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Multiple point lights

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This commit is contained in:
bloeys
2024-04-12 08:38:03 +04:00
parent 3c0f82a735
commit c00f6d97dd
3 changed files with 325 additions and 58 deletions
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273
main.go
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@ -3,6 +3,7 @@ package main
import (
"fmt"
"runtime"
"strconv"
imgui "github.com/AllenDang/cimgui-go"
"github.com/bloeys/gglm/gglm"
@ -41,6 +42,33 @@ import (
- Material system editor with fields automatically extracted from the shader
*/
type DirLight struct {
Dir gglm.Vec3
DiffuseColor gglm.Vec3
SpecularColor gglm.Vec3
}
// Check https://wiki.ogre3d.org/tiki-index.php?page=-Point+Light+Attenuation for values
type PointLight struct {
Pos gglm.Vec3
DiffuseColor gglm.Vec3
SpecularColor gglm.Vec3
Radius float32
Constant float32
Linear float32
Quadratic float32
}
type SpotLight struct {
Dir gglm.Vec3
DiffuseColor gglm.Vec3
SpecularColor gglm.Vec3
InnerCutoff float32
OuterCutoff float32
}
const (
camSpeed = 15
mouseSensitivity = 0.5
@ -53,7 +81,7 @@ var (
window *engine.Window
pitch float32 = 0
yaw float32 = 0
yaw float32 = -1.5
cam *camera.Camera
whiteMat *materials.Material
@ -69,6 +97,7 @@ var (
cubeModelMat = gglm.NewTrMatId()
drawSkybox = true
debugDrawDepthBuffer bool
skyboxCmap assets.Cubemap
@ -76,14 +105,52 @@ var (
dpiScaling float32
// Light settings
ambientColor = gglm.NewVec3(0.2, 0.2, 0.2)
ambientColor = gglm.NewVec3(0, 0, 0)
// Lights
lightPos1 = gglm.NewVec3(-2, 10, 0)
lightColor1 = gglm.NewVec3(1, 1, 1)
dirLight = DirLight{
Dir: *gglm.NewVec3(0, -0.8, 0.2).Normalize(),
DiffuseColor: *gglm.NewVec3(0, 0, 0),
SpecularColor: *gglm.NewVec3(0, 0, 0),
}
pointLights = [...]PointLight{
{
Pos: *gglm.NewVec3(0, 5, 0),
DiffuseColor: *gglm.NewVec3(1, 0, 0),
SpecularColor: *gglm.NewVec3(1, 1, 1),
// These values are for 50m range
Constant: 1.0,
Linear: 0.09,
Quadratic: 0.032,
},
{
Pos: *gglm.NewVec3(0, -5, 0),
DiffuseColor: *gglm.NewVec3(0, 1, 0),
SpecularColor: *gglm.NewVec3(1, 1, 1),
Constant: 1.0,
Linear: 0.09,
Quadratic: 0.032,
},
{
Pos: *gglm.NewVec3(5, 0, 0),
DiffuseColor: *gglm.NewVec3(1, 1, 1),
SpecularColor: *gglm.NewVec3(1, 1, 1),
Constant: 1.0,
Linear: 0.09,
Quadratic: 0.032,
},
{
Pos: *gglm.NewVec3(-4, 0, 0),
DiffuseColor: *gglm.NewVec3(0, 0, 1),
SpecularColor: *gglm.NewVec3(1, 1, 1),
Constant: 1.0,
Linear: 0.09,
Quadratic: 0.032,
},
}
)
type OurGame struct {
type Game struct {
Win *engine.Window
ImGUIInfo nmageimgui.ImguiInfo
}
@ -160,7 +227,7 @@ func main() {
engine.SetVSync(false)
engine.SetSrgbFramebuffer(true)
game := &OurGame{
game := &Game{
Win: window,
ImGUIInfo: nmageimgui.NewImGui("./res/shaders/imgui.glsl"),
}
@ -169,7 +236,7 @@ func main() {
