broken fpscontrols

assets/shader/screen/screen.fs

@@ -39,13 +39,17 @@ vec3 normal;
 vec3 material; // specular, roughness, metalic
 vec3 position;
 
+float specular;
+float roughness;
+float metalic;
+
 vec3 calc_light(light_t light) {
   vec3 light_dir = normalize(light.position - position);
   vec3 view_dir = normalize(view_pos - position);
   vec3 reflect_dir = reflect(-light_dir, normal);
 
   float diffuse = max(dot(normal, light_dir), 0.0);
-  float specular = pow(max(dot(view_dir, reflect_dir), 0.0), 1 - material.y) * material.x;
+  float specular = pow(max(dot(view_dir, reflect_dir), 0.0), 1 - roughness) * specular;
 
   return (diffuse + specular) * light.intensity * light.color / max(pow(length(light.position - position), 2), 1);
 }
@@ -53,8 +57,13 @@ vec3 calc_light(light_t light) {
 void main() {
   albedo = texture(s_albedo, tex).rgb;
   depth = texture(s_depth, tex).x;
-  normal = (texture(s_normal, tex).rgb * 2) - 1;
+  normal = (texture(s_normal, tex).rgb * 0.5) + 0.5;  
   material = texture(s_material, tex).xyz;
+  {
+    specular = material.x;
+    roughness = material.y;
+    metalic = material.z;
+  }
   position = texture(s_position, tex).xyz;
 
   vec3 light_result;

main.go

@@ -10,6 +10,7 @@ import (
 	"git.tek.govt.hu/dowerx/opengl-deferred/types/light"
 	"git.tek.govt.hu/dowerx/opengl-deferred/types/shader"
 	"git.tek.govt.hu/dowerx/opengl-deferred/types/texture"
+	"git.tek.govt.hu/dowerx/opengl-deferred/utils/fpscontrols"
 	"github.com/go-gl/gl/v4.6-core/gl"
 	"github.com/go-gl/glfw/v3.3/glfw"
 	"github.com/go-gl/mathgl/mgl32"
@@ -88,7 +89,7 @@ func main() {
 	defer screenShader.Delete()
 
 	// geometry
-	cube, err := geometry.LoadOBJ("assets/geometries/cube.obj")
+	cube, err := geometry.LoadOBJ("assets/geometries/suzanne.obj")
 	if err != nil {
 		panic(err)
 	}
@@ -133,7 +134,8 @@ func main() {
 
 	// lights
 	lights := []light.Light{
-		{Color: [3]float32{1, 1, 1}, Position: mgl32.Vec3{3, 3, 3}, Intensity: 10, Type: light.POINT},
+		{Color: [3]float32{0, 1, 0}, Position: mgl32.Vec3{3, 3, 3}, Intensity: 3, Type: light.POINT},
+		{Color: [3]float32{1, 0, 1}, Position: mgl32.Vec3{3, 3, -3}, Intensity: 15, Type: light.POINT},
 	}
 
 	// gbuffer
@@ -145,20 +147,13 @@ func main() {
 	gbuff.Bind()
 
 	// transformations
-	projection := mgl32.Perspective(mgl32.DegToRad(FOV), float32(WIDTH)/HEIGHT, 0.1, 10)
-	viewPositon := mgl32.Vec3{3, 3, 3}
-	view := mgl32.LookAtV(viewPositon, mgl32.Vec3{0, 0, 0}, mgl32.Vec3{0, 1, 0})
+	projection := mgl32.Perspective(mgl32.DegToRad(FOV), float32(WIDTH)/HEIGHT, 0.1, 1000)
+	model := mgl32.Ident4()
+	controls := fpscontrols.New(1, 0.1, mgl32.Vec3{0, 0, -10}, 0, 0, window)
 
-	angle := 0.0
-	previousTime := glfw.GetTime()
 	for !window.ShouldClose() {
-		// rotate
-		time := glfw.GetTime()
-		elapsed := time - previousTime
-		previousTime = time
-
-		angle += elapsed
-		model := mgl32.HomogRotate3D(float32(angle), mgl32.Vec3{0, 1, 0})
+		glfw.PollEvents()
+		controls.Update()
 
 		// first pass
 		// bind textures
@@ -177,7 +172,7 @@ func main() {
 		// transfer uniforms
 		deferredShader.Use()
 		deferredShader.Mat4("projection", projection)
-		deferredShader.Mat4("view", view)
+		deferredShader.Mat4("view", controls.ViewMatrix())
 		deferredShader.Mat4("model", model)
 
 		deferredShader.Int("s_albedo", 0)
@@ -200,7 +195,8 @@ func main() {
 		screenShader.Int("s_normal", 2)
 		screenShader.Int("s_material", 3)
 		screenShader.Int("s_position", 4)
-		screenShader.Vec3("view_pos", &viewPositon[0])
+		pos := controls.Position()
+		screenShader.Vec3("view_pos", &pos[0])
 
 		for _, light := range lights {
 			screenShader.Light(&light)
@@ -209,7 +205,6 @@ func main() {
 		screen.Draw()
 
 		window.SwapBuffers()
-		glfw.PollEvents()
 	}
 
 	defer fmt.Println("exiting...")

utils/fpscontrols/fpscontrols.go

@@ -0,0 +1,77 @@
+package fpscontrols
+
+import (
+	"github.com/go-gl/glfw/v3.3/glfw"
+	"github.com/go-gl/mathgl/mgl32"
+)
+
+type FPSControls struct {
+	lookSpeed float32
+	moveSpeed float32
+
+	position mgl32.Vec3
+	rotation mgl32.Vec2
+
+	currentMove  mgl32.Vec3
+	currentLook  mgl32.Vec2
+	lastMousePos mgl32.Vec2
+}
+
+var instance *FPSControls
+
+func Get(lookSpeed, moveSpeed float32, position mgl32.Vec3, rotation mgl32.Vec2, window *glfw.Window) *FPSControls {
+	if instance != nil {
+		return instance
+	}
+
+	instance = &FPSControls{
+		moveSpeed: moveSpeed,
+		lookSpeed: lookSpeed,
+		position:  position,
+		rotation:  rotation,
+	}
+
+	window.SetKeyCallback(func(window *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
+		var val float32
+
+		switch action {
+		case glfw.Repeat:
+			return
+		case glfw.Press:
+			val = 1
+		case glfw.Release:
+			val = 0
+		}
+
+		switch key {
+		case glfw.KeyW:
+			instance.currentMove[2] = -val
+		case glfw.KeyS:
+			instance.currentMove[2] = val
+		case glfw.KeyA:
+			instance.currentMove[0] = -val
+		case glfw.KeyD:
+			instance.currentMove[0] = val
+		case glfw.KeySpace:
+			instance.currentMove[1] = -val
+		case glfw.KeyLeftShift:
+			instance.currentMove[1] = val
+		}
+	})
+
+	window.SetCursorPosCallback(func(window *glfw.Window, x float64, y float64) {
+		pos := mgl32.Vec2{float32(x), float32(y)}
+		instance.currentLook = instance.lastMousePos.Sub(pos)
+		instance.lastMousePos = pos
+	})
+
+	return instance
+}
+
+func (c *FPSControls) forward() mgl32.Vec3 {
+
+}
+
+func (c *FPSControls) View() mgl32.Mat4 {
+
+}