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Ogre::GpuProgramParameters Class Reference

Collects together the program parameters used for a GpuProgram. More...

#include <OgreGpuProgram.h>

List of all members.

Public Types

typedef ConstVectorIterator<
RealConstantList
RealConstantIterator
typedef ConstVectorIterator<
IntConstantList
IntConstantIterator
typedef ConstVectorIterator<
AutoConstantList
AutoConstantIterator
enum  AutoConstantType {
  ACT_WORLD_MATRIX, ACT_WORLD_MATRIX_ARRAY_3x4, ACT_WORLD_MATRIX_ARRAY, ACT_VIEW_MATRIX,
  ACT_PROJECTION_MATRIX, ACT_VIEWPROJ_MATRIX, ACT_WORLDVIEW_MATRIX, ACT_WORLDVIEWPROJ_MATRIX,
  ACT_INVERSE_WORLD_MATRIX, ACT_INVERSE_VIEW_MATRIX, ACT_INVERSE_WORLDVIEW_MATRIX, ACT_INVERSETRANSPOSE_WORLD_MATRIX,
  ACT_INVERSETRANSPOSE_WORLDVIEW_MATRIX, ACT_LIGHT_DIFFUSE_COLOUR, ACT_LIGHT_SPECULAR_COLOUR, ACT_LIGHT_ATTENUATION,
  ACT_LIGHT_POSITION, ACT_LIGHT_DIRECTION, ACT_LIGHT_POSITION_OBJECT_SPACE, ACT_LIGHT_DIRECTION_OBJECT_SPACE,
  ACT_LIGHT_DISTANCE_OBJECT_SPACE, ACT_SHADOW_EXTRUSION_DISTANCE, ACT_CAMERA_POSITION_OBJECT_SPACE, ACT_AMBIENT_LIGHT_COLOUR,
  ACT_TEXTURE_VIEWPROJ_MATRIX, ACT_CUSTOM
}
 Defines the types of automatically updated values that may be bound to GpuProgram parameters, or used to modify parameters on a per-object basis. More...


Public Member Functions

 GpuProgramParameters ()
 ~GpuProgramParameters ()
void setConstant (size_t index, const Vector4 &vec)
 Sets a 4-element floating-point parameter to the program.

void setConstant (size_t index, const Vector3 &vec)
 Sets a 4-element floating-point parameter to the program via Vector3.

void setConstant (size_t index, const Matrix4 &m)
 Sets a Matrix4 parameter to the program.

void setConstant (size_t index, const Matrix4 *m, size_t numEntries)
 Sets a list of Matrix4 parameters to the program.

void setConstant (size_t index, const float *val, size_t count)
 Sets a multiple value constant floating-point parameter to the program.

void setConstant (size_t index, const double *val, size_t count)
 Sets a multiple value constant floating-point parameter to the program.

void setConstant (size_t index, const ColourValue &colour)
 Sets a ColourValue parameter to the program.

void setConstant (size_t index, const int *val, size_t count)
 Sets a multiple value constant integer parameter to the program.

void resetRealConstants (void)
 Deletes the contents of the Real constants registers.

void resetIntConstants (void)
 Deletes the contents of the int constants registers.

RealConstantIterator getRealConstantIterator (void) const
 Gets an iterator over the Real constant parameters.

IntConstantIterator getIntConstantIterator (void) const
 Gets an iterator over the integer constant parameters.

RealConstantEntrygetRealConstantEntry (const size_t index)
 Gets a specific Real Constant entry if index is in valid range otherwise returns a NULL.

IntConstantEntrygetIntConstantEntry (const size_t index)
 Gets a specific Int Constant entry if index is in valid range otherwise returns a NULL.

RealConstantEntrygetNamedRealConstantEntry (const String &name)
 Gets a Named Real Constant entry if the name is found otherwise returns a NULL.