engine.Run(game, window, game.ImGUIInfo)
}
func (g *OurGame) handleWindowEvents(e sdl.Event) {
func (g *Game) handleWindowEvents(e sdl.Event) {
switch e := e.(type) {
case *sdl.WindowEvent:
@ -220,7 +287,7 @@ func getDpiScaling(unscaledWindowWidth, unscaledWindowHeight int32) float32 {
return dpiScaling
}
func (g *OurGame) Init() {
func (g *Game) Init() {
var err error
@ -262,6 +329,11 @@ func (g *OurGame) Init() {
logging.ErrLog.Fatalln("Failed to load texture. Err: ", err)
}
blackTex, err := assets.LoadTexturePNG("./res/textures/black.png", &assets.TextureLoadOptions{TextureIsSrgba: true})
if err != nil {
logging.ErrLog.Fatalln("Failed to load texture. Err: ", err)
}
containerDiffuseTex, err := assets.LoadTexturePNG("./res/textures/container-diffuse.png", &assets.TextureLoadOptions{TextureIsSrgba: true})
if err != nil {
logging.ErrLog.Fatalln("Failed to load texture. Err: ", err)
@ -287,34 +359,56 @@ func (g *OurGame) Init() {
logging.ErrLog.Fatalln("Failed to load cubemap. Err: ", err)
}
// Create materials
// Create materials and assign any unused texture slots to black
whiteMat = materials.NewMaterial("White mat", "./res/shaders/simple.glsl")
whiteMat.Shininess = 128
whiteMat.Shininess = 64
whiteMat.DiffuseTex = whiteTex.TexID
whiteMat.SpecularTex = blackTex.TexID
whiteMat.NormalTex = blackTex.TexID
whiteMat.EmissionTex = blackTex.TexID
whiteMat.SetUnifInt32("material.diffuse", 0)
whiteMat.SetUnifInt32("material.specular", 1)
// whiteMat.SetUnifInt32("material.normal", 2)
whiteMat.SetUnifInt32("material.emission", 3)
whiteMat.SetUnifMat4("projMat", &cam.ProjMat)
whiteMat.SetUnifVec3("ambientColor", ambientColor)
whiteMat.SetUnifFloat32("material.shininess", whiteMat.Shininess)
whiteMat.SetUnifVec3("lightPos1", lightPos1)
whiteMat.SetUnifVec3("lightColor1", lightColor1)
whiteMat.SetUnifVec3("dirLight.dir", &dirLight.Dir)
whiteMat.SetUnifVec3("dirLight.diffuseColor", &dirLight.DiffuseColor)
whiteMat.SetUnifVec3("dirLight.specularColor", &dirLight.SpecularColor)
containerMat = materials.NewMaterial("Container mat", "./res/shaders/simple.glsl")
containerMat.Shininess = 128
containerMat.Shininess = 64
containerMat.DiffuseTex = containerDiffuseTex.TexID
containerMat.SpecularTex = containerSpecularTex.TexID
containerMat.NormalTex = blackTex.TexID
containerMat.EmissionTex = blackTex.TexID
containerMat.SetUnifInt32("material.diffuse", 0)
containerMat.SetUnifInt32("material.specular", 1)
// containerMat.SetUnifInt32("material.normal", 2)
containerMat.SetUnifInt32("material.emission", 3)
containerMat.SetUnifMat4("projMat", &cam.ProjMat)
containerMat.SetUnifVec3("ambientColor", ambientColor)
containerMat.SetUnifFloat32("material.shininess", containerMat.Shininess)
containerMat.SetUnifVec3("lightPos1", lightPos1)
containerMat.SetUnifVec3("lightColor1", lightColor1)
