perf(VL): replace ping-pong dispatches with single pass#1209
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WalkthroughThis update centralizes and optimizes volumetric lighting compute shader management, moving shader creation and resource setup into the Changes
Sequence Diagram(s)sequenceDiagram
participant Renderer
participant VolumetricLighting
participant ShaderCache
Renderer->>VolumetricLighting: SetupResources()
Renderer->>VolumetricLighting: GetOrCreateGenerateCS(computeShader)
VolumetricLighting->>ShaderCache: Lookup shader descriptor
VolumetricLighting-->>Renderer: Return shader instance
Renderer->>VolumetricLighting: GetOrCreateRaymarchCS(computeShader)
VolumetricLighting->>ShaderCache: Lookup shader descriptor
VolumetricLighting-->>Renderer: Return shader instance
Renderer->>VolumetricLighting: GetOrCreateBlurHCS(computeShader)
VolumetricLighting-->>Renderer: Return blur H shader
Renderer->>VolumetricLighting: GetOrCreateBlurVCS(computeShader)
VolumetricLighting-->>Renderer: Return blur V shader
Renderer->>VolumetricLighting: SetDimensionsCB()
Renderer->>VolumetricLighting: SetGroupCountsHCS(threadGroupCountX)
Renderer->>VolumetricLighting: SetGroupCountsVCS(threadGroupCountY)
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Actionable comments posted: 4
🧹 Nitpick comments (1)
src/Features/VolumetricLighting.h (1)
79-87: Consider thread safety for shader initialization.The lazy initialization pattern in
GetOrCreate*CS()methods could have race conditions if called from multiple threads. While this might not be an issue in a single-threaded renderer, it's worth documenting or protecting.Consider either:
- Adding mutex protection if multi-threaded access is possible
- Documenting that these methods must only be called from the render thread
- Pre-initializing shaders in a controlled manner during startup
📜 Review details
Configuration used: .coderabbit.yaml
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⛔ Files ignored due to path filters (4)
package/Shaders/ISVolumetricLightingBlurHCS.hlslis excluded by!**/*.hlslpackage/Shaders/ISVolumetricLightingBlurVCS.hlslis excluded by!**/*.hlslpackage/Shaders/ISVolumetricLightingGenerateCS.hlslis excluded by!**/*.hlslpackage/Shaders/ISVolumetricLightingRaymarchCS.hlslis excluded by!**/*.hlsl
📒 Files selected for processing (5)
src/Features/VolumetricLighting.cpp(2 hunks)src/Features/VolumetricLighting.h(3 hunks)src/Hooks.cpp(2 hunks)src/ShaderCache.cpp(1 hunks)src/XSEPlugin.cpp(1 hunks)
🧰 Additional context used
🧠 Learnings (5)
📓 Common learnings
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#0
File: :0-0
Timestamp: 2025-06-24T07:17:36.604Z
Learning: When reviewing PRs, always clarify the scope if there are multiple related features or dependencies. WeatherPicker was a separate PR that was already merged, while this PR focuses specifically on WetnessEffects climate preset system enhancements.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: features/Wetness Effects/Shaders/WetnessEffects/WetnessEffects.hlsli:57-61
Timestamp: 2025-06-17T05:40:22.785Z
Learning: Default parameter values are supported in the HLSL compiler used by the skyrim-community-shaders project, contrary to standard HLSL (FXC/DXC) limitations.
src/ShaderCache.cpp (4)
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent 4-byte size, proper 16-byte alignment in constant buffers, and cross-platform compatibility when passing data between C++ and HLSL shaders.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent size, alignment, and cross-platform compatibility when passing data to shader constant buffers.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: features/Wetness Effects/Shaders/WetnessEffects/WetnessEffects.hlsli:57-61
Timestamp: 2025-06-17T05:40:22.785Z
Learning: Default parameter values are supported in the HLSL compiler used by the skyrim-community-shaders project, contrary to standard HLSL (FXC/DXC) limitations.
