| /* |
| * Simple DirectMedia Layer |
| * Copyright (C) 1997-2019 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 "../core/android/SDL_android.h" |
| #endif |
| |
| #include "SDL_sysvideo.h" |
| #include "SDL_log.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 */ |
| |
| #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" //??? |
| |
| #else |
| /* Desktop Linux */ |
| #define DEFAULT_OGL "libGL.so.1" |
| #define DEFAULT_EGL "libEGL.so.1" |
| #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 */ |
| |
| #ifdef SDL_VIDEO_STATIC_ANGLE |
| #define LOAD_FUNC(NAME) \ |
| _this->egl_data->NAME = (void *)NAME; |
| #else |
| #define LOAD_FUNC(NAME) \ |
| _this->egl_data->NAME = SDL_LoadFunction(_this->egl_data->dll_handle, #NAME); \ |
| if (!_this->egl_data->NAME) \ |
| { \ |
| return SDL_SetError("Could not retrieve EGL function " #NAME); \ |
| } |
| #endif |
| |
| 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. */ |
| 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 */ |
| typedef enum { |
| SDL_EGL_DISPLAY_EXTENSION, |
| SDL_EGL_CLIENT_EXTENSION |
| } SDL_EGL_ExtensionType; |
| |
| static 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) |
| { |
| static char procname[1024]; |
| void *retval; |
| |
| /* eglGetProcAddress is busted on Android http://code.google.com/p/android/issues/detail?id=7681 */ |
| #if !defined(SDL_VIDEO_DRIVER_ANDROID) |
| if (_this->egl_data->eglGetProcAddress) { |
| retval = _this->egl_data->eglGetProcAddress(proc); |
| if (retval) { |
| return retval; |
| } |
| } |
| #endif |
| |
| retval = SDL_LoadFunction(_this->egl_data->egl_dll_handle, proc); |
| if (!retval && SDL_strlen(proc) <= 1022) { |
| procname[0] = '_'; |
| SDL_strlcpy(procname + 1, proc, 1022); |
| retval = SDL_LoadFunction(_this->egl_data->egl_dll_handle, procname); |
| } |
| 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->dll_handle) { |
| SDL_UnloadObject(_this->egl_data->dll_handle); |
| _this->egl_data->dll_handle = NULL; |
| } |
| if (_this->egl_data->egl_dll_handle) { |
| SDL_UnloadObject(_this->egl_data->egl_dll_handle); |
| _this->egl_data->egl_dll_handle = NULL; |
| } |
| |
| SDL_free(_this->egl_data); |
| _this->egl_data = NULL; |
| } |
| } |
| |
| int |
| SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_display, EGLenum platform) |
| { |
| void *dll_handle = NULL, *egl_dll_handle = NULL; /* The naming is counter intuitive, but hey, I just work here -- Gabriel */ |
| const char *path = NULL; |
| int egl_version_major = 0, egl_version_minor = 0; |
| #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 (_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_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 |
| |
| #ifndef SDL_VIDEO_STATIC_ANGLE |
| /* 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) { |
| egl_dll_handle = SDL_LoadObject(path); |
| } |
| |
| if (egl_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; |
| egl_dll_handle = SDL_LoadObject(path); |
| #ifdef ALT_OGL_ES2 |
| if (egl_dll_handle == NULL && !vc4) { |
| path = ALT_OGL_ES2; |
| egl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| |
| } else { |
| path = DEFAULT_OGL_ES; |
| egl_dll_handle = SDL_LoadObject(path); |
| if (egl_dll_handle == NULL) { |
| path = DEFAULT_OGL_ES_PVR; |
| egl_dll_handle = SDL_LoadObject(path); |
| } |
| #ifdef ALT_OGL_ES2 |
| if (egl_dll_handle == NULL && !vc4) { |
| path = ALT_OGL_ES2; |
| egl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| } |
| } |
| #ifdef DEFAULT_OGL |
| else { |
| path = DEFAULT_OGL; |
| egl_dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| } |
| _this->egl_data->egl_dll_handle = egl_dll_handle; |
| |
| if (egl_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) { |
| dll_handle = SDL_LoadObject(egl_path); |
| } |
| /* Try loading a EGL symbol, if it does not work try the default library paths */ |
| if (dll_handle == NULL || SDL_LoadFunction(dll_handle, "eglChooseConfig") == NULL) { |
| if (dll_handle != NULL) { |
| SDL_UnloadObject(dll_handle); |
| } |
| path = SDL_getenv("SDL_VIDEO_EGL_DRIVER"); |
| if (path == NULL) { |
| path = DEFAULT_EGL; |
| } |
| dll_handle = SDL_LoadObject(path); |
| |
| #ifdef ALT_EGL |
| if (dll_handle == NULL && !vc4) { |
| path = ALT_EGL; |
| dll_handle = SDL_LoadObject(path); |
| } |
| #endif |
| |
| if (dll_handle == NULL || SDL_LoadFunction(dll_handle, "eglChooseConfig") == NULL) { |
| if (dll_handle != NULL) { |
| SDL_UnloadObject(dll_handle); |
| } |
| return SDL_SetError("Could not load EGL library"); |
| } |
| SDL_ClearError(); |
| } |
| #endif |
| |
| _this->egl_data->dll_handle = dll_handle; |
| |
| /* 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(eglQueryString); |
| LOAD_FUNC(eglGetError); |
| |
| if (_this->egl_data->eglQueryString) { |
| /* EGL 1.5 allows querying for client version */ |
| const char *egl_version = _this->egl_data->eglQueryString(EGL_NO_DISPLAY, EGL_VERSION); |
| if (egl_version != NULL) { |
| if (SDL_sscanf(egl_version, "%d.%d", &egl_version_major, &egl_version_minor) != 2) { |
| egl_version_major = 0; |
| egl_version_minor = 0; |
| SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not parse EGL version string: %s", egl_version); |
| } |
| } |
| } |
| |
| _this->egl_data->egl_version_major = egl_version_major; |
