2015-06-21 17:33:46 +02:00
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/*
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* Simple DirectMedia Layer
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2017-01-02 03:33:28 +01:00
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* Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
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2015-06-21 17:33:46 +02:00
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../SDL_internal.h"
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#if SDL_VIDEO_OPENGL_EGL
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#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
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#include "../core/windows/SDL_windows.h"
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#endif
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2017-02-10 18:41:16 +01:00
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#if SDL_VIDEO_DRIVER_ANDROID
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#include <android/native_window.h>
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#endif
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2015-06-21 17:33:46 +02:00
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#include "SDL_sysvideo.h"
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2017-08-02 19:22:48 +02:00
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#include "SDL_log.h"
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2015-06-21 17:33:46 +02:00
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#include "SDL_egl_c.h"
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#include "SDL_loadso.h"
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#include "SDL_hints.h"
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#ifdef EGL_KHR_create_context
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/* EGL_OPENGL_ES3_BIT_KHR was added in version 13 of the extension. */
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#ifndef EGL_OPENGL_ES3_BIT_KHR
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#define EGL_OPENGL_ES3_BIT_KHR 0x00000040
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#endif
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#endif /* EGL_KHR_create_context */
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#if SDL_VIDEO_DRIVER_RPI
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/* Raspbian places the OpenGL ES/EGL binaries in a non standard path */
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2017-09-07 01:34:23 +02:00
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#define DEFAULT_EGL "/opt/vc/lib/libbrcmEGL.so"
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#define DEFAULT_OGL_ES2 "/opt/vc/lib/libbrcmGLESv2.so"
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#define ALT_EGL "/opt/vc/lib/libEGL.so"
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#define ALT_OGL_ES2 "/opt/vc/lib/libGLESv2.so"
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2015-06-21 17:33:46 +02:00
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#define DEFAULT_OGL_ES_PVR "/opt/vc/lib/libGLES_CM.so"
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#define DEFAULT_OGL_ES "/opt/vc/lib/libGLESv1_CM.so"
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#elif SDL_VIDEO_DRIVER_ANDROID || SDL_VIDEO_DRIVER_VIVANTE
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/* Android */
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#define DEFAULT_EGL "libEGL.so"
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#define DEFAULT_OGL_ES2 "libGLESv2.so"
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#define DEFAULT_OGL_ES_PVR "libGLES_CM.so"
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#define DEFAULT_OGL_ES "libGLESv1_CM.so"
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#elif SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
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/* EGL AND OpenGL ES support via ANGLE */
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#define DEFAULT_EGL "libEGL.dll"
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#define DEFAULT_OGL_ES2 "libGLESv2.dll"
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#define DEFAULT_OGL_ES_PVR "libGLES_CM.dll"
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#define DEFAULT_OGL_ES "libGLESv1_CM.dll"
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#else
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/* Desktop Linux */
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#define DEFAULT_OGL "libGL.so.1"
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#define DEFAULT_EGL "libEGL.so.1"
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#define DEFAULT_OGL_ES2 "libGLESv2.so.2"
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#define DEFAULT_OGL_ES_PVR "libGLES_CM.so.1"
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#define DEFAULT_OGL_ES "libGLESv1_CM.so.1"
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#endif /* SDL_VIDEO_DRIVER_RPI */
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2017-08-28 04:05:57 +02:00
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#ifdef SDL_VIDEO_STATIC_ANGLE
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#define LOAD_FUNC(NAME) \
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_this->egl_data->NAME = (void *)NAME;
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#else
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2015-06-21 17:33:46 +02:00
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#define LOAD_FUNC(NAME) \
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_this->egl_data->NAME = SDL_LoadFunction(_this->egl_data->dll_handle, #NAME); \
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if (!_this->egl_data->NAME) \
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{ \
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return SDL_SetError("Could not retrieve EGL function " #NAME); \
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}
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2017-08-28 04:05:57 +02:00
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#endif
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2016-12-29 17:49:18 +01:00
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static const char * SDL_EGL_GetErrorName(EGLint eglErrorCode)
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{
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#define SDL_EGL_ERROR_TRANSLATE(e) case e: return #e;
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switch (eglErrorCode) {
