opengl/shaders provides all methods to deal with openGL shaders. The file only contains 2 classes:

• ShaderFiles
• ShaderRepository

Class ShaderFiles

This class is derived from QOpenGLShaderProgram and is the class to store 3 connected shaders

Variables

These variables are all preset by __init__.

name	description
uniforms	Dictionary of shader uniform values, all preset by -1 (so no position in shader).
env	reference to environment object.
name	The name of the shader.
frag_id	ID of the fragment shader (preset: None).
vert_id	ID of the vertex shader (preset: None).
geom_id	ID of the geometry shader (preset: None).
path	The path of the shader (without suffix .frag, .vert and .geom.

Methods:

name	parameters	returns	description
loadFragShader	None	success boolean	Adds fragment shader path.frag and the shader ID to frag_id. Returns True on success.
loadVertShader	None	success boolean	Adds fragment shader path.vert and the shader ID to vert_id. Returns True on success.
loadGeomShader	None	success boolean	Adds geometry shader path.geom and the shader ID to geom_id. Returns True on success.
loadAllShaderTypes	None	success boolean	Adds at least fragment and vertex shader, but also geometry shader path.geom is existent. Returns True on success.

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Class ShaderRepository

Handles all shaders.

Variables

These variables are all preset by __init__.

name	description
glob	reference to global object.
env	reference to environment object.
_shaders	List of all shaders.
_shadernames	shader dictionary referencing _shaders by name.
prefix	special index for Apple (v12_) or empty.

Methods:

name	parameters	returns	description
getShader	name	shader object	returns shader object by name.
loadshader	filename	shader	loads or reuses a shader given by pathname and returns shader number.
loadShaders	filenames	None	loads a list of shaders and sets attributes and uniform values.
attribVertShader	num	None	set attributes of vertex shader (aPosition, aNormal, aTexCoords) to location 0 to 2 and links and binds shader.
bindShader	shader number	None	bind the shader.
getUniforms	shader number	None	set shader uniforms array of ShaderFiles class to the shader uniform location evaluated.
setShaderUniform	shader reference name var	None	set shader uniforms value of a certain name to a specific value.
setShaderArrayStruct	shader name index member var	None	Get the location of "name[index],member". If not -1 set value to var (float must be handled different).