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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 std::vector< AutoConstantEntry > | AutoConstantList
typedef std::vector< float > | FloatConstantList
| Definition of container that holds the current float constants.
typedef std::vector< int > | IntConstantList
| Definition of container that holds the current float constants.
typedef ConstVectorIterator< AutoConstantList > | AutoConstantIterator
enum | AutoConstantType { ACT_WORLD_MATRIX, ACT_INVERSE_WORLD_MATRIX, ACT_TRANSPOSE_WORLD_MATRIX, ACT_INVERSE_TRANSPOSE_WORLD_MATRIX, ACT_WORLD_MATRIX_ARRAY_3x4, ACT_WORLD_MATRIX_ARRAY, ACT_VIEW_MATRIX, ACT_INVERSE_VIEW_MATRIX, ACT_TRANSPOSE_VIEW_MATRIX, ACT_INVERSE_TRANSPOSE_VIEW_MATRIX, ACT_PROJECTION_MATRIX, ACT_INVERSE_PROJECTION_MATRIX, ACT_TRANSPOSE_PROJECTION_MATRIX, ACT_INVERSE_TRANSPOSE_PROJECTION_MATRIX, ACT_VIEWPROJ_MATRIX, ACT_INVERSE_VIEWPROJ_MATRIX, ACT_TRANSPOSE_VIEWPROJ_MATRIX, ACT_INVERSE_TRANSPOSE_VIEWPROJ_MATRIX, ACT_WORLDVIEW_MATRIX, ACT_INVERSE_WORLDVIEW_MATRIX, ACT_TRANSPOSE_WORLDVIEW_MATRIX, ACT_INVERSE_TRANSPOSE_WORLDVIEW_MATRIX, ACT_WORLDVIEWPROJ_MATRIX, ACT_INVERSE_WORLDVIEWPROJ_MATRIX, ACT_TRANSPOSE_WORLDVIEWPROJ_MATRIX, ACT_INVERSE_TRANSPOSE_WORLDVIEWPROJ_MATRIX, ACT_RENDER_TARGET_FLIPPING, ACT_FOG_COLOUR, ACT_FOG_PARAMS, ACT_SURFACE_AMBIENT_COLOUR, ACT_SURFACE_DIFFUSE_COLOUR, ACT_SURFACE_SPECULAR_COLOUR, ACT_SURFACE_EMISSIVE_COLOUR, ACT_SURFACE_SHININESS, ACT_AMBIENT_LIGHT_COLOUR, ACT_LIGHT_DIFFUSE_COLOUR, ACT_LIGHT_SPECULAR_COLOUR, ACT_LIGHT_ATTENUATION, ACT_SPOTLIGHT_PARAMS, ACT_LIGHT_POSITION, ACT_LIGHT_POSITION_OBJECT_SPACE, ACT_LIGHT_POSITION_VIEW_SPACE, ACT_LIGHT_DIRECTION, ACT_LIGHT_DIRECTION_OBJECT_SPACE, ACT_LIGHT_DIRECTION_VIEW_SPACE, ACT_LIGHT_DISTANCE_OBJECT_SPACE, ACT_LIGHT_POWER_SCALE, ACT_LIGHT_DIFFUSE_COLOUR_ARRAY, ACT_LIGHT_SPECULAR_COLOUR_ARRAY, ACT_LIGHT_ATTENUATION_ARRAY, ACT_LIGHT_POSITION_ARRAY, ACT_LIGHT_POSITION_OBJECT_SPACE_ARRAY, ACT_LIGHT_POSITION_VIEW_SPACE_ARRAY, ACT_LIGHT_DIRECTION_ARRAY, ACT_LIGHT_DIRECTION_OBJECT_SPACE_ARRAY, ACT_LIGHT_DIRECTION_VIEW_SPACE_ARRAY, ACT_LIGHT_DISTANCE_OBJECT_SPACE_ARRAY, ACT_LIGHT_POWER_SCALE_ARRAY, ACT_SPOTLIGHT_PARAMS_ARRAY, ACT_DERIVED_AMBIENT_LIGHT_COLOUR, ACT_DERIVED_SCENE_COLOUR, ACT_DERIVED_LIGHT_DIFFUSE_COLOUR, ACT_DERIVED_LIGHT_SPECULAR_COLOUR, ACT_DERIVED_LIGHT_DIFFUSE_COLOUR_ARRAY, ACT_DERIVED_LIGHT_SPECULAR_COLOUR_ARRAY, ACT_SHADOW_EXTRUSION_DISTANCE, ACT_CAMERA_POSITION, ACT_CAMERA_POSITION_OBJECT_SPACE, ACT_TEXTURE_VIEWPROJ_MATRIX, ACT_CUSTOM, ACT_TIME, ACT_TIME_0_X, ACT_COSTIME_0_X, ACT_SINTIME_0_X, ACT_TANTIME_0_X, ACT_TIME_0_X_PACKED, ACT_TIME_0_1, ACT_COSTIME_0_1, ACT_SINTIME_0_1, ACT_TANTIME_0_1, ACT_TIME_0_1_PACKED, ACT_TIME_0_2PI, ACT_COSTIME_0_2PI, ACT_SINTIME_0_2PI, ACT_TANTIME_0_2PI, ACT_TIME_0_2PI_PACKED, ACT_FRAME_TIME, ACT_FPS, ACT_VIEWPORT_WIDTH, ACT_VIEWPORT_HEIGHT, ACT_INVERSE_VIEWPORT_WIDTH, ACT_INVERSE_VIEWPORT_HEIGHT, ACT_VIEWPORT_SIZE, ACT_VIEW_DIRECTION, ACT_VIEW_SIDE_VECTOR, ACT_VIEW_UP_VECTOR, ACT_FOV, ACT_NEAR_CLIP_DISTANCE, ACT_FAR_CLIP_DISTANCE, ACT_PASS_NUMBER, ACT_PASS_ITERATION_NUMBER, ACT_ANIMATION_PARAMETRIC, ACT_TEXEL_OFFSETS, ACT_SCENE_DEPTH_RANGE, ACT_SHADOW_SCENE_DEPTH_RANGE, ACT_TEXTURE_SIZE, ACT_INVERSE_TEXTURE_SIZE, ACT_PACKED_TEXTURE_SIZE }
| 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...
enum | ACDataType { ACDT_NONE, ACDT_INT, ACDT_REAL }
| Defines the type of the extra data item used by the auto constant. More...
enum | ElementType { ET_INT, ET_REAL }
| Defines the base element type of the auto constant. More...
## Public Member Functions
| GpuProgramParameters ()
| ~GpuProgramParameters ()
| GpuProgramParameters (const GpuProgramParameters &oth)
| Copy constructor.
GpuProgramParameters & | operator= (const GpuProgramParameters &oth)
| Operator = overload.
void | _setNamedConstants (const GpuNamedConstants *constantmap)
| Internal method for providing a link to a name->definition map for parameters.
void | _setLogicalIndexes (GpuLogicalBufferStruct *floatIndexMap, GpuLogicalBufferStruct *intIndexMap)
| Internal method for providing a link to a logical index->physical index map for parameters.
bool | hasNamedParameters () const
| Does this parameter set include named parameters?
bool | hasLogicalIndexedParameters () const
| Does this parameter set include logically indexed parameters?
void | setConstant (size_t index, const Vector4 &vec)
| Sets a 4-element floating-point parameter to the program.
void | setConstant (size_t index, Real val)
| Sets a single 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 | _writeRawConstants (size_t physicalIndex, const float *val, size_t count)
| Write a series of floating point values into the underlying float constant buffer at the given physical index.
void | _writeRawConstants (size_t physicalIndex, const double *val, size_t count)
| Write a series of floating point values into the underlying float constant buffer at the given physical index.
void | _writeRawConstants (size_t physicalIndex, const int *val, size_t count)
| Write a series of integer values into the underlying integer constant buffer at the given physical index.
void | _readRawConstants (size_t physicalIndex, size_t count, float *dest)
| Read a series of floating point values from the underlying float constant buffer at the given physical index.
void | _readRawConstants (size_t physicalIndex, size_t count, int *dest)
| Read a series of integer values from the underlying integer constant buffer at the given physical index.
void | _writeRawConstant (size_t physicalIndex, const Vector4 &vec, size_t count=4)
| Write a 4-element floating-point parameter to the program directly to the underlying constants buffer.
void | _writeRawConstant (size_t physicalIndex, Real val)
| Write a single floating-point parameter to the program.
void | _writeRawConstant (size_t physicalIndex, int val)
| Write a single integer parameter to the program.
void | _writeRawConstant (size_t physicalIndex, const Vector3 &vec)
| Write a 3-element floating-point parameter to the program via Vector3.
void | _writeRawConstant (size_t physicalIndex, const Matrix4 &m)
| Write a Matrix4 parameter to the program.
void | _writeRawConstant (size_t physicalIndex, const Matrix4 *m, size_t numEntries)
| Write a list of Matrix4 parameters to the program.
void | _writeRawConstant (size_t physicalIndex, const ColourValue &colour, size_t count=4)
| Write a ColourValue parameter to the program.
GpuConstantDefinitionIterator | getConstantDefinitionIterator (void) const
| Gets an iterator over the named GpuConstantDefinition instances as defined by the program for which these parameters exist.
const GpuConstantDefinition & | getConstantDefinition (const String &name) const
| Get a specific GpuConstantDefinition for a named parameter.
const GpuNamedConstants & | getConstantDefinitions () const
| Get the full list of GpuConstantDefinition instances.
const GpuLogicalBufferStruct * | getFloatLogicalBufferStruct () const
| Get the current list of mappings from low-level logical param indexes to physical buffer locations in the float buffer.