IntConstantEntrygetNamedIntConstantEntry (const String &name)
 Gets a named Int Constant entry if name is found otherwise returns a NULL.

size_t getRealConstantCount (void) const
 Gets the number of Real constants that have been set.

size_t getIntConstantCount (void) const
 Gets the number of int constants that have been set.

bool hasRealConstantParams (void) const
 Returns true if there are any Real constants contained here.

bool hasIntConstantParams (void) const
 Returns true if there are any int constants contained here.

void setAutoConstant (size_t index, AutoConstantType acType, size_t extraInfo=0)
 Sets up a constant which will automatically be updated by the system.

void setConstantFromTime (size_t index, Real factor)
 Sets a named parameter up to track a derivation of the current time.

void clearAutoConstants (void)
 Clears all the existing automatic constants.

AutoConstantIterator getAutoConstantIterator (void) const
 Gets an iterator over the automatic constant bindings currently in place.

bool hasAutoConstants (void) const
 Returns true if this instance has any automatic constants.

void _updateAutoParamsNoLights (const AutoParamDataSource &source)
 Updates the automatic parameters (except lights) based on the details provided.

void _updateAutoParamsLightsOnly (const AutoParamDataSource &source)
 Updates the automatic parameters for lights based on the details provided.

void setAutoAddParamName (bool state)
 Sets the auto add parameter name flag.

void setNamedConstant (const String &name, Real val)
 Sets a single value constant floating-point parameter to the program.

void setNamedConstant (const String &name, int val)
 Sets a single value constant integer parameter to the program.

void setNamedConstant (const String &name, const Vector4 &vec)
 Sets a Vector4 parameter to the program.

void setNamedConstant (const String &name, const Vector3 &vec)
 Sets a Vector3 parameter to the program.

void setNamedConstant (const String &name, const Matrix4 &m)
 Sets a Matrix4 parameter to the program.

void setNamedConstant (const String &name, const Matrix4 *m, size_t numEntries)
 Sets a list of Matrix4 parameters to the program.

void setNamedConstant (const String &name, const float *val, size_t count)
 Sets a multiple value constant floating-point parameter to the program.

void setNamedConstant (const String &name, const double *val, size_t count)
 Sets a multiple value constant floating-point parameter to the program.

void setNamedConstant (const String &name, const ColourValue &colour)
 Sets a ColourValue parameter to the program.

void setNamedConstant (const String &name, const int *val, size_t count)
 Sets a multiple value constant integer parameter to the program.

void setNamedAutoConstant (const String &name, AutoConstantType acType, size_t extraInfo=0)
 Sets up a constant which will automatically be updated by the system.

void setNamedConstantFromTime (const String &name, Real factor)
 Sets a named parameter up to track a derivation of the current time.

void _mapParameterNameToIndex (const String &name, size_t index)
 Internal method for associating a parameter name with an index.

size_t getParamIndex (const String &name)
 Gets the constant index associated with a named parameter.

void setTransposeMatrices (bool val)
 Sets whether or not we need to transpose the matrices passed in from the rest of OGRE.

bool getTransposeMatrices (void) const
 Gets whether or not matrices are to be transposed when set.

void copyConstantsFrom (const GpuProgramParameters &source)
 Copies the values of all constants (including auto constants) from another GpuProgramParameters object.


Protected Types

typedef std::vector< RealConstantEntryRealConstantList
typedef std::vector< IntConstantEntryIntConstantList
typedef std::vector< AutoConstantEntryAutoConstantList
typedef std::map< String,
size_t > 
ParamNameMap
 Mapping from parameter names to indexes - high-level programs are expected to populate this.


Protected Attributes

RealConstantList mRealConstants
 Packed list of floating-point constants.

IntConstantList mIntConstants
 Packed list of integer constants.

AutoConstantList mAutoConstants
 List of automatically updated parameters.

ParamNameMap mParamNameMap
bool mTransposeMatrices
 Do we need to transpose matrices?

bool mAutoAddParamName
 flag to indicate if names not found will be automatically added


Detailed Description

Collects together the program parameters used for a GpuProgram.

