shadps4-emu/shadPS4
Oct 2024 – Feb 2025
5 Months active
Languages Used
C++AssemblyCMakeGLSL
Technical Skills
DebuggingGPU ProgrammingGraphics ProgrammingLoggingLow-level ProgrammingCode Formatting
psucien
PROFILE
Psucien
Over five months, Bad Cast contributed to the shadps4-emu/shadPS4 repository, focusing on low-level graphics, memory management, and system programming in C++ and Vulkan. They expanded detiling support for new texture formats, improved shader and rendering pipeline stability, and introduced APIs for protected memory management. Their work addressed complex issues such as MSAA sample count accuracy, mipmap allocation, and gamma correction under HDR transitions, ensuring robust cross-platform behavior. Through targeted bug fixes, code formatting, and build system enhancements, Bad Cast delivered maintainable solutions that improved rendering reliability, debugging efficiency, and overall emulator correctness across diverse hardware and operating systems.
Overall Statistics
Feature vs Bugs
42%Features
Repository Contributions
30Total
Bugs
11
Commits
30
Features
8
Lines of code
693
Activity Months5
Your Network
61 people
Work History
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for shadPS4 (shadps4-emu/shadPS4): Delivered a critical bug fix to gamma correction consistency under HDR-disabled scenarios, improving visual fidelity and reliability across HDR states. The fix ensures the frame is recreated with the correct screen dimensions and refines HDR handling by using an integer representation for better compatibility.
1 Commits
Feb 1, 2025February 2025 monthly summary for shadPS4 (shadps4-emu/shadPS4): Delivered a critical bug fix to gamma correction consistency under HDR-disabled scenarios, improving visual fidelity and reliability across HDR states. The fix ensures the frame is recreated with the correct screen dimensions and refines HDR handling by using an integer representation for better compatibility.
February 2025
January 2025
8 Commits • 2 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for shadPS4: Delivered key feature improvements and essential stability fixes across the shader, kernel, and renderer stack. Detiler enhancements improved video processing efficiency through shader optimizations and a DispatchIndirect refactor. Introduced the PRT Aperture Management API to safely configure Protected Memory regions, enabling robust memory management. Implemented a set of cross-platform bug fixes (Vulkan debug casts, AMDGPU indirect dispatch, macOS indirect drawing, and video core barrier handling) to improve stability and correctness on multiple platforms, alongside a clang-format cleanup to align process.cpp with project standards. Overall, these efforts improve throughput, reliability, and maintainability, supporting higher-quality builds and smoother deployments.
January 2025
8 Commits • 2 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for shadPS4: Delivered key feature improvements and essential stability fixes across the shader, kernel, and renderer stack. Detiler enhancements improved video processing efficiency through shader optimizations and a DispatchIndirect refactor. Introduced the PRT Aperture Management API to safely configure Protected Memory regions, enabling robust memory management. Implemented a set of cross-platform bug fixes (Vulkan debug casts, AMDGPU indirect dispatch, macOS indirect drawing, and video core barrier handling) to improve stability and correctness on multiple platforms, alongside a clang-format cleanup to align process.cpp with project standards. Overall, these efforts improve throughput, reliability, and maintainability, supporting higher-quality builds and smoother deployments.
December 2024
10 Commits • 3 Features
Dec 1, 2024December 2024 (2024-12) monthly summary for shadPS4: Expanded video core detiling support to additional formats, introduced a new equeue API for high-resolution timer events, and enhanced debugging/tracing plus build-system tooling. Major stability work addressed rendering pipeline issues including command buffer state after scheduler rotation, ASC queue ID correctness, ASC ring wrap handling, and missing FCE barrier, with improvements to logging and debug builds. These initiatives delivered broader texture format compatibility, more robust runtime behavior, and stronger developer tooling, enabling faster iteration and more reliable releases.
10 Commits • 3 Features
Dec 1, 2024December 2024 (2024-12) monthly summary for shadPS4: Expanded video core detiling support to additional formats, introduced a new equeue API for high-resolution timer events, and enhanced debugging/tracing plus build-system tooling. Major stability work addressed rendering pipeline issues including command buffer state after scheduler rotation, ASC queue ID correctness, ASC ring wrap handling, and missing FCE barrier, with improvements to logging and debug builds. These initiatives delivered broader texture format compatibility, more robust runtime behavior, and stronger developer tooling, enabling faster iteration and more reliable releases.
December 2024
November 2024
9 Commits • 2 Features
Nov 1, 2024Monthly work summary for 2024-11 (shadPS4 repository). Focused on increasing stability, correctness, and maintainability of the shader/draw pipeline, memory layout handling for mipmaps, and render target logic, while improving code quality and aligning dependencies. The month delivered targeted fixes to shader recompiler/resource management and draw-path correctness, improved mipmap size calculations to prevent artifacts, restored proper render-target and texture-type handling, and included non-functional improvements such as dependency upgrades and formatting cleanup. Overall, these changes reduce user-visible rendering artifacts, increase emulator reliability, and simplify future maintenance and feature work.
November 2024
9 Commits • 2 Features
Nov 1, 2024Monthly work summary for 2024-11 (shadPS4 repository). Focused on increasing stability, correctness, and maintainability of the shader/draw pipeline, memory layout handling for mipmaps, and render target logic, while improving code quality and aligning dependencies. The month delivered targeted fixes to shader recompiler/resource management and draw-path correctness, improved mipmap size calculations to prevent artifacts, restored proper render-target and texture-type handling, and included non-functional improvements such as dependency upgrades and formatting cleanup. Overall, these changes reduce user-visible rendering artifacts, increase emulator reliability, and simplify future maintenance and feature work.
October 2024
2 Commits • 1 Features
Oct 1, 2024October 2024: Delivered targeted stability and observability improvements for shadPS4. Key outcomes include a bug fix addressing MSAA sample count calculation by introducing a NumSamples method for 2D MSAA and 2D MSAA Array image types, and ensuring image/view metadata reflect accurate sample counts to prevent rendering/processing errors. Additionally, implemented an observability enhancement to reduce log noise when retrieving the SDK version by downgrading the log level from INFO to DEBUG, preserving functionality while lowering production log volume. These changes improve rendering reliability, debugging efficiency, and operational observability without impacting runtime behavior.
2 Commits • 1 Features
Oct 1, 2024October 2024: Delivered targeted stability and observability improvements for shadPS4. Key outcomes include a bug fix addressing MSAA sample count calculation by introducing a NumSamples method for 2D MSAA and 2D MSAA Array image types, and ensuring image/view metadata reflect accurate sample counts to prevent rendering/processing errors. Additionally, implemented an observability enhancement to reduce log noise when retrieving the SDK version by downgrading the log level from INFO to DEBUG, preserving functionality while lowering production log volume. These changes improve rendering reliability, debugging efficiency, and operational observability without impacting runtime behavior.
October 2024
Activity
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Quality Metrics
Correctness87.0%
Maintainability86.0%
Architecture81.4%
Performance77.6%
AI Usage20.6%
Skills & Technologies
Programming Languages
AssemblyC++CMakeGLSL
Technical Skills
Bug FixBuild SystemsBuild system configurationC++C++ DevelopmentCMakeCode FormattingDebuggingDebugging ToolsDriver DevelopmentDriver developmentEmbedded systemsGPU ArchitectureGPU ProgrammingGPU programming
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