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New: motion blur

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This commit is contained in:
mklefrancois 2021-09-09 16:59:36 +02:00
parent fe070436a2
commit 596b641a56
5 changed files with 102 additions and 60 deletions
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11
ray_tracing_motionblur/hello_vulkan.cpp
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@ -663,13 +663,18 @@ void HelloVulkan::createBottomLevelAS()
}
//--------------------------------------------------------------------------------------------------
//
//
void HelloVulkan::createTopLevelAS()
{
// This is to fix a padding issue 2021.08.13
// VkAccelerationStructureMotionInstanceNV must have a stride of 160 bytes.
// See https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/VkAccelerationStructureGeometryInstancesDataKHR.html
struct VkAccelerationStructureMotionInstanceNVPad : VkAccelerationStructureMotionInstanceNV
{
short _pad;
uint64_t _pad{0};
};
static_assert((sizeof(VkAccelerationStructureMotionInstanceNVPad) == 160));
// #NV_Motion_blur
uint32_t objId;
@ -679,7 +684,7 @@ void HelloVulkan::createTopLevelAS()
objId = 0;
{
// Position of the instance at T0 and T1
nvmath::mat4f matT0 = m_instances[0].transform; // Identity
nvmath::mat4f matT0 = m_instances[0].transform;
nvmath::mat4f matT1 = nvmath::translation_mat4(nvmath::vec3f(0.30f, 0.0f, 0.0f)) * matT0;
VkAccelerationStructureMatrixMotionInstanceNV data;