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Diffstat (limited to 'examples/widgets/graphicsview/boxes/glbuffers.h')
| -rw-r--r-- | examples/widgets/graphicsview/boxes/glbuffers.h | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/examples/widgets/graphicsview/boxes/glbuffers.h b/examples/widgets/graphicsview/boxes/glbuffers.h deleted file mode 100644 index 4318e8ac24..0000000000 --- a/examples/widgets/graphicsview/boxes/glbuffers.h +++ /dev/null @@ -1,372 +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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef GLBUFFERS_H -#define GLBUFFERS_H - -//#include <GL/glew.h> -#include "glextensions.h" - -#include <QtWidgets> -#include <QtOpenGL> - -#define BUFFER_OFFSET(i) ((char*)0 + (i)) -#define SIZE_OF_MEMBER(cls, member) sizeof(static_cast<cls *>(nullptr)->member) - -#define GLBUFFERS_ASSERT_OPENGL(prefix, assertion, returnStatement) \ -if (m_failed || !(assertion)) { \ - if (!m_failed) qCritical(prefix ": The necessary OpenGL functions are not available."); \ - m_failed = true; \ - returnStatement; \ -} - -void qgluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar); - -QT_BEGIN_NAMESPACE -class QMatrix4x4; -QT_END_NAMESPACE - -class GLTexture -{ -public: - GLTexture(); - virtual ~GLTexture(); - virtual void bind() = 0; - virtual void unbind() = 0; - virtual bool failed() const {return m_failed;} -protected: - GLuint m_texture = 0; - bool m_failed = false; -}; - -class GLFrameBufferObject -{ -public: - friend class GLRenderTargetCube; - // friend class GLRenderTarget2D; - - GLFrameBufferObject(int width, int height); - virtual ~GLFrameBufferObject(); - bool isComplete(); - virtual bool failed() const {return m_failed;} -protected: - void setAsRenderTarget(bool state = true); - GLuint m_fbo = 0; - GLuint m_depthBuffer = 0; - int m_width, m_height; - bool m_failed = false; -}; - -class GLTexture2D : public GLTexture -{ -public: - GLTexture2D(int width, int height); - explicit GLTexture2D(const QString &fileName, int width = 0, int height = 0); - void load(int width, int height, QRgb *data); - void bind() override; - void unbind() override; -}; - -class GLTexture3D : public GLTexture -{ -public: - GLTexture3D(int width, int height, int depth); - // TODO: Implement function below - //GLTexture3D(const QString& fileName, int width = 0, int height = 0); - void load(int width, int height, int depth, QRgb *data); - void bind() override; - void unbind() override; -}; - -class GLTextureCube : public GLTexture -{ -public: - GLTextureCube(int size); - explicit GLTextureCube(const QStringList &fileNames, int size = 0); - void load(int size, int face, QRgb *data); - void bind() override; - void unbind() override; -}; - -// TODO: Define and implement class below -//class GLRenderTarget2D : public GLTexture2D - -class GLRenderTargetCube : public GLTextureCube -{ -public: - GLRenderTargetCube(int size); - // begin rendering to one of the cube's faces. 0 <= face < 6 - void begin(int face); - // end rendering - void end(); - bool failed() const override { return m_failed || m_fbo.failed(); } - - static void getViewMatrix(QMatrix4x4& mat, int face); - static void getProjectionMatrix(QMatrix4x4& mat, float nearZ, float farZ); -private: - GLFrameBufferObject m_fbo; -}; - -struct VertexDescription -{ - enum - { - Null = 0, // Terminates a VertexDescription array - Position, - TexCoord, - Normal, - Color, - }; - int field; // Position, TexCoord, Normal, Color - int type; // GL_FLOAT, GL_UNSIGNED_BYTE - int count; // number of elements - int offset; // field's offset into vertex struct - int index; // 0 (unused at the moment) -}; - -// Implementation of interleaved buffers. -// 'T' is a struct which must include a null-terminated static array -// 'VertexDescription* description'. -// Example: -/* -struct Vertex -{ - GLfloat position[3]; - GLfloat texCoord[2]; - GLfloat normal[3]; - GLbyte color[4]; - static VertexDescription description[]; -}; - -VertexDescription Vertex::description[] = { - {VertexDescription::Position, GL_FLOAT, SIZE_OF_MEMBER(Vertex, position) / sizeof(GLfloat), offsetof(Vertex, position), 0}, - {VertexDescription::TexCoord, GL_FLOAT, SIZE_OF_MEMBER(Vertex, texCoord) / sizeof(GLfloat), offsetof(Vertex, texCoord), 0}, - {VertexDescription::Normal, GL_FLOAT, SIZE_OF_MEMBER(Vertex, normal) / sizeof(GLfloat), offsetof(Vertex, normal), 0}, - {VertexDescription::Color, GL_BYTE, SIZE_OF_MEMBER(Vertex, color) / sizeof(GLbyte), offsetof(Vertex, color), 0}, - {VertexDescription::Null, 0, 0, 0, 0}, -}; -*/ -template<class