fb98aa650d
This only changes some formatting, whitespace, etc.. There are no changes to the functionality. Let me know if you don't like some of those changes.
795 lines
24 KiB
C
Vendored
795 lines
24 KiB
C
Vendored
//========================================================================
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// GLFW 3.3 EGL - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2016 Camilla Löwy <elmindreda@glfw.org>
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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
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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// Return a description of the specified EGL error
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//
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static const char* getEGLErrorString(EGLint error)
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{
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switch (error)
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{
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case EGL_SUCCESS:
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return "Success";
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case EGL_NOT_INITIALIZED:
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return "EGL is not or could not be initialized";
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case EGL_BAD_ACCESS:
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return "EGL cannot access a requested resource";
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case EGL_BAD_ALLOC:
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return "EGL failed to allocate resources for the requested operation";
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case EGL_BAD_ATTRIBUTE:
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return "An unrecognized attribute or attribute value was passed in the attribute list";
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case EGL_BAD_CONTEXT:
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return "An EGLContext argument does not name a valid EGL rendering context";
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case EGL_BAD_CONFIG:
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return "An EGLConfig argument does not name a valid EGL frame buffer configuration";
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case EGL_BAD_CURRENT_SURFACE:
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return "The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid";
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case EGL_BAD_DISPLAY:
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return "An EGLDisplay argument does not name a valid EGL display connection";
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case EGL_BAD_SURFACE:
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return "An EGLSurface argument does not name a valid surface configured for GL rendering";
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case EGL_BAD_MATCH:
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return "Arguments are inconsistent";
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case EGL_BAD_PARAMETER:
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return "One or more argument values are invalid";
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case EGL_BAD_NATIVE_PIXMAP:
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return "A NativePixmapType argument does not refer to a valid native pixmap";
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case EGL_BAD_NATIVE_WINDOW:
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return "A NativeWindowType argument does not refer to a valid native window";
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case EGL_CONTEXT_LOST:
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return "The application must destroy all contexts and reinitialise";
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default:
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return "ERROR: UNKNOWN EGL ERROR";
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}
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}
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// Returns the specified attribute of the specified EGLConfig
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//
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static int getEGLConfigAttrib(EGLConfig config, int attrib)
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{
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int value;
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eglGetConfigAttrib(_glfw.egl.display, config, attrib, &value);
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return value;
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}
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// Return the EGLConfig most closely matching the specified hints
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//
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static bool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
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const _GLFWfbconfig* desired,
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EGLConfig* result)
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{
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EGLConfig* nativeConfigs;
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_GLFWfbconfig* usableConfigs;
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const _GLFWfbconfig* closest;
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int i, nativeCount, usableCount;
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eglGetConfigs(_glfw.egl.display, NULL, 0, &nativeCount);
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if (!nativeCount)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE, "EGL: No EGLConfigs returned");
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return false;
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}
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nativeConfigs = calloc(nativeCount, sizeof(EGLConfig));
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eglGetConfigs(_glfw.egl.display, nativeConfigs, nativeCount, &nativeCount);
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usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
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usableCount = 0;
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for (i = 0; i < nativeCount; i++)
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{
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const EGLConfig n = nativeConfigs[i];
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_GLFWfbconfig* u = usableConfigs + usableCount;
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// Only consider RGB(A) EGLConfigs
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if (getEGLConfigAttrib(n, EGL_COLOR_BUFFER_TYPE) != EGL_RGB_BUFFER)
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continue;
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// Only consider window EGLConfigs
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if (!(getEGLConfigAttrib(n, EGL_SURFACE_TYPE) & EGL_WINDOW_BIT))
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continue;
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#if defined(_GLFW_X11)
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XVisualInfo vi = {0};
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// Only consider EGLConfigs with associated Visuals
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vi.visualid = getEGLConfigAttrib(n, EGL_NATIVE_VISUAL_ID);
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if (!vi.visualid)
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continue;
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if (desired->transparent)
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{
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int count;
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XVisualInfo* vis = XGetVisualInfo(_glfw.x11.display,
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VisualIDMask, &vi,
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&count);
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if (vis)
