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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Copyright (C) 2016 Svenn-Arne Dragly.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D 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 "graphicshelperes3_p.h"
#include <private/attachmentpack_p.h>
#include <QOpenGLExtraFunctions>
QT_BEGIN_NAMESPACE
// ES 3.0+
#ifndef GL_SAMPLER_3D
#define GL_SAMPLER_3D 0x8B5F
#endif
#ifndef GL_SAMPLER_2D_SHADOW
#define GL_SAMPLER_2D_SHADOW 0x8B62
#endif
#ifndef GL_SAMPLER_CUBE_SHADOW
#define GL_SAMPLER_CUBE_SHADOW 0x8DC5
#endif
#ifndef GL_SAMPLER_2D_ARRAY
#define GL_SAMPLER_2D_ARRAY 0x8DC1
#endif
#ifndef GL_SAMPLER_2D_ARRAY_SHADOW
#define GL_SAMPLER_2D_ARRAY_SHADOW 0x8DC4
#endif
namespace Qt3DRender {
namespace Render {
GraphicsHelperES3::GraphicsHelperES3()
{
}
GraphicsHelperES3::~GraphicsHelperES3()
{
}
void GraphicsHelperES3::initializeHelper(QOpenGLContext *context,
QAbstractOpenGLFunctions *functions)
{
GraphicsHelperES2::initializeHelper(context, functions);
m_extraFuncs = context->extraFunctions();
Q_ASSERT(m_extraFuncs);
}
void GraphicsHelperES3::drawElementsInstancedBaseVertexBaseInstance(GLenum primitiveType,
GLsizei primitiveCount,
GLint indexType,
void *indices,
GLsizei instances,
GLint baseVertex,
GLint baseInstance)
{
if (baseInstance != 0)
qWarning() << "glDrawElementsInstancedBaseVertexBaseInstance is not supported with OpenGL ES 3";
if (baseVertex != 0)
qWarning() << "glDrawElementsInstancedBaseVertex is not supported with OpenGL ES 3";
m_extraFuncs->glDrawElementsInstanced(primitiveType,
primitiveCount,
indexType,
indices,
instances);
}
void GraphicsHelperES3::vertexAttribDivisor(GLuint index, GLuint divisor)
{
m_extraFuncs->glVertexAttribDivisor(index, divisor);
}
void GraphicsHelperES3::bindFrameBufferAttachment(QOpenGLTexture *texture, const Attachment &attachment)
{
GLenum attr = GL_COLOR_ATTACHMENT0;
if (attachment.m_point <= QRenderTargetOutput::Color15)
attr = GL_COLOR_ATTACHMENT0 + attachment.m_point;
else if (attachment.m_point == QRenderTargetOutput::Depth)
attr = GL_DEPTH_ATTACHMENT;
else if (attachment.m_point == QRenderTargetOutput::Stencil)
attr = GL_STENCIL_ATTACHMENT;
else
qCritical() << "Unsupported FBO attachment OpenGL ES 3.0";
texture->bind();
QOpenGLTexture::Target target = texture->target();
if (target == QOpenGLTexture::Target2D)
m_funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, attr, target, texture->textureId(), attachment.m_mipLevel);
else if (target == QOpenGLTexture::TargetCubeMap)
m_funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, attr, attachment.m_face, texture->textureId(), attachment.m_mipLevel);
else
qCritical() << "Unsupported Texture FBO attachment format";
texture->release();
}
bool GraphicsHelperES3::supportsFeature(GraphicsHelperInterface::Feature feature) const
{
switch (feature) {
case RenderBufferDimensionRetrieval:
case MRT:
return true;
default:
return false;
}
}
void GraphicsHelperES3::drawBuffers(GLsizei n, const int *bufs)
{
QVarLengthArray<GLenum, 16> drawBufs(n);
for (int i = 0; i < n; i++)
drawBufs[i] = GL_COLOR_ATTACHMENT0 + bufs[i];
m_extraFuncs->glDrawBuffers(n, drawBufs.constData());
}
void GraphicsHelperES3::bindUniform(const QVariant &v, const ShaderUniform &description)
{
switch (description.m_type) {
case GL_SAMPLER_3D:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_CUBE_SHADOW:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_2D_ARRAY_SHADOW:
Q_ASSERT(description.m_size == 1);
m_funcs->glUniform1i(description.m_location, v.toInt());
break;
default:
GraphicsHelperES2::bindUniform(v, description);
break;
}
}
} // namespace Render
} // namespace Qt3DRender
QT_END_NAMESPACE
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