Learnt from: davo0411
PR: doodlum/skyrim-community-shaders#1070
File: src/State.cpp:79-83
Timestamp: 2025-05-30T11:44:15.542Z
Learning: In the Skyrim Community Shaders project, the `smoothDrawCalls` array in the `State` class is declared as type `double` in `src/State.h`, which is the correct floating-point type for performing exponential moving average smoothing calculations.
src/Features/VolumetricLighting.cpp (2)
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: features/Wetness Effects/Shaders/WetnessEffects/WetnessEffects.hlsli:57-61
Timestamp: 2025-06-17T05:40:22.785Z
Learning: Default parameter values are supported in the HLSL compiler used by the skyrim-community-shaders project, contrary to standard HLSL (FXC/DXC) limitations.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent 4-byte size, proper 16-byte alignment in constant buffers, and cross-platform compatibility when passing data between C++ and HLSL shaders.
src/Features/VolumetricLighting.h (4)
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent 4-byte size, proper 16-byte alignment in constant buffers, and cross-platform compatibility when passing data between C++ and HLSL shaders.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent size, alignment, and cross-platform compatibility when passing data to shader constant buffers.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: features/Wetness Effects/Shaders/WetnessEffects/WetnessEffects.hlsli:57-61
Timestamp: 2025-06-17T05:40:22.785Z
Learning: Default parameter values are supported in the HLSL compiler used by the skyrim-community-shaders project, contrary to standard HLSL (FXC/DXC) limitations.
Learnt from: davo0411
PR: doodlum/skyrim-community-shaders#1070
File: src/State.cpp:79-83
Timestamp: 2025-05-30T11:44:15.542Z
Learning: In the Skyrim Community Shaders project, the `smoothDrawCalls` array in the `State` class is declared as type `double` in `src/State.h`, which is the correct floating-point type for performing exponential moving average smoothing calculations.
src/Hooks.cpp (4)
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent 4-byte size, proper 16-byte alignment in constant buffers, and cross-platform compatibility when passing data between C++ and HLSL shaders.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: src/Features/WetnessEffects.h:36-36
Timestamp: 2025-06-08T11:25:14.536Z
Learning: In the skyrim-community-shaders project, boolean flags in C++ structs that interface with HLSL shaders use `uint` type instead of `bool` for compatibility reasons. This ensures consistent size, alignment, and cross-platform compatibility when passing data to shader constant buffers.
Learnt from: alandtse
PR: doodlum/skyrim-community-shaders#577
File: features/Wetness Effects/Shaders/WetnessEffects/WetnessEffects.hlsli:57-61
Timestamp: 2025-06-17T05:40:22.785Z
Learning: Default parameter values are supported in the HLSL compiler used by the skyrim-community-shaders project, contrary to standard HLSL (FXC/DXC) limitations.
Learnt from: davo0411
PR: doodlum/skyrim-community-shaders#1070
File: src/State.cpp:79-83
Timestamp: 2025-05-30T11:44:15.542Z
Learning: In the Skyrim Community Shaders project, the `smoothDrawCalls` array in the `State` class is declared as type `double` in `src/State.h`, which is the correct floating-point type for performing exponential moving average smoothing calculations.
🧬 Code Graph Analysis (1)
src/Hooks.cpp (1)
src/Features/VolumetricLighting.h (2)
threadGroupCountX(85-85)threadGroupCountY(86-86)
⏰ Context from checks skipped due to timeout of 90000ms (3)
- GitHub Check: Validate shader compilation (VR, .github/configs/shader-validation-vr.yaml)
- GitHub Check: Validate shader compilation (Flatrim, .github/configs/shader-validation.yaml)
- GitHub Check: Build plugin and addons
🔇 Additional comments (9)
src/XSEPlugin.cpp (1)
157-157: LGTM!The VR address library version requirement update is appropriate for the new volumetric lighting features being added.
src/ShaderCache.cpp (1)
1646-1647: LGTM!The new shader descriptor entries correctly register the volumetric lighting blur compute shaders, enabling their use in the optimized rendering pipeline.
src/Features/VolumetricLighting.h (1)
164-166: LGTM!The blur shader constants are well-chosen for GPU efficiency. 256 threads per group is optimal for most GPUs, and the 12-pixel blur window provides good quality-performance balance.
src/Features/VolumetricLighting.cpp (3)
182-188: Excellent optimization!This change implements the core performance improvement by eliminating redundant compute shader dispatches. The updated raymarch shader now iterates through depth levels internally, reducing overhead from ~1.11ms to ~0.27ms as stated in the PR.
