VolumeViz GLSL shaders data structures and constants.
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Classes |
struct | VVizVoxelInfo |
| Defines voxel state info used with the VolumeViz Shader Library API. More...
|
Defines |
#define | VVizDefaultData VVIZ_DATATYPE(0.0) |
#define | VVizTileInfo vec4 |
Functions |
vec3 | VVizGetVolumeDimensions (in VVizDataSetId dataset) |
vec3 | VVizGetTileDimensions (in VVizDataSetId dataset) |
vec3 | VVizGetVoxelDimensions (in VVizDataSetId dataset) |
int | VVizGetTileResolution (in VVizTileInfo tileInfo) |
VVizTileInfo | VVizGetTileInfo (in VVizDataSetId dataset, in vec3 dataCoord) |
void | VVizGetTileIJKBox (in VVizDataSetId dataset, in vec3 dataCoord, out vec3 tileIJKMin, out vec3 tileIJKMax) |
VVizDataSetId | VVizGetDefaultDataSet () |
vec4 | VVizTextureToObject (in VVizDataSetId dataset, in vec4 texCoord) |
vec3 | VVizTextureToObjectVec (in VVizDataSetId dataset, in vec3 texCoord) |
vec3 | VVizTextureToObjectDir (in VVizDataSetId dataset, in vec3 texCoord) |
vec4 | VVizObjectToTexture (in VVizDataSetId dataset, in vec4 objectCoord) |
vec3 | VVizObjectToTextureVec (in VVizDataSetId dataset, in vec3 objectCoord) |
vec3 | VVizObjectToTextureDir (in VVizDataSetId dataset, in vec3 objectCoord) |
vec4 | VVizTextureToWorld (in VVizDataSetId dataset, in vec4 texCoord) |
vec3 | VVizTextureToWorldVec (in VVizDataSetId dataset, in vec3 texCoord) |
vec3 | VVizTextureToWorldDir (in VVizDataSetId dataset, in vec3 texCoord) |
vec4 | VVizWorldToTexture (in VVizDataSetId dataset, in vec4 worldCoord) |
vec3 | VVizWorldToTextureVec (in VVizDataSetId dataset, in vec3 worldCoord) |
vec3 | VVizWorldToTextureDir (in VVizDataSetId dataset, in vec3 worldCoord) |
vec4 | VVizTextureToTexture (in VVizDataSetId datasetSrc, in VVizDataSetId datasetDst, in vec4 texCoord) |
vec3 | VVizTextureToTextureVec (in VVizDataSetId datasetSrc, in VVizDataSetId datasetDst, in vec3 texCoord) |
vec3 | VVizTextureToTextureDir (in VVizDataSetId datasetSrc, in VVizDataSetId datasetDst, in vec3 texCoord) |
Detailed Description
VolumeViz GLSL shaders data structures and constants.
The following pre-processing directives are dynamically added to the shader pipeline and can be used by application defined shader functions.
- VVIZ_DATARGBA : Is true if VVizData (VolumeViz input data) contains RGBA values.
In this case each value in VVizData is a vec4. Otherwise each value is a float.
(Before Open Inventor 8.5 only float values were supported.)
- VVIZ_DATATYPE : A string defining the GLSL data type in the volume (VVizData).
If VVIZ_DATARGBA is true, then VVIZ_DATATYPE is defined as "vec4", in all other cases it is defined as "float".
(Before Open Inventor 8.5 only type float was supported.)
- VVIZ_NUM_CLIPPING_PLANES : Defines the current numbers of GL clipping planes to take in account.
- VVIZ_SHAPE_TYPE : Define the shape that is currently rendered.
It can be usefull to specialize shader behavior depending on dhape type. It can be VVIZ_VRENDER, VVIZ_SLICE, VVIZ_OBLSLICE, VVIZ_VGEOM, VVIZ_VSKIN or VVIZ_HEIGHTFIELD.
Define Documentation
#define VVizDefaultData VVIZ_DATATYPE(0.0) |
Default voxel value returned by VolumeViz shaders when no data is available.
#define VVizTileInfo vec4 |
Defines internal VolumeViz tile info data storage.
See VVizGetTileResolution, VVizGetTileInfo
Function Documentation
VVizDataSetId VVizGetDefaultDataSet |
( |
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) |
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Returns the default DataSet ID.
vec3 VVizGetTileDimensions |
( |
in VVizDataSetId |
dataset |
) |
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Returns volume dataset tile dimensions in voxels.
