mirror of
https://github.com/glfw/glfw.git
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6659a80040
The NetBSD sonames for X11 and related libraries is more stable than on
OpenBSD but the version numbers are still bumped more often than their
Linux counterparts, even excluding the one-time version bump across all
X11 related libraries.
This commit moves to using version-less sonames for X11 and related
libraries on NetBSD, which will hopefully be more forward-compatible
than hard-coding NetBSD-specific sonames.
This may not be the correct long-term solution but it runs now.
Binaries also appear to need an LD_LIBRARY_PATH or rpath entry of
/usr/X11R7/lib in order for the libraries to be found by dlopen.
Tested on NetBSD 9.2.
(cherry picked from commit d78b0a4ead)
387 lines
12 KiB
C
387 lines
12 KiB
C
//========================================================================
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// GLFW 3.3 OSMesa - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2016 Google Inc.
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// Copyright (c) 2016-2017 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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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "internal.h"
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static void makeContextCurrentOSMesa(_GLFWwindow* window)
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{
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if (window)
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{
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int width, height;
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_glfwPlatformGetFramebufferSize(window, &width, &height);
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// Check to see if we need to allocate a new buffer
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if ((window->context.osmesa.buffer == NULL) ||
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(width != window->context.osmesa.width) ||
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(height != window->context.osmesa.height))
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{
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free(window->context.osmesa.buffer);
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// Allocate the new buffer (width * height * 8-bit RGBA)
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window->context.osmesa.buffer = calloc(4, (size_t) width * height);
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window->context.osmesa.width = width;
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window->context.osmesa.height = height;
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}
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if (!OSMesaMakeCurrent(window->context.osmesa.handle,
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window->context.osmesa.buffer,
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GL_UNSIGNED_BYTE,
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width, height))
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"OSMesa: Failed to make context current");
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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 GLFWglproc getProcAddressOSMesa(const char* procname)
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{
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return (GLFWglproc) OSMesaGetProcAddress(procname);
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}
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static void destroyContextOSMesa(_GLFWwindow* window)
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{
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if (window->context.osmesa.handle)
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{
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OSMesaDestroyContext(window->context.osmesa.handle);
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window->context.osmesa.handle = NULL;
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}
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if (window->context.osmesa.buffer)
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{
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free(window->context.osmesa.buffer);
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window->context.osmesa.width = 0;
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window->context.osmesa.height = 0;
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}
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}
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static void swapBuffersOSMesa(_GLFWwindow* window)
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{
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// No double buffering on OSMesa
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}
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static void swapIntervalOSMesa(int interval)
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{
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// No swap interval on OSMesa
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}
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static int extensionSupportedOSMesa(const char* extension)
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{
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// OSMesa does not have extensions
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return GLFW_FALSE;
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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GLFWbool _glfwInitOSMesa(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_OSMESA_LIBRARY)
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_GLFW_OSMESA_LIBRARY,
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#elif defined(_WIN32)
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"libOSMesa.dll",
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"OSMesa.dll",
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#elif defined(__APPLE__)
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"libOSMesa.8.dylib",
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#elif defined(__CYGWIN__)
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"libOSMesa-8.so",
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#elif defined(__OpenBSD__) || defined(__NetBSD__)
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"libOSMesa.so",
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#else
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"libOSMesa.so.8",
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"libOSMesa.so.6",
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#endif
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NULL
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};
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if (_glfw.osmesa.handle)
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return GLFW_TRUE;
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for (i = 0; sonames[i]; i++)
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{
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_glfw.osmesa.handle = _glfw_dlopen(sonames[i]);
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if (_glfw.osmesa.handle)
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break;
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}
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if (!_glfw.osmesa.handle)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE, "OSMesa: Library not found");
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return GLFW_FALSE;
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}
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_glfw.osmesa.CreateContextExt = (PFN_OSMesaCreateContextExt)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaCreateContextExt");
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_glfw.osmesa.CreateContextAttribs = (PFN_OSMesaCreateContextAttribs)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaCreateContextAttribs");
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_glfw.osmesa.DestroyContext = (PFN_OSMesaDestroyContext)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaDestroyContext");
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_glfw.osmesa.MakeCurrent = (PFN_OSMesaMakeCurrent)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaMakeCurrent");
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_glfw.osmesa.GetColorBuffer = (PFN_OSMesaGetColorBuffer)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetColorBuffer");
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_glfw.osmesa.GetDepthBuffer = (PFN_OSMesaGetDepthBuffer)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetDepthBuffer");
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_glfw.osmesa.GetProcAddress = (PFN_OSMesaGetProcAddress)
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_glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetProcAddress");
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if (!_glfw.osmesa.CreateContextExt ||
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!_glfw.osmesa.DestroyContext ||
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!_glfw.osmesa.MakeCurrent ||
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!_glfw.osmesa.GetColorBuffer ||
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!_glfw.osmesa.GetDepthBuffer ||
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!_glfw.osmesa.GetProcAddress)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"OSMesa: Failed to load required entry points");
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_glfwTerminateOSMesa();
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return GLFW_FALSE;
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}
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return GLFW_TRUE;
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}
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void _glfwTerminateOSMesa(void)
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{
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if (_glfw.osmesa.handle)
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{
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_glfw_dlclose(_glfw.osmesa.handle);
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_glfw.osmesa.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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GLFWbool _glfwCreateContextOSMesa(_GLFWwindow* window,
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const _GLFWctxconfig* ctxconfig,
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const _GLFWfbconfig* fbconfig)
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{
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OSMesaContext share = NULL;
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const int accumBits = fbconfig->accumRedBits +
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fbconfig->accumGreenBits +
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fbconfig->accumBlueBits +
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fbconfig->accumAlphaBits;