containerMat.SetUnifVec3("dirLight.dir", &dirLight.Dir)
containerMat.SetUnifVec3("dirLight.diffuseColor", &dirLight.DiffuseColor)
containerMat.SetUnifVec3("dirLight.specularColor", &dirLight.SpecularColor)
palleteMat = materials.NewMaterial("Pallete mat", "./res/shaders/simple.glsl")
palleteMat.Shininess = 128
palleteMat.Shininess = 64
palleteMat.DiffuseTex = palleteTex.TexID
palleteMat.SpecularTex = blackTex.TexID
palleteMat.NormalTex = blackTex.TexID
palleteMat.EmissionTex = blackTex.TexID
palleteMat.SetUnifInt32("material.diffuse", 0)
palleteMat.SetUnifInt32("material.specular", 1)
// palleteMat.SetUnifInt32("material.normal", 2)
palleteMat.SetUnifInt32("material.emission", 3)
palleteMat.SetUnifMat4("projMat", &cam.ProjMat)
palleteMat.SetUnifVec3("ambientColor", ambientColor)
palleteMat.SetUnifFloat32("material.shininess", palleteMat.Shininess)
palleteMat.SetUnifVec3("lightPos1", lightPos1)
palleteMat.SetUnifVec3("lightColor1", lightColor1)
palleteMat.SetUnifVec3("dirLight.diffuseColor", &dirLight.DiffuseColor)
palleteMat.SetUnifVec3("dirLight.specularColor", &dirLight.SpecularColor)
debugDepthMat = materials.NewMaterial("Debug depth mat", "./res/shaders/debug-depth.glsl")
debugDepthMat.SetUnifMat4("projMat", &cam.ProjMat)
@ -327,10 +421,44 @@ func (g *OurGame) Init() {
rotMat := gglm.NewRotMat(gglm.NewQuatEuler(gglm.NewVec3(-90, -90, 0).AsRad()))
cubeModelMat.Mul(translationMat.Mul(rotMat.Mul(scaleMat)))
g.updateLights()
updateViewMat()
}
func (g *OurGame) Update() {
func (g *Game) updateLights() {
for i := 0; i < len(pointLights); i++ {
pl := &pointLights[i]
indexString := "pointLights[" + strconv.Itoa(i) + "]"
whiteMat.SetUnifVec3(indexString+".pos", &pl.Pos)
containerMat.SetUnifVec3(indexString+".pos", &pl.Pos)
palleteMat.SetUnifVec3(indexString+".pos", &pl.Pos)
whiteMat.SetUnifVec3(indexString+".diffuseColor", &pl.DiffuseColor)
containerMat.SetUnifVec3(indexString+".diffuseColor", &pl.DiffuseColor)
palleteMat.SetUnifVec3(indexString+".diffuseColor", &pl.DiffuseColor)
whiteMat.SetUnifVec3(indexString+".specularColor", &pl.SpecularColor)
containerMat.SetUnifVec3(indexString+".specularColor", &pl.SpecularColor)
palleteMat.SetUnifVec3(indexString+".specularColor", &pl.SpecularColor)
whiteMat.SetUnifFloat32(indexString+".constant", pl.Constant)
containerMat.SetUnifFloat32(indexString+".constant", pl.Constant)
palleteMat.SetUnifFloat32(indexString+".constant", pl.Constant)
whiteMat.SetUnifFloat32(indexString+".linear", pl.Linear)
containerMat.SetUnifFloat32(indexString+".linear", pl.Linear)
palleteMat.SetUnifFloat32(indexString+".linear", pl.Linear)
whiteMat.SetUnifFloat32(indexString+".quadratic", pl.Quadratic)
containerMat.SetUnifFloat32(indexString+".quadratic", pl.Quadratic)
palleteMat.SetUnifFloat32(indexString+".quadratic", pl.Quadratic)
}
