Namespace: Utils

Methods

---

<static> checkShaderMax(gl, maxTextures)

Check to see how many texture units the GPU supports, based on the given config value. Then tests this against the maximum number of iterations GLSL can support.

Parameters:

Name	Type	Description
gl	WebGLRenderingContext	The WebGLContext used to create the shaders.
maxTextures	number	The Game Config maxTextures value.

Since: 3.50.0

Source: src/renderer/webgl/Utils.js (Line 126)

Returns:

The number of texture units that is supported by this browser and GPU.

Type

number

---

<static> getFloatsFromUintRGB(rgb)

Unpacks a Uint24 RGB into an array of floats of ranges of 0.0 and 1.0

Parameters:

Name	Type	Description
rgb	number	RGB packed as a Uint24

Since: 3.0.0

Source: src/renderer/webgl/Utils.js (Line 107)

Returns:

Array of floats representing each component as a float

Type

array

---

<static> getTintAppendFloatAlpha(rgb, a)

Packs a Uint24, representing RGB components, with a Float32, representing the alpha component, with a range between 0.0 and 1.0 and return a Uint32

Parameters:

Name	Type	Description
rgb	number	Uint24 representing RGB components
a	number	Float32 representing Alpha component

Since: 3.0.0

Source: src/renderer/webgl/Utils.js (Line 65)

Returns:

Packed RGBA as Uint32

Type

number

---

<static> getTintAppendFloatAlphaAndSwap(rgb, a)

Packs a Uint24, representing RGB components, with a Float32, representing the alpha component, with a range between 0.0 and 1.0 and return a swizzled Uint32

Parameters:

Name	Type	Description
rgb	number	Uint24 representing RGB components
a	number	Float32 representing Alpha component

Since: 3.0.0

Source: src/renderer/webgl/Utils.js (Line 84)

Returns:

Packed RGBA as Uint32

Type

number

---

<static> getTintFromFloats(r, g, b, a)

Packs four floats on a range from 0.0 to 1.0 into a single Uint32

Parameters:

Name	Type	Description
r	number	Red component in a range from 0.0 to 1.0
g	number	Green component in a range from 0.0 to 1.0
b	number	Blue component in a range from 0.0 to 1.0
a	number	Alpha component in a range from 0.0 to 1.0

Since: 3.0.0

Source: src/renderer/webgl/Utils.js (Line 42)

Returns:

The packed RGBA values as a Uint32.

Type

number

---

<static> parseFragmentShaderMaxTextures(fragmentShaderSource, maxTextures)

Checks the given Fragment Shader Source for %count% and %forloop% declarations and replaces those with GLSL code for setting texture = texture2D(uMainSampler[i], outTexCoord).

Parameters:

Name	Type	Description
fragmentShaderSource	string	The Fragment Shader source code to operate on.
maxTextures	number	The number of maxTextures value.

Since: 3.50.0

Source: src/renderer/webgl/Utils.js (Line 178)

Returns:

The modified Fragment Shader source.

Type

string