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 void makeContextCurrentWGL(_GLFWwindow* window)
{
if (window)
{
if (wglMakeCurrent(window->context.wgl.dc, window->context.wgl.handle))
_glfwPlatformSetTls(&_glfw.contextSlot, window);
else
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to make context current");
_glfwPlatformSetTls(&_glfw.contextSlot, NULL);
}
}
else
{
if (!wglMakeCurrent(NULL, NULL))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to clear current context");
}
_glfwPlatformSetTls(&_glfw.contextSlot, NULL);
}
}