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SDL_EGL_ERROR_TRANSLATE(EGL_SUCCESS);
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SDL_EGL_ERROR_TRANSLATE(EGL_NOT_INITIALIZED);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ACCESS);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ALLOC);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_ATTRIBUTE);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CONTEXT);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CONFIG);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_CURRENT_SURFACE);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_DISPLAY);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_SURFACE);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_MATCH);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_PARAMETER);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_NATIVE_PIXMAP);
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SDL_EGL_ERROR_TRANSLATE(EGL_BAD_NATIVE_WINDOW);
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SDL_EGL_ERROR_TRANSLATE(EGL_CONTEXT_LOST);
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}
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return "";
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}
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int SDL_EGL_SetErrorEx(const char * message, const char * eglFunctionName, EGLint eglErrorCode)
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{
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const char * errorText = SDL_EGL_GetErrorName(eglErrorCode);
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char altErrorText[32];
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if (errorText[0] == '\0') {
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/* An unknown-to-SDL error code was reported. Report its hexadecimal value, instead of its name. */
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SDL_snprintf(altErrorText, SDL_arraysize(altErrorText), "0x%x", (unsigned int)eglErrorCode);
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errorText = altErrorText;
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}
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return SDL_SetError("%s (call to %s failed, reporting an error of %s)", message, eglFunctionName, errorText);
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}
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2015-06-21 17:33:46 +02:00
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/* EGL implementation of SDL OpenGL ES support */
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2017-08-02 19:22:48 +02:00
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typedef enum {
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SDL_EGL_DISPLAY_EXTENSION,
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SDL_EGL_CLIENT_EXTENSION
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} SDL_EGL_ExtensionType;
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static SDL_bool SDL_EGL_HasExtension(_THIS, SDL_EGL_ExtensionType type, const char *ext)
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2015-06-21 17:33:46 +02:00
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{
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2015-07-30 19:01:04 +02:00
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size_t ext_len;
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2017-08-02 19:22:48 +02:00
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const char *ext_override;
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const char *egl_extstr;
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const char *ext_start;
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/* Invalid extensions can be rejected early */
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if (ext == NULL || *ext == 0 || SDL_strchr(ext, ' ') != NULL) {
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/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "SDL_EGL_HasExtension: Invalid EGL extension"); */
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return SDL_FALSE;
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}
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/* Extensions can be masked with an environment variable.
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* Unlike the OpenGL override, this will use the set bits of an integer
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* to disable the extension.
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* Bit Action
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* 0 If set, the display extension is masked and not present to SDL.
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* 1 If set, the client extension is masked and not present to SDL.
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*/
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ext_override = SDL_getenv(ext);
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if (ext_override != NULL) {
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int disable_ext = SDL_atoi(ext_override);
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if (disable_ext & 0x01 && type == SDL_EGL_DISPLAY_EXTENSION) {
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return SDL_FALSE;
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} else if (disable_ext & 0x02 && type == SDL_EGL_CLIENT_EXTENSION) {
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return SDL_FALSE;
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}
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}
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2015-06-21 17:33:46 +02:00
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ext_len = SDL_strlen(ext);
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2017-08-02 19:22:48 +02:00
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switch (type) {
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case SDL_EGL_DISPLAY_EXTENSION:
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egl_extstr = _this->egl_data->eglQueryString(_this->egl_data->egl_display, EGL_EXTENSIONS);
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break;
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case SDL_EGL_CLIENT_EXTENSION:
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/* EGL_EXT_client_extensions modifies eglQueryString to return client extensions
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* if EGL_NO_DISPLAY is passed. Implementations without it are required to return NULL.
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* This behavior is included in EGL 1.5.
