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This change adds support for running XR projects built with the `d3d12` rendering backend. The XR backend hooks into the setup for the D3D12 render context in order to use the desired device and command queue for submission to OpenXR. The XR backend takes care of importing the D3D12 swapchain images into the render context. As part of this process, three issues are addressed: - Ensuring that resource state transitions are only done on textures that require them. - Enabling view instancing in the PSOs for multiview render passes. - Addressing a bug in the D3D12 runtime where PSO creation may fail when front face detection is used. Please refer to #86283 for additional discussions on the implementation details.
85 lines
4.6 KiB
C++
85 lines
4.6 KiB
C++
/**************************************************************************/
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/* openxr_d3d12_extension.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#pragma once
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#ifdef D3D12_ENABLED
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#include "../../openxr_api.h"
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#include "../../util.h"
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#include "../openxr_extension_wrapper.h"
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#include "core/templates/vector.h"
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#include "drivers/d3d12/d3d12_hooks.h"
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// Always include this as late as possible.
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#include "../../openxr_platform_inc.h"
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class OpenXRD3D12Extension : public OpenXRGraphicsExtensionWrapper, D3D12Hooks {
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public:
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virtual HashMap<String, bool *> get_requested_extensions() override;
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virtual void on_instance_created(const XrInstance p_instance) override;
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virtual void *set_session_create_and_get_next_pointer(void *p_next_pointer) override;
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virtual D3D_FEATURE_LEVEL get_feature_level() const override final;
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virtual LUID get_adapter_luid() const override final;
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virtual void set_device(ID3D12Device *p_device) override final;
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virtual void set_command_queue(ID3D12CommandQueue *p_queue) override final;
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virtual void cleanup_device() override final;
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virtual void get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) override;
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virtual void get_usable_depth_formats(Vector<int64_t> &p_usable_swap_chains) override;
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virtual String get_swapchain_format_name(int64_t p_swapchain_format) const override;
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virtual bool get_swapchain_image_data(XrSwapchain p_swapchain, int64_t p_swapchain_format, uint32_t p_width, uint32_t p_height, uint32_t p_sample_count, uint32_t p_array_size, void **r_swapchain_graphics_data) override;
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virtual void cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) override;
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virtual bool create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, Projection &r_camera_matrix) override;
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virtual RID get_texture(void *p_swapchain_graphics_data, int p_image_index) override;
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virtual RID get_density_map(void *p_swapchain_graphics_data, int p_image_index) override { return RID(); }
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private:
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static OpenXRD3D12Extension *singleton;
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static XrGraphicsBindingD3D12KHR graphics_binding_d3d12;
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struct SwapchainGraphicsData {
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bool is_multiview;
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Vector<RID> texture_rids;
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};
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EXT_PROTO_XRRESULT_FUNC3(xrGetD3D12GraphicsRequirementsKHR, (XrInstance), p_instance, (XrSystemId), p_system_id, (XrGraphicsRequirementsD3D12KHR *), p_graphics_requirements)
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EXT_PROTO_XRRESULT_FUNC4(xrEnumerateSwapchainImages, (XrSwapchain), p_swapchain, (uint32_t), p_image_capacity_input, (uint32_t *), p_image_count_output, (XrSwapchainImageBaseHeader *), p_images)
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ComPtr<ID3D12Device> graphics_device;
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ComPtr<ID3D12CommandQueue> command_queue;
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};
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#endif // D3D12_ENABLED
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