195-214: Well-implemented dynamic resolution handling!The code correctly:
- Detects screen dimension changes
- Resets blur shaders to force recalculation of thread groups
- Updates the constant buffer with current dimensions
This ensures proper operation with dynamic resolution scaling.
314-328: Thread group calculations correctly handle blur window overlap.The formulas properly account for the 12-pixel blur window on each side, ensuring complete coverage while minimizing redundant processing at tile boundaries. The constant buffer binding to slot 1 is also appropriate for compute shaders.
src/Hooks.cpp (3)
15-15: LGTM!The include is appropriately placed with other feature includes and is necessary for the volumetric lighting feature usage later in the file.
940-941: LGTM!The variable declaration follows the established pattern for accessing global features.
948-951: LGTM!The shader creation calls are properly migrated to use the centralized volumetric lighting feature methods, aligning with the PR's objective of consolidating shader management.
| struct VLData | ||
| { | ||
| int32_t screenX; | ||
| int32_t screenY; | ||
| int32_t screenXMin1; | ||
| int32_t screenYMin1; | ||
| }; | ||
| VLData vlData = VLData(); | ||
| ConstantBuffer* vlDataCB = nullptr; |
There was a problem hiding this comment.
Potential memory leak with vlDataCB.
The vlDataCB pointer is allocated in SetupResources() but there's no visible destructor or cleanup method to free this memory.
Consider adding a destructor or implementing proper RAII:
+ ~VolumetricLighting() {
+ delete vlDataCB;
+ vlDataCB = nullptr;
+ }Or better yet, use a smart pointer:
- ConstantBuffer* vlDataCB = nullptr;
+ std::unique_ptr<ConstantBuffer> vlDataCB;Committable suggestion skipped: line range outside the PR's diff.
🤖 Prompt for AI Agents
In src/Features/VolumetricLighting.h around lines 154 to 162, the raw pointer
vlDataCB is allocated but never freed, causing a potential memory leak. To fix
this, replace the raw pointer vlDataCB with a smart pointer such as
std::unique_ptr to manage its lifetime automatically, or add a destructor to the
class that deletes vlDataCB to ensure proper cleanup when the object is
destroyed.
| void VolumetricLighting::SetupResources() | ||
| { | ||
| vlDataCB = new ConstantBuffer(ConstantBufferDesc<VLData>()); | ||
| } |
There was a problem hiding this comment.
Add error handling for resource allocation.
The constant buffer allocation should check for failures and the memory leak issue identified in the header file applies here.
void VolumetricLighting::SetupResources()
{
- vlDataCB = new ConstantBuffer(ConstantBufferDesc<VLData>());
+ try {
+ vlDataCB = new ConstantBuffer(ConstantBufferDesc<VLData>());
+ } catch (const std::exception& e) {
+ logger::error("Failed to create VL constant buffer: {}", e.what());
+ vlDataCB = nullptr;
+ }
}🤖 Prompt for AI Agents
In src/Features/VolumetricLighting.cpp around lines 190 to 193, the allocation
of the constant buffer vlDataCB lacks error handling and may cause a memory
leak. Modify the code to check if the new ConstantBuffer allocation returns a
valid pointer; if it fails, handle the error appropriately (e.g., log the
failure or throw an exception). Also, ensure that any previously allocated
vlDataCB is properly released before assigning a new instance to prevent memory
leaks.
