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Add swapchain create flags support to OpenXR layers

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- Introduced SwapchainCreateFlags enum to control swapchain creation (NORMAL, STATIC, PROTECTED) in OpenXR composition layers.
- Allows creation of static layers (never change after creation) and protected layers (for DRM-protected content).
- Changed internal logic from enum to bool for simplicity; users now select "protected" or not.
- Added support for protected content in viewport-based layers.
- Refactored naming, documentation, and improved reusability.
- Minor cleanup: removed unused variable and added missing space.
This commit is contained in:
timmno12
2025-07-15 22:32:51 +02:00
parent 1d8e738499
commit ecfb96239c
5 changed files with 37 additions and 2 deletions
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15
modules/openxr/extensions/openxr_composition_layer_extension.cpp
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@@ -269,12 +269,19 @@ void OpenXRViewportCompositionLayerProvider::create_android_surface() {
}
}
// Check to see if content should be protected.
XrSwapchainCreateFlags create_flags = 0;
if (protected_content) {
create_flags = XR_SWAPCHAIN_CREATE_PROTECTED_CONTENT_BIT;
}
// The XR_FB_android_surface_swapchain_create extension mandates that format, sampleCount,
// faceCount, arraySize, and mipCount must be zero.
XrSwapchainCreateInfo info = {
XR_TYPE_SWAPCHAIN_CREATE_INFO, // type
next_pointer, // next
0, // createFlags
create_flags, // createFlags
XR_SWAPCHAIN_USAGE_SAMPLED_BIT | XR_SWAPCHAIN_USAGE_COLOR_ATTACHMENT_BIT | XR_SWAPCHAIN_USAGE_MUTABLE_FORMAT_BIT, // usageFlags
0, // format
0, // sampleCount
@@ -471,7 +478,7 @@ bool OpenXRViewportCompositionLayerProvider::update_and_acquire_swapchain(bool p
// See if our current swapchain is outdated.
if (subviewport.swapchain_info.get_swapchain() != XR_NULL_HANDLE) {
// If this swap chain, or the previous one, were static, then we can't reuse it.
if (swapchain_size == subviewport.viewport_size && !p_static_image && !subviewport.static_image) {
if (swapchain_size == subviewport.viewport_size && !p_static_image && !subviewport.static_image && protected_content == subviewport.swapchain_protected_content) {
// We're all good! Just acquire it.
// We can ignore should_render here, return will be false.
bool should_render = true;
@@ -489,6 +496,9 @@ bool OpenXRViewportCompositionLayerProvider::update_and_acquire_swapchain(bool p
if (p_static_image) {
create_flags |= XR_SWAPCHAIN_CREATE_STATIC_IMAGE_BIT;
}
if (protected_content) {
create_flags |= XR_SWAPCHAIN_CREATE_PROTECTED_CONTENT_BIT;
}
if (!subviewport.swapchain_info.create(create_flags, XR_SWAPCHAIN_USAGE_SAMPLED_BIT | XR_SWAPCHAIN_USAGE_COLOR_ATTACHMENT_BIT | XR_SWAPCHAIN_USAGE_MUTABLE_FORMAT_BIT, swapchain_format, subviewport.viewport_size.width, subviewport.viewport_size.height, sample_count, array_size)) {
swapchain_size = Size2i();
return false;
@@ -503,6 +513,7 @@ bool OpenXRViewportCompositionLayerProvider::update_and_acquire_swapchain(bool p
swapchain_size = subviewport.viewport_size;
subviewport.static_image = p_static_image;
subviewport.swapchain_protected_content = protected_content;
return ret;
}