+++ /dev/null
-//========================================================================
-// GLFW 3.4 OSMesa - www.glfw.org
-//------------------------------------------------------------------------
-// Copyright (c) 2016 Google Inc.
-// Copyright (c) 2016-2017 Camilla Löwy <elmindreda@glfw.org>
-//
-// This software is provided 'as-is', without any express or implied
-// warranty. In no event will the authors be held liable for any damages
-// arising from the use of this software.
-//
-// Permission is granted to anyone to use this software for any purpose,
-// including commercial applications, and to alter it and redistribute it
-// freely, subject to the following restrictions:
-//
-// 1. The origin of this software must not be misrepresented; you must not
-// claim that you wrote the original software. If you use this software
-// in a product, an acknowledgment in the product documentation would
-// be appreciated but is not required.
-//
-// 2. Altered source versions must be plainly marked as such, and must not
-// be misrepresented as being the original software.
-//
-// 3. This notice may not be removed or altered from any source
-// distribution.
-//
-//========================================================================
-// Please use C89 style variable declarations in this file because VS 2010
-//========================================================================
-
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include "internal.h"
-
-
-static void makeContextCurrentOSMesa(_GLFWwindow* window)
-{
- if (window)
- {
- int width, height;
- _glfwPlatformGetFramebufferSize(window, &width, &height);
-
- // Check to see if we need to allocate a new buffer
- if ((window->context.osmesa.buffer == NULL) ||
- (width != window->context.osmesa.width) ||
- (height != window->context.osmesa.height))
- {
- free(window->context.osmesa.buffer);
-
- // Allocate the new buffer (width * height * 8-bit RGBA)
- window->context.osmesa.buffer = calloc(4, (size_t) width * height);
- window->context.osmesa.width = width;
- window->context.osmesa.height = height;
- }
-
- if (!OSMesaMakeCurrent(window->context.osmesa.handle,
- window->context.osmesa.buffer,
- GL_UNSIGNED_BYTE,
- width, height))
- {
- _glfwInputError(GLFW_PLATFORM_ERROR,
- "OSMesa: Failed to make context current");
- return;
- }
- }
-
- _glfwPlatformSetTls(&_glfw.contextSlot, window);
-}
-
-static GLFWglproc getProcAddressOSMesa(const char* procname)
-{
- return (GLFWglproc) OSMesaGetProcAddress(procname);
-}
-
-static void destroyContextOSMesa(_GLFWwindow* window)
-{
- if (window->context.osmesa.handle)
- {
- OSMesaDestroyContext(window->context.osmesa.handle);
- window->context.osmesa.handle = NULL;
- }
-
- if (window->context.osmesa.buffer)
- {
- free(window->context.osmesa.buffer);
- window->context.osmesa.width = 0;
- window->context.osmesa.height = 0;
- }
-}
-
-static void swapBuffersOSMesa(_GLFWwindow* window)
-{
- // No double buffering on OSMesa
-}
-
-static void swapIntervalOSMesa(int interval)
-{
- // No swap interval on OSMesa
-}
-
-static int extensionSupportedOSMesa(const char* extension)
-{
- // OSMesa does not have extensions
- return GLFW_FALSE;
-}
-
-
-//////////////////////////////////////////////////////////////////////////
-////// GLFW internal API //////
