| /* |
| * Simple DirectMedia Layer |
| * Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org> |
| * |
| * This software is provided 'as-is', without any express or implied |
| * warranty. In no event will the authors be held liable for any damages |
| * arising from the use of this software. |
| * |
| * Permission is granted to anyone to use this software for any purpose, |
| * including commercial applications, and to alter it and redistribute it |
| * freely, subject to the following restrictions: |
| * |
| * 1. The origin of this software must not be misrepresented; you must not |
| * claim that you wrote the original software. If you use this software |
| * in a product, an acknowledgment in the product documentation would be |
| * appreciated but is not required. |
| * 2. Altered source versions must be plainly marked as such, and must not be |
| * misrepresented as being the original software. |
| * 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../SDL_internal.h" |
| |
| #if SDL_VIDEO_OPENGL_EGL |
| |
| #if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT |
| #include "../core/windows/SDL_windows.h" |
| #endif |
| #if SDL_VIDEO_DRIVER_ANDROID |
| #include <android/native_window.h> |
| #include "../video/android/SDL_androidvideo.h" |
| #endif |
| #if SDL_VIDEO_DRIVER_RPI |
| #include <unistd.h> |
| #endif |
| |
| #include "SDL_sysvideo.h" |
| #include "SDL_egl_c.h" |
| #include "SDL_loadso.h" |
| #include "SDL_hints.h" |
| |
| #ifdef EGL_KHR_create_context |
| /* EGL_OPENGL_ES3_BIT_KHR was added in version 13 of the extension. */ |
| #ifndef EGL_OPENGL_ES3_BIT_KHR |
| #define EGL_OPENGL_ES3_BIT_KHR 0x00000040 |
| #endif |
| #endif /* EGL_KHR_create_context */ |
| |
| #ifndef EGL_EXT_pixel_format_float |
| #define EGL_EXT_pixel_format_float |
| #define EGL_COLOR_COMPONENT_TYPE_EXT 0x3339 |
| #define EGL_COLOR_COMPONENT_TYPE_FIXED_EXT 0x333A |
| #define EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT 0x333B |
| #endif |
| |
| #ifndef EGL_EXT_present_opaque |
| #define EGL_EXT_present_opaque 1 |
| #define EGL_PRESENT_OPAQUE_EXT 0x31DF |
| #endif /* EGL_EXT_present_opaque */ |
| |
| #if SDL_VIDEO_DRIVER_RPI |
| /* Raspbian places the OpenGL ES/EGL binaries in a non standard path */ |
| #define DEFAULT_EGL (vc4 ? "libEGL.so.1" : "libbrcmEGL.so") |
| #define DEFAULT_OGL_ES2 (vc4 ? "libGLESv2.so.2" : "libbrcmGLESv2.so") |
| #define ALT_EGL "libEGL.so" |
| #define ALT_OGL_ES2 "libGLESv2.so" |
| #define DEFAULT_OGL_ES_PVR (vc4 ? "libGLES_CM.so.1" : "libbrcmGLESv2.so") |
| #define DEFAULT_OGL_ES (vc4 ? "libGLESv1_CM.so.1" : "libbrcmGLESv2.so") |
| |
| #elif SDL_VIDEO_DRIVER_ANDROID || SDL_VIDEO_DRIVER_VIVANTE |
| /* Android */ |
| #define DEFAULT_EGL "libEGL.so" |
| #define DEFAULT_OGL_ES2 "libGLESv2.so" |
| #define DEFAULT_OGL_ES_PVR "libGLES_CM.so" |
| #define DEFAULT_OGL_ES "libGLESv1_CM.so" |
| |
| #elif SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT |
| /* EGL AND OpenGL ES support via ANGLE */ |
| #define DEFAULT_EGL "libEGL.dll" |
| #define DEFAULT_OGL_ES2 "libGLESv2.dll" |
| #define DEFAULT_OGL_ES_PVR "libGLES_CM.dll" |
| #define DEFAULT_OGL_ES "libGLESv1_CM.dll" |
| |
| #elif SDL_VIDEO_DRIVER_COCOA |
| /* EGL AND OpenGL ES support via ANGLE */ |
| #define DEFAULT_EGL "libEGL.dylib" |
| #define DEFAULT_OGL_ES2 "libGLESv2.dylib" |
| #define DEFAULT_OGL_ES_PVR "libGLES_CM.dylib" //??? |
| #define DEFAULT_OGL_ES "libGLESv1_CM.dylib" //??? |
| |
| #elif defined(__OpenBSD__) |
| /* OpenBSD */ |
| #define DEFAULT_OGL "libGL.so" |
| #define DEFAULT_EGL "libEGL.so" |
| #define DEFAULT_OGL_ES2 "libGLESv2.so" |
| #define DEFAULT_OGL_ES_PVR "libGLES_CM.so" |
| #define DEFAULT_OGL_ES "libGLESv1_CM.so" |
| |
| #else |
| /* Desktop Linux/Unix-like */ |
| #define DEFAULT_OGL "libGL.so.1" |
| #define DEFAULT_EGL "libEGL.so.1" |
| #define ALT_OGL "libOpenGL.so.0" |
| #define DEFAULT_OGL_ES2 "libGLESv2.so.2" |
| #define DEFAULT_OGL_ES_PVR "libGLES_CM.so.1" |
| #define DEFAULT_OGL_ES "libGLESv1_CM.so.1" |
| #endif /* SDL_VIDEO_DRIVER_RPI */ |
| |
| #if SDL_VIDEO_OPENGL && !SDL_VIDEO_VITA_PVR_OGL |
| #include "SDL_opengl.h" |
| #endif |
| |
| /** If we happen to not have this defined because of an older EGL version, just define it 0x0 |
| as eglGetPlatformDisplayEXT will most likely be NULL if this is missing |
| */ |
| #ifndef EGL_PLATFORM_DEVICE_EXT |
| #define EGL_PLATFORM_DEVICE_EXT 0x0 |
| #endif |
| |
| #if defined(SDL_VIDEO_STATIC_ANGLE) || defined(SDL_VIDEO_DRIVER_VITA) |
| #define LOAD_FUNC(NAME) \ |
| _this->egl_data->NAME = (void *)NAME; |
| #else |
| #define LOAD_FUNC(NAME) \ |
| _this->egl_data->NAME = SDL_LoadFunction(_this->egl_data->egl_dll_handle, #NAME); \ |
| if (!_this->egl_data->NAME) { \ |
| return SDL_SetError("Could not retrieve EGL function " #NAME); \ |
| } |
| #endif |
| |
| /* it is allowed to not have some of the EGL extensions on start - attempts to use them will fail later. */ |
| #define LOAD_FUNC_EGLEXT(NAME) \ |
| _this->egl_data->NAME = _this->egl_data->eglGetProcAddress(#NAME); |
| |
| static const char *SDL_EGL_GetErrorName(EGLint eglErrorCode) |
| { |
| #define SDL_EGL_ERROR_TRANSLATE(e) \ |
| case e: \ |
| return #e; |
| switch (eglErrorCode) { |
| SDL_EGL_ERROR_TRANSLATE(EGL_SUCCESS); |
