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Handle window resizing on the render thread in D3D11 and D3D12

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This prevents crashing when a separate thread is being used for rendering

Discussion and sample code in https://github.com/libsdl-org/SDL/issues/8528
This commit is contained in:
Sam Lantinga
2023-11-11 12:49:53 -08:00
parent f66f61de01
commit 843873626c
2 changed files with 18 additions and 2 deletions
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10
src/render/direct3d12/SDL_render_d3d12.c
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@@ -174,6 +174,7 @@ typedef struct
ID3D12GraphicsCommandList2 *commandList;
DXGI_SWAP_EFFECT swapEffect;
UINT swapFlags;
SDL_bool pixelSizeChanged;
/* Descriptor heaps */
ID3D12DescriptorHeap *rtvDescriptorHeap;
@@ -1386,8 +1387,10 @@ static HRESULT D3D12_UpdateForWindowSizeChange(SDL_Renderer *renderer)
static void D3D12_WindowEvent(SDL_Renderer *renderer, const SDL_WindowEvent *event)
{
D3D12_RenderData *data = (D3D12_RenderData *)renderer->driverdata;
if (event->type == SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED) {
D3D12_UpdateForWindowSizeChange(renderer);
data->pixelSizeChanged = SDL_TRUE;
}
}
@@ -2562,6 +2565,11 @@ static int D3D12_RunCommandQueue(SDL_Renderer *renderer, SDL_RenderCommand *cmd,
D3D12_RenderData *rendererData = (D3D12_RenderData *)renderer->driverdata;
const int viewportRotation = D3D12_GetRotationForCurrentRenderTarget(renderer);
if (rendererData->pixelSizeChanged) {
D3D12_UpdateForWindowSizeChange(renderer);
rendererData->pixelSizeChanged = SDL_FALSE;
}
if (rendererData->currentViewportRotation != viewportRotation) {
rendererData->currentViewportRotation = viewportRotation;
rendererData->viewportDirty = SDL_TRUE;