feature: Add primitive version of multiple displays

app/config/config.go

@@ -6,10 +6,10 @@ import _ "embed"
 var InitialConfig []byte
 
 type DisplayConfig struct {
-	Angle   *int `yaml:"angle"`
+	Angle   *int     `yaml:"angle"`
-	FOV     *int `yaml:"fov"`
+	FOV     *int     `yaml:"fov"`
-	Spacing *int `yaml:"spacing"`
+	Spacing *float32 `yaml:"spacing"`
-	Count   *int `yaml:"count"`
+	Count   *int     `yaml:"count"`
 }
 
 type AppOverrides struct {
@@ -28,6 +28,10 @@ func getPtrToInt(int int) *int {
 	return &int
 }
 
+func getPtrToFloat32(float32 float32) *float32 {
+	return &float32
+}
+
 func getPtrToBool(bool bool) *bool {
 	return &bool
 }
@@ -36,7 +40,7 @@ var DefaultConfig = &Config{
 	DisplayConfig: DisplayConfig{
 		Angle:   getPtrToInt(45),
 		FOV:     getPtrToInt(45),
-		Spacing: getPtrToInt(1),
+		Spacing: getPtrToFloat32(0.5),
 		Count:   getPtrToInt(3),
 	},
 	Overrides: AppOverrides{

app/config/default_config.yml

@@ -9,7 +9,7 @@
 display:
   angle: 45 # Angle of the virtual displays
   fov: 45 # FOV of the 3D camera
-  spacing: 1 # Spacing between virtual displays
+  spacing: 0.5 # Spacing between virtual displays
   count: 3 # Count of virtual displays
 overrides:
   allow_unsupported_devices: false # If true, allows unsupported devices to be used as long as they're a compatible vendor (Xreal)

app/main.go

@@ -155,7 +155,13 @@ func mainEntrypoint(context.Context, *cli.Command) error {
 			Y2: displayMetadata.MaxHeight,
 		}
 
-		displayBuffer := openedDevice.CreateBuffer(displayMetadata.MaxWidth, displayMetadata.MaxHeight, libevdi.StridePixelFormatRGBA32, displayRect)
+		displayBuffer, err := openedDevice.CreateBuffer(displayMetadata.MaxWidth, displayMetadata.MaxHeight, libevdi.StridePixelFormatRGBA32, displayRect)
+
+		if err != nil {
+			log.Errorf("Failed to create buffer for display %d: %s", currentDisplay, err.Error())
+			atexit.Exit(1)
+			return nil
+		}
 
 		displayMetadata := &renderer.EvdiDisplayMetadata{
 			EvdiNode: openedDevice,

app/renderer/renderer.go

@@ -17,8 +17,10 @@ import (
 )
 
 type TextureModelPair struct {
-	Texture rl.Texture2D
+	Texture               rl.Texture2D
-	Model   rl.Model
+	Model                 rl.Model
+	CurrentAngle          float32
+	CurrentDisplaySpacing float32
 }
 
 func findMaxVerticalSize(fovyDeg float32, distance float32) float32 {
@@ -125,7 +127,8 @@ func EnterRenderLoop(config *libconfig.Config, displayMetadata *edidtools.Displa
 	rl.DisableBackfaceCulling()
 	rl.DisableDepthTest()
 
-	coreMesh := rl.GenMeshPlane(findOptimalHorizontalRes(float32(displayMetadata.MaxHeight), float32(displayMetadata.MaxWidth), verticalSize), verticalSize, 1, 1)
+	horizontalSize := findOptimalHorizontalRes(float32(displayMetadata.MaxHeight), float32(displayMetadata.MaxWidth), verticalSize)
+	coreMesh := rl.GenMeshPlane(horizontalSize, verticalSize, 1, 1)
 
 	movementVector := rl.Vector3{
 		X: 0.0,
@@ -156,7 +159,18 @@ func EnterRenderLoop(config *libconfig.Config, displayMetadata *edidtools.Displa
 
 	rects := make([]*TextureModelPair, len(evdiCards))
 
+	displayAngle := float32(*config.DisplayConfig.Angle)
+	displaySpacing := *config.DisplayConfig.Spacing + horizontalSize
+
+	highestPossibleAngleOnBothSides := float32((*config.DisplayConfig.Count)-1) * displayAngle
+	highestPossibleDisplaySpacingOnBothSides := float32((*config.DisplayConfig.Count)-1) * displaySpacing
+
 	for i, card := range evdiCards {
+		currentAngle := (-highestPossibleAngleOnBothSides) + (displayAngle * float32(i+1))
+		currentDisplaySpacing := (-highestPossibleDisplaySpacingOnBothSides) + (displaySpacing * float32(i+1))
+
+		log.Debugf("display #%d: currentAngle=%f, currentDisplaySpacing=%f", i, currentAngle, currentDisplaySpacing)
+
 		image := rl.NewImage(card.Buffer.Buffer, int32(displayMetadata.MaxWidth), int32(displayMetadata.MaxHeight), 1, rl.UncompressedR8g8b8a8)
 
 		texture := rl.LoadTextureFromImage(image)
@@ -165,8 +179,10 @@ func EnterRenderLoop(config *libconfig.Config, displayMetadata *edidtools.Displa
 		rl.SetMaterialTexture(model.Materials, rl.MapAlbedo, texture)
 
 		rects[i] = &TextureModelPair{
-			Texture: texture,
+			Texture:               texture,
-			Model:   model,
+			Model:                 model,
+			CurrentAngle:          currentAngle,
+			CurrentDisplaySpacing: currentDisplaySpacing,
 		}
 	}
 