Remarks:
Gpu program state includes constant parameters used by the program, and bindings to render system state which is propagated into the constants by the engine automatically if requested.
GpuProgramParameters objects should be created through the GpuProgramManager and may be shared between multiple GpuProgram instances. For this reason they are managed using a shared pointer, which will ensure they are automatically deleted when no program is using them anymore.

Definition at line 55 of file OgreGpuProgram.h.


Member Typedef Documentation

typedef ConstVectorIterator<AutoConstantList> Ogre::GpuProgramParameters::AutoConstantIterator
 

Definition at line 308 of file OgreGpuProgram.h.

typedef std::vector<AutoConstantEntry> Ogre::GpuProgramParameters::AutoConstantList [protected]
 

Definition at line 161 of file OgreGpuProgram.h.

typedef ConstVectorIterator<IntConstantList> Ogre::GpuProgramParameters::IntConstantIterator
 

Definition at line 252 of file OgreGpuProgram.h.

typedef std::vector<IntConstantEntry> Ogre::GpuProgramParameters::IntConstantList [protected]
 

Definition at line 159 of file OgreGpuProgram.h.

typedef std::map<String, size_t> Ogre::GpuProgramParameters::ParamNameMap [protected]
 

Mapping from parameter names to indexes - high-level programs are expected to populate this.

Definition at line 169 of file OgreGpuProgram.h.

typedef ConstVectorIterator<RealConstantList> Ogre::GpuProgramParameters::RealConstantIterator
 

Definition at line 251 of file OgreGpuProgram.h.

typedef std::vector<RealConstantEntry> Ogre::GpuProgramParameters::RealConstantList [protected]
 

Definition at line 158 of file OgreGpuProgram.h.


Member Enumeration Documentation

enum Ogre::GpuProgramParameters::AutoConstantType
 

Defines the types of automatically updated values that may be bound to GpuProgram parameters, or used to modify parameters on a per-object basis.

Enumeration values:
ACT_WORLD_MATRIX  The current world matrix.
ACT_WORLD_MATRIX_ARRAY_3x4  The current array of world matrices, as a 3x4 matrix, used for blending.
ACT_WORLD_MATRIX_ARRAY  The current array of world matrices, used for blending.
ACT_VIEW_MATRIX  The current view matrix.
ACT_PROJECTION_MATRIX  The current projection matrix.
ACT_VIEWPROJ_MATRIX  The current view & projection matrices concatenated.
ACT_WORLDVIEW_MATRIX  The current world & view matrices concatenated.
ACT_WORLDVIEWPROJ_MATRIX  The current world, view & projection matrices concatenated.
ACT_INVERSE_WORLD_MATRIX  The current world matrix, inverted.
ACT_INVERSE_VIEW_MATRIX  The current view matrix, inverted.
ACT_INVERSE_WORLDVIEW_MATRIX  The current world & view matrices concatenated, then inverted.
ACT_INVERSETRANSPOSE_WORLD_MATRIX  The current world matrix, inverted & transposed.
ACT_INVERSETRANSPOSE_WORLDVIEW_MATRIX  The current world & view matrices concatenated, then inverted & tranposed.
ACT_LIGHT_DIFFUSE_COLOUR  Light diffuse colour (index determined by setAutoConstant call).
ACT_LIGHT_SPECULAR_COLOUR  Light diffuse colour (index determined by setAutoConstant call).
ACT_LIGHT_ATTENUATION  Light attenuation parameters, Vector4(range, constant, linear, quadric).
ACT_LIGHT_POSITION  A light position in world space (index determined by setAutoConstant call).
ACT_LIGHT_DIRECTION  A light direction in world space (index determined by setAutoConstant call).
ACT_LIGHT_POSITION_OBJECT_SPACE  A light position in object space (index determined by setAutoConstant call).
ACT_LIGHT_DIRECTION_OBJECT_SPACE  A light direction in object space (index determined by setAutoConstant call).
ACT_LIGHT_DISTANCE_OBJECT_SPACE  The distance of the light from the center of the object a useful approximation as an alternative to per-vertex distance calculations.

