RendererD3D.cpp

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Author : Qin Jiajia
Date : 2017-06-20 17:16:25
Hash : 1da00653
Message : Remove IndexRange in DrawElements functions This change will remove IndexRange parameter in DrawElements functions. And calculate it until we truly need it. Meanwhile we add direct drawing path to avoid retrieving index range for DrawElements* functions in D3D11 backend. This change may not bring much performance improvement since we still need to retrieve index range in validation at the beginning of every DrawElements* call entry point. BUG=angleproject:1393 Change-Id: I86a8739c0893954c94eb398db62820ced7871565 Reviewed-on: https://chromium-review.googlesource.com/544634 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>
src/libANGLE/renderer/d3d/RendererD3D.cpp
//
// Copyright (c) 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.
//

// RendererD3D.cpp: Implementation of the base D3D Renderer.

#include "libANGLE/renderer/d3d/RendererD3D.h"

#include "common/MemoryBuffer.h"
#include "common/debug.h"
#include "common/utilities.h"
#include "libANGLE/Context.h"
#include "libANGLE/Display.h"
#include "libANGLE/Framebuffer.h"
#include "libANGLE/FramebufferAttachment.h"
#include "libANGLE/ImageIndex.h"
#include "libANGLE/ResourceManager.h"
#include "libANGLE/State.h"
#include "libANGLE/VertexArray.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/ContextImpl.h"
#include "libANGLE/renderer/TextureImpl.h"
#include "libANGLE/renderer/d3d/BufferD3D.h"
#include "libANGLE/renderer/d3d/DeviceD3D.h"
#include "libANGLE/renderer/d3d/DisplayD3D.h"
#include "libANGLE/renderer/d3d/IndexDataManager.h"
#include "libANGLE/renderer/d3d/ProgramD3D.h"
#include "libANGLE/renderer/d3d/SamplerD3D.h"
#include "libANGLE/renderer/d3d/TextureD3D.h"

namespace rx
{

RendererD3D::RendererD3D(egl::Display *display)
    : mDisplay(display),
      mPresentPathFastEnabled(false),
      mCapsInitialized(false),
      mWorkaroundsInitialized(false),
      mDisjoint(false),
      mDeviceLost(false),
      mWorkerThreadPool(4)
{
}

RendererD3D::~RendererD3D()
{
    cleanup();
}

void RendererD3D::cleanup()
{
    for (auto &incompleteTexture : mIncompleteTextures)
    {
        incompleteTexture.second->onDestroy(mDisplay->getProxyContext());
        incompleteTexture.second.set(mDisplay->getProxyContext(), nullptr);
    }
    mIncompleteTextures.clear();
}

bool RendererD3D::skipDraw(const gl::ContextState &data, GLenum drawMode)
{
    const gl::State &state = data.getState();

    if (drawMode == GL_POINTS)
    {
        bool usesPointSize = GetImplAs<ProgramD3D>(state.getProgram())->usesPointSize();

        // ProgramBinary assumes non-point rendering if gl_PointSize isn't written,
        // which affects varying interpolation. Since the value of gl_PointSize is
        // undefined when not written, just skip drawing to avoid unexpected results.
        if (!usesPointSize && !state.isTransformFeedbackActiveUnpaused())
        {
            // Notify developers of risking undefined behavior.
            WARN() << "Point rendering without writing to gl_PointSize.";
            return true;
        }
    }
    else if (gl::IsTriangleMode(drawMode))
    {
        if (state.getRasterizerState().cullFace &&
            state.getRasterizerState().cullMode == GL_FRONT_AND_BACK)
        {
            return true;
        }
    }

    return false;
}

gl::Error RendererD3D::markTransformFeedbackUsage(const gl::ContextState &data)
{
    const gl::TransformFeedback *transformFeedback = data.getState().getCurrentTransformFeedback();
    for (size_t i = 0; i < transformFeedback->getIndexedBufferCount(); i++)
    {
        const gl::OffsetBindingPointer<gl::Buffer> &binding =
            transformFeedback->getIndexedBuffer(i);
        if (binding.get() != nullptr)
        {
            BufferD3D *bufferD3D = GetImplAs<BufferD3D>(binding.get());
            ANGLE_TRY(bufferD3D->markTransformFeedbackUsage());
        }
    }

    return gl::NoError();
}

size_t RendererD3D::getBoundFramebufferTextures(const gl::ContextState &data,
                                                FramebufferTextureArray *outTextureArray)
{
    size_t textureCount = 0;

    const gl::Framebuffer *drawFramebuffer = data.getState().getDrawFramebuffer();
    for (size_t i = 0; i < drawFramebuffer->getNumColorBuffers(); i++)
    {
        const gl::FramebufferAttachment *attachment = drawFramebuffer->getColorbuffer(i);
        if (attachment && attachment->type() == GL_TEXTURE)
        {
            (*outTextureArray)[textureCount++] = attachment->getTexture();
        }
    }

    const gl::FramebufferAttachment *depthStencilAttachment =
        drawFramebuffer->getDepthOrStencilbuffer();
    if (depthStencilAttachment && depthStencilAttachment->type() == GL_TEXTURE)
    {
        (*outTextureArray)[textureCount++] = depthStencilAttachment->getTexture();
    }

    std::sort(outTextureArray->begin(), outTextureArray->begin() + textureCount);

    return textureCount;
}

gl::Texture *RendererD3D::getIncompleteTexture(const gl::Context *context, GLenum type)
{
    if (mIncompleteTextures.find(type) == mIncompleteTextures.end())
    {
        GLImplFactory *implFactory = context->getImplementation();
        const GLubyte color[] = {0, 0, 0, 255};
        const gl::Extents colorSize(1, 1, 1);
        const gl::PixelUnpackState unpack(1, 0);
        const gl::Box area(0, 0, 0, 1, 1, 1);

