1 files changed, 0 insertions, 406 deletions
diff --git a/examples/widgets/graphicsview/boxes/glbuffers.cpp b/examples/widgets/graphicsview/boxes/glbuffers.cpp
deleted file mode 100644
index 91de336af3..0000000000
--- a/examples/widgets/graphicsview/boxes/glbuffers.cpp
+++ /dev/null
@@ -1,406 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** 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.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "glbuffers.h"
-
-void qgluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar)
-{
-    const GLdouble ymax = zNear * tan(qDegreesToRadians(fovy) / 2.0);
-    const GLdouble ymin = -ymax;
-    const GLdouble xmin = ymin * aspect;
-    const GLdouble xmax = ymax * aspect;
-    glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
-}
-
-//============================================================================//
-//                                  GLTexture                                 //
-//============================================================================//
-
-GLTexture::GLTexture()
-{
-    glGenTextures(1, &m_texture);
-}
-
-GLTexture::~GLTexture()
-{
-    glDeleteTextures(1, &m_texture);
-}
-
-//============================================================================//
-//                                 GLTexture2D                                //
-//============================================================================//
-
-GLTexture2D::GLTexture2D(int width, int height)
-{
-    glBindTexture(GL_TEXTURE_2D, m_texture);
-    glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0,
-        GL_BGRA, GL_UNSIGNED_BYTE, nullptr);
-
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-    //glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
-    glBindTexture(GL_TEXTURE_2D, 0);
-}
-
-
-GLTexture2D::GLTexture2D(const QString &fileName, int width, int height)
-{
-    // TODO: Add error handling.
-    QImage image(fileName);
-
-    if (image.isNull()) {
-        m_failed = true;
-        return;
-    }
-
-    image = image.convertToFormat(QImage::Format_ARGB32);
-
-    //qDebug() << "Image size:" << image.width() << "x" << image.height();
-    if (width <= 0)
-        width = image.width();
-    if (height <= 0)
-        height = image.height();
-    if (width != image.width() || height != image.height())
-        image = image.scaled(width, height, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
-
-    glBindTexture(GL_TEXTURE_2D, m_texture);
-
-    // Works on x86, so probably works on all little-endian systems.
-    // Does it work on big-endian systems?
-    glTexImage2D(GL_TEXTURE_2D, 0, 4, image.width(), image.height(), 0,
-        GL_BGRA, GL_UNSIGNED_BYTE, image.bits());
-
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-    //glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
-    glBindTexture(GL_TEXTURE_2D, 0);
-}
-
-void GLTexture2D::load(int width, int height, QRgb *data)
-{
-    glBindTexture(GL_TEXTURE_2D, m_texture);
-    glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0,
-        GL_BGRA, GL_UNSIGNED_BYTE, data);
-    glBindTexture(GL_TEXTURE_2D, 0);
-}
-
-void GLTexture2D::bind()
-{
-    glBindTexture(GL_TEXTURE_2D, m_texture);
-    glEnable(GL_TEXTURE_2D);
-}
-
-void GLTexture2D::unbind()
-{
-    glBindTexture(GL_TEXTURE_2D, 0);
-    glDisable(GL_TEXTURE_2D);
-}
-
-
-//============================================================================//
-//                                 GLTexture3D                                //
-//============================================================================//
-
-GLTexture3D::GLTexture3D(int width, int height, int depth)
-{
-    GLBUFFERS_ASSERT_OPENGL("GLTexture3D::GLTexture3D", glTexImage3D, return)
-
-    glBindTexture(GL_TEXTURE_3D, m_texture);
-    glTexImage3D(GL_TEXTURE_3D, 0, 4, width, height, depth, 0,
-        GL_BGRA, GL_UNSIGNED_BYTE, nullptr);
-
