439 lines
18 KiB
C++
439 lines
18 KiB
C++
/**************************************************************************/
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/* openxr_opengl_extension.cpp */
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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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#include "openxr_opengl_extension.h"
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#ifdef GLES3_ENABLED
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#include "../../openxr_util.h"
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#include "drivers/gles3/effects/copy_effects.h"
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#include "drivers/gles3/storage/texture_storage.h"
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#include "servers/rendering/rendering_server_globals.h"
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#include "servers/rendering_server.h"
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// OpenXR requires us to submit sRGB textures so that it recognizes the content
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// as being in sRGB color space. We do fall back on "normal" textures but this
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// will likely result in incorrect colors as OpenXR will double the sRGB conversion.
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// All major XR runtimes support sRGB textures.
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// In OpenGL output of the fragment shader is assumed to be in the color space of
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// the developers choice, however a linear to sRGB HW conversion can be enabled
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// through enabling GL_FRAMEBUFFER_SRGB if an sRGB color attachment is used.
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// This is a global setting.
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// See: https://www.khronos.org/opengl/wiki/Framebuffer
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// In OpenGLES output of the fragment shader is assumed to be in linear color space
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// and will be converted by default to sRGB if an sRGB color attachment is used.
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// The extension GL_EXT_sRGB_write_control was introduced to enable turning this
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// feature off.
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// See: https://registry.khronos.org/OpenGL/extensions/EXT/EXT_sRGB_write_control.txt
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HashMap<String, bool *> OpenXROpenGLExtension::get_requested_extensions() {
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HashMap<String, bool *> request_extensions;
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#ifdef ANDROID_ENABLED
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request_extensions[XR_KHR_OPENGL_ES_ENABLE_EXTENSION_NAME] = nullptr;
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#else
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request_extensions[XR_KHR_OPENGL_ENABLE_EXTENSION_NAME] = nullptr;
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#endif
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return request_extensions;
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}
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void OpenXROpenGLExtension::on_instance_created(const XrInstance p_instance) {
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// Obtain pointers to functions we're accessing here.
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ERR_FAIL_NULL(OpenXRAPI::get_singleton());
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#ifdef ANDROID_ENABLED
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EXT_INIT_XR_FUNC(xrGetOpenGLESGraphicsRequirementsKHR);
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#else
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EXT_INIT_XR_FUNC(xrGetOpenGLGraphicsRequirementsKHR);
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#endif
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EXT_INIT_XR_FUNC(xrEnumerateSwapchainImages);
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}
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bool OpenXROpenGLExtension::check_graphics_api_support(XrVersion p_desired_version) {
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ERR_FAIL_NULL_V(OpenXRAPI::get_singleton(), false);
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XrSystemId system_id = OpenXRAPI::get_singleton()->get_system_id();
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XrInstance instance = OpenXRAPI::get_singleton()->get_instance();
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#ifdef ANDROID_ENABLED
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XrGraphicsRequirementsOpenGLESKHR opengl_requirements;
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opengl_requirements.type = XR_TYPE_GRAPHICS_REQUIREMENTS_OPENGL_ES_KHR;
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opengl_requirements.next = nullptr;
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XrResult result = xrGetOpenGLESGraphicsRequirementsKHR(instance, system_id, &opengl_requirements);
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if (!OpenXRAPI::get_singleton()->xr_result(result, "Failed to get OpenGL graphics requirements!")) {
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return false;
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}
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#else
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XrGraphicsRequirementsOpenGLKHR opengl_requirements;
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opengl_requirements.type = XR_TYPE_GRAPHICS_REQUIREMENTS_OPENGL_KHR;
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opengl_requirements.next = nullptr;
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XrResult result = xrGetOpenGLGraphicsRequirementsKHR(instance, system_id, &opengl_requirements);
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if (!OpenXRAPI::get_singleton()->xr_result(result, "Failed to get OpenGL graphics requirements!")) {
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return false;
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}
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#endif
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if (p_desired_version < opengl_requirements.minApiVersionSupported) {
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print_line("OpenXR: Requested OpenGL version does not meet the minimum version this runtime supports.");
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print_line("- desired_version ", OpenXRUtil::make_xr_version_string(p_desired_version));
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print_line("- minApiVersionSupported ", OpenXRUtil::make_xr_version_string(opengl_requirements.minApiVersionSupported));
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print_line("- maxApiVersionSupported ", OpenXRUtil::make_xr_version_string(opengl_requirements.maxApiVersionSupported));
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return false;
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}
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if (p_desired_version > opengl_requirements.maxApiVersionSupported) {
