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comparison src/vulkan_helpers.nim @ 17:b40466fa446a

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add: vertex basics, some refactoring
author Sam <sam@basx.dev>
date Sun, 01 Jan 2023 01:00:50 +0700
parents 9e5fe647ff91
children
comparison
equal deleted inserted replaced
16:617c6dcddbe2 17:b40466fa446a
2 import std/strutils 2 import std/strutils
3 import std/strformat 3 import std/strformat
4 import std/logging 4 import std/logging
5 import std/macros 5 import std/macros
6 6
7 import ./glslang/glslang
8 import ./vulkan 7 import ./vulkan
9 import ./window 8 import ./window
10 9
11 10
12 const ENABLEVULKANVALIDATIONLAYERS* = not defined(release) 11 const ENABLEVULKANVALIDATIONLAYERS* = not defined(release)
14 13
15 template checkVkResult*(call: untyped) = 14 template checkVkResult*(call: untyped) =
16 when defined(release): 15 when defined(release):
17 discard call 16 discard call
18 else: 17 else:
19 debug "CALLING vulkan: ", astToStr(call) 18 # yes, a bit cheap, but this is only for nice debug output
19 var callstr = astToStr(call).replace("\n", "")
20 while callstr.find(" ") >= 0:
21 callstr = callstr.replace(" ", " ")
22 debug "CALLING vulkan: ", callstr
20 let value = call 23 let value = call
21 if value != VK_SUCCESS: 24 if value != VK_SUCCESS:
22 error "Vulkan error: ", astToStr(call), " returned ", $value 25 error "Vulkan error: ", astToStr(call), " returned ", $value
23 raise newException(Exception, "Vulkan error: " & astToStr(call) & " returned " & $value) 26 raise newException(Exception, "Vulkan error: " & astToStr(call) & " returned " & $value)
24 27
25 func addrOrNil[T](obj: var openArray[T]): ptr T = 28 func addrOrNil[T](obj: var openArray[T]): ptr T =
26 if obj.len > 0: addr(obj[0]) else: nil 29 if obj.len > 0: addr(obj[0]) else: nil
27 30
28 proc VK_MAKE_API_VERSION*(variant: uint32, major: uint32, minor: uint32, patch: uint32): uint32 {.compileTime.} = 31 func VK_MAKE_API_VERSION*(variant: uint32, major: uint32, minor: uint32, patch: uint32): uint32 {.compileTime.} =
29 (variant shl 29) or (major shl 22) or (minor shl 12) or patch 32 (variant shl 29) or (major shl 22) or (minor shl 12) or patch
30 33
31 34
32 proc filterForSurfaceFormat*(formats: seq[VkSurfaceFormatKHR]): seq[VkSurfaceFormatKHR] = 35 func filterForSurfaceFormat*(formats: seq[VkSurfaceFormatKHR]): seq[VkSurfaceFormatKHR] =
33 for format in formats: 36 for format in formats:
34 if format.format == VK_FORMAT_B8G8R8A8_SRGB and format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR: 37 if format.format == VK_FORMAT_B8G8R8A8_SRGB and format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR:
35 result.add(format) 38 result.add(format)
36 39
37 proc getSuitableSurfaceFormat*(formats: seq[VkSurfaceFormatKHR]): VkSurfaceFormatKHR = 40 func getSuitableSurfaceFormat*(formats: seq[VkSurfaceFormatKHR]): VkSurfaceFormatKHR =
38 let usableSurfaceFormats = filterForSurfaceFormat(formats) 41 let usableSurfaceFormats = filterForSurfaceFormat(formats)
39 if len(usableSurfaceFormats) == 0: 42 if len(usableSurfaceFormats) == 0:
40 raise newException(Exception, "No suitable surface formats found") 43 raise newException(Exception, "No suitable surface formats found")
