilOperation.Replace;
case "increment_wrap":
return StencilOperation.IncrementWrap;
case "increment":
return StencilOperation.Increment;
case "decrement_wrap":
return StencilOperation.DecrementWrap;
case "decrement":
return StencilOperation.Decrement;
case "invert":
return StencilOperation.Invert;
default:
LogError( context, "Illegal stencil_operation '{0}'", arg );
return StencilOperation.Keep;
}
}
static void ParseTextureLine( CompositorScriptContext context, string[] args )
{
int widthPos = 1, heightPos = 2, formatPos = 3;
if ( args.Length == 4 || args.Length == 6 )
{
if ( args.Length == 6 )
{
heightPos += 1;
formatPos += 2;
}
CompositionTechnique.TextureDefinition textureDef = context.technique.CreateTextureDefinition( args[ 0 ] );
if ( args[ widthPos ] == "target_width" )
{
textureDef.Width = 0;
textureDef.WidthFactor = 1.0f;
}
else if ( args[ widthPos ] == "target_width_scaled" )
{
textureDef.Width = 0;
textureDef.WidthFactor = ParseFloat( context, args[ widthPos + 1 ] );
}
else
{
textureDef.Width = ParseInt( context, args[ widthPos ] );
textureDef.WidthFactor = 1.0f;
}
if ( args[ heightPos ] == "target_height" )
{
textureDef.Height = 0;
textureDef.HeightFactor = 1.0f;
}
else if ( args[ heightPos ] == "target_height_scaled" )
{
textureDef.Height = 0;
textureDef.HeightFactor = ParseFloat( context, args[ heightPos + 1 ] );
}
else
{
textureDef.Height = ParseInt( context, args[ heightPos ] );
textureDef.HeightFactor = 1.0f;
}
switch ( args[ formatPos ] )
{
case "PF_A8R8G8B8":
textureDef.PixelFormats.Add( PixelFormat.A8R8G8B8 );
break;
case "PF_R8G8B8A8":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.R8G8B8A8 );
break;
case "PF_R8G8B8":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.R8G8B8 );
break;
case "PF_FLOAT16_RGBA":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.FLOAT16_RGBA );
break;
case "PF_FLOAT16_RGB":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.FLOAT16_RGB );
break;
case "PF_FLOAT32_RGBA":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.FLOAT32_RGBA );
break;
case "PF_FLOAT16_R":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.FLOAT16_R );
break;
case "PF_FLOAT32_R":
textureDef.PixelFormats.Add( Axiom.Media.PixelFormat.FLOAT32_R );
break;
default:
LogError( context, "Unsupported texture pixel format '{0}'", args[ formatPos ] );
break;
}
}
}
private static void ParseTextureLine(CompositorScriptContext context, string[] args)
{
int widthPos = 1, heightPos = 2, formatPos = 3;
if (args.Length == 4 || args.Length == 6)
{
if (args.Length == 6)
{
heightPos += 1;
formatPos += 2;
}
var textureDef = context.technique.CreateTextureDefinition(args[0]);
if (args[widthPos] == "target_width")
{
textureDef.Width = 0;
textureDef.WidthFactor = 1.0f;
}
else if (args[widthPos] == "target_width_scaled")
{
textureDef.Width = 0;
textureDef.WidthFactor = ParseFloat(context, args[widthPos + 1]);
}
else
{
textureDef.Width = ParseInt(context, args[widthPos]);
textureDef.WidthFactor = 1.0f;
}
if (args[heightPos] == "target_height")
{
textureDef.Height = 0;
textureDef.HeightFactor = 1.0f;
}
else if (args[heightPos] == "target_height_scaled")
{
textureDef.Height = 0;
textureDef.HeightFactor = ParseFloat(context, args[heightPos + 1]);
}
else
{
textureDef.Height = ParseInt(context, args[heightPos]);
textureDef.HeightFactor = 1.0f;
}
switch (args[formatPos])
{
case "PF_A8R8G8B8":
textureDef.PixelFormats.Add(PixelFormat.A8R8G8B8);
break;
case "PF_R8G8B8A8":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.R8G8B8A8);
break;
case "PF_R8G8B8":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.R8G8B8);
break;
case "PF_FLOAT16_RGBA":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.FLOAT16_RGBA);
break;
case "PF_FLOAT16_RGB":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.FLOAT16_RGB);
break;
case "PF_FLOAT32_RGBA":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.FLOAT32_RGBA);
break;
