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39 | |
40 | #include "qsgdepthstencilbuffer_p.h" |
41 | |
42 | QT_BEGIN_NAMESPACE |
43 | |
44 | QSGDepthStencilBuffer::QSGDepthStencilBuffer(QOpenGLContext *context, const Format &format) |
45 | : m_functions(context) |
46 | , m_manager(nullptr) |
47 | , m_format(format) |
48 | , m_depthBuffer(0) |
49 | , m_stencilBuffer(0) |
50 | { |
51 | // 'm_manager' is set by QSGDepthStencilBufferManager::insertBuffer(). |
52 | } |
53 | |
54 | QSGDepthStencilBuffer::~QSGDepthStencilBuffer() |
55 | { |
56 | if (m_manager) |
57 | m_manager->m_buffers.remove(akey: m_format); |
58 | } |
59 | |
60 | #ifndef GL_DEPTH_STENCIL_ATTACHMENT |
61 | #define GL_DEPTH_STENCIL_ATTACHMENT 0x821A |
62 | #endif |
63 | |
64 | void QSGDepthStencilBuffer::attach() |
65 | { |
66 | #ifndef Q_OS_WASM |
67 | m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, |
68 | GL_RENDERBUFFER, renderbuffer: m_depthBuffer); |
69 | m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, |
70 | GL_RENDERBUFFER, renderbuffer: m_stencilBuffer); |
71 | #else |
72 | m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, |
73 | GL_RENDERBUFFER, m_stencilBuffer); |
74 | #endif |
75 | } |
76 | |
77 | void QSGDepthStencilBuffer::detach() |
78 | { |
79 | #ifndef Q_OS_WASM |
80 | m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, |
81 | GL_RENDERBUFFER, renderbuffer: 0); |
82 | m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, |
83 | GL_RENDERBUFFER, renderbuffer: 0); |
84 | #else |
85 | m_functions.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, |
86 | GL_RENDERBUFFER, 0); |
87 | #endif |
88 | } |
89 | |
90 | #ifndef GL_DEPTH24_STENCIL8_OES |
91 | #define GL_DEPTH24_STENCIL8_OES 0x88F0 |
92 | #endif |
93 | |
94 | #ifndef GL_DEPTH_COMPONENT24_OES |
95 | #define GL_DEPTH_COMPONENT24_OES 0x81A6 |
96 | #endif |
97 | |
98 | #ifndef GL_DEPTH_STENCIL |
99 | #define GL_DEPTH_STENCIL 0x84F9 |
100 | #endif |
101 | |
102 | QSGDefaultDepthStencilBuffer::QSGDefaultDepthStencilBuffer(QOpenGLContext *context, const Format &format) |
103 | : QSGDepthStencilBuffer(context, format) |
104 | { |
105 | const GLsizei width = format.size.width(); |
106 | const GLsizei height = format.size.height(); |
107 | |
108 | #ifndef Q_OS_WASM |
109 | if (format.attachments == (DepthAttachment | StencilAttachment) |
110 | && m_functions.hasOpenGLExtension(extension: QOpenGLExtensions::PackedDepthStencil)) |
111 | { |
112 | m_functions.glGenRenderbuffers(n: 1, renderbuffers: &m_depthBuffer); |
113 | m_functions.glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer: m_depthBuffer); |
114 | if (format.samples && m_functions.hasOpenGLExtension(extension: QOpenGLExtensions::FramebufferMultisample)) { |
115 | #if defined(QT_OPENGL_ES_2) |
116 | m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, format.samples, |
117 | GL_DEPTH24_STENCIL8_OES, width, height); |
118 | #else |
119 | m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples: format.samples, |
120 | GL_DEPTH24_STENCIL8, width, height); |
121 | #endif |
122 | } else { |
123 | #if defined(QT_OPENGL_ES_2) |
124 | m_functions.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, width, height); |
125 | #else |
126 | m_functions.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height); |
127 | #endif |
128 | } |
129 | m_stencilBuffer = m_depthBuffer; |
130 | } |
131 | if (!m_depthBuffer && (format.attachments & DepthAttachment)) { |
132 | m_functions.glGenRenderbuffers(n: 1, renderbuffers: &m_depthBuffer); |
133 | m_functions.glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer: m_depthBuffer); |
134 | GLenum internalFormat = GL_DEPTH_COMPONENT; |
135 | if (context->isOpenGLES()) |
