ShaderProgramBuilder QML Type
Generates a Shader Program content from loaded graphs. More...
| Import Statement: | import Qt3D.Render 2.7 |
| Instantiates: | QShaderProgramBuilder |
Properties
- computeShaderCode : string
- enabledLayers : stringlist
- fragmentShaderCode : string
- geometryShaderCode : string
- shaderProgram : string
- tessellationControlShaderCode : string
- tessellationEvaluationShaderCode : string
- vertexShaderCode : string
Detailed Description
A shader program builder consists of several different shader graphs used to generate shader code.
A cache of generated shader code is maintained. Generated shaders are by defaults saved in QStandardPaths::writableLocation(QStandardPaths::TempLocation)). This path can be overridden by setting environment variable QT3D_WRITABLE_CACHE_PATH to a valid writable path.
The use of the cache can be disabled by setting environment variable QT3D_DISABLE_SHADER_CACHE.
In most cases, changes made to a graph are detected by Qt 3D and a new cache entry will be generated. One case were this will not happen is when code snippets included by a graphs are changed. To work around that, clearing the cache directory or setting environment variable QT3D_REBUILD_SHADER_CACHE can be used to force shader code to be generated again.
Property Documentation
computeShaderCode : string |
Holds the generated compute shader code
enabledLayers : stringlist |
Holds the list of layers this builder will activate on the shader graphs during code generation.
fragmentShaderCode : string |
Holds the generated fragment shader code
geometryShaderCode : string |
Holds the generated geometry shader code
shaderProgram : string |
Holds the shader program on which this builder generates code.
tessellationControlShaderCode : string |
Holds the generated tessellation control shader code
tessellationEvaluationShaderCode : string |
Holds the generated tessellation evaluation shader code
vertexShaderCode : string |
Holds the generated vertex shader code