diff options
Diffstat (limited to 'src/gui/opengl/qopenglframebufferobject.cpp')
| -rw-r--r-- | src/gui/opengl/qopenglframebufferobject.cpp | 86 |
1 files changed, 80 insertions, 6 deletions
diff --git a/src/gui/opengl/qopenglframebufferobject.cpp b/src/gui/opengl/qopenglframebufferobject.cpp index 83bc568ba7..cae3d516c4 100644 --- a/src/gui/opengl/qopenglframebufferobject.cpp +++ b/src/gui/opengl/qopenglframebufferobject.cpp @@ -110,6 +110,10 @@ QT_BEGIN_NAMESPACE #define GL_RGB10 0x8052 #endif +#ifndef GL_RGB16 +#define GL_RGB16 0x8054 +#endif + #ifndef GL_RGBA8 #define GL_RGBA8 0x8058 #endif @@ -118,6 +122,10 @@ QT_BEGIN_NAMESPACE #define GL_RGB10_A2 0x8059 #endif +#ifndef GL_RGBA16 +#define GL_RGBA16 0x805B +#endif + #ifndef GL_BGRA #define GL_BGRA 0x80E1 #endif @@ -134,6 +142,15 @@ QT_BEGIN_NAMESPACE #define GL_CONTEXT_LOST 0x0507 #endif +#ifndef GL_DEPTH_STENCIL_ATTACHMENT +#define GL_DEPTH_STENCIL_ATTACHMENT 0x821A +#endif + +#ifndef GL_DEPTH_STENCIL +#define GL_DEPTH_STENCIL 0x84F9 +#endif + + /*! \class QOpenGLFramebufferObjectFormat @@ -530,6 +547,8 @@ void QOpenGLFramebufferObjectPrivate::initTexture(int idx) GLuint pixelType = GL_UNSIGNED_BYTE; if (color.internalFormat == GL_RGB10_A2 || color.internalFormat == GL_RGB10) pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; + else if (color.internalFormat == GL_RGB16 || color.internalFormat == GL_RGBA16) + pixelType = GL_UNSIGNED_SHORT; funcs.glTexImage2D(target, 0, color.internalFormat, color.size.width(), color.size.height(), 0, GL_RGBA, pixelType, NULL); @@ -567,11 +586,16 @@ void QOpenGLFramebufferObjectPrivate::initColorBuffer(int idx, GLint *samples) GLenum storageFormat = color.internalFormat; // ES requires a sized format. The older desktop extension does not. Correct the format on ES. - if (ctx->isOpenGLES() && color.internalFormat == GL_RGBA) { - if (funcs.hasOpenGLExtension(QOpenGLExtensions::Sized8Formats)) - storageFormat = GL_RGBA8; - else - storageFormat = GL_RGBA4; + if (ctx->isOpenGLES()) { + if (color.internalFormat == GL_RGBA) { + if (funcs.hasOpenGLExtension(QOpenGLExtensions::Sized8Formats)) + storageFormat = GL_RGBA8; + else + storageFormat = GL_RGBA4; + } else if (color.internalFormat == GL_RGB10) { + // GL_RGB10 is not allowed in ES for glRenderbufferStorage. + storageFormat = GL_RGB10_A2; + } } funcs.glGenRenderbuffers(1, &color_buffer); @@ -603,7 +627,11 @@ void QOpenGLFramebufferObjectPrivate::initDepthStencilAttachments(QOpenGLContext // free existing attachments if (depth_buffer_guard) { +#ifdef Q_OS_WASM + funcs.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0); +#else funcs.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0); +#endif depth_buffer_guard->free(); } if (stencil_buffer_guard) { @@ -621,7 +649,35 @@ void QOpenGLFramebufferObjectPrivate::initDepthStencilAttachments(QOpenGLContext // In practice, a combined depth-stencil buffer is supported by all desktop platforms, while a // separate stencil buffer is not. On embedded devices however, a combined depth-stencil buffer // might not be supported while separate buffers are, according to QTBUG-12861. +#ifdef Q_OS_WASM + // WebGL doesn't allow separately attach buffers to + // STENCIL_ATTACHMENT and DEPTH_ATTACHMENT + // QTBUG-69913 + if (attachment == QOpenGLFramebufferObject::CombinedDepthStencil) { + funcs.glGenRenderbuffers(1, &depth_buffer); + funcs.glBindRenderbuffer(GL_RENDERBUFFER, depth_buffer); + Q_ASSERT(funcs.glIsRenderbuffer(depth_buffer)); + GLenum storageFormat = GL_DEPTH_STENCIL; + + if (samples != 0 ) { + funcs.glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, + storageFormat, dsSize.width(), dsSize.height()); + } else { + funcs.glRenderbufferStorage(GL_RENDERBUFFER, storageFormat, + dsSize.width(), dsSize.height()); + } + + funcs.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, + GL_RENDERBUFFER, depth_buffer); + + valid = checkFramebufferStatus(ctx); + if (!valid) { + funcs.glDeleteRenderbuffers(1, &depth_buffer); + depth_buffer = 0; + } + } +#else if (attachment == QOpenGLFramebufferObject::CombinedDepthStencil && funcs.hasOpenGLExtension(QOpenGLExtensions::PackedDepthStencil)) { @@ -713,11 +769,16 @@ void QOpenGLFramebufferObjectPrivate::initDepthStencilAttachments(QOpenGLContext stencil_buffer = 0; } } +#endif //Q_OS_WASM // The FBO might have become valid after removing the depth or stencil buffer. valid = checkFramebufferStatus(ctx); +#ifdef Q_OS_WASM + if (depth_buffer) { +#else if (depth_buffer && stencil_buffer) { +#endif fbo_attachment = QOpenGLFramebufferObject::CombinedDepthStencil; } else if (depth_buffer) { fbo_attachment = QOpenGLFramebufferObject::Depth; @@ -1307,6 +1368,14 @@ static inline QImage qt_gl_read_framebuffer_rgb10a2(const QSize &size, bool incl return img; } +static inline QImage qt_gl_read_framebuffer_rgba16(const QSize &size, bool include_alpha, QOpenGLContext *context) +{ + // We assume OpenGL 1.2+ or ES 3.0+ here. + QImage img(size, include_alpha ? QImage::Format_RGBA64_Premultiplied : QImage::Format_RGBX64); + context->functions()->glReadPixels(0, 0, size.width(), size.height(), GL_RGBA, GL_UNSIGNED_SHORT, img.bits()); + return img; +} + static QImage qt_gl_read_framebuffer(const QSize &size, GLenum internal_format, bool include_alpha, bool flip) { QOpenGLContext *ctx = QOpenGLContext::currentContext(); @@ -1324,6 +1393,10 @@ static QImage qt_gl_read_framebuffer(const QSize &size, GLenum internal_format, return qt_gl_read_framebuffer_rgb10a2(size, false, ctx).mirrored(false, flip); case GL_RGB10_A2: return qt_gl_read_framebuffer_rgb10a2(size, include_alpha, ctx).mirrored(false, flip); + case GL_RGB16: + return qt_gl_read_framebuffer_rgba16(size, false, ctx).mirrored(false, flip); + case GL_RGBA16: + return qt_gl_read_framebuffer_rgba16(size, include_alpha, ctx).mirrored(false, flip); case GL_RGBA: case GL_RGBA8: default: @@ -1352,7 +1425,8 @@ Q_GUI_EXPORT QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, is used only when internalTextureFormat() is set to \c GL_RGB. Since Qt 5.2 the function will fall back to premultiplied RGBA8888 or RGBx8888 when reading to (A)RGB32 is not supported, and this includes OpenGL ES. Since Qt - 5.4 an A2BGR30 image is returned if the internal format is RGB10_A2. + 5.4 an A2BGR30 image is returned if the internal format is RGB10_A2, and since + Qt 5.12 a RGBA64 image is return if the internal format is RGBA16. If the rendering in the framebuffer was not done with premultiplied alpha in mind, create a wrapper QImage with a non-premultiplied format. This is necessary before |