-    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    //glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-    //glTexParameteri(GL_TEXTURE_3D, GL_GENERATE_MIPMAP, GL_TRUE);
-    glBindTexture(GL_TEXTURE_3D, 0);
-}
-
-void GLTexture3D::load(int width, int height, int depth, QRgb *data)
-{
-    GLBUFFERS_ASSERT_OPENGL("GLTexture3D::load", glTexImage3D, return)
-
-    glBindTexture(GL_TEXTURE_3D, m_texture);
-    glTexImage3D(GL_TEXTURE_3D, 0, 4, width, height, depth, 0,
-        GL_BGRA, GL_UNSIGNED_BYTE, data);
-    glBindTexture(GL_TEXTURE_3D, 0);
-}
-
-void GLTexture3D::bind()
-{
-    glBindTexture(GL_TEXTURE_3D, m_texture);
-    glEnable(GL_TEXTURE_3D);
-}
-
-void GLTexture3D::unbind()
-{
-    glBindTexture(GL_TEXTURE_3D, 0);
-    glDisable(GL_TEXTURE_3D);
-}
-
-//============================================================================//
-//                                GLTextureCube                               //
-//============================================================================//
-
-GLTextureCube::GLTextureCube(int size)
-{
-    glBindTexture(GL_TEXTURE_CUBE_MAP, m_texture);
-
-    for (int i = 0; i < 6; ++i)
-        glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 4, size, size, 0,
-            GL_BGRA, GL_UNSIGNED_BYTE, nullptr);
-
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    //glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-    //glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_GENERATE_MIPMAP, GL_TRUE);
-    glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-}
-
-GLTextureCube::GLTextureCube(const QStringList &fileNames, int size)
-{
-    // TODO: Add error handling.
-
-    glBindTexture(GL_TEXTURE_CUBE_MAP, m_texture);
-
-    int index = 0;
-    for (const QString &file : fileNames) {
-        QImage image(file);
-        if (image.isNull()) {
-            m_failed = true;
-            break;
-        }
-
-        image = image.convertToFormat(QImage::Format_ARGB32);
-
-        //qDebug() << "Image size:" << image.width() << "x" << image.height();
-        if (size <= 0)
-            size = image.width();
-        if (size != image.width() || size != image.height())
-            image = image.scaled(size, size, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
-
-        // Works on x86, so probably works on all little-endian systems.
-        // Does it work on big-endian systems?
-        glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + index, 0, 4, image.width(), image.height(), 0,
-            GL_BGRA, GL_UNSIGNED_BYTE, image.bits());
-
-        if (++index == 6)
-            break;
-    }
-
-    // Clear remaining faces.
-    while (index < 6) {
-        glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + index, 0, 4, size, size, 0,
-            GL_BGRA, GL_UNSIGNED_BYTE, nullptr);
-        ++index;
-    }
-
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    //glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-    //glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_GENERATE_MIPMAP, GL_TRUE);
-    glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-}
-
-void GLTextureCube::load(int size, int face, QRgb *data)
-{
-    glBindTexture(GL_TEXTURE_CUBE_MAP, m_texture);
-        glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, 0, 4, size, size, 0,
-            GL_BGRA, GL_UNSIGNED_BYTE, data);
-    glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-}
-
-void GLTextureCube::bind()
-{
-    glBindTexture(GL_TEXTURE_CUBE_MAP, m_texture);
-    glEnable(GL_TEXTURE_CUBE_MAP);
-}
-
-void GLTextureCube::unbind()
-{
-    glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-    glDisable(GL_TEXTURE_CUBE_MAP);
-}
-
-//============================================================================//
-//                            GLFrameBufferObject                             //