size_t | getFloatLogicalIndexForPhysicalIndex (size_t physicalIndex)
| Retrieves the logical index relating to a physical index in the float buffer, for programs which support that (low-level programs and high-level programs which use logical parameter indexes).
size_t | getIntLogicalIndexForPhysicalIndex (size_t physicalIndex)
| Retrieves the logical index relating to a physical index in the int buffer, for programs which support that (low-level programs and high-level programs which use logical parameter indexes).
const GpuLogicalBufferStruct * | getIntLogicalBufferStruct () const
| Get the current list of mappings from low-level logical param indexes to physical buffer locations in the integer buffer.
const FloatConstantList & | getFloatConstantList () const
| Get a reference to the list of float constants.
float * | getFloatPointer (size_t pos)
| Get a pointer to the 'nth' item in the float buffer.
const float * | getFloatPointer (size_t pos) const
| Get a pointer to the 'nth' item in the float buffer.
const IntConstantList & | getIntConstantList () const
| Get a reference to the list of int constants.
int * | getIntPointer (size_t pos)
| Get a pointer to the 'nth' item in the int buffer.
const int * | getIntPointer (size_t pos) const
| Get a pointer to the 'nth' item in the int buffer.
const AutoConstantList & | getAutoConstantList () const
| Get a reference to the list of auto constant bindings.
void | setAutoConstant (size_t index, AutoConstantType acType, size_t extraInfo=0)
| Sets up a constant which will automatically be updated by the system.
void | setAutoConstantReal (size_t index, AutoConstantType acType, Real rData)
void | _setRawAutoConstant (size_t physicalIndex, AutoConstantType acType, size_t extraInfo, size_t elementSize=4)
| As setAutoConstant, but sets up the auto constant directly against a physical buffer index.
void | _setRawAutoConstantReal (size_t physicalIndex, AutoConstantType acType, Real rData, size_t elementSize=4)
| As setAutoConstantReal, but sets up the auto constant directly against a physical buffer index.
void | clearAutoConstant (size_t index)
| Unbind an auto constant so that the constant is manually controlled again.
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.
size_t | getAutoConstantCount (void) const
| Gets the number of int constants that have been set.
AutoConstantEntry * | getAutoConstantEntry (const size_t index)
| Gets a specific Auto Constant entry if index is in valid range otherwise returns a NULL.
bool | hasAutoConstants (void) const
| Returns true if this instance has any automatic constants.
const AutoConstantEntry * | findFloatAutoConstantEntry (size_t logicalIndex)
| Finds an auto constant that's affecting a given logical parameter index for floating-point values.
const AutoConstantEntry * | findIntAutoConstantEntry (size_t logicalIndex)
| Finds an auto constant that's affecting a given logical parameter index for integer values.
const AutoConstantEntry * | findAutoConstantEntry (const String &paramName)
| Finds an auto constant that's affecting a given named parameter index.
const AutoConstantEntry * | _findRawAutoConstantEntryFloat (size_t physicalIndex)
| Finds an auto constant that's affecting a given physical position in the floating-point buffer.
const AutoConstantEntry * | _findRawAutoConstantEntryInt (size_t physicalIndex)
| Finds an auto constant that's affecting a given physical position in the integer buffer.
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 | setIgnoreMissingParams (bool state)
| Tells the program whether to ignore missing parameters or not.
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, size_t multiple=4)
| Sets a multiple value constant floating-point parameter to the program.
void | setNamedConstant (const String &name, const double *val, size_t count, size_t multiple=4)
| 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, size_t multiple=4)
| Sets a multiple value constant floating-point 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 | setNamedAutoConstantReal (const String &name, AutoConstantType acType, Real rData)
void | setNamedConstantFromTime (const String &name, Real factor)
| Sets a named parameter up to track a derivation of the current time.
void | clearNamedAutoConstant (const String &name)
| Unbind an auto constant so that the constant is manually controlled again.
const GpuConstantDefinition * | _findNamedConstantDefinition (const String &name, bool throwExceptionIfMissing=false) const
| Find a constant definition for a named parameter.
size_t | _getFloatConstantPhysicalIndex (size_t logicalIndex, size_t requestedSize)
| Gets the physical buffer index associated with a logical float constant index.
size_t | _getIntConstantPhysicalIndex (size_t logicalIndex, size_t requestedSize)
| Gets the physical buffer index associated with a logical int constant index.
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.
void | incPassIterationNumber (void)
| increments the multipass number entry by 1 if it exists
bool | hasPassIterationNumber () const
| Does this parameters object have a pass iteration number constant?
size_t | getPassIterationNumberIndex () const
| Get the physical buffer index of the pass iteration number constant.
## Static Public Member Functions
static const AutoConstantDefinition * | getAutoConstantDefinition (const String &name)
| gets the auto constant definition associated with name if found else returns NULL
static const AutoConstantDefinition * | getAutoConstantDefinition (const size_t idx)
| gets the auto constant definition using an index into the auto constant definition array.
static size_t | getNumAutoConstantDefinitions (void)
| Returns the number of auto constant definitions.
## Protected Attributes
FloatConstantList | mFloatConstants
| Packed list of floating-point constants (physical indexing).
IntConstantList | mIntConstants
| Packed list of integer constants (physical indexing).
GpuLogicalBufferStruct * | mFloatLogicalToPhysical
| Logical index to physical index map - for low-level programs or high-level programs which pass params this way.
GpuLogicalBufferStruct * | mIntLogicalToPhysical
| Logical index to physical index map - for low-level programs or high-level programs which pass params this way.
const GpuNamedConstants * | mNamedConstants
| Mapping from parameter names to def - high-level programs are expected to populate this.
AutoConstantList | mAutoConstants
| List of automatically updated parameters.
bool | mTransposeMatrices
| Do we need to transpose matrices?
bool | mIgnoreMissingParams
| flag to indicate if names not found will be ignored
size_t | mActivePassIterationIndex
| physical index for active pass iteration parameter real constant entry;
## Static Protected Attributes
static AutoConstantDefinition | AutoConstantDictionary []
## Classes
struct | AutoConstantDefinition
| Structure defining an auto constant that's available for use in a parameters object. More...
class | AutoConstantEntry
| Structure recording the use of an automatic parameter. More...