-//////////////////////////////////////////////////////////////////////////
-
-GLFWbool _glfwInitOSMesa(void)
-{
- int i;
- const char* sonames[] =
- {
-#if defined(_GLFW_OSMESA_LIBRARY)
- _GLFW_OSMESA_LIBRARY,
-#elif defined(_WIN32)
- "libOSMesa.dll",
- "OSMesa.dll",
-#elif defined(__APPLE__)
- "libOSMesa.8.dylib",
-#elif defined(__CYGWIN__)
- "libOSMesa-8.so",
-#else
- "libOSMesa.so.8",
- "libOSMesa.so.6",
-#endif
- NULL
- };
-
- if (_glfw.osmesa.handle)
- return GLFW_TRUE;
-
- for (i = 0; sonames[i]; i++)
- {
- _glfw.osmesa.handle = _glfw_dlopen(sonames[i]);
- if (_glfw.osmesa.handle)
- break;
- }
-
- if (!_glfw.osmesa.handle)
- {
- _glfwInputError(GLFW_API_UNAVAILABLE, "OSMesa: Library not found");
- return GLFW_FALSE;
- }
-
- _glfw.osmesa.CreateContextExt = (PFN_OSMesaCreateContextExt)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaCreateContextExt");
- _glfw.osmesa.CreateContextAttribs = (PFN_OSMesaCreateContextAttribs)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaCreateContextAttribs");
- _glfw.osmesa.DestroyContext = (PFN_OSMesaDestroyContext)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaDestroyContext");
- _glfw.osmesa.MakeCurrent = (PFN_OSMesaMakeCurrent)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaMakeCurrent");
- _glfw.osmesa.GetColorBuffer = (PFN_OSMesaGetColorBuffer)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetColorBuffer");
- _glfw.osmesa.GetDepthBuffer = (PFN_OSMesaGetDepthBuffer)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetDepthBuffer");
- _glfw.osmesa.GetProcAddress = (PFN_OSMesaGetProcAddress)
- _glfw_dlsym(_glfw.osmesa.handle, "OSMesaGetProcAddress");
-
- if (!_glfw.osmesa.CreateContextExt ||
- !_glfw.osmesa.DestroyContext ||
- !_glfw.osmesa.MakeCurrent ||
- !_glfw.osmesa.GetColorBuffer ||
- !_glfw.osmesa.GetDepthBuffer ||
- !_glfw.osmesa.GetProcAddress)
- {
- _glfwInputError(GLFW_PLATFORM_ERROR,
- "OSMesa: Failed to load required entry points");
-
- _glfwTerminateOSMesa();
- return GLFW_FALSE;
- }
-
- return GLFW_TRUE;
-}
-
-void _glfwTerminateOSMesa(void)
-{
- if (_glfw.osmesa.handle)
- {
- _glfw_dlclose(_glfw.osmesa.handle);
- _glfw.osmesa.handle = NULL;
- }
-}
-
-#define setAttrib(a, v) \
-{ \
- assert(((size_t) index + 1) < sizeof(attribs) / sizeof(attribs[0])); \
- attribs[index++] = a; \
- attribs[index++] = v; \
-}
-
-GLFWbool _glfwCreateContextOSMesa(_GLFWwindow* window,
- const _GLFWctxconfig* ctxconfig,
- const _GLFWfbconfig* fbconfig)
-{
- OSMesaContext share = NULL;
- const int accumBits = fbconfig->accumRedBits +
- fbconfig->accumGreenBits +
- fbconfig->accumBlueBits +
- fbconfig->accumAlphaBits;
-
- if (ctxconfig->client == GLFW_OPENGL_ES_API)
- {
- _glfwInputError(GLFW_API_UNAVAILABLE,
- "OSMesa: OpenGL ES is not available on OSMesa");
- return GLFW_FALSE;
- }
-
- if (ctxconfig->share)
- share = ctxconfig->share->context.osmesa.handle;
-
- if (OSMesaCreateContextAttribs)
- {
- int index = 0, attribs[40];
-
- setAttrib(OSMESA_FORMAT, OSMESA_RGBA);
- setAttrib(OSMESA_DEPTH_BITS, fbconfig->depthBits);
- setAttrib(OSMESA_STENCIL_BITS, fbconfig->stencilBits);
- setAttrib(OSMESA_ACCUM_BITS, accumBits);
-
- if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
- {
- setAttrib(OSMESA_PROFILE, OSMESA_CORE_PROFILE);
- }
- else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
- {
- setAttrib(OSMESA_PROFILE, OSMESA_COMPAT_PROFILE);