- Parameters:
-
| dataset | The dataset to retrieve information from. |
- Returns:
- dataset Tile dimension.
void VVizGetTileIJKBox |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
dataCoord, |
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out vec3 |
tileIJKMin, |
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out vec3 |
tileIJKMax | |
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) |
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Returns VolumeViz tile IJK box info for a specified voxel.
- Parameters:
-
| dataset | The dataset to which the tileinfo belongs. |
| dataCoord | Uniform data coordinates in volume space. |
| tileIJKMin | ijk min of the tile in voxels. |
| tileIJKMax | ijk max of the tile in voxels. |
VVizTileInfo VVizGetTileInfo |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
dataCoord | |
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) |
| | |
Returns VolumeViz tile info for a specified voxel.
- Parameters:
-
| dataset | The dataset to retrieve information from. |
| dataCoord | Uniform data coordinates in volume space. |
- Returns:
- The tileInfo of the voxel at position dataCoord.
int VVizGetTileResolution |
( |
in VVizTileInfo |
tileInfo |
) |
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Returns VolumeViz tile resolution info.
- Parameters:
-
| tileInfo | The tileInfo to retrieve information from. |
- Returns:
- The LDM resolution level of this tile (zero is full resolution).
vec3 VVizGetVolumeDimensions |
( |
in VVizDataSetId |
dataset |
) |
|
Returns volume dimensions of a dataset in voxels.
- Parameters:
-
| dataset | The dataset to retrieve information from. |
- Returns:
- dataset Dimension.
vec3 VVizGetVoxelDimensions |
( |
in VVizDataSetId |
dataset |
) |
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Returns volume dataset uniform voxel dimensions.
- Parameters:
-
| dataset | The dataset to retrieve information from. |
- Returns:
- dataset Voxel uniform dimension.
vec4 VVizObjectToTexture |
( |
in VVizDataSetId |
dataset, |
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in vec4 |
objectCoord | |
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) |
| | |
Converts the input vector from object space to the input dataset's texture space.
Object space corresponds to the space defined by the extent of the dataset.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| objectCoord | The object space vector, in homogeneous coordinates. |
- Returns:
- The converted vector in texture space, in homogeneous coordinates.
vec3 VVizObjectToTextureDir |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
objectCoord | |
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) |
| | |
Converts the input vector from object space to the input dataset's texture space.
Object space corresponds to the space defined by the extent of the dataset.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| objectCoord | The 3D object space vector, assumed to be a direction vector. |
- Returns:
- The converted 3D direction vector in the dataset's texture space. The intermediate homogeneous (vec4) value is converted to 3D by ignoring the W component.
vec3 VVizObjectToTextureVec |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
objectCoord | |
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) |
| | |
Converts the input vector from object space to the input dataset's texture space.
Object space corresponds to the space defined by the extent of the dataset.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| objectCoord | The 3D object space vector, assumed to be a position vector. |
- Returns:
- The converted 3D position vector in the dataset's texture space. The intermediate homogeneous (vec4) value is converted to 3D by dividing the X, Y and Z components by W.
vec4 VVizTextureToObject |
( |
in VVizDataSetId |
dataset, |
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in vec4 |
texCoord | |
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) |
| | |
Converts the input vector from the input dataset's texture space to object space.
Object space corresponds to the space defined by the extent of the dataset.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| texCoord | The texture coordinate vector in homogeneous coordinates. |
- Returns:
- The converted vector in object space in homogeneous coordinates.
vec3 VVizTextureToObjectDir |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
texCoord | |
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) |
| | |
Converts the input vector from the input dataset's texture space to object space.
Object space corresponds to the space defined by the extent of the dataset.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| texCoord | The 3D texture coordinate vector, assumed to be a direction vector. |
- Returns:
- The converted 3D direction vector in object space. The intermediate homogeneous (vec4) value is converted to 3D by ignoring the W component.
vec3 VVizTextureToObjectVec |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
texCoord | |
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) |
| | |
Converts the input vector from the input dataset's texture space to object space.
Object space corresponds to the space defined by the extent of the dataset.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| texCoord | The 3D texture coordinate vector, assumed to be a position vector. |
- Returns:
- The converted 3D position vector in object space. The intermediate homogeneous (vec4) value is converted to 3D by dividing the X, Y and Z components by W.
vec4 VVizTextureToTexture |
( |
in VVizDataSetId |
datasetSrc, |
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in VVizDataSetId |
datasetDst, |
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in vec4 |
texCoord | |
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) |
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Converts the input vector from the texture space of one dataset to the texture space of another dataset.