## 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 GpuProgram and may be shared between multiple Pass instances. For this reason they are managed using a shared pointer, which will ensure they are automatically deleted when no Pass is using them anymore.

  High-level programs use named parameters (uniforms), low-level programs use indexed constants. This class supports both, but you can tell whether named constants are supported by calling hasNamedParameters(). There are references in the documentation below to 'logical' and 'physical' indexes; logical indexes are the indexes used by low-level programs and represent indexes into an array of float4's, some of which may be settable, some of which may be predefined constants in the program. We only store those constants which have actually been set, therefore our buffer could have gaps if we used the logical indexes in our own buffers. So instead we map these logical indexes to physical indexes in our buffer. When using high-level programs, logical indexes don't necessarily exist, although they might if the high-level program has a direct, exposed mapping from parameter names to logical indexes. In addition, high-level languages may or may not pack arrays of elements that are smaller than float4 (e.g. float2/vec2) contiguously. This kind of information is held in the ConstantDefinition structure which is only populated for high-level programs. You don't have to worry about any of this unless you intend to read parameters back from this structure rather than just setting them.

Definition at line 224 of file OgreGpuProgram.h.

## Member Typedef Documentation

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

| Definition at line 1018 of file OgreGpuProgram.h.

typedef std::vector<AutoConstantEntry> Ogre::GpuProgramParameters::AutoConstantList

| Definition at line 682 of file OgreGpuProgram.h.

typedef std::vector<float> Ogre::GpuProgramParameters::FloatConstantList

| Definition of container that holds the current float constants. Note: Not necessarily in direct index order to constant indexes, logical to physical index map is derived from GpuProgram Definition at line 688 of file OgreGpuProgram.h.

typedef std::vector<int> Ogre::GpuProgramParameters::IntConstantList

| Definition of container that holds the current float constants. Note: Not necessarily in direct index order to constant indexes, logical to physical index map is derived from GpuProgram Definition at line 693 of file OgreGpuProgram.h.

## Member Enumeration Documentation

enum Ogre::GpuProgramParameters::ACDataType

  | Defines the type of the extra data item used by the auto constant. Enumeration values:
  ACDT_NONE | no data is required
  ACDT_INT | the auto constant requires data of type int
  ACDT_REAL | the auto constant requires data of type real
Definition at line 615 of file OgreGpuProgram.h.