| SDL_EGL_ERROR_TRANSLATE(EGL_NOT_INITIALIZED); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ACCESS); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ALLOC); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ATTRIBUTE); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CONTEXT); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CONFIG); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CURRENT_SURFACE); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_DISPLAY); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_SURFACE); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_MATCH); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_PARAMETER); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_NATIVE_PIXMAP); |
| SDL_EGL_ERROR_TRANSLATE(EGL_BAD_NATIVE_WINDOW); |
| SDL_EGL_ERROR_TRANSLATE(EGL_CONTEXT_LOST); |
| } |
| return ""; |
| } |
| |
| int SDL_EGL_SetErrorEx(const char *message, const char *eglFunctionName, EGLint eglErrorCode) |
| { |
| const char *errorText = SDL_EGL_GetErrorName(eglErrorCode); |
| char altErrorText[32]; |
| if (errorText[0] == '\0') { |
| /* An unknown-to-SDL error code was reported. Report its hexadecimal value, instead of its name. */ |
| (void)SDL_snprintf(altErrorText, SDL_arraysize(altErrorText), "0x%x", (unsigned int)eglErrorCode); |
| errorText = altErrorText; |
| } |
| return SDL_SetError("%s (call to %s failed, reporting an error of %s)", message, eglFunctionName, errorText); |
| } |
| |
| /* EGL implementation of SDL OpenGL ES support */ |
| |
| SDL_bool SDL_EGL_HasExtension(_THIS, SDL_EGL_ExtensionType type, const char *ext) |
| { |
| size_t ext_len; |
| const char *ext_override; |
| const char *egl_extstr; |
| const char *ext_start; |
| |
| /* Invalid extensions can be rejected early */ |
| if (ext == NULL || *ext == 0 || SDL_strchr(ext, ' ') != NULL) { |
| /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "SDL_EGL_HasExtension: Invalid EGL extension"); */ |
| return SDL_FALSE; |
| } |
| |
| /* Extensions can be masked with an environment variable. |
| * Unlike the OpenGL override, this will use the set bits of an integer |
| * to disable the extension. |
| * Bit Action |
| * 0 If set, the display extension is masked and not present to SDL. |
| * 1 If set, the client extension is masked and not present to SDL. |
| */ |
| ext_override = SDL_getenv(ext); |
| if (ext_override != NULL) { |
| int disable_ext = SDL_atoi(ext_override); |
| if (disable_ext & 0x01 && type == SDL_EGL_DISPLAY_EXTENSION) { |
| return SDL_FALSE; |
| } else if (disable_ext & 0x02 && type == SDL_EGL_CLIENT_EXTENSION) { |
| return SDL_FALSE; |
| } |
| } |
| |
| ext_len = SDL_strlen(ext); |
| switch (type) { |
| case SDL_EGL_DISPLAY_EXTENSION: |
| egl_extstr = _this->egl_data->eglQueryString(_this->egl_data->egl_display, EGL_EXTENSIONS); |
| break; |
| case SDL_EGL_CLIENT_EXTENSION: |
| /* EGL_EXT_client_extensions modifies eglQueryString to return client extensions |
| * if EGL_NO_DISPLAY is passed. Implementations without it are required to return NULL. |
| * This behavior is included in EGL 1.5. |
| */ |
| egl_extstr = _this->egl_data->eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS); |
| break; |
| default: |
| /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "SDL_EGL_HasExtension: Invalid extension type"); */ |
| return SDL_FALSE; |
| } |
| |
| if (egl_extstr != NULL) { |
| ext_start = egl_extstr; |
| |
| while (*ext_start) { |
| ext_start = SDL_strstr(ext_start, ext); |
| if (ext_start == NULL) { |
| return SDL_FALSE; |
| } |
| /* Check if the match is not just a substring of one of the extensions */ |
| if (ext_start == egl_extstr || *(ext_start - 1) == ' ') { |
| if (ext_start[ext_len] == ' ' || ext_start[ext_len] == 0) { |
| return SDL_TRUE; |
| } |
| } |
| /* If the search stopped in the middle of an extension, skip to the end of it */ |
| ext_start += ext_len; |
| while (*ext_start != ' ' && *ext_start != 0) { |
| ext_start++; |
| } |
| } |
| } |
| |
| return SDL_FALSE; |
| } |
| |
| void *SDL_EGL_GetProcAddress(_THIS, const char *proc) |
| { |
| void *retval = NULL; |
| if (_this->egl_data != NULL) { |
| const Uint32 eglver = (((Uint32)_this->egl_data->egl_version_major) << 16) | ((Uint32)_this->egl_data->egl_version_minor); |
| const SDL_bool is_egl_15_or_later = eglver >= ((((Uint32)1) << 16) | 5); |
| |
| /* EGL 1.5 can use eglGetProcAddress() for any symbol. 1.4 and earlier can't use it for core entry points. */ |
| if (retval == NULL && is_egl_15_or_later && _this->egl_data->eglGetProcAddress) { |
| retval = _this->egl_data->eglGetProcAddress(proc); |
| } |
| |
| #if !defined(__EMSCRIPTEN__) && !defined(SDL_VIDEO_DRIVER_VITA) /* LoadFunction isn't needed on Emscripten and will call dlsym(), causing other problems. */ |
| /* Try SDL_LoadFunction() first for EGL <= 1.4, or as a fallback for >= 1.5. */ |
| if (retval == NULL) { |
| retval = SDL_LoadFunction(_this->egl_data->opengl_dll_handle, proc); |
| } |
| #endif |
| |
| /* Try eglGetProcAddress if we're on <= 1.4 and still searching... */ |
| if (retval == NULL && !is_egl_15_or_later && _this->egl_data->eglGetProcAddress) { |
| retval = _this->egl_data->eglGetProcAddress(proc); |
| } |
| } |
| return retval; |
| } |
| |
| void SDL_EGL_UnloadLibrary(_THIS) |
| { |
| if (_this->egl_data) { |
| if (_this->egl_data->egl_display) { |
| _this->egl_data->eglTerminate(_this->egl_data->egl_display); |
| _this->egl_data->egl_display = NULL; |
| } |
| |
| if (_this->egl_data->egl_dll_handle) { |
| SDL_UnloadObject(_this->egl_data->egl_dll_handle); |