136 | internalFormat = m_functions.hasOpenGLExtension(extension: QOpenGLExtensions::Depth24) |
137 | ? GL_DEPTH_COMPONENT24_OES : GL_DEPTH_COMPONENT16; |
138 | if (format.samples && m_functions.hasOpenGLExtension(extension: QOpenGLExtensions::FramebufferMultisample)) { |
139 | m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples: format.samples, |
140 | internalformat: internalFormat, width, height); |
141 | } else { |
142 | m_functions.glRenderbufferStorage(GL_RENDERBUFFER, internalformat: internalFormat, width, height); |
143 | } |
144 | } |
145 | if (!m_stencilBuffer && (format.attachments & StencilAttachment)) { |
146 | m_functions.glGenRenderbuffers(n: 1, renderbuffers: &m_stencilBuffer); |
147 | m_functions.glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer: m_stencilBuffer); |
148 | #ifdef QT_OPENGL_ES |
149 | const GLenum internalFormat = GL_STENCIL_INDEX8; |
150 | #else |
151 | const GLenum internalFormat = context->isOpenGLES() ? GL_STENCIL_INDEX8 : GL_STENCIL_INDEX; |
152 | #endif |
153 | if (format.samples && m_functions.hasOpenGLExtension(extension: QOpenGLExtensions::FramebufferMultisample)) { |
154 | m_functions.glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples: format.samples, |
155 | internalformat: internalFormat, width, height); |
156 | } else { |
157 | m_functions.glRenderbufferStorage(GL_RENDERBUFFER, internalformat: internalFormat, width, height); |
158 | } |
159 | } |
160 | #else |
161 | m_functions.glGenRenderbuffers(1, &m_depthBuffer); |
162 | m_functions.glBindRenderbuffer(GL_RENDERBUFFER, m_depthBuffer); |
163 | m_functions.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_STENCIL, width, height); |
164 | m_stencilBuffer = m_depthBuffer; |
165 | #endif |
166 | } |
167 | |
168 | QSGDefaultDepthStencilBuffer::~QSGDefaultDepthStencilBuffer() |
169 | { |
170 | free(); |
171 | } |
172 | |
173 | void QSGDefaultDepthStencilBuffer::free() |
174 | { |
175 | if (m_depthBuffer) |
176 | m_functions.glDeleteRenderbuffers(n: 1, renderbuffers: &m_depthBuffer); |
177 | if (m_stencilBuffer && m_stencilBuffer != m_depthBuffer) |
178 | m_functions.glDeleteRenderbuffers(n: 1, renderbuffers: &m_stencilBuffer); |
179 | m_depthBuffer = m_stencilBuffer = 0; |
180 | } |
181 | |
182 | |
183 | QSGDepthStencilBufferManager::~QSGDepthStencilBufferManager() |
184 | { |
185 | for (Hash::const_iterator it = m_buffers.constBegin(), cend = m_buffers.constEnd(); it != cend; ++it) { |
186 | QSharedPointer<QSGDepthStencilBuffer> buffer = it.value().toStrongRef(); |
187 | Q_ASSERT_X(buffer, "~QSGDepthStencilBufferManager" , |
188 | "~QSGDepthStencilBuffer is supposed to unregister from the manager" ); |
189 | buffer->free(); |
190 | buffer->m_manager = nullptr; |
191 | } |
192 | } |
193 | |
194 | QSharedPointer<QSGDepthStencilBuffer> QSGDepthStencilBufferManager::bufferForFormat(const QSGDepthStencilBuffer::Format &fmt) |
195 | { |
196 | Hash::const_iterator it = m_buffers.constFind(akey: fmt); |
197 | if (it != m_buffers.constEnd()) |
198 | return it.value().toStrongRef(); |
199 | return QSharedPointer<QSGDepthStencilBuffer>(); |
200 | } |
201 | |
202 | void QSGDepthStencilBufferManager::insertBuffer(const QSharedPointer<QSGDepthStencilBuffer> &buffer) |
203 | { |
204 | Q_ASSERT(buffer->m_manager == nullptr); |
205 | Q_ASSERT(!m_buffers.contains(buffer->m_format)); |
206 | buffer->m_manager = this; |
207 | m_buffers.insert(akey: buffer->m_format, avalue: buffer.toWeakRef()); |
208 | } |
209 | |
210 | uint qHash(const QSGDepthStencilBuffer::Format &format) |
211 | { |
212 | return qHash(key: qMakePair(x: format.size.width(), y: format.size.height())) |
213 | ^ (uint(format.samples) << 12) ^ (uint(format.attachments) << 28); |
214 | } |
215 | |
216 | QT_END_NAMESPACE |
217 | |