| //======================================================================== |
| // GLFW 3.3 EGLDevice - www.glfw.org |
| //------------------------------------------------------------------------ |
| // Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. |
| // |
| // 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 "internal.h" |
| |
| #include <linux/limits.h> |
| |
| static GLFWbool initializeExtensions(void) |
| { |
| _glfw.egldevice.QueryDevicesEXT = |
| (PFNEGLQUERYDEVICESEXTPROC) |
| eglGetProcAddress("eglQueryDevicesEXT"); |
| _glfw.egldevice.QueryDeviceStringEXT = |
| (PFNEGLQUERYDEVICESTRINGEXTPROC) |
| eglGetProcAddress("eglQueryDeviceStringEXT"); |
| _glfw.egldevice.GetPlatformDisplayEXT = |
| (PFNEGLGETPLATFORMDISPLAYEXTPROC) |
| eglGetProcAddress("eglGetPlatformDisplayEXT"); |
| _glfw.egldevice.GetOutputLayersEXT = |
| (PFNEGLGETOUTPUTLAYERSEXTPROC) |
| eglGetProcAddress("eglGetOutputLayersEXT"); |
| _glfw.egldevice.CreateStreamKHR = |
| (PFNEGLCREATESTREAMKHRPROC) |
| eglGetProcAddress("eglCreateStreamKHR"); |
| _glfw.egldevice.DestroyStreamKHR = |
| (PFNEGLDESTROYSTREAMKHRPROC) |
| eglGetProcAddress("eglDestroyStreamKHR"); |
| _glfw.egldevice.StreamConsumerOutputEXT = |
| (PFNEGLSTREAMCONSUMEROUTPUTEXTPROC) |
| eglGetProcAddress("eglStreamConsumerOutputEXT"); |
| _glfw.egldevice.CreateStreamProducerSurfaceKHR = |
| (PFNEGLCREATESTREAMPRODUCERSURFACEKHRPROC) |
| eglGetProcAddress("eglCreateStreamProducerSurfaceKHR"); |
| |
| if(!_glfw.egldevice.QueryDevicesEXT || |
| !_glfw.egldevice.QueryDeviceStringEXT || |
| !_glfw.egldevice.GetPlatformDisplayEXT || |
| !_glfw.egldevice.GetOutputLayersEXT || |
| !_glfw.egldevice.CreateStreamKHR || |
| !_glfw.egldevice.DestroyStreamKHR || |
| !_glfw.egldevice.StreamConsumerOutputEXT || |
| !_glfw.egldevice.CreateStreamProducerSurfaceKHR) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Failed to find required EGL extension functions"); |
| return GLFW_FALSE; |
| } |
| return GLFW_TRUE; |
| } |
| |
| static EGLDeviceEXT getEGLDevice(void) |
| { |
| int i, num_devs; |
| EGLDeviceEXT* egl_devs, eglDevice; |
| const char *clientExtensionString; |
| |
| eglDevice = EGL_NO_DEVICE_EXT; |
| clientExtensionString = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS); |
| if (!_glfwStringInExtensionString("EGL_EXT_device_base", |
| clientExtensionString) && |
| (!_glfwStringInExtensionString("EGL_EXT_device_enumeration", |
| clientExtensionString) || |
| !_glfwStringInExtensionString("EGL_EXT_device_query", |
| clientExtensionString))) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: EGL_EXT_device base extensions not found"); |
| } |
| |
| if (!eglQueryDevicesEXT(0, NULL, &num_devs)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Falied to query EGLDevice"); |
| } |
| if (num_devs < 1) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: No devices found"); |
| } |
| |
| egl_devs = calloc(sizeof(EGLDeviceEXT), num_devs); |
| if (egl_devs == NULL) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Unable to allocate memory for device storage"); |
| } |
| |
| // Select suitable device |
| if (!eglQueryDevicesEXT(num_devs, egl_devs, &num_devs)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Failed to query EGL devices"); |
| } |
| |
| for (i = 0; i <= num_devs; i++) |
| { |
| const char* deviceExtensionString; |
| |
| deviceExtensionString = eglQueryDeviceStringEXT(egl_devs[i], EGL_EXTENSIONS); |
| if (_glfwStringInExtensionString("EGL_EXT_device_drm", |
| deviceExtensionString)) |
| { |
| eglDevice = egl_devs[i]; |
| break; |
| } |
| } |
| |
| free(egl_devs); |
| |
| if (eglDevice == EGL_NO_DEVICE_EXT) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Missing required extension EGL_EXT_device_drm"); |
| } |
| return eglDevice; |