| _this->egl_data->egl_dll_handle = NULL; |
| } |
| if (_this->egl_data->opengl_dll_handle) { |
| SDL_UnloadObject(_this->egl_data->opengl_dll_handle); |
| _this->egl_data->opengl_dll_handle = NULL; |
| } |
| |
| SDL_free(_this->egl_data); |
| _this->egl_data = NULL; |
| } |
| } |
| |
| static int SDL_EGL_LoadLibraryInternal(_THIS, const char *egl_path) |
| { |
| void *egl_dll_handle = NULL, *opengl_dll_handle = NULL; |
| const char *path = NULL; |
| #if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT |
| const char *d3dcompiler; |
| #endif |
| #if SDL_VIDEO_DRIVER_RPI |
| SDL_bool vc4 = (0 == access("/sys/module/vc4/", F_OK)); |
| #endif |
| |
| #if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT |
| d3dcompiler = SDL_GetHint(SDL_HINT_VIDEO_WIN_D3DCOMPILER); |
| if (d3dcompiler) { |
| if (SDL_strcasecmp(d3dcompiler, "none") != 0) { |
| if (SDL_LoadObject(d3dcompiler) == NULL) { |
| SDL_ClearError(); |
| } |
| } |
| } else { |
| if (WIN_IsWindowsVistaOrGreater()) { |
| /* Try the newer d3d compilers first */ |
| const char *d3dcompiler_list[] = { |
| "d3dcompiler_47.dll", |
| "d3dcompiler_46.dll", |
| }; |
| int i; |
| |
| for (i = 0; i < SDL_arraysize(d3dcompiler_list); ++i) { |
| if (SDL_LoadObject(d3dcompiler_list[i]) != NULL) { |
| break; |
| } |
| SDL_ClearError(); |
| } |
| } else { |
| if (SDL_LoadObject("d3dcompiler_43.dll") == NULL) { |
| SDL_ClearError(); |
| } |
| } |
| } |
| #endif |
| |
| #if !defined(SDL_VIDEO_STATIC_ANGLE) && !defined(SDL_VIDEO_DRIVER_VITA) |
| /* A funny thing, loading EGL.so first does not work on the Raspberry, so we load libGL* first */ |
| path = SDL_getenv("SDL_VIDEO_GL_DRIVER"); |
| if (path != NULL) { |
| opengl_dll_handle = SDL_LoadObject(path); |
| } |
| |
| if (opengl_dll_handle == NULL) { |
| if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) { |
| if (_this->gl_config.major_version > 1) { |
| path = DEFAULT_OGL_ES2; |
| opengl_dll_handle = SDL_LoadObject(path); |
| #ifdef ALT_OGL_ES2 |
| if (opengl_dll_handle == NULL && !vc4) { |
| path = ALT_OGL_ES2; |
| opengl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| |
| } else { |
| path = DEFAULT_OGL_ES; |
| opengl_dll_handle = SDL_LoadObject(path); |
| if (opengl_dll_handle == NULL) { |
| path = DEFAULT_OGL_ES_PVR; |
| opengl_dll_handle = SDL_LoadObject(path); |
| } |
| #ifdef ALT_OGL_ES2 |
| if (opengl_dll_handle == NULL && !vc4) { |
| path = ALT_OGL_ES2; |
| opengl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| } |
| } |
| #ifdef DEFAULT_OGL |
| else { |
| path = DEFAULT_OGL; |
| opengl_dll_handle = SDL_LoadObject(path); |
| #ifdef ALT_OGL |
| if (opengl_dll_handle == NULL) { |
| path = ALT_OGL; |
| opengl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| } |
| #endif |
| } |
| _this->egl_data->opengl_dll_handle = opengl_dll_handle; |
| |
| if (opengl_dll_handle == NULL) { |
| return SDL_SetError("Could not initialize OpenGL / GLES library"); |
| } |
| |
| /* Loading libGL* in the previous step took care of loading libEGL.so, but we future proof by double checking */ |
| if (egl_path != NULL) { |
| egl_dll_handle = SDL_LoadObject(egl_path); |
| } |
| /* Try loading a EGL symbol, if it does not work try the default library paths */ |
| if (egl_dll_handle == NULL || SDL_LoadFunction(egl_dll_handle, "eglChooseConfig") == NULL) { |
| if (egl_dll_handle != NULL) { |
| SDL_UnloadObject(egl_dll_handle); |
| } |
| path = SDL_getenv("SDL_VIDEO_EGL_DRIVER"); |
| if (path == NULL) { |
| path = DEFAULT_EGL; |
| } |
| egl_dll_handle = SDL_LoadObject(path); |
| |
| #ifdef ALT_EGL |
| if (egl_dll_handle == NULL && !vc4) { |
| path = ALT_EGL; |
| egl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| |
| if (egl_dll_handle == NULL || SDL_LoadFunction(egl_dll_handle, "eglChooseConfig") == NULL) { |
| if (egl_dll_handle != NULL) { |
| SDL_UnloadObject(egl_dll_handle); |
| } |
| return SDL_SetError("Could not load EGL library"); |
| } |
| SDL_ClearError(); |
| } |
| #endif |
| |
| _this->egl_data->egl_dll_handle = egl_dll_handle; |
| #if SDL_VIDEO_DRIVER_VITA |
| _this->egl_data->opengl_dll_handle = opengl_dll_handle; |
| #endif |
| |
| /* Load new function pointers */ |
| LOAD_FUNC(eglGetDisplay); |
| LOAD_FUNC(eglInitialize); |
| LOAD_FUNC(eglTerminate); |
| LOAD_FUNC(eglGetProcAddress); |
| LOAD_FUNC(eglChooseConfig); |
| LOAD_FUNC(eglGetConfigAttrib); |
| LOAD_FUNC(eglCreateContext); |
| LOAD_FUNC(eglDestroyContext); |
| LOAD_FUNC(eglCreatePbufferSurface); |
| LOAD_FUNC(eglCreateWindowSurface); |
| LOAD_FUNC(eglDestroySurface); |
| LOAD_FUNC(eglMakeCurrent); |
| LOAD_FUNC(eglSwapBuffers); |
| LOAD_FUNC(eglSwapInterval); |
| LOAD_FUNC(eglWaitNative); |
| LOAD_FUNC(eglWaitGL); |
| LOAD_FUNC(eglBindAPI); |
| LOAD_FUNC(eglQueryAPI); |
| LOAD_FUNC(eglQueryString); |
| LOAD_FUNC(eglGetError); |
| LOAD_FUNC_EGLEXT(eglQueryDevicesEXT); |
| LOAD_FUNC_EGLEXT(eglGetPlatformDisplayEXT); |
| /* Atomic functions */ |
| LOAD_FUNC_EGLEXT(eglCreateSyncKHR); |
| LOAD_FUNC_EGLEXT(eglDestroySyncKHR); |
| LOAD_FUNC_EGLEXT(eglDupNativeFenceFDANDROID); |
| LOAD_FUNC_EGLEXT(eglWaitSyncKHR); |
| LOAD_FUNC_EGLEXT(eglClientWaitSyncKHR); |
| /* Atomic functions end */ |
| |
| if (path) { |
| SDL_strlcpy(_this->gl_config.driver_path, path, sizeof(_this->gl_config.driver_path) - 1); |
| } else { |
| *_this->gl_config.driver_path = '\0'; |
| } |
| |
| return 0; |
| } |
| |
| int SDL_EGL_LoadLibraryOnly(_THIS, const char *egl_path) |
| { |