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*/
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egl_extstr = _this->egl_data->eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
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break;
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default:
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/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "SDL_EGL_HasExtension: Invalid extension type"); */
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return SDL_FALSE;
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}
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2015-06-21 17:33:46 +02:00
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2017-08-02 19:22:48 +02:00
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if (egl_extstr != NULL) {
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ext_start = egl_extstr;
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2015-06-21 17:33:46 +02:00
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2017-08-02 19:22:48 +02:00
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while (*ext_start) {
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ext_start = SDL_strstr(ext_start, ext);
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if (ext_start == NULL) {
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return SDL_FALSE;
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}
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/* Check if the match is not just a substring of one of the extensions */
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if (ext_start == egl_extstr || *(ext_start - 1) == ' ') {
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if (ext_start[ext_len] == ' ' || ext_start[ext_len] == 0) {
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return SDL_TRUE;
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2015-06-21 17:33:46 +02:00
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}
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2017-08-02 19:22:48 +02:00
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}
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/* If the search stopped in the middle of an extension, skip to the end of it */
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ext_start += ext_len;
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while (*ext_start != ' ' && *ext_start != 0) {
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ext_start++;
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2015-06-21 17:33:46 +02:00
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}
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}
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}
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2017-08-02 19:22:48 +02:00
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return SDL_FALSE;
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2015-06-21 17:33:46 +02:00
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}
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void *
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SDL_EGL_GetProcAddress(_THIS, const char *proc)
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{
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static char procname[1024];
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void *retval;
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/* eglGetProcAddress is busted on Android http://code.google.com/p/android/issues/detail?id=7681 */
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2017-09-22 03:38:07 +02:00
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#if !defined(SDL_VIDEO_DRIVER_ANDROID)
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2015-06-21 17:33:46 +02:00
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if (_this->egl_data->eglGetProcAddress) {
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retval = _this->egl_data->eglGetProcAddress(proc);
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if (retval) {
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return retval;
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}
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}
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#endif
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retval = SDL_LoadFunction(_this->egl_data->egl_dll_handle, proc);
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if (!retval && SDL_strlen(proc) <= 1022) {
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procname[0] = '_';
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SDL_strlcpy(procname + 1, proc, 1022);
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retval = SDL_LoadFunction(_this->egl_data->egl_dll_handle, procname);
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}
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return retval;
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}
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void
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SDL_EGL_UnloadLibrary(_THIS)
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{
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if (_this->egl_data) {
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if (_this->egl_data->egl_display) {
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_this->egl_data->eglTerminate(_this->egl_data->egl_display);
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_this->egl_data->egl_display = NULL;
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}
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if (_this->egl_data->dll_handle) {
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SDL_UnloadObject(_this->egl_data->dll_handle);
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_this->egl_data->dll_handle = NULL;
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}
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if (_this->egl_data->egl_dll_handle) {
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SDL_UnloadObject(_this->egl_data->egl_dll_handle);
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_this->egl_data->egl_dll_handle = NULL;
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}
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SDL_free(_this->egl_data);
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_this->egl_data = NULL;
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}
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}
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int
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2017-08-02 19:22:48 +02:00
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SDL_EGL_LoadLibrary(_THIS, const char *egl_path, NativeDisplayType native_display, EGLenum platform)
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2015-06-21 17:33:46 +02:00
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{
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void *dll_handle = NULL, *egl_dll_handle = NULL; /* The naming is counter intuitive, but hey, I just work here -- Gabriel */
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2016-10-04 12:38:39 +02:00
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const char *path = NULL;
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2017-08-02 19:22:48 +02:00
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int egl_version_major = 0, egl_version_minor = 0;
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2015-06-21 17:33:46 +02:00
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#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
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const char *d3dcompiler;
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#endif
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if (_this->egl_data) {
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return SDL_SetError("OpenGL ES context already created");
