810 lines
25 KiB
C
810 lines
25 KiB
C
//========================================================================
|
|
// GLFW 3.3 EGL - www.glfw.org
|
|
//------------------------------------------------------------------------
|
|
// Copyright (c) 2002-2006 Marcus Geelnard
|
|
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.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.
|
|
//
|
|
//========================================================================
|
|
// Please use C89 style variable declarations in this file because VS 2010
|
|
//========================================================================
|
|
|
|
#include "internal.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
|
|
|
|
// Return a description of the specified EGL error
|
|
//
|
|
static const char* getEGLErrorString(EGLint error)
|
|
{
|
|
switch (error)
|
|
{
|
|
case EGL_SUCCESS:
|
|
return "Success";
|
|
case EGL_NOT_INITIALIZED:
|
|
return "EGL is not or could not be initialized";
|
|
case EGL_BAD_ACCESS:
|
|
return "EGL cannot access a requested resource";
|
|
case EGL_BAD_ALLOC:
|
|
return "EGL failed to allocate resources for the requested operation";
|
|
case EGL_BAD_ATTRIBUTE:
|
|
return "An unrecognized attribute or attribute value was passed in the attribute list";
|
|
case EGL_BAD_CONTEXT:
|
|
return "An EGLContext argument does not name a valid EGL rendering context";
|
|
case EGL_BAD_CONFIG:
|
|
return "An EGLConfig argument does not name a valid EGL frame buffer configuration";
|
|
case EGL_BAD_CURRENT_SURFACE:
|
|
return "The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid";
|
|
case EGL_BAD_DISPLAY:
|
|
return "An EGLDisplay argument does not name a valid EGL display connection";
|
|
case EGL_BAD_SURFACE:
|
|
return "An EGLSurface argument does not name a valid surface configured for GL rendering";
|
|
case EGL_BAD_MATCH:
|
|
return "Arguments are inconsistent";
|
|
case EGL_BAD_PARAMETER:
|
|
return "One or more argument values are invalid";
|
|
case EGL_BAD_NATIVE_PIXMAP:
|
|
return "A NativePixmapType argument does not refer to a valid native pixmap";
|
|
case EGL_BAD_NATIVE_WINDOW:
|
|
return "A NativeWindowType argument does not refer to a valid native window";
|
|
case EGL_CONTEXT_LOST:
|
|
return "The application must destroy all contexts and reinitialise";
|
|
default:
|
|
return "ERROR: UNKNOWN EGL ERROR";
|
|
}
|
|
}
|
|
|
|
// Returns the specified attribute of the specified EGLConfig
|
|
//
|
|
static int getEGLConfigAttrib(EGLConfig config, int attrib)
|
|
{
|
|
int value;
|
|
eglGetConfigAttrib(_glfw.egl.display, config, attrib, &value);
|
|
return value;
|
|
}
|
|
|
|
// Return the EGLConfig most closely matching the specified hints
|
|
//
|
|
static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
|
|
const _GLFWfbconfig* desired,
|
|
EGLConfig* result)
|
|
{
|
|
EGLConfig* nativeConfigs;
|
|
_GLFWfbconfig* usableConfigs;
|
|
const _GLFWfbconfig* closest;
|
|
int i, nativeCount, usableCount;
|
|
|
|
eglGetConfigs(_glfw.egl.display, NULL, 0, &nativeCount);
|
|
if (!nativeCount)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE, "EGL: No EGLConfigs returned");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