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print_line("OpenXR: Requested OpenGL version exceeds the maximum version this runtime has been tested on and is known to support.");
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print_line("- desired_version ", OpenXRUtil::make_xr_version_string(p_desired_version));
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print_line("- minApiVersionSupported ", OpenXRUtil::make_xr_version_string(opengl_requirements.minApiVersionSupported));
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print_line("- maxApiVersionSupported ", OpenXRUtil::make_xr_version_string(opengl_requirements.maxApiVersionSupported));
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}
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return true;
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}
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#ifdef WIN32
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XrGraphicsBindingOpenGLWin32KHR OpenXROpenGLExtension::graphics_binding_gl;
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#elif defined(ANDROID_ENABLED)
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XrGraphicsBindingOpenGLESAndroidKHR OpenXROpenGLExtension::graphics_binding_gl;
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#elif defined(X11_ENABLED)
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XrGraphicsBindingOpenGLXlibKHR OpenXROpenGLExtension::graphics_binding_gl;
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#endif
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void *OpenXROpenGLExtension::set_session_create_and_get_next_pointer(void *p_next_pointer) {
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XrVersion desired_version = XR_MAKE_VERSION(3, 3, 0);
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if (!check_graphics_api_support(desired_version)) {
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print_line("OpenXR: Trying to initialize with OpenGL anyway...");
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//return p_next_pointer;
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}
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DisplayServer *display_server = DisplayServer::get_singleton();
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#ifdef WAYLAND_ENABLED
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ERR_FAIL_COND_V_MSG(display_server->get_name() == "Wayland", p_next_pointer, "OpenXR is not yet supported on OpenGL Wayland.");
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#endif
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#ifdef WIN32
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graphics_binding_gl.type = XR_TYPE_GRAPHICS_BINDING_OPENGL_WIN32_KHR,
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graphics_binding_gl.next = p_next_pointer;
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graphics_binding_gl.hDC = (HDC)display_server->window_get_native_handle(DisplayServer::WINDOW_VIEW);
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graphics_binding_gl.hGLRC = (HGLRC)display_server->window_get_native_handle(DisplayServer::OPENGL_CONTEXT);
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#elif defined(ANDROID_ENABLED)
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graphics_binding_gl.type = XR_TYPE_GRAPHICS_BINDING_OPENGL_ES_ANDROID_KHR;
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graphics_binding_gl.next = p_next_pointer;
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graphics_binding_gl.display = (void *)display_server->window_get_native_handle(DisplayServer::DISPLAY_HANDLE);
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graphics_binding_gl.config = (EGLConfig)0; // https://github.com/KhronosGroup/OpenXR-SDK-Source/blob/master/src/tests/hello_xr/graphicsplugin_opengles.cpp#L122
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graphics_binding_gl.context = (void *)display_server->window_get_native_handle(DisplayServer::OPENGL_CONTEXT);
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#elif defined(X11_ENABLED)
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graphics_binding_gl.type = XR_TYPE_GRAPHICS_BINDING_OPENGL_XLIB_KHR;
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graphics_binding_gl.next = p_next_pointer;
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void *display_handle = (void *)display_server->window_get_native_handle(DisplayServer::DISPLAY_HANDLE);
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void *glxcontext_handle = (void *)display_server->window_get_native_handle(DisplayServer::OPENGL_CONTEXT);
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void *glxdrawable_handle = (void *)display_server->window_get_native_handle(DisplayServer::WINDOW_HANDLE);
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graphics_binding_gl.xDisplay = (Display *)display_handle;
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graphics_binding_gl.glxContext = (GLXContext)glxcontext_handle;
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graphics_binding_gl.glxDrawable = (GLXDrawable)glxdrawable_handle;
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// spec says to use proper values but runtimes don't care
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graphics_binding_gl.visualid = 0;
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graphics_binding_gl.glxFBConfig = 0;
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#endif
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return &graphics_binding_gl;
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}
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void OpenXROpenGLExtension::get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) {
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p_usable_swap_chains.push_back(GL_SRGB8_ALPHA8);
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p_usable_swap_chains.push_back(GL_RGBA8);
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}
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void OpenXROpenGLExtension::get_usable_depth_formats(Vector<int64_t> &p_usable_depth_formats) {
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p_usable_depth_formats.push_back(GL_DEPTH_COMPONENT32F);
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p_usable_depth_formats.push_back(GL_DEPTH24_STENCIL8);
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p_usable_depth_formats.push_back(GL_DEPTH32F_STENCIL8);
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p_usable_depth_formats.push_back(GL_DEPTH_COMPONENT24);
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}
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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) {
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GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
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ERR_FAIL_NULL_V(texture_storage, false);
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uint32_t swapchain_length;
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XrResult result = xrEnumerateSwapchainImages(p_swapchain, 0, &swapchain_length, nullptr);
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if (XR_FAILED(result)) {
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print_line("OpenXR: Failed to get swapchaim image count [", OpenXRAPI::get_singleton()->get_error_string(result), "]");
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return false;