ACT_SHADOW_EXTRUSION_DISTANCE  The distance a shadow volume should be extruded when using finite extrusion programs.

ACT_CAMERA_POSITION_OBJECT_SPACE  The current camera's position in object space.
ACT_AMBIENT_LIGHT_COLOUR  The ambient light colour set in the scene.
ACT_TEXTURE_VIEWPROJ_MATRIX  The view/projection matrix of the assigned texture projection frustum.
ACT_CUSTOM  A custom parameter which will come from the renderable, using 'data' as the identifier.

Definition at line 61 of file OgreGpuProgram.h.


Constructor & Destructor Documentation

Ogre::GpuProgramParameters::GpuProgramParameters  ) 
 

Ogre::GpuProgramParameters::~GpuProgramParameters  ) 
 

Definition at line 178 of file OgreGpuProgram.h.


Member Function Documentation

void Ogre::GpuProgramParameters::_mapParameterNameToIndex const String name,
size_t  index
 

Internal method for associating a parameter name with an index.

void Ogre::GpuProgramParameters::_updateAutoParamsLightsOnly const AutoParamDataSource source  ) 
 

Updates the automatic parameters for lights based on the details provided.

void Ogre::GpuProgramParameters::_updateAutoParamsNoLights const AutoParamDataSource source  ) 
 

Updates the automatic parameters (except lights) based on the details provided.

void Ogre::GpuProgramParameters::clearAutoConstants void   ) 
 

Clears all the existing automatic constants.

void Ogre::GpuProgramParameters::copyConstantsFrom const GpuProgramParameters source  ) 
 

Copies the values of all constants (including auto constants) from another GpuProgramParameters object.

AutoConstantIterator Ogre::GpuProgramParameters::getAutoConstantIterator void   )  const
 

Gets an iterator over the automatic constant bindings currently in place.

size_t Ogre::GpuProgramParameters::getIntConstantCount void   )  const
 

Gets the number of int constants that have been set.

Definition at line 280 of file OgreGpuProgram.h.

IntConstantEntry* Ogre::GpuProgramParameters::getIntConstantEntry const size_t  index  ) 
 

Gets a specific Int Constant entry if index is in valid range otherwise returns a NULL.

index which entry is to be retrieved

IntConstantIterator Ogre::GpuProgramParameters::getIntConstantIterator void   )  const
 

Gets an iterator over the integer constant parameters.

IntConstantEntry* Ogre::GpuProgramParameters::getNamedIntConstantEntry const String name  ) 
 

Gets a named Int Constant entry if name is found otherwise returns a NULL.

name The name of the entry to be retrieved

RealConstantEntry* Ogre::GpuProgramParameters::getNamedRealConstantEntry const String name  ) 
 

Gets a Named Real Constant entry if the name is found otherwise returns a NULL.

name The name of the entry to be retrieved

size_t Ogre::GpuProgramParameters::getParamIndex const String name  ) 
 

Gets the constant index associated with a named parameter.

size_t Ogre::GpuProgramParameters::getRealConstantCount void   )  const
 

Gets the number of Real constants that have been set.

Definition at line 278 of file OgreGpuProgram.h.

RealConstantEntry* Ogre::GpuProgramParameters::getRealConstantEntry const size_t  index  ) 
 

Gets a specific Real Constant entry if index is in valid range otherwise returns a NULL.

index which entry is to be retrieved

RealConstantIterator Ogre::GpuProgramParameters::getRealConstantIterator void   )  const
 

Gets an iterator over the Real constant parameters.

bool Ogre::GpuProgramParameters::getTransposeMatrices void   )  const
 

Gets whether or not matrices are to be transposed when set.