41 return usableSurfaceFormats[0] 44 return usableSurfaceFormats[0]
42 45
43 46
44 proc cleanString*(str: openArray[char]): string = 47 func cleanString*(str: openArray[char]): string =
45 for i in 0 ..< len(str): 48 for i in 0 ..< len(str):
46 if str[i] == char(0): 49 if str[i] == char(0):
47 result = join(str[0 ..< i]) 50 result = join(str[0 ..< i])
48 break 51 break
49 52
110 checkVkResult vkGetSwapchainImagesKHR(device, swapChain, addr(n_images), nil); 113 checkVkResult vkGetSwapchainImagesKHR(device, swapChain, addr(n_images), nil);
111 result = newSeq[VkImage](n_images) 114 result = newSeq[VkImage](n_images)
112 checkVkResult vkGetSwapchainImagesKHR(device, swapChain, addr(n_images), addrOrNil(result)); 115 checkVkResult vkGetSwapchainImagesKHR(device, swapChain, addr(n_images), addrOrNil(result));
113 116
114 117
115 proc getPresentMode*(modes: seq[VkPresentModeKHR]): VkPresentModeKHR = 118 func getPresentMode*(modes: seq[VkPresentModeKHR]): VkPresentModeKHR =
116 let preferredModes = [ 119 let preferredModes = [
117 VK_PRESENT_MODE_MAILBOX_KHR, # triple buffering 120 VK_PRESENT_MODE_MAILBOX_KHR, # triple buffering
118 VK_PRESENT_MODE_FIFO_RELAXED_KHR, # double duffering 121 VK_PRESENT_MODE_FIFO_RELAXED_KHR, # double duffering
119 VK_PRESENT_MODE_FIFO_KHR, # double duffering 122 VK_PRESENT_MODE_FIFO_KHR, # double duffering
120 VK_PRESENT_MODE_IMMEDIATE_KHR, # single buffering 123 VK_PRESENT_MODE_IMMEDIATE_KHR, # single buffering
210 ) 213 )
211 checkVkResult vkCreateDevice(physicalDevice, addr(deviceCreateInfo), nil, addr(result[0])) 214 checkVkResult vkCreateDevice(physicalDevice, addr(deviceCreateInfo), nil, addr(result[0]))
212 vkGetDeviceQueue(result[0], graphicsQueueFamily, 0'u32, addr(result[1])); 215 vkGetDeviceQueue(result[0], graphicsQueueFamily, 0'u32, addr(result[1]));
213 vkGetDeviceQueue(result[0], presentationQueueFamily, 0'u32, addr(result[2])); 216 vkGetDeviceQueue(result[0], presentationQueueFamily, 0'u32, addr(result[2]));
214 217
215 proc createShaderStage*(device: VkDevice, stage: VkShaderStageFlagBits, shader: string): VkPipelineShaderStageCreateInfo =
216 const VK_GLSL_MAP = {
217 VK_SHADER_STAGE_VERTEX_BIT: GLSLANG_STAGE_VERTEX,
218 VK_SHADER_STAGE_FRAGMENT_BIT: GLSLANG_STAGE_FRAGMENT,
219 }.toTable()
220 var code = compileGLSLToSPIRV(VK_GLSL_MAP[stage], shader, "<memory-shader>")
221 var createInfo = VkShaderModuleCreateInfo(
222 sType: VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO,
223 codeSize: uint(code.len * sizeof(uint32)),
224 pCode: addrOrNil(code),
225 )
226 var shaderModule: VkShaderModule
227 checkVkResult vkCreateShaderModule(device, addr(createInfo), nil, addr(shaderModule))
228
229 return VkPipelineShaderStageCreateInfo(
230 sType: VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
231 stage: stage,
232 module: shaderModule,
233 pName: "main", # entry point for shader
234 )
235
236 proc debugCallback*( 218 proc debugCallback*(
237 messageSeverity: VkDebugUtilsMessageSeverityFlagBitsEXT, 219 messageSeverity: VkDebugUtilsMessageSeverityFlagBitsEXT,
238 messageTypes: VkDebugUtilsMessageTypeFlagsEXT, 220 messageTypes: VkDebugUtilsMessageTypeFlagsEXT,
239 pCallbackData: VkDebugUtilsMessengerCallbackDataEXT, 221 pCallbackData: VkDebugUtilsMessengerCallbackDataEXT,
240 userData: pointer 222 userData: pointer