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}
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#ifdef ANDROID_ENABLED
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XrSwapchainImageOpenGLESKHR *images = (XrSwapchainImageOpenGLESKHR *)memalloc(sizeof(XrSwapchainImageOpenGLESKHR) * swapchain_length);
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#else
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XrSwapchainImageOpenGLKHR *images = (XrSwapchainImageOpenGLKHR *)memalloc(sizeof(XrSwapchainImageOpenGLKHR) * swapchain_length);
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#endif
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ERR_FAIL_NULL_V_MSG(images, false, "OpenXR Couldn't allocate memory for swap chain image");
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for (uint64_t i = 0; i < swapchain_length; i++) {
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#ifdef ANDROID_ENABLED
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images[i].type = XR_TYPE_SWAPCHAIN_IMAGE_OPENGL_ES_KHR;
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#else
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images[i].type = XR_TYPE_SWAPCHAIN_IMAGE_OPENGL_KHR;
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#endif
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images[i].next = nullptr;
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images[i].image = 0;
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}
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result = xrEnumerateSwapchainImages(p_swapchain, swapchain_length, &swapchain_length, (XrSwapchainImageBaseHeader *)images);
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if (XR_FAILED(result)) {
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print_line("OpenXR: Failed to get swapchaim images [", OpenXRAPI::get_singleton()->get_error_string(result), "]");
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memfree(images);
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return false;
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}
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SwapchainGraphicsData *data = memnew(SwapchainGraphicsData);
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if (data == nullptr) {
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print_line("OpenXR: Failed to allocate memory for swapchain data");
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memfree(images);
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return false;
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}
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*r_swapchain_graphics_data = data;
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data->is_multiview = (p_array_size > 1);
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Image::Format format = Image::FORMAT_RGBA8;
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Vector<RID> texture_rids;
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for (uint64_t i = 0; i < swapchain_length; i++) {
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RID texture_rid = texture_storage->texture_create_external(
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p_array_size == 1 ? GLES3::Texture::TYPE_2D : GLES3::Texture::TYPE_LAYERED,
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format,
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images[i].image,
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p_width,
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p_height,
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1,
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p_array_size);
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texture_rids.push_back(texture_rid);
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}
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data->texture_rids = texture_rids;
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memfree(images);
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return true;
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}
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bool OpenXROpenGLExtension::create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, Projection &r_camera_matrix) {
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OpenXRUtil::XrMatrix4x4f matrix;
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OpenXRUtil::XrMatrix4x4f_CreateProjectionFov(&matrix, OpenXRUtil::GRAPHICS_OPENGL, p_fov, (float)p_z_near, (float)p_z_far);
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for (int j = 0; j < 4; j++) {
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for (int i = 0; i < 4; i++) {
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r_camera_matrix.columns[j][i] = matrix.m[j * 4 + i];
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}
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}
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return true;
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}
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RID OpenXROpenGLExtension::get_texture(void *p_swapchain_graphics_data, int p_image_index) {
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SwapchainGraphicsData *data = (SwapchainGraphicsData *)p_swapchain_graphics_data;
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ERR_FAIL_NULL_V(data, RID());
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ERR_FAIL_INDEX_V(p_image_index, data->texture_rids.size(), RID());
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return data->texture_rids[p_image_index];
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}
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void OpenXROpenGLExtension::cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) {
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if (*p_swapchain_graphics_data == nullptr) {
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return;
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}
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GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
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ERR_FAIL_NULL(texture_storage);
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SwapchainGraphicsData *data = (SwapchainGraphicsData *)*p_swapchain_graphics_data;
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for (int i = 0; i < data->texture_rids.size(); i++) {
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texture_storage->texture_free(data->texture_rids[i]);
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}
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data->texture_rids.clear();
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memdelete(data);
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*p_swapchain_graphics_data = nullptr;
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}
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#define ENUM_TO_STRING_CASE(e) \
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case e: { \
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return String(#e); \
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} break;
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String OpenXROpenGLExtension::get_swapchain_format_name(int64_t p_swapchain_format) const {
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// These are somewhat different per platform, will need to weed some stuff out...
