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Apply shader group handle alignment where required

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Fixes #787
This commit is contained in:
Sascha Willems 2020-12-12 08:20:33 +01:00
parent 21f9cd5251
commit a369e6ed96
7 changed files with 37 additions and 26 deletions
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5
base/VulkanRaytracingSample.cpp
View file

@ -205,10 +205,11 @@ void VulkanRaytracingSample::prepare()
VkStridedDeviceAddressRegionKHR VulkanRaytracingSample::getSbtEntryStridedDeviceAddressRegion(VkBuffer buffer, uint32_t handleCount)
{
const uint32_t handleSizeAligned = vks::tools::alignedSize(rayTracingPipelineProperties.shaderGroupHandleSize, rayTracingPipelineProperties.shaderGroupHandleAlignment);
VkStridedDeviceAddressRegionKHR stridedDeviceAddressRegionKHR{};
stridedDeviceAddressRegionKHR.deviceAddress = getBufferDeviceAddress(buffer);
stridedDeviceAddressRegionKHR.stride = rayTracingPipelineProperties.shaderGroupHandleSize;
stridedDeviceAddressRegionKHR.size = rayTracingPipelineProperties.shaderGroupHandleSize * handleCount;
stridedDeviceAddressRegionKHR.stride = handleSizeAligned;
stridedDeviceAddressRegionKHR.size = handleCount * handleSizeAligned;
return stridedDeviceAddressRegionKHR;
}

6
base/VulkanTools.cpp
View file

@ -378,5 +378,11 @@ namespace vks
std::ifstream f(filename.c_str());
return !f.fail();
}
uint32_t alignedSize(uint32_t value, uint32_t alignment)
{
return (value + alignment - 1) & ~(alignment - 1);
}
}
}

2
base/VulkanTools.h
View file

@ -125,5 +125,7 @@ namespace vks
/** @brief Checks if a file exists */
bool fileExists(const std::string &filename);
uint32_t alignedSize(uint32_t value, uint32_t alignment);
}
}

22
examples/raytracingbasic/raytracingbasic.cpp
View file

@ -539,9 +539,9 @@ public:
*/
void createShaderBindingTable() {
const uint32_t handleSize = rayTracingPipelineProperties.shaderGroupHandleSize;
const uint32_t handleAlignment = rayTracingPipelineProperties.shaderGroupHandleAlignment;
const uint32_t handleSizeAligned = vks::tools::alignedSize(rayTracingPipelineProperties.shaderGroupHandleSize, rayTracingPipelineProperties.shaderGroupHandleAlignment);
const uint32_t groupCount = static_cast<uint32_t>(shaderGroups.size());
const uint32_t sbtSize = handleSize * groupCount;
const uint32_t sbtSize = groupCount * handleSizeAligned;
std::vector<uint8_t> shaderHandleStorage(sbtSize);
VK_CHECK_RESULT(vkGetRayTracingShaderGroupHandlesKHR(device, pipeline, 0, groupCount, sbtSize, shaderHandleStorage.data()));
@ -557,8 +557,8 @@ public:
missShaderBindingTable.map();
hitShaderBindingTable.map();
memcpy(raygenShaderBindingTable.mapped, shaderHandleStorage.data(), handleSize);
memcpy(missShaderBindingTable.mapped, shaderHandleStorage.data() + handleAlignment, handleSize);
memcpy(hitShaderBindingTable.mapped, shaderHandleStorage.data() + handleAlignment * 2, handleSize);
memcpy(missShaderBindingTable.mapped, shaderHandleStorage.data() + handleSizeAligned, handleSize);
memcpy(hitShaderBindingTable.mapped, shaderHandleStorage.data() + handleSizeAligned * 2, handleSize);
}
/*
@ -760,20 +760,22 @@ public:
Setup the buffer regions pointing to the shaders in our shader binding table
*/
const uint32_t handleSizeAligned = vks::tools::alignedSize(rayTracingPipelineProperties.shaderGroupHandleSize, rayTracingPipelineProperties.shaderGroupHandleAlignment);
VkStridedDeviceAddressRegionKHR raygenShaderSbtEntry{};
raygenShaderSbtEntry.deviceAddress = getBufferDeviceAddress(raygenShaderBindingTable.buffer);
raygenShaderSbtEntry.stride = rayTracingPipelineProperties.shaderGroupHandleSize;
raygenShaderSbtEntry.size = rayTracingPipelineProperties.shaderGroupHandleSize;
raygenShaderSbtEntry.stride = handleSizeAligned;
raygenShaderSbtEntry.size = handleSizeAligned;
VkStridedDeviceAddressRegionKHR missShaderSbtEntry{};
missShaderSbtEntry.deviceAddress = getBufferDeviceAddress(missShaderBindingTable.buffer);
missShaderSbtEntry.stride = rayTracingPipelineProperties.shaderGroupHandleSize;
missShaderSbtEntry.size = rayTracingPipelineProperties.shaderGroupHandleSize;
missShaderSbtEntry.stride = handleSizeAligned;
missShaderSbtEntry.size = handleSizeAligned;
VkStridedDeviceAddressRegionKHR hitShaderSbtEntry{};
hitShaderSbtEntry.deviceAddress = getBufferDeviceAddress(hitShaderBindingTable.buffer);
hitShaderSbtEntry.stride = rayTracingPipelineProperties.shaderGroupHandleSize;
hitShaderSbtEntry.size = rayTracingPipelineProperties.shaderGroupHandleSize;
hitShaderSbtEntry.stride = handleSizeAligned;
hitShaderSbtEntry.size = handleSizeAligned;
VkStridedDeviceAddressRegionKHR callableShaderSbtEntry{};

