gl::Error StateManager9::setBlendDepthRasterStates(const gl::State &glState,
                                                   unsigned int sampleMask)
{
    const gl::Framebuffer *framebuffer = glState.getDrawFramebuffer();

    const gl::BlendState &blendState       = glState.getBlendState();
    const gl::ColorF &blendColor           = glState.getBlendColor();
    const gl::RasterizerState &rasterState = glState.getRasterizerState();

    const auto &depthStencilState = glState.getDepthStencilState();
    bool frontFaceCCW             = (glState.getRasterizerState().frontFace == GL_CCW);
    unsigned int maxStencil       = (1 << mCurStencilSize) - 1;

    // All the depth stencil states depends on the front face ccw variable
    if (frontFaceCCW != mCurFrontFaceCCW)
    {
        forceSetDepthStencilState();
        mCurFrontFaceCCW = frontFaceCCW;
    }

    for (auto dirtyBit : angle::IterateBitSet(mDirtyBits))
    {
        switch (dirtyBit)
        {
            case DIRTY_BIT_BLEND_ENABLED:
                setBlendEnabled(blendState.blend);
                break;
            case DIRTY_BIT_BLEND_COLOR:
                setBlendColor(blendState, blendColor);
                break;
            case DIRTY_BIT_BLEND_FUNCS_EQUATIONS:
                setBlendFuncsEquations(blendState);
                break;
            case DIRTY_BIT_SAMPLE_ALPHA_TO_COVERAGE:
                setSampleAlphaToCoverage(blendState.sampleAlphaToCoverage);
                break;
            case DIRTY_BIT_COLOR_MASK:
                setColorMask(framebuffer, blendState.colorMaskRed, blendState.colorMaskBlue,
                             blendState.colorMaskGreen, blendState.colorMaskAlpha);
                break;
            case DIRTY_BIT_DITHER:
                setDither(blendState.dither);
                break;
            case DIRTY_BIT_CULL_MODE:
                setCullMode(rasterState.cullFace, rasterState.cullMode, rasterState.frontFace);
                break;
            case DIRTY_BIT_DEPTH_BIAS:
                setDepthBias(rasterState.polygonOffsetFill, rasterState.polygonOffsetFactor,
                             rasterState.polygonOffsetUnits);
                break;
            case DIRTY_BIT_STENCIL_DEPTH_MASK:
                setDepthMask(depthStencilState.depthMask);
                break;
            case DIRTY_BIT_STENCIL_DEPTH_FUNC:
                setDepthFunc(depthStencilState.depthTest, depthStencilState.depthFunc);
                break;
            case DIRTY_BIT_STENCIL_TEST_ENABLED:
                setStencilTestEnabled(depthStencilState.stencilTest);
                break;
            case DIRTY_BIT_STENCIL_FUNCS_FRONT:
                setStencilFuncsFront(depthStencilState.stencilFunc, depthStencilState.stencilMask,
                                     glState.getStencilRef(), frontFaceCCW, maxStencil);
                break;
            case DIRTY_BIT_STENCIL_FUNCS_BACK:
                setStencilFuncsBack(depthStencilState.stencilBackFunc,
                                    depthStencilState.stencilBackMask, glState.getStencilBackRef(),
                                    frontFaceCCW, maxStencil);
                break;
            case DIRTY_BIT_STENCIL_WRITEMASK_FRONT:
                setStencilWriteMask(depthStencilState.stencilWritemask, frontFaceCCW);
                break;
            case DIRTY_BIT_STENCIL_WRITEMASK_BACK:
                setStencilBackWriteMask(depthStencilState.stencilBackWritemask, frontFaceCCW);
                break;
            case DIRTY_BIT_STENCIL_OPS_FRONT:
                setStencilOpsFront(depthStencilState.stencilFail,
                                   depthStencilState.stencilPassDepthFail,
                                   depthStencilState.stencilPassDepthPass, frontFaceCCW);
                break;
            case DIRTY_BIT_STENCIL_OPS_BACK:
                setStencilOpsBack(depthStencilState.stencilBackFail,
                                  depthStencilState.stencilBackPassDepthFail,
                                  depthStencilState.stencilBackPassDepthPass, frontFaceCCW);
                break;
            default:
                break;
        }
    }

    if (sampleMask != mCurSampleMask)
    {
        setSampleMask(sampleMask);
    }

    return gl::Error(GL_NO_ERROR);
}
Esempio n. 2
0
gl::Error StateManager11::setDepthStencilState(const gl::State &glState)
{
    const auto &fbo = *glState.getDrawFramebuffer();

    // Disable the depth test/depth write if we are using a stencil-only attachment.
    // This is because ANGLE emulates stencil-only with D24S8 on D3D11 - we should neither read
    // nor write to the unused depth part of this emulated texture.
    bool disableDepth = (!fbo.hasDepth() && fbo.hasStencil());

    // Similarly we disable the stencil portion of the DS attachment if the app only binds depth.
    bool disableStencil = (fbo.hasDepth() && !fbo.hasStencil());

    // CurDisableDepth/Stencil are reset automatically after we call forceSetDepthStencilState.
    if (!mDepthStencilStateIsDirty && mCurDisableDepth.valid() &&
        disableDepth == mCurDisableDepth.value() && mCurDisableStencil.valid() &&
        disableStencil == mCurDisableStencil.value())
    {
        return gl::Error(GL_NO_ERROR);
    }

    const auto &depthStencilState = glState.getDepthStencilState();
    int stencilRef                = glState.getStencilRef();
    int stencilBackRef            = glState.getStencilBackRef();

    // get the maximum size of the stencil ref
    unsigned int maxStencil = 0;
    if (depthStencilState.stencilTest && mCurStencilSize > 0)
    {
        maxStencil = (1 << mCurStencilSize) - 1;
    }
    ASSERT((depthStencilState.stencilWritemask & maxStencil) ==
           (depthStencilState.stencilBackWritemask & maxStencil));
    ASSERT(stencilRef == stencilBackRef);
    ASSERT((depthStencilState.stencilMask & maxStencil) ==
           (depthStencilState.stencilBackMask & maxStencil));

    ID3D11DepthStencilState *dxDepthStencilState = NULL;
    gl::Error error = mRenderer->getStateCache().getDepthStencilState(
        depthStencilState, disableDepth, disableStencil, &dxDepthStencilState);
    if (error.isError())
    {
        return error;
    }

    ASSERT(dxDepthStencilState);

    // Max D3D11 stencil reference value is 0xFF,
    // corresponding to the max 8 bits in a stencil buffer
    // GL specifies we should clamp the ref value to the
    // nearest bit depth when doing stencil ops
    static_assert(D3D11_DEFAULT_STENCIL_READ_MASK == 0xFF,
                  "Unexpected value of D3D11_DEFAULT_STENCIL_READ_MASK");
    static_assert(D3D11_DEFAULT_STENCIL_WRITE_MASK == 0xFF,
                  "Unexpected value of D3D11_DEFAULT_STENCIL_WRITE_MASK");
    UINT dxStencilRef = std::min<UINT>(stencilRef, 0xFFu);

    mRenderer->getDeviceContext()->OMSetDepthStencilState(dxDepthStencilState, dxStencilRef);

    mCurDepthStencilState = depthStencilState;
    mCurStencilRef        = stencilRef;
    mCurStencilBackRef    = stencilBackRef;
    mCurDisableDepth      = disableDepth;
    mCurDisableStencil    = disableStencil;

    mDepthStencilStateIsDirty = false;

    return gl::Error(GL_NO_ERROR);
}