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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Quick 3D.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtQuick3DRender/private/qssgrendercontext_p.h>
#include <QtQuick3DRender/private/qssgrendertexturebase_p.h>
#include <limits>
QT_BEGIN_NAMESPACE
class QSSGRenderTextureSampler
{
public:
QSSGRenderTextureMinifyingOp minFilter = QSSGRenderTextureMinifyingOp::Linear;
QSSGRenderTextureMagnifyingOp magFilter = QSSGRenderTextureMagnifyingOp::Linear;
QSSGRenderTextureCoordOp wrapS = QSSGRenderTextureCoordOp::ClampToEdge;
QSSGRenderTextureCoordOp wrapT = QSSGRenderTextureCoordOp::ClampToEdge;
QSSGRenderTextureCoordOp wrapR = QSSGRenderTextureCoordOp::ClampToEdge;
QSSGRenderTextureSwizzleMode swizzleMode = QSSGRenderTextureSwizzleMode::NoSwizzle;
float minLod = -1000.;
float maxLod = 1000.;
float lodBias = 0.;
QSSGRenderTextureCompareMode compareMode = QSSGRenderTextureCompareMode::NoCompare;
QSSGRenderTextureCompareOp compareOp = QSSGRenderTextureCompareOp::LessThanOrEqual;
float m_anisotropy = 1.;
/**
* @brief constructor
*
* @param[in] context Pointer to context
* @param[in] fnd Pointer to foundation
* @param[in] minFilter Texture min filter
* @param[in] magFilter Texture mag filter
* @param[in] wrapS Texture coord generation for S
* @param[in] wrapT Texture coord generation for T
* @param[in] wrapR Texture coord generation for R
* @param[in] swizzleMode Texture swizzle mode
* @param[in] minLod Texture min level of detail
* @param[in] maxLod Texture max level of detail
* @param[in] lodBias Texture level of detail bias (unused)
* @param[in] compareMode Texture compare mode
* @param[in] compareFunc Texture compare function
* @param[in] anisoFilter Aniso filter value [1.0, 16.0]
* @param[in] borderColor Texture border color float[4] (unused)
*
* @return No return.
*/
explicit QSSGRenderTextureSampler(const QSSGRef<QSSGRenderContext> &context)
: m_backend(context->backend())
, m_handle(nullptr)
{
// create backend handle
m_handle = m_backend->createSampler();
}
~QSSGRenderTextureSampler()
{
if (m_handle)
m_backend->releaseSampler(m_handle);
}
/**
* @brief get the backend object handle
*
* @return the backend object handle.
*/
QSSGRenderBackend::QSSGRenderBackendSamplerObject handle() const { return m_handle; }
private:
QSSGRef<QSSGRenderBackend> m_backend; ///< pointer to backend
QSSGRenderBackend::QSSGRenderBackendSamplerObject m_handle = nullptr;
};
QSSGRenderTextureBase::QSSGRenderTextureBase(const QSSGRef<QSSGRenderContext> &context,
QSSGRenderTextureTargetType texTarget,
bool ownsTexture)
: m_context(context)
, m_backend(context->backend())
, m_handle(nullptr)
, m_textureUnit(std::numeric_limits<qint32>::max())
, m_samplerParamsDirty(true)
, m_texStateDirty(false)
, m_sampleCount(1)
, m_format(QSSGRenderTextureFormat::Unknown)
, m_texTarget(texTarget)
, m_baseLevel(0)
, m_maxLevel(1000)
, m_maxMipLevel(0)
, m_immutable(false)
, m_ownsTexture(ownsTexture)
{
if (m_ownsTexture)
m_handle = m_backend->createTexture();
m_sampler = new QSSGRenderTextureSampler(context);
}
QSSGRenderTextureBase::~QSSGRenderTextureBase()
{
if (m_sampler)
delete m_sampler;
if (m_handle && m_ownsTexture)
m_backend->releaseTexture(m_handle);
}
void QSSGRenderTextureBase::setBaseLevel(qint32 value)
{
if (m_baseLevel != value) {
m_baseLevel = value;
m_texStateDirty = true;
}
}
void QSSGRenderTextureBase::setMaxLevel(qint32 value)
{
if (m_maxLevel != value) {
m_maxLevel = value;
m_texStateDirty = true;
}
}
void QSSGRenderTextureBase::setMinFilter(QSSGRenderTextureMinifyingOp value)
{
if (m_sampler->minFilter != value) {
m_sampler->minFilter = value;
m_samplerParamsDirty = true;
}
}
void QSSGRenderTextureBase::setMagFilter(QSSGRenderTextureMagnifyingOp value)
{
if (m_sampler->magFilter != value) {
m_sampler->magFilter = value;
m_samplerParamsDirty = true;
}
}
void QSSGRenderTextureBase::setTextureWrapS(QSSGRenderTextureCoordOp value)
{
if (m_sampler->wrapS != value) {
m_sampler->wrapS = value;
m_samplerParamsDirty = true;
}
}
void QSSGRenderTextureBase::setTextureWrapT(QSSGRenderTextureCoordOp value)
{
if (m_sampler->wrapT != value) {
m_sampler->wrapT = value;
m_samplerParamsDirty = true;
}
}
void QSSGRenderTextureBase::setTextureCompareMode(QSSGRenderTextureCompareMode value)
{
if (m_sampler->compareMode != value) {
m_sampler->compareMode = value;
m_samplerParamsDirty = true;
}
}
void QSSGRenderTextureBase::setTextureCompareFunc(QSSGRenderTextureCompareOp value)
{
if (m_sampler->compareOp != value) {
m_sampler->compareOp = value;
m_samplerParamsDirty = true;
}
}
void QSSGRenderTextureBase::applyTexParams()
{
if (m_samplerParamsDirty && m_texTarget != QSSGRenderTextureTargetType::Texture2D_MS) {
m_backend->updateSampler(m_sampler->handle(),
m_texTarget,
m_sampler->minFilter,
m_sampler->magFilter,
m_sampler->wrapS,
m_sampler->wrapT,
m_sampler->wrapR,
m_sampler->minLod,
m_sampler->maxLod,
m_sampler->lodBias,
m_sampler->compareMode,
m_sampler->compareOp);
m_samplerParamsDirty = false;
}
if (m_texStateDirty) {
m_backend->updateTextureObject(m_handle, m_texTarget, m_baseLevel, m_maxLevel);
m_texStateDirty = false;
}
}
void QSSGRenderTextureBase::applyTexSwizzle()
{
QSSGRenderTextureSwizzleMode theSwizzleMode = m_backend->getTextureSwizzleMode(m_format);
if (theSwizzleMode != m_sampler->swizzleMode) {
m_sampler->swizzleMode = theSwizzleMode;
m_backend->updateTextureSwizzle(m_handle, m_texTarget, theSwizzleMode);
}
}
QT_END_NAMESPACE
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