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_INVERSE_WORLD_MATRIX | The current world matrix, inverted.
  ACT_TRANSPOSE_WORLD_MATRIX | Provides transpose of world matrix. Equivalent to RenderMonkey's "WorldTranspose".
  ACT_INVERSE_TRANSPOSE_WORLD_MATRIX | The current world matrix, inverted & transposed.
  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_INVERSE_VIEW_MATRIX | The current view matrix, inverted.
  ACT_TRANSPOSE_VIEW_MATRIX | Provides transpose of view matrix. Equivalent to RenderMonkey's "ViewTranspose".
  ACT_INVERSE_TRANSPOSE_VIEW_MATRIX | Provides inverse transpose of view matrix. Equivalent to RenderMonkey's "ViewInverseTranspose".
  ACT_PROJECTION_MATRIX | The current projection matrix.
  ACT_INVERSE_PROJECTION_MATRIX | Provides inverse of projection matrix. Equivalent to RenderMonkey's "ProjectionInverse".
  ACT_TRANSPOSE_PROJECTION_MATRIX | Provides transpose of projection matrix. Equivalent to RenderMonkey's "ProjectionTranspose".
  ACT_INVERSE_TRANSPOSE_PROJECTION_MATRIX | Provides inverse transpose of projection matrix. Equivalent to RenderMonkey's "ProjectionInverseTranspose".
  ACT_VIEWPROJ_MATRIX | The current view & projection matrices concatenated.
  ACT_INVERSE_VIEWPROJ_MATRIX | Provides inverse of concatenated view and projection matrices. Equivalent to RenderMonkey's "ViewProjectionInverse".
  ACT_TRANSPOSE_VIEWPROJ_MATRIX | Provides transpose of concatenated view and projection matrices. Equivalent to RenderMonkey's "ViewProjectionTranspose".
  ACT_INVERSE_TRANSPOSE_VIEWPROJ_MATRIX | Provides inverse transpose of concatenated view and projection matrices. Equivalent to RenderMonkey's "ViewProjectionInverseTranspose".
  ACT_WORLDVIEW_MATRIX | The current world & view matrices concatenated.
  ACT_INVERSE_WORLDVIEW_MATRIX | The current world & view matrices concatenated, then inverted.
  ACT_TRANSPOSE_WORLDVIEW_MATRIX | Provides transpose of concatenated world and view matrices. Equivalent to RenderMonkey's "WorldViewTranspose".
  ACT_INVERSE_TRANSPOSE_WORLDVIEW_MATRIX | The current world & view matrices concatenated, then inverted & tranposed.
  ACT_WORLDVIEWPROJ_MATRIX | view matrices. The current world, view & projection matrices concatenated
  ACT_INVERSE_WORLDVIEWPROJ_MATRIX | Provides inverse of concatenated world, view and projection matrices. Equivalent to RenderMonkey's "WorldViewProjectionInverse".
  ACT_TRANSPOSE_WORLDVIEWPROJ_MATRIX | Provides transpose of concatenated world, view and projection matrices. Equivalent to RenderMonkey's "WorldViewProjectionTranspose".
  ACT_INVERSE_TRANSPOSE_WORLDVIEWPROJ_MATRIX | Provides inverse transpose of concatenated world, view and projection matrices. Equivalent to RenderMonkey's "WorldViewProjectionInverseTranspose".
  ACT_RENDER_TARGET_FLIPPING | -1 if requires texture flipping, +1 otherwise. It's useful when you bypassed projection matrix transform, still able use this value to adjust transformed y position.
  ACT_FOG_COLOUR | Fog colour.
  ACT_FOG_PARAMS | Fog params: density, linear start, linear end, 1/(end-start).
  ACT_SURFACE_AMBIENT_COLOUR | Surface ambient colour, as set in Pass::setAmbient.
  ACT_SURFACE_DIFFUSE_COLOUR | Surface diffuse colour, as set in Pass::setDiffuse.
  ACT_SURFACE_SPECULAR_COLOUR | Surface specular colour, as set in Pass::setSpecular.
  ACT_SURFACE_EMISSIVE_COLOUR | Surface emissive colour, as set in Pass::setSelfIllumination.
  ACT_SURFACE_SHININESS | Surface shininess, as set in Pass::setShininess.
  ACT_AMBIENT_LIGHT_COLOUR | The ambient light colour set in the scene.
  ACT_LIGHT_DIFFUSE_COLOUR | Light diffuse colour (index determined by setAutoConstant call).
  ACT_LIGHT_SPECULAR_COLOUR | Light specular colour (index determined by setAutoConstant call).
  ACT_LIGHT_ATTENUATION | Light attenuation parameters, Vector4(range, constant, linear, quadric).
  ACT_SPOTLIGHT_PARAMS | Spotlight parameters, Vector4(innerFactor, outerFactor, falloff, isSpot) innerFactor and outerFactor are cos(angle/2) The isSpot parameter is 0.0f for non-spotlights, 1.0f for spotlights. Also for non-spotlights the inner and outer factors are 1 and nearly 1 respectively
  ACT_LIGHT_POSITION | A light position 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_POSITION_VIEW_SPACE | A light position in view space (index determined by setAutoConstant call).
  ACT_LIGHT_DIRECTION | A light direction in world space (index determined by setAutoConstant call).
  ACT_LIGHT_DIRECTION_OBJECT_SPACE | A light direction in object space (index determined by setAutoConstant call).
  ACT_LIGHT_DIRECTION_VIEW_SPACE | A light direction in view 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_LIGHT_POWER_SCALE | Light power level, a single scalar as set in Light::setPowerScale (index determined by setAutoConstant call).
  ACT_LIGHT_DIFFUSE_COLOUR_ARRAY | Array of light diffuse colours (count set by extra param).
  ACT_LIGHT_SPECULAR_COLOUR_ARRAY | Array of light specular colours (count set by extra param).
  ACT_LIGHT_ATTENUATION_ARRAY | Array of light attenuation parameters, Vector4(range, constant, linear, quadric) (count set by extra param).
  ACT_LIGHT_POSITION_ARRAY | Array of light positions in world space (count set by extra param).
  ACT_LIGHT_POSITION_OBJECT_SPACE_ARRAY | Array of light positions in object space (count set by extra param).
  ACT_LIGHT_POSITION_VIEW_SPACE_ARRAY | Array of light positions in view space (count set by extra param).
  ACT_LIGHT_DIRECTION_ARRAY | Array of light directions in world space (count set by extra param).
  ACT_LIGHT_DIRECTION_OBJECT_SPACE_ARRAY | Array of light directions in object space (count set by extra param).
  ACT_LIGHT_DIRECTION_VIEW_SPACE_ARRAY | Array of light directions in view space (count set by extra param).
  ACT_LIGHT_DISTANCE_OBJECT_SPACE_ARRAY | Array of distances of the lights from the center of the object a useful approximation as an alternative to per-vertex distance calculations. (count set by extra param)
  ACT_LIGHT_POWER_SCALE_ARRAY | Array of light power levels, a single scalar as set in Light::setPowerScale (count set by extra param).
  ACT_SPOTLIGHT_PARAMS_ARRAY | Spotlight parameters array of Vector4(innerFactor, outerFactor, falloff, isSpot) innerFactor and outerFactor are cos(angle/2) The isSpot parameter is 0.0f for non-spotlights, 1.0f for spotlights. Also for non-spotlights the inner and outer factors are 1 and nearly 1 respectively. (count set by extra param)
