Mercurial > games > semicongine
annotate src/zamikongine/descriptor.nim @ 33:94c38e4b5782
did: refactoring, move more from make to nimscript
| author | Sam <sam@basx.dev> |
|---|---|
| date | Sun, 15 Jan 2023 23:23:54 +0700 |
| parents | 9edca5dc4e93 |
| children |
| rev | line source |
|---|---|
| 32 | 1 import std/strutils |
| 2 import std/unicode | |
| 3 import std/strformat | |
| 4 import std/typetraits | |
| 5 | |
| 30 | 6 import ./vulkan |
| 7 import ./vulkan_helpers | |
| 8 import ./math/vector | |
| 9 import ./math/matrix | |
| 10 import ./buffer | |
| 32 | 11 import ./glsl_helpers |
| 30 | 12 |
| 32 | 13 # TODO: check for alignment in uniform blocks |
| 14 # | |
| 30 | 15 type |
| 16 DescriptorType = SomeNumber|Vec|Mat | |
| 17 Descriptor*[T:DescriptorType] = object | |
| 18 value*: T | |
| 19 | |
| 20 proc createUniformDescriptorLayout*(device: VkDevice, shaderStage: VkShaderStageFlags, binding: uint32): VkDescriptorSetLayout = | |
| 21 var | |
| 22 layoutbinding = VkDescriptorSetLayoutBinding( | |
| 23 binding: binding, | |
| 24 descriptorType: VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, | |
| 25 descriptorCount: 1, | |
| 26 stageFlags: shaderStage, | |
| 27 pImmutableSamplers: nil, | |
| 28 ) | |
| 29 layoutInfo = VkDescriptorSetLayoutCreateInfo( | |
| 30 sType: VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO, | |
| 31 bindingCount: 1, | |
| 32 pBindings: addr(layoutbinding) | |
| 33 ) | |
| 34 checkVkResult device.vkCreateDescriptorSetLayout(addr(layoutInfo), nil, addr(result)) | |
| 35 | |
|
33
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
36 proc createUniformBuffers*[nBuffers: static int, Uniforms](device: VkDevice, physicalDevice: VkPhysicalDevice): array[nBuffers, Buffer] = |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
37 let size = sizeof(Uniforms) |
| 30 | 38 for i in 0 ..< nBuffers: |
| 39 var buffer = InitBuffer( | |
| 40 device, | |
| 41 physicalDevice, | |
| 42 uint64(size), | |
| 43 {UniformBuffer}, | |
| 44 {VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, VK_MEMORY_PROPERTY_HOST_COHERENT_BIT}, | |
| 45 persistentMapping=true, | |
| 46 ) | |
| 47 result[i] = buffer | |
| 32 | 48 |
| 49 template getDescriptorType*(v: Descriptor): auto = get(genericParams(typeof(v)), 0) | |
| 50 | |
| 51 func generateGLSLUniformDeclarations*[Uniforms](binding: int = 0): string {.compileTime.} = | |
| 52 var stmtList: seq[string] | |
| 53 | |
|
33
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
54 when not (Uniforms is void): |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
55 let uniformTypeName = name(Uniforms).toUpper() |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
56 let uniformInstanceName = name(Uniforms).toLower() |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
57 stmtList.add(&"layout(binding = {binding}) uniform {uniformTypeName} {{") |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
58 for fieldname, value in Uniforms().fieldPairs: |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
59 when typeof(value) is Descriptor: |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
60 let glsltype = getGLSLType[getDescriptorType(value)]() |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
61 let n = fieldname |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
62 stmtList.add(&" {glsltype} {n};") |
|
94c38e4b5782
did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents:
32
diff
changeset
|
63 stmtList.add(&"}} {uniformInstanceName};") |
| 32 | 64 |
| 65 return stmtList.join("\n") |