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helpers.odin
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helpers.odin
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package webgpu
import "core:intrinsics"
import "core:fmt"
import "core:runtime"
link :: proc(l: ^$T) -> ^T where intrinsics.type_is_subtype_of(T, ChainedStruct) || intrinsics.type_is_subtype_of(T, ChainedStructOut) {
when T == SurfaceDescriptorFromMetalLayer {
l.s_type = .SurfaceDescriptorFromMetalLayer
} else when T == SurfaceDescriptorFromWindowsHWND {
l.s_type = .SurfaceDescriptorFromWindowsHWND
} else when T == SurfaceDescriptorFromXlibWindow {
l.s_type = .SurfaceDescriptorFromXlibWindow
} else when T == SurfaceDescriptorFromCanvasHTMLSelector {
l.s_type = .SurfaceDescriptorFromCanvasHTMLSelector
} else when T == SurfaceDescriptorFromWaylandSurface {
l.s_type = .SurfaceDescriptorFromWaylandSurface
} else when T == SurfaceDescriptorFromXcbWindow {
l.s_type = .SurfaceDescriptorFromXcbWindow
} else when T == SurfaceDescriptorFromAndroidNativeWindow {
l.s_type = .SurfaceDescriptorFromAndroidNativeWindow
} else when T == ShaderModuleSPIRVDescriptor {
l.s_type = .ShaderModuleSPIRVDescriptor
} else when T == ShaderModuleWGSLDescriptor {
l.s_type = .ShaderModuleWGSLDescriptor
} else when T == PrimitiveDepthClipControl {
l.s_type = .PrimitiveDepthClipControl
} else when T == RenderPassDescriptorMaxDrawCount {
l.s_type = .RenderPassDescriptorMaxDrawCount
} else when WGPU_NATIVE {
when T == DeviceExtras {
l.s_type = .DeviceExtras
} else when T == RequiredLimitsExtras {
l.s_type = .RequiredLimitsExtras
} else when T == SupportedLimitsExtras {
l.s_type = .SupportedLimitsExtras
} else when T == PipelineLayoutExtras {
l.s_type = .PipelineLayoutExtras
} else when T == InstanceExtras {
l.s_type = .InstanceExtras
} else when T == SwapChainDescriptorExtras {
l.s_type = .SwapChainDescriptorExtras
} else when T == ShaderModuleGLSLDescriptor {
l.s_type = .ShaderModuleGLSLDescriptor
} else do #panic("not implemented in link()")
} else do #panic("not implemented in link()")
return l
}
chain :: proc(links: ..^ChainedStruct) -> (c: ^ChainedStruct) {
if len(links) == 0 do return
c = links[0]
selector := c
for l in links[1:] {
selector.next = l
selector = l
}
return
}
chain_out :: proc(links: ..^ChainedStructOut) -> (c: ^ChainedStructOut) {
if len(links) == 0 do return
c = links[0]
selector := c
for l in links[1:] {
selector.next = l
selector = l
}
return
}
request_cb :: proc "contextless" ($CallbackType: typeid) -> CallbackType where
intrinsics.type_is_proc(CallbackType) &&
intrinsics.type_proc_parameter_count(CallbackType) == 4 &&
intrinsics.type_proc_return_count(CallbackType) == 0 &&
intrinsics.type_proc_parameter_type(CallbackType, 2) == cstring &&
intrinsics.type_proc_parameter_type(CallbackType, 3) == rawptr
{
Status :: intrinsics.type_proc_parameter_type(CallbackType, 0)
Res :: intrinsics.type_proc_parameter_type(CallbackType, 1)
return proc "c" (status: Status, res: Res, message: cstring, user_data: rawptr) {
out := transmute(^Res)user_data
if status == .Success {
out^ = res
} else {
context = runtime.default_context()
fmt.printf("Could not get %v: %s\n", typeid_of(Res), message)
}
}
}