  ACT_DERIVED_AMBIENT_LIGHT_COLOUR | The derived ambient light colour, with 'r', 'g', 'b' components filled with product of surface ambient colour and ambient light colour, respectively, and 'a' component filled with surface ambient alpha component.
  ACT_DERIVED_SCENE_COLOUR | The derived scene colour, with 'r', 'g' and 'b' components filled with sum of derived ambient light colour and surface emissive colour, respectively, and 'a' component filled with surface diffuse alpha component.
  ACT_DERIVED_LIGHT_DIFFUSE_COLOUR | The derived light diffuse colour (index determined by setAutoConstant call), with 'r', 'g' and 'b' components filled with product of surface diffuse colour and light diffuse colour, respectively, and 'a' component filled with surface diffuse alpha component.
  ACT_DERIVED_LIGHT_SPECULAR_COLOUR | The derived light specular colour (index determined by setAutoConstant call), with 'r', 'g' and 'b' components filled with product of surface specular colour and light specular colour, respectively, and 'a' component filled with surface specular alpha component.
  ACT_DERIVED_LIGHT_DIFFUSE_COLOUR_ARRAY | Array of derived light diffuse colours (count set by extra param).
  ACT_DERIVED_LIGHT_SPECULAR_COLOUR_ARRAY | Array of derived light specular colours (count set by extra param).
  ACT_SHADOW_EXTRUSION_DISTANCE | The distance a shadow volume should be extruded when using finite extrusion programs.
  ACT_CAMERA_POSITION | The current camera's position in world space.
  ACT_CAMERA_POSITION_OBJECT_SPACE | The current camera's position in object space.
  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.
  ACT_TIME | provides current elapsed time
  ACT_TIME_0_X | Single float value, which repeats itself based on given as parameter "cycle time". Equivalent to RenderMonkey's "Time0_X".
  ACT_COSTIME_0_X | Cosine of "Time0_X". Equivalent to RenderMonkey's "CosTime0_X".
  ACT_SINTIME_0_X | Sine of "Time0_X". Equivalent to RenderMonkey's "SinTime0_X".
  ACT_TANTIME_0_X | Tangent of "Time0_X". Equivalent to RenderMonkey's "TanTime0_X".
  ACT_TIME_0_X_PACKED | Vector of "Time0_X", "SinTime0_X", "CosTime0_X", "TanTime0_X". Equivalent to RenderMonkey's "Time0_X_Packed".
  ACT_TIME_0_1 | Single float value, which represents scaled time value [0..1], which repeats itself based on given as parameter "cycle time". Equivalent to RenderMonkey's "Time0_1".
  ACT_COSTIME_0_1 | Cosine of "Time0_1". Equivalent to RenderMonkey's "CosTime0_1".
  ACT_SINTIME_0_1 | Sine of "Time0_1". Equivalent to RenderMonkey's "SinTime0_1".
  ACT_TANTIME_0_1 | Tangent of "Time0_1". Equivalent to RenderMonkey's "TanTime0_1".
  ACT_TIME_0_1_PACKED | Vector of "Time0_1", "SinTime0_1", "CosTime0_1", "TanTime0_1". Equivalent to RenderMonkey's "Time0_1_Packed".
  ACT_TIME_0_2PI | Single float value, which represents scaled time value [0..2*Pi], which repeats itself based on given as parameter "cycle time". Equivalent to RenderMonkey's "Time0_2PI".
  ACT_COSTIME_0_2PI | Cosine of "Time0_2PI". Equivalent to RenderMonkey's "CosTime0_2PI".
  ACT_SINTIME_0_2PI | Sine of "Time0_2PI". Equivalent to RenderMonkey's "SinTime0_2PI".
  ACT_TANTIME_0_2PI | Tangent of "Time0_2PI". Equivalent to RenderMonkey's "TanTime0_2PI".
  ACT_TIME_0_2PI_PACKED | Vector of "Time0_2PI", "SinTime0_2PI", "CosTime0_2PI", "TanTime0_2PI". Equivalent to RenderMonkey's "Time0_2PI_Packed".
  ACT_FRAME_TIME | provides the scaled frame time, returned as a floating point value.
  ACT_FPS | provides the calculated frames per second, returned as a floating point value.
  ACT_VIEWPORT_WIDTH | Current viewport width (in pixels) as floating point value. Equivalent to RenderMonkey's "ViewportWidth".
  ACT_VIEWPORT_HEIGHT | Current viewport height (in pixels) as floating point value. Equivalent to RenderMonkey's "ViewportHeight".
  ACT_INVERSE_VIEWPORT_WIDTH | This variable represents 1.0/ViewportWidth. Equivalent to RenderMonkey's "ViewportWidthInverse".
  ACT_INVERSE_VIEWPORT_HEIGHT | This variable represents 1.0/ViewportHeight. Equivalent to RenderMonkey's "ViewportHeightInverse".
  ACT_VIEWPORT_SIZE | Packed of "ViewportWidth", "ViewportHeight", "ViewportWidthInverse", "ViewportHeightInverse".
  ACT_VIEW_DIRECTION | This variable provides the view direction vector (world space). Equivalent to RenderMonkey's "ViewDirection".
  ACT_VIEW_SIDE_VECTOR | This variable provides the view side vector (world space). Equivalent to RenderMonkey's "ViewSideVector".
  ACT_VIEW_UP_VECTOR | This variable provides the view up vector (world space). Equivalent to RenderMonkey's "ViewUpVector".
  ACT_FOV | This variable provides the field of view as a floating point value. Equivalent to RenderMonkey's "FOV".
  ACT_NEAR_CLIP_DISTANCE | This variable provides the near clip distance as a floating point value. Equivalent to RenderMonkey's "NearClipPlane".
  ACT_FAR_CLIP_DISTANCE | This variable provides the far clip distance as a floating point value. Equivalent to RenderMonkey's "FarClipPlane".
  ACT_PASS_NUMBER | provides the pass index number within the technique of the active materil.
  ACT_PASS_ITERATION_NUMBER | provides the current iteration number of the pass. The iteration number is the number of times the current render operation has been drawn for the acitve pass.
  ACT_ANIMATION_PARAMETRIC | Provides a parametric animation value [0..1], only available where the renderable specifically implements it.
  ACT_TEXEL_OFFSETS | Provides the texel offsets required by this rendersystem to map texels to pixels. Packed as float4(absoluteHorizontalOffset, absoluteVerticalOffset, horizontalOffset / viewportWidth, verticalOffset / viewportHeight)
  ACT_SCENE_DEPTH_RANGE | Provides information about the depth range of the scene as viewed from the current camera. Passed as float4(minDepth, maxDepth, depthRange, 1 / depthRange)
  ACT_SHADOW_SCENE_DEPTH_RANGE | Provides information about the depth range of the scene as viewed from a given shadow camera. Requires an index parameter which maps to a light index relative to the current light list. Passed as float4(minDepth, maxDepth, depthRange, 1 / depthRange)
  ACT_TEXTURE_SIZE | Provides texture size of the texture unit (index determined by setAutoConstant call). Packed as float4(width, height, depth, 1)
  ACT_INVERSE_TEXTURE_SIZE | Provides inverse texture size of the texture unit (index determined by setAutoConstant call). Packed as float4(1 / width, 1 / height, 1 / depth, 1)
  ACT_PACKED_TEXTURE_SIZE | Provides packed texture size of the texture unit (index determined by setAutoConstant call). Packed as float4(width, height, 1 / width, 1 / height)
Definition at line 230 of file OgreGpuProgram.h.

