diff options
Diffstat (limited to 'gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/Clear11.cpp')
| -rw-r--r-- | gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/Clear11.cpp | 813 |
1 files changed, 813 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/Clear11.cpp b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/Clear11.cpp new file mode 100644 index 0000000000..d85b18b840 --- /dev/null +++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/Clear11.cpp @@ -0,0 +1,813 @@ + +// Copyright 2013 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. +// + +// Clear11.cpp: Framebuffer clear utility class. + +#include "libANGLE/renderer/d3d/d3d11/Clear11.h" + +#include <algorithm> + +#include "libANGLE/Context.h" +#include "libANGLE/FramebufferAttachment.h" +#include "libANGLE/formatutils.h" +#include "libANGLE/renderer/d3d/FramebufferD3D.h" +#include "libANGLE/renderer/d3d/d3d11/Context11.h" +#include "libANGLE/renderer/d3d/d3d11/RenderTarget11.h" +#include "libANGLE/renderer/d3d/d3d11/Renderer11.h" +#include "libANGLE/renderer/d3d/d3d11/formatutils11.h" +#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h" +#include "libANGLE/trace.h" + +// Precompiled shaders +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clear11_fl9vs.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clear11multiviewgs.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clear11multiviewvs.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clear11vs.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/cleardepth11ps.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11_fl9ps.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps1.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps2.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps3.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps4.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps5.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps6.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps7.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearfloat11ps8.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps1.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps2.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps3.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps4.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps5.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps6.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps7.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearsint11ps8.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps1.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps2.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps3.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps4.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps5.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps6.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps7.h" +#include "libANGLE/renderer/d3d/d3d11/shaders/compiled/clearuint11ps8.h" + +namespace rx +{ + +namespace +{ +constexpr uint32_t g_ConstantBufferSize = sizeof(RtvDsvClearInfo<float>); +constexpr uint32_t g_VertexSize = sizeof(d3d11::PositionVertex); + +// Updates color, depth and alpha components of cached CB if necessary. +// Returns true if any constants are updated, false otherwise. +template <typename T> +bool UpdateDataCache(RtvDsvClearInfo<T> *dataCache, + const gl::Color<T> &color, + const float *zValue, + const uint32_t numRtvs, + const uint8_t writeMask) +{ + bool cacheDirty = false; + + if (numRtvs > 0) + { + const bool writeRGB = (writeMask & ~D3D11_COLOR_WRITE_ENABLE_ALPHA) != 