| if (_this->egl_data) { |
| return SDL_SetError("EGL context already created"); |
| } |
| |
| _this->egl_data = (struct SDL_EGL_VideoData *)SDL_calloc(1, sizeof(SDL_EGL_VideoData)); |
| if (!_this->egl_data) { |
| return SDL_OutOfMemory(); |
| } |
| |
| if (SDL_EGL_LoadLibraryInternal(_this, egl_path) < 0) { |
| SDL_free(_this->egl_data); |
| _this->egl_data = NULL; |
| return -1; |
| } |
| return 0; |
| } |
| |
| static void SDL_EGL_GetVersion(_THIS) |
| { |
| if (_this->egl_data->eglQueryString) { |
| const char *egl_version = _this->egl_data->eglQueryString(_this->egl_data->egl_display, EGL_VERSION); |
| if (egl_version) { |
| int major = 0, minor = 0; |
| if (SDL_sscanf(egl_version, "%d.%d", &major, &minor) == 2) { |
| _this->egl_data->egl_version_major = major; |
| _this->egl_data->egl_version_minor = minor; |
| } else { |
| SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not parse EGL version string: %s", egl_version); |
| } |
| } |
| } |
| } |
| |
| int SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_display, EGLenum platform) |
| { |
| int library_load_retcode = SDL_EGL_LoadLibraryOnly(_this, egl_path); |
| if (library_load_retcode != 0) { |
| return library_load_retcode; |
| } |
| |
| _this->egl_data->egl_display = EGL_NO_DISPLAY; |
| |
| #if !defined(__WINRT__) |
| #if !defined(SDL_VIDEO_DRIVER_VITA) |
| if (platform) { |
| /* EGL 1.5 allows querying for client version with EGL_NO_DISPLAY |
| * -- |
| * Khronos doc: "EGL_BAD_DISPLAY is generated if display is not an EGL display connection, unless display is EGL_NO_DISPLAY and name is EGL_EXTENSIONS." |
| * Therefore SDL_EGL_GetVersion() shouldn't work with uninitialized display. |
| * - it actually doesn't work on Android that has 1.5 egl client |
| * - it works on desktop X11 (using SDL_VIDEO_X11_FORCE_EGL=1) */ |
| SDL_EGL_GetVersion(_this); |
| |
| if (_this->egl_data->egl_version_major == 1 && _this->egl_data->egl_version_minor == 5) { |
| LOAD_FUNC(eglGetPlatformDisplay); |
| } |
| |
| if (_this->egl_data->eglGetPlatformDisplay) { |
| _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplay(platform, (void *)(uintptr_t)native_display, NULL); |
| } else { |
| if (SDL_EGL_HasExtension(_this, SDL_EGL_CLIENT_EXTENSION, "EGL_EXT_platform_base")) { |
| _this->egl_data->eglGetPlatformDisplayEXT = SDL_EGL_GetProcAddress(_this, "eglGetPlatformDisplayEXT"); |
| if (_this->egl_data->eglGetPlatformDisplayEXT) { |
| _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplayEXT(platform, (void *)(uintptr_t)native_display, NULL); |
| } |
| } |
| } |
| } |
| #endif |
| /* Try the implementation-specific eglGetDisplay even if eglGetPlatformDisplay fails */ |
| if ((_this->egl_data->egl_display == EGL_NO_DISPLAY) && (_this->egl_data->eglGetDisplay != NULL)) { |
| _this->egl_data->egl_display = _this->egl_data->eglGetDisplay(native_display); |
| } |
| if (_this->egl_data->egl_display == EGL_NO_DISPLAY) { |
| _this->gl_config.driver_loaded = 0; |
| *_this->gl_config.driver_path = '\0'; |
| return SDL_SetError("Could not get EGL display"); |
| } |
| |
| if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) { |
| _this->gl_config.driver_loaded = 0; |
| *_this->gl_config.driver_path = '\0'; |
| return SDL_SetError("Could not initialize EGL"); |
| } |
| #endif |
| |
| /* Get the EGL version with a valid egl_display, for EGL <= 1.4 */ |
| SDL_EGL_GetVersion(_this); |
| |
| _this->egl_data->is_offscreen = SDL_FALSE; |
| |
| return 0; |
| } |
| |
| /** |
| On multi GPU machines EGL device 0 is not always the first valid GPU. |
| Container environments can restrict access to some GPUs that are still listed in the EGL |
| device list. If the requested device is a restricted GPU and cannot be used |
| (eglInitialize() will fail) then attempt to automatically and silently select the next |
| valid available GPU for EGL to use. |
| */ |
| |
| int SDL_EGL_InitializeOffscreen(_THIS, int device) |
| { |
| void *egl_devices[SDL_EGL_MAX_DEVICES]; |
| EGLint num_egl_devices = 0; |
| const char *egl_device_hint; |
| |
| if (_this->gl_config.driver_loaded <= 0) { |
| return SDL_SetError("SDL_EGL_LoadLibraryOnly() has not been called or has failed."); |
| } |
| |
| /* Check for all extensions that are optional until used and fail if any is missing */ |
| if (_this->egl_data->eglQueryDevicesEXT == NULL) { |
| return SDL_SetError("eglQueryDevicesEXT is missing (EXT_device_enumeration not supported by the drivers?)"); |
| } |
| |
| if (_this->egl_data->eglGetPlatformDisplayEXT == NULL) { |
| return SDL_SetError("eglGetPlatformDisplayEXT is missing (EXT_platform_base not supported by the drivers?)"); |
| } |
| |
| if (_this->egl_data->eglQueryDevicesEXT(SDL_EGL_MAX_DEVICES, egl_devices, &num_egl_devices) != EGL_TRUE) { |
| return SDL_SetError("eglQueryDevicesEXT() failed"); |
| } |
| |
| egl_device_hint = SDL_GetHint("SDL_HINT_EGL_DEVICE"); |
| if (egl_device_hint) { |
| device = SDL_atoi(egl_device_hint); |
| |
| if (device >= num_egl_devices) { |
| return SDL_SetError("Invalid EGL device is requested."); |
| } |
| |
| _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplayEXT(EGL_PLATFORM_DEVICE_EXT, egl_devices[device], NULL); |
| |
| if (_this->egl_data->egl_display == EGL_NO_DISPLAY) { |
| return SDL_SetError("eglGetPlatformDisplayEXT() failed."); |
| } |
| |
| if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) { |
| return SDL_SetError("Could not initialize EGL"); |
