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Diffstat (limited to 'src/quick/scenegraph/qsgdefaultinternalimagenode.cpp')
| -rw-r--r-- | src/quick/scenegraph/qsgdefaultinternalimagenode.cpp | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp b/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp new file mode 100644 index 0000000000..1d54628acd --- /dev/null +++ b/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp @@ -0,0 +1,226 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsgdefaultinternalimagenode_p.h" +#include <private/qsgmaterialshader_p.h> +#include <private/qsgtexturematerial_p.h> +#include <QtGui/qopenglfunctions.h> +#include <QtCore/qmath.h> + +QT_BEGIN_NAMESPACE + +class SmoothTextureMaterialShader : public QSGTextureMaterialShader +{ +public: + SmoothTextureMaterialShader(); + + virtual void updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect); + virtual char const *const *attributeNames() const; + +protected: + virtual void initialize(); + + int m_pixelSizeLoc; +}; + + +QSGSmoothTextureMaterial::QSGSmoothTextureMaterial() +{ + setFlag(RequiresFullMatrixExceptTranslate, true); + setFlag(Blending, true); +} + +void QSGSmoothTextureMaterial::setTexture(QSGTexture *texture) +{ + m_texture = texture; +} + +QSGMaterialType *QSGSmoothTextureMaterial::type() const +{ + static QSGMaterialType type; + return &type; +} + +QSGMaterialShader *QSGSmoothTextureMaterial::createShader() const +{ + return new SmoothTextureMaterialShader; +} + +SmoothTextureMaterialShader::SmoothTextureMaterialShader() + : QSGTextureMaterialShader() +{ + setShaderSourceFile(QOpenGLShader::Vertex, QStringLiteral(":/qt-project.org/scenegraph/shaders/smoothtexture.vert")); + setShaderSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/qt-project.org/scenegraph/shaders/smoothtexture.frag")); +} + +void SmoothTextureMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect) +{ + if (oldEffect == 0) { + // The viewport is constant, so set the pixel size uniform only once. + QRect r = state.viewportRect(); + program()->setUniformValue(m_pixelSizeLoc, 2.0f / r.width(), 2.0f / r.height()); + } + QSGTextureMaterialShader::updateState(state, newEffect, oldEffect); +} + +char const *const *SmoothTextureMaterialShader::attributeNames() const +{ + static char const *const attributes[] = { + "vertex", + "multiTexCoord", + "vertexOffset", + "texCoordOffset", + 0 + }; + return attributes; +} + +void SmoothTextureMaterialShader::initialize() +{ + m_pixelSizeLoc = program()->uniformLocation("pixelSize"); + QSGTextureMaterialShader::initialize(); +} + +QSGDefaultInternalImageNode::QSGDefaultInternalImageNode() +{ + setMaterial(&m_materialO); + setOpaqueMaterial(&m_material); +} + +void QSGDefaultInternalImageNode::setFiltering(QSGTexture::Filtering filtering) +{ + if (m_material.filtering() == filtering) + return; + + m_material.setFiltering(filtering); + m_materialO.setFiltering(filtering); + m_smoothMaterial.setFiltering(filtering); + markDirty(DirtyMaterial); +} + +void QSGDefaultInternalImageNode::setMipmapFiltering(QSGTexture::Filtering filtering) +{ + if (m_material.mipmapFiltering() == filtering) + return; + + m_material.setMipmapFiltering(filtering); + m_materialO.setMipmapFiltering(filtering); + m_smoothMaterial.setMipmapFiltering(filtering); + markDirty(DirtyMaterial); +} + +void QSGDefaultInternalImageNode::setVerticalWrapMode(QSGTexture::WrapMode wrapMode) +{ + if (m_material.verticalWrapMode() == wrapMode) + return; + + m_material.setVerticalWrapMode(wrapMode); + m_materialO.setVerticalWrapMode(wrapMode); + m_smoothMaterial.setVerticalWrapMode(wrapMode); + markDirty(DirtyMaterial); +} + +void QSGDefaultInternalImageNode::setHorizontalWrapMode(QSGTexture::WrapMode wrapMode) +{ + if (m_material.horizontalWrapMode() == wrapMode) + return; + + m_material.setHorizontalWrapMode(wrapMode); + m_materialO.setHorizontalWrapMode(wrapMode); + m_smoothMaterial.setHorizontalWrapMode(wrapMode); + markDirty(DirtyMaterial); +} + +void QSGDefaultInternalImageNode::updateMaterialAntialiasing() +{ + if (m_antialiasing) { + setMaterial(&m_smoothMaterial); + setOpaqueMaterial(0); + } else { + setMaterial(&m_materialO); + setOpaqueMaterial(&m_material); + } +} + +void QSGDefaultInternalImageNode::setMaterialTexture(QSGTexture *texture) +{ + m_material.setTexture(texture); + m_materialO.setTexture(texture); + m_smoothMaterial.setTexture(texture); +} + +QSGTexture *QSGDefaultInternalImageNode::materialTexture() const +{ + return m_material.texture(); +} + +bool QSGDefaultInternalImageNode::updateMaterialBlending() +{ + const bool alpha = m_material.flags() & QSGMaterial::Blending; + if (materialTexture() && alpha != materialTexture()->hasAlphaChannel()) { + m_material.setFlag(QSGMaterial::Blending, !alpha); + return true; + } + return false; +} + +inline static bool isPowerOfTwo(int x) +{ + // Assumption: x >= 1 + return x == (x & -x); +} + +bool QSGDefaultInternalImageNode::supportsWrap(const QSize &size) const +{ + bool wrapSupported = true; + + QOpenGLContext *ctx = QOpenGLContext::currentContext(); +#ifndef QT_OPENGL_ES_2 + if (ctx->isOpenGLES()) +#endif + { + bool npotSupported = ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::NPOTTextureRepeat); + const bool isNpot = !isPowerOfTwo(size.width()) || !isPowerOfTwo(size.height()); + wrapSupported = npotSupported || !isNpot; + } + + return wrapSupported; +} + +QT_END_NAMESPACE |