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{
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u->transparent = _glfwIsVisualTransparentX11(vis[0].visual);
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XFree(vis);
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}
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}
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#endif // _GLFW_X11
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if (ctxconfig->client == GLFW_OPENGL_ES_API)
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{
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if (ctxconfig->major == 1)
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{
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if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES_BIT))
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continue;
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}
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else
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{
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if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES2_BIT))
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continue;
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}
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}
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else if (ctxconfig->client == GLFW_OPENGL_API)
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{
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if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_BIT))
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continue;
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}
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u->redBits = getEGLConfigAttrib(n, EGL_RED_SIZE);
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u->greenBits = getEGLConfigAttrib(n, EGL_GREEN_SIZE);
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u->blueBits = getEGLConfigAttrib(n, EGL_BLUE_SIZE);
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u->alphaBits = getEGLConfigAttrib(n, EGL_ALPHA_SIZE);
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u->depthBits = getEGLConfigAttrib(n, EGL_DEPTH_SIZE);
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u->stencilBits = getEGLConfigAttrib(n, EGL_STENCIL_SIZE);
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u->samples = getEGLConfigAttrib(n, EGL_SAMPLES);
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u->doublebuffer = true;
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u->handle = (uintptr_t) n;
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usableCount++;
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}
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closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
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if (closest)
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*result = (EGLConfig) closest->handle;
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free(nativeConfigs);
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free(usableConfigs);
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return closest != NULL;
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}
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static void makeContextCurrentEGL(_GLFWwindow* window)
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{
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if (window)
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{
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if (!eglMakeCurrent(_glfw.egl.display,
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window->context.egl.surface,
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window->context.egl.surface,
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window->context.egl.handle))
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"EGL: Failed to make context current: %s",
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getEGLErrorString(eglGetError()));
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return;
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}
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}
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else
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{
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if (!eglMakeCurrent(_glfw.egl.display,
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EGL_NO_SURFACE,
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EGL_NO_SURFACE,
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EGL_NO_CONTEXT))
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"EGL: Failed to clear current context: %s",
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getEGLErrorString(eglGetError()));
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return;
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}
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}
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_glfwPlatformSetTls(&_glfw.contextSlot, window);
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}
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static void swapBuffersEGL(_GLFWwindow* window)
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{
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if (window != _glfwPlatformGetTls(&_glfw.contextSlot))
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"EGL: The context must be current on the calling thread when swapping buffers");
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return;
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}
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eglSwapBuffers(_glfw.egl.display, window->context.egl.surface);
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}
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static void swapIntervalEGL(int interval)
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{
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eglSwapInterval(_glfw.egl.display, interval);
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}
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static int extensionSupportedEGL(const char* extension)
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{
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const char* extensions = eglQueryString(_glfw.egl.display, EGL_EXTENSIONS);
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if (extensions)
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{
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if (_glfwStringInExtensionString(extension, extensions))
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return true;
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}
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return false;
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}
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static GLFWglproc getProcAddressEGL(const char* procname)
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{
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_GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot);
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if (window->context.egl.client)
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{
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GLFWglproc proc = (GLFWglproc) _glfw_dlsym(window->context.egl.client,
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procname);
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if (proc)
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return proc;
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}
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return eglGetProcAddress(procname);
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}
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static void destroyContextEGL(_GLFWwindow* window)
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{
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#if defined(_GLFW_X11)
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// NOTE: Do not unload libGL.so.1 while the X11 display is still open,
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// as it will make XCloseDisplay segfault
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if (window->context.client != GLFW_OPENGL_API)
