forked from joejulian/gio
Chris Waldon
dbf6429026
This commit switches the priority of EGL and Vulkan so that EGL is always tried first. This is because our EGL backend performs significantly better than the Vulkan one, and we want the most performant experience to be the default. Our hypothesis is that the EGL backend is benefitting from lots of optimization within the OpenGL driver that Vulkan drivers expect applications to perform themselves. Rather than invest a bunch of time optimizing the Vulkan backend right now, this change lets us focus on other priorities. Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
75 lines
1.3 KiB
Go
75 lines
1.3 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
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//go:build (linux || freebsd) && !novulkan
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// +build linux freebsd
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// +build !novulkan
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package headless
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import (
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"unsafe"
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"gioui.org/gpu"
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"gioui.org/internal/vk"
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)
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type vkContext struct {
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physDev vk.PhysicalDevice
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inst vk.Instance
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dev vk.Device
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queueFam int
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}
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func init() {
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newContextFallback = newVulkanContext
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}
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func newVulkanContext() (context, error) {
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inst, err := vk.CreateInstance()
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if err != nil {
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return nil, err
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}
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physDev, qFam, err := vk.ChoosePhysicalDevice(inst, 0)
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if err != nil {
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vk.DestroyInstance(inst)
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return nil, err
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}
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dev, err := vk.CreateDeviceAndQueue(physDev, qFam)
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if err != nil {
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vk.DestroyInstance(inst)
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return nil, err
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}
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ctx := &vkContext{
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physDev: physDev,
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inst: inst,
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dev: dev,
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queueFam: qFam,
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}
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return ctx, nil
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}
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func (c *vkContext) API() gpu.API {
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return gpu.Vulkan{
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PhysDevice: unsafe.Pointer(c.physDev),
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Device: unsafe.Pointer(c.dev),
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Format: int(vk.FORMAT_R8G8B8A8_SRGB),
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QueueFamily: c.queueFam,
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QueueIndex: 0,
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}
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}
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func (c *vkContext) MakeCurrent() error {
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return nil
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}
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func (c *vkContext) ReleaseCurrent() {
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}
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func (c *vkContext) Release() {
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vk.DeviceWaitIdle(c.dev)
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vk.DestroyDevice(c.dev)
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vk.DestroyInstance(c.inst)
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*c = vkContext{}
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}
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