| } |
| } else { |
| int i; |
| SDL_bool found = SDL_FALSE; |
| EGLDisplay attempted_egl_display; |
| |
| /* If no hint is provided lets look for the first device/display that will allow us to eglInit */ |
| for (i = 0; i < num_egl_devices; i++) { |
| attempted_egl_display = _this->egl_data->eglGetPlatformDisplayEXT(EGL_PLATFORM_DEVICE_EXT, egl_devices[i], NULL); |
| |
| if (attempted_egl_display == EGL_NO_DISPLAY) { |
| continue; |
| } |
| |
| if (_this->egl_data->eglInitialize(attempted_egl_display, NULL, NULL) != EGL_TRUE) { |
| _this->egl_data->eglTerminate(attempted_egl_display); |
| continue; |
| } |
| |
| /* We did not fail, we'll pick this one! */ |
| _this->egl_data->egl_display = attempted_egl_display; |
| found = SDL_TRUE; |
| |
| break; |
| } |
| |
| if (!found) { |
| return SDL_SetError("Could not find a valid EGL device to initialize"); |
| } |
| } |
| |
| /* Get the EGL version with a valid egl_display, for EGL <= 1.4 */ |
| SDL_EGL_GetVersion(_this); |
| |
| _this->egl_data->is_offscreen = SDL_TRUE; |
| |
| return 0; |
| } |
| |
| void SDL_EGL_SetRequiredVisualId(_THIS, int visual_id) |
| { |
| _this->egl_data->egl_required_visual_id = visual_id; |
| } |
| |
| #ifdef DUMP_EGL_CONFIG |
| |
| #define ATTRIBUTE(_attr) \ |
| { \ |
| _attr, #_attr \ |
| } |
| |
| typedef struct |
| { |
| EGLint attribute; |
| char const *name; |
| } Attribute; |
| |
| static Attribute all_attributes[] = { |
| ATTRIBUTE(EGL_BUFFER_SIZE), |
| ATTRIBUTE(EGL_ALPHA_SIZE), |
| ATTRIBUTE(EGL_BLUE_SIZE), |
| ATTRIBUTE(EGL_GREEN_SIZE), |
| ATTRIBUTE(EGL_RED_SIZE), |
| ATTRIBUTE(EGL_DEPTH_SIZE), |
| ATTRIBUTE(EGL_STENCIL_SIZE), |
| ATTRIBUTE(EGL_CONFIG_CAVEAT), |
| ATTRIBUTE(EGL_CONFIG_ID), |
| ATTRIBUTE(EGL_LEVEL), |
| ATTRIBUTE(EGL_MAX_PBUFFER_HEIGHT), |
| ATTRIBUTE(EGL_MAX_PBUFFER_WIDTH), |
| ATTRIBUTE(EGL_MAX_PBUFFER_PIXELS), |
| ATTRIBUTE(EGL_NATIVE_RENDERABLE), |
| ATTRIBUTE(EGL_NATIVE_VISUAL_ID), |
| ATTRIBUTE(EGL_NATIVE_VISUAL_TYPE), |
| ATTRIBUTE(EGL_SAMPLES), |
| ATTRIBUTE(EGL_SAMPLE_BUFFERS), |
| ATTRIBUTE(EGL_SURFACE_TYPE), |
| ATTRIBUTE(EGL_TRANSPARENT_TYPE), |
| ATTRIBUTE(EGL_TRANSPARENT_BLUE_VALUE), |
| ATTRIBUTE(EGL_TRANSPARENT_GREEN_VALUE), |
| ATTRIBUTE(EGL_TRANSPARENT_RED_VALUE), |
| ATTRIBUTE(EGL_BIND_TO_TEXTURE_RGB), |
| ATTRIBUTE(EGL_BIND_TO_TEXTURE_RGBA), |
| ATTRIBUTE(EGL_MIN_SWAP_INTERVAL), |
| ATTRIBUTE(EGL_MAX_SWAP_INTERVAL), |
| ATTRIBUTE(EGL_LUMINANCE_SIZE), |
| ATTRIBUTE(EGL_ALPHA_MASK_SIZE), |
| ATTRIBUTE(EGL_COLOR_BUFFER_TYPE), |
| ATTRIBUTE(EGL_RENDERABLE_TYPE), |
| ATTRIBUTE(EGL_MATCH_NATIVE_PIXMAP), |
| ATTRIBUTE(EGL_CONFORMANT), |
| }; |
| |
| static void dumpconfig(_THIS, EGLConfig config) |
| { |
| int attr; |
| for (attr = 0; attr < sizeof(all_attributes) / sizeof(Attribute); attr++) { |
| EGLint value; |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, config, all_attributes[attr].attribute, &value); |
| SDL_Log("\t%-32s: %10d (0x%08x)\n", all_attributes[attr].name, value, value); |
| } |
| } |
| |
| #endif /* DUMP_EGL_CONFIG */ |
| |
| static int SDL_EGL_PrivateChooseConfig(_THIS, SDL_bool set_config_caveat_none) |
| { |
| /* 64 seems nice. */ |
| EGLint attribs[64]; |
| EGLint found_configs = 0, value; |
| /* 128 seems even nicer here */ |
| EGLConfig configs[128]; |
| SDL_bool has_matching_format = SDL_FALSE; |
| int i, j, best_bitdiff = -1, best_truecolor_bitdiff = -1; |
| int truecolor_config_idx = -1; |
| |
| /* Get a valid EGL configuration */ |
| i = 0; |
| attribs[i++] = EGL_RED_SIZE; |
| attribs[i++] = _this->gl_config.red_size; |
| attribs[i++] = EGL_GREEN_SIZE; |
| attribs[i++] = _this->gl_config.green_size; |
| attribs[i++] = EGL_BLUE_SIZE; |
| attribs[i++] = _this->gl_config.blue_size; |
| |
| if (set_config_caveat_none) { |
| attribs[i++] = EGL_CONFIG_CAVEAT; |
| attribs[i++] = EGL_NONE; |
| } |
| |
| if (_this->gl_config.alpha_size) { |
| attribs[i++] = EGL_ALPHA_SIZE; |
| attribs[i++] = _this->gl_config.alpha_size; |
| } |
| |
| if (_this->gl_config.buffer_size) { |
| attribs[i++] = EGL_BUFFER_SIZE; |
| attribs[i++] = _this->gl_config.buffer_size; |
| } |
| |
| if (_this->gl_config.depth_size) { |
| attribs[i++] = EGL_DEPTH_SIZE; |
| attribs[i++] = _this->gl_config.depth_size; |
| } |
| |
| if (_this->gl_config.stencil_size) { |
| attribs[i++] = EGL_STENCIL_SIZE; |
| attribs[i++] = _this->gl_config.stencil_size; |
| } |
| |
| if (_this->gl_config.multisamplebuffers) { |
| attribs[i++] = EGL_SAMPLE_BUFFERS; |
| attribs[i++] = _this->gl_config.multisamplebuffers; |
| } |
| |
| if (_this->gl_config.multisamplesamples) { |
| attribs[i++] = EGL_SAMPLES; |
| attribs[i++] = _this->gl_config.multisamplesamples; |
| } |
| |
| if (_this->gl_config.floatbuffers) { |
| attribs[i++] = EGL_COLOR_COMPONENT_TYPE_EXT; |
| attribs[i++] = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT; |
| } |
| |
| if (_this->egl_data->is_offscreen) { |
| attribs[i++] = EGL_SURFACE_TYPE; |
| attribs[i++] = EGL_PBUFFER_BIT; |
| } |
| |
| attribs[i++] = EGL_RENDERABLE_TYPE; |
| if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) { |
| #ifdef EGL_KHR_create_context |
| if (_this->gl_config.major_version >= 3 && |
| SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) { |
| attribs[i++] = EGL_OPENGL_ES3_BIT_KHR; |
| } else |
| #endif |
| if (_this->gl_config.major_version >= 2) { |
| attribs[i++] = EGL_OPENGL_ES2_BIT; |
| } else { |
| attribs[i++] = EGL_OPENGL_ES_BIT; |
| } |