0; + if (writeRGB && memcmp(&dataCache->r, &color.red, sizeof(T) * 3) != 0) + { + dataCache->r = color.red; + dataCache->g = color.green; + dataCache->b = color.blue; + cacheDirty = true; + } + + const bool writeAlpha = (writeMask & D3D11_COLOR_WRITE_ENABLE_ALPHA) != 0; + if (writeAlpha && (dataCache->a != color.alpha)) + { + dataCache->a = color.alpha; + cacheDirty = true; + } + } + + if (zValue) + { + const float clampedZValue = gl::clamp01(*zValue); + + if (clampedZValue != dataCache->z) + { + dataCache->z = clampedZValue; + cacheDirty = true; + } + } + + return cacheDirty; +} + +} // anonymous namespace + +#define CLEARPS(Index) \ + d3d11::LazyShader<ID3D11PixelShader>(g_PS_Clear##Index, ArraySize(g_PS_Clear##Index), \ + "Clear11 PS " ANGLE_STRINGIFY(Index)) + +Clear11::ShaderManager::ShaderManager() + : mIl9(), + mVs9(g_VS_Clear_FL9, ArraySize(g_VS_Clear_FL9), "Clear11 VS FL9"), + mPsFloat9(g_PS_ClearFloat_FL9, ArraySize(g_PS_ClearFloat_FL9), "Clear11 PS FloatFL9"), + mVs(g_VS_Clear, ArraySize(g_VS_Clear), "Clear11 VS"), + mVsMultiview(g_VS_Multiview_Clear, ArraySize(g_VS_Multiview_Clear), "Clear11 VS Multiview"), + mGsMultiview(g_GS_Multiview_Clear, ArraySize(g_GS_Multiview_Clear), "Clear11 GS Multiview"), + mPsDepth(g_PS_ClearDepth, ArraySize(g_PS_ClearDepth), "Clear11 PS Depth"), + mPsFloat{{CLEARPS(Float1), CLEARPS(Float2), CLEARPS(Float3), CLEARPS(Float4), CLEARPS(Float5), + CLEARPS(Float6), CLEARPS(Float7), CLEARPS(Float8)}}, + mPsUInt{{CLEARPS(Uint1), CLEARPS(Uint2), CLEARPS(Uint3), CLEARPS(Uint4), CLEARPS(Uint5), + CLEARPS(Uint6), CLEARPS(Uint7), CLEARPS(Uint8)}}, + mPsSInt{{CLEARPS(Sint1), CLEARPS(Sint2), CLEARPS(Sint3), CLEARPS(Sint4), CLEARPS(Sint5), + CLEARPS(Sint6), CLEARPS(Sint7), CLEARPS(Sint8)}} +{} + +#undef CLEARPS + +Clear11::ShaderManager::~ShaderManager() {} + +angle::Result Clear11::ShaderManager::getShadersAndLayout(const gl::Context *context, + Renderer11 *renderer, + const INT clearType, + const uint32_t numRTs, + const bool hasLayeredLayout, + const d3d11::InputLayout **il, + const d3d11::VertexShader **vs, + const d3d11::GeometryShader **gs, + const d3d11::PixelShader **ps) +{ + Context11 *context11 = GetImplAs<Context11>(context); + + if (renderer->getRenderer11DeviceCaps().featureLevel <= D3D_FEATURE_LEVEL_9_3) + { + ASSERT(clearType == GL_FLOAT); + + ANGLE_TRY(mVs9.resolve(context11, renderer)); + ANGLE_TRY(mPsFloat9.resolve(context11, renderer)); + + if (!mIl9.valid()) + { + const D3D11_INPUT_ELEMENT_DESC ilDesc[] = { + {"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0}}; + + InputElementArray ilDescArray(ilDesc); + ShaderData vertexShader(g_VS_Clear_FL9); + + ANGLE_TRY(renderer->allocateResource(context11, ilDescArray, &vertexShader, &mIl9)); + } + + *vs = &mVs9.getObj(); + *gs = nullptr; + *il = &mIl9; + *ps = &mPsFloat9.getObj(); + return angle::Result::Continue; + } + + if (!hasLayeredLayout) + { + ANGLE_TRY(mVs.resolve(context11, renderer)); + *vs = &mVs.getObj(); + *gs = nullptr; + } + else + { + // For layered framebuffers we have to use the multi-view versions of the VS and GS. + ANGLE_TRY(mVsMultiview.resolve(context11, renderer)); + ANGLE_TRY(mGsMultiview.resolve(context11, renderer)); + *vs = &mVsMultiview.getObj(); + *gs = &mGsMultiview.getObj(); + } + + *il = nullptr; + + if (numRTs == 0) + { + ANGLE_TRY(mPsDepth.resolve(context11, renderer)); + *ps = &mPsDepth.getObj(); + return angle::Result::Continue; + } + + switch (clearType) + { + case GL_FLOAT: + ANGLE_TRY(mPsFloat[numRTs - 1].resolve(context11, renderer)); + *ps = &mPsFloat[numRTs - 1].getObj(); + break; + case GL_UNSIGNED_INT: + ANGLE_TRY(mPsUInt[numRTs - 1].resolve(context11, renderer)); + *ps = &mPsUInt[numRTs - 1].getObj(); + break; + case GL_INT: + ANGLE_TRY(mPsSInt[numRTs - 1].resolve(context11, renderer)); + *ps = &mPsSInt[numRTs - 1].getObj(); + break; + default: + UNREACHABLE(); + break; + } + + return angle::Result::Continue; +} + +Clear11::Clear11(Renderer11 *renderer) + : mRenderer(renderer), + mResourcesInitialized(false), + mScissorEnabledRasterizerState(), + mScissorDisabledRasterizerState(), + mShaderManager(), + mConstantBuffer(), + mVertexBuffer(), + mShaderData({}) +{} + +Clear11::~Clear11() {} + +angle::Result Clear11::ensureResourcesInitialized(const gl::Context *context) +{ + if (mResourcesInitialized) + { + return angle::Result::Continue; + } + + ANGLE_TRACE_EVENT0("gpu.angle", "Clear11::ensureResourcesInitialized"); + + static_assert((sizeof(RtvDsvClearInfo<float>) == sizeof(RtvDsvClearInfo<int>)), + "Size of rx::RtvDsvClearInfo<float> is not equal to rx::RtvDsvClearInfo<int>"); + + static_assert( + (sizeof(RtvDsvClearInfo<float>) == sizeof(RtvDsvClearInfo<uint32_t>)), + "Size of rx::RtvDsvClearInfo<float> is not equal to rx::RtvDsvClearInfo<uint32_t>"); + + static_assert((sizeof(RtvDsvClearInfo<float>) % 16 == 0), + "The size of RtvDsvClearInfo<float> should be a multiple of 16bytes."); + + // Create Rasterizer States + D3D11_RASTERIZER_DESC rsDesc; + rsDesc.FillMode = D3D11_FILL_SOLID; + rsDesc.CullMode = D3D11_CULL_NONE; + rsDesc.FrontCounterClockwise = FALSE; + rsDesc.DepthBias = 0; + rsDesc.DepthBiasClamp = 0.0f; + rsDesc.SlopeScaledDepthBias = 0.0f; + rsDesc.DepthClipEnable = TRUE; + rsDesc.ScissorEnable = FALSE; + rsDesc.MultisampleEnable = FALSE; + rsDesc.AntialiasedLineEnable = FALSE; + + Context11 *context11 = GetImplAs<Context11>(context); + + ANGLE_TRY(mRenderer->allocateResource(context11, rsDesc, &mScissorDisabledRasterizerState)); + mScissorDisabledRasterizerState.setInternalName("Clear11RasterizerStateWithScissorDisabled"); + + rsDesc.ScissorEnable = TRUE; + ANGLE_TRY(mRenderer->allocateResource(context11, rsDesc, &mScissorEnabledRasterizerState)); + mScissorEnabledRasterizerState.setInternalName("Clear11RasterizerStateWithScissorEnabled"); + + // Initialize Depthstencil state with defaults + mDepthStencilStateKey.depthTest = false; + mDepthStencilStateKey.depthMask = false; + mDepthStencilStateKey.depthFunc = GL_ALWAYS; + mDepthStencilStateKey.stencilWritemask = static_cast<GLuint>(-1); + mDepthStencilStateKey.stencilBackWritemask = static_cast<GLuint>(-1); + mDepthStencilStateKey.stencilBackMask = 0; + mDepthStencilStateKey.stencilTest = false; + mDepthStencilStateKey.stencilMask = 0; + mDepthStencilStateKey.stencilFail = GL_REPLACE; + mDepthStencilStateKey.stencilPassDepthFail = GL_REPLACE; + mDepthStencilStateKey.stencilPassDepthPass = GL_REPLACE; + mDepthStencilStateKey.stencilFunc = GL_ALWAYS; + mDepthStencilStateKey.stencilBackFail = GL_REPLACE; + mDepthStencilStateKey.stencilBackPassDepthFail = GL_REPLACE; + mDepthStencilStateKey.stencilBackPassDepthPass = GL_REPLACE; + mDepthStencilStateKey.stencilBackFunc = GL_ALWAYS; + + // Initialize BlendStateKey with defaults + mBlendStateKey.blendStateExt = gl::BlendStateExt(mRenderer->getNativeCaps().maxDrawBuffers); + + mResourcesInitialized = true; + return angle::Result::Continue; +} + +bool Clear11::useVertexBuffer() const +{ + return (mRenderer->getRenderer11DeviceCaps().featureLevel <= D3D_FEATURE_LEVEL_9_3); +} + +angle::Result Clear11::ensureConstantBufferCreated(const gl::Context *context) +{ + if (mConstantBuffer.valid()) + { + return angle::Result::Continue; + } + + // Create constant buffer for color & depth