Catcrafts/Crafter.Graphics
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descriptor heap static offset method

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This commit is contained in:
Jorijn van der Graaf 2026-04-10 20:30:58 +02:00
commit 5427867fff
2 changed files with 25 additions and 7 deletions
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2
examples/VulkanUI/main.cpp
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@ -13,7 +13,7 @@ int main() {
Window window(1280, 720, "HelloVulkan");
VkCommandBuffer cmd = window.StartInit();
DescriptorHeapVulkan descriptorHeap;
descriptorHeap.Initialize(1,1,0);
descriptorHeap.Initialize(1,2,0);
VkSpecializationMapEntry entry = {
.constantID = 0,

30
interfaces/Crafter.Graphics-DescriptorHeapVulkan.cppm
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@ -31,10 +31,11 @@ import :VulkanBuffer;
export namespace Crafter {
struct DescriptorHeapVulkan {
inline static VulkanBuffer<std::uint8_t, true, true> resourceHeap[Window::numFrames];
inline static VulkanBuffer<std::uint8_t, true, true> samplerHeap[Window::numFrames];
inline static std::uint32_t bufferStartOffset;
inline static std::uint16_t bufferStartElement;
VulkanBuffer<std::uint8_t, true, true> resourceHeap[Window::numFrames];
VulkanBuffer<std::uint8_t, true, true> samplerHeap[Window::numFrames];
std::uint32_t bufferStartOffset;
std::uint16_t bufferStartElement;
void Initialize(std::uint16_t images, std::uint16_t buffers, std::uint16_t samplers) {
std::uint32_t descriptorRegion = images * Device::descriptorHeapProperties.imageDescriptorSize + buffers * Device::descriptorHeapProperties.bufferDescriptorSize;
std::uint32_t alignedDescriptorRegion = (descriptorRegion + Device::descriptorHeapProperties.imageDescriptorAlignment - 1) & ~(Device::descriptorHeapProperties.imageDescriptorAlignment - 1);
@ -47,10 +48,27 @@ export namespace Crafter {
}
bufferStartOffset = bufferStartElement * Device::descriptorHeapProperties.bufferDescriptorSize;
for(std::uint8_t i = 0; i < Window::numFrames; i++) {
resourceHeap[i].Create(VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_DESCRIPTOR_HEAP_BIT_EXT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, resourceSize);
samplerHeap[i].Create(VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_DESCRIPTOR_HEAP_BIT_EXT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, samplerSize);
resourceHeap[i].Resize(VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_DESCRIPTOR_HEAP_BIT_EXT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, resourceSize);
samplerHeap[i].Resize(VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_DESCRIPTOR_HEAP_BIT_EXT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, samplerSize);
}
}
inline static std::uint32_t GetBufferOffset(std::uint16_t images, std::uint16_t buffers) {
std::uint32_t bufferStartElement = images * Device::descriptorHeapProperties.imageDescriptorSize / Device::descriptorHeapProperties.bufferDescriptorSize;
if(images > 0 && bufferStartElement == 0) {
bufferStartElement = 1;
}
return bufferStartElement * Device::descriptorHeapProperties.bufferDescriptorSize;
}
inline static std::uint16_t GetBufferOffsetElement(std::uint16_t images, std::uint16_t buffers) {
std::uint16_t bufferStartElement = images * Device::descriptorHeapProperties.imageDescriptorSize / Device::descriptorHeapProperties.bufferDescriptorSize;
if(images > 0 && bufferStartElement == 0) {
bufferStartElement = 1;
}
return bufferStartElement;
}
};
}