diff --git a/src/render/direct3d11/SDL_render_d3d11.c b/src/render/direct3d11/SDL_render_d3d11.c index e9baadc7f..ea2fd3a5e 100644 --- a/src/render/direct3d11/SDL_render_d3d11.c +++ b/src/render/direct3d11/SDL_render_d3d11.c @@ -123,7 +123,8 @@ typedef struct ID3D11RenderTargetView *mainRenderTargetView; ID3D11RenderTargetView *currentOffscreenRenderTargetView; ID3D11InputLayout *inputLayout; - ID3D11Buffer *vertexBuffer; + ID3D11Buffer *vertexBuffers[8]; + size_t vertexBufferSizes[8]; ID3D11VertexShader *vertexShader; ID3D11PixelShader *pixelShaders[NUM_SHADERS]; int blendModesCount; @@ -155,6 +156,7 @@ typedef struct int currentViewportRotation; SDL_bool viewportDirty; Float4X4 identity; + int currentVertexBuffer; } D3D11_RenderData; @@ -242,7 +244,9 @@ D3D11_ReleaseAll(SDL_Renderer * renderer) SAFE_RELEASE(data->mainRenderTargetView); SAFE_RELEASE(data->currentOffscreenRenderTargetView); SAFE_RELEASE(data->inputLayout); - SAFE_RELEASE(data->vertexBuffer); + for (i = 0; i < SDL_arraysize(data->vertexBuffers); ++i) { + SAFE_RELEASE(data->vertexBuffers[i]); + } SAFE_RELEASE(data->vertexShader); for (i = 0; i < SDL_arraysize(data->pixelShaders); ++i) { SAFE_RELEASE(data->pixelShaders[i]); @@ -1798,28 +1802,18 @@ D3D11_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * } -/* !!! FIXME: rotate through a few vertex buffers so the GPU has time to finish using them */ static int D3D11_UpdateVertexBuffer(SDL_Renderer *renderer, const void * vertexData, size_t dataSizeInBytes) { D3D11_RenderData *rendererData = (D3D11_RenderData *) renderer->driverdata; - D3D11_BUFFER_DESC vertexBufferDesc; HRESULT result = S_OK; - D3D11_SUBRESOURCE_DATA vertexBufferData; - const UINT stride = sizeof(VertexPositionColor); - const UINT offset = 0; + const int vbidx = rendererData->currentVertexBuffer; - if (rendererData->vertexBuffer) { - ID3D11Buffer_GetDesc(rendererData->vertexBuffer, &vertexBufferDesc); - } else { - SDL_zero(vertexBufferDesc); - } - - if (rendererData->vertexBuffer && vertexBufferDesc.ByteWidth >= dataSizeInBytes) { + if (rendererData->vertexBuffers[vbidx] && rendererData->vertexBufferSizes[vbidx] >= dataSizeInBytes) { D3D11_MAPPED_SUBRESOURCE mappedResource; result = ID3D11DeviceContext_Map(rendererData->d3dContext, - (ID3D11Resource *)rendererData->vertexBuffer, + (ID3D11Resource *)rendererData->vertexBuffers[vbidx], 0, D3D11_MAP_WRITE_DISCARD, 0, @@ -1830,10 +1824,16 @@ D3D11_UpdateVertexBuffer(SDL_Renderer *renderer, return -1; } SDL_memcpy(mappedResource.pData, vertexData, dataSizeInBytes); - ID3D11DeviceContext_Unmap(rendererData->d3dContext, (ID3D11Resource *)rendererData->vertexBuffer, 0); + ID3D11DeviceContext_Unmap(rendererData->d3dContext, (ID3D11Resource *)rendererData->vertexBuffers[vbidx], 0); } else { - SAFE_RELEASE(rendererData->vertexBuffer); + D3D11_BUFFER_DESC vertexBufferDesc; + D3D11_SUBRESOURCE_DATA vertexBufferData; + const UINT stride = sizeof(VertexPositionColor); + const UINT offset = 0; + SAFE_RELEASE(rendererData->vertexBuffers[vbidx]); + + SDL_zero(vertexBufferDesc); vertexBufferDesc.ByteWidth = (UINT) dataSizeInBytes; vertexBufferDesc.Usage = D3D11_USAGE_DYNAMIC; vertexBufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER; @@ -1847,7 +1847,7 @@ D3D11_UpdateVertexBuffer(SDL_Renderer *renderer, result = ID3D11Device_CreateBuffer(rendererData->d3dDevice, &vertexBufferDesc, &vertexBufferData, - &rendererData->vertexBuffer + &rendererData->vertexBuffers[vbidx] ); if (FAILED(result)) { WIN_SetErrorFromHRESULT(SDL_COMPOSE_ERROR("ID3D11Device1::CreateBuffer [vertex buffer]"), result); @@ -1857,12 +1857,17 @@ D3D11_UpdateVertexBuffer(SDL_Renderer *renderer, ID3D11DeviceContext_IASetVertexBuffers(rendererData->d3dContext, 0, 1, - &rendererData->vertexBuffer, + &rendererData->vertexBuffers[vbidx], &stride, &offset ); } + rendererData->currentVertexBuffer++; + if (rendererData->currentVertexBuffer >= SDL_arraysize(rendererData->vertexBuffers)) { + rendererData->currentVertexBuffer = 0; + } + return 0; }