diff options
Diffstat (limited to 'gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp')
| -rwxr-xr-x | gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp | 867 |
1 files changed, 867 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp new file mode 100755 index 000000000..a410c425d --- /dev/null +++ b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp @@ -0,0 +1,867 @@ +// +// Copyright (c) 2012-2014 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// SwapChain11.cpp: Implements a back-end specific class for the D3D11 swap chain. + +#include "libANGLE/renderer/d3d/d3d11/SwapChain11.h" + +#include <EGL/eglext.h> + +#include "libANGLE/features.h" +#include "libANGLE/renderer/d3d/d3d11/formatutils11.h" +#include "libANGLE/renderer/d3d/d3d11/NativeWindow11.h" +#include "libANGLE/renderer/d3d/d3d11/Renderer11.h" +#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h" +#include "libANGLE/renderer/d3d/d3d11/texture_format_table.h" +#include "third_party/trace_event/trace_event.h" + +// Precompiled shaders +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/passthrough2d11vs.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/passthroughrgba2d11ps.h" + +#ifdef ANGLE_ENABLE_KEYEDMUTEX +#define ANGLE_RESOURCE_SHARE_TYPE D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX +#else +#define ANGLE_RESOURCE_SHARE_TYPE D3D11_RESOURCE_MISC_SHARED +#endif + +namespace rx +{ + +namespace +{ +bool NeedsOffscreenTexture(Renderer11 *renderer, NativeWindow11 *nativeWindow, EGLint orientation) +{ + // We don't need an offscreen texture if either orientation = INVERT_Y, + // or present path fast is enabled and we're not rendering onto an offscreen surface. + return orientation != EGL_SURFACE_ORIENTATION_INVERT_Y_ANGLE && + !(renderer->presentPathFastEnabled() && nativeWindow->getNativeWindow()); +} +} // anonymous namespace + +SwapChain11::SwapChain11(Renderer11 *renderer, + NativeWindow11 *nativeWindow, + HANDLE shareHandle, + IUnknown *d3dTexture, + GLenum backBufferFormat, + GLenum depthBufferFormat, + EGLint orientation) + : SwapChainD3D(shareHandle, d3dTexture, backBufferFormat, depthBufferFormat), + mRenderer(renderer), + mWidth(-1), + mHeight(-1), + mOrientation(orientation), + mAppCreatedShareHandle(mShareHandle != nullptr), + mSwapInterval(0), + mPassThroughResourcesInit(false), + mNativeWindow(nativeWindow), + mFirstSwap(true), + mSwapChain(nullptr), + mSwapChain1(nullptr), + mKeyedMutex(nullptr), + mBackBufferTexture(nullptr), + mBackBufferRTView(nullptr), + mBackBufferSRView(nullptr), + mNeedsOffscreenTexture(NeedsOffscreenTexture(renderer, nativeWindow, orientation)), + mOffscreenTexture(nullptr), + mOffscreenRTView(nullptr), + mOffscreenSRView(nullptr), + mDepthStencilTexture(nullptr), + mDepthStencilDSView(nullptr), + mDepthStencilSRView(nullptr), + mQuadVB(nullptr), + mPassThroughSampler(nullptr), + mPassThroughIL(nullptr), + mPassThroughVS(nullptr), + mPassThroughPS(nullptr), + mPassThroughRS(nullptr), + mColorRenderTarget(this, renderer, false), + mDepthStencilRenderTarget(this, renderer, true) +{ + // Sanity check that if present path fast is active then we're using the default orientation + ASSERT(!mRenderer->presentPathFastEnabled() || orientation == 0); +} + +SwapChain11::~SwapChain11() +{ + release(); +} + +void SwapChain11::release() +{ + SafeRelease(mSwapChain1); + SafeRelease(mSwapChain); + SafeRelease(mKeyedMutex); + SafeRelease(mBackBufferTexture); + SafeRelease(mBackBufferRTView); + SafeRelease(mBackBufferSRView); + SafeRelease(mOffscreenTexture); + SafeRelease(mOffscreenRTView); + SafeRelease(mOffscreenSRView); + SafeRelease(mDepthStencilTexture); + SafeRelease(mDepthStencilDSView); + SafeRelease(mDepthStencilSRView); + SafeRelease(mQuadVB); + SafeRelease(mPassThroughSampler); + SafeRelease(mPassThroughIL); + SafeRelease(mPassThroughVS); + SafeRelease(mPassThroughPS); + SafeRelease(mPassThroughRS); + + if (!mAppCreatedShareHandle) + { + mShareHandle = NULL; + } +} + +void SwapChain11::releaseOffscreenColorBuffer() +{ + SafeRelease(mOffscreenTexture); + SafeRelease(mOffscreenRTView); + SafeRelease(mOffscreenSRView); +} + +void SwapChain11::releaseOffscreenDepthBuffer() +{ + SafeRelease(mDepthStencilTexture); + SafeRelease(mDepthStencilDSView); + SafeRelease(mDepthStencilSRView); +} + +EGLint SwapChain11::resetOffscreenBuffers(int backbufferWidth, int backbufferHeight) +{ + if (mNeedsOffscreenTexture) + { + EGLint result = resetOffscreenColorBuffer(backbufferWidth, backbufferHeight); + if (result != EGL_SUCCESS) + { + return result; + } + } + + EGLint result = resetOffscreenDepthBuffer(backbufferWidth, backbufferHeight); + if (result != EGL_SUCCESS) + { + return result; + } + + mWidth = backbufferWidth; + mHeight = backbufferHeight; + + return EGL_SUCCESS; +} + +EGLint SwapChain11::resetOffscreenColorBuffer(int backbufferWidth, int backbufferHeight) +{ + ASSERT(mNeedsOffscreenTexture); + + TRACE_EVENT0("gpu.angle", "SwapChain11::resetOffscreenTexture"); + ID3D11Device *device = mRenderer->getDevice(); + + ASSERT(device != NULL); + + // D3D11 does not allow zero size textures + ASSERT(backbufferWidth >= 1); + ASSERT(backbufferHeight >= 1); + + // Preserve the render target content + ID3D11Texture2D *previousOffscreenTexture = mOffscreenTexture; + if (previousOffscreenTexture) + { + previousOffscreenTexture->AddRef(); + } + const int previousWidth = mWidth; + const int previousHeight = mHeight; + + releaseOffscreenColorBuffer(); + + const d3d11::Format &backbufferFormatInfo = + d3d11::Format::Get(mOffscreenRenderTargetFormat, mRenderer->getRenderer11DeviceCaps()); + + // If the app passed in a share handle or D3D texture, open the resource + // See EGL_ANGLE_d3d_share_handle_client_buffer and EGL_ANGLE_d3d_texture_client_buffer + if (mAppCreatedShareHandle || mD3DTexture != nullptr) + { + if (mAppCreatedShareHandle) + { + ID3D11Resource *tempResource11; + HRESULT result = device->OpenSharedResource(mShareHandle, __uuidof(ID3D11Resource), + (void **)&tempResource11); + ASSERT(SUCCEEDED(result)); + + mOffscreenTexture = d3d11::DynamicCastComObject<ID3D11Texture2D>(tempResource11); + SafeRelease(tempResource11); + } + else if (mD3DTexture != nullptr) + { + mOffscreenTexture = d3d11::DynamicCastComObject<ID3D11Texture2D>(mD3DTexture); + } + else + { + UNREACHABLE(); + } + ASSERT(mOffscreenTexture != nullptr); + } + else + { + const bool useSharedResource = + !mNativeWindow->getNativeWindow() && mRenderer->getShareHandleSupport(); + + D3D11_TEXTURE2D_DESC offscreenTextureDesc = {0}; + offscreenTextureDesc.Width = backbufferWidth; + offscreenTextureDesc.Height = backbufferHeight; + offscreenTextureDesc.Format = backbufferFormatInfo.texFormat; + offscreenTextureDesc.MipLevels = 1; + offscreenTextureDesc.ArraySize = 1; + offscreenTextureDesc.SampleDesc.Count = 1; + offscreenTextureDesc.SampleDesc.Quality = 0; + offscreenTextureDesc.Usage = D3D11_USAGE_DEFAULT; + offscreenTextureDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE; + offscreenTextureDesc.CPUAccessFlags = 0; + offscreenTextureDesc.MiscFlags = useSharedResource ? ANGLE_RESOURCE_SHARE_TYPE : 0; + + HRESULT result = device->CreateTexture2D(&offscreenTextureDesc, NULL, &mOffscreenTexture); + + if (FAILED(result)) + { + ERR("Could not create offscreen texture: %08lX", result); + release(); + + if (d3d11::isDeviceLostError(result)) + { + return EGL_CONTEXT_LOST; + } + else + { + return EGL_BAD_ALLOC; + } + } + + d3d11::SetDebugName(mOffscreenTexture, "Offscreen back buffer texture"); + + // EGL_ANGLE_surface_d3d_texture_2d_share_handle requires that we store a share handle for the client + if (useSharedResource) + { + IDXGIResource *offscreenTextureResource = NULL; + result = mOffscreenTexture->QueryInterface(__uuidof(IDXGIResource), (void**)&offscreenTextureResource); + + // Fall back to no share handle on failure + if (FAILED(result)) + { + ERR("Could not query offscreen texture resource: %08lX", result); + } + else + { + result = offscreenTextureResource->GetSharedHandle(&mShareHandle); + SafeRelease(offscreenTextureResource); + + if (FAILED(result)) + { + mShareHandle = NULL; + ERR("Could not get offscreen texture shared handle: %08lX", result); + } + } + } + } + + // This may return null if the original texture was created without a keyed mutex. + mKeyedMutex = d3d11::DynamicCastComObject<IDXGIKeyedMutex>(mOffscreenTexture); + + D3D11_RENDER_TARGET_VIEW_DESC offscreenRTVDesc; + offscreenRTVDesc.Format = backbufferFormatInfo.rtvFormat; + offscreenRTVDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D; + offscreenRTVDesc.Texture2D.MipSlice = 0; + + HRESULT result = device->CreateRenderTargetView(mOffscreenTexture, &offscreenRTVDesc, &mOffscreenRTView); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mOffscreenRTView, "Offscreen back buffer render target"); + + D3D11_SHADER_RESOURCE_VIEW_DESC offscreenSRVDesc; + offscreenSRVDesc.Format = backbufferFormatInfo.srvFormat; + offscreenSRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D; + offscreenSRVDesc.Texture2D.MostDetailedMip = 0; + offscreenSRVDesc.Texture2D.MipLevels = static_cast<UINT>(-1); + + result = device->CreateShaderResourceView(mOffscreenTexture, &offscreenSRVDesc, &mOffscreenSRView); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mOffscreenSRView, "Offscreen back buffer shader resource"); + + if (previousOffscreenTexture != nullptr) + { + D3D11_BOX sourceBox = {0}; + sourceBox.left = 0; + sourceBox.right = std::min(previousWidth, backbufferWidth); + sourceBox.top = std::max(previousHeight - backbufferHeight, 0); + sourceBox.bottom = previousHeight; + sourceBox.front = 0; + sourceBox.back = 1; + + ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext(); + const int yoffset = std::max(backbufferHeight - previousHeight, 0); + deviceContext->CopySubresourceRegion(mOffscreenTexture, 0, 0, yoffset, 0, + previousOffscreenTexture, 0, &sourceBox); + + SafeRelease(previousOffscreenTexture); + + if (mSwapChain) + { + swapRect(0, 0, backbufferWidth, backbufferHeight); + } + } + + return EGL_SUCCESS; +} + +EGLint SwapChain11::resetOffscreenDepthBuffer(int backbufferWidth, int backbufferHeight) +{ + releaseOffscreenDepthBuffer(); + + if (mDepthBufferFormat != GL_NONE) + { + const d3d11::Format &depthBufferFormatInfo = + d3d11::Format::Get(mDepthBufferFormat, mRenderer->getRenderer11DeviceCaps()); + + D3D11_TEXTURE2D_DESC depthStencilTextureDesc; + depthStencilTextureDesc.Width = backbufferWidth; + depthStencilTextureDesc.Height = backbufferHeight; + depthStencilTextureDesc.Format = depthBufferFormatInfo.texFormat; + depthStencilTextureDesc.MipLevels = 1; + depthStencilTextureDesc.ArraySize = 1; + depthStencilTextureDesc.SampleDesc.Count = 1; + depthStencilTextureDesc.SampleDesc.Quality = 0; + depthStencilTextureDesc.Usage = D3D11_USAGE_DEFAULT; + depthStencilTextureDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL; + + if (depthBufferFormatInfo.srvFormat != DXGI_FORMAT_UNKNOWN) + { + depthStencilTextureDesc.BindFlags |= D3D11_BIND_SHADER_RESOURCE; + } + + depthStencilTextureDesc.CPUAccessFlags = 0; + depthStencilTextureDesc.MiscFlags = 0; + + ID3D11Device *device = mRenderer->getDevice(); + HRESULT result = + device->CreateTexture2D(&depthStencilTextureDesc, NULL, &mDepthStencilTexture); + if (FAILED(result)) + { + ERR("Could not create depthstencil surface for new swap chain: 0x%08X", result); + release(); + + if (d3d11::isDeviceLostError(result)) + { + return EGL_CONTEXT_LOST; + } + else + { + return EGL_BAD_ALLOC; + } + } + d3d11::SetDebugName(mDepthStencilTexture, "Offscreen depth stencil texture"); + + D3D11_DEPTH_STENCIL_VIEW_DESC depthStencilDesc; + depthStencilDesc.Format = depthBufferFormatInfo.dsvFormat; + depthStencilDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D; + depthStencilDesc.Flags = 0; + depthStencilDesc.Texture2D.MipSlice = 0; + + result = device->CreateDepthStencilView(mDepthStencilTexture, &depthStencilDesc, &mDepthStencilDSView); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mDepthStencilDSView, "Offscreen depth stencil view"); + + if (depthBufferFormatInfo.srvFormat != DXGI_FORMAT_UNKNOWN) + { + D3D11_SHADER_RESOURCE_VIEW_DESC depthStencilSRVDesc; + depthStencilSRVDesc.Format = depthBufferFormatInfo.srvFormat; + depthStencilSRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D; + depthStencilSRVDesc.Texture2D.MostDetailedMip = 0; + depthStencilSRVDesc.Texture2D.MipLevels = static_cast<UINT>(-1); + + result = device->CreateShaderResourceView(mDepthStencilTexture, &depthStencilSRVDesc, &mDepthStencilSRView); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mDepthStencilSRView, "Offscreen depth stencil shader resource"); + } + } + + return EGL_SUCCESS; +} + +EGLint SwapChain11::resize(EGLint backbufferWidth, EGLint backbufferHeight) +{ + TRACE_EVENT0("gpu.angle", "SwapChain11::resize"); + ID3D11Device *device = mRenderer->getDevice(); + + if (device == NULL) + { + return EGL_BAD_ACCESS; + } + + // EGL allows creating a surface with 0x0 dimension, however, DXGI does not like 0x0 swapchains + if (backbufferWidth < 1 || backbufferHeight < 1) + { + return EGL_SUCCESS; + } + + // Don't resize unnecessarily + if (mWidth == backbufferWidth && mHeight == backbufferHeight) + { + return EGL_SUCCESS; + } + + // Can only call resize if we have already created our swap buffer and resources + ASSERT(mSwapChain && mBackBufferTexture && mBackBufferRTView && mBackBufferSRView); + + SafeRelease(mBackBufferTexture); + SafeRelease(mBackBufferRTView); + SafeRelease(mBackBufferSRView); + + // Resize swap chain + DXGI_SWAP_CHAIN_DESC desc; + HRESULT result = mSwapChain->GetDesc(&desc); + if (FAILED(result)) + { + ERR("Error reading swap