- }
-
- if (ctxconfig->major != 1 || ctxconfig->minor != 0)
- {
- setAttrib(OSMESA_CONTEXT_MAJOR_VERSION, ctxconfig->major);
- setAttrib(OSMESA_CONTEXT_MINOR_VERSION, ctxconfig->minor);
- }
-
- if (ctxconfig->forward)
- {
- _glfwInputError(GLFW_VERSION_UNAVAILABLE,
- "OSMesa: Forward-compatible contexts not supported");
- return GLFW_FALSE;
- }
-
- setAttrib(0, 0);
-
- window->context.osmesa.handle =
- OSMesaCreateContextAttribs(attribs, share);
- }
- else
- {
- if (ctxconfig->profile)
- {
- _glfwInputError(GLFW_VERSION_UNAVAILABLE,
- "OSMesa: OpenGL profiles unavailable");
- return GLFW_FALSE;
- }
-
- window->context.osmesa.handle =
- OSMesaCreateContextExt(OSMESA_RGBA,
- fbconfig->depthBits,
- fbconfig->stencilBits,
- accumBits,
- share);
- }
-
- if (window->context.osmesa.handle == NULL)
- {
- _glfwInputError(GLFW_VERSION_UNAVAILABLE,
- "OSMesa: Failed to create context");
- return GLFW_FALSE;
- }
-
- window->context.makeCurrent = makeContextCurrentOSMesa;
- window->context.swapBuffers = swapBuffersOSMesa;
- window->context.swapInterval = swapIntervalOSMesa;
- window->context.extensionSupported = extensionSupportedOSMesa;
- window->context.getProcAddress = getProcAddressOSMesa;
- window->context.destroy = destroyContextOSMesa;
-
- return GLFW_TRUE;
-}
-
-#undef setAttrib
-
-
-//////////////////////////////////////////////////////////////////////////
-////// GLFW native API //////
-//////////////////////////////////////////////////////////////////////////
-
-GLFWAPI int glfwGetOSMesaColorBuffer(GLFWwindow* handle, int* width,
- int* height, int* format, void** buffer)
-{
- void* mesaBuffer;
- GLint mesaWidth, mesaHeight, mesaFormat;
- _GLFWwindow* window = (_GLFWwindow*) handle;
- assert(window != NULL);
-
- _GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
-
- if (!OSMesaGetColorBuffer(window->context.osmesa.handle,
- &mesaWidth, &mesaHeight,
- &mesaFormat, &mesaBuffer))
- {
- _glfwInputError(GLFW_PLATFORM_ERROR,
- "OSMesa: Failed to retrieve color buffer");
- return GLFW_FALSE;
- }
-
- if (width)
- *width = mesaWidth;
- if (height)
- *height = mesaHeight;
- if (format)
- *format = mesaFormat;
- if (buffer)
- *buffer = mesaBuffer;
-
- return GLFW_TRUE;
-}
-
-GLFWAPI int glfwGetOSMesaDepthBuffer(GLFWwindow* handle,
- int* width, int* height,
- int* bytesPerValue,
- void** buffer)
-{
- void* mesaBuffer;
- GLint mesaWidth, mesaHeight, mesaBytes;
- _GLFWwindow* window = (_GLFWwindow*) handle;
- assert(window != NULL);
-
- _GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
-
- if (!OSMesaGetDepthBuffer(window->context.osmesa.handle,
- &mesaWidth, &mesaHeight,
- &mesaBytes, &mesaBuffer))
- {
- _glfwInputError(GLFW_PLATFORM_ERROR,
- "OSMesa: Failed to retrieve depth buffer");
- return GLFW_FALSE;
- }
-
- if (width)
- *width = mesaWidth;
- if (height)
- *height = mesaHeight;
- if (bytesPerValue)
- *bytesPerValue = mesaBytes;
- if (buffer)
- *buffer = mesaBuffer;
-
- return GLFW_TRUE;
-}
-
-GLFWAPI OSMesaContext glfwGetOSMesaContext(GLFWwindow* handle)
-{
- _GLFWwindow* window = (_GLFWwindow*) handle;
- _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
-
- if (window->context.client == GLFW_NO_API)
- {
- _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
- return NULL;
- }
-
- return window->context.osmesa.handle;
-}
-
projects / pistorm / blobdiff