@@ -200,13 +216,13 @@ func EnterRenderLoop(config *libconfig.Config, displayMetadata *edidtools.Displa
 
 			if err != nil {
 				log.Errorf("Failed to wait for display events: %s", err.Error())
-				break
+				continue
 			}
 
 			if ready {
 				if err := card.EvdiNode.HandleEvents(card.EventContext); err != nil {
 					log.Errorf("Failed to handle display events: %s", err.Error())
-					break
+					continue
 				}
 
 				card.EvdiNode.GrabPixels(card.Rect)
@@ -223,7 +239,7 @@ func EnterRenderLoop(config *libconfig.Config, displayMetadata *edidtools.Displa
 			rl.DrawModelEx(
 				rect.Model,
 				rl.Vector3{
-					X: 0,
+					X: rect.CurrentDisplaySpacing,
 					Y: verticalSize / 2,
 					Z: 0,
 				},
@@ -241,8 +257,6 @@ func EnterRenderLoop(config *libconfig.Config, displayMetadata *edidtools.Displa
 				},
 				rl.White,
 			)
-
-			break
 		}
 
 		rl.EndMode3D()

app/renderer/struct.go

@@ -5,8 +5,8 @@ import (
 )
 
 type EvdiDisplayMetadata struct {
-	EvdiNode            *libevdi.EvdiNode
+	EvdiNode     *libevdi.EvdiNode
-	Rect                *libevdi.EvdiDisplayRect
+	Rect         *libevdi.EvdiDisplayRect
-	Buffer              *libevdi.EvdiBuffer
+	Buffer       *libevdi.EvdiBuffer
-	EventContext        *libevdi.EvdiEventContext
+	EventContext *libevdi.EvdiEventContext
 }

go.mod

@@ -4,7 +4,6 @@ go 1.24.3
 
 require (
 	git.terah.dev/UnrealXR/raylib-go/raylib v0.55.2-0.20250623002739-1468af2636e1
-	git.terah.dev/imterah/goevdi v1.14.11-0.20250626004148-bdbef2a68ff9
 	github.com/anoopengineer/edidparser v0.0.0-20240602223913-86ca9ed3d2b0
 	github.com/charmbracelet/log v0.4.2
 	github.com/goccy/go-yaml v1.18.0
@@ -15,6 +14,7 @@ require (
 )
 
 require (
+	git.terah.dev/imterah/goevdi/libevdi v0.1.0-evdi1.14.10 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
 	github.com/charmbracelet/lipgloss v1.1.0 // indirect

go.sum

@@ -2,6 +2,8 @@ git.terah.dev/UnrealXR/raylib-go/raylib v0.55.2-0.20250623002739-1468af2636e1 h1
 git.terah.dev/UnrealXR/raylib-go/raylib v0.55.2-0.20250623002739-1468af2636e1/go.mod h1:ZRirF2UuVWSbl2ux7oyHwXcinni9msejCvtIsXbT8yY=
 git.terah.dev/imterah/goevdi v1.14.11-0.20250626004148-bdbef2a68ff9 h1:TYcPZ62CR3keYf/dE9KyV5X5krh+riDyZ3fnhkeSRyA=
 git.terah.dev/imterah/goevdi v1.14.11-0.20250626004148-bdbef2a68ff9/go.mod h1:4scjAuFakx/2gTRSeCtTNHnj1v9FdF3XiOMmWsz4FDs=
+git.terah.dev/imterah/goevdi/libevdi v0.1.0-evdi1.14.10 h1:M+Wja0b6Ks3mZXMGoBs3KZXsKRRWolUelITLQ/kaIFw=
+git.terah.dev/imterah/goevdi/libevdi v0.1.0-evdi1.14.10/go.mod h1:7zdodqq+tECNHTljD5l7x0PvcGglLCa+mD2eQj0vkEg=
 github.com/anoopengineer/edidparser v0.0.0-20240602223913-86ca9ed3d2b0 h1:rTfysyBCL7LPbq9GFpQbllvKT8vEI93lQUwksMMxHMI=
 github.com/anoopengineer/edidparser v0.0.0-20240602223913-86ca9ed3d2b0/go.mod h1:fEt61NePh3ZMxA+g3iC4CaGzY9lEsHRUkYJY2x0lBAw=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=