Add hardware compatibility flags for CPU rendering and HIPRT control

- Introduced `--force-cpu-rendering` and `--disable-hiprt` flags to the runner command, allowing users to enforce CPU rendering and disable HIPRT acceleration.
- Updated the runner initialization and context structures to accommodate the new flags, enhancing flexibility in rendering configurations.
- Modified the rendering logic to respect these flags, improving compatibility and user control over rendering behavior in Blender.

internal/runner/runner.go

@@ -54,10 +54,15 @@ type Runner struct {
 	hasNVIDIA          bool
 	gpuBackendProbed   bool
 	gpuDetectionFailed bool
+
+	// forceCPURendering forces CPU rendering for all jobs regardless of metadata/backend detection.
+	forceCPURendering bool
+	// disableHIPRT disables HIPRT acceleration when configuring Cycles HIP devices.
+	disableHIPRT bool
 }
 
 // New creates a new runner.
-func New(managerURL, name, hostname string) *Runner {
+func New(managerURL, name, hostname string, forceCPURendering, disableHIPRT bool) *Runner {
 	manager := api.NewManagerClient(managerURL)
 
 	r := &Runner{
@@ -67,6 +72,9 @@ func New(managerURL, name, hostname string) *Runner {
 		processes:  executils.NewProcessTracker(),
 		stopChan:   make(chan struct{}),
 		processors: make(map[string]tasks.Processor),
+
+		forceCPURendering: forceCPURendering,
+		disableHIPRT:      disableHIPRT,
 	}
 
 	// Generate fingerprint
@@ -307,6 +315,8 @@ func (r *Runner) executeJob(job *api.NextJobResponse) (err error) {
 			r.IsGPULockedOut(),
 			r.HasHIP(),
 			r.GPUDetectionFailed(),
+			r.forceCPURendering,
+			r.disableHIPRT,
 			func() { r.SetGPULockedOut(true) },
 		)