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Diffstat (limited to 'modules/openxr/extensions/openxr_opengl_extension.h')
| -rw-r--r-- | modules/openxr/extensions/openxr_opengl_extension.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/modules/openxr/extensions/openxr_opengl_extension.h b/modules/openxr/extensions/openxr_opengl_extension.h new file mode 100644 index 0000000000..b666653c8e --- /dev/null +++ b/modules/openxr/extensions/openxr_opengl_extension.h @@ -0,0 +1,120 @@ +/*************************************************************************/ +/* openxr_opengl_extension.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#ifndef OPENXR_OPENGL_EXTENSION_H +#define OPENXR_OPENGL_EXTENSION_H + +#ifdef GLES3_ENABLED + +#include "core/templates/vector.h" +#include "openxr_extension_wrapper.h" + +#include "../openxr_api.h" +#include "../util.h" + +#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 + +#ifdef WINDOWS_ENABLED +// Including windows.h here is absolutely evil, we shouldn't be doing this outside of platform +// however due to the way the openxr headers are put together, we have no choice. +#include <windows.h> +#endif + +#ifdef X11_ENABLED +#include OPENGL_INCLUDE_H +#define GL_GLEXT_PROTOTYPES 1 +#define GL3_PROTOTYPES 1 +#include <GL/gl.h> +#include <GL/glext.h> +#include <GL/glx.h> +#include <X11/Xlib.h> +#endif + +#ifdef ANDROID_ENABLED +// The jobject type from jni.h is used by openxr_platform.h on Android. +#include <jni.h> +#endif + +// include platform dependent structs +#include <openxr/openxr_platform.h> + +class OpenXROpenGLExtension : public OpenXRGraphicsExtensionWrapper { +public: + OpenXROpenGLExtension(OpenXRAPI *p_openxr_api); + virtual ~OpenXROpenGLExtension() override; + + virtual void on_instance_created(const XrInstance p_instance) override; + virtual void *set_session_create_and_get_next_pointer(void *p_next_pointer) override; + + virtual void get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) override; + virtual void get_usable_depth_formats(Vector<int64_t> &p_usable_swap_chains) override; + virtual String get_swapchain_format_name(int64_t p_swapchain_format) const override; + 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; + virtual void cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) override; + virtual bool create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, Projection &r_camera_matrix) override; + virtual RID get_texture(void *p_swapchain_graphics_data, int p_image_index) override; + +private: + static OpenXROpenGLExtension *singleton; + +#ifdef WIN32 + static XrGraphicsBindingOpenGLWin32KHR graphics_binding_gl; +#elif ANDROID_ENABLED + static XrGraphicsBindingOpenGLESAndroidKHR graphics_binding_gl; +#else + static XrGraphicsBindingOpenGLXlibKHR graphics_binding_gl; +#endif + + struct SwapchainGraphicsData { + bool is_multiview; + Vector<RID> texture_rids; + }; + + bool check_graphics_api_support(XrVersion p_desired_version); + +#ifdef ANDROID_ENABLED + EXT_PROTO_XRRESULT_FUNC3(xrGetOpenGLESGraphicsRequirementsKHR, (XrInstance), p_instance, (XrSystemId), p_system_id, (XrGraphicsRequirementsOpenGLESKHR *), p_graphics_requirements) +#else + EXT_PROTO_XRRESULT_FUNC3(xrGetOpenGLGraphicsRequirementsKHR, (XrInstance), p_instance, (XrSystemId), p_system_id, (XrGraphicsRequirementsOpenGLKHR *), p_graphics_requirements) +#endif + EXT_PROTO_XRRESULT_FUNC4(xrEnumerateSwapchainImages, (XrSwapchain), p_swapchain, (uint32_t), p_image_capacity_input, (uint32_t *), p_image_count_output, (XrSwapchainImageBaseHeader *), p_images) +}; + +#endif // GLES3_ENABLED + +#endif // OPENXR_OPENGL_EXTENSION_H |