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switch (p_swapchain_format) {
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#ifdef ANDROID_ENABLED
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// using definitions from GLES3/gl3.h
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ENUM_TO_STRING_CASE(GL_RGBA4)
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ENUM_TO_STRING_CASE(GL_RGB5_A1)
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ENUM_TO_STRING_CASE(GL_RGB565)
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ENUM_TO_STRING_CASE(GL_RGB8)
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ENUM_TO_STRING_CASE(GL_RGBA8)
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ENUM_TO_STRING_CASE(GL_RGB10_A2)
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ENUM_TO_STRING_CASE(GL_RGBA32F)
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ENUM_TO_STRING_CASE(GL_RGB32F)
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ENUM_TO_STRING_CASE(GL_RGBA16F)
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ENUM_TO_STRING_CASE(GL_RGB16F)
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ENUM_TO_STRING_CASE(GL_R11F_G11F_B10F)
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ENUM_TO_STRING_CASE(GL_UNSIGNED_INT_10F_11F_11F_REV)
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ENUM_TO_STRING_CASE(GL_RGB9_E5)
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ENUM_TO_STRING_CASE(GL_UNSIGNED_INT_5_9_9_9_REV)
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ENUM_TO_STRING_CASE(GL_RGBA32UI)
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ENUM_TO_STRING_CASE(GL_RGB32UI)
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ENUM_TO_STRING_CASE(GL_RGBA16UI)
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ENUM_TO_STRING_CASE(GL_RGB16UI)
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ENUM_TO_STRING_CASE(GL_RGBA8UI)
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ENUM_TO_STRING_CASE(GL_RGB8UI)
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ENUM_TO_STRING_CASE(GL_RGBA32I)
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ENUM_TO_STRING_CASE(GL_RGB32I)
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ENUM_TO_STRING_CASE(GL_RGBA16I)
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ENUM_TO_STRING_CASE(GL_RGB16I)
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ENUM_TO_STRING_CASE(GL_RGBA8I)
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ENUM_TO_STRING_CASE(GL_RGB8I)
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ENUM_TO_STRING_CASE(GL_RG)
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ENUM_TO_STRING_CASE(GL_RG_INTEGER)
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ENUM_TO_STRING_CASE(GL_R8)
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ENUM_TO_STRING_CASE(GL_RG8)
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ENUM_TO_STRING_CASE(GL_R16F)
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ENUM_TO_STRING_CASE(GL_R32F)
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ENUM_TO_STRING_CASE(GL_RG16F)
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ENUM_TO_STRING_CASE(GL_RG32F)
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ENUM_TO_STRING_CASE(GL_R8I)
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ENUM_TO_STRING_CASE(GL_R8UI)
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ENUM_TO_STRING_CASE(GL_R16I)
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ENUM_TO_STRING_CASE(GL_R16UI)
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ENUM_TO_STRING_CASE(GL_R32I)
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ENUM_TO_STRING_CASE(GL_R32UI)
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ENUM_TO_STRING_CASE(GL_RG8I)
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ENUM_TO_STRING_CASE(GL_RG8UI)
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ENUM_TO_STRING_CASE(GL_RG16I)
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ENUM_TO_STRING_CASE(GL_RG16UI)
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ENUM_TO_STRING_CASE(GL_RG32I)
