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improved the handling of iOS UIView resize / rotate by recreating the frame-buffer and render-buffer objects

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This commit is contained in:
Ka Ming Chan 2015-07-21 20:37:59 +08:00
parent d168bd88f6
commit 20a27012a0
2 changed files with 51 additions and 0 deletions
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7
examples/common/entry/entry_ios.mm
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@ -169,6 +169,13 @@ using namespace entry;
return self;
}
- (void)layoutSubviews
{
uint32_t frameW = (uint32_t)(self.contentScaleFactor * self.frame.size.width);
uint32_t frameH = (uint32_t)(self.contentScaleFactor * self.frame.size.height);
s_ctx->m_eventQueue.postSizeEvent(s_defaultWindow, frameW, frameH);
}
- (void)start
{
if (nil == m_displayLink)

44
src/glcontext_eagl.mm
View file

@ -98,6 +98,50 @@ namespace bgfx { namespace gl
{
BX_UNUSED(_width, _height, _flags);
BX_TRACE("resize context");
if (0 != m_fbo)
{
GL_CHECK(glDeleteFramebuffers(1, &m_fbo) );
m_fbo = 0;
}
if (0 != m_colorRbo)
{
GL_CHECK(glDeleteRenderbuffers(1, &m_colorRbo) );
m_colorRbo = 0;
}
if (0 != m_depthStencilRbo)
{
GL_CHECK(glDeleteRenderbuffers(1, &m_depthStencilRbo) );
m_depthStencilRbo = 0;
}
GL_CHECK(glGenFramebuffers(1, &m_fbo) );
GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo) );
GL_CHECK(glGenRenderbuffers(1, &m_colorRbo) );
GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_colorRbo) );
[((EAGLContext*)m_context) renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)g_platformData.nwh];
GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_colorRbo) );
GLint width;
GLint height;
GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width) );
GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height) );
BX_TRACE("Screen size: %d x %d", width, height);
GL_CHECK(glGenRenderbuffers(1, &m_depthStencilRbo) );
GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_depthStencilRbo) );
GL_CHECK(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, width, height) ); // from OES_packed_depth_stencil
GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
BX_CHECK(GL_FRAMEBUFFER_COMPLETE == glCheckFramebufferStatus(GL_FRAMEBUFFER)
, "glCheckFramebufferStatus failed 0x%08x"
, glCheckFramebufferStatus(GL_FRAMEBUFFER)
);
}
bool GlContext::isSwapChainSupported()