enum Ogre::GpuProgramParameters::ElementType

  | Defines the base element type of the auto constant. Enumeration values:
  ET_INT |
  ET_REAL |
Definition at line 626 of file OgreGpuProgram.h.

## Constructor & Destructor Documentation

Ogre::GpuProgramParameters::GpuProgramParameters | ( |  | ) |

Ogre::GpuProgramParameters::~GpuProgramParameters | ( |  | ) |

| Definition at line 720 of file OgreGpuProgram.h.

Ogre::GpuProgramParameters::GpuProgramParameters | ( | const GpuProgramParameters & | oth | ) |

| Copy constructor.

## Member Function Documentation

const GpuConstantDefinition* Ogre::GpuProgramParameters::_findNamedConstantDefinition | ( | const String & | name,
|  | bool | throwExceptionIfMissing = `false`
| ) | const

  | Find a constant definition for a named parameter. Remarks: This method returns null if the named parameter did not exist, unlike getConstantDefinition which is more strict; unless you set the last parameter to true. Parameters:
  | name | The name to look up
  | throwExceptionIfMissing | If set to true, failure to find an entry will throw an exception.

const AutoConstantEntry* Ogre::GpuProgramParameters::_findRawAutoConstantEntryFloat | ( | size_t | physicalIndex | ) |

| Finds an auto constant that's affecting a given physical position in the floating-point buffer.

const AutoConstantEntry* Ogre::GpuProgramParameters::_findRawAutoConstantEntryInt | ( | size_t | physicalIndex | ) |

| Finds an auto constant that's affecting a given physical position in the integer buffer.

size_t Ogre::GpuProgramParameters::_getFloatConstantPhysicalIndex | ( | size_t | logicalIndex,
|  | size_t | requestedSize
| ) |

  | Gets the physical buffer index associated with a logical float constant index. Note: Only applicable to low-level programs. Parameters:
  | logicalIndex | The logical parameter index
  | requestedSize | The requested size - pass 0 to ignore missing entries and return std::numeric_limits<size_t>::max()

size_t Ogre::GpuProgramParameters::_getIntConstantPhysicalIndex | ( | size_t | logicalIndex,
|  | size_t | requestedSize
| ) |

  | Gets the physical buffer index associated with a logical int constant index. Note: Only applicable to low-level programs. Parameters:
  | logicalIndex | The logical parameter index
  | requestedSize | The requested size - pass 0 to ignore missing entries and return std::numeric_limits<size_t>::max()

void Ogre::GpuProgramParameters::_readRawConstants | ( | size_t | physicalIndex,
|  | size_t | count,
|  | int * | dest
| ) |

  | Read a series of integer values from the underlying integer constant buffer at the given physical index. Parameters:
  | physicalIndex | The buffer position to start reading
  | count | The number of ints to read
  | dest | Pointer to a buffer to receive the values

void Ogre::GpuProgramParameters::_readRawConstants | ( | size_t | physicalIndex,
|  | size_t | count,
|  | float * | dest
| ) |

  | Read a series of floating point values from the underlying float constant buffer at the given physical index. Parameters:
  | physicalIndex | The buffer position to start reading
  | count | The number of floats to read
  | dest | Pointer to a buffer to receive the values

void Ogre::GpuProgramParameters::_setLogicalIndexes | ( | GpuLogicalBufferStruct * | floatIndexMap,
|  | GpuLogicalBufferStruct * | intIndexMap
| ) |

| Internal method for providing a link to a logical index->physical index map for parameters.

void Ogre::GpuProgramParameters::_setNamedConstants | ( | const GpuNamedConstants * | constantmap | ) |

| Internal method for providing a link to a name->definition map for parameters.

void Ogre::GpuProgramParameters::_setRawAutoConstant | ( | size_t | physicalIndex,
|  | AutoConstantType | acType,
|  | size_t | extraInfo,
|  | size_t | elementSize = `4`
| ) |

| As setAutoConstant, but sets up the auto constant directly against a physical buffer index.

void Ogre::GpuProgramParameters::_setRawAutoConstantReal | ( | size_t | physicalIndex,
|  | AutoConstantType | acType,
|  | Real | rData,
|  | size_t | elementSize = `4`
| ) |

| As setAutoConstantReal, but sets up the auto constant directly against a physical buffer 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::_writeRawConstant | ( | size_t | physicalIndex,
|  | const ColourValue & | colour,
|  | size_t | count = `4`
| ) |

  | Write a ColourValue parameter to the program. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | colour | The value to set
  | count | The number of floats to write; if for example the uniform constant 'slot' is smaller than a Vector4

void Ogre::GpuProgramParameters::_writeRawConstant | ( | size_t | physicalIndex,
|  | const Matrix4 * | m,
|  | size_t | numEntries
| ) |

  | Write a list of Matrix4 parameters to the program. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | numEntries | Number of Matrix4 entries

void Ogre::GpuProgramParameters::_writeRawConstant | ( | size_t | physicalIndex,
|  | const Matrix4 & | m
| ) |

  | Write a Matrix4 parameter to the program. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | m | The value to set

void Ogre::GpuProgramParameters::_writeRawConstant | ( | size_t | physicalIndex,
|  | const Vector3 & | vec
| ) |

  | Write a 3-element floating-point parameter to the program via Vector3. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | vec | The value to set

void Ogre::GpuProgramParameters::_writeRawConstant | ( | size_t | physicalIndex,
|  | int | val
| ) |

  | Write a single integer parameter to the program. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | val | The value to set

void Ogre::GpuProgramParameters::_writeRawConstant | ( | size_t | physicalIndex,
|  | Real | val
| ) |

  | Write a single floating-point parameter to the program. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | val | The value to set

void Ogre::GpuProgramParameters::_writeRawConstant | ( | size_t | physicalIndex,
|  | const Vector4 & | vec,
|  | size_t | count = `4`
| ) |

