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Fix waitvsync for bgfx vulkan backend. [Couriersud]

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Currently waitvsync is broken in the bgfx vulkan backend.
The option is just ignored and a mode waiting for vsync is selected.
This also breaks throttle. -nothrottle doesn't work.

These changes fix this. If available a non-syncing mode is used if
-nowaitvsync is used.
This commit is contained in:
Couriersud 2019-10-27 14:46:45 +01:00
parent cf93eca24c
commit d88a02f776
1 changed files with 39 additions and 0 deletions
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39
3rdparty/bgfx/src/renderer_vk.cpp vendored
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@ -2761,6 +2761,45 @@ VK_IMPORT_DEVICE
releaseSwapchainFramebuffer();
releaseSwapchain();
#if 1
uint32_t numPresentModes(10);
VkPresentModeKHR presentModes[10];
vkGetPhysicalDeviceSurfacePresentModesKHR(m_physicalDevice, m_surface, &numPresentModes, presentModes);
// find the best match...
uint32_t presentModeIdx = numPresentModes;
VkPresentModeKHR preferredPresentMode[] = {
VK_PRESENT_MODE_FIFO_KHR,
VK_PRESENT_MODE_FIFO_RELAXED_KHR,
VK_PRESENT_MODE_MAILBOX_KHR,
VK_PRESENT_MODE_IMMEDIATE_KHR,
};
bool has_vsync[] = {true, true, true, false};
bool vsync = (flags & BGFX_RESET_VSYNC ? true : false);
for (uint32_t ii = 0; ii < BX_COUNTOF(preferredPresentMode); ++ii)
{
for (uint32_t jj = 0; jj < numPresentModes; ++jj)
{
if ((presentModes[jj] == preferredPresentMode[ii]) && (vsync == has_vsync[ii]))
{
presentModeIdx = jj;
BX_TRACE("present mode: %d", (int)preferredPresentMode[ii]);
break;
}
}
if (presentModeIdx < numPresentModes)
{
break;
}
}
if (presentModeIdx == numPresentModes)
{
presentModeIdx = 0;
}
m_sci.presentMode = presentModes[presentModeIdx];
//bx::printf("%d %d %d %d %d\n", flags, BGFX_RESET_VSYNC, presentModeIdx, presentModes[presentModeIdx], numPresentModes);
#endif
VkSurfaceCapabilitiesKHR surfaceCapabilities;
VK_CHECK(vkGetPhysicalDeviceSurfaceCapabilitiesKHR(m_physicalDevice, m_surface, &surfaceCapabilities) );