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Merge pull request #109532 from dsnopek/openxr-api-environment-blend-mode-thread-safe

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OpenXR: Safely set environment blend mode when rendering on a separate thread
This commit is contained in:
Thaddeus Crews 2025-09-30 18:35:17 -05:00
commit 4f66d53068
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GPG key ID: 8C6E5FEB5FC03CCC
2 changed files with 42 additions and 21 deletions
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29
modules/openxr/openxr_api.cpp
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@ -2099,7 +2099,7 @@ bool OpenXRAPI::poll_events() {
}
}
void OpenXRAPI::_allocate_view_buffers(uint32_t p_view_count, bool p_submit_depth_buffer) {
void OpenXRAPI::_allocate_view_buffers_rt(uint32_t p_view_count, bool p_submit_depth_buffer) {
// Must be called from rendering thread!
ERR_NOT_ON_RENDER_THREAD;
@ -2145,7 +2145,7 @@ void OpenXRAPI::_allocate_view_buffers(uint32_t p_view_count, bool p_submit_dept
}
}
void OpenXRAPI::_set_render_session_running(bool p_is_running) {
void OpenXRAPI::_set_render_session_running_rt(bool p_is_running) {
// Must be called from rendering thread!
ERR_NOT_ON_RENDER_THREAD;
@ -2154,7 +2154,7 @@ void OpenXRAPI::_set_render_session_running(bool p_is_running) {
openxr_api->render_state.running = p_is_running;
}
void OpenXRAPI::_set_render_display_info(XrTime p_predicted_display_time, bool p_should_render) {
void OpenXRAPI::_set_render_display_info_rt(XrTime p_predicted_display_time, bool p_should_render) {
// Must be called from rendering thread!
ERR_NOT_ON_RENDER_THREAD;
@ -2164,7 +2164,16 @@ void OpenXRAPI::_set_render_display_info(XrTime p_predicted_display_time, bool p
openxr_api->render_state.should_render = p_should_render;
}
void OpenXRAPI::_set_render_play_space(uint64_t p_play_space) {
void OpenXRAPI::_set_render_environment_blend_mode_rt(int32_t p_environment_blend_mode) {
// Must be called from rendering thread!
ERR_NOT_ON_RENDER_THREAD;
OpenXRAPI *openxr_api = OpenXRAPI::get_singleton();
ERR_FAIL_NULL(openxr_api);
openxr_api->render_state.environment_blend_mode = XrEnvironmentBlendMode(p_environment_blend_mode);
}
void OpenXRAPI::_set_render_play_space_rt(uint64_t p_play_space) {
// Must be called from rendering thread!
ERR_NOT_ON_RENDER_THREAD;
@ -2173,7 +2182,7 @@ void OpenXRAPI::_set_render_play_space(uint64_t p_play_space) {
openxr_api->render_state.play_space = XrSpace(p_play_space);
}
void OpenXRAPI::_set_render_state_multiplier(double p_render_target_size_multiplier) {
void OpenXRAPI::_set_render_state_multiplier_rt(double p_render_target_size_multiplier) {
// Must be called from rendering thread!
ERR_NOT_ON_RENDER_THREAD;
@ -2182,7 +2191,7 @@ void OpenXRAPI::_set_render_state_multiplier(double p_render_target_size_multipl
openxr_api->render_state.render_target_size_multiplier = p_render_target_size_multiplier;
}
void OpenXRAPI::_set_render_state_render_region(const Rect2i &p_render_region) {
void OpenXRAPI::_set_render_state_render_region_rt(const Rect2i &p_render_region) {
ERR_NOT_ON_RENDER_THREAD;
OpenXRAPI *openxr_api = OpenXRAPI::get_singleton();
@ -2515,7 +2524,7 @@ void OpenXRAPI::end_frame() {
XR_TYPE_FRAME_END_INFO, // type
nullptr, // next
render_state.predicted_display_time, // displayTime
environment_blend_mode, // environmentBlendMode
render_state.environment_blend_mode, // environmentBlendMode
0, // layerCount
nullptr // layers
};
@ -2565,7 +2574,7 @@ void OpenXRAPI::end_frame() {
}
XrCompositionLayerFlags layer_flags = XR_COMPOSITION_LAYER_CORRECT_CHROMATIC_ABERRATION_BIT;
if (!projection_layer_is_first || environment_blend_mode != XR_ENVIRONMENT_BLEND_MODE_OPAQUE) {
if (!projection_layer_is_first || render_state.environment_blend_mode != XR_ENVIRONMENT_BLEND_MODE_OPAQUE) {
layer_flags |= XR_COMPOSITION_LAYER_BLEND_TEXTURE_SOURCE_ALPHA_BIT;
}
@ -2610,7 +2619,7 @@ void OpenXRAPI::end_frame() {
XR_TYPE_FRAME_END_INFO, // type
frame_end_info_next_pointer, // next
render_state.predicted_display_time, // displayTime
environment_blend_mode, // environmentBlendMode
render_state.environment_blend_mode, // environmentBlendMode
static_cast<uint32_t>(layers_list.size()), // layerCount
layers_list.ptr() // layers
};
@ -3786,6 +3795,7 @@ bool OpenXRAPI::set_environment_blend_mode(XrEnvironmentBlendMode p_blend_mode)
if (emulate_environment_blend_mode_alpha_blend && p_blend_mode == XR_ENVIRONMENT_BLEND_MODE_ALPHA_BLEND) {
requested_environment_blend_mode = XR_ENVIRONMENT_BLEND_MODE_ALPHA_BLEND;
environment_blend_mode = XR_ENVIRONMENT_BLEND_MODE_OPAQUE;
set_render_environment_blend_mode(environment_blend_mode);
return true;
}
// We allow setting this when not initialized and will check if it is supported when initializing.
@ -3793,6 +3803,7 @@ bool OpenXRAPI::set_environment_blend_mode(XrEnvironmentBlendMode p_blend_mode)
else if (!is_initialized() || is_environment_blend_mode_supported(p_blend_mode)) {
requested_environment_blend_mode = p_blend_mode;
environment_blend_mode = p_blend_mode;
set_render_environment_blend_mode(environment_blend_mode);
return true;
}
return false;