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ENUM_TO_STRING_CASE(GL_RG32UI)
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ENUM_TO_STRING_CASE(GL_R8_SNORM)
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ENUM_TO_STRING_CASE(GL_RG8_SNORM)
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ENUM_TO_STRING_CASE(GL_RGB8_SNORM)
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ENUM_TO_STRING_CASE(GL_RGBA8_SNORM)
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ENUM_TO_STRING_CASE(GL_RGB10_A2UI)
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ENUM_TO_STRING_CASE(GL_SRGB)
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ENUM_TO_STRING_CASE(GL_SRGB8)
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ENUM_TO_STRING_CASE(GL_SRGB8_ALPHA8)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_R11_EAC)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_SIGNED_R11_EAC)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_RG11_EAC)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_SIGNED_RG11_EAC)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_RGB8_ETC2)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_SRGB8_ETC2)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_RGBA8_ETC2_EAC)
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ENUM_TO_STRING_CASE(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC)
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ENUM_TO_STRING_CASE(GL_DEPTH_COMPONENT16)
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ENUM_TO_STRING_CASE(GL_DEPTH_COMPONENT24)
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ENUM_TO_STRING_CASE(GL_DEPTH24_STENCIL8)
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#else
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// using definitions from GLAD
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ENUM_TO_STRING_CASE(GL_R8_SNORM)
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ENUM_TO_STRING_CASE(GL_RG8_SNORM)
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ENUM_TO_STRING_CASE(GL_RGB8_SNORM)
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ENUM_TO_STRING_CASE(GL_RGBA8_SNORM)
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ENUM_TO_STRING_CASE(GL_R16_SNORM)
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ENUM_TO_STRING_CASE(GL_RG16_SNORM)
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ENUM_TO_STRING_CASE(GL_RGB16_SNORM)
|
|
ENUM_TO_STRING_CASE(GL_RGBA16_SNORM)
|
|
ENUM_TO_STRING_CASE(GL_RGB4)
|
|
ENUM_TO_STRING_CASE(GL_RGB5)
|
|
ENUM_TO_STRING_CASE(GL_RGB8)
|
|
ENUM_TO_STRING_CASE(GL_RGB10)
|
|
ENUM_TO_STRING_CASE(GL_RGB12)
|
|
ENUM_TO_STRING_CASE(GL_RGB16)
|
|
ENUM_TO_STRING_CASE(GL_RGBA2)
|
|
ENUM_TO_STRING_CASE(GL_RGBA4)
|
|
ENUM_TO_STRING_CASE(GL_RGB5_A1)
|
|
ENUM_TO_STRING_CASE(GL_RGBA8)
|
|
ENUM_TO_STRING_CASE(GL_RGB10_A2)
|
|
ENUM_TO_STRING_CASE(GL_RGBA12)
|
|
ENUM_TO_STRING_CASE(GL_RGBA16)
|
|
ENUM_TO_STRING_CASE(GL_RGBA32F)
|
|
ENUM_TO_STRING_CASE(GL_RGB32F)
|
|
ENUM_TO_STRING_CASE(GL_RGBA16F)
|
|
ENUM_TO_STRING_CASE(GL_RGB16F)
|
|
ENUM_TO_STRING_CASE(GL_RGBA32UI)
|
|
ENUM_TO_STRING_CASE(GL_RGB32UI)
|
|
ENUM_TO_STRING_CASE(GL_RGBA16UI)
|
|
ENUM_TO_STRING_CASE(GL_RGB16UI)
|
|
ENUM_TO_STRING_CASE(GL_RGBA8UI)
|
|
ENUM_TO_STRING_CASE(GL_RGB8UI)
|
|
ENUM_TO_STRING_CASE(GL_RGBA32I)
|
|
ENUM_TO_STRING_CASE(GL_RGB32I)
|
|
ENUM_TO_STRING_CASE(GL_RGBA16I)
|
|
ENUM_TO_STRING_CASE(GL_RGB16I)
|
|
ENUM_TO_STRING_CASE(GL_RGBA8I)
|
|
ENUM_TO_STRING_CASE(GL_RGB8I)
|
|
ENUM_TO_STRING_CASE(GL_RGB10_A2UI)
|
|
ENUM_TO_STRING_CASE(GL_SRGB)
|
|
ENUM_TO_STRING_CASE(GL_SRGB8)
|
|
ENUM_TO_STRING_CASE(GL_SRGB_ALPHA)
|
|
ENUM_TO_STRING_CASE(GL_SRGB8_ALPHA8)
|
|
ENUM_TO_STRING_CASE(GL_DEPTH_COMPONENT16)
|
|
ENUM_TO_STRING_CASE(GL_DEPTH_COMPONENT24)
|
|
ENUM_TO_STRING_CASE(GL_DEPTH_COMPONENT32)
|
|
ENUM_TO_STRING_CASE(GL_DEPTH24_STENCIL8)
|
|
ENUM_TO_STRING_CASE(GL_R11F_G11F_B10F)
|
|
ENUM_TO_STRING_CASE(GL_DEPTH_COMPONENT32F)
|
|
ENUM_TO_STRING_CASE(GL_DEPTH32F_STENCIL8)
|
|
#endif
|
|
default: {
|
|
return String("Swapchain format 0x") + String::num_int64(p_swapchain_format, 16);
|
|
} break;
|
|
}
|
|
}
|
|
|
|
#endif // GLES3_ENABLED
|