case "PF_FLOAT16_R":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.FLOAT16_R);
break;
case "PF_FLOAT32_R":
textureDef.PixelFormats.Add(Axiom.Media.PixelFormat.FLOAT32_R);
break;
default:
LogError(context, "Unsupported texture pixel format '{0}'", args[formatPos]);
break;
}
}
}
static float ParseFloat( CompositorScriptContext context, string s )
{
string n = s.Trim();
try
{
return float.Parse( n );
}
catch ( Exception e )
{
LogError( context, "Error converting string '{0}' to float; error message is '{1}'",
n, e.Message );
return 0.0f;
}
}
public static void ParseScript(CompositorManager compositorManager, Stream data, string groupName, string fileName)
{
var line = "";
var context = new CompositorScriptContext();
context.filename = fileName + (data is FileStream ? " (" + (data as FileStream).Name + ")" : "");
context.lineNo = 0;
var script = new StreamReader(data, System.Text.Encoding.UTF8);
// parse through the data to the end
while ((line = ParseHelper.ReadLine(script)) != null)
{
context.lineNo++;
string[] splitCmd;
string[] args;
string arg;
// ignore blank lines and comments
if (!(line.Length == 0 || line.StartsWith("//")))
{
context.line = line;
splitCmd = SplitByWhitespace(line, 2);
var token = splitCmd[0];
args = SplitArgs(splitCmd.Length == 2 ? splitCmd[1] : "");
arg = (args.Length > 0 ? args[0] : "");
if (context.section == CompositorScriptSection.None)
{
if (token != "compositor")
{
LogError(context, "First token is not 'compositor'!");
break; // Give up
}
var compositorName = RemoveQuotes(splitCmd[1].Trim());
context.compositor = (Compositor)compositorManager.Create(compositorName, groupName);
context.section = CompositorScriptSection.Compositor;
context.seenOpen = false;
continue; // next line
}
else
{
if (!context.seenOpen)
{
if (token == "{")
{
context.seenOpen = true;
}
else
{
LogError(context, "Expected open brace; instead got {0}", token);
}
continue; // next line
}
switch (context.section)
{
case CompositorScriptSection.Compositor:
switch (token)
{
case "technique":
context.section = CompositorScriptSection.Technique;
context.technique = context.compositor.CreateTechnique();
context.seenOpen = false;
continue; // next line
case "}":
context.section = CompositorScriptSection.None;
context.seenOpen = false;
if (context.technique == null)
{
LogError(context, "No 'technique' section in compositor");
continue;
}
break;
default:
LogError(context, "After opening brace '{' of compositor definition, expected 'technique', but got '{0}'",
token);
continue; // next line
}
break;
case CompositorScriptSection.Technique:
switch (token)
{
case "texture":
ParseTextureLine(context, args);
break;
case "target":
context.section = CompositorScriptSection.Target;
context.target = context.technique.CreateTargetPass();
context.target.OutputName = arg.Trim();
context.seenOpen = false;
break;
case "target_output":
context.section = CompositorScriptSection.Target;
context.target = context.technique.OutputTarget;
context.seenOpen = false;
break;
case "compositor_logic":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.technique.CompositorLogicName = args[0].Trim();
break;
case "}":
context.section = CompositorScriptSection.Compositor;
context.seenOpen = true;
break;
default:
LogIllegal(context, "technique", token);
break;
}
break;
case CompositorScriptSection.Target:
switch (token)
{
case "input":
if (OptionCount(context, token, 1, args.Length))
{
arg = args[0];
if (arg == "previous")
{
context.target.InputMode = CompositorInputMode.Previous;
}
else if (arg == "none")
{
context.target.InputMode = CompositorInputMode.None;
}
else
{
LogError(context, "Illegal 'input' arg '{0}'", arg);
}
}
break;
case "only_initial":
context.target.OnlyInitial = OnOffArg(context, token, args);
break;
case "visibility_mask":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.target.VisibilityMask = ParseUint(context, arg);
break;
case "lod_bias":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.target.LodBias = ParseInt(context, arg);