| _this->egl_data->eglBindAPI(EGL_OPENGL_ES_API); |
| } else { |
| attribs[i++] = EGL_OPENGL_BIT; |
| _this->egl_data->eglBindAPI(EGL_OPENGL_API); |
| } |
| |
| if (_this->egl_data->egl_surfacetype) { |
| attribs[i++] = EGL_SURFACE_TYPE; |
| attribs[i++] = _this->egl_data->egl_surfacetype; |
| } |
| |
| attribs[i++] = EGL_NONE; |
| |
| SDL_assert(i < SDL_arraysize(attribs)); |
| |
| if (_this->egl_data->eglChooseConfig(_this->egl_data->egl_display, |
| attribs, |
| configs, SDL_arraysize(configs), |
| &found_configs) == EGL_FALSE || |
| found_configs == 0) { |
| return -1; |
| } |
| |
| /* first ensure that a found config has a matching format, or the function will fall through. */ |
| if (_this->egl_data->egl_required_visual_id) { |
| for (i = 0; i < found_configs; i++) { |
| EGLint format; |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, |
| configs[i], |
| EGL_NATIVE_VISUAL_ID, &format); |
| if (_this->egl_data->egl_required_visual_id == format) { |
| has_matching_format = SDL_TRUE; |
| break; |
| } |
| } |
| } |
| |
| /* eglChooseConfig returns a number of configurations that match or exceed the requested attribs. */ |
| /* From those, we select the one that matches our requirements more closely via a makeshift algorithm */ |
| |
| for (i = 0; i < found_configs; i++) { |
| SDL_bool is_truecolor = SDL_FALSE; |
| int bitdiff = 0; |
| |
| if (has_matching_format && _this->egl_data->egl_required_visual_id) { |
| EGLint format; |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, |
| configs[i], |
| EGL_NATIVE_VISUAL_ID, &format); |
| if (_this->egl_data->egl_required_visual_id != format) { |
| continue; |
| } |
| } |
| |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, configs[i], EGL_RED_SIZE, &value); |
| if (value == 8) { |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, configs[i], EGL_GREEN_SIZE, &value); |
| if (value == 8) { |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, configs[i], EGL_BLUE_SIZE, &value); |
| if (value == 8) { |
| is_truecolor = SDL_TRUE; |
| } |
| } |
| } |
| |
| for (j = 0; j < SDL_arraysize(attribs) - 1; j += 2) { |
| if (attribs[j] == EGL_NONE) { |
| break; |
| } |
| |
| if (attribs[j + 1] != EGL_DONT_CARE && (attribs[j] == EGL_RED_SIZE || |
| attribs[j] == EGL_GREEN_SIZE || |
| attribs[j] == EGL_BLUE_SIZE || |
| attribs[j] == EGL_ALPHA_SIZE || |
| attribs[j] == EGL_DEPTH_SIZE || |
| attribs[j] == EGL_STENCIL_SIZE)) { |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, configs[i], attribs[j], &value); |
| bitdiff += value - attribs[j + 1]; /* value is always >= attrib */ |
| } |
| } |
| |
| if ((bitdiff < best_bitdiff) || (best_bitdiff == -1)) { |
| _this->egl_data->egl_config = configs[i]; |
| best_bitdiff = bitdiff; |
| } |
| |
| if (is_truecolor && ((bitdiff < best_truecolor_bitdiff) || (best_truecolor_bitdiff == -1))) { |
| truecolor_config_idx = i; |
| best_truecolor_bitdiff = bitdiff; |
| } |
| } |
| |
| #define FAVOR_TRUECOLOR 1 |
| #if FAVOR_TRUECOLOR |
| /* Some apps request a low color depth, either because they _assume_ |
| they'll get a larger one but don't want to fail if only smaller ones |
| are available, or they just never called SDL_GL_SetAttribute at all and |
| got a tiny default. For these cases, a game that would otherwise run |
| at 24-bit color might get dithered down to something smaller, which is |
| worth avoiding. If the app requested <= 16 bit color and an exact 24-bit |
| match is available, favor that. Otherwise, we look for the closest |
| match. Note that while the API promises what you request _or better_, |
| it's feasible this can be disastrous for performance for custom software |
| on small hardware that all expected to actually get 16-bit color. In this |
| case, turn off FAVOR_TRUECOLOR (and maybe send a patch to make this more |
| flexible). */ |
| if (((_this->gl_config.red_size + _this->gl_config.blue_size + _this->gl_config.green_size) <= 16)) { |
| if (truecolor_config_idx != -1) { |
| _this->egl_data->egl_config = configs[truecolor_config_idx]; |
| } |
| } |
| #endif |
| |
| #ifdef DUMP_EGL_CONFIG |
| dumpconfig(_this, _this->egl_data->egl_config); |
| #endif |
| |
| return 0; |
| } |
| |
| int SDL_EGL_ChooseConfig(_THIS) |
| { |
| int ret; |
| |
| if (!_this->egl_data) { |
| return SDL_SetError("EGL not initialized"); |
| } |
| |
| /* Try with EGL_CONFIG_CAVEAT set to EGL_NONE, to avoid any EGL_SLOW_CONFIG or EGL_NON_CONFORMANT_CONFIG */ |
| ret = SDL_EGL_PrivateChooseConfig(_this, SDL_TRUE); |
| if (ret == 0) { |
| return 0; |
| } |
| |
| /* Fallback with all configs */ |
| ret = SDL_EGL_PrivateChooseConfig(_this, SDL_FALSE); |
| if (ret == 0) { |
| SDL_Log("SDL_EGL_ChooseConfig: found a slow EGL config"); |
| return 0; |
| } |
| |
| return SDL_EGL_SetError("Couldn't find matching EGL config", "eglChooseConfig"); |
| } |
| |
| SDL_GLContext SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface) |
| { |
| /* max 14 values plus terminator. */ |
| EGLint attribs[15]; |
| int attr = 0; |
| |
| EGLContext egl_context, share_context = EGL_NO_CONTEXT; |
| EGLint profile_mask = _this->gl_config.profile_mask; |
| EGLint major_version = _this->gl_config.major_version; |
| EGLint minor_version = _this->gl_config.minor_version; |
| SDL_bool profile_es = (profile_mask == SDL_GL_CONTEXT_PROFILE_ES); |
| |
| if (!_this->egl_data) { |
| SDL_SetError("EGL not initialized"); |
| return NULL; |
| } |
| |