| _this->egl_data->egl_version_minor = egl_version_minor; |
| |
| if (egl_version_major == 1 && egl_version_minor == 5) { |
| LOAD_FUNC(eglGetPlatformDisplay); |
| } |
| |
| _this->egl_data->egl_display = EGL_NO_DISPLAY; |
| #if !defined(__WINRT__) |
| if (platform) { |
| if (egl_version_major == 1 && egl_version_minor == 5) { |
| _this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplay(platform, (void *)(size_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 *)(size_t)native_display, NULL); |
| } |
| } |
| } |
| } |
| /* Try the implementation-specific eglGetDisplay even if eglGetPlatformDisplay fails */ |
| if (_this->egl_data->egl_display == EGL_NO_DISPLAY) { |
| _this->egl_data->egl_display = _this->egl_data->eglGetDisplay(native_display); |
| } |
| if (_this->egl_data->egl_display == EGL_NO_DISPLAY) { |
| return SDL_SetError("Could not get EGL display"); |
| } |
| |
| if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) { |
| return SDL_SetError("Could not initialize EGL"); |
| } |
| #endif |
| |
| 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; |
| } |
| |
| 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; |
| |
| Attribute 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(attributes)/sizeof(Attribute) ; attr++) { |
| EGLint value; |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, config, attributes[attr].attribute, &value); |
| SDL_Log("\t%-32s: %10d (0x%08x)\n", attributes[attr].name, value, value); |
| } |
| } |
| |
| #endif /* DUMP_EGL_CONFIG */ |
| |
| int |
| SDL_EGL_ChooseConfig(_THIS) |
| { |
| /* 64 seems nice. */ |
| EGLint attribs[64]; |
| EGLint found_configs = 0, value; |
| /* 128 seems even nicer here */ |
| EGLConfig configs[128]; |
| int i, j, best_bitdiff = -1, bitdiff; |
| |
| if (!_this->egl_data) { |
| /* The EGL library wasn't loaded, SDL_GetError() should have info */ |
| return -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 (_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; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| |
| if (_this->egl_data->eglChooseConfig(_this->egl_data->egl_display, |
| attribs, |
| configs, SDL_arraysize(configs), |
| &found_configs) == EGL_FALSE || |
| found_configs == 0) { |
| return SDL_EGL_SetError("Couldn't find matching EGL config", "eglChooseConfig"); |
| } |
| |
| /* 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++ ) { |
| if (_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; |
| } |
| |
| bitdiff = 0; |
| 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 (bitdiff == 0) { |
| break; /* we found an exact match! */ |
| } |
| } |
| |
| #ifdef DUMP_EGL_CONFIG |
| dumpconfig(_this, _this->egl_data->egl_config); |
| #endif |
| |
| return 0; |
| } |
| |
| 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) { |
| /* The EGL library wasn't loaded, SDL_GetError() should have info */ |
| 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) != 0) { |
| /* 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; |
| } |
| } |
| |
| if (_this->gl_config.no_error) { |
| #ifdef EGL_KHR_create_context_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; |
| } else |
| #endif |
| { |
| SDL_SetError("EGL implementation does not support no_error contexts"); |
| return NULL; |
| } |
| } |
| |
| attribs[attr++] = EGL_NONE; |
| |
| /* Bind the API */ |
| if (profile_es) { |
| _this->egl_data->eglBindAPI(EGL_OPENGL_ES_API); |
| } else { |
| _this->egl_data->eglBindAPI(EGL_OPENGL_API); |
| } |
| |
| 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) { |
| /* Save the SDL error set by SDL_EGL_MakeCurrent */ |
| char errorText[1024]; |
| SDL_strlcpy(errorText, SDL_GetError(), SDL_arraysize(errorText)); |
| |
| /* Delete the context, which may alter the value returned by SDL_GetError() */ |
| SDL_EGL_DeleteContext(_this, egl_context); |
| |
| /* Restore the SDL error */ |
| SDL_SetError("%s", errorText); |
| |
| return NULL; |
| } |
| |
| 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("OpenGL not initialized"); |
| } |
| |
| /* 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->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"); |
| } |
| |
| 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) |
| { |
| /* max 2 values plus terminator. */ |
| EGLint attribs[3]; |
| int attr = 0; |
| |
| EGLSurface * surface; |
| |
| if (SDL_EGL_ChooseConfig(_this) != 0) { |
| return EGL_NO_SURFACE; |
| } |
| |
| #if SDL_VIDEO_DRIVER_ANDROID |
| { |
| /* Android docs recommend doing this! |
| * Ref: http://developer.android.com/reference/android/app/NativeActivity.html |
| */ |
| EGLint format; |
| _this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display, |
| _this->egl_data->egl_config, |
| EGL_NATIVE_VISUAL_ID, &format); |
| |
| ANativeWindow_setBuffersGeometry(nw, 0, 0, format); |
| |
| /* Update SurfaceView holder format. |
| * May triggers a sequence surfaceDestroyed(), surfaceCreated(), surfaceChanged(). */ |
| Android_JNI_SetSurfaceViewFormat(format); |
| } |
| #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; |
| } |
| } |
| |
| 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"); |
| } |
| return surface; |
| } |
| |
| 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: */ |
| |
