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annotation update

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turanszkij
2018-04-13 15:23:36 +01:00
parent 77a1492dcd
commit 40bfb772e1
1 changed files with 10 additions and 7 deletions
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WickedEngine/wiGraphicsDevice_Vulkan.cpp
+10 -7
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@@ -1092,27 +1092,30 @@ namespace wiGraphicsTypes
// Create default pipeline:
{
// The desired descriptor layout will be as such (per shader stage):
//
// We are mapping HLSL constructs to Vulkan descriptor type equivalents. The difference is that DX11 manages resource bindings by "Memory Type"
// ##################################################################################
// ## The desired descriptor layout will be as such (per shader stage) ##
// ##################################################################################
//
// - We are mapping HLSL constructs to Vulkan descriptor type equivalents. The difference is that DX11 manages resource bindings by "Memory Type"
// but HLSL has distinctive resource types which map to them. Vulkan API has a more straight forward mapping but we are emulating the
// DX11 system for now...
//
// We are creating this table (descriptor set) for every shader stage. The SPIR-V shaders will have set and layout bindings compiled
// - We are creating this table (descriptor set) for every shader stage. The SPIR-V shaders will have set and layout bindings compiled
// into them for each resource.
// - The [layout set] binding will correspond to shader stage
// - except in compute shader because it will have only single descriptor table, special logic will handle that
// - The [layout location] binding will correspond to Vulkan name offset inside the set which is hard coded
// (eg. see VULKAN_DESCRIPTOR_SET_OFFSET_CBV in ShaderInterop_Vulkan.h)
//
// Left hand side of this table is essentially DX12-like descriptor table layout (per stage)
// - Left hand side of this table is essentially DX12-like descriptor table layout (per stage)
// - DX12 maps perfectly to DX11 regarding table layout
// Right hand side is corresponding Vulkan layout (per stage).
// - Right hand side is corresponding Vulkan layout (per stage).
// - Vulkan implementation has bigger tables.
// - CBV table has same amount like DX12
// - SRV table has 3x amount of DX12
// - CBV table has 3x amount of DX12
// - UAV table has 3x amount of DX12
// - UAV counter buffer would take +1x but not used for now...
// - Sampler table has same amount like DX12
//
// ================================================================================||===============================================================