  | Write a 4-element floating-point parameter to the program directly to the underlying constants buffer. Note: You can use these methods if you have already derived the physical constant buffer location, for a slight speed improvement over using the named / logical index versions. Parameters:
  | physicalIndex | The physical buffer index at which to place the parameter
  | vec | The value to set
  | count | The number of floats to write; if for example the uniform constant 'slot' is smaller than a Vector4

void Ogre::GpuProgramParameters::_writeRawConstants | ( | size_t | physicalIndex,
|  | const int * | val,
|  | size_t | count
| ) |

  | Write a series of integer values into the underlying integer constant buffer at the given physical index. Parameters:
  | physicalIndex | The buffer position to start writing
  | val | Pointer to a list of values to write
  | count | The number of ints to write

void Ogre::GpuProgramParameters::_writeRawConstants | ( | size_t | physicalIndex,
|  | const double * | val,
|  | size_t | count
| ) |

  | Write a series of floating point values into the underlying float constant buffer at the given physical index. Parameters:
  | physicalIndex | The buffer position to start writing
  | val | Pointer to a list of values to write
  | count | The number of floats to write

void Ogre::GpuProgramParameters::_writeRawConstants | ( | size_t | physicalIndex,
|  | const float * | val,
|  | size_t | count
| ) |

  | Write a series of floating point values into the underlying float constant buffer at the given physical index. Parameters:
  | physicalIndex | The buffer position to start writing
  | val | Pointer to a list of values to write
  | count | The number of floats to write

void Ogre::GpuProgramParameters::clearAutoConstant | ( | size_t | index | ) |

| Unbind an auto constant so that the constant is manually controlled again.

void Ogre::GpuProgramParameters::clearAutoConstants | ( | void |  | ) |

| Clears all the existing automatic constants.

void Ogre::GpuProgramParameters::clearNamedAutoConstant | ( | const String & | name | ) |

| Unbind an auto constant so that the constant is manually controlled again.

void Ogre::GpuProgramParameters::copyConstantsFrom | ( | const GpuProgramParameters & | source | ) |

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

const AutoConstantEntry* Ogre::GpuProgramParameters::findAutoConstantEntry | ( | const String & | paramName | ) |

| Finds an auto constant that's affecting a given named parameter index. Note: Only applicable to high-level programs.

const AutoConstantEntry* Ogre::GpuProgramParameters::findFloatAutoConstantEntry | ( | size_t | logicalIndex | ) |

| Finds an auto constant that's affecting a given logical parameter index for floating-point values. Note: Only applicable for low-level programs.

const AutoConstantEntry* Ogre::GpuProgramParameters::findIntAutoConstantEntry | ( | size_t | logicalIndex | ) |

| Finds an auto constant that's affecting a given logical parameter index for integer values. Note: Only applicable for low-level programs.

size_t Ogre::GpuProgramParameters::getAutoConstantCount | ( | void |  | ) | const

| Gets the number of int constants that have been set. Definition at line 1022 of file OgreGpuProgram.h.

static const AutoConstantDefinition* Ogre::GpuProgramParameters::getAutoConstantDefinition | ( | const size_t | idx | ) | `[static]`

  | gets the auto constant definition using an index into the auto constant definition array. If the index is out of bounds then NULL is returned; Parameters:
  | idx | The auto constant index

static const AutoConstantDefinition* Ogre::GpuProgramParameters::getAutoConstantDefinition | ( | const String & | name | ) | `[static]`

  | gets the auto constant definition associated with name if found else returns NULL Parameters:
  | name | The name of the auto constant

AutoConstantEntry* Ogre::GpuProgramParameters::getAutoConstantEntry | ( | const size_t | index | ) |

| Gets a specific Auto Constant entry if index is in valid range otherwise returns a NULL. index which entry is to be retrieved

AutoConstantIterator Ogre::GpuProgramParameters::getAutoConstantIterator | ( | void |  | ) | const

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

const AutoConstantList& Ogre::GpuProgramParameters::getAutoConstantList | ( |  | ) | const

| Get a reference to the list of auto constant bindings. Definition at line 977 of file OgreGpuProgram.h.

const GpuConstantDefinition& Ogre::GpuProgramParameters::getConstantDefinition | ( | const String & | name | ) | const

| Get a specific GpuConstantDefinition for a named parameter. Note: Only available if this parameters object has named parameters.

GpuConstantDefinitionIterator Ogre::GpuProgramParameters::getConstantDefinitionIterator | ( | void |  | ) | const

| Gets an iterator over the named GpuConstantDefinition instances as defined by the program for which these parameters exist. Note: Only available if this parameters object has named parameters.

const GpuNamedConstants& Ogre::GpuProgramParameters::getConstantDefinitions | ( |  | ) | const

| Get the full list of GpuConstantDefinition instances. Note: Only available if this parameters object has named parameters.

const FloatConstantList& Ogre::GpuProgramParameters::getFloatConstantList | ( |  | ) | const

| Get a reference to the list of float constants. Definition at line 965 of file OgreGpuProgram.h.

const GpuLogicalBufferStruct* Ogre::GpuProgramParameters::getFloatLogicalBufferStruct | ( |  | ) | const

| Get the current list of mappings from low-level logical param indexes to physical buffer locations in the float buffer. Note: Only applicable to low-level programs. Definition at line 943 of file OgreGpuProgram.h.

size_t Ogre::GpuProgramParameters::getFloatLogicalIndexForPhysicalIndex | ( | size_t | physicalIndex | ) |

| Retrieves the logical index relating to a physical index in the float buffer, for programs which support that (low-level programs and high-level programs which use logical parameter indexes). Returns: std::numeric_limits<size_t>::max() if not found

const float* Ogre::GpuProgramParameters::getFloatPointer | ( | size_t | pos | ) | const

| Get a pointer to the 'nth' item in the float buffer. Definition at line 969 of file OgreGpuProgram.h.

float* Ogre::GpuProgramParameters::getFloatPointer | ( | size_t | pos | ) |

| Get a pointer to the 'nth' item in the float buffer. Definition at line 967 of file OgreGpuProgram.h.

const IntConstantList& Ogre::GpuProgramParameters::getIntConstantList | ( |  | ) | const

| Get a reference to the list of int constants. Definition at line 971 of file OgreGpuProgram.h.

const GpuLogicalBufferStruct* Ogre::GpuProgramParameters::getIntLogicalBufferStruct | ( |  | ) | const

| Get the current list of mappings from low-level logical param indexes to physical buffer locations in the integer buffer. Note: Only applicable to low-level programs. Definition at line 963 of file OgreGpuProgram.h.

