123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118 | // 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#ifndef QOPENGLFRAMEBUFFEROBJECT_P_H#define QOPENGLFRAMEBUFFEROBJECT_P_H//// W A R N I N G// -------------//// This file is not part of the Qt API. It exists purely as an// implementation detail. This header file may change from version to// version without notice, or even be removed.//// We mean it.//#include <QtCore/qvarlengtharray.h>#include <qopenglframebufferobject.h>#include <private/qopenglcontext_p.h>#include <private/qopenglextensions_p.h> QT_BEGIN_NAMESPACE class QOpenGLFramebufferObjectFormatPrivate {public:QOpenGLFramebufferObjectFormatPrivate():ref(1),samples(0),attachment(QOpenGLFramebufferObject::NoAttachment),target(GL_TEXTURE_2D),mipmap(false){#if !QT_CONFIG(opengles2)// There is nothing that says QOpenGLFramebufferObjectFormat needs a current// context, so we need a fallback just to be safe, even though in practice there// will usually be a current context. QOpenGLContext *ctx =QOpenGLContext::currentContext();const bool isES = ctx ? ctx->isOpenGLES() :QOpenGLContext::openGLModuleType() !=QOpenGLContext::LibGL; internal_format = isES ? GL_RGBA : GL_RGBA8;#else internal_format = GL_RGBA;#endif} QOpenGLFramebufferObjectFormatPrivate (const QOpenGLFramebufferObjectFormatPrivate *other):ref(1),samples(other->samples),attachment(other->attachment),target(other->target),internal_format(other->internal_format),mipmap(other->mipmap){}boolequals(const QOpenGLFramebufferObjectFormatPrivate *other){return samples == other->samples && attachment == other->attachment && target == other->target && internal_format == other->internal_format && mipmap == other->mipmap;} QAtomicInt ref;int samples;QOpenGLFramebufferObject::Attachment attachment; GLenum target; GLenum internal_format; uint mipmap :1;};class QOpenGLFramebufferObjectPrivate {public:QOpenGLFramebufferObjectPrivate() :fbo_guard(nullptr),depth_buffer_guard(nullptr),stencil_buffer_guard(nullptr),valid(false) {}~QOpenGLFramebufferObjectPrivate() {}voidinit(QOpenGLFramebufferObject *q,const QSize &size,QOpenGLFramebufferObject::Attachment attachment, GLenum texture_target, GLenum internal_format, GLint samples =0,bool mipmap =false);voidinitTexture(int idx);voidinitColorBuffer(int idx, GLint *samples);voidinitDepthStencilAttachments(QOpenGLContext *ctx,QOpenGLFramebufferObject::Attachment attachment);boolcheckFramebufferStatus(QOpenGLContext *ctx)const; QOpenGLSharedResourceGuard *fbo_guard; QOpenGLSharedResourceGuard *depth_buffer_guard; QOpenGLSharedResourceGuard *stencil_buffer_guard; GLenum target; QSize dsSize; QOpenGLFramebufferObjectFormat format;int requestedSamples; uint valid :1;QOpenGLFramebufferObject::Attachment fbo_attachment; QOpenGLExtensions funcs;struct ColorAttachment {ColorAttachment() :internalFormat(0),guard(nullptr) { }ColorAttachment(const QSize &size, GLenum internalFormat):size(size),internalFormat(internalFormat),guard(nullptr) { } QSize size; GLenum internalFormat; QOpenGLSharedResourceGuard *guard;}; QVarLengthArray<ColorAttachment,8> colorAttachments;inline GLuint fbo()const{return fbo_guard ? fbo_guard->id() :0; }}; Q_OPENGL_EXPORT QImage qt_gl_read_framebuffer(const QSize &size,bool alpha_format,bool include_alpha); QT_END_NAMESPACE #endif// QOPENGLFRAMEBUFFEROBJECT_P_H
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