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if (ctxconfig->client == GLFW_OPENGL_ES_API)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"OSMesa: OpenGL ES is not available on OSMesa");
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return GLFW_FALSE;
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}
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if (ctxconfig->share)
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share = ctxconfig->share->context.osmesa.handle;
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if (OSMesaCreateContextAttribs)
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{
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int index = 0, attribs[40];
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setAttrib(OSMESA_FORMAT, OSMESA_RGBA);
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setAttrib(OSMESA_DEPTH_BITS, fbconfig->depthBits);
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setAttrib(OSMESA_STENCIL_BITS, fbconfig->stencilBits);
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setAttrib(OSMESA_ACCUM_BITS, accumBits);
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if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
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{
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setAttrib(OSMESA_PROFILE, OSMESA_CORE_PROFILE);
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}
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else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
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{
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setAttrib(OSMESA_PROFILE, OSMESA_COMPAT_PROFILE);
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}
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if (ctxconfig->major != 1 || ctxconfig->minor != 0)
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{
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setAttrib(OSMESA_CONTEXT_MAJOR_VERSION, ctxconfig->major);
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setAttrib(OSMESA_CONTEXT_MINOR_VERSION, ctxconfig->minor);
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}
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if (ctxconfig->forward)
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{
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_glfwInputError(GLFW_VERSION_UNAVAILABLE,
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"OSMesa: Forward-compatible contexts not supported");
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return GLFW_FALSE;
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}
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setAttrib(0, 0);
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window->context.osmesa.handle =
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OSMesaCreateContextAttribs(attribs, share);
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}
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else
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{
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if (ctxconfig->profile)
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{
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_glfwInputError(GLFW_VERSION_UNAVAILABLE,
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"OSMesa: OpenGL profiles unavailable");
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return GLFW_FALSE;
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}
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window->context.osmesa.handle =
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OSMesaCreateContextExt(OSMESA_RGBA,
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fbconfig->depthBits,
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fbconfig->stencilBits,
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accumBits,
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share);
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}
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if (window->context.osmesa.handle == NULL)
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{
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_glfwInputError(GLFW_VERSION_UNAVAILABLE,
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"OSMesa: Failed to create context");
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return GLFW_FALSE;
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}
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window->context.makeCurrent = makeContextCurrentOSMesa;
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window->context.swapBuffers = swapBuffersOSMesa;
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window->context.swapInterval = swapIntervalOSMesa;
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window->context.extensionSupported = extensionSupportedOSMesa;
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window->context.getProcAddress = getProcAddressOSMesa;
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window->context.destroy = destroyContextOSMesa;
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return GLFW_TRUE;
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}
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#undef setAttrib
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//////////////////////////////////////////////////////////////////////////
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////// GLFW native API //////
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//////////////////////////////////////////////////////////////////////////
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GLFWAPI int glfwGetOSMesaColorBuffer(GLFWwindow* handle, int* width,
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int* height, int* format, void** buffer)
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{
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void* mesaBuffer;
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GLint mesaWidth, mesaHeight, mesaFormat;
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_GLFWwindow* window = (_GLFWwindow*) handle;
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assert(window != NULL);
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_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
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if (window->context.source != GLFW_OSMESA_CONTEXT_API)
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{
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_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
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return GLFW_FALSE;
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}
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if (!OSMesaGetColorBuffer(window->context.osmesa.handle,
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&mesaWidth, &mesaHeight,
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&mesaFormat, &mesaBuffer))
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"OSMesa: Failed to retrieve color buffer");
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return GLFW_FALSE;
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}
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if (width)
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*width = mesaWidth;
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if (height)
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*height = mesaHeight;
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if (format)
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*format = mesaFormat;
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if (buffer)
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*buffer = mesaBuffer;
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return GLFW_TRUE;
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}
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GLFWAPI int glfwGetOSMesaDepthBuffer(GLFWwindow* handle,
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int* width, int* height,
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int* bytesPerValue,
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void** buffer)
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{
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void* mesaBuffer;
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GLint mesaWidth, mesaHeight, mesaBytes;
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_GLFWwindow* window = (_GLFWwindow*) handle;
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assert(window != NULL);
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_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
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if (window->context.source != GLFW_OSMESA_CONTEXT_API)
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{
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_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
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return GLFW_FALSE;
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}
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if (!OSMesaGetDepthBuffer(window->context.osmesa.handle,
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&mesaWidth, &mesaHeight,
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&mesaBytes, &mesaBuffer))
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"OSMesa: Failed to retrieve depth buffer");
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return GLFW_FALSE;
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}
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if (width)
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*width = mesaWidth;
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if (height)
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*height = mesaHeight;
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if (bytesPerValue)
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*bytesPerValue = mesaBytes;
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if (buffer)
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*buffer = mesaBuffer;
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return GLFW_TRUE;
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}
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GLFWAPI OSMesaContext glfwGetOSMesaContext(GLFWwindow* handle)
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{
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_GLFWwindow* window = (_GLFWwindow*) handle;
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_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
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if (window->context.source != GLFW_OSMESA_CONTEXT_API)
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{
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_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
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return NULL;
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}
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return window->context.osmesa.handle;
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}
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