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}
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_this->egl_data = (struct SDL_EGL_VideoData *) SDL_calloc(1, sizeof(SDL_EGL_VideoData));
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if (!_this->egl_data) {
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return SDL_OutOfMemory();
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}
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#if SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
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d3dcompiler = SDL_GetHint(SDL_HINT_VIDEO_WIN_D3DCOMPILER);
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if (!d3dcompiler) {
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if (WIN_IsWindowsVistaOrGreater()) {
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d3dcompiler = "d3dcompiler_46.dll";
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} else {
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d3dcompiler = "d3dcompiler_43.dll";
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}
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}
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if (SDL_strcasecmp(d3dcompiler, "none") != 0) {
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2017-08-11 19:21:19 +02:00
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if (SDL_LoadObject(d3dcompiler) == NULL) {
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SDL_ClearError();
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}
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2015-06-21 17:33:46 +02:00
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}
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#endif
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2017-08-28 04:05:57 +02:00
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#ifndef SDL_VIDEO_STATIC_ANGLE
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2015-06-21 17:33:46 +02:00
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/* A funny thing, loading EGL.so first does not work on the Raspberry, so we load libGL* first */
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path = SDL_getenv("SDL_VIDEO_GL_DRIVER");
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if (path != NULL) {
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egl_dll_handle = SDL_LoadObject(path);
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}
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if (egl_dll_handle == NULL) {
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if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) {
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if (_this->gl_config.major_version > 1) {
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path = DEFAULT_OGL_ES2;
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egl_dll_handle = SDL_LoadObject(path);
|
2017-09-07 01:34:23 +02:00
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#ifdef ALT_OGL_ES2
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if (egl_dll_handle == NULL) {
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path = ALT_OGL_ES2;
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egl_dll_handle = SDL_LoadObject(path);
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}
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#endif
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2015-06-21 17:33:46 +02:00
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} else {
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path = DEFAULT_OGL_ES;
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egl_dll_handle = SDL_LoadObject(path);
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|
|
|
if (egl_dll_handle == NULL) {
|
|
|
|
path = DEFAULT_OGL_ES_PVR;
|
|
|
|
egl_dll_handle = SDL_LoadObject(path);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#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);
|
2017-09-07 01:34:23 +02:00
|
|
|
|
|
|
|
#ifdef ALT_EGL
|
|
|
|
if (dll_handle == NULL) {
|
|
|
|
path = ALT_EGL;
|
|
|
|
dll_handle = SDL_LoadObject(path);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
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();
|
|
|
|
}
|
2017-08-28 04:05:57 +02:00
|
|
|
#endif
|
2015-06-21 17:33:46 +02:00
|
|
|
|
|
|
|
_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(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);
|
2016-12-29 17:49:18 +01:00
|
|
|
LOAD_FUNC(eglGetError);
|
|
|
|
|
2017-08-02 19:22:48 +02:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (egl_version_major == 1 && egl_version_minor == 5) {
|
|
|
|
LOAD_FUNC(eglGetPlatformDisplay);
|
|
|
|
}
|
|
|
|
|
|
|
|
_this->egl_data->egl_display = EGL_NO_DISPLAY;
|
2015-06-21 17:33:46 +02:00
|
|
|
#if !defined(__WINRT__)
|
2017-08-02 19:22:48 +02:00
|
|
|
if (platform) {
|
|
|
|
if (egl_version_major == 1 && egl_version_minor == 5) {
|
2017-08-29 22:30:49 +02:00
|
|
|
_this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplay(platform, (void *)(size_t)native_display, NULL);
|
2017-08-02 19:22:48 +02:00
|
|
|
} 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) {
|
2017-08-29 22:30:49 +02:00
|
|
|
_this->egl_data->egl_display = _this->egl_data->eglGetPlatformDisplayEXT(platform, (void *)(size_t)native_display, NULL);
|
2017-08-02 19:22:48 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* 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) {
|
2015-06-21 17:33:46 +02:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SDL_EGL_ChooseConfig(_THIS)
|
|
|
|
{
|
2017-08-02 19:22:48 +02:00
|
|
|
/* 64 seems nice. */
|
2015-06-21 17:33:46 +02:00
|
|
|
EGLint attribs[64];
|
|
|
|
EGLint found_configs = 0, value;
|
2017-08-02 19:22:48 +02:00
|
|
|
#ifdef SDL_VIDEO_DRIVER_KMSDRM
|
|
|
|
/* Intel EGL on KMS/DRM (al least) returns invalid configs that confuse the bitdiff search used */
|
|
|
|
/* later in this function, so we simply use the first one when using the KMSDRM driver for now. */
|
|
|
|
EGLConfig configs[1];
|
|
|
|
#else
|
2015-06-21 17:33:46 +02:00
|
|
|
/* 128 seems even nicer here */
|
|
|
|
EGLConfig configs[128];
|
2017-08-02 19:22:48 +02:00
|
|
|
#endif
|
2015-06-21 17:33:46 +02:00
|
|
|
int i, j, best_bitdiff = -1, bitdiff;
|
2017-08-02 19:22:48 +02:00
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2015-08-01 20:16:57 +02:00
|
|
|
if (_this->gl_config.framebuffer_srgb_capable) {
|
|
|
|
#ifdef EGL_KHR_gl_colorspace
|
2017-08-02 19:22:48 +02:00
|
|
|
if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_gl_colorspace")) {
|
2015-08-01 20:16:57 +02:00
|
|
|
attribs[i++] = EGL_GL_COLORSPACE_KHR;
|
|
|
|
attribs[i++] = EGL_GL_COLORSPACE_SRGB_KHR;
|
|
|
|
} else
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
return SDL_SetError("EGL implementation does not support sRGB system framebuffers");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
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 &&
|
2017-08-02 19:22:48 +02:00
|
|
|
SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) {
|
2015-06-21 17:33:46 +02:00
|
|
|
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);
|
|
|
|
}
|
2015-08-01 20:16:57 +02:00
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
attribs[i++] = EGL_NONE;
|
2015-08-01 20:16:57 +02:00
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
if (_this->egl_data->eglChooseConfig(_this->egl_data->egl_display,
|
|
|
|
attribs,
|
|
|
|
configs, SDL_arraysize(configs),
|
|
|
|
&found_configs) == EGL_FALSE ||
|
|
|
|
found_configs == 0) {
|
2016-12-29 17:49:18 +01:00
|
|
|
return SDL_EGL_SetError("Couldn't find matching EGL config", "eglChooseConfig");
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
2015-08-01 20:16:57 +02:00
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
/* 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++ ) {
|
|
|
|
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! */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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.