chain description: 0x%08X", result); + release(); + return EGL_BAD_ALLOC; + } + + result = mSwapChain->ResizeBuffers(desc.BufferCount, backbufferWidth, backbufferHeight, getSwapChainNativeFormat(), 0); + + if (FAILED(result)) + { + ERR("Error resizing swap chain buffers: 0x%08X", result); + release(); + + if (d3d11::isDeviceLostError(result)) + { + return EGL_CONTEXT_LOST; + } + else + { + return EGL_BAD_ALLOC; + } + } + + result = mSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&mBackBufferTexture); + ASSERT(SUCCEEDED(result)); + if (SUCCEEDED(result)) + { + d3d11::SetDebugName(mBackBufferTexture, "Back buffer texture"); + result = device->CreateRenderTargetView(mBackBufferTexture, NULL, &mBackBufferRTView); + ASSERT(SUCCEEDED(result)); + if (SUCCEEDED(result)) + { + d3d11::SetDebugName(mBackBufferRTView, "Back buffer render target"); + } + + result = device->CreateShaderResourceView(mBackBufferTexture, nullptr, &mBackBufferSRView); + ASSERT(SUCCEEDED(result)); + if (SUCCEEDED(result)) + { + d3d11::SetDebugName(mBackBufferSRView, "Back buffer shader resource"); + } + } + + mFirstSwap = true; + + return resetOffscreenBuffers(backbufferWidth, backbufferHeight); +} + +DXGI_FORMAT SwapChain11::getSwapChainNativeFormat() const +{ + // Return a render target format for offscreen rendering is supported by IDXGISwapChain. + // MSDN https://msdn.microsoft.com/en-us/library/windows/desktop/bb173064(v=vs.85).aspx + return (mOffscreenRenderTargetFormat == GL_BGRA8_EXT) ? DXGI_FORMAT_B8G8R8A8_UNORM : DXGI_FORMAT_R8G8B8A8_UNORM; +} + +EGLint SwapChain11::reset(EGLint backbufferWidth, EGLint backbufferHeight, EGLint swapInterval) +{ + mSwapInterval = static_cast<unsigned int>(swapInterval); + if (mSwapInterval > 4) + { + // IDXGISwapChain::Present documentation states that valid sync intervals are in the [0,4] + // range + return EGL_BAD_PARAMETER; + } + + // If the swap chain already exists, just resize + if (mSwapChain != nullptr) + { + return resize(backbufferWidth, backbufferHeight); + } + + TRACE_EVENT0("gpu.angle", "SwapChain11::reset"); + ID3D11Device *device = mRenderer->getDevice(); + + if (device == NULL) + { + return EGL_BAD_ACCESS; + } + + // Release specific resources to free up memory for the new render target, while the + // old render target still exists for the purpose of preserving its contents. + SafeRelease(mSwapChain1); + SafeRelease(mSwapChain); + SafeRelease(mBackBufferTexture); + SafeRelease(mBackBufferRTView); + + // EGL allows creating a surface with 0x0 dimension, however, DXGI does not like 0x0 swapchains + if (backbufferWidth < 1 || backbufferHeight < 1) + { + releaseOffscreenColorBuffer(); + return EGL_SUCCESS; + } + + if (mNativeWindow->getNativeWindow()) + { + HRESULT result = mNativeWindow->createSwapChain(device, mRenderer->getDxgiFactory(), + getSwapChainNativeFormat(), backbufferWidth, + backbufferHeight, &mSwapChain); + + if (FAILED(result)) + { + ERR("Could not create additional swap chains or offscreen surfaces: %08lX", result); + release(); + + if (d3d11::isDeviceLostError(result)) + { + return EGL_CONTEXT_LOST; + } + else + { + return EGL_BAD_ALLOC; + } + } + + if (mRenderer->getRenderer11DeviceCaps().supportsDXGI1_2) + { + mSwapChain1 = d3d11::DynamicCastComObject<IDXGISwapChain1>(mSwapChain); + } + + result = mSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&mBackBufferTexture); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mBackBufferTexture, "Back