        // If a texture is external use a 2D texture for the incomplete texture
        GLenum createType = (type == GL_TEXTURE_EXTERNAL_OES) ? GL_TEXTURE_2D : type;

        // Skip the API layer to avoid needing to pass the Context and mess with dirty bits.
        gl::Texture *t =
            new gl::Texture(implFactory, std::numeric_limits<GLuint>::max(), createType);
        if (createType == GL_TEXTURE_2D_MULTISAMPLE)
        {
            t->setStorageMultisample(nullptr, createType, 1, GL_RGBA8, colorSize, true);
        }
        else
        {
            t->setStorage(nullptr, createType, 1, GL_RGBA8, colorSize);
        }
        if (type == GL_TEXTURE_CUBE_MAP)
        {
            for (GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X;
                 face <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; face++)
            {
                t->getImplementation()->setSubImage(nullptr, face, 0, area, GL_RGBA8,
                                                    GL_UNSIGNED_BYTE, unpack, color);
            }
        }
        else if (type == GL_TEXTURE_2D_MULTISAMPLE)
        {
            gl::ColorF clearValue(0, 0, 0, 1);
            gl::ImageIndex index = gl::ImageIndex::Make2DMultisample();
            GetImplAs<TextureD3D>(t)->clearLevel(context, index, clearValue);
        }
        else
        {
            t->getImplementation()->setSubImage(nullptr, createType, 0, area, GL_RGBA8,
                                                GL_UNSIGNED_BYTE, unpack, color);
        }
        mIncompleteTextures[type].set(context, t);
    }

    return mIncompleteTextures[type].get();
}

GLenum RendererD3D::getResetStatus()
{
    if (!mDeviceLost)
    {
        if (testDeviceLost())
        {
            mDeviceLost = true;
            notifyDeviceLost();
            return GL_UNKNOWN_CONTEXT_RESET_EXT;
        }
        return GL_NO_ERROR;
    }

    if (testDeviceResettable())
    {
        return GL_NO_ERROR;
    }

    return GL_UNKNOWN_CONTEXT_RESET_EXT;
}

void RendererD3D::notifyDeviceLost()
{
    mDisplay->notifyDeviceLost();
}

std::string RendererD3D::getVendorString() const
{
    LUID adapterLuid = {0};

    if (getLUID(&adapterLuid))
    {
        char adapterLuidString[64];
        sprintf_s(adapterLuidString, sizeof(adapterLuidString), "(adapter LUID: %08x%08x)",
                  adapterLuid.HighPart, adapterLuid.LowPart);
        return std::string(adapterLuidString);
    }

    return std::string("");
}

void RendererD3D::setGPUDisjoint()
{
    mDisjoint = true;
}

GLint RendererD3D::getGPUDisjoint()
{
    bool disjoint = mDisjoint;

    // Disjoint flag is cleared when read
    mDisjoint = false;

    return disjoint;
}

GLint64 RendererD3D::getTimestamp()
{
    // D3D has no way to get an actual timestamp reliably so 0 is returned
    return 0;
}

void RendererD3D::ensureCapsInitialized() const
{
    if (!mCapsInitialized)
    {
        generateCaps(&mNativeCaps, &mNativeTextureCaps, &mNativeExtensions, &mNativeLimitations);
        mCapsInitialized = true;
    }
}

const gl::Caps &RendererD3D::getNativeCaps() const
{
    ensureCapsInitialized();
    return mNativeCaps;
}

const gl::TextureCapsMap &RendererD3D::getNativeTextureCaps() const
{
    ensureCapsInitialized();
    return mNativeTextureCaps;
}

const gl::Extensions &RendererD3D::getNativeExtensions() const
{
    ensureCapsInitialized();
    return mNativeExtensions;
}

const gl::Limitations &RendererD3D::getNativeLimitations() const
{
    ensureCapsInitialized();
    return mNativeLimitations;
}

angle::WorkerThreadPool *RendererD3D::getWorkerThreadPool()
{
    return &mWorkerThreadPool;
}

bool RendererD3D::isRobustResourceInitEnabled() const
{
    return mDisplay->isRobustResourceInitEnabled();
}

Serial RendererD3D::generateSerial()
{
    return mSerialFactory.generate();
}

bool RendererD3D::instancedPointSpritesActive(ProgramD3D *programD3D, GLenum mode) const
{
    return programD3D->usesPointSize() && programD3D->usesInstancedPointSpriteEmulation() &&
           mode == GL_POINTS;
}

unsigned int GetBlendSampleMask(const gl::State &glState, int samples)
{
    unsigned int mask   = 0;
    if (glState.isSampleCoverageEnabled())
    {
        GLfloat coverageValue = glState.getSampleCoverageValue();
        if (coverageValue != 0)
        {
            float threshold = 0.5f;

            for (int i = 0; i < samples; ++i)
            {
                mask <<= 1;

                if ((i + 1) * coverageValue >= threshold)
                {
                    threshold += 1.0f;
                    mask |= 1;
                }
            }
        }

        bool coverageInvert = glState.getSampleCoverageInvert();
        if (coverageInvert)
        {
            mask = ~mask;
        }
    }
    else
    {
        mask = 0xFFFFFFFF;
    }

    return mask;
}

}  // namespace rx
kc3-lang/angle/src/libANGLE/renderer/d3d/RendererD3D.cpp

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kc3-lang/angle /src/libANGLE/renderer/d3d/RendererD3D.cpp