| if (_this->gl_config.share_with_current_context) { |
| share_context = (EGLContext)SDL_GL_GetCurrentContext(); |
| } |
| |
| #if SDL_VIDEO_DRIVER_ANDROID |
| if (_this->gl_config.flags & SDL_GL_CONTEXT_DEBUG_FLAG) { |
| /* If SDL_GL_CONTEXT_DEBUG_FLAG is set but EGL_KHR_debug unsupported, unset. |
| * This is required because some Android devices like to complain about it |
| * by "silently" failing, logging a hint which could be easily overlooked: |
| * E/libEGL (26984): validate_display:255 error 3008 (EGL_BAD_DISPLAY) |
| * The following explicitly checks for EGL_KHR_debug before EGL 1.5 |
| */ |
| int egl_version_major = _this->egl_data->egl_version_major; |
| int egl_version_minor = _this->egl_data->egl_version_minor; |
| if (((egl_version_major < 1) || (egl_version_major == 1 && egl_version_minor < 5)) && |
| !SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_debug")) { |
| /* SDL profile bits match EGL profile bits. */ |
| _this->gl_config.flags &= ~SDL_GL_CONTEXT_DEBUG_FLAG; |
| } |
| } |
| #endif |
| |
| /* Set the context version and other attributes. */ |
| if ((major_version < 3 || (minor_version == 0 && profile_es)) && |
| _this->gl_config.flags == 0 && |
| (profile_mask == 0 || profile_es)) { |
| /* Create a context without using EGL_KHR_create_context attribs. |
| * When creating a GLES context without EGL_KHR_create_context we can |
| * only specify the major version. When creating a desktop GL context |
| * we can't specify any version, so we only try in that case when the |
| * version is less than 3.0 (matches SDL's GLX/WGL behavior.) |
| */ |
| if (profile_es) { |
| attribs[attr++] = EGL_CONTEXT_CLIENT_VERSION; |
| attribs[attr++] = SDL_max(major_version, 1); |
| } |
| } else { |
| #ifdef EGL_KHR_create_context |
| /* The Major/minor version, context profiles, and context flags can |
| * only be specified when this extension is available. |
| */ |
| if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) { |
| attribs[attr++] = EGL_CONTEXT_MAJOR_VERSION_KHR; |
| attribs[attr++] = major_version; |
| attribs[attr++] = EGL_CONTEXT_MINOR_VERSION_KHR; |
| attribs[attr++] = minor_version; |
| |
| /* SDL profile bits match EGL profile bits. */ |
| if (profile_mask != 0 && profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { |
| attribs[attr++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR; |
| attribs[attr++] = profile_mask; |
| } |
| |
| /* SDL flags match EGL flags. */ |
| if (_this->gl_config.flags != 0) { |
| attribs[attr++] = EGL_CONTEXT_FLAGS_KHR; |
| attribs[attr++] = _this->gl_config.flags; |
| } |
| } else |
| #endif /* EGL_KHR_create_context */ |
| { |
| SDL_SetError("Could not create EGL context (context attributes are not supported)"); |
| return NULL; |
| } |
| } |
| |
| #ifdef EGL_KHR_create_context_no_error |
| if (_this->gl_config.no_error) { |
| if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context_no_error")) { |
| attribs[attr++] = EGL_CONTEXT_OPENGL_NO_ERROR_KHR; |
| attribs[attr++] = _this->gl_config.no_error; |
| } |
| } |
| #endif |
| |
| attribs[attr++] = EGL_NONE; |
| |
| /* Bind the API */ |
| if (profile_es) { |
| _this->egl_data->apitype = EGL_OPENGL_ES_API; |
| } else { |
| _this->egl_data->apitype = EGL_OPENGL_API; |
| } |
| _this->egl_data->eglBindAPI(_this->egl_data->apitype); |
| |
| egl_context = _this->egl_data->eglCreateContext(_this->egl_data->egl_display, |
| _this->egl_data->egl_config, |
| share_context, attribs); |
| |
| if (egl_context == EGL_NO_CONTEXT) { |
| SDL_EGL_SetError("Could not create EGL context", "eglCreateContext"); |
| return NULL; |
| } |
| |
| _this->egl_data->egl_swapinterval = 0; |
| |
| if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) { |
| /* Delete the context */ |
| SDL_EGL_DeleteContext(_this, egl_context); |
| return NULL; |
| } |
| |
| /* Check whether making contexts current without a surface is supported. |
| * First condition: EGL must support it. That's the case for EGL 1.5 |
| * or later, or if the EGL_KHR_surfaceless_context extension is present. */ |
| if ((_this->egl_data->egl_version_major > 1) || |
| ((_this->egl_data->egl_version_major == 1) && (_this->egl_data->egl_version_minor >= 5)) || |
| SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_surfaceless_context")) { |
| /* Secondary condition: The client API must support it. */ |
| if (profile_es) { |
| /* On OpenGL ES, the GL_OES_surfaceless_context extension must be |
| * present. */ |
| if (SDL_GL_ExtensionSupported("GL_OES_surfaceless_context")) { |
| _this->gl_allow_no_surface = SDL_TRUE; |
| } |
| #if SDL_VIDEO_OPENGL && !defined(SDL_VIDEO_DRIVER_VITA) |
| } else { |
| /* Desktop OpenGL supports it by default from version 3.0 on. */ |
| void(APIENTRY * glGetIntegervFunc)(GLenum pname, GLint * params); |
| glGetIntegervFunc = SDL_GL_GetProcAddress("glGetIntegerv"); |
| if (glGetIntegervFunc) { |
| GLint v = 0; |
| glGetIntegervFunc(GL_MAJOR_VERSION, &v); |
| if (v >= 3) { |
| _this->gl_allow_no_surface = SDL_TRUE; |
| } |
| } |
| #endif |
| } |
| } |
| |
| return (SDL_GLContext)egl_context; |
| } |
| |
| int SDL_EGL_MakeCurrent(_THIS, EGLSurface egl_surface, SDL_GLContext context) |
| { |
| EGLContext egl_context = (EGLContext)context; |
| |
| if (!_this->egl_data) { |
| return SDL_SetError("EGL not initialized"); |
| } |
| |
| if (!_this->egl_data->eglMakeCurrent) { |
| if (!egl_surface && !context) { |
