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789 lines
24 KiB
789 lines
24 KiB
//======================================================================== |
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// GLFW 3.4 EGL - www.glfw.org |
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//------------------------------------------------------------------------ |
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// Copyright (c) 2002-2006 Marcus Geelnard |
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// Copyright (c) 2006-2019 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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// Please use C89 style variable declarations in this file because VS 2010 |
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//======================================================================== |
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|
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#include "internal.h" |
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|
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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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|
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|
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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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|
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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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|
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// Return the EGLConfig most closely matching the specified hints |
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// |
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static GLFWbool 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 GLFW_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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|
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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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|
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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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{ |
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XVisualInfo vi = {0}; |
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|
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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 = |
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XGetVisualInfo(_glfw.x11.display, VisualIDMask, &vi, &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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} |
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#endif // _GLFW_X11 |
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|
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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 = GLFW_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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|
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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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|
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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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|
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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 GLFW_TRUE; |
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} |
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|
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return GLFW_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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|
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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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|
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return eglGetProcAddress(procname); |
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} |
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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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|
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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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|
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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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|
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// Initialize EGL |
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// |
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GLFWbool _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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|
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if (_glfw.egl.handle) |
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return GLFW_TRUE; |
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|
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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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|
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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 GLFW_FALSE; |
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} |
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_glfw.egl.prefix = (strncmp(sonames[i], "lib", 3) == 0); |
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|
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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"); |
|
|
|
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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{ |
|
_glfwInputError(GLFW_PLATFORM_ERROR, |
|
"EGL: Failed to load required entry points"); |
|
|
|
_glfwTerminateEGL(); |
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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"); |
|
|
|
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 |
|
{ |
|
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 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", |
|
#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 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.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; |
|
} |
|
|
|
|