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Add aspect ratio

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This commit is contained in:
camdenorrb 2024-12-23 00:10:23 -06:00
parent d981cb1aa3
commit b7d3cd532a
1 changed files with 21 additions and 12 deletions
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33
Source/Core/VideoBackends/Vulkan/VKSwapChain.cpp
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@ -47,6 +47,18 @@ bool CompareResolutions(const VkDisplayModePropertiesKHR& a, const VkDisplayMode
return params_a.height < params_b.height; // Then by height
}
// Function to calculate the greatest common divisor (GCD)
int gcd(int a, int b)
{
while (b != 0)
{
int temp = b;
b = a % b;
a = temp;
}
return a;
}
VkSurfaceKHR SwapChain::CreateVulkanSurface(VkInstance instance, VkPhysicalDevice physical_device,
const WindowSystemInfo& wsi)
{
@ -98,21 +110,18 @@ VkSurfaceKHR SwapChain::CreateVulkanSurface(VkInstance instance, VkPhysicalDevic
const VkDisplayModeParametersKHR* params = &all_mode_props_vector[i].parameters;
int width = params->visibleRegion.width;
int height = params->visibleRegion.height;
float aspect_ratio = static_cast<float>(width) / static_cast<float>(height);
printf("Mode %d: %d x %d (%.2f fps, %.2f:1 aspect ratio)\n", i,
width, height,
static_cast<float>(params->refreshRate) / 1000.0f,
aspect_ratio);
// Calculate the GCD of width and height
int divisor = gcd(width, height);
}
// Reduce width and height by their GCD to get the aspect ratio
int aspect_width = width / divisor;
int aspect_height = height / divisor;
for (int i = 0; i < mode_count; ++i)
{
VkDisplayModeParametersKHR *params = &all_mode_props[i].parameters;
printf("Mode %d: %d x %d (%.2f fps)\n", i,
params->visibleRegion.width, params->visibleRegion.height,
static_cast<float>(params->refreshRate) / 1000.0f);
printf("Mode %d: %d x %d (%.2f fps, %d:%d aspect ratio)\n", i,
width, height,
static_cast<float>(params->refreshRate) / 1000.0f,
aspect_width, aspect_height);
}
int selected_mode = -1;