openxr_opengl_extension.cpp | Explore in Territory

/**************************************************************************/
/*  openxr_opengl_extension.cpp                                           */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "openxr_opengl_extension.h"

#ifdef GLES3_ENABLED

#include "../../openxr_util.h"

#include "drivers/gles3/effects/copy_effects.h"
#include "drivers/gles3/storage/texture_storage.h"
#include "servers/rendering/rendering_server_globals.h"
#include "servers/rendering_server.h"

// OpenXR requires us to submit sRGB textures so that it recognizes the content
// as being in sRGB color space. We do fall back on "normal" textures but this
// will likely result in incorrect colors as OpenXR will double the sRGB conversion.
// All major XR runtimes support sRGB textures.

// In OpenGL output of the fragment shader is assumed to be in the color space of
// the developers choice, however a linear to sRGB HW conversion can be enabled
// through enabling GL_FRAMEBUFFER_SRGB if an sRGB color attachment is used.
// This is a global setting.
// See: https://www.khronos.org/opengl/wiki/Framebuffer

// In OpenGLES output of the fragment shader is assumed to be in linear color space
// and will be converted by default to sRGB if an sRGB color attachment is used.
// The extension GL_EXT_sRGB_write_control was introduced to enable turning this
// feature off.
// See: https://registry.khronos.org/OpenGL/extensions/EXT/EXT_sRGB_write_control.txt

HashMap<String, bool *> OpenXROpenGLExtension::get_requested_extensions() { … }

void OpenXROpenGLExtension::on_instance_created(const XrInstance p_instance) { … }

bool OpenXROpenGLExtension::check_graphics_api_support(XrVersion p_desired_version) { … }

#ifdef WIN32
XrGraphicsBindingOpenGLWin32KHR OpenXROpenGLExtension::graphics_binding_gl;
#elif defined(ANDROID_ENABLED)
XrGraphicsBindingOpenGLESAndroidKHR OpenXROpenGLExtension::graphics_binding_gl;
#elif defined(LINUXBSD_ENABLED)
#ifdef X11_ENABLED
XrGraphicsBindingOpenGLXlibKHR OpenXROpenGLExtension::graphics_binding_gl;
#endif
#if defined(EGL_ENABLED) && defined(WAYLAND_ENABLED)
XrGraphicsBindingEGLMNDX OpenXROpenGLExtension::graphics_binding_egl;
#endif
#endif

void *OpenXROpenGLExtension::set_session_create_and_get_next_pointer(void *p_next_pointer) { … }

void OpenXROpenGLExtension::get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) { … }

void OpenXROpenGLExtension::get_usable_depth_formats(Vector<int64_t> &p_usable_depth_formats) { … }

bool OpenXROpenGLExtension::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) { … }

bool OpenXROpenGLExtension::create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, Projection &r_camera_matrix) { … }

RID OpenXROpenGLExtension::get_texture(void *p_swapchain_graphics_data, int p_image_index) { … }

void OpenXROpenGLExtension::cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) { … }

#define ENUM_TO_STRING_CASE(e) …

String OpenXROpenGLExtension::get_swapchain_format_name(int64_t p_swapchain_format) const { … }

#endif // GLES3_ENABLED
godot/modules/openxr/extensions/platform/openxr_opengl_extension.cpp
