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| |
| #include "qsgdepthstencilbuffer_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| QSGDepthStencilBuffer::QSGDepthStencilBuffer(QOpenGLContext *context, const Format &format) |
| : m_functions(context) |
| , m_manager(nullptr) |
| , m_format(format) |
| , m_depthBuffer(0) |
| , m_stencilBuffer(0) |
| { |
| // 'm_manager' is set by QSGDepthStencilBufferManager::insertBuffer(). |
| } |
| |
| QSGDepthStencilBuffer::~QSGDepthStencilBuffer() |
| { |
| if (m_manager) |
| m_manager->m_buffers.remove(m_format); |
| } |
| |
| #ifndef GL_DEPTH_STENCIL_ATTACHMENT |
| #define GL_DEPTH_STENCIL_ATTACHMENT 0x821A |
| #endif |
| |
| void QSGDepthStencilBuffer::attach() |
| { |
| #ifndef Q_OS_WASM |
| m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, |
| GL_RENDERBUFFER, m_depthBuffer); |
| m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, |
| GL_RENDERBUFFER, m_stencilBuffer); |
| #else |
| m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, |
| GL_RENDERBUFFER, m_stencilBuffer); |
| #endif |
| } |
| |
| void QSGDepthStencilBuffer::detach() |
| { |
| #ifndef Q_OS_WASM |
| m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, |
| GL_RENDERBUFFER, 0); |
| m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, |
| GL_RENDERBUFFER, 0); |
| #else |
| m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, |
| GL_RENDERBUFFER, 0); |
| #endif |
| } |
| |
| #ifndef GL_DEPTH24_STENCIL8_OES |
| #define GL_DEPTH24_STENCIL8_OES 0x88F0 |
| #endif |
| |
| #ifndef GL_DEPTH_COMPONENT24_OES |
| #define GL_DEPTH_COMPONENT24_OES 0x81A6 |
| #endif |
| |
| #ifndef GL_DEPTH_STENCIL |
| #define GL_DEPTH_STENCIL 0x84F9 |
| #endif |
| |
| QSGDefaultDepthStencilBuffer::QSGDefaultDepthStencilBuffer(QOpenGLContext *context, const Format &format) |
| : QSGDepthStencilBuffer(context, format) |
| { |
| const GLsizei width = format.size.width(); |
| const GLsizei height = format.size.height(); |
| |
| #ifndef Q_OS_WASM |
| if (format.attachments == (DepthAttachment | StencilAttachment) |
| && m_functions.hasOpenGLExtension(QOpenGLExtensions::PackedDepthStencil)) |
| { |
| m_functions.glGenRenderbuffers(1, &m_depthBuffer); |
| m_functions.glBindRenderbuffer(GL_RENDERBUFFER, m_depthBuffer); |
| if (format.samples && m_functions.hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)) { |
| #if defined(QT_OPENGL_ES_2) |
| m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, format.samples, |
| GL_DEPTH24_STENCIL8_OES, width, height); |
| #else |
| m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, format.samples, |
| GL_DEPTH24_STENCIL8, width, height); |
| #endif |
| } else { |
| #if defined(QT_OPENGL_ES_2) |
| m_functions.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, width, height); |
| #else |
| m_functions.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height); |
| #endif |
| } |
| m_stencilBuffer = m_depthBuffer; |
| } |
| if (!m_depthBuffer && (format.attachments & DepthAttachment)) { |
| m_functions.glGenRenderbuffers(1, &m_depthBuffer); |
| m_functions.glBindRenderbuffer(GL_RENDERBUFFER, m_depthBuffer); |
| GLenum internalFormat = GL_DEPTH_COMPONENT; |
| if (context->isOpenGLES()) |
| internalFormat = m_functions.hasOpenGLExtension(QOpenGLExtensions::Depth24) |
| ? GL_DEPTH_COMPONENT24_OES : GL_DEPTH_COMPONENT16; |
| if (format.samples && m_functions.hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)) { |
| m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, format.samples, |
| internalFormat, width, height); |
| } else { |
| m_functions.glRenderbufferStorage(GL_RENDERBUFFER, internalFormat, width, height); |
| } |
| } |
| if (!m_stencilBuffer && (format.attachments & StencilAttachment)) { |
| m_functions.glGenRenderbuffers(1, &m_stencilBuffer); |
| m_functions.glBindRenderbuffer(GL_RENDERBUFFER, m_stencilBuffer); |
| #ifdef QT_OPENGL_ES |
| const GLenum internalFormat = GL_STENCIL_INDEX8; |
| #else |
| const GLenum internalFormat = context->isOpenGLES() ? GL_STENCIL_INDEX8 : GL_STENCIL_INDEX; |
| #endif |
| if (format.samples && m_functions.hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)) { |
| m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, format.samples, |
| internalFormat, width, height); |
| } else { |
| m_functions.glRenderbufferStorage(GL_RENDERBUFFER, internalFormat, width, height); |
| } |
| } |
| #else |
| m_functions.glGenRenderbuffers(1, &m_depthBuffer); |
| m_functions.glBindRenderbuffer(GL_RENDERBUFFER, m_depthBuffer); |
| m_functions.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_STENCIL, width, height); |
| m_stencilBuffer = m_depthBuffer; |
| #endif |
| } |
| |
| QSGDefaultDepthStencilBuffer::~QSGDefaultDepthStencilBuffer() |
| { |
| free(); |
| } |
| |
| void QSGDefaultDepthStencilBuffer::free() |
| { |
| if (m_depthBuffer) |
| m_functions.glDeleteRenderbuffers(1, &m_depthBuffer); |
| if (m_stencilBuffer && m_stencilBuffer != m_depthBuffer) |
| m_functions.glDeleteRenderbuffers(1, &m_stencilBuffer); |
| m_depthBuffer = m_stencilBuffer = 0; |
| } |
| |
| |
| QSGDepthStencilBufferManager::~QSGDepthStencilBufferManager() |
| { |
| for (Hash::const_iterator it = m_buffers.constBegin(), cend = m_buffers.constEnd(); it != cend; ++it) { |
| QSharedPointer<QSGDepthStencilBuffer> buffer = it.value().toStrongRef(); |
| Q_ASSERT_X(buffer, "~QSGDepthStencilBufferManager", |
| "~QSGDepthStencilBuffer is supposed to unregister from the manager"); |
| buffer->free(); |
| buffer->m_manager = nullptr; |
| } |
| } |
| |
| QSharedPointer<QSGDepthStencilBuffer> QSGDepthStencilBufferManager::bufferForFormat(const QSGDepthStencilBuffer::Format &fmt) |
| { |
| Hash::const_iterator it = m_buffers.constFind(fmt); |
| if (it != m_buffers.constEnd()) |
| return it.value().toStrongRef(); |
| return QSharedPointer<QSGDepthStencilBuffer>(); |
| } |
| |
| void QSGDepthStencilBufferManager::insertBuffer(const QSharedPointer<QSGDepthStencilBuffer> &buffer) |
| { |
| Q_ASSERT(buffer->m_manager == nullptr); |
| Q_ASSERT(!m_buffers.contains(buffer->m_format)); |
| buffer->m_manager = this; |
| m_buffers.insert(buffer->m_format, buffer.toWeakRef()); |
| } |
| |
| uint qHash(const QSGDepthStencilBuffer::Format &format) |
| { |
| return qHash(qMakePair(format.size.width(), format.size.height())) |
| ^ (uint(format.samples) << 12) ^ (uint(format.attachments) << 28); |
| } |
| |
| QT_END_NAMESPACE |