GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* handle, int* count)
{
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
if (!_glfwInitialized)
{
_glfwInputError(GLFW_NOT_INITIALIZED, NULL);
return NULL;
}
if (monitor == NULL)
{
_glfwInputError(GLFW_INVALID_VALUE,
"glfwGetVideoModes: Invalid monitor handle");
return 0;
}
if (count == NULL)
{
_glfwInputError(GLFW_INVALID_VALUE, NULL);
return NULL;
}
if (!refreshVideoModes(monitor))
return GL_FALSE;
*count = monitor->modeCount;
return monitor->modes;
}
const GLFWvidmode* _glfwChooseVideoMode(_GLFWmonitor* monitor,
const GLFWvidmode* desired)
{
int i;
unsigned int sizeDiff, leastSizeDiff = UINT_MAX;
unsigned int colorDiff, leastColorDiff = UINT_MAX;
const GLFWvidmode* current;
const GLFWvidmode* closest = NULL;
if (!refreshVideoModes(monitor))
return NULL;
for (i = 0; i < monitor->modeCount; i++)
{
current = monitor->modes + i;
colorDiff = abs((current->redBits + current->greenBits + current->blueBits) -
(desired->redBits + desired->greenBits + desired->blueBits));
sizeDiff = abs((current->width - desired->width) *
(current->width - desired->width) +
(current->height - desired->height) *
(current->height - desired->height));
if ((colorDiff < leastColorDiff) ||
(colorDiff == leastColorDiff && sizeDiff < leastSizeDiff))
{
closest = current;
leastSizeDiff = sizeDiff;
leastColorDiff = colorDiff;
}
}
return closest;
}
GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* handle, int* count)
{
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
*count = 0;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
if (!refreshVideoModes(monitor))
return NULL;
*count = monitor->modeCount;
return monitor->modes;
}