T> -class GLVertexBuffer -{ -public: - GLVertexBuffer(int length, const T *data = nullptr, int mode = GL_STATIC_DRAW) - { - GLBUFFERS_ASSERT_OPENGL("GLVertexBuffer::GLVertexBuffer", glGenBuffers && glBindBuffer && glBufferData, return) - - glGenBuffers(1, &m_buffer); - glBindBuffer(GL_ARRAY_BUFFER, m_buffer); - glBufferData(GL_ARRAY_BUFFER, (m_length = length) * sizeof(T), data, mode); - } - - ~GLVertexBuffer() - { - GLBUFFERS_ASSERT_OPENGL("GLVertexBuffer::~GLVertexBuffer", glDeleteBuffers, return) - - glDeleteBuffers(1, &m_buffer); - } - - void bind() - { - GLBUFFERS_ASSERT_OPENGL("GLVertexBuffer::bind", glBindBuffer, return) - - glBindBuffer(GL_ARRAY_BUFFER, m_buffer); - for (VertexDescription *desc = T::description; desc->field != VertexDescription::Null; ++desc) { - switch (desc->field) { - case VertexDescription::Position: - glVertexPointer(desc->count, desc->type, sizeof(T), BUFFER_OFFSET(desc->offset)); - glEnableClientState(GL_VERTEX_ARRAY); - break; - case VertexDescription::TexCoord: - glTexCoordPointer(desc->count, desc->type, sizeof(T), BUFFER_OFFSET(desc->offset)); - glEnableClientState(GL_TEXTURE_COORD_ARRAY); - break; - case VertexDescription::Normal: - glNormalPointer(desc->type, sizeof(T), BUFFER_OFFSET(desc->offset)); - glEnableClientState(GL_NORMAL_ARRAY); - break; - case VertexDescription::Color: - glColorPointer(desc->count, desc->type, sizeof(T), BUFFER_OFFSET(desc->offset)); - glEnableClientState(GL_COLOR_ARRAY); - break; - default: - break; - } - } - } - - void unbind() - { - GLBUFFERS_ASSERT_OPENGL("GLVertexBuffer::unbind", glBindBuffer, return) - - glBindBuffer(GL_ARRAY_BUFFER, 0); - for (VertexDescription *desc = T::description; desc->field != VertexDescription::Null; ++desc) { - switch (desc->field) { - case VertexDescription::Position: - glDisableClientState(GL_VERTEX_ARRAY); - break; - case VertexDescription::TexCoord: - glDisableClientState(GL_TEXTURE_COORD_ARRAY); - break; - case VertexDescription::Normal: - glDisableClientState(GL_NORMAL_ARRAY); - break; - case VertexDescription::Color: - glDisableClientState(GL_COLOR_ARRAY); - break; - default: - break; - } - } - } - - int length() const {return m_length;} - - T *lock() - { - GLBUFFERS_ASSERT_OPENGL("GLVertexBuffer::lock", glBindBuffer && glMapBuffer, return nullptr) - - glBindBuffer(GL_ARRAY_BUFFER, m_buffer); - //glBufferData(GL_ARRAY_BUFFER, m_length, NULL, m_mode); - GLvoid* buffer = glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE); - m_failed = (buffer == nullptr); - return reinterpret_cast<T *>(buffer); - } - - void unlock() - { - GLBUFFERS_ASSERT_OPENGL("GLVertexBuffer::unlock", glBindBuffer && glUnmapBuffer, return) - - glBindBuffer(GL_ARRAY_BUFFER, m_buffer); - glUnmapBuffer(GL_ARRAY_BUFFER); - } - - bool failed() - { - return m_failed; - } - -private: - int m_length = 0; - int m_mode = 0; - GLuint m_buffer = 0; - bool m_failed = false; -}; - -template<class T> -class GLIndexBuffer -{ -public: - GLIndexBuffer(int length, const T *data = nullptr, int mode = GL_STATIC_DRAW) - : m_length(0) - , m_mode(mode) - , m_buffer(0) - , m_failed(false) - { - GLBUFFERS_ASSERT_OPENGL("GLIndexBuffer::GLIndexBuffer", glGenBuffers && glBindBuffer && glBufferData, return) - - glGenBuffers(1, &m_buffer); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, (m_length = length) * sizeof(T), data, mode); - } - - ~GLIndexBuffer() - { - GLBUFFERS_ASSERT_OPENGL("GLIndexBuffer::~GLIndexBuffer", glDeleteBuffers, return) - - glDeleteBuffers(1, &m_buffer); - } - - void bind() - { - GLBUFFERS_ASSERT_OPENGL("GLIndexBuffer::bind", glBindBuffer, return) - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer); - } - - void unbind() - { - GLBUFFERS_ASSERT_OPENGL("GLIndexBuffer::unbind", glBindBuffer, return) - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - } - - int length() const {return m_length;} - - T *lock() - { - GLBUFFERS_ASSERT_OPENGL("GLIndexBuffer::lock", glBindBuffer && glMapBuffer, return nullptr) - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer); - GLvoid* buffer = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_READ_WRITE); - m_failed = (buffer == nullptr); - return reinterpret_cast<T *>(buffer); - } - - void unlock() - { - GLBUFFERS_ASSERT_OPENGL("GLIndexBuffer::unlock", glBindBuffer && glUnmapBuffer, return) - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer); - glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); - } - - bool failed() - { - return m_failed; - } - -private: - int m_length, m_mode; - GLuint m_buffer; - bool m_failed; -}; - -#endif |