Definition at line 512 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasAutoConstants void   )  const
 

Returns true if this instance has any automatic constants.

Definition at line 312 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasIntConstantParams void   )  const
 

Returns true if there are any int constants contained here.

Definition at line 284 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasRealConstantParams void   )  const
 

Returns true if there are any Real constants contained here.

Definition at line 282 of file OgreGpuProgram.h.

void Ogre::GpuProgramParameters::resetIntConstants void   ) 
 

Deletes the contents of the int constants registers.

Definition at line 249 of file OgreGpuProgram.h.

void Ogre::GpuProgramParameters::resetRealConstants void   ) 
 

Deletes the contents of the Real constants registers.

Definition at line 247 of file OgreGpuProgram.h.

void Ogre::GpuProgramParameters::setAutoAddParamName bool  state  ) 
 

Sets the auto add parameter name flag.

Remarks:
Not all GPU programs make named parameters available after the high level source is compiled. GLSL is one such case. If parameter names are not loaded prior to the material serializer reading in parameter names in a script then an exception is generated. Set AutoAddParamName to true to have names not found in the map added to the map.
Note:
The index of the parameter name will be set to the end of the Real Constant List.
Parameters:
state true to enable automatic name

Definition at line 329 of file OgreGpuProgram.h.

void Ogre::GpuProgramParameters::setAutoConstant size_t  index,
AutoConstantType  acType,
size_t  extraInfo = 0
 

Sets up a constant which will automatically be updated by the system.

Remarks:
Vertex and fragment programs often need parameters which are to do with the current render state, or particular values which may very well change over time, and often between objects which are being rendered. This feature allows you to set up a certain number of predefined parameter mappings that are kept up to date for you.
Parameters:
index The location in the constant list to place this updated constant every time it is changed. Note that because of the nature of the types, we know how big the parameter details will be so you don't need to set that like you do for manual constants.
acType The type of automatic constant to set
extraInfo If the constant type needs more information (like a light index) put it here.

void Ogre::GpuProgramParameters::setConstant size_t  index,
const int *  val,
size_t  count
 

Sets a multiple value constant integer parameter to the program.

Remarks:
Different types of GPU programs support different types of constant parameters. For example, it's relatively common to find that vertex programs only support floating point constants, and that fragment programs only support integer (fixed point) parameters. This can vary depending on the program version supported by the graphics card being used. You should consult the documentation for the type of low level program you are using, or alternatively use the methods provided on RenderSystemCapabilities to determine the options.
Parameters:
index The constant index at which to place the parameter (each constant is a 4D integer)
val Pointer to the values to write, must contain 4*count ints
count The number of groups of 4 ints to write

void Ogre::GpuProgramParameters::setConstant size_t  index,
const ColourValue colour
 

Sets a ColourValue parameter to the program.

Parameters:
index The constant index at which to place the parameter (each constant is a 4D float)
colour The value to set

void Ogre::GpuProgramParameters::setConstant size_t  index,
const double *  val,
size_t  count
 

Sets a multiple value constant floating-point parameter to the program.

Parameters:
index The constant index at which to start placing parameters (each constant is a 4D float)
val Pointer to the values to write, must contain 4*count floats
count The number of groups of 4 floats to write

void Ogre::GpuProgramParameters::setConstant size_t  index,
const float *  val,
size_t  count
 

Sets a multiple value constant floating-point parameter to the program.

Parameters:
index The constant index at which to start placing parameters (each constant is a 4D float)
val Pointer to the values to write, must contain 4*count floats
count The number of groups of 4 floats to write

void Ogre::GpuProgramParameters::setConstant size_t  index,
const Matrix4 m,
size_t  numEntries
 

Sets a list of Matrix4 parameters to the program.