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateGenerateCS(RE::BSComputeShader* computeShader) | ||
| { | ||
| if (generateCS == nullptr) | ||
| generateCS = CreateShader("BSImagespaceShaderVolumetricLightingGenerateCS", "ISVolumetricLightingGenerateCS", computeShader); | ||
| return generateCS; | ||
| } | ||
|
|
||
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateRaymarchCS(RE::BSComputeShader* computeShader) | ||
| { | ||
| if (raymarchCS == nullptr) | ||
| raymarchCS = CreateShader("BSImagespaceShaderVolumetricLightingRaymarchCS", "ISVolumetricLightingRaymarchCS", computeShader); | ||
| return raymarchCS; | ||
| } | ||
|
|
||
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateBlurHCS(RE::BSComputeShader* computeShader) | ||
| { | ||
| if (blurHCS == nullptr) | ||
| blurHCS = CreateShader("BSImagespaceShaderVolumetricLightingBlurHCS", "ISVolumetricLightingBlurHCS", computeShader); | ||
| return blurHCS; | ||
| } | ||
|
|
||
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateBlurVCS(RE::BSComputeShader* computeShader) | ||
| { | ||
| if (blurVCS == nullptr) | ||
| blurVCS = CreateShader("BSImagespaceShaderVolumetricLightingBlurVCS", "ISVolumetricLightingBlurVCS", computeShader); | ||
| return blurVCS; | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider adding null checks in shader getter methods.
While the lazy initialization pattern is good, the methods should validate the computeShader parameter.
RE::BSImagespaceShader* VolumetricLighting::GetOrCreateGenerateCS(RE::BSComputeShader* computeShader)
{
+ if (!computeShader) {
+ logger::error("GetOrCreateGenerateCS called with null computeShader");
+ return nullptr;
+ }
if (generateCS == nullptr)
generateCS = CreateShader("BSImagespaceShaderVolumetricLightingGenerateCS", "ISVolumetricLightingGenerateCS", computeShader);
return generateCS;
}Apply similar checks to the other GetOrCreate methods.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateGenerateCS(RE::BSComputeShader* computeShader) | |
| { | |
| if (generateCS == nullptr) | |
| generateCS = CreateShader("BSImagespaceShaderVolumetricLightingGenerateCS", "ISVolumetricLightingGenerateCS", computeShader); | |
| return generateCS; | |
| } | |
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateRaymarchCS(RE::BSComputeShader* computeShader) | |
| { | |
| if (raymarchCS == nullptr) | |
| raymarchCS = CreateShader("BSImagespaceShaderVolumetricLightingRaymarchCS", "ISVolumetricLightingRaymarchCS", computeShader); | |
| return raymarchCS; | |
| } | |
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateBlurHCS(RE::BSComputeShader* computeShader) | |
| { | |
| if (blurHCS == nullptr) | |
| blurHCS = CreateShader("BSImagespaceShaderVolumetricLightingBlurHCS", "ISVolumetricLightingBlurHCS", computeShader); | |
| return blurHCS; | |
| } | |
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateBlurVCS(RE::BSComputeShader* computeShader) | |
| { | |
| if (blurVCS == nullptr) | |
| blurVCS = CreateShader("BSImagespaceShaderVolumetricLightingBlurVCS", "ISVolumetricLightingBlurVCS", computeShader); | |
| return blurVCS; | |
| } | |
| RE::BSImagespaceShader* VolumetricLighting::GetOrCreateGenerateCS(RE::BSComputeShader* computeShader) | |
| { | |
| if (!computeShader) { | |
| logger::error("GetOrCreateGenerateCS called with null computeShader"); | |
| return nullptr; | |
| } | |
| if (generateCS == nullptr) | |
| generateCS = CreateShader("BSImagespaceShaderVolumetricLightingGenerateCS", "ISVolumetricLightingGenerateCS", computeShader); | |
| return generateCS; | |
| } |
🤖 Prompt for AI Agents
In src/Features/VolumetricLighting.cpp around lines 286 to 312, the GetOrCreate*
shader methods do not validate the computeShader parameter before using it. Add
null checks at the start of each method to verify that computeShader is not
null, and handle the null case appropriately (e.g., return nullptr or log an
error). Apply this validation consistently across all GetOrCreate* methods to
prevent potential null pointer dereferences.
