package uniform

import (
	"fmt"
	"unsafe"
	"zworld/engine/renderapi/color"
	"zworld/plugins/math/mat4"
	"zworld/plugins/math/vec4"
)

type Light struct {
	ViewProj  [4]mat4.T
	Shadowmap [4]uint32
	Distance  [4]float32
	Color     color.T
	Position  vec4.T
	Type      uint32
	Intensity float32
	Range     float32
	Falloff   float32
	_padding  float32
}

type LightSettings struct {
	AmbientColor       color.T
	AmbientIntensity   float32
	Count              int32
	ShadowSamples      int32
	ShadowSampleRadius float32
	ShadowBias         float32
	NormalOffset       float32
	_padding           [75]float32
}

func init() {
	lightSz := unsafe.Sizeof(Light{})
	settingSz := unsafe.Sizeof(LightSettings{})
	if lightSz != settingSz {
		panic(fmt.Sprintf("Light (%d) and LightSetting (%d) must have equal size", lightSz, settingSz))
	}
}