Phaser.Renderer.WebGL.Utils
Scope: static
Source: src/renderer/webgl/Utils.js#L9
Since: 3.0.0
Static functions
checkShaderMax
<static> checkShaderMax(gl, maxTextures)
Description:
Check to see how many texture units the GPU supports in a fragment shader
and if the value specific in the game config is allowed.
This value is hard-clamped to 16 for performance reasons on Android devices.
Parameters:
| name | type | optional | description |
|---|---|---|---|
| gl | WebGLRenderingContext | No | The WebGLContext used to create the shaders. |
| maxTextures | number | No | The Game Config maxTextures value. |
Returns: number - The number of texture units that is supported by this browser and GPU.
Source: src/renderer/webgl/Utils.js#L99
Since: 3.50.0
getFloatsFromUintRGB
<static> getFloatsFromUintRGB(rgb)
Description:
Unpacks a Uint24 RGB into an array of floats of ranges of 0.0 and 1.0
Parameters:
| name | type | optional | description |
|---|---|---|---|
| rgb | number | No | RGB packed as a Uint24 |
Returns: array - Array of floats representing each component as a float
Source: src/renderer/webgl/Utils.js#L80
Since: 3.0.0
getTintAppendFloatAlpha
<static> getTintAppendFloatAlpha(rgb, a)
Description:
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 | optional | description |
|---|---|---|---|
| rgb | number | No | Uint24 representing RGB components |
| a | number | No | Float32 representing Alpha component |
Returns: number - Packed RGBA as Uint32
Source: src/renderer/webgl/Utils.js#L38
Since: 3.0.0
getTintAppendFloatAlphaAndSwap
<static> getTintAppendFloatAlphaAndSwap(rgb, a)
Description:
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 | optional | description |
|---|---|---|---|
| rgb | number | No | Uint24 representing RGB components |
| a | number | No | Float32 representing Alpha component |
Returns: number - Packed RGBA as Uint32
Source: src/renderer/webgl/Utils.js#L57
Since: 3.0.0
getTintFromFloats
<static> getTintFromFloats(r, g, b, a)
Description:
Packs four floats on a range from 0.0 to 1.0 into a single Uint32
Parameters:
| name | type | optional | description |
|---|---|---|---|
| r | number | No | Red component in a range from 0.0 to 1.0 |
| g | number | No | Green component in a range from 0.0 to 1.0 |
| b | number | No | Blue component in a range from 0.0 to 1.0 |
| a | number | No | Alpha component in a range from 0.0 to 1.0 |
Returns: number - The packed RGBA values as a Uint32.
Source: src/renderer/webgl/Utils.js#L15
Since: 3.0.0
parseFragmentShaderMaxTextures
<static> parseFragmentShaderMaxTextures(fragmentShaderSource, maxTextures)
Description:
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 | optional | description |
|---|---|---|---|
| fragmentShaderSource | string | No | The Fragment Shader source code to operate on. |
| maxTextures | number | No | The number of maxTextures value. |
Returns: string - The modified Fragment Shader source.
Source: src/renderer/webgl/Utils.js#L131
Since: 3.50.0
setGlowQuality
<static> setGlowQuality(shader, game, [quality], [distance])
Description:
Takes the Glow FX Shader source and parses out the SIZE and DIST
consts with the configuration values.
Parameters:
| name | type | optional | description |
|---|---|---|---|
| shader | string | No | The Fragment Shader source code to operate on. |
| game | Phaser.Game | No | The Phaser Game instance. |
| quality | number | Yes | The quality of the glow (defaults to 0.1) |
| distance | number | Yes | The distance of the glow (defaults to 10) |
Returns: string - The modified Fragment Shader source.
Source: src/renderer/webgl/Utils.js#L174
Since: 3.60.0