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96 lines
2.4 KiB
Java
96 lines
2.4 KiB
Java
package electrosphere.renderer.buffer;
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import electrosphere.renderer.buffer.HomogenousUniformBuffer.HomogenousBufferTypes;
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/**
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* Represents an attribute of a shader.
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* When working with shader attributes, almost all data types are 1-1 where one vec4 can be stored in 1 attribute.
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* This is not the case for matrix attributes. In the interest of having a single, central location that related to a shader attribute,
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* This class stores either a single index or a list of indices based on the data type of the attribute that is being worked with.
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*/
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public class ShaderAttribute {
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//for single data types that map 1-1 with attributes (float, vec3, vec4, etc)
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int attributeIndex = -1;
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//for multi-attribute index types (mat4f, mat4d, etc)
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int[] attributeIndices;
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/**
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* The name of the attribute
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*/
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String name;
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/**
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* The type of the attribute
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*/
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HomogenousBufferTypes type;
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/**
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* Constructor for 1-1 attribute
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* @param attributeIndex The attribute index
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*/
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public ShaderAttribute(int attributeIndex){
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this.attributeIndex = attributeIndex;
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}
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/**
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* Constructor for many-1 attribute
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* @param attributeIndices The attribute indices
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*/
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public ShaderAttribute(int[] attributeIndices){
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this.attributeIndices = attributeIndices;
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}
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/**
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* Constructor for 1-1 attribute
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* @param name The name of the attribute
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* @param type The type of attribute
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*/
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public ShaderAttribute(String name, HomogenousBufferTypes type){
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this.name = name;
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this.type = type;
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}
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/**
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* Checks if the attribute is a 1-1 relation
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* @return True if 1-1, false otherwise
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*/
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public boolean isSingleIndex(){
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return attributeIndex > -1;
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}
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/**
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* Returns the index of this attribute
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* @return The index
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*/
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public int getIndex(){
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return attributeIndex;
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}
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/**
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* Returns the array of indices for this attribute
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* @return The array of indices
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*/
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public int[] getIndices(){
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return attributeIndices;
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}
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/**
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* Gets the type of the attribute
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* @return The type
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*/
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public HomogenousBufferTypes getType(){
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return type;
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}
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/**
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* Gets the name of the attribute
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* @return The name
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*/
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public String getName(){
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return name;
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}
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}
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