nativeConfigs = calloc(nativeCount, sizeof(EGLConfig));
|
|
eglGetConfigs(_glfw.egl.display, nativeConfigs, nativeCount, &nativeCount);
|
|
|
|
usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
|
|
usableCount = 0;
|
|
|
|
for (i = 0; i < nativeCount; i++)
|
|
{
|
|
const EGLConfig n = nativeConfigs[i];
|
|
_GLFWfbconfig* u = usableConfigs + usableCount;
|
|
|
|
// Only consider RGB(A) EGLConfigs
|
|
if (getEGLConfigAttrib(n, EGL_COLOR_BUFFER_TYPE) != EGL_RGB_BUFFER)
|
|
continue;
|
|
|
|
// Only consider window EGLConfigs
|
|
if (!(getEGLConfigAttrib(n, EGL_SURFACE_TYPE) & EGL_WINDOW_BIT))
|
|
continue;
|
|
|
|
#if defined(_GLFW_X11)
|
|
{
|
|
XVisualInfo vi = {0};
|
|
|
|
// Only consider EGLConfigs with associated Visuals
|
|
vi.visualid = getEGLConfigAttrib(n, EGL_NATIVE_VISUAL_ID);
|
|
if (!vi.visualid)
|
|
continue;
|
|
|
|
if (desired->transparent)
|
|
{
|
|
int count;
|
|
XVisualInfo* vis =
|
|
XGetVisualInfo(_glfw.x11.display, VisualIDMask, &vi, &count);
|
|
if (vis)
|
|
{
|
|
u->transparent = _glfwIsVisualTransparentX11(vis[0].visual);
|
|
XFree(vis);
|
|
}
|
|
}
|
|
}
|
|
#endif // _GLFW_X11
|
|
|
|
if (ctxconfig->client == GLFW_OPENGL_ES_API)
|
|
{
|
|
if (ctxconfig->major == 1)
|
|
{
|
|
if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES_BIT))
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES2_BIT))
|
|
continue;
|
|
}
|
|
}
|
|
else if (ctxconfig->client == GLFW_OPENGL_API)
|
|
{
|
|
if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_BIT))
|
|
continue;
|
|
}
|
|
|
|
u->redBits = getEGLConfigAttrib(n, EGL_RED_SIZE);
|
|
u->greenBits = getEGLConfigAttrib(n, EGL_GREEN_SIZE);
|
|
u->blueBits = getEGLConfigAttrib(n, EGL_BLUE_SIZE);
|
|
|
|
u->alphaBits = getEGLConfigAttrib(n, EGL_ALPHA_SIZE);
|
|
u->depthBits = getEGLConfigAttrib(n, EGL_DEPTH_SIZE);
|
|
u->stencilBits = getEGLConfigAttrib(n, EGL_STENCIL_SIZE);
|
|
|
|
u->samples = getEGLConfigAttrib(n, EGL_SAMPLES);
|
|
u->doublebuffer = desired->doublebuffer;
|
|
|
|
u->handle = (uintptr_t) n;
|
|
usableCount++;
|
|
}
|
|
|
|
closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
|
|
if (closest)
|
|
*result = (EGLConfig) closest->handle;
|
|
|
|
free(nativeConfigs);
|
|
free(usableConfigs);
|
|
|
|
return closest != NULL;
|
|
}
|
|
|
|
static void makeContextCurrentEGL(_GLFWwindow* window)
|
|
{
|
|
if (window)
|
|
{
|
|
if (!eglMakeCurrent(_glfw.egl.display,
|
|
window->context.egl.surface,
|
|
window->context.egl.surface,
|
|
window->context.egl.handle))
|
|
{
|
|
_glfwInputError(GLFW_PLATFORM_ERROR,
|
|
"EGL: Failed to make context current: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!eglMakeCurrent(_glfw.egl.display,
|
|
EGL_NO_SURFACE,
|
|
EGL_NO_SURFACE,
|
|
EGL_NO_CONTEXT))
|
|
{
|
|
_glfwInputError(GLFW_PLATFORM_ERROR,
|
|
"EGL: Failed to clear current context: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return;
|
|
}
|
|
}
|
|
|
|
_glfwPlatformSetTls(&_glfw.contextSlot, window);
|
|
}
|
|
|
|
static void swapBuffersEGL(_GLFWwindow* window)
|
|
{
|
|
if (window != _glfwPlatformGetTls(&_glfw.contextSlot))
|
|
{
|
|
_glfwInputError(GLFW_PLATFORM_ERROR,
|
|
"EGL: The context must be current on the calling thread when swapping buffers");
|
|
return;
|
|
}
|
|
|
|