| } |
| |
| static int getDRMFd(EGLDeviceEXT eglDevice) |
| { |
| int drm_fd; |
| const char* drmName; |
| |
| drmName = eglQueryDeviceStringEXT(eglDevice, EGL_DRM_DEVICE_FILE_EXT); |
| if (!drmName || (strnlen(drmName, PATH_MAX) == 0)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Couldn't obtain device file from 0x%p", |
| (void*)(uintptr_t)eglDevice); |
| } |
| |
| drm_fd = drmOpen(drmName, NULL); |
| if (drm_fd < 0) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Couldn't open device file '%s'", drmName); |
| } |
| |
| return drm_fd; |
| } |
| |
| static GLFWbool initEGLDisplay(EGLDeviceEXT egl_dev, int drm_fd) |
| { |
| const char* displayExtensionString; |
| EGLint displayAttribs[] = { |
| EGL_DRM_MASTER_FD_EXT, |
| drm_fd, |
| EGL_NONE |
| }; |
| |
| _glfw.egl.display = eglGetPlatformDisplayEXT(EGL_PLATFORM_DEVICE_EXT, |
| (void*)egl_dev, |
| displayAttribs); |
| if (_glfw.egl.display == EGL_NO_DISPLAY) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Couldn't obtain EGLDisplay for device"); |
| return GLFW_FALSE; |
| } |
| |
| if (!eglInitialize(_glfw.egl.display, &_glfw.egl.major, &_glfw.egl.minor)) |
| { |
| _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Failed to initialize EGL"); |
| return GLFW_FALSE; |
| } |
| |
| // Check for stream_consumer_egloutput + output_drm support |
| displayExtensionString = eglQueryString(_glfw.egl.display, EGL_EXTENSIONS); |
| if (!_glfwStringInExtensionString("EGL_EXT_output_base", |
| displayExtensionString)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Missing required extension EGL_EXT_output_base"); |
| return GLFW_FALSE; |
| } |
| |
| if (!_glfwStringInExtensionString("EGL_EXT_output_drm", |
| displayExtensionString)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Missing required extension EGL_EXT_output_drm"); |
| return GLFW_FALSE; |
| } |
| |
| if (!_glfwStringInExtensionString("EGL_KHR_stream", |
| displayExtensionString)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Missing required extension EGL_KHR_stream"); |
| return GLFW_FALSE; |
| } |
| |
| if (!_glfwStringInExtensionString("EGL_KHR_stream_producer_eglsurface", |
| displayExtensionString)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Missing required extension EGL_KHR_stream_producer_eglsurface"); |
| return GLFW_FALSE; |
| } |
| if (!_glfwStringInExtensionString("EGL_EXT_stream_consumer_egloutput", |
| displayExtensionString)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "EGLDevice: Missing required extension EGL_EXT_stream_consumer_egloutput"); |
| return GLFW_FALSE; |
| } |
| |
| return GLFW_TRUE; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// GLFW platform API ////// |
| ////////////////////////////////////////////////////////////////////////// |
| |
| int _glfwPlatformInit(void) |
| { |
| EGLDeviceEXT egl_dev; |
| int drm_fd; |
| |
| // Initialize EGL |
| if (!_glfwInitEGL()) |
| return GLFW_FALSE; |
| |
| // Initialize global data and extension function pointers |
| if (!initializeExtensions()) |
| return GLFW_FALSE; |
| |
| // Query and Obtain EGLDevice |
| egl_dev = getEGLDevice(); |
| |
| // Obtain and open DRM device file |
| drm_fd = getDRMFd(egl_dev); |
| |
| // Store for use later |
| _glfw.egldevice.drmFd = drm_fd; |
| |
| // Obtain EGLDisplay |
| if (!initEGLDisplay(egl_dev, drm_fd)) |
| return GLFW_FALSE; |
| |
| _glfwInitTimerPOSIX(); |
| |
| _glfwPollMonitorsEGLDevice(); |
| |
| return GLFW_TRUE; |
| } |
| |
| void _glfwPlatformTerminate(void) |
| { |
| _glfwTerminateEGL(); |
| _glfwTerminateJoysticksLinux(); |
| } |
| |
| const char* _glfwPlatformGetVersionString(void) |
| { |
| return _GLFW_VERSION_NUMBER "EGLDevice EGL" |
| #if defined(_GLFW_BUILD_DLL) |
| " shared" |
| #endif |
| ; |
| } |
| |