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#endif // _GLFW_X11
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{
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if (window->context.egl.client)
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{
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_glfw_dlclose(window->context.egl.client);
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window->context.egl.client = NULL;
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}
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}
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if (window->context.egl.surface)
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{
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eglDestroySurface(_glfw.egl.display, window->context.egl.surface);
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window->context.egl.surface = EGL_NO_SURFACE;
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}
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if (window->context.egl.handle)
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{
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eglDestroyContext(_glfw.egl.display, window->context.egl.handle);
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window->context.egl.handle = EGL_NO_CONTEXT;
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}
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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// Initialize EGL
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//
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bool _glfwInitEGL(void)
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{
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int i;
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const char* sonames[] =
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{
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#if defined(_GLFW_EGL_LIBRARY)
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_GLFW_EGL_LIBRARY,
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#elif defined(_GLFW_WIN32)
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"libEGL.dll",
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"EGL.dll",
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#elif defined(_GLFW_COCOA)
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"libEGL.dylib",
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#elif defined(__CYGWIN__)
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"libEGL-1.so",
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#else
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"libEGL.so.1",
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#endif
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NULL
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};
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if (_glfw.egl.handle)
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return true;
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for (i = 0; sonames[i]; i++)
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{
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_glfw.egl.handle = _glfw_dlopen(sonames[i]);
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if (_glfw.egl.handle)
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break;
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}
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if (!_glfw.egl.handle)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Library not found");
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return false;
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}
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_glfw.egl.prefix = (strncmp(sonames[i], "lib", 3) == 0);
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_glfw.egl.GetConfigAttrib = (PFN_eglGetConfigAttrib)
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_glfw_dlsym(_glfw.egl.handle, "eglGetConfigAttrib");
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_glfw.egl.GetConfigs = (PFN_eglGetConfigs)
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_glfw_dlsym(_glfw.egl.handle, "eglGetConfigs");
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_glfw.egl.GetDisplay = (PFN_eglGetDisplay)
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_glfw_dlsym(_glfw.egl.handle, "eglGetDisplay");
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_glfw.egl.GetError = (PFN_eglGetError)
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_glfw_dlsym(_glfw.egl.handle, "eglGetError");
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_glfw.egl.Initialize = (PFN_eglInitialize)
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_glfw_dlsym(_glfw.egl.handle, "eglInitialize");
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_glfw.egl.Terminate = (PFN_eglTerminate)
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_glfw_dlsym(_glfw.egl.handle, "eglTerminate");
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_glfw.egl.BindAPI = (PFN_eglBindAPI)
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_glfw_dlsym(_glfw.egl.handle, "eglBindAPI");
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_glfw.egl.CreateContext = (PFN_eglCreateContext)
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_glfw_dlsym(_glfw.egl.handle, "eglCreateContext");
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_glfw.egl.DestroySurface = (PFN_eglDestroySurface)
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_glfw_dlsym(_glfw.egl.handle, "eglDestroySurface");
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_glfw.egl.DestroyContext = (PFN_eglDestroyContext)
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_glfw_dlsym(_glfw.egl.handle, "eglDestroyContext");
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_glfw.egl.CreateWindowSurface = (PFN_eglCreateWindowSurface)
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_glfw_dlsym(_glfw.egl.handle, "eglCreateWindowSurface");
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_glfw.egl.MakeCurrent = (PFN_eglMakeCurrent)
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_glfw_dlsym(_glfw.egl.handle, "eglMakeCurrent");
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_glfw.egl.SwapBuffers = (PFN_eglSwapBuffers)
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_glfw_dlsym(_glfw.egl.handle, "eglSwapBuffers");
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_glfw.egl.SwapInterval = (PFN_eglSwapInterval)
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_glfw_dlsym(_glfw.egl.handle, "eglSwapInterval");
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_glfw.egl.QueryString = (PFN_eglQueryString)
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_glfw_dlsym(_glfw.egl.handle, "eglQueryString");
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_glfw.egl.GetProcAddress = (PFN_eglGetProcAddress)
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_glfw_dlsym(_glfw.egl.handle, "eglGetProcAddress");
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if (!_glfw.egl.GetConfigAttrib ||
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!_glfw.egl.GetConfigs ||
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!_glfw.egl.GetDisplay ||
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!_glfw.egl.GetError ||
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!_glfw.egl.Initialize ||
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!_glfw.egl.Terminate ||
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!_glfw.egl.BindAPI ||
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!_glfw.egl.CreateContext ||
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!_glfw.egl.DestroySurface ||
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!_glfw.egl.DestroyContext ||
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!_glfw.egl.CreateWindowSurface ||
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!_glfw.egl.MakeCurrent ||
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!_glfw.egl.SwapBuffers ||
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!_glfw.egl.SwapInterval ||
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!_glfw.egl.QueryString ||
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!_glfw.egl.GetProcAddress)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"EGL: Failed to load required entry points");
