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Only center Vulkan viewport in "keep resolution" mode

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When windowed or in "switch resolution" mode, the viewport must be kept
in the top-left corner or it will appear cut while in fullscreen.

Also, make offset and width calculations safe from the point of view of
the swapchain extent, in case there's a mismatch.
This commit is contained in:
Ricardo Garcia 2021-02-14 23:01:14 +01:00
parent b96b3a8d84
commit 63f6778910
1 changed files with 13 additions and 4 deletions
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17
src/client/refresh/vk/vk_common.c
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@ -1824,12 +1824,21 @@ qboolean QVk_Init(SDL_Window *window)
R_Printf(PRINT_ALL, "...created Vulkan swapchain\n");
// set viewport and scissor
vk_viewport.x = (float)(vk_swapchain.extent.width - (uint32_t)(vid.width)) / 2.0f;
vk_viewport.y = (float)(vk_swapchain.extent.height - (uint32_t)(vid.height)) / 2.0f;
if (vid_fullscreen->value == 1)
{
// Center viewport in "keep resolution mode".
vk_viewport.x = max(0.f, (float)(vk_swapchain.extent.width - (uint32_t)(vid.width)) / 2.0f);
vk_viewport.y = max(0.f, (float)(vk_swapchain.extent.height - (uint32_t)(vid.height)) / 2.0f);
}
else
{
vk_viewport.x = 0.f;
vk_viewport.y = 0.f;
}
vk_viewport.minDepth = 0.f;
vk_viewport.maxDepth = 1.f;
vk_viewport.width = (float)vid.width;
vk_viewport.height = (float)vid.height;
vk_viewport.width = min((float)vid.width, (float)(vk_swapchain.extent.width) - vk_viewport.x);
vk_viewport.height = min((float)vid.height, (float)(vk_swapchain.extent.height) - vk_viewport.y);
vk_scissor.offset.x = 0;
vk_scissor.offset.y = 0;
vk_scissor.extent = vk_swapchain.extent;