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Lighting Functions

Methods

calculateSpecular(sampler2D specularMap, vec2 uv)​

Calculates a new specular based on the specular map.

Returns: Specular Multiplier

Return Type: vec3

calculateSpecular(sampler2D spcularMap)​

Same as calculateSpecular but uses the UVs passed in from vertex shader.

Returns: Specular Multiplier

Return Type: vec3

calculateLight(Light light, vec3 n, vec3 spec, Material material)​

Calculates basic lighting for a single light. This is used for diffuse and specular lighting.

Returns: Lighting

Return Type: vec4

calculateLight(Light light, vec3 n, vec3 spec)​

Same as calculateLight but uses a default material. The default material is: Material(10.0f, 1.0f)

Returns: Lighting

Return Type: vec4

calculateLight(Light light, Material mat)​

Same as calculateLight but uses a the normal passed from the vertex shader.

Returns: Lighting

Return Type: vec4

calculateLight(Light light, vec3 n)​

Same as calculateLight but uses a default material and no specular multiplier. The default material is: Material(10.0f, 1.0f)

Returns: Lighting

Return Type: vec4

calculateLight(Light light, vec3 n, Material material)​

Same as calculateLight but uses no specular multiplier.

correctGamma(vec4 col, float gamma)​

Corrects the gamma of a color. After the final color has been calculated, this is used to correct the gamma of the final color.

Returns: Corrected Color

Return Type: vec4

applyHDR(vec4 col, float exposure)​

Change the exposure of the final color. Commonly used with correctGamma

Returns: Adjusted Color

Return Type: vec4

emission(float intensity, float threshold)​

Allows colors from the texture to bleed into eachother and give a bloom like effect. This effect does not stretch outside of the rendered object so other objects will not be affected.

Returns: Adjusted Color

Return Type: vec4

calculateSceneLighting()​

Loops through all lights in scene and calculates the lighting for each.

Returns: Lighting

Return Type: vec4

calculateSceneLighting(Material material)​

Same as calculateSceneLighting but uses a custom material passed in.

Returns: Lighting

Return Type: vec4

createDirectionalLight()​

Creates a basic default directional light.

Returns: New Light

Return Type: Light

createPointLight()​

Creates a basic default point light.

Returns: New Light

Return Type: Light