break;
case "material_scheme":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.target.MaterialScheme = arg.Trim();
break;
case "pass":
context.section = CompositorScriptSection.Pass;
context.pass = context.target.CreatePass();
context.seenOpen = false;
if (!OptionCount(context, token, 1, args.Length) && !OptionCount(context, token, 2, args.Length))
{
break;
}
arg = args[0].Trim();
switch (arg)
{
case "render_quad":
context.pass.Type = CompositorPassType.RenderQuad;
break;
case "clear":
context.pass.Type = CompositorPassType.Clear;
break;
case "stencil":
context.pass.Type = CompositorPassType.Stencil;
break;
case "render_scene":
context.pass.Type = CompositorPassType.RenderScene;
break;
case "render_custom":
context.pass.Type = CompositorPassType.RenderCustom;
context.pass.CustomType = args[1].Trim();
break;
default:
LogError(context, "In line '{0}', unrecognized compositor pass type '{1}'", arg);
break;
}
break;
case "}":
context.section = CompositorScriptSection.Technique;
context.seenOpen = true;
break;
default:
LogIllegal(context, "target", token);
break;
}
break;
case CompositorScriptSection.Pass:
switch (token)
{
case "first_render_queue":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.FirstRenderQueue = (RenderQueueGroupID)ParseInt(context, args[0]);
break;
case "last_render_queue":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.LastRenderQueue = (RenderQueueGroupID)ParseInt(context, args[0]);
break;
case "identifier":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.Identifier = ParseUint(context, args[0]);
break;
case "material":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.MaterialName = args[0].Trim();
break;
case "input":
if (!OptionCount(context, token, 3, args.Length))
{
break;
}
var index = 0;
if (args.Length == 3)
{
index = ParseInt(context, args[2]);
}
context.pass.SetInput(ParseInt(context, args[0]), args[1].Trim(), index);
break;
case "clear":
context.section = CompositorScriptSection.Clear;
context.seenOpen = false;
break;
case "stencil":
context.section = CompositorScriptSection.Clear;
context.seenOpen = false;
break;
case "}":
context.section = CompositorScriptSection.Target;
context.seenOpen = true;
break;
default:
LogIllegal(context, "pass", token);
break;
}
break;
case CompositorScriptSection.Clear:
switch (token)
{
case "buffers":
var fb = (FrameBufferType)0;
foreach (var cb in args)
{
switch (cb)
{
case "colour":
fb |= FrameBufferType.Color;
break;
case "color":
fb |= FrameBufferType.Color;
break;
case "depth":
fb |= FrameBufferType.Depth;
break;
case "stencil":
fb |= FrameBufferType.Stencil;
break;
default:
LogError(context, "When parsing pass clear buffers options, illegal option '{0}'", cb);
break;
}
}
break;
case "colour":
context.pass.ClearColor = ParseClearColor(context, args);
break;
case "color":
context.pass.ClearColor = ParseClearColor(context, args);
break;
case "depth_value":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.ClearDepth = ParseFloat(context, args[0]);
break;
case "stencil_value":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.ClearDepth = ParseInt(context, args[0]);
break;
case "}":
context.section = CompositorScriptSection.Pass;
context.seenOpen = true;
break;
default:
LogIllegal(context, "clear", token);
break;
}
break;
case CompositorScriptSection.Stencil:
switch (token)
{
case "check":
context.pass.StencilCheck = OnOffArg(context, token, args);
break;
case "compare_func":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilFunc = ParseCompareFunc(context, arg);
break;
case "ref_value":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilRefValue = ParseInt(context, arg);
break;
case "mask":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilMask = ParseInt(context, arg);
break;
case "fail_op":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilFailOp = ParseStencilOperation(context, arg);