data + + D3D11_BUFFER_DESC bufferDesc; + bufferDesc.ByteWidth = g_ConstantBufferSize; + bufferDesc.Usage = D3D11_USAGE_DYNAMIC; + bufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER; + bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; + bufferDesc.MiscFlags = 0; + bufferDesc.StructureByteStride = 0; + + D3D11_SUBRESOURCE_DATA initialData; + initialData.pSysMem = &mShaderData; + initialData.SysMemPitch = g_ConstantBufferSize; + initialData.SysMemSlicePitch = g_ConstantBufferSize; + + ANGLE_TRY(mRenderer->allocateResource(GetImplAs<Context11>(context), bufferDesc, &initialData, + &mConstantBuffer)); + mConstantBuffer.setInternalName("Clear11ConstantBuffer"); + return angle::Result::Continue; +} + +angle::Result Clear11::ensureVertexBufferCreated(const gl::Context *context) +{ + ASSERT(useVertexBuffer()); + + if (mVertexBuffer.valid()) + { + return angle::Result::Continue; + } + + // Create vertex buffer with vertices for a quad covering the entire surface + + static_assert((sizeof(d3d11::PositionVertex) % 16) == 0, + "d3d11::PositionVertex should be a multiple of 16 bytes"); + const d3d11::PositionVertex vbData[6] = {{-1.0f, 1.0f, 0.0f, 1.0f}, {1.0f, -1.0f, 0.0f, 1.0f}, + {-1.0f, -1.0f, 0.0f, 1.0f}, {-1.0f, 1.0f, 0.0f, 1.0f}, + {1.0f, 1.0f, 0.0f, 1.0f}, {1.0f, -1.0f, 0.0f, 1.0f}}; + + const UINT vbSize = sizeof(vbData); + + D3D11_BUFFER_DESC bufferDesc; + bufferDesc.ByteWidth = vbSize; + bufferDesc.Usage = D3D11_USAGE_IMMUTABLE; + bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER; + bufferDesc.CPUAccessFlags = 0; + bufferDesc.MiscFlags = 0; + bufferDesc.StructureByteStride = 0; + + D3D11_SUBRESOURCE_DATA initialData; + initialData.pSysMem = vbData; + initialData.SysMemPitch = vbSize; + initialData.SysMemSlicePitch = initialData.SysMemPitch; + + ANGLE_TRY(mRenderer->allocateResource(GetImplAs<Context11>(context), bufferDesc, &initialData, + &mVertexBuffer)); + mVertexBuffer.setInternalName("Clear11VertexBuffer"); + return angle::Result::Continue; +} + +angle::Result Clear11::clearFramebuffer(const gl::Context *context, + const ClearParameters &clearParams, + const gl::FramebufferState &fboData) +{ + ANGLE_TRY(ensureResourcesInitialized(context)); + + // Iterate over the color buffers which require clearing and determine if they can be + // cleared with ID3D11DeviceContext::ClearRenderTargetView or ID3D11DeviceContext1::ClearView. + // This requires: + // 1) The render target is being cleared to a float value (will be cast to integer when clearing + // integer render targets as expected but does not work the other way around) + // 2) The format of the render target has no color channels that are currently masked out. + // Clear the easy-to-clear buffers on the spot and accumulate the ones that require special + // work. + // + // If these conditions are met, and: + // - No scissored clear is needed, then clear using ID3D11DeviceContext::ClearRenderTargetView. + // - A scissored clear is needed then clear using ID3D11DeviceContext1::ClearView if available. + // Otherwise perform a shader based clear. + // + // Also determine if the DSV can be cleared withID3D11DeviceContext::ClearDepthStencilView by + // checking if the stencil write mask covers the entire stencil. + // + // To clear the remaining buffers, a shader based clear is performed: + // - The appropriate ShaderManagers (VS & PS) for the clearType is set + // - A CB containing the clear color and Z values is bound + // - An IL and VB are bound (for FL93 and below) + // - ScissorRect/Raststate/Viewport set as required + // - Blendstate set containing appropriate colorMasks + // - DepthStencilState