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Weird fix for frame rate doubling after second created window. (#2564)

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* Weird fix for frame rate doubling after second created window.

* Don't double buffer with vsync in metal to prevent 2x fps instead.

* Setting number of back buffers in metal if available.

* Better function call syntax.

* Matching maxFrameLatency to maximumDrawableCount in Metal backend.
This commit is contained in:
Matt Tytel
2021-07-30 08:39:11 -07:00
committed by GitHub
parent 2ec34699af
commit 25ef0e5c85
2 changed files with 8 additions and 4 deletions
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2
src/renderer_mtl.h
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@@ -1036,7 +1036,7 @@ namespace bgfx { namespace mtl
~SwapChainMtl();
void init(void* _nwh);
void resize(FrameBufferMtl &_frameBuffer, uint32_t _width, uint32_t _height, uint32_t _flags);
void resize(FrameBufferMtl &_frameBuffer, uint32_t _width, uint32_t _height, uint32_t _flags, uint32_t _maximumDrawableCount);
id <MTLTexture> currentDrawableTexture();

10
src/renderer_mtl.mm
View File

@@ -936,7 +936,7 @@ namespace bgfx { namespace mtl
FrameBufferMtl& fb = m_frameBuffers[_handle.idx];
fb.create(denseIdx, _nwh, _width, _height, _format, _depthFormat);
fb.m_swapChain->resize(m_frameBuffers[_handle.idx], _width, _height, m_resolution.reset);
fb.m_swapChain->resize(m_frameBuffers[_handle.idx], _width, _height, m_resolution.reset, m_resolution.maxFrameLatency);
}
void destroyFrameBuffer(FrameBufferHandle _handle) override
@@ -1262,7 +1262,7 @@ namespace bgfx { namespace mtl
}
m_resolution.reset &= ~BGFX_RESET_INTERNAL_FORCE;
m_mainFrameBuffer.m_swapChain->resize(m_mainFrameBuffer, _resolution.width, _resolution.height, _resolution.reset);
m_mainFrameBuffer.m_swapChain->resize(m_mainFrameBuffer, _resolution.width, _resolution.height, _resolution.reset, m_resolution.maxFrameLatency);
for (uint32_t ii = 0; ii < BX_COUNTOF(m_frameBuffers); ++ii)
{
@@ -3171,7 +3171,7 @@ namespace bgfx { namespace mtl
retain(m_metalLayer);
}
void SwapChainMtl::resize(FrameBufferMtl &_frameBuffer, uint32_t _width, uint32_t _height, uint32_t _flags)
void SwapChainMtl::resize(FrameBufferMtl &_frameBuffer, uint32_t _width, uint32_t _height, uint32_t _flags, uint32_t _maximumDrawableCount)
{
const int32_t sampleCount = s_msaa[(_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
@@ -3181,6 +3181,10 @@ namespace bgfx { namespace mtl
{
m_metalLayer.displaySyncEnabled = 0 != (_flags&BGFX_RESET_VSYNC);
}
if (@available(macOS 10.13.2, *))
{
m_metalLayer.maximumDrawableCount = bx::clamp<uint32_t>(_maximumDrawableCount, 2, 3);
}
#endif // __MAC_OS_X_VERSION_MAX_ALLOWED >= 101300
#endif // BX_PLATFORM_OSX