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_glfwTerminateEGL();
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return false;
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}
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_glfw.egl.display = eglGetDisplay(_GLFW_EGL_NATIVE_DISPLAY);
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if (_glfw.egl.display == EGL_NO_DISPLAY)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"EGL: Failed to get EGL display: %s",
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getEGLErrorString(eglGetError()));
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_glfwTerminateEGL();
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return false;
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}
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if (!eglInitialize(_glfw.egl.display, &_glfw.egl.major, &_glfw.egl.minor))
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"EGL: Failed to initialize EGL: %s",
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getEGLErrorString(eglGetError()));
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_glfwTerminateEGL();
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return false;
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}
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_glfw.egl.KHR_create_context =
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extensionSupportedEGL("EGL_KHR_create_context");
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_glfw.egl.KHR_create_context_no_error =
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extensionSupportedEGL("EGL_KHR_create_context_no_error");
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_glfw.egl.KHR_gl_colorspace =
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extensionSupportedEGL("EGL_KHR_gl_colorspace");
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_glfw.egl.KHR_get_all_proc_addresses =
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extensionSupportedEGL("EGL_KHR_get_all_proc_addresses");
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_glfw.egl.KHR_context_flush_control =
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extensionSupportedEGL("EGL_KHR_context_flush_control");
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return true;
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}
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// Terminate EGL
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//
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void _glfwTerminateEGL(void)
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{
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if (_glfw.egl.display)
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{
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eglTerminate(_glfw.egl.display);
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_glfw.egl.display = EGL_NO_DISPLAY;
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}
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if (_glfw.egl.handle)
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{
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_glfw_dlclose(_glfw.egl.handle);
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_glfw.egl.handle = NULL;
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}
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}
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#define setAttrib(a, v) \
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|
{ \
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assert(((size_t) index + 1) < sizeof(attribs) / sizeof(attribs[0])); \
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attribs[index++] = a; \
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attribs[index++] = v; \
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}
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|
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// Create the OpenGL or OpenGL ES context
|
|
//
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bool _glfwCreateContextEGL(_GLFWwindow* window,
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const _GLFWctxconfig* ctxconfig,
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const _GLFWfbconfig* fbconfig)
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{
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EGLint attribs[40];
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EGLConfig config;
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EGLContext share = NULL;
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int index = 0;
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if (!_glfw.egl.display)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE, "EGL: API not available");
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return false;
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}
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if (ctxconfig->share)
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share = ctxconfig->share->context.egl.handle;
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if (!chooseEGLConfig(ctxconfig, fbconfig, &config))
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{
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_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
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"EGL: Failed to find a suitable EGLConfig");
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return false;
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}
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if (ctxconfig->client == GLFW_OPENGL_ES_API)
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{
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if (!eglBindAPI(EGL_OPENGL_ES_API))
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"EGL: Failed to bind OpenGL ES: %s",
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getEGLErrorString(eglGetError()));
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return false;
|
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}
|
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}
|
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else
|
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{
|
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if (!eglBindAPI(EGL_OPENGL_API))
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{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"EGL: Failed to bind OpenGL: %s",
|
|
getEGLErrorString(eglGetError()));
|
|
return 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, 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 false;
|
|
}
|
|
|
|
// Set up attributes for surface creation
|
|
{
|
|
int index = 0;
|
|
|
|
if (fbconfig->sRGB)
|
|
{
|
|
if (_glfw.egl.KHR_gl_colorspace)
|
|
setAttrib(EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR);
|
|
}
|
|
|
|
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 false;
|
|
}
|
|
|
|
window->context.egl.config = config;
|
|
|
|
EGLint a = EGL_MIN_SWAP_INTERVAL;
|
|
if (!eglGetConfigAttrib(_glfw.egl.display, config, a, &a)) {
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE, "EGL: could not check for non-blocking buffer swap with error: %s", getEGLErrorString(eglGetError()));
|
|
} else {
|
|
if (a > 0) {
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE, "EGL: non-blocking swap buffers not available, minimum swap interval is: %d", a);
|
|
}
|
|
}
|
|
|
|
// 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",
|
|
#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",
|
|
#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)
|
|
#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 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 true;
|
|
}
|
|
|
|
#undef setAttrib
|
|
|
|
// Returns the Visual and depth of the chosen EGLConfig
|
|
//
|
|
#if defined(_GLFW_X11)
|
|
bool _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 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 false;
|
|
}
|
|
|
|
*visual = result->visual;
|
|
*depth = result->depth;
|
|
|
|
XFree(result);
|
|
return 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.client == GLFW_NO_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.client == GLFW_NO_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return EGL_NO_SURFACE;
|
|
}
|
|
|
|
return window->context.egl.surface;
|
|
}
|