buffer texture"); + + result = device->CreateRenderTargetView(mBackBufferTexture, NULL, &mBackBufferRTView); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mBackBufferRTView, "Back buffer render target"); + + result = device->CreateShaderResourceView(mBackBufferTexture, nullptr, &mBackBufferSRView); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mBackBufferSRView, "Back buffer shader resource view"); + } + + mFirstSwap = true; + + return resetOffscreenBuffers(backbufferWidth, backbufferHeight); +} + +void SwapChain11::initPassThroughResources() +{ + if (mPassThroughResourcesInit) + { + return; + } + + TRACE_EVENT0("gpu.angle", "SwapChain11::initPassThroughResources"); + ID3D11Device *device = mRenderer->getDevice(); + + ASSERT(device != NULL); + + // Make sure our resources are all not allocated, when we create + ASSERT(mQuadVB == NULL && mPassThroughSampler == NULL); + ASSERT(mPassThroughIL == NULL && mPassThroughVS == NULL && mPassThroughPS == NULL); + + D3D11_BUFFER_DESC vbDesc; + vbDesc.ByteWidth = sizeof(d3d11::PositionTexCoordVertex) * 4; + vbDesc.Usage = D3D11_USAGE_DYNAMIC; + vbDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER; + vbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; + vbDesc.MiscFlags = 0; + vbDesc.StructureByteStride = 0; + + HRESULT result = device->CreateBuffer(&vbDesc, NULL, &mQuadVB); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mQuadVB, "Swap chain quad vertex buffer"); + + D3D11_SAMPLER_DESC samplerDesc; + samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT; + samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP; + samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP; + samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP; + samplerDesc.MipLODBias = 0.0f; + samplerDesc.MaxAnisotropy = 0; + samplerDesc.ComparisonFunc = D3D11_COMPARISON_NEVER; + samplerDesc.BorderColor[0] = 0.0f; + samplerDesc.BorderColor[1] = 0.0f; + samplerDesc.BorderColor[2] = 0.0f; + samplerDesc.BorderColor[3] = 0.0f; + samplerDesc.MinLOD = 0; + samplerDesc.MaxLOD = D3D11_FLOAT32_MAX; + + result = device->CreateSamplerState(&samplerDesc, &mPassThroughSampler); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mPassThroughSampler, "Swap chain pass through sampler"); + + D3D11_INPUT_ELEMENT_DESC quadLayout[] = + { + { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 }, + { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 8, D3D11_INPUT_PER_VERTEX_DATA, 0 }, + }; + + result = device->CreateInputLayout(quadLayout, 2, g_VS_Passthrough2D, sizeof(g_VS_Passthrough2D), &mPassThroughIL); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mPassThroughIL, "Swap chain pass through layout"); + + result = device->CreateVertexShader(g_VS_Passthrough2D, sizeof(g_VS_Passthrough2D), NULL, &mPassThroughVS); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mPassThroughVS, "Swap chain pass through vertex shader"); + + result = device->CreatePixelShader(g_PS_PassthroughRGBA2D, sizeof(g_PS_PassthroughRGBA2D), NULL, &mPassThroughPS); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mPassThroughPS, "Swap chain pass through pixel shader"); + + // Use the default rasterizer state but without culling + D3D11_RASTERIZER_DESC rasterizerDesc; + rasterizerDesc.FillMode = D3D11_FILL_SOLID; + rasterizerDesc.CullMode = D3D11_CULL_NONE; + rasterizerDesc.FrontCounterClockwise = FALSE; + rasterizerDesc.DepthBias = 0; + rasterizerDesc.SlopeScaledDepthBias = 0.0f; + rasterizerDesc.DepthBiasClamp = 0.0f; + rasterizerDesc.DepthClipEnable = TRUE; + rasterizerDesc.ScissorEnable = FALSE; + rasterizerDesc.MultisampleEnable = FALSE; + rasterizerDesc.AntialiasedLineEnable = FALSE; + result = device->CreateRasterizerState(&rasterizerDesc, &mPassThroughRS); + ASSERT(SUCCEEDED(result)); + d3d11::SetDebugName(mPassThroughRS, "Swap chain pass through rasterizer state"); + + mPassThroughResourcesInit = true; +} + +// parameters should be validated/clamped by caller +EGLint SwapChain11::swapRect(EGLint x, EGLint y, EGLint width, EGLint height) +{ + if (mNeedsOffscreenTexture) + { + EGLint result = copyOffscreenToBackbuffer(x, y, width, height); + if (result != EGL_SUCCESS) + { + return result; + } + } + + EGLint result = present(x, y, width, height); + if (result != EGL_SUCCESS) + { + return result; + } + + mRenderer->onSwap(); + + return EGL_SUCCESS; +} + +EGLint SwapChain11::copyOffscreenToBackbuffer(EGLint x, EGLint y, EGLint width, EGLint height) +{ + if (!mSwapChain) + { + return EGL_SUCCESS; + } + + initPassThroughResources(); + + ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext(); + + // Set vertices + D3D11_MAPPED_SUBRESOURCE mappedResource; + HRESULT result = deviceContext->Map(mQuadVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource); + if (FAILED(result)) + { + return EGL_BAD_ACCESS; + } + + d3d11::PositionTexCoordVertex *vertices = static_cast<d3d11::PositionTexCoordVertex*>(mappedResource.pData); + + // Create a quad in homogeneous coordinates + float x1 = (x / float(mWidth)) * 2.0f - 1.0f; + float y1 = (y / float(mHeight)) * 2.0f - 1.0f; + float x2 = ((x + width) / float(mWidth)) * 2.0f - 1.0f; + float y2 = ((y + height) / float(mHeight)) * 2.0f - 1.0f; + + float u1 = x / float(mWidth); + float v1 = y / float(mHeight); + float u2 = (x + width) / float(mWidth); + float v2 = (y + height) / float(mHeight); + + // Invert the quad vertices depending on the surface orientation. + if ((mOrientation & EGL_SURFACE_ORIENTATION_INVERT_X_ANGLE) != 0) + { + std::swap(x1, x2); + } + if ((mOrientation & EGL_SURFACE_ORIENTATION_INVERT_Y_ANGLE) != 0) + { + std::swap(y1, y2); + } + + d3d11::SetPositionTexCoordVertex(&vertices[0], x1, y1, u1, v1); + d3d11::SetPositionTexCoordVertex(&vertices[1], x1, y2, u1, v2); + d3d11::SetPositionTexCoordVertex(&vertices[2], x2, y1, u2, v1); + d3d11::SetPositionTexCoordVertex(&vertices[3], x2, y2, u2, v2); + + deviceContext->Unmap(mQuadVB, 0); + + static UINT stride = sizeof(d3d11::PositionTexCoordVertex); + static UINT startIdx = 0; + deviceContext->IASetVertexBuffers(0, 1, &mQuadVB, &stride, &startIdx); + + // Apply state + deviceContext->OMSetDepthStencilState(NULL, 0xFFFFFFFF); + + static const float blendFactor[4] = { 1.0f, 1.0f, 1.0f, 1.0f }; + deviceContext->OMSetBlendState(NULL, blendFactor, 0xFFFFFFF); + + deviceContext->RSSetState(mPassThroughRS); + + // Apply shaders + deviceContext->IASetInputLayout(mPassThroughIL); + deviceContext->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP); + deviceContext->VSSetShader(mPassThroughVS, NULL, 0); + deviceContext->PSSetShader(mPassThroughPS, NULL, 0); + deviceContext->GSSetShader(NULL, NULL, 0); + + auto stateManager = mRenderer->getStateManager(); + + // Apply render targets + stateManager->setOneTimeRenderTarget(mBackBufferRTView, nullptr); + + // Set the viewport + D3D11_VIEWPORT viewport; + viewport.TopLeftX = 0; + viewport.TopLeftY = 0; + viewport.Width = static_cast<FLOAT>(mWidth); + viewport.Height = static_cast<FLOAT>(mHeight); + viewport.MinDepth = 0.0f; + viewport.MaxDepth = 1.0f; + deviceContext->RSSetViewports(1, &viewport); + + // Apply textures + stateManager->setShaderResource(gl::SAMPLER_PIXEL, 0, mOffscreenSRView); + deviceContext->PSSetSamplers(0, 1, &mPassThroughSampler); + + // Draw + deviceContext->Draw(4, 0); + + // Rendering to the swapchain is now complete. Now we can call Present(). + // Before that, we perform any cleanup on the D3D device. We do this before Present() to make sure the + // cleanup is caught under the current eglSwapBuffers() PIX/Graphics Diagnostics call rather than the next one. + stateManager->setShaderResource(gl::SAMPLER_PIXEL, 0, NULL); + + mRenderer->markAllStateDirty(); + + return EGL_SUCCESS; +} + +EGLint SwapChain11::present(EGLint x, EGLint y, EGLint width, EGLint height) +{ + if (!mSwapChain) + { + return EGL_SUCCESS; + } + + UINT swapInterval = mSwapInterval; +#if ANGLE_VSYNC == ANGLE_DISABLED + swapInterval = 0; +#endif + + HRESULT result = S_OK; + + // Use IDXGISwapChain1::Present1 with a dirty rect if DXGI 1.2 is available. + if (mSwapChain1 != nullptr) + { + if (mFirstSwap) + { + // Can't swap with a dirty rect if this swap chain has never swapped before + DXGI_PRESENT_PARAMETERS params = {0, nullptr, nullptr, nullptr}; + result = mSwapChain1->Present1(swapInterval, 0, ¶ms); + } + else + { + RECT rect = {static_cast<LONG>(x), static_cast<LONG>(mHeight - y - height), + static_cast<LONG>(x + width), static_cast<LONG>(mHeight - y)}; + DXGI_PRESENT_PARAMETERS params = {1, &rect, nullptr, nullptr}; + result = mSwapChain1->Present1(swapInterval, 0, ¶ms); + } + } + else + { + result = mSwapChain->Present(swapInterval, 0); + } + + mFirstSwap = false; + + // Some swapping mechanisms such as DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL unbind the current render + // target. Mark it dirty. + mRenderer->getStateManager()->invalidateRenderTarget(); + + if (result == DXGI_ERROR_DEVICE_REMOVED) + { + ERR("Present failed: the D3D11 device was removed: 0x%08X", + mRenderer->getDevice()->GetDeviceRemovedReason()); + return EGL_CONTEXT_LOST; + } + else if (result == DXGI_ERROR_DEVICE_RESET) + { + ERR("Present failed: the D3D11 device was reset from a bad command."); + return EGL_CONTEXT_LOST; + } + else if (FAILED(result)) + { + ERR("Present failed with error code 0x%08X", result); + } + + mNativeWindow->commitChange(); + + return EGL_SUCCESS; +} + +ID3D11Texture2D *SwapChain11::getOffscreenTexture() +{ + return mNeedsOffscreenTexture ? mOffscreenTexture : mBackBufferTexture; +} + +ID3D11RenderTargetView *SwapChain11::getRenderTarget() +{ + return mNeedsOffscreenTexture ? mOffscreenRTView : mBackBufferRTView; +} + +ID3D11ShaderResourceView *SwapChain11::getRenderTargetShaderResource() +{ + return mNeedsOffscreenTexture ? mOffscreenSRView : mBackBufferSRView; +} + +ID3D11DepthStencilView *SwapChain11::getDepthStencil() +{ + return mDepthStencilDSView; +} + +ID3D11ShaderResourceView * SwapChain11::getDepthStencilShaderResource() +{ + return mDepthStencilSRView; +} + +ID3D11Texture2D *SwapChain11::getDepthStencilTexture() +{ + return mDepthStencilTexture; +} + +void SwapChain11::recreate() +{ + // possibly should use this method instead of reset +} + +} // namespace rx |