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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qsgdefaultinternalimagenode_p.h"
#include <private/qsgdefaultrendercontext_p.h>
#include <private/qsgmaterialshader_p.h>
#include <private/qsgtexturematerial_p.h>
#include <qopenglfunctions.h>
#include <QtCore/qmath.h>
#include <rhi/qrhi.h>
QT_BEGIN_NAMESPACE
class SmoothTextureMaterialRhiShader : public QSGTextureMaterialRhiShader
{
public:
SmoothTextureMaterialRhiShader(int viewCount);
bool updateUniformData(RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) override;
};
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(QSGRendererInterface::RenderMode renderMode) const
{
Q_UNUSED(renderMode);
return new SmoothTextureMaterialRhiShader(viewCount());
}
SmoothTextureMaterialRhiShader::SmoothTextureMaterialRhiShader(int viewCount)
: QSGTextureMaterialRhiShader(viewCount)
{
setShaderFileName(VertexStage, QStringLiteral(":/qt-project.org/scenegraph/shaders_ng/smoothtexture.vert.qsb"), viewCount);
setShaderFileName(FragmentStage, QStringLiteral(":/qt-project.org/scenegraph/shaders_ng/smoothtexture.frag.qsb"), viewCount);
}
bool SmoothTextureMaterialRhiShader::updateUniformData(RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial)
{
bool changed = false;
QByteArray *buf = state.uniformData();
const int shaderMatrixCount = newMaterial->viewCount();
if (!oldMaterial) {
// The viewport is constant, so set the pixel size uniform only once (per batches with the same material).
const QRect r = state.viewportRect();
const QVector2D v(2.0f / r.width(), 2.0f / r.height());
// mat4 matrix, float opacity, vec2 pixelSize, and the vec2 must be 2*4 aligned
memcpy(buf->data() + 64 * shaderMatrixCount + 8, &v, 8);
changed = true;
}
changed |= QSGTextureMaterialRhiShader::updateUniformData(state, newMaterial, oldMaterial);
return changed;
}
QSGDefaultInternalImageNode::QSGDefaultInternalImageNode(QSGDefaultRenderContext *rc)
: m_rc(rc)
{
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(nullptr);
} 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 npotSupported = m_rc->rhi() && m_rc->rhi()->isFeatureSupported(QRhi::NPOTTextureRepeat);
return npotSupported || (isPowerOfTwo(size.width()) && isPowerOfTwo(size.height()));
}
QT_END_NAMESPACE
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