-//============================================================================//
-
-GLFrameBufferObject::GLFrameBufferObject(int width, int height)
-    : m_width(width)
-    , m_height(height)
-{
-    GLBUFFERS_ASSERT_OPENGL("GLFrameBufferObject::GLFrameBufferObject",
-        glGenFramebuffersEXT && glGenRenderbuffersEXT && glBindRenderbufferEXT && glRenderbufferStorageEXT, return)
-
-    // TODO: share depth buffers of same size
-    glGenFramebuffersEXT(1, &m_fbo);
-    //glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
-    glGenRenderbuffersEXT(1, &m_depthBuffer);
-    glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_depthBuffer);
-    glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, m_width, m_height);
-    //glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_depthBuffer);
-    //glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-}
-
-GLFrameBufferObject::~GLFrameBufferObject()
-{
-    GLBUFFERS_ASSERT_OPENGL("GLFrameBufferObject::~GLFrameBufferObject",
-        glDeleteFramebuffersEXT && glDeleteRenderbuffersEXT, return)
-
-    glDeleteFramebuffersEXT(1, &m_fbo);
-    glDeleteRenderbuffersEXT(1, &m_depthBuffer);
-}
-
-void GLFrameBufferObject::setAsRenderTarget(bool state)
-{
-    GLBUFFERS_ASSERT_OPENGL("GLFrameBufferObject::setAsRenderTarget", glBindFramebufferEXT, return)
-
-    if (state) {
-        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
-        glPushAttrib(GL_VIEWPORT_BIT);
-        glViewport(0, 0, m_width, m_height);
-    } else {
-        glPopAttrib();
-        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-    }
-}
-
-bool GLFrameBufferObject::isComplete()
-{
-    GLBUFFERS_ASSERT_OPENGL("GLFrameBufferObject::isComplete", glCheckFramebufferStatusEXT, return false)
-
-    return GL_FRAMEBUFFER_COMPLETE_EXT == glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-}
-
-//============================================================================//
-//                             GLRenderTargetCube                             //
-//============================================================================//
-
-GLRenderTargetCube::GLRenderTargetCube(int size)
-    : GLTextureCube(size)
-    , m_fbo(size, size)
-{
-}
-
-void GLRenderTargetCube::begin(int face)
-{
-    GLBUFFERS_ASSERT_OPENGL("GLRenderTargetCube::begin",
-        glFramebufferTexture2DEXT && glFramebufferRenderbufferEXT, return)
-
-    m_fbo.setAsRenderTarget(true);
-    glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
-        GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, m_texture, 0);
-    glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_fbo.m_depthBuffer);
-}
-
-void GLRenderTargetCube::end()
-{
-    m_fbo.setAsRenderTarget(false);
-}
-
-void GLRenderTargetCube::getViewMatrix(QMatrix4x4& mat, int face)
-{
-    if (face < 0 || face >= 6) {
-        qWarning("GLRenderTargetCube::getViewMatrix: 'face' must be in the range [0, 6). (face == %d)", face);
-        return;
-    }
-
-    static constexpr int perm[6][3] = {
-        {2, 1, 0},
-        {2, 1, 0},
-        {0, 2, 1},
-        {0, 2, 1},
-        {0, 1, 2},
-        {0, 1, 2},
-    };
-
-    static constexpr float signs[6][3] = {
-        {-1.0f, -1.0f, -1.0f},
-        {+1.0f, -1.0f, +1.0f},
-        {+1.0f, +1.0f, -1.0f},
-        {+1.0f, -1.0f, +1.0f},
-        {+1.0f, -1.0f, -1.0f},
-        {-1.0f, -1.0f, +1.0f},
-    };
-
-    mat.fill(0.0f);
-    for (int i = 0; i < 3; ++i)
-        mat(i, perm[face][i]) = signs[face][i];
-    mat(3, 3) = 1.0f;
-}
-
-void GLRenderTargetCube::getProjectionMatrix(QMatrix4x4& mat, float nearZ, float farZ)
-{
-    static const QMatrix4x4 reference(
-            1.0f, 0.0f, 0.0f, 0.0f,
-            0.0f, 1.0f, 0.0f, 0.0f,
-            0.0f, 0.0f, 0.0f, 0.0f,
-            0.0f, 0.0f, -1.0f, 0.0f);
-
-    mat = reference;
-    mat(2, 2) = (nearZ+farZ)/(nearZ-farZ);
-    mat(2, 3) = 2.0f*nearZ*farZ/(nearZ-farZ);
-}