#if defined(_GLFW_WAYLAND)
|
|
// NOTE: Swapping buffers on a hidden window on Wayland makes it visible
|
|
if (!window->wl.visible)
|
|
return;
|
|
#endif
|
|
|
|
eglSwapBuffers(_glfw.egl.display, window->context.egl.surface);
|
|
}
|
|
|
|
static void swapIntervalEGL(int interval)
|
|
{
|
|
eglSwapInterval(_glfw.egl.display, interval);
|
|
}
|
|
|
|
static int extensionSupportedEGL(const char* extension)
|
|
{
|
|
const char* extensions = eglQueryString(_glfw.egl.display, EGL_EXTENSIONS);
|
|
if (extensions)
|
|
{
|
|
if (_glfwStringInExtensionString(extension, extensions))
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
static GLFWglproc getProcAddressEGL(const char* procname)
|
|
{
|
|
_GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot);
|
|
|
|
if (window->context.egl.client)
|
|
{
|
|
GLFWglproc proc = (GLFWglproc) _glfw_dlsym(window->context.egl.client,
|
|
procname);
|
|
if (proc)
|
|
return proc;
|
|
}
|
|
|
|
return eglGetProcAddress(procname);
|
|
}
|
|
|
|
static void destroyContextEGL(_GLFWwindow* window)
|
|
{
|
|
#if defined(_GLFW_X11)
|
|
// NOTE: Do not unload libGL.so.1 while the X11 display is still open,
|
|
// as it will make XCloseDisplay segfault
|
|
if (window->context.client != GLFW_OPENGL_API)
|
|
#endif // _GLFW_X11
|
|
{
|
|
if (window->context.egl.client)
|
|
{
|
|
_glfw_dlclose(window->context.egl.client);
|
|
window->context.egl.client = NULL;
|
|
}
|
|
}
|
|
|
|
if (window->context.egl.surface)
|
|
{
|
|
eglDestroySurface(_glfw.egl.display, window->context.egl.surface);
|
|
window->context.egl.surface = EGL_NO_SURFACE;
|
|
}
|
|
|
|
if (window->context.egl.handle)
|
|
{
|
|
eglDestroyContext(_glfw.egl.display, window->context.egl.handle);
|
|
window->context.egl.handle = EGL_NO_CONTEXT;
|
|
}
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW internal API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
// Initialize EGL
|
|
//
|
|
GLFWbool _glfwInitEGL(void)
|
|
{
|
|
int i;
|
|
const char* sonames[] =
|
|
{
|
|
#if defined(_GLFW_EGL_LIBRARY)
|
|
_GLFW_EGL_LIBRARY,
|
|
#elif defined(_GLFW_WIN32)
|
|
"libEGL.dll",
|
|
"EGL.dll",
|
|
#elif defined(_GLFW_COCOA)
|
|
"libEGL.dylib",
|
|
#elif defined(__CYGWIN__)
|
|
"libEGL-1.so",
|
|
#elif defined(__OpenBSD__) || defined(__NetBSD__)
|
|
"libEGL.so",
|
|
#else
|
|
"libEGL.so.1",
|
|
#endif
|
|
NULL
|
|
};
|
|
|
|
if (_glfw.egl.handle)
|
|
return GLFW_TRUE;
|
|
|
|
for (i = 0; sonames[i]; i++)
|
|
{
|
|
_glfw.egl.handle = _glfw_dlopen(sonames[i]);
|
|
if (_glfw.egl.handle)
|
|
break;
|
|
}
|
|
|
|
if (!_glfw.egl.handle)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Library not found");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
_glfw.egl.prefix = (strncmp(sonames[i], "lib", 3) == 0);
|
|
|
|
_glfw.egl.GetConfigAttrib = (PFN_eglGetConfigAttrib)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglGetConfigAttrib");
|
|
_glfw.egl.GetConfigs = (PFN_eglGetConfigs)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglGetConfigs");
|
|
_glfw.egl.GetDisplay = (PFN_eglGetDisplay)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglGetDisplay");
|
|
_glfw.egl.GetError = (PFN_eglGetError)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglGetError");