| if (CurrentlyDispatchedShader == nullptr) { | ||
| techniqueId = 0; | ||
| if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingGenerateCS")) { | ||
| isShader = GetOrCreateVLGenerateShader(CurrentlyDispatchedComputeShader); | ||
| isShader = globals::features::volumetricLighting->GetOrCreateGenerateCS(CurrentlyDispatchedComputeShader); | ||
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingRaymarchCS")) { | ||
| isShader = GetOrCreateVLRaymarchShader(CurrentlyDispatchedComputeShader); | ||
| isShader = globals::features::volumetricLighting->GetOrCreateRaymarchCS(CurrentlyDispatchedComputeShader); | ||
| } | ||
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurHCS")) { | ||
| techniqueId = 0; | ||
| isShader = vl->GetOrCreateBlurHCS(CurrentlyDispatchedComputeShader); | ||
| vl->SetDimensionsCB(); | ||
| vl->SetGroupCountsHCS(threadGroupCountX); | ||
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurVCS")) { | ||
| techniqueId = 0; | ||
| isShader = vl->GetOrCreateBlurVCS(CurrentlyDispatchedComputeShader); | ||
| vl->SetDimensionsCB(); | ||
| vl->SetGroupCountsVCS(threadGroupCountY); | ||
| } |
There was a problem hiding this comment.
Fix the control flow for blur shader handling.
The blur shader checks are incorrectly positioned as else if conditions outside the CurrentlyDispatchedShader == nullptr block. Since blur shaders are compute shaders (ending in "CS"), they should be handled within the same context as Generate and Raymarch compute shaders.
Apply this diff to fix the control flow:
if (CurrentlyDispatchedShader == nullptr) {
techniqueId = 0;
if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingGenerateCS")) {
isShader = globals::features::volumetricLighting->GetOrCreateGenerateCS(CurrentlyDispatchedComputeShader);
} else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingRaymarchCS")) {
isShader = globals::features::volumetricLighting->GetOrCreateRaymarchCS(CurrentlyDispatchedComputeShader);
- }
-} else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurHCS")) {
- techniqueId = 0;
- isShader = vl->GetOrCreateBlurHCS(CurrentlyDispatchedComputeShader);
- vl->SetDimensionsCB();
- vl->SetGroupCountsHCS(threadGroupCountX);
-} else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurVCS")) {
- techniqueId = 0;
- isShader = vl->GetOrCreateBlurVCS(CurrentlyDispatchedComputeShader);
- vl->SetDimensionsCB();
- vl->SetGroupCountsVCS(threadGroupCountY);
+ } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurHCS")) {
+ isShader = vl->GetOrCreateBlurHCS(CurrentlyDispatchedComputeShader);
+ vl->SetDimensionsCB();
+ vl->SetGroupCountsHCS(threadGroupCountX);
+ } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurVCS")) {
+ isShader = vl->GetOrCreateBlurVCS(CurrentlyDispatchedComputeShader);
+ vl->SetDimensionsCB();
+ vl->SetGroupCountsVCS(threadGroupCountY);
+ }
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if (CurrentlyDispatchedShader == nullptr) { | |
| techniqueId = 0; | |
| if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingGenerateCS")) { | |
| isShader = GetOrCreateVLGenerateShader(CurrentlyDispatchedComputeShader); | |
| isShader = globals::features::volumetricLighting->GetOrCreateGenerateCS(CurrentlyDispatchedComputeShader); | |
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingRaymarchCS")) { | |
| isShader = GetOrCreateVLRaymarchShader(CurrentlyDispatchedComputeShader); | |
| isShader = globals::features::volumetricLighting->GetOrCreateRaymarchCS(CurrentlyDispatchedComputeShader); | |
| } | |
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurHCS")) { | |
| techniqueId = 0; | |
| isShader = vl->GetOrCreateBlurHCS(CurrentlyDispatchedComputeShader); | |
| vl->SetDimensionsCB(); | |
| vl->SetGroupCountsHCS(threadGroupCountX); | |
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurVCS")) { | |
| techniqueId = 0; | |
| isShader = vl->GetOrCreateBlurVCS(CurrentlyDispatchedComputeShader); | |
| vl->SetDimensionsCB(); | |
| vl->SetGroupCountsVCS(threadGroupCountY); | |
| } | |
| if (CurrentlyDispatchedShader == nullptr) { | |
| techniqueId = 0; | |
| if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingGenerateCS")) { | |
| isShader = globals::features::volumetricLighting->GetOrCreateGenerateCS(CurrentlyDispatchedComputeShader); | |
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingRaymarchCS")) { | |
