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Updated swap chain format selection

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This commit is contained in:
Sascha Willems 2023-07-17 21:44:08 +02:00
parent 93fb200fe6
commit 208739f401
1 changed files with 14 additions and 28 deletions
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42
base/VulkanSwapChain.cpp
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@ -163,38 +163,24 @@ void VulkanSwapChain::initSurface(uint32_t width, uint32_t height)
std::vector<VkSurfaceFormatKHR> surfaceFormats(formatCount);
VK_CHECK_RESULT(vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice, surface, &formatCount, surfaceFormats.data()));
// If the surface format list only includes one entry with VK_FORMAT_UNDEFINED,
// there is no preferred format, so we assume VK_FORMAT_B8G8R8A8_UNORM
if ((formatCount == 1) && (surfaceFormats[0].format == VK_FORMAT_UNDEFINED))
{
colorFormat = VK_FORMAT_B8G8R8A8_UNORM;
colorSpace = surfaceFormats[0].colorSpace;
}
else
{
// iterate over the list of available surface format and
// check for the presence of VK_FORMAT_B8G8R8A8_UNORM
bool found_B8G8R8A8_UNORM = false;
for (auto&& surfaceFormat : surfaceFormats)
{
if (surfaceFormat.format == VK_FORMAT_B8G8R8A8_UNORM)
{
colorFormat = surfaceFormat.format;
colorSpace = surfaceFormat.colorSpace;
found_B8G8R8A8_UNORM = true;
break;
}
}
// We want to get a format that best suits our needs, so we try to get one from a set of preferred formats
// Initialize the format to the first one returned by the implementation in case we can't find one of the preffered formats
VkSurfaceFormatKHR selectedFormat = surfaceFormats[0];
std::vector<VkFormat> preferredImageFormats = {
VK_FORMAT_B8G8R8A8_UNORM,
VK_FORMAT_R8G8B8A8_UNORM,
VK_FORMAT_A8B8G8R8_UNORM_PACK32
};
// in case VK_FORMAT_B8G8R8A8_UNORM is not available
// select the first available color format
if (!found_B8G8R8A8_UNORM)
{
colorFormat = surfaceFormats[0].format;
colorSpace = surfaceFormats[0].colorSpace;
for (auto& availableFormat : surfaceFormats) {
if (std::find(preferredImageFormats.begin(), preferredImageFormats.end(), availableFormat.format) != preferredImageFormats.end()) {
selectedFormat = availableFormat;
break;
}
}
colorFormat = selectedFormat.format;
colorSpace = selectedFormat.colorSpace;
}
/**