|
|
_glfw.egl.Initialize = (PFN_eglInitialize)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglInitialize");
|
|
_glfw.egl.Terminate = (PFN_eglTerminate)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglTerminate");
|
|
_glfw.egl.BindAPI = (PFN_eglBindAPI)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglBindAPI");
|
|
_glfw.egl.CreateContext = (PFN_eglCreateContext)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglCreateContext");
|
|
_glfw.egl.DestroySurface = (PFN_eglDestroySurface)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglDestroySurface");
|
|
_glfw.egl.DestroyContext = (PFN_eglDestroyContext)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglDestroyContext");
|
|
_glfw.egl.CreateWindowSurface = (PFN_eglCreateWindowSurface)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglCreateWindowSurface");
|
|
_glfw.egl.MakeCurrent = (PFN_eglMakeCurrent)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglMakeCurrent");
|
|
_glfw.egl.SwapBuffers = (PFN_eglSwapBuffers)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglSwapBuffers");
|
|
_glfw.egl.SwapInterval = (PFN_eglSwapInterval)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglSwapInterval");
|
|
_glfw.egl.QueryString = (PFN_eglQueryString)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglQueryString");
|
|
_glfw.egl.GetProcAddress = (PFN_eglGetProcAddress)
|
|
_glfw_dlsym(_glfw.egl.handle, "eglGetProcAddress");
|
|
|
|
if (!_glfw.egl.GetConfigAttrib ||
|
|
!_glfw.egl.GetConfigs ||
|
|
!_glfw.egl.GetDisplay ||
|
|
!_glfw.egl.GetError ||
|
|
!_glfw.egl.Initialize ||
|
|
!_glfw.egl.Terminate ||
|
|
!_glfw.egl.BindAPI ||
|
|
!_glfw.egl.CreateContext ||
|
|
!_glfw.egl.DestroySurface ||
|
|
!_glfw.egl.DestroyContext ||
|
|
!_glfw.egl.CreateWindowSurface ||
|
|
!_glfw.egl.MakeCurrent ||
|
|
!_glfw.egl.SwapBuffers ||
|
|
!_glfw.egl.SwapInterval ||
|
|
!_glfw.egl.QueryString ||
|
|
!_glfw.egl.GetProcAddress)
|
|
{
|
|
_glfwInputError(GLFW_PLATFORM_ERROR,
|
|
"EGL: Failed to load required entry points");
|
|
|
|
_glfwTerminateEGL();
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
_glfw.egl.display = eglGetDisplay(_GLFW_EGL_NATIVE_DISPLAY);
|
|
if (_glfw.egl.display == EGL_NO_DISPLAY)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"EGL: Failed to get EGL display: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
|
|
_glfwTerminateEGL();
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (!eglInitialize(_glfw.egl.display, &_glfw.egl.major, &_glfw.egl.minor))
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"EGL: Failed to initialize EGL: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
|
|
_glfwTerminateEGL();
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
_glfw.egl.KHR_create_context =
|
|
extensionSupportedEGL("EGL_KHR_create_context");
|
|
_glfw.egl.KHR_create_context_no_error =
|
|
extensionSupportedEGL("EGL_KHR_create_context_no_error");
|
|
_glfw.egl.KHR_gl_colorspace =
|
|
extensionSupportedEGL("EGL_KHR_gl_colorspace");
|
|
_glfw.egl.KHR_get_all_proc_addresses =
|
|
extensionSupportedEGL("EGL_KHR_get_all_proc_addresses");
|
|
_glfw.egl.KHR_context_flush_control =
|
|
extensionSupportedEGL("EGL_KHR_context_flush_control");
|
|