}
func (g *Game) Update() {
if input.IsQuitClicked() || input.KeyClicked(sdl.K_ESCAPE) {
engine.Quit()
@ -353,13 +481,14 @@ func (g *OurGame) Update() {
g.Win.SDLWin.SetTitle(fmt.Sprint("nMage (", timing.GetAvgFPS(), " fps)"))
}
func (g *OurGame) showDebugWindow() {
func (g *Game) showDebugWindow() {
imgui.ShowDemoWindow()
imgui.Begin("Debug controls")
// Camera
imgui.Text("Camera")
if imgui.DragFloat3("Cam Pos", &cam.Pos.Data) {
updateViewMat()
}
@ -369,7 +498,9 @@ func (g *OurGame) showDebugWindow() {
imgui.Spacing()
// Light settings
// Ambient light
imgui.Text("Ambient Light")
if imgui.DragFloat3("Ambient Color", &ambientColor.Data) {
whiteMat.SetUnifVec3("ambientColor", ambientColor)
containerMat.SetUnifVec3("ambientColor", ambientColor)
@ -378,6 +509,9 @@ func (g *OurGame) showDebugWindow() {
imgui.Spacing()
// Specular
imgui.Text("Specular Settings")
if imgui.DragFloat("Specular Shininess", &whiteMat.Shininess) {
whiteMat.SetUnifFloat32("material.shininess", whiteMat.Shininess)
containerMat.SetUnifFloat32("material.shininess", whiteMat.Shininess)
@ -386,28 +520,77 @@ func (g *OurGame) showDebugWindow() {
imgui.Spacing()
// Lights
if imgui.DragFloat3("Light Pos 1", &lightPos1.Data) {
whiteMat.SetUnifVec3("lightPos1", lightPos1)
containerMat.SetUnifVec3("lightPos1", lightPos1)
palleteMat.SetUnifVec3("lightPos1", lightPos1)
// Directional light
imgui.Text("Directional Light")
if imgui.DragFloat3("Direction", &dirLight.Dir.Data) {
whiteMat.SetUnifVec3("dirLight.dir", &dirLight.Dir)
containerMat.SetUnifVec3("dirLight.dir", &dirLight.Dir)
palleteMat.SetUnifVec3("dirLight.dir", &dirLight.Dir)
}
if imgui.DragFloat3("Light Color 1", &lightColor1.Data) {
whiteMat.SetUnifVec3("lightColor1", lightColor1)
containerMat.SetUnifVec3("lightColor1", lightColor1)
palleteMat.SetUnifVec3("lightColor1", lightColor1)
if imgui.DragFloat3("Diffuse Color", &dirLight.DiffuseColor.Data) {
whiteMat.SetUnifVec3("dirLight.diffuseColor", &dirLight.DiffuseColor)
containerMat.SetUnifVec3("dirLight.diffuseColor", &dirLight.DiffuseColor)
palleteMat.SetUnifVec3("dirLight.diffuseColor", &dirLight.DiffuseColor)
}
if imgui.DragFloat3("Specular Color", &dirLight.SpecularColor.Data) {
whiteMat.SetUnifVec3("dirLight.specularColor", &dirLight.SpecularColor)
containerMat.SetUnifVec3("dirLight.specularColor", &dirLight.SpecularColor)
palleteMat.SetUnifVec3("dirLight.specularColor", &dirLight.SpecularColor)
}
imgui.Spacing()
// Point lights
imgui.Text("Point Lights")
if imgui.BeginListBoxV("", imgui.Vec2{Y: 200}) {
for i := 0; i < len(pointLights); i++ {
pl := &pointLights[i]
indexString := strconv.Itoa(i)
if !imgui.TreeNodeExStrV("Light "+indexString, imgui.TreeNodeFlagsSpanAvailWidth) {
continue
}
if imgui.DragFloat3("Pos", &pl.Pos.Data) {
whiteMat.SetUnifVec3("pointLights["+indexString+"].pos", &pl.Pos)