| /* Can't do the nothing there is to do? Probably trying to cleanup a failed startup, just return. */ |
| return 0; |
| } else { |
| return SDL_SetError("EGL not initialized"); /* something clearly went wrong somewhere. */ |
| } |
| } |
| |
| /* Make sure current thread has a valid API bound to it. */ |
| if (_this->egl_data->eglBindAPI) { |
| _this->egl_data->eglBindAPI(_this->egl_data->apitype); |
| } |
| |
| /* The android emulator crashes badly if you try to eglMakeCurrent |
| * with a valid context and invalid surface, so we have to check for both here. |
| */ |
| if (!egl_context || (!egl_surface && !_this->gl_allow_no_surface)) { |
| _this->egl_data->eglMakeCurrent(_this->egl_data->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
| } else { |
| if (!_this->egl_data->eglMakeCurrent(_this->egl_data->egl_display, |
| egl_surface, egl_surface, egl_context)) { |
| return SDL_EGL_SetError("Unable to make EGL context current", "eglMakeCurrent"); |
| } |
| } |
| |
| return 0; |
| } |
| |
| int SDL_EGL_SetSwapInterval(_THIS, int interval) |
| { |
| EGLBoolean status; |
| |
| if (!_this->egl_data) { |
| return SDL_SetError("EGL not initialized"); |
| } |
| |
| /* FIXME: Revisit this check when EGL_EXT_swap_control_tear is published: |
| * https://github.com/KhronosGroup/EGL-Registry/pull/113 |
| */ |
| if (interval < 0) { |
| return SDL_SetError("Late swap tearing currently unsupported"); |
| } |
| |
| status = _this->egl_data->eglSwapInterval(_this->egl_data->egl_display, interval); |
| if (status == EGL_TRUE) { |
| _this->egl_data->egl_swapinterval = interval; |
| return 0; |
| } |
| |
| return SDL_EGL_SetError("Unable to set the EGL swap interval", "eglSwapInterval"); |
| } |
| |
| int SDL_EGL_GetSwapInterval(_THIS) |
| { |
| if (!_this->egl_data) { |
| SDL_SetError("EGL not initialized"); |
| return 0; |
| } |
| |
| return _this->egl_data->egl_swapinterval; |
| } |
| |
| int SDL_EGL_SwapBuffers(_THIS, EGLSurface egl_surface) |
| { |
| if (!_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, egl_surface)) { |
| return SDL_EGL_SetError("unable to show color buffer in an OS-native window", "eglSwapBuffers"); |
| } |
| return 0; |
| } |
| |
| void SDL_EGL_DeleteContext(_THIS, SDL_GLContext context) |
| { |
| EGLContext egl_context = (EGLContext)context; |
| |
| /* Clean up GLES and EGL */ |
| if (!_this->egl_data) { |
| return; |
| } |
| |
| if (egl_context != NULL && egl_context != EGL_NO_CONTEXT) { |
| _this->egl_data->eglDestroyContext(_this->egl_data->egl_display, egl_context); |
| } |
| } |
| |
| EGLSurface *SDL_EGL_CreateSurface(_THIS, NativeWindowType nw) |
| { |
| #if SDL_VIDEO_DRIVER_ANDROID |
| EGLint format_wanted; |
| EGLint format_got; |
| #endif |
| /* max 2 key+value pairs, plus terminator. */ |
| EGLint attribs[5]; |
| int attr = 0; |
| |
| EGLSurface *surface; |
| |
| if (SDL_EGL_ChooseConfig(_this) != 0) { |
| return EGL_NO_SURFACE; |
| } |
| |
| #if SDL_VIDEO_DRIVER_ANDROID |
| /* On Android, EGL_NATIVE_VISUAL_ID is an attribute of the EGLConfig that is |
| * guaranteed to be accepted by ANativeWindow_setBuffersGeometry(). */ |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, |
| _this->egl_data->egl_config, |
| EGL_NATIVE_VISUAL_ID, &format_wanted); |
| |
| /* Format based on selected egl config. */ |
| ANativeWindow_setBuffersGeometry(nw, 0, 0, format_wanted); |
| #endif |
| |
| if (_this->gl_config.framebuffer_srgb_capable) { |
| #ifdef EGL_KHR_gl_colorspace |
| if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_gl_colorspace")) { |
| attribs[attr++] = EGL_GL_COLORSPACE_KHR; |
| attribs[attr++] = EGL_GL_COLORSPACE_SRGB_KHR; |
| } else |
| #endif |
| { |
| SDL_SetError("EGL implementation does not support sRGB system framebuffers"); |
| return EGL_NO_SURFACE; |
| } |
| } |
| |
| #ifdef EGL_EXT_present_opaque |
| if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_EXT_present_opaque")) { |
| const SDL_bool allow_transparent = SDL_GetHintBoolean(SDL_HINT_VIDEO_EGL_ALLOW_TRANSPARENCY, SDL_FALSE); |
| attribs[attr++] = EGL_PRESENT_OPAQUE_EXT; |
| attribs[attr++] = allow_transparent ? EGL_FALSE : EGL_TRUE; |
| } |
| #endif |
| |
| attribs[attr++] = EGL_NONE; |
| |
| surface = _this->egl_data->eglCreateWindowSurface( |
| _this->egl_data->egl_display, |
| _this->egl_data->egl_config, |
| nw, &attribs[0]); |
| if (surface == EGL_NO_SURFACE) { |
| SDL_EGL_SetError("unable to create an EGL window surface", "eglCreateWindowSurface"); |
| } |
| |
| #if SDL_VIDEO_DRIVER_ANDROID |
| format_got = ANativeWindow_getFormat(nw); |
| Android_SetFormat(format_wanted, format_got); |
| #endif |
| |
| return surface; |
| } |
| |
| EGLSurface |
| SDL_EGL_CreateOffscreenSurface(_THIS, int width, int height) |
| { |
| EGLint attributes[] = { |
| EGL_WIDTH, 0, |
| EGL_HEIGHT, 0, |
| EGL_NONE |
| }; |
| attributes[1] = width; |
| attributes[3] = height; |
| |
| if (SDL_EGL_ChooseConfig(_this) != 0) { |
| return EGL_NO_SURFACE; |
| } |
| |
| return _this->egl_data->eglCreatePbufferSurface( |
| _this->egl_data->egl_display, |
| _this->egl_data->egl_config, |
| attributes); |
| } |
| |
| void SDL_EGL_DestroySurface(_THIS, EGLSurface egl_surface) |
| { |
| if (!_this->egl_data) { |
| return; |
| } |
| |
| if (egl_surface != EGL_NO_SURFACE) { |
| _this->egl_data->eglDestroySurface(_this->egl_data->egl_display, egl_surface); |
| } |
| } |
| |
| #endif /* SDL_VIDEO_OPENGL_EGL */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