_glfw.egl.EXT_present_opaque =
|
|
extensionSupportedEGL("EGL_EXT_present_opaque");
|
|
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
// Terminate EGL
|
|
//
|
|
void _glfwTerminateEGL(void)
|
|
{
|
|
if (_glfw.egl.display)
|
|
{
|
|
eglTerminate(_glfw.egl.display);
|
|
_glfw.egl.display = EGL_NO_DISPLAY;
|
|
}
|
|
|
|
if (_glfw.egl.handle)
|
|
{
|
|
_glfw_dlclose(_glfw.egl.handle);
|
|
_glfw.egl.handle = NULL;
|
|
}
|
|
}
|
|
|
|
#define setAttrib(a, v) \
|
|
{ \
|
|
assert(((size_t) index + 1) < sizeof(attribs) / sizeof(attribs[0])); \
|
|
attribs[index++] = a; \
|
|
attribs[index++] = v; \
|
|
}
|
|
|
|
// Create the OpenGL or OpenGL ES context
|
|
//
|
|
GLFWbool _glfwCreateContextEGL(_GLFWwindow* window,
|
|
const _GLFWctxconfig* ctxconfig,
|
|
const _GLFWfbconfig* fbconfig)
|
|
{
|
|
EGLint attribs[40];
|
|
EGLConfig config;
|
|
EGLContext share = NULL;
|
|
int index = 0;
|
|
|
|
if (!_glfw.egl.display)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE, "EGL: API not available");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (ctxconfig->share)
|
|
share = ctxconfig->share->context.egl.handle;
|
|
|
|
if (!chooseEGLConfig(ctxconfig, fbconfig, &config))
|
|
{
|
|
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
|
|
"EGL: Failed to find a suitable EGLConfig");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (ctxconfig->client == GLFW_OPENGL_ES_API)
|
|
{
|
|
if (!eglBindAPI(EGL_OPENGL_ES_API))
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"EGL: Failed to bind OpenGL ES: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!eglBindAPI(EGL_OPENGL_API))
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"EGL: Failed to bind OpenGL: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
|
|
if (_glfw.egl.KHR_create_context)
|
|
{
|
|
int mask = 0, flags = 0;
|
|
|
|
if (ctxconfig->client == GLFW_OPENGL_API)
|
|
{
|
|
if (ctxconfig->forward)
|
|
flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
|
|
|
|
if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
|
|
mask |= EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
|
|
else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
|
|
mask |= EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR;
|
|
}
|
|
|
|
if (ctxconfig->debug)
|
|
flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
|
|
|
|
if (ctxconfig->robustness)
|
|
{
|
|
if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION)
|
|
{
|
|
setAttrib(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR,
|
|
EGL_NO_RESET_NOTIFICATION_KHR);
|
|
}
|
|
else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET)
|
|
{
|
|
setAttrib(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR,
|
|
EGL_LOSE_CONTEXT_ON_RESET_KHR);
|
|
}
|
|
|
|
flags |= EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR;
|
|
}
|
|
|
|
if (ctxconfig->noerror)
|
|
{
|
|
if (_glfw.egl.KHR_create_context_no_error)
|
|
setAttrib(EGL_CONTEXT_OPENGL_NO_ERROR_KHR, GLFW_TRUE);
|
|
}
|
|
|
|
if (ctxconfig->major != 1 || ctxconfig->minor != 0)
|
|
{
|
|
setAttrib(EGL_CONTEXT_MAJOR_VERSION_KHR, ctxconfig->major);
|
|
setAttrib(EGL_CONTEXT_MINOR_VERSION_KHR, ctxconfig->minor);
|
|
}
|
|
|
|
if (mask)
|
|
setAttrib(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, mask);