Parameters:
index The constant index at which to start placing the parameter (each constant is a 4D float). NB since a Matrix4 is 16 floats long, so each entry will take up 4 indexes.
m Pointer to an array of matrices to set
numEntries Number of Matrix4 entries

void Ogre::GpuProgramParameters::setConstant size_t  index,
const Matrix4 m
 

Sets a Matrix4 parameter to the program.

Parameters:
index The constant index at which to place the parameter (each constant is a 4D float). NB since a Matrix4 is 16 floats long, this parameter will take up 4 indexes.
m The value to set

void Ogre::GpuProgramParameters::setConstant size_t  index,
const Vector3 vec
 

Sets a 4-element floating-point parameter to the program via Vector3.

Parameters:
index The constant index at which to place the parameter (each constant is a 4D float). Note that since you're passing a Vector3, the last element of the 4-element value will be set to 1 (a homogenous vector)
vec The value to set

void Ogre::GpuProgramParameters::setConstant size_t  index,
const Vector4 vec
 

Sets a 4-element floating-point parameter to the program.

Parameters:
index The constant index at which to place the parameter (each constant is a 4D float)
vec The value to set

void Ogre::GpuProgramParameters::setConstantFromTime size_t  index,
Real  factor
 

Sets a named parameter up to track a derivation of the current time.

Parameters:
index The index of the parameter
factor The amount by which to scale the time value

void Ogre::GpuProgramParameters::setNamedAutoConstant const String name,
AutoConstantType  acType,
size_t  extraInfo = 0
 

Sets up a constant which will automatically be updated by the system.

Remarks:
Vertex and fragment programs often need parameters which are to do with the current render state, or particular values which may very well change over time, and often between objects which are being rendered. This feature allows you to set up a certain number of predefined parameter mappings that are kept up to date for you.
Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
acType The type of automatic constant to set
extraInfo If the constant type needs more information (like a light index) put it here.

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const int *  val,
size_t  count
 

Sets a multiple value constant integer parameter to the program.

Remarks:
Different types of GPU programs support different types of constant parameters. For example, it's relatively common to find that vertex programs only support floating point constants, and that fragment programs only support integer (fixed point) parameters. This can vary depending on the program version supported by the graphics card being used. You should consult the documentation for the type of low level program you are using, or alternatively use the methods provided on RenderSystemCapabilities to determine the options.
Another possible limitation is that some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. Again, see RenderSystemCapabilities for full details.
Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
val Pointer to the values to write
count The number of integers to write

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const ColourValue colour
 

Sets a ColourValue parameter to the program.

Parameters:
name The name of the parameter
colour The value to set

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const double *  val,
size_t  count
 

Sets a multiple value constant floating-point parameter to the program.

Remarks:
Different types of GPU programs support different types of constant parameters. For example, it's relatively common to find that vertex programs only support floating point constants, and that fragment programs only support integer (fixed point) parameters. This can vary depending on the program version supported by the graphics card being used. You should consult the documentation for the type of low level program you are using, or alternatively use the methods provided on RenderSystemCapabilities to determine the options.
Another possible limitation is that some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. Again, see RenderSystemCapabilities for full details.
Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
val Pointer to the values to write
count The number of floats to write

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const float *  val,
size_t  count
 

Sets a multiple value constant floating-point parameter to the program.

Remarks:
Different types of GPU programs support different types of constant parameters. For example, it's relatively common to find that vertex programs only support floating point constants, and that fragment programs only support integer (fixed point) parameters. This can vary depending on the program version supported by the graphics card being used. You should consult the documentation for the type of low level program you are using, or alternatively use the methods provided on RenderSystemCapabilities to determine the options.
Another possible limitation is that some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. Again, see RenderSystemCapabilities for full details.
Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
val Pointer to the values to write
count The number of floats to write

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const Matrix4 m,
size_t  numEntries
 

Sets a list of Matrix4 parameters to the program.

Parameters:
name The name of the parameter; this must be the first index of an array, for examples 'matrices[0]' NB since a Matrix4 is 16 floats long, so each entry will take up 4 indexes.
m Pointer to an array of matrices to set
numEntries Number of Matrix4 entries

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const Matrix4 m
 

Sets a Matrix4 parameter to the program.