set with appropriate parameters for a z or stencil clear if required + // - Color and/or Z buffers to be cleared are bound + // - Primitive covering entire clear area is drawn + + gl::Extents framebufferSize; + + const auto *depthStencilAttachment = fboData.getDepthOrStencilAttachment(); + if (depthStencilAttachment != nullptr) + { + framebufferSize = depthStencilAttachment->getSize(); + } + else + { + const gl::FramebufferAttachment *colorAttachment = fboData.getFirstColorAttachment(); + ASSERT(colorAttachment); + framebufferSize = colorAttachment->getSize(); + } + + bool needScissoredClear = false; + D3D11_RECT scissorRect; + if (clearParams.scissorEnabled) + { + if (clearParams.scissor.x >= framebufferSize.width || + clearParams.scissor.y >= framebufferSize.height || clearParams.scissor.width == 0 || + clearParams.scissor.height == 0) + { + // The check assumes that the viewport offsets are not negative as according to the + // OVR_multiview2 spec. + // Scissor rect is outside the renderbuffer or is an empty rect. + return angle::Result::Continue; + } + + if (clearParams.scissor.x + clearParams.scissor.width <= 0 || + clearParams.scissor.y + clearParams.scissor.height <= 0) + { + // Scissor rect is outside the renderbuffer. + return angle::Result::Continue; + } + needScissoredClear = + clearParams.scissor.x > 0 || clearParams.scissor.y > 0 || + clearParams.scissor.x + clearParams.scissor.width < framebufferSize.width || + clearParams.scissor.y + clearParams.scissor.height < framebufferSize.height; + + if (needScissoredClear) + { + // Apply viewport offsets to compute the final scissor rectangles. + // Even in multiview all layers share the same viewport and scissor. + scissorRect.left = clearParams.scissor.x; + scissorRect.right = scissorRect.left + clearParams.scissor.width; + scissorRect.top = clearParams.scissor.y; + scissorRect.bottom = scissorRect.top + clearParams.scissor.height; + } + } + + ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext(); + ID3D11DeviceContext1 *deviceContext1 = mRenderer->getDeviceContext1IfSupported(); + + std::array<ID3D11RenderTargetView *, D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT> rtvs; + std::array<uint8_t, D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT> rtvMasks = {}; + + uint32_t numRtvs = 0; + uint8_t commonColorMask = 0; + + const auto &colorAttachments = fboData.getColorAttachments(); + for (auto colorAttachmentIndex : fboData.getEnabledDrawBuffers()) + { + const uint8_t colorMask = gl::BlendStateExt::ColorMaskStorage::GetValueIndexed( + colorAttachmentIndex, clearParams.colorMask); + + commonColorMask |= colorMask; + + const gl::FramebufferAttachment &attachment = colorAttachments[colorAttachmentIndex]; + + if (!clearParams.clearColor[colorAttachmentIndex]) + { + continue; + } + + RenderTarget11 *renderTarget = nullptr; + ANGLE_TRY(attachment.getRenderTarget(context, attachment.getRenderToTextureSamples(), + &renderTarget)); + + const gl::InternalFormat &formatInfo = *attachment.getFormat().info; + + if (clearParams.colorType == GL_FLOAT && + !(formatInfo.componentType == GL_FLOAT || + formatInfo.componentType == GL_UNSIGNED_NORMALIZED || + formatInfo.componentType == GL_SIGNED_NORMALIZED)) + { + WARN() << "It is undefined behaviour to clear a render buffer which is not " + "normalized fixed point or floating-point to floating point values (color " + "attachment " + << colorAttachmentIndex << " has internal format " << attachment.getFormat() + << ")."; + } + + bool r, g, b, a; + gl::BlendStateExt::UnpackColorMask(colorMask, &r, &g, &b, &a); + if ((formatInfo.redBits == 0 || !r) && (formatInfo.greenBits == 0 || !g) && + (formatInfo.blueBits == 0 || !b) && (formatInfo.alphaBits == 0 || !a)) + { + // Every channel either does not exist in the render target or is masked out + continue; + } + + const auto &framebufferRTV = renderTarget->getRenderTargetView(); + ASSERT(framebufferRTV.valid()); + + bool canClearView = mRenderer->getRenderer11DeviceCaps().supportsClearView; + if (canClearView && + mRenderer->getFeatures().emulateClearViewAfterDualSourceBlending.enabled) + { + // Check the current state to see if we were using dual source blending + const auto isDualSource = [](const auto blend) { + switch (blend) + { + case D3D11_BLEND_SRC1_COLOR: + case D3D11_BLEND_INV_SRC1_COLOR: + case D3D11_BLEND_SRC1_ALPHA: + case D3D11_BLEND_INV_SRC1_ALPHA: + return true; + default: + return false; + } + }; + FLOAT blendFactor[4]; + UINT sampleMask; + ID3D11BlendState *blendState; + deviceContext->OMGetBlendState(&blendState, blendFactor, &sampleMask); + if (blendState) + { + D3D11_BLEND_DESC blendDesc; + blendState->GetDesc(&blendDesc); + // You can only use dual source blending on slot 0 so only check there + if (isDualSource(blendDesc.RenderTarget[0].SrcBlend) || + isDualSource(blendDesc.RenderTarget[0].DestBlend) || + isDualSource(blendDesc.RenderTarget[0].SrcBlendAlpha) || + isDualSource(blendDesc.RenderTarget[0].DestBlendAlpha)) + { + canClearView = false; + } + } + } + + if (needScissoredClear && mRenderer->getFeatures().scissoredClearArtifacts.enabled) + { + canClearView = false; + } + + if ((!canClearView && needScissoredClear) || clearParams.colorType != GL_FLOAT || + (formatInfo.redBits > 0 && !r) || (formatInfo.greenBits > 0 && !g) || + (formatInfo.blueBits > 0 && !b) || (formatInfo.alphaBits > 0 && !a)) + { + rtvs[numRtvs] = framebufferRTV.get(); + rtvMasks[numRtvs] = gl_d3d11::GetColorMask(formatInfo) & colorMask; + numRtvs++; + } + else + { + // ID3D11DeviceContext::ClearRenderTargetView or ID3D11DeviceContext1::ClearView is + // possible + + const auto &nativeFormat = renderTarget->getFormatSet().format(); + + // Check if the actual format has a channel that the internal format does not and + // set them to the default values + float clearValues[4] = { + ((formatInfo.redBits == 0 && nativeFormat.redBits > 0) ? 0.0f + : clearParams.colorF.red), + ((formatInfo.greenBits == 0 && nativeFormat.greenBits > 0) + ? 0.0f + : clearParams.colorF.green), + ((formatInfo.blueBits == 0 && nativeFormat.blueBits > 0) ? 0.0f + : clearParams.colorF.blue), + ((formatInfo.alphaBits == 0 && nativeFormat.alphaBits > 0) + ? 1.0f + : clearParams.colorF.alpha), + }; + + if (formatInfo.alphaBits == 1) + { + // Some drivers do not correctly handle calling Clear() on a format with 1-bit + // alpha. They can incorrectly round all non-zero values up to 1.0f. Note that + // WARP does not do this. We should handle the rounding for them instead. + clearValues[3] = (clearParams.colorF.alpha >= 0.5f) ? 1.0f : 0.0f; + } + + if (needScissoredClear) + { + // We shouldn't reach here if deviceContext1 is unavailable. + ASSERT(deviceContext1); + deviceContext1->ClearView(framebufferRTV.get(), clearValues, &scissorRect, 1); + if (mRenderer->getFeatures().callClearTwice.enabled) + { + deviceContext1->ClearView(framebufferRTV.get(), clearValues, &scissorRect, 1); + } + } + else + { + deviceContext->ClearRenderTargetView(framebufferRTV.get(), clearValues); + if (mRenderer->getFeatures().callClearTwice.enabled) + { + deviceContext->ClearRenderTargetView(framebufferRTV.get(), clearValues); + } + } + } + } + + ID3D11DepthStencilView *dsv = nullptr; + + if (clearParams.clearDepth || clearParams.clearStencil) + { + RenderTarget11 *depthStencilRenderTarget = nullptr; + + ASSERT(depthStencilAttachment != nullptr); + ANGLE_TRY(depthStencilAttachment->getRenderTarget( + context, depthStencilAttachment->getRenderToTextureSamples(), + &depthStencilRenderTarget)); + + dsv = depthStencilRenderTarget->getDepthStencilView().get(); + ASSERT(dsv != nullptr); + + const auto &nativeFormat = depthStencilRenderTarget->getFormatSet().format(); + const auto *stencilAttachment = fboData.getStencilAttachment(); + + uint32_t stencilUnmasked = + (stencilAttachment != nullptr) ? (1 << nativeFormat.stencilBits) - 1 : 0; + bool needMaskedStencilClear = + clearParams.clearStencil && + (clearParams.stencilWriteMask & stencilUnmasked) != stencilUnmasked; + + if (!needScissoredClear && !needMaskedStencilClear) + { + const UINT clearFlags = (clearParams.clearDepth ? D3D11_CLEAR_DEPTH : 0) | + (clearParams.clearStencil ? D3D11_CLEAR_STENCIL : 0); + const FLOAT depthClear = gl::clamp01(clearParams.depthValue); + const UINT8 stencilClear = clearParams.stencilValue & 0xFF; + + deviceContext->ClearDepthStencilView(dsv, clearFlags, depthClear, stencilClear); + + dsv = nullptr; + } + } + + if (numRtvs == 0 && dsv == nullptr) + { + return angle::Result::Continue; + } + + // Clear the remaining render targets and depth stencil in one pass by rendering a quad: + // + // IA/VS: Vertices containing position and color members are passed through to the next stage. + // The vertex position has XY coordinates equal to clip extents and a Z component equal to the + // Z clear value. The vertex color contains the clear color. + // + // Rasterizer: Viewport scales the VS output over the entire surface and depending on whether + // or not scissoring is enabled the appropriate scissor rect and rasterizerState with or without + // the scissor test enabled is set as well. + // + // DepthStencilTest: DepthTesting, DepthWrites, StencilMask and StencilWrites will be enabled or + // disabled or set depending on what the input depthStencil clear parameters are. Since the PS + // is not writing out depth or rejecting pixels, this should happen prior to the PS stage. + // + // PS: Will write out the color values passed through from the previous stage to all outputs. + // + // OM: BlendState will perform the required color masking and output to RTV(s). + + // + // ====================================================================================== + // + // Luckily, the gl spec (ES 3.0.2 pg 183) states that the results of clearing a render- + // buffer that is not normalized fixed point or floating point with floating point values + // are undefined so we can just write floats to them and D3D11 will bit cast them to + // integers. + // + // Also, we don't have to worry about attempting to clear a normalized fixed/floating point + // buffer with integer values because there is no gl API call which would allow it, + // glClearBuffer* calls only clear a single renderbuffer at a time which is verified to + // be a compatible clear type. + + ASSERT(numRtvs <= static_cast<uint32_t>(mRenderer->getNativeCaps().maxDrawBuffers)); + + // Setup BlendStateKey parameters + mBlendStateKey.blendStateExt.setColorMask(false, false, false, false); + for (size_t i = 0; i < numRtvs; i++) + { + mBlendStateKey.blendStateExt.setColorMaskIndexed(i, rtvMasks[i]); + } + + mBlendStateKey.rtvMax = static_cast<uint16_t>(numRtvs); + + // Get BlendState + const d3d11::BlendState *blendState = nullptr; + ANGLE_TRY(mRenderer->getBlendState(context, mBlendStateKey, &blendState)); + + const d3d11::DepthStencilState *dsState = nullptr; + const float *zValue = nullptr; + + if (dsv) + { + // Setup DepthStencilStateKey + mDepthStencilStateKey.depthTest = clearParams.clearDepth; + mDepthStencilStateKey.depthMask = clearParams.clearDepth; + mDepthStencilStateKey.stencilWritemask = clearParams.stencilWriteMask; + mDepthStencilStateKey.stencilTest = clearParams.clearStencil; + + // Get DepthStencilState + ANGLE_TRY(mRenderer->getDepthStencilState(context, mDepthStencilStateKey, &dsState)); + zValue = clearParams.clearDepth ? &clearParams.depthValue : nullptr; + } + + bool dirtyCb = false; + + // Compare the input color/z values against the CB cache and update it if necessary + switch (clearParams.colorType) + { + case GL_FLOAT: + dirtyCb = + UpdateDataCache(&mShaderData, clearParams.colorF, zValue, numRtvs, commonColorMask); + break; + case GL_UNSIGNED_INT: + dirtyCb = UpdateDataCache(reinterpret_cast<RtvDsvClearInfo<uint32_t> *>(&mShaderData), + clearParams.colorUI, zValue, numRtvs, commonColorMask); + break; + case GL_INT: + dirtyCb = UpdateDataCache(reinterpret_cast<RtvDsvClearInfo<int> *>(&mShaderData), + clearParams.colorI, zValue, numRtvs, commonColorMask); + break; + default: + UNREACHABLE(); + break; + } + + ANGLE_TRY(ensureConstantBufferCreated(context)); + + if (dirtyCb) + { + // Update the constant buffer with the updated cache contents + // TODO(Shahmeer): Consider using UpdateSubresource1 D3D11_COPY_DISCARD where possible. + D3D11_MAPPED_SUBRESOURCE mappedResource; + ANGLE_TRY(mRenderer->mapResource(context, mConstantBuffer.get(), 0, D3D11_MAP_WRITE_DISCARD, + 0, &mappedResource)); + + memcpy(mappedResource.pData, &mShaderData, g_ConstantBufferSize); + deviceContext->Unmap(mConstantBuffer.get(), 0); + } + + auto *stateManager = mRenderer->getStateManager(); + + // Set the viewport to be the same size as the framebuffer. + stateManager->setSimpleViewport(framebufferSize); + + // Apply state + stateManager->setSimpleBlendState(blendState); + + const UINT stencilValue = clearParams.stencilValue & 0xFF; + stateManager->setDepthStencilState(dsState, stencilValue); + + if (needScissoredClear) + { + stateManager->setRasterizerState(&mScissorEnabledRasterizerState); + } + else + { + stateManager->setRasterizerState(&mScissorDisabledRasterizerState); + } + + // Get Shaders + const d3d11::VertexShader *vs = nullptr; + const d3d11::GeometryShader *gs = nullptr; + const d3d11::InputLayout *il = nullptr; + const d3d11::PixelShader *ps = nullptr; + const bool hasLayeredLayout = (fboData.isMultiview()); + ANGLE_TRY(mShaderManager.getShadersAndLayout(context, mRenderer, clearParams.colorType, numRtvs, + hasLayeredLayout, &il, &vs, &gs, &ps)); + + // Apply Shaders + stateManager->setDrawShaders(vs, gs, ps); + stateManager->setPixelConstantBuffer(0, &mConstantBuffer); + + // Bind IL & VB if needed + stateManager->setIndexBuffer(nullptr, DXGI_FORMAT_UNKNOWN, 0); + stateManager->setInputLayout(il); + + if (useVertexBuffer()) + { + ANGLE_TRY(ensureVertexBufferCreated(context)); + stateManager->setSingleVertexBuffer(&mVertexBuffer, g_VertexSize, 0); + } + else + { + stateManager->setSingleVertexBuffer(nullptr, 0, 0); + } + + stateManager->setPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST); + + // Apply render targets + stateManager->setRenderTargets(&rtvs[0], numRtvs, dsv); + + if (needScissoredClear) + { + stateManager->setScissorRectD3D(scissorRect); + } + // Draw the fullscreen quad. + if (!hasLayeredLayout) + { + deviceContext->Draw(6, 0); + } + else + { + ASSERT(hasLayeredLayout); + deviceContext->DrawInstanced(6, static_cast<UINT>(fboData.getNumViews()), 0, 0); + } + + return angle::Result::Continue; +} + +} // namespace rx |