|
|
|
|
if (flags)
|
|
setAttrib(EGL_CONTEXT_FLAGS_KHR, flags);
|
|
}
|
|
else
|
|
{
|
|
if (ctxconfig->client == GLFW_OPENGL_ES_API)
|
|
setAttrib(EGL_CONTEXT_CLIENT_VERSION, ctxconfig->major);
|
|
}
|
|
|
|
if (_glfw.egl.KHR_context_flush_control)
|
|
{
|
|
if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_NONE)
|
|
{
|
|
setAttrib(EGL_CONTEXT_RELEASE_BEHAVIOR_KHR,
|
|
EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR);
|
|
}
|
|
else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH)
|
|
{
|
|
setAttrib(EGL_CONTEXT_RELEASE_BEHAVIOR_KHR,
|
|
EGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR);
|
|
}
|
|
}
|
|
|
|
setAttrib(EGL_NONE, EGL_NONE);
|
|
|
|
window->context.egl.handle = eglCreateContext(_glfw.egl.display,
|
|
config, share, attribs);
|
|
|
|
if (window->context.egl.handle == EGL_NO_CONTEXT)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"EGL: Failed to create context: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
// Set up attributes for surface creation
|
|
index = 0;
|
|
|
|
if (fbconfig->sRGB)
|
|
{
|
|
if (_glfw.egl.KHR_gl_colorspace)
|
|
setAttrib(EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR);
|
|
}
|
|
|
|
if (!fbconfig->doublebuffer)
|
|
setAttrib(EGL_RENDER_BUFFER, EGL_SINGLE_BUFFER);
|
|
|
|
if (_glfw.egl.EXT_present_opaque)
|
|
setAttrib(EGL_PRESENT_OPAQUE_EXT, !fbconfig->transparent);
|
|
|
|
setAttrib(EGL_NONE, EGL_NONE);
|
|
|
|
window->context.egl.surface =
|
|
eglCreateWindowSurface(_glfw.egl.display,
|
|
config,
|
|
_GLFW_EGL_NATIVE_WINDOW,
|
|
attribs);
|
|
if (window->context.egl.surface == EGL_NO_SURFACE)
|
|
{
|
|
_glfwInputError(GLFW_PLATFORM_ERROR,
|
|
"EGL: Failed to create window surface: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
window->context.egl.config = config;
|
|
|
|
// Load the appropriate client library
|
|
if (!_glfw.egl.KHR_get_all_proc_addresses)
|
|
{
|
|
int i;
|
|
const char** sonames;
|
|
const char* es1sonames[] =
|
|
{
|
|
#if defined(_GLFW_GLESV1_LIBRARY)
|
|
_GLFW_GLESV1_LIBRARY,
|
|
#elif defined(_GLFW_WIN32)
|
|
"GLESv1_CM.dll",
|
|
"libGLES_CM.dll",
|
|
#elif defined(_GLFW_COCOA)
|
|
"libGLESv1_CM.dylib",
|
|
#elif defined(__OpenBSD__) || defined(__NetBSD__)
|
|
"libGLESv1_CM.so",
|
|
#else
|
|
"libGLESv1_CM.so.1",
|
|
"libGLES_CM.so.1",
|
|
#endif
|
|
NULL
|
|
};
|
|
const char* es2sonames[] =
|
|
{
|
|
#if defined(_GLFW_GLESV2_LIBRARY)
|
|
_GLFW_GLESV2_LIBRARY,
|
|
#elif defined(_GLFW_WIN32)
|
|
"GLESv2.dll",
|
|
"libGLESv2.dll",
|
|
#elif defined(_GLFW_COCOA)
|
|
"libGLESv2.dylib",
|
|
#elif defined(__CYGWIN__)
|
|
"libGLESv2-2.so",
|
|
#elif defined(__OpenBSD__) || defined(__NetBSD__)
|
|
"libGLESv2.so",
|
|
#else
|
|
"libGLESv2.so.2",
|
|
#endif
|
|
NULL
|
|
};
|
|
const char* glsonames[] =
|
|
{
|
|
#if defined(_GLFW_OPENGL_LIBRARY)
|
|
_GLFW_OPENGL_LIBRARY,
|
|
#elif defined(_GLFW_WIN32)
|
|
#elif defined(_GLFW_COCOA)
|
|
#elif defined(__OpenBSD__) || defined(__NetBSD__)
|
|
"libGL.so",
|
|
#else
|
|
"libGL.so.1",
|
|
#endif
|
|
NULL
|
|
};
|
|
|
|
if (ctxconfig->client == GLFW_OPENGL_ES_API)
|
|
{
|
|
if (ctxconfig->major == 1)
|
|
sonames = es1sonames;
|
|
else
|
|
sonames = es2sonames;
|
|
}
|
|
else
|
|