Parameters:
name The name of the parameter
m The value to set

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const Vector3 vec
 

Sets a Vector3 parameter to the program.

Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
index The index at which to place the parameter NB this index refers to the number of floats, so a Vector3 is 3. Note that many rendersystems & programs assume that every floating point parameter is passed in as a vector of 4 items, so you are strongly advised to check with RenderSystemCapabilities before using this version - if in doubt use Vector4 or ColourValue instead (both are 4D).
vec The value to set

void Ogre::GpuProgramParameters::setNamedConstant const String name,
const Vector4 vec
 

Sets a Vector4 parameter to the program.

Parameters:
name The name of the parameter
vec The value to set

void Ogre::GpuProgramParameters::setNamedConstant const String name,
int  val
 

Sets a single value constant integer parameter to the program.

Remarks:
Different types of GPU programs support different types of constant parameters. For example, it's relatively common to find that vertex programs only support floating point constants, and that fragment programs only support integer (fixed point) parameters. This can vary depending on the program version supported by the graphics card being used. You should consult the documentation for the type of low level program you are using, or alternatively use the methods provided on RenderSystemCapabilities to determine the options.
Another possible limitation is that some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. Again, see RenderSystemCapabilities for full details.
Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
val The value to set

void Ogre::GpuProgramParameters::setNamedConstant const String name,
Real  val
 

Sets a single value constant floating-point parameter to the program.

Remarks:
Different types of GPU programs support different types of constant parameters. For example, it's relatively common to find that vertex programs only support floating point constants, and that fragment programs only support integer (fixed point) parameters. This can vary depending on the program version supported by the graphics card being used. You should consult the documentation for the type of low level program you are using, or alternatively use the methods provided on RenderSystemCapabilities to determine the options.
Another possible limitation is that some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. Again, see RenderSystemCapabilities for full details.
Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
val The value to set

void Ogre::GpuProgramParameters::setNamedConstantFromTime const String name,
Real  factor
 

Sets a named parameter up to track a derivation of the current time.

Note:
This named option will only work if you are using a parameters object created from a high-level program (HighLevelGpuProgram).
Parameters:
name The name of the parameter
factor The amount by which to scale the time value

void Ogre::GpuProgramParameters::setTransposeMatrices bool  val  ) 
 

Sets whether or not we need to transpose the matrices passed in from the rest of OGRE.

Remarks:
D3D uses transposed matrices compared to GL and OGRE; this is not important when you use programs which are written to process row-major matrices, such as those generated by Cg, but if you use a program written to D3D's matrix layout you will need to enable this flag.

Definition at line 510 of file OgreGpuProgram.h.


Member Data Documentation

bool Ogre::GpuProgramParameters::mAutoAddParamName [protected]
 

flag to indicate if names not found will be automatically added

Definition at line 174 of file OgreGpuProgram.h.

AutoConstantList Ogre::GpuProgramParameters::mAutoConstants [protected]
 

List of automatically updated parameters.

Definition at line 167 of file OgreGpuProgram.h.

IntConstantList Ogre::GpuProgramParameters::mIntConstants [protected]
 

Packed list of integer constants.

Definition at line 165 of file OgreGpuProgram.h.

ParamNameMap Ogre::GpuProgramParameters::mParamNameMap [protected]
 

Definition at line 170 of file OgreGpuProgram.h.

RealConstantList Ogre::GpuProgramParameters::mRealConstants [protected]
 

Packed list of floating-point constants.

Definition at line 163 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::mTransposeMatrices [protected]
 

Do we need to transpose matrices?

Definition at line 172 of file OgreGpuProgram.h.


The documentation for this class was generated from the following file:

Copyright © 2000-2005 by The OGRE Team
Last modified Wed Feb 23 00:20:09 2005