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Implement OpenXR Foveated rendering support

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This commit is contained in:
Bastiaan Olij 2023-08-21 17:45:28 +10:00
parent df0a822323
commit d7d334158a
15 changed files with 675 additions and 74 deletions
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84
modules/openxr/openxr_api.cpp
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@ -43,30 +43,7 @@
#include "editor/editor_settings.h"
#endif
// We need to have all the graphics API defines before the Vulkan or OpenGL
// extensions are included, otherwise we'll only get one graphics API.
#ifdef VULKAN_ENABLED
#define XR_USE_GRAPHICS_API_VULKAN
#endif
#if defined(GLES3_ENABLED) && !defined(MACOS_ENABLED)
#ifdef ANDROID_ENABLED
#define XR_USE_GRAPHICS_API_OPENGL_ES
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES3/gl3.h>
#include <GLES3/gl3ext.h>
#else
#define XR_USE_GRAPHICS_API_OPENGL
#endif // ANDROID_ENABLED
#ifdef X11_ENABLED
#define GL_GLEXT_PROTOTYPES 1
#define GL3_PROTOTYPES 1
#include "thirdparty/glad/glad/gl.h"
#include "thirdparty/glad/glad/glx.h"
#include <X11/Xlib.h>
#endif // X11_ENABLED
#endif // GLES_ENABLED
#include "openxr_platform_inc.h"
#ifdef VULKAN_ENABLED
#include "extensions/openxr_vulkan_extension.h"
@ -78,7 +55,9 @@
#include "extensions/openxr_composition_layer_depth_extension.h"
#include "extensions/openxr_fb_display_refresh_rate_extension.h"
#include "extensions/openxr_fb_foveation_extension.h"
#include "extensions/openxr_fb_passthrough_extension_wrapper.h"
#include "extensions/openxr_fb_update_swapchain_extension.h"
#ifdef ANDROID_ENABLED
#define OPENXR_LOADER_NAME "libopenxr_loader.so"
@ -1340,6 +1319,10 @@ bool OpenXRAPI::initialize(const String &p_rendering_driver) {
ERR_FAIL_V_MSG(false, "OpenXR: Unsupported rendering device.");
}
// Also register our rendering extensions
register_extension_wrapper(memnew(OpenXRFBUpdateSwapchainExtension(p_rendering_driver)));
register_extension_wrapper(memnew(OpenXRFBFoveationExtension(p_rendering_driver)));
// initialize
for (OpenXRExtensionWrapper *wrapper : registered_extension_wrappers) {
wrapper->on_before_instance_created();
@ -1859,6 +1842,10 @@ bool OpenXRAPI::pre_draw_viewport(RID p_render_target) {
return true;
}
XrSwapchain OpenXRAPI::get_color_swapchain() {
return swapchains[OPENXR_SWAPCHAIN_COLOR].swapchain;
}
RID OpenXRAPI::get_color_texture() {
if (swapchains[OPENXR_SWAPCHAIN_COLOR].image_acquired) {
return graphics_extension->get_texture(swapchains[OPENXR_SWAPCHAIN_COLOR].swapchain_graphics_data, swapchains[OPENXR_SWAPCHAIN_COLOR].image_index);
@ -2010,6 +1997,55 @@ void OpenXRAPI::set_render_target_size_multiplier(double multiplier) {
render_target_size_multiplier = multiplier;
}
bool OpenXRAPI::is_foveation_supported() const {
OpenXRFBFoveationExtension *fov_ext = OpenXRFBFoveationExtension::get_singleton();
return fov_ext != nullptr && fov_ext->is_enabled();
}
int OpenXRAPI::get_foveation_level() const {
OpenXRFBFoveationExtension *fov_ext = OpenXRFBFoveationExtension::get_singleton();
if (fov_ext != nullptr && fov_ext->is_enabled()) {
switch (fov_ext->get_foveation_level()) {
case XR_FOVEATION_LEVEL_NONE_FB:
return 0;
case XR_FOVEATION_LEVEL_LOW_FB:
return 1;
case XR_FOVEATION_LEVEL_MEDIUM_FB:
return 2;
case XR_FOVEATION_LEVEL_HIGH_FB:
return 3;
default:
return 0;
}
}
return 0;
}
void OpenXRAPI::set_foveation_level(int p_foveation_level) {
ERR_FAIL_UNSIGNED_INDEX(p_foveation_level, 4);
OpenXRFBFoveationExtension *fov_ext = OpenXRFBFoveationExtension::get_singleton();
if (fov_ext != nullptr && fov_ext->is_enabled()) {
XrFoveationLevelFB levels[] = { XR_FOVEATION_LEVEL_NONE_FB, XR_FOVEATION_LEVEL_LOW_FB, XR_FOVEATION_LEVEL_MEDIUM_FB, XR_FOVEATION_LEVEL_HIGH_FB };
fov_ext->set_foveation_level(levels[p_foveation_level]);
}
}
bool OpenXRAPI::get_foveation_dynamic() const {
OpenXRFBFoveationExtension *fov_ext = OpenXRFBFoveationExtension::get_singleton();
if (fov_ext != nullptr && fov_ext->is_enabled()) {
return fov_ext->get_foveation_dynamic() == XR_FOVEATION_DYNAMIC_LEVEL_ENABLED_FB;
}
return false;
}
void OpenXRAPI::set_foveation_dynamic(bool p_foveation_dynamic) {
OpenXRFBFoveationExtension *fov_ext = OpenXRFBFoveationExtension::get_singleton();
if (fov_ext != nullptr && fov_ext->is_enabled()) {
fov_ext->set_foveation_dynamic(p_foveation_dynamic ? XR_FOVEATION_DYNAMIC_LEVEL_ENABLED_FB : XR_FOVEATION_DYNAMIC_DISABLED_FB);
}
}
OpenXRAPI::OpenXRAPI() {
// OpenXRAPI is only constructed if OpenXR is enabled.
singleton = this;