break;
case "depth_fail_op":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilDepthFailOp = ParseStencilOperation(context, arg);
break;
case "pass_op":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilPassOp = ParseStencilOperation(context, arg);
break;
case "two_sided":
if (!OptionCount(context, token, 1, args.Length))
{
break;
}
context.pass.StencilTwoSidedOperation = OnOffArg(context, token, args);
break;
case "}":
context.section = CompositorScriptSection.Pass;
context.seenOpen = true;
break;
default:
LogIllegal(context, "stencil", token);
break;
}
break;
default:
LogError(context, "Internal compositor parser error: illegal context");
break;
}
} // if
} // if
} // while
if (context.section != CompositorScriptSection.None)
{
LogError(context, "At end of file, unterminated compositor script!");
}
}
static ColorEx ParseClearColor( CompositorScriptContext context, string[] args )
{
if ( args.Length != 4 )
{
LogError( context, "A color value must consist of 4 floating point numbers" );
return ColorEx.Black;
}
else
{
float r = ParseFloat( context, args[ 0 ] );
float g = ParseFloat( context, args[ 0 ] );
float b = ParseFloat( context, args[ 0 ] );
float a = ParseFloat( context, args[ 0 ] );
return new ColorEx( a, r, g, b );
}
}
private static int ParseInt( CompositorScriptContext context, string s )
{
var n = s.Trim();
try
{
return int.Parse( n );
}
catch ( Exception e )
{
LogError( context, "Error converting string '{0}' to integer; error message is '{1}'", n, e.Message );
return 0;
}
}
static CompareFunction ParseCompareFunc( CompositorScriptContext context, string arg )
{
switch ( arg.Trim() )
{
case "always_fail":
return CompareFunction.AlwaysFail;
case "always_pass":
return CompareFunction.AlwaysPass;
case "less_equal":
return CompareFunction.LessEqual;
case "less'":
return CompareFunction.Less;
case "equal":
return CompareFunction.Equal;
case "not_equal":
return CompareFunction.NotEqual;
case "greater_equal":
return CompareFunction.GreaterEqual;
case "greater":
return CompareFunction.Greater;
default:
LogError( context, "Illegal stencil compare_func '{0}'", arg );
return CompareFunction.AlwaysPass;
}
}
static void LogError( CompositorScriptContext context, string error, params object[] substitutions )
{
StringBuilder errorBuilder = new StringBuilder();
// log compositor name only if filename not specified
if ( context.filename == null && context.compositor != null )
{
errorBuilder.Append( "Error in compositor " );
errorBuilder.Append( context.compositor.Name );
errorBuilder.Append( " : " );
errorBuilder.AppendFormat( "At line # {0}: '{1}'", context.lineNo, context.line );
errorBuilder.AppendFormat( error, substitutions );
}
else
{
if ( context.compositor != null )
{
errorBuilder.Append( "Error in compositor " );
errorBuilder.Append( context.compositor.Name );
errorBuilder.AppendFormat( " at line # {0}: '{1}'", context.lineNo, context.line );
errorBuilder.AppendFormat( " of {0}: ", context.filename );
errorBuilder.AppendFormat( error, substitutions );
}
else
{
errorBuilder.AppendFormat( "Error at line # {0}: '{1}'", context.lineNo, context.line );
errorBuilder.AppendFormat( " of {0}: ", context.filename );
errorBuilder.AppendFormat( error, substitutions );
}
}
LogManager.Instance.Write( errorBuilder.ToString() );
}
public static void ParseScript( CompositorManager compositorManager, Stream data, string groupName, string fileName )
{
string file = ( (FileStream)data ).Name;
string line = "";
CompositorScriptContext context = new CompositorScriptContext();
context.filename = file;
context.lineNo = 0;
StreamReader script = new StreamReader( data, System.Text.Encoding.UTF8 );
// parse through the data to the end
while ( ( line = ParseHelper.ReadLine( script ) ) != null )
{
context.lineNo++;
string[] splitCmd;
string[] args;
string arg;
// ignore blank lines and comments
if ( !( line.Length == 0 || line.StartsWith( "//" ) ) )
{
context.line = line;