- Parameters:
-
| datasetSrc | The dataset to which the initial texture space belongs. |
| datasetDst | The dataset to which the final texture space belongs. |
| texCoord | The texture coordinate vector in the initial texture space, in homogeneous coordinates. |
- Returns:
- The converted vector in the destination texture space, in homogeneous coordinates.
vec3 VVizTextureToTextureDir |
( |
in VVizDataSetId |
datasetSrc, |
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in VVizDataSetId |
datasetDst, |
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in vec3 |
texCoord | |
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) |
| | |
Converts the input vector from the texture space of one dataset to the texture space of another dataset.
- Parameters:
-
| datasetSrc | The dataset to which the initial texture space belongs. |
| datasetDst | The dataset to which the final texture space belongs. |
| texCoord | The 3D texture coordinate vector, assumed to be a direction vector. |
- Returns:
- The converted 3D direction vector in the destination texture space. The intermediate homogeneous (vec4) value is converted to 3D by ignoring the W component.
vec3 VVizTextureToTextureVec |
( |
in VVizDataSetId |
datasetSrc, |
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in VVizDataSetId |
datasetDst, |
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in vec3 |
texCoord | |
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) |
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Converts the input vector from the texture space of one dataset to the texture space of another dataset.
- Parameters:
-
| datasetSrc | The dataset to which the initial texture space belongs. |
| datasetDst | The dataset to which the final texture space belongs. |
| texCoord | The 3D texture coordinate vector, assumed to be a position vector. |
- Returns:
- The converted 3D position vector in the destination texture space. The intermediate homogeneous (vec4) value is converted to 3D by dividing the X, Y and Z components by W.
vec4 VVizTextureToWorld |
( |
in VVizDataSetId |
dataset, |
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in vec4 |
texCoord | |
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) |
| | |
Converts the input vector from the input dataset's texture space to world space.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| texCoord | The texture coordinate vector in homogeneous coordinates. |
- Returns:
- The converted vector in world space in homogeneous coordinates.
vec3 VVizTextureToWorldDir |
( |
in VVizDataSetId |
dataset, |
|
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in vec3 |
texCoord | |
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) |
| | |
Converts the input vector from the input dataset's texture space to world space.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| texCoord | The 3D texture coordinate vector, assumed to be a direction vector. |
- Returns:
- The converted 3D direction vector in world space. The intermediate homogeneous (vec4) value is converted to 3D by ignoring the W component.
vec3 VVizTextureToWorldVec |
( |
in VVizDataSetId |
dataset, |
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in vec3 |
texCoord | |
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) |
| | |
Converts the input vector from the input dataset's texture space to world space.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| texCoord | The 3D texture coordinate vector, assumed to be a position vector. |
- Returns:
- The converted 3D position vector in world space. The intermediate homogeneous (vec4) value is converted to 3D by dividing the X, Y and Z components by W.
vec4 VVizWorldToTexture |
( |
in VVizDataSetId |
dataset, |
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in vec4 |
worldCoord | |
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) |
| | |
Converts the input vector from world space to the input dataset's texture space.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| worldCoord | The world space vector, in homogeneous coordinates. |
- Returns:
- The converted vector in texture space, in homogeneous coordinates.
vec3 VVizWorldToTextureDir |
( |
in VVizDataSetId |
dataset, |
|
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in vec3 |
worldCoord | |
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) |
| | |
Converts the input vector from world space to the input dataset's texture space.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| worldCoord | The 3D world space vector, assumed to be a direction vector. |
- Returns:
- The converted 3D direction vector in the dataset's texture space. The intermediate homogeneous (vec4) value is converted to 3D by ignoring the W component.
vec3 VVizWorldToTextureVec |
( |
in VVizDataSetId |
dataset, |
|
|
in vec3 |
worldCoord | |
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) |
| | |
Converts the input vector from world space to the input dataset's texture space.
- Parameters:
-
| dataset | The dataset to which the texture space belongs. |
| worldCoord | The 3D world space vector, assumed to be a position vector. |
- Returns:
- The converted 3D position vector in the dataset's texture space. The intermediate homogeneous (vec4) value is converted to 3D by dividing the X, Y and Z components by W.