Shader:setConstant

Available since: Gideros 2015.06.30
Class: Shader

Description

Changes the value of a uniform from Lua code.

Shader:setConstant(uniformName,dataType,mult,data)

Parameters

uniformName: (string) the uniform name to change
dataType: (int) the type of data to set (one of the Shader.Cxxx constants)
mult: (number) number of elements of the given type to set
data: (varies) and the actual data to set, either as a table or as multiple arguments

Example

-- loop
local timer = 0
stage:addEventListener(Event.ENTER_FRAME, function(e)
	timer += 0.018
	shaderwave:setConstant("time", Shader.CFLOAT, 1, timer)
	bitmap:setX(bitmap:getX() + 1)
	if bitmap:getX() > 400 then bitmap:setX(-80) end
end)

---

• Shader

• Shader.getEngineVersion
• Shader.getProperties
• Shader.getShaderLanguage
• Shader.lua
• Shader.new

• Shader:isValid
• Shader:setConstant

• Shader Constants
• Shader Flags
• Shader Uniform Descriptors
• Shader Attribute Descriptors

---

---

• Main Page
• Lua API
• Main API
• Plugins