splitCmd = SplitByWhitespace( line, 2 );
string token = splitCmd[ 0 ];
args = SplitArgs( splitCmd.Length == 2 ? splitCmd[ 1 ] : "" );
arg = ( args.Length > 0 ? args[ 0 ] : "" );
if ( context.section == CompositorScriptSection.None )
{
if ( token != "compositor" )
{
LogError( context, "First token is not 'compositor'!" );
break; // Give up
}
string compositorName = RemoveQuotes( splitCmd[ 1 ].Trim() );
context.compositor = (Compositor)compositorManager.Create( compositorName, groupName );
context.section = CompositorScriptSection.Compositor;
context.seenOpen = false;
continue; // next line
}
else
{
if ( !context.seenOpen )
{
if ( token == "{" )
context.seenOpen = true;
else
LogError( context, "Expected open brace; instead got {0}", token );
continue; // next line
}
switch ( context.section )
{
case CompositorScriptSection.Compositor:
switch ( token )
{
case "technique":
context.section = CompositorScriptSection.Technique;
context.technique = context.compositor.CreateTechnique();
context.seenOpen = false;
continue; // next line
case "}":
context.section = CompositorScriptSection.None;
context.seenOpen = false;
if ( context.technique == null )
{
LogError( context, "No 'technique' section in compositor" );
continue;
}
break;
default:
LogError( context,
"After opening brace '{' of compositor definition, expected 'technique', but got '{0}'",
token );
continue; // next line
}
break;
case CompositorScriptSection.Technique:
switch ( token )
{
case "texture":
ParseTextureLine( context, args );
break;
case "target":
context.section = CompositorScriptSection.Target;
context.target = context.technique.CreateTargetPass();
context.target.OutputName = arg.Trim();
context.seenOpen = false;
break;
case "target_output":
context.section = CompositorScriptSection.Target;
context.target = context.technique.OutputTarget;
context.seenOpen = false;
break;
case "compositor_logic":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.technique.CompositorLogicName = args[ 0 ].Trim();
break;
case "}":
context.section = CompositorScriptSection.Compositor;
context.seenOpen = true;
break;
default:
LogIllegal( context, "technique", token );
break;
}
break;
case CompositorScriptSection.Target:
switch ( token )
{
case "input":
if ( OptionCount( context, token, 1, args.Length ) )
{
arg = args[ 0 ];
if ( arg == "previous" )
context.target.InputMode = CompositorInputMode.Previous;
else if ( arg == "none" )
context.target.InputMode = CompositorInputMode.None;
else
LogError( context, "Illegal 'input' arg '{0}'", arg );
}
break;
case "only_initial":
context.target.OnlyInitial = OnOffArg( context, token, args );
break;
case "visibility_mask":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.target.VisibilityMask = ParseUint( context, arg );
break;
case "lod_bias":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.target.LodBias = ParseInt( context, arg );
break;
case "material_scheme":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.target.MaterialScheme = arg.Trim();
break;
case "pass":
context.section = CompositorScriptSection.Pass;
context.pass = context.target.CreatePass();
context.seenOpen = false;
if ( !OptionCount( context, token, 1, args.Length ) && !OptionCount( context, token, 2, args.Length ) )
break;
arg = args[ 0 ].Trim();
switch ( arg )
{
case "render_quad":
context.pass.Type = CompositorPassType.RenderQuad;
break;
case "clear":
context.pass.Type = CompositorPassType.Clear;
break;
case "stencil":
context.pass.Type = CompositorPassType.Stencil;
break;
case "render_scene":
context.pass.Type = CompositorPassType.RenderScene;
break;
case "render_custom":
context.pass.Type = CompositorPassType.RenderCustom;
context.pass.CustomType = args[ 1 ].Trim();
break;
default:
LogError( context, "In line '{0}', unrecognized compositor pass type '{1}'", arg );
break;
}
break;
case "}":
context.section = CompositorScriptSection.Technique;
context.seenOpen = true;
break;
