std::pair<VkFormat, VkColorSpaceKHR> SwapChain::ChooseFormat(rhi::GfxSetting & gfxSetting)
{
uint32_t formatCount;
K3D_VK_VERIFY(fpGetPhysicalDeviceSurfaceFormatsKHR(GetPhysicalDevice(), m_Surface, &formatCount, NULL));
std::vector<VkSurfaceFormatKHR> surfFormats(formatCount);
K3D_VK_VERIFY(fpGetPhysicalDeviceSurfaceFormatsKHR(GetPhysicalDevice(), m_Surface, &formatCount, surfFormats.data()));
VkFormat colorFormat;
VkColorSpaceKHR colorSpace;
if (formatCount == 1 && surfFormats[0].format == VK_FORMAT_UNDEFINED)
{
colorFormat = g_FormatTable[gfxSetting.ColorFormat];
}
else
{
K3D_ASSERT(formatCount >= 1);
colorFormat = surfFormats[0].format;
}
colorSpace = surfFormats[0].colorSpace;
return std::make_pair(colorFormat, colorSpace);
}
bool VulkanContext::InitQueue() {
// Iterate over each queue to learn whether it supports presenting:
VkBool32 *supportsPresent = new VkBool32[queue_count];
for (uint32_t i = 0; i < queue_count; i++) {
vkGetPhysicalDeviceSurfaceSupportKHR(physical_devices_[physical_device_], i, surface_, &supportsPresent[i]);
}
// Search for a graphics queue and a present queue in the array of queue
// families, try to find one that supports both
uint32_t graphicsQueueNodeIndex = UINT32_MAX;
uint32_t presentQueueNodeIndex = UINT32_MAX;
for (uint32_t i = 0; i < queue_count; i++) {
if ((queue_props[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) != 0) {
if (graphicsQueueNodeIndex == UINT32_MAX) {
graphicsQueueNodeIndex = i;
}
if (supportsPresent[i] == VK_TRUE) {
graphicsQueueNodeIndex = i;
presentQueueNodeIndex = i;
break;
}
}
}
if (presentQueueNodeIndex == UINT32_MAX) {
// If didn't find a queue that supports both graphics and present, then
// find a separate present queue.
for (uint32_t i = 0; i < queue_count; ++i) {
if (supportsPresent[i] == VK_TRUE) {
presentQueueNodeIndex = i;
break;
}
}
}
delete[] supportsPresent;
// Generate error if could not find both a graphics and a present queue
if (graphicsQueueNodeIndex == UINT32_MAX || presentQueueNodeIndex == UINT32_MAX) {
ELOG("Could not find a graphics and a present queue");
return false;
}
graphics_queue_family_index_ = graphicsQueueNodeIndex;
// Get the list of VkFormats that are supported:
uint32_t formatCount = 0;
VkResult res = vkGetPhysicalDeviceSurfaceFormatsKHR(physical_devices_[physical_device_], surface_, &formatCount, nullptr);
_assert_msg_(G3D, res == VK_SUCCESS, "Failed to get formats for device %p: %d surface: %p", physical_devices_[physical_device_], (int)res, surface_);
if (res != VK_SUCCESS) {
return false;
}
std::vector<VkSurfaceFormatKHR> surfFormats(formatCount);
res = vkGetPhysicalDeviceSurfaceFormatsKHR(physical_devices_[physical_device_], surface_, &formatCount, surfFormats.data());
assert(res == VK_SUCCESS);
if (res != VK_SUCCESS) {
return false;
}
// If the format list includes just one entry of VK_FORMAT_UNDEFINED,
// the surface has no preferred format. Otherwise, at least one
// supported format will be returned.
if (formatCount == 0 || (formatCount == 1 && surfFormats[0].format == VK_FORMAT_UNDEFINED)) {
ILOG("swapchain_format: Falling back to B8G8R8A8_UNORM");
swapchainFormat_ = VK_FORMAT_B8G8R8A8_UNORM;
} else {
swapchainFormat_ = VK_FORMAT_UNDEFINED;
for (uint32_t i = 0; i < formatCount; ++i) {
if (surfFormats[i].colorSpace != VK_COLORSPACE_SRGB_NONLINEAR_KHR) {
continue;
}
if (surfFormats[i].format == VK_FORMAT_B8G8R8A8_UNORM || surfFormats[i].format == VK_FORMAT_R8G8B8A8_UNORM) {
swapchainFormat_ = surfFormats[i].format;
break;
}
}
if (swapchainFormat_ == VK_FORMAT_UNDEFINED) {
// Okay, take the first one then.
swapchainFormat_ = surfFormats[0].format;
}
ILOG("swapchain_format: %d (/%d)", swapchainFormat_, formatCount);
}
vkGetDeviceQueue(device_, graphics_queue_family_index_, 0, &gfx_queue_);
ILOG("gfx_queue_: %p", gfx_queue_);
return true;
}