size_t Ogre::GpuProgramParameters::getIntLogicalIndexForPhysicalIndex | ( | size_t | physicalIndex | ) |

| Retrieves the logical index relating to a physical index in the int buffer, for programs which support that (low-level programs and high-level programs which use logical parameter indexes). Returns: std::numeric_limits<size_t>::max() if not found

const int* Ogre::GpuProgramParameters::getIntPointer | ( | size_t | pos | ) | const

| Get a pointer to the 'nth' item in the int buffer. Definition at line 975 of file OgreGpuProgram.h.

int* Ogre::GpuProgramParameters::getIntPointer | ( | size_t | pos | ) |

| Get a pointer to the 'nth' item in the int buffer. Definition at line 973 of file OgreGpuProgram.h.

static size_t Ogre::GpuProgramParameters::getNumAutoConstantDefinitions | ( | void |  | ) | `[static]`

| Returns the number of auto constant definitions.

size_t Ogre::GpuProgramParameters::getPassIterationNumberIndex | ( |  | ) | const

| Get the physical buffer index of the pass iteration number constant. Definition at line 1287 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::getTransposeMatrices | ( | void |  | ) | const

| Gets whether or not matrices are to be transposed when set. Definition at line 1259 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasAutoConstants | ( | void |  | ) | const

| Returns true if this instance has any automatic constants. Definition at line 1029 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasLogicalIndexedParameters | ( |  | ) | const

| Does this parameter set include logically indexed parameters? Note: Not mutually exclusive with hasNamedParameters since some high-level programs still use logical indexes to set the parameters on the rendersystem. Definition at line 742 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasNamedParameters | ( |  | ) | const

| Does this parameter set include named parameters? Definition at line 736 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::hasPassIterationNumber | ( |  | ) | const

| Does this parameters object have a pass iteration number constant? Definition at line 1284 of file OgreGpuProgram.h.

void Ogre::GpuProgramParameters::incPassIterationNumber | ( | void |  | ) |

| increments the multipass number entry by 1 if it exists

GpuProgramParameters& Ogre::GpuProgramParameters::operator= | ( | const GpuProgramParameters & | oth | ) |

| Operator = overload.

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::setAutoConstantReal | ( | size_t | index,
|  | AutoConstantType | acType,
|  | Real | rData
| ) |

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 logical 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 logical 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 logical 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 logical 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 logical 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 logical 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 logical 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,
|  | Real | val
| ) |

  | Sets a single floating-point parameter to the program. Note: This is actually equivalent to calling setConstant(index Vector4(val, 0, 0, 0)) since all constants are 4D. Parameters:
  | index | The logical constant index at which to place the parameter (each constant is a 4D float)
  | val | 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 logical 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::setIgnoreMissingParams | ( | bool | state | ) |

| Tells the program whether to ignore missing parameters or not. Definition at line 1060 of file OgreGpuProgram.h.

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::setNamedAutoConstantReal | ( | const String & | name,
|  | AutoConstantType | acType,
|  | Real | rData
| ) |

void Ogre::GpuProgramParameters::setNamedConstant | ( | const String & | name,
|  | const int * | val,
|  | size_t | count,
|  | size_t | multiple = `4`
| ) |

  | Sets a multiple value constant floating-point parameter to the program. Some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. The 'multiple' parameter allows you to control that although you should only change it if you know your chosen language supports that (at the time of writing, only GLSL allows constants which are not a multiple of 4). 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 'multiples' of floats to write
  | multiple | The number of raw entries in each element to write, the default is 4 so count = 1 would write 4 floats.

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,
|  | size_t | multiple = `4`
| ) |

  | Sets a multiple value constant floating-point parameter to the program. Some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. The 'multiple' parameter allows you to control that although you should only change it if you know your chosen language supports that (at the time of writing, only GLSL allows constants which are not a multiple of 4). 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 'multiples' of floats to write
  | multiple | The number of raw entries in each element to write, the default is 4 so count = 1 would write 4 floats.

void Ogre::GpuProgramParameters::setNamedConstant | ( | const String & | name,
|  | const float * | val,
|  | size_t | count,
|  | size_t | multiple = `4`
| ) |

  | Sets a multiple value constant floating-point parameter to the program. Some systems only allow constants to be set on certain boundaries, e.g. in sets of 4 values for example. The 'multiple' parameter allows you to control that although you should only change it if you know your chosen language supports that (at the time of writing, only GLSL allows constants which are not a multiple of 4). 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 'multiples' of floats to write
  | multiple | The number of raw entries in each element to write, the default is 4 so count = 1 would write 4 floats.

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 1257 of file OgreGpuProgram.h.

## Member Data Documentation

AutoConstantDefinition Ogre::GpuProgramParameters::AutoConstantDictionary[]`[static, protected]`

| Definition at line 696 of file OgreGpuProgram.h.

size_t Ogre::GpuProgramParameters::mActivePassIterationIndex`[protected]`

| physical index for active pass iteration parameter real constant entry; Definition at line 716 of file OgreGpuProgram.h.

AutoConstantList Ogre::GpuProgramParameters::mAutoConstants`[protected]`

| List of automatically updated parameters. Definition at line 710 of file OgreGpuProgram.h.

FloatConstantList Ogre::GpuProgramParameters::mFloatConstants`[protected]`

| Packed list of floating-point constants (physical indexing). Definition at line 698 of file OgreGpuProgram.h.

GpuLogicalBufferStruct* Ogre::GpuProgramParameters::mFloatLogicalToPhysical`[protected]`

| Logical index to physical index map - for low-level programs or high-level programs which pass params this way. Definition at line 703 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::mIgnoreMissingParams`[protected]`

| flag to indicate if names not found will be ignored Definition at line 714 of file OgreGpuProgram.h.

IntConstantList Ogre::GpuProgramParameters::mIntConstants`[protected]`

| Packed list of integer constants (physical indexing). Definition at line 700 of file OgreGpuProgram.h.

GpuLogicalBufferStruct* Ogre::GpuProgramParameters::mIntLogicalToPhysical`[protected]`

| Logical index to physical index map - for low-level programs or high-level programs which pass params this way. Definition at line 706 of file OgreGpuProgram.h.

const GpuNamedConstants* Ogre::GpuProgramParameters::mNamedConstants`[protected]`

| Mapping from parameter names to def - high-level programs are expected to populate this. Definition at line 708 of file OgreGpuProgram.h.

bool Ogre::GpuProgramParameters::mTransposeMatrices`[protected]`

| Do we need to transpose matrices? Definition at line 712 of file OgreGpuProgram.h.

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

- OgreGpuProgram.h

Copyright © 2000-2005 by The OGRE Team
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Thu Mar 6 09:46:48 2008