Method _setTextureUnitSettings

OgreMain/src/OgreRenderSystem.cpp:420–465

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    }
    //-----------------------------------------------------------------------
    void RenderSystem::_setTextureUnitSettings(size_t texUnit, TextureUnitState& tl)
    {
        if(texUnit >= getCapabilities()->getNumTextureUnits())
            return;

        // This method is only ever called to set a texture unit to valid details
        // The method _disableTextureUnit is called to turn a unit off
        TexturePtr tex = tl._getTexturePtr();
        if(!tex || tl.isTextureLoadFailing())
            tex = mTextureManager->_getWarningTexture();

        if(tl.getUnorderedAccessMipLevel() > -1)
        {
            tex->createShaderAccessPoint(texUnit, TA_READ_WRITE, tl.getUnorderedAccessMipLevel());
            return;
        }

        // Bind texture (may be blank)
        _setTexture(texUnit, true, tex);

        _setSampler(texUnit, *tl.getSampler());

        if(!getCapabilities()->hasCapability(RSC_FIXED_FUNCTION))
            return;

        // Set texture coordinate set
        _setTextureCoordSet(texUnit, tl.getTextureCoordSet());

        // Set blend modes
        // Note, colour before alpha is important
        _setTextureBlendMode(texUnit, tl.getColourBlendMode());
        _setTextureBlendMode(texUnit, tl.getAlphaBlendMode());

        auto calcMode = tl._deriveTexCoordCalcMethod();
        if(calcMode == TEXCALC_PROJECTIVE_TEXTURE)
        {
            _setTextureCoordCalculation(texUnit, calcMode, tl.getProjectiveTexturingFrustum());
        }
        else
        {
            _setTextureCoordCalculation(texUnit, calcMode);
        }

        // Change tetxure matrix 
        _setTextureMatrix(texUnit, tl.getTextureTransform());
    }
    //-----------------------------------------------------------------------
    void RenderSystem::_disableTextureUnit(size_t texUnit)
    {