|
|
|
|
*/
|
2017-08-02 19:22:48 +02:00
|
|
|
if (SDL_EGL_HasExtension(_this, SDL_EGL_DISPLAY_EXTENSION, "EGL_KHR_create_context")) {
|
2015-06-21 17:33:46 +02:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-08-25 04:57:42 +02:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
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) {
|
2016-12-29 17:49:18 +01:00
|
|
|
SDL_EGL_SetError("Could not create EGL context", "eglCreateContext");
|
2015-06-21 17:33:46 +02:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
_this->egl_data->egl_swapinterval = 0;
|
|
|
|
|
|
|
|
if (SDL_EGL_MakeCurrent(_this, egl_surface, egl_context) < 0) {
|
2016-12-29 17:49:18 +01:00
|
|
|
/* 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() */
|
2015-06-21 17:33:46 +02:00
|
|
|
SDL_EGL_DeleteContext(_this, egl_context);
|
2016-12-29 17:49:18 +01:00
|
|
|
|
|
|
|
/* Restore the SDL error */
|
|
|
|
SDL_SetError("%s", errorText);
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
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)) {
|
2016-12-29 17:49:18 +01:00
|
|
|
return SDL_EGL_SetError("Unable to make EGL context current", "eglMakeCurrent");
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2016-12-29 17:49:18 +01:00
|
|
|
return SDL_EGL_SetError("Unable to set the EGL swap interval", "eglSwapInterval");
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SDL_EGL_GetSwapInterval(_THIS)
|
|
|
|
{
|
|
|
|
if (!_this->egl_data) {
|
2016-05-11 21:10:41 +02:00
|
|
|
SDL_SetError("EGL not initialized");
|
|
|
|
return 0;
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
return _this->egl_data->egl_swapinterval;
|
|
|
|
}
|
|
|
|
|
2016-12-09 14:00:35 +01:00
|
|
|
int
|
2015-06-21 17:33:46 +02:00
|
|
|
SDL_EGL_SwapBuffers(_THIS, EGLSurface egl_surface)
|
|
|
|
{
|
2016-12-09 14:00:35 +01:00
|
|
|
if (!_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, egl_surface)) {
|
2016-12-29 17:49:18 +01:00
|
|
|
return SDL_EGL_SetError("unable to show color buffer in an OS-native window", "eglSwapBuffers");
|
2016-12-09 14:00:35 +01:00
|
|
|
}
|
|
|
|
return 0;
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
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) {
|
|
|
|
SDL_EGL_MakeCurrent(_this, NULL, NULL);
|
|
|
|
_this->egl_data->eglDestroyContext(_this->egl_data->egl_display, egl_context);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
EGLSurface *
|
|
|
|
SDL_EGL_CreateSurface(_THIS, NativeWindowType nw)
|
|
|
|
{
|
2016-12-29 17:49:18 +01:00
|
|
|
EGLSurface * surface;
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
if (SDL_EGL_ChooseConfig(_this) != 0) {
|
|
|
|
return EGL_NO_SURFACE;
|
|
|
|
}
|
|
|
|
|
2017-02-10 18:41:16 +01:00
|
|
|
#if SDL_VIDEO_DRIVER_ANDROID
|
2015-06-21 17:33:46 +02:00
|
|
|
{
|
|
|
|
/* 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);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2016-12-29 17:49:18 +01:00
|
|
|
surface = _this->egl_data->eglCreateWindowSurface(
|
2015-06-21 17:33:46 +02:00
|
|
|
_this->egl_data->egl_display,
|
|
|
|
_this->egl_data->egl_config,
|
|
|
|
nw, NULL);
|
2016-12-29 17:49:18 +01:00
|
|
|
if (surface == EGL_NO_SURFACE) {
|
|
|
|
SDL_EGL_SetError("unable to create an EGL window surface", "eglCreateWindowSurface");
|
|
|
|
}
|
|
|
|
return surface;
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
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: */
|
2017-08-05 22:10:55 +02:00
|
|
|
|