containerMat.SetUnifVec3("pointLights["+indexString+"].pos", &pl.Pos)
palleteMat.SetUnifVec3("pointLights["+indexString+"].pos", &pl.Pos)
}
if imgui.DragFloat3("Diffuse Color", &pl.DiffuseColor.Data) {
whiteMat.SetUnifVec3("pointLights["+indexString+"].diffuseColor", &pl.DiffuseColor)
containerMat.SetUnifVec3("pointLights["+indexString+"].diffuseColor", &pl.DiffuseColor)
palleteMat.SetUnifVec3("pointLights["+indexString+"].diffuseColor", &pl.DiffuseColor)
}
if imgui.DragFloat3("Specular Color", &pl.SpecularColor.Data) {
whiteMat.SetUnifVec3("pointLights["+indexString+"].specularColor", &pl.SpecularColor)
containerMat.SetUnifVec3("pointLights["+indexString+"].specularColor", &pl.SpecularColor)
palleteMat.SetUnifVec3("pointLights["+indexString+"].specularColor", &pl.SpecularColor)
}
imgui.TreePop()
}
imgui.EndListBox()
}
// Other
imgui.Text("Other Settings")
imgui.Checkbox("Draw Skybox", &drawSkybox)
imgui.Checkbox("Debug depth buffer", &debugDrawDepthBuffer)
imgui.End()
}
func (g *OurGame) updateCameraLookAround() {
func (g *Game) updateCameraLookAround() {
mouseX, mouseY := input.GetMouseMotion()
if (mouseX == 0 && mouseY == 0) || !input.MouseDown(sdl.BUTTON_RIGHT) {
@ -433,7 +616,7 @@ func (g *OurGame) updateCameraLookAround() {
updateViewMat()
}
func (g *OurGame) updateCameraPos() {
func (g *Game) updateCameraPos() {
update := false
@ -465,7 +648,7 @@ func (g *OurGame) updateCameraPos() {
}
}
func (g *OurGame) Render() {
func (g *Game) Render() {
tempModelMatrix := cubeModelMat.Clone()
@ -482,12 +665,22 @@ func (g *OurGame) Render() {
cubeMat = debugDepthMat
}
// Draw sun
window.Rend.Draw(sphereMesh, gglm.NewTrMatId().Translate(lightPos1).Scale(gglm.NewVec3(0.1, 0.1, 0.1)), sunMat)
// Draw dir light
window.Rend.Draw(sphereMesh, gglm.NewTrMatId().Translate(gglm.NewVec3(0, 10, 0)).Scale(gglm.NewVec3(0.1, 0.1, 0.1)), sunMat)
// Draw point lights
for i := 0; i < len(pointLights); i++ {
pl := &pointLights[i]
window.Rend.Draw(cubeMesh, gglm.NewTrMatId().Translate(&pl.Pos).Scale(gglm.NewVec3(0.1, 0.1, 0.1)), sunMat)
}
// Chair
window.Rend.Draw(chairMesh, tempModelMatrix, chairMat)
// Ground
window.Rend.Draw(cubeMesh, gglm.NewTrMatId().Translate(gglm.NewVec3(0, -3, 0)).Scale(gglm.NewVec3(20, 1, 20)), cubeMat)
// Cubes
rowSize := 1
for y := 0; y < rowSize; y++ {
@ -498,10 +691,12 @@ func (g *OurGame) Render() {
tempModelMatrix.Translate(gglm.NewVec3(float32(rowSize), -1, 0))
}
g.DrawSkybox()
if drawSkybox {
g.DrawSkybox()
}
}
func (g *OurGame) DrawSkybox() {
func (g *Game) DrawSkybox() {
gl.Disable(gl.CULL_FACE)
gl.DepthFunc(gl.LEQUAL)
@ -529,10 +724,10 @@ func (g *OurGame) DrawSkybox() {
gl.Enable(gl.CULL_FACE)
}
func (g *OurGame) FrameEnd() {
func (g *Game) FrameEnd() {
}
func (g *OurGame) DeInit() {
func (g *Game) DeInit() {
g.Win.Destroy()
}