mirror of
https://github.com/glfw/glfw.git
synced 2024-11-14 14:33:52 +00:00
2d3ce6eaae
The native access functions for context handles did not verify that the
context had been created with the same API the function was for.
This makes these functions emit GLFW_NO_WINDOW_CONTEXT on API mismatch.
(cherry picked from commit cca9008db2)
385 lines
12 KiB
C
385 lines
12 KiB
C
//========================================================================
|
|
// GLFW 3.3 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 (window->context.client != GLFW_OSMESA_CONTEXT_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
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 (window->context.client != GLFW_OSMESA_CONTEXT_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
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_OSMESA_CONTEXT_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return NULL;
|
|
}
|
|
|
|
return window->context.osmesa.handle;
|
|
}
|
|
|