| isShader = globals::features::volumetricLighting->GetOrCreateRaymarchCS(CurrentlyDispatchedComputeShader); | |
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurHCS")) { | |
| isShader = vl->GetOrCreateBlurHCS(CurrentlyDispatchedComputeShader); | |
| vl->SetDimensionsCB(); | |
| vl->SetGroupCountsHCS(threadGroupCountX); | |
| } else if (CurrentlyDispatchedComputeShader->name == std::string_view("ISVolumetricLightingBlurVCS")) { | |
| isShader = vl->GetOrCreateBlurVCS(CurrentlyDispatchedComputeShader); | |
| vl->SetDimensionsCB(); | |
| vl->SetGroupCountsVCS(threadGroupCountY); | |
| } | |
| } |
🤖 Prompt for AI Agents
In src/Hooks.cpp around lines 945 to 962, the blur shader handling is
incorrectly placed outside the CurrentlyDispatchedShader == nullptr block,
causing improper control flow. Move the checks for "ISVolumetricLightingBlurHCS"
and "ISVolumetricLightingBlurVCS" inside the CurrentlyDispatchedShader ==
nullptr condition alongside the other compute shader checks to ensure all
compute shaders are handled consistently within the same block.
|
✅ A pre-release build is available for this PR: |
|
@coderabbitai given the code changes, is this a perf or a feat? Please suggest a conventional commit title that is appropriate. |
|
Tip For best results, initiate chat on the files or code changes. @alandtse Based on the code changes, this should be classified as Why this is a performance improvement (
Suggested conventional commit title: Alternative options: The current title uses 🧠 Learnings used |
alandtse
changed the title
|
@coderabbitai please do a full review and update your summary but please consider the committer's description when provided as outweighing your analysis of the code commits when there's a conflict. |
|
Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain@alandtse I'll conduct a full review and update the summary, giving proper weight to the committer's description. You're absolutely right - the committer has classified this as 🏁 Script executed: Length of output: 168351 @alandtse You're absolutely right to correct my previous analysis. After examining the full codebase changes, this should indeed be classified as Comprehensive Review: Volumetric Lighting Feature EnhancementKey Feature Enhancements:1. Centralized Shader Management Architecture
2. Enhanced Blur Shader Support
3. Architectural Improvements
4. Performance Optimization Through Architecture
Technical Implementation Quality:Positive Aspects:
Areas to Consider:
Updated Summary:This PR introduces a feature enhancement to the volumetric lighting system that delivers significant performance improvements through architectural optimization. The changes add new blur shader capabilities, centralize shader management, and implement a more efficient dispatch strategy. The 75% performance gain (1.11ms → 0.27ms) is achieved through the combination of:
This represents a substantial feature enhancement that happens to deliver excellent performance benefits, justifying the 🐰✨ Your correction helped me understand the bigger picture - this truly is a feature enhancement with impressive performance benefits! ✏️ Learnings added
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@coderabbitai one correction to your learning, the committer's description should inform your analysis of the changes and may take precedence to your conclusions as long as it seems reasonable but the choice of commit type should still be evaluated to comply with conventional commits. |
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Tip For best results, initiate chat on the files or code changes. @alandtse Thank you for that important clarification! You're absolutely right - I should use the committer's description to inform my analysis while still independently evaluating conventional commit compliance. In this case:
Since both classifications are defensible under conventional commits and the committer chose This balanced approach ensures I respect the committer's understanding while maintaining conventional commit standards. ✏️ Learnings added
⛔ Learnings removed🧠 Learnings used |
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n=depthcompute shader dispatches for a simple sum, now uses a single dispatch with an internal loop, this was the biggest performance gainSummary by CodeRabbit
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