Add existing file

examples/shaders/raymarching/main.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+func main() {
+	screenWidth := int32(1280)
+	screenHeight := int32(720)
+
+	rl.SetConfigFlags(rl.FlagMsaa4xHint) // ENABLE 4X MSAA IF AVAILABLE
+
+	rl.InitWindow(screenWidth, screenHeight, "raylib [shaders] example - raymarching")
+
+	camera := rl.Camera{}
+	camera.Position = rl.NewVector3(2.5, 2.5, 3.0)
+	camera.Target = rl.NewVector3(0.0, 0.0, 0.7)
+	camera.Up = rl.NewVector3(0.0, 1.0, 0.0)
+	camera.Fovy = 65.0
+
+	shader := rl.LoadShader("", "raymarching.fs")
+
+	viewEyeLoc := rl.GetShaderLocation(shader, "viewEye")
+	viewCenterLoc := rl.GetShaderLocation(shader, "viewCenter")
+	runtTimeLoc := rl.GetShaderLocation(shader, "runTime")
+	resolutionLoc := rl.GetShaderLocation(shader, "resolution")
+
+	resolution := []float32{float32(screenWidth), float32(screenHeight)}
+	rl.SetShaderValue(shader, resolutionLoc, resolution, rl.ShaderUniformVec2)
+
+	runTimer := float32(0)
+
+	rl.DisableCursor()
+
+	rl.SetTargetFPS(60)
+
+	for !rl.WindowShouldClose() {
+		rl.UpdateCamera(&camera, rl.CameraThirdPerson) // Update camera with free camera mode
+
+		camPos := []float32{camera.Position.X, camera.Position.Y, camera.Position.Z}
+		camTarget := []float32{camera.Target.X, camera.Target.Y, camera.Target.Z}
+
+		deltaTime := rl.GetFrameTime()
+		runTimer += deltaTime
+		runTime := []float32{runTimer}
+
+		rl.SetShaderValue(shader, viewEyeLoc, camPos, rl.ShaderUniformVec3)
+		rl.SetShaderValue(shader, viewCenterLoc, camTarget, rl.ShaderUniformVec3)
+		rl.SetShaderValue(shader, runtTimeLoc, runTime, rl.ShaderUniformFloat)
+
+		rl.BeginDrawing()
+
+		rl.ClearBackground(rl.RayWhite)
+
+		rl.BeginShaderMode(shader)
+
+		rl.DrawRectangle(0, 0, int32(rl.GetScreenWidth()), int32(rl.GetScreenHeight()), rl.White)
+		rl.EndShaderMode()
+
+		rl.DrawText("(c) Raymarching shader by Iñigo Quilez. MIT License.", screenWidth-280, screenHeight-20, 10, rl.Black)
+
+		rl.DrawFPS(10, 10)
+
+		rl.EndDrawing()
+	}
+
+	rl.UnloadShader(shader) // Unload shader
+
+	rl.CloseWindow()
+}