default:
LogIllegal( context, "target", token );
break;
}
break;
case CompositorScriptSection.Pass:
switch ( token )
{
case "first_render_queue":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.FirstRenderQueue = (RenderQueueGroupID)ParseInt( context, args[ 0 ] );
break;
case "last_render_queue":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.LastRenderQueue = (RenderQueueGroupID)ParseInt( context, args[ 0 ] );
break;
case "identifier":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.Identifier = ParseUint( context, args[ 0 ] );
break;
case "material":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.MaterialName = args[ 0 ].Trim();
break;
case "input":
if ( !OptionCount( context, token, 3, args.Length ) )
break;
int index = 0;
if ( args.Length == 3 )
index = ParseInt( context, args[ 2 ] );
context.pass.SetInput( ParseInt( context, args[ 0 ] ), args[ 1 ].Trim(), index );
break;
case "clear":
context.section = CompositorScriptSection.Clear;
context.seenOpen = false;
break;
case "stencil":
context.section = CompositorScriptSection.Clear;
context.seenOpen = false;
break;
case "}":
context.section = CompositorScriptSection.Target;
context.seenOpen = true;
break;
default:
LogIllegal( context, "pass", token );
break;
}
break;
case CompositorScriptSection.Clear:
switch ( token )
{
case "buffers":
FrameBufferType fb = (FrameBufferType)0;
foreach ( string cb in args )
{
switch ( cb )
{
case "colour":
fb |= FrameBufferType.Color;
break;
case "color":
fb |= FrameBufferType.Color;
break;
case "depth":
fb |= FrameBufferType.Depth;
break;
case "stencil":
fb |= FrameBufferType.Stencil;
break;
default:
LogError( context, "When parsing pass clear buffers options, illegal option '{0}'", cb );
break;
}
}
break;
case "colour":
context.pass.ClearColor = ParseClearColor( context, args );
break;
case "color":
context.pass.ClearColor = ParseClearColor( context, args );
break;
case "depth_value":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.ClearDepth = ParseFloat( context, args[ 0 ] );
break;
case "stencil_value":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.ClearDepth = ParseInt( context, args[ 0 ] );
break;
case "}":
context.section = CompositorScriptSection.Pass;
context.seenOpen = true;
break;
default:
LogIllegal( context, "clear", token );
break;
}
break;
case CompositorScriptSection.Stencil:
switch ( token )
{
case "check":
context.pass.StencilCheck = OnOffArg( context, token, args );
break;
case "compare_func":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilFunc = ParseCompareFunc( context, arg );
break;
case "ref_value":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilRefValue = ParseInt( context, arg );
break;
case "mask":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilMask = ParseInt( context, arg );
break;
case "fail_op":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilFailOp = ParseStencilOperation( context, arg );
break;
case "depth_fail_op":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilDepthFailOp = ParseStencilOperation( context, arg );
break;
case "pass_op":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilPassOp = ParseStencilOperation( context, arg );
break;
case "two_sided":
if ( !OptionCount( context, token, 1, args.Length ) )
break;
context.pass.StencilTwoSidedOperation = OnOffArg( context, token, args );
break;
case "}":
context.section = CompositorScriptSection.Pass;
context.seenOpen = true;
break;
default:
LogIllegal( context, "stencil", token );
break;
}
break;
default:
LogError( context, "Internal compositor parser error: illegal context" );
break;
}
} // if
} // if
} // while
if ( context.section != CompositorScriptSection.None )
LogError( context, "At end of file, unterminated compositor script!" );
}
private static void LogIllegal(CompositorScriptContext context, string category, string token)
{
LogError(context, "Illegal {0} attribute '{1}'", category, token);
}
