1# Feature Specification: Migrate to WebKitGTK 6.0
2
3**Feature Branch**: `004-migrate-to-webkitgtk`  
4**Created**: 2025-01-21  
5**Status**: Draft  
6**Input**: User description: "Migrate To webkitgtk-6.0, I Want to migrate the entire project to webkitgtk6 in order to be able to enable GPU rendering through vulkan layer"
7
8## Execution Flow (main)
9```
101. Parse user description from Input
11   → Migrate browser to WebKitGTK 6.0 for Vulkan GPU rendering
122. Extract key concepts from description
13   → Identified: migration, WebKitGTK 6.0, GPU rendering, Vulkan support
143. For each unclear aspect:
15   → Performance targets marked for clarification
16   → Migration timeline marked for clarification
174. Fill User Scenarios & Testing section
18   → User flow: Browser continues to work with improved GPU performance
195. Generate Functional Requirements
20   → Each requirement is testable
21   → Migration scope defined
226. Identify Key Entities
23   → Browser engine, rendering pipeline, GPU acceleration
247. Run Review Checklist
25   → WARN "Spec has uncertainties around performance targets"
268. Return: SUCCESS (spec ready for planning)
27```
28
29---
30
31## ⚡ Quick Guidelines
32- ✅ Focus on WHAT users need and WHY
33- ❌ Avoid HOW to implement (no tech stack, APIs, code structure)
34- 👥 Written for business stakeholders, not developers
35
36---
37
38## User Scenarios & Testing
39
40### Primary User Story
41As a user of the dumber browser, I want the browser to utilize modern GPU acceleration capabilities through Vulkan rendering, resulting in smoother scrolling, faster page rendering, and improved performance for graphics-intensive web content, while maintaining all existing browser functionality.
42
43### Acceptance Scenarios
441. **Given** a user opens the browser, **When** they navigate to any website, **Then** the browser renders pages using GPU acceleration when available
452. **Given** a user visits a graphics-intensive website (e.g., with 3D content, animations), **When** the page loads, **Then** GPU rendering provides smooth performance without visual artifacts
463. **Given** a system with Vulkan-capable GPU, **When** the browser starts, **Then** it automatically detects and enables GPU acceleration
474. **Given** a system without Vulkan support, **When** the browser starts, **Then** it gracefully falls back to software rendering
485. **Given** the browser is using GPU acceleration, **When** monitoring system resources, **Then** CPU usage is reduced compared to software rendering
49
50### Edge Cases
51- What happens when GPU drivers are outdated or incompatible?
52- How does system handle GPU driver crashes during browsing?
53- What happens on systems with multiple GPUs (integrated + discrete)?
54- How does browser perform on low-end GPUs vs high-end GPUs?
55- What happens when switching between GPU and software rendering mid-session?
56
57## Requirements
58
59### Functional Requirements
60- **FR-001**: System MUST maintain all existing browser functionality after migration
61- **FR-002**: System MUST support GPU-accelerated rendering when Vulkan-capable hardware is available
62- **FR-003**: System MUST provide fallback to software rendering when GPU acceleration is unavailable
63- **FR-004**: System MUST maintain backward compatibility with existing user data (bookmarks, history, settings)
64- **FR-005**: System MUST preserve current browser interface and user experience
65- **FR-006**: System MUST detect GPU capabilities at startup and choose appropriate rendering path
66- **FR-007**: System MUST handle GPU driver failures gracefully without crashing
67- **FR-008**: Browser performance MUST improve by [NEEDS CLARIFICATION: specific performance target not specified - 20%? 50%? What metrics?]
68- **FR-009**: System MUST support common web standards (HTML5, CSS3, JavaScript) without regression
69- **FR-010**: System MUST maintain support for all previously working websites
70- **FR-011**: GPU memory usage MUST remain within [NEEDS CLARIFICATION: acceptable limits not specified]
71- **FR-012**: Migration MUST be completed within [NEEDS CLARIFICATION: timeline not specified]
72
73### Key Entities
74- **Browser Engine**: Core rendering engine that processes and displays web content
75- **GPU Rendering Pipeline**: System component responsible for hardware-accelerated graphics
76- **Fallback Renderer**: Software-based rendering system for non-GPU scenarios
77- **Performance Monitor**: Component tracking rendering performance and resource usage
78- **Compatibility Layer**: System ensuring existing functionality works with new rendering engine
79
80---
81
82## Review & Acceptance Checklist
83*GATE: Automated checks run during main() execution*
84
85### Content Quality
86- [x] No implementation details (languages, frameworks, APIs)
87- [x] Focused on user value and business needs
88- [x] Written for non-technical stakeholders
89- [x] All mandatory sections completed
90
91### Requirement Completeness
92- [ ] No [NEEDS CLARIFICATION] markers remain
93- [x] Requirements are testable and unambiguous (except marked items)
94- [ ] Success criteria are measurable (performance targets needed)
95- [x] Scope is clearly bounded
96- [x] Dependencies and assumptions identified
97
98---
99
100## Execution Status
101*Updated by main() during processing*
102
103- [x] User description parsed
104- [x] Key concepts extracted
105- [x] Ambiguities marked
106- [x] User scenarios defined
107- [x] Requirements generated
108- [x] Entities identified
109- [ ] Review checklist passed (has clarifications needed)
110
111---