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gpu: improve Dawn example backend type detection

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-12-01 08:46:09 +00:00
parent 91728ebde9
commit 8f3726dfa2
1 changed files with 13 additions and 17 deletions
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30
gpu/src/dawn/sample_utils.zig
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@ -33,22 +33,6 @@ fn printDeviceError(error_type: c.WGPUErrorType, message: [*c]const u8, _: ?*c_v
} }
} }
// // Default to D3D12, Metal, Vulkan, OpenGL in that order as D3D12 and Metal are the preferred on
// // their respective platforms, and Vulkan is preferred to OpenGL
// #if defined(DAWN_ENABLE_BACKEND_D3D12)
// static wgpu::BackendType backendType = wgpu::BackendType::D3D12;
// #elif defined(DAWN_ENABLE_BACKEND_METAL)
// static wgpu::BackendType backendType = wgpu::BackendType::Metal;
// #elif defined(DAWN_ENABLE_BACKEND_VULKAN)
// static wgpu::BackendType backendType = wgpu::BackendType::Vulkan;
// #elif defined(DAWN_ENABLE_BACKEND_OPENGLES)
// static wgpu::BackendType backendType = wgpu::BackendType::OpenGLES;
// #elif defined(DAWN_ENABLE_BACKEND_DESKTOP_GL)
// static wgpu::BackendType backendType = wgpu::BackendType::OpenGL;
// #else
// # error
// #endif
const CmdBufType = enum { none, terrible }; const CmdBufType = enum { none, terrible };
// static std::unique_ptr<dawn_native::Instance> instance; // static std::unique_ptr<dawn_native::Instance> instance;
@ -67,8 +51,15 @@ const Setup = struct {
window: glfw.Window, window: glfw.Window,
}; };
fn detectBackendType() c.WGPUBackendType {
const target = @import("builtin").target;
if (target.isDarwin()) return c.WGPUBackendType_Metal;
if (target.os.tag == .windows) return c.WGPUBackendType_D3D12;
return c.WGPUBackendType_Vulkan;
}
pub fn setup() !Setup { pub fn setup() !Setup {
const backend_type = c.WGPUBackendType_Metal; const backend_type = detectBackendType();
const cmd_buf_type = CmdBufType.none; const cmd_buf_type = CmdBufType.none;
try glfw.init(.{}); try glfw.init(.{});
@ -88,6 +79,11 @@ pub fn setup() !Setup {
const adapter = c.machDawnNativeAdapters_index(adapters, i); const adapter = c.machDawnNativeAdapters_index(adapters, i);
const properties = c.machDawnNativeAdapter_getProperties(adapter); const properties = c.machDawnNativeAdapter_getProperties(adapter);
if (c.machDawnNativeAdapterProperties_getBackendType(properties) == backend_type) { if (c.machDawnNativeAdapterProperties_getBackendType(properties) == backend_type) {
const vendor_id = c.machDawnNativeAdapterProperties_getVendorID(properties);
const device_id = c.machDawnNativeAdapterProperties_getDeviceID(properties);
const name = c.machDawnNativeAdapterProperties_getName(properties);
const driver_description = c.machDawnNativeAdapterProperties_getDriverDescription(properties);
std.debug.print("found adapter vendor_id={} device_id={} name={s} driver={s}\n", .{vendor_id, device_id, name, driver_description});
backend_adapter = adapter; backend_adapter = adapter;
} }
} }