12
examples/raytracingcallable/raytracingcallable.cpp
View file

@ -337,9 +337,9 @@ public:
*/
void createShaderBindingTables() {
const uint32_t handleSize = rayTracingPipelineProperties.shaderGroupHandleSize;
const uint32_t handleAlignment = rayTracingPipelineProperties.shaderGroupHandleAlignment;
const uint32_t groupCount = 3 + objectCount;
const uint32_t sbtSize = handleSize * groupCount;
const uint32_t handleSizeAligned = vks::tools::alignedSize(rayTracingPipelineProperties.shaderGroupHandleSize, rayTracingPipelineProperties.shaderGroupHandleAlignment);
const uint32_t groupCount = static_cast<uint32_t>(shaderGroups.size());
const uint32_t sbtSize = groupCount * handleSizeAligned;
std::vector<uint8_t> shaderHandleStorage(sbtSize);
VK_CHECK_RESULT(vkGetRayTracingShaderGroupHandlesKHR(device, pipeline, 0, groupCount, sbtSize, shaderHandleStorage.data()));
@ -352,9 +352,9 @@ public:
// Copy handles
memcpy(shaderBindingTables.raygen.mapped, shaderHandleStorage.data(), handleSize);
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleAlignment, handleSize);
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleAlignment * 2, handleSize);
memcpy(shaderBindingTables.callable.mapped, shaderHandleStorage.data() + handleAlignment * 3, handleSize * 3);
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleSizeAligned, handleSize);
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleSizeAligned * 2, handleSize);
memcpy(shaderBindingTables.callable.mapped, shaderHandleStorage.data() + handleSizeAligned * 3, handleSize * 3);
}
/*

8
examples/raytracingreflections/raytracingreflections.cpp
View file

@ -279,9 +279,9 @@ public:
*/
void createShaderBindingTables() {
const uint32_t handleSize = rayTracingPipelineProperties.shaderGroupHandleSize;
const uint32_t handleAlignment = rayTracingPipelineProperties.shaderGroupHandleAlignment;
const uint32_t handleSizeAligned = vks::tools::alignedSize(rayTracingPipelineProperties.shaderGroupHandleSize, rayTracingPipelineProperties.shaderGroupHandleAlignment);
const uint32_t groupCount = static_cast<uint32_t>(shaderGroups.size());
const uint32_t sbtSize = handleSize * groupCount;
const uint32_t sbtSize = groupCount * handleSizeAligned;
std::vector<uint8_t> shaderHandleStorage(sbtSize);
VK_CHECK_RESULT(vkGetRayTracingShaderGroupHandlesKHR(device, pipeline, 0, groupCount, sbtSize, shaderHandleStorage.data()));
@ -292,8 +292,8 @@ public:
// Copy handles
memcpy(shaderBindingTables.raygen.mapped, shaderHandleStorage.data(), handleSize);
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleAlignment, handleSize);
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleAlignment * 2, handleSize);
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleSizeAligned, handleSize);
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleSizeAligned * 2, handleSize);
}
/*

8
examples/raytracingshadows/raytracingshadows.cpp
View file

@ -282,9 +282,9 @@ public:
*/
void createShaderBindingTables() {
const uint32_t handleSize = rayTracingPipelineProperties.shaderGroupHandleSize;
const uint32_t handleAlignment = rayTracingPipelineProperties.shaderGroupHandleAlignment;
const uint32_t handleSizeAligned = vks::tools::alignedSize(rayTracingPipelineProperties.shaderGroupHandleSize, rayTracingPipelineProperties.shaderGroupHandleAlignment);
const uint32_t groupCount = static_cast<uint32_t>(shaderGroups.size());
const uint32_t sbtSize = handleSize * groupCount;
const uint32_t sbtSize = groupCount * handleSizeAligned;
std::vector<uint8_t> shaderHandleStorage(sbtSize);
VK_CHECK_RESULT(vkGetRayTracingShaderGroupHandlesKHR(device, pipeline, 0, groupCount, sbtSize, shaderHandleStorage.data()));
@ -297,8 +297,8 @@ public:
// Copy handles
memcpy(shaderBindingTables.raygen.mapped, shaderHandleStorage.data(), handleSize);
// We are using two miss shaders, so we need to get two handles for the miss shader binding table
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleAlignment, handleSize * 2);
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleAlignment * 3, handleSize);
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleSizeAligned, handleSize * 2);
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleSizeAligned * 3, handleSize);
}
/*