sonames = glsonames;
|
|
|
|
for (i = 0; sonames[i]; i++)
|
|
{
|
|
// HACK: Match presence of lib prefix to increase chance of finding
|
|
// a matching pair in the jungle that is Win32 EGL/GLES
|
|
if (_glfw.egl.prefix != (strncmp(sonames[i], "lib", 3) == 0))
|
|
continue;
|
|
|
|
window->context.egl.client = _glfw_dlopen(sonames[i]);
|
|
if (window->context.egl.client)
|
|
break;
|
|
}
|
|
|
|
if (!window->context.egl.client)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"EGL: Failed to load client library");
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
|
|
window->context.makeCurrent = makeContextCurrentEGL;
|
|
window->context.swapBuffers = swapBuffersEGL;
|
|
window->context.swapInterval = swapIntervalEGL;
|
|
window->context.extensionSupported = extensionSupportedEGL;
|
|
window->context.getProcAddress = getProcAddressEGL;
|
|
window->context.destroy = destroyContextEGL;
|
|
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
#undef setAttrib
|
|
|
|
// Returns the Visual and depth of the chosen EGLConfig
|
|
//
|
|
#if defined(_GLFW_X11)
|
|
GLFWbool _glfwChooseVisualEGL(const _GLFWwndconfig* wndconfig,
|
|
const _GLFWctxconfig* ctxconfig,
|
|
const _GLFWfbconfig* fbconfig,
|
|
Visual** visual, int* depth)
|
|
{
|
|
XVisualInfo* result;
|
|
XVisualInfo desired;
|
|
EGLConfig native;
|
|
EGLint visualID = 0, count = 0;
|
|
const long vimask = VisualScreenMask | VisualIDMask;
|
|
|
|
if (!chooseEGLConfig(ctxconfig, fbconfig, &native))
|
|
{
|
|
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
|
|
"EGL: Failed to find a suitable EGLConfig");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
eglGetConfigAttrib(_glfw.egl.display, native,
|
|
EGL_NATIVE_VISUAL_ID, &visualID);
|
|
|
|
desired.screen = _glfw.x11.screen;
|
|
desired.visualid = visualID;
|
|
|
|
result = XGetVisualInfo(_glfw.x11.display, vimask, &desired, &count);
|
|
if (!result)
|
|
{
|
|
_glfwInputError(GLFW_PLATFORM_ERROR,
|
|
"EGL: Failed to retrieve Visual for EGLConfig");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
*visual = result->visual;
|
|
*depth = result->depth;
|
|
|
|
XFree(result);
|
|
return GLFW_TRUE;
|
|
}
|
|
#endif // _GLFW_X11
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW native API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
GLFWAPI EGLDisplay glfwGetEGLDisplay(void)
|
|
{
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(EGL_NO_DISPLAY);
|
|
return _glfw.egl.display;
|
|
}
|
|
|
|
GLFWAPI EGLContext glfwGetEGLContext(GLFWwindow* handle)
|
|
{
|
|
_GLFWwindow* window = (_GLFWwindow*) handle;
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(EGL_NO_CONTEXT);
|
|
|
|
if (window->context.source != GLFW_EGL_CONTEXT_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return EGL_NO_CONTEXT;
|
|
}
|
|
|
|
return window->context.egl.handle;
|
|
}
|
|
|
|
GLFWAPI EGLSurface glfwGetEGLSurface(GLFWwindow* handle)
|
|
{
|
|
_GLFWwindow* window = (_GLFWwindow*) handle;
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(EGL_NO_SURFACE);
|
|
|
|
if (window->context.source != GLFW_EGL_CONTEXT_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return EGL_NO_SURFACE;
|
|
}
|
|
|
|
return window->context.egl.surface;
|
|
}
|
|
|