void OGLESRenderView::DoDiscardDepthStencil()
{
if (glloader_GLES_EXT_discard_framebuffer())
{
GLenum attachments[2];
if (fbo_ != 0)
{
attachments[0] = GL_DEPTH_ATTACHMENT;
attachments[1] = GL_STENCIL_ATTACHMENT;
}
else
{
attachments[0] = GL_DEPTH_EXT;
attachments[1] = GL_STENCIL_EXT;
}
OGLESRenderEngine& re = *checked_cast<OGLESRenderEngine*>(&Context::Instance().RenderFactoryInstance().RenderEngineInstance());
GLuint old_fbo = re.BindFramebuffer();
re.BindFramebuffer(fbo_);
glDiscardFramebufferEXT(GL_FRAMEBUFFER, 2, attachments);
re.BindFramebuffer(old_fbo);
}
else
{
this->ClearDepthStencil(1, 0);
}
}
void OGLESRenderView::DoDiscardColor()
{
if (glloader_GLES_EXT_discard_framebuffer())
{
GLenum attachment;
if (fbo_ != 0)
{
attachment = GL_COLOR_ATTACHMENT0 + index_;
}
else
{
attachment = GL_COLOR_EXT;
}
OGLESRenderEngine& re = *checked_cast<OGLESRenderEngine*>(&Context::Instance().RenderFactoryInstance().RenderEngineInstance());
GLuint old_fbo = re.BindFramebuffer();
re.BindFramebuffer(fbo_);
glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, &attachment);
re.BindFramebuffer(old_fbo);
}
else
{
this->ClearColor(Color(0, 0, 0, 0));
}
}
void OGLESFrameBuffer::Discard(uint32_t flags)
{
if (glloader_GLES_VERSION_3_0() || glloader_GLES_EXT_discard_framebuffer())
{
std::vector<GLenum> attachments;
if (fbo_ != 0)
{
if (flags & CBM_Color)
{
for (size_t i = 0; i < clr_views_.size(); ++ i)
{
if (clr_views_[i])
{
attachments.push_back(static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + i));
}
}
}
if (flags & CBM_Depth)
{
if (rs_view_)
{
attachments.push_back(GL_DEPTH_ATTACHMENT);
}
}
if (flags & CBM_Stencil)
{
if (rs_view_)
{
attachments.push_back(GL_STENCIL_ATTACHMENT);
}
}
}
else
{
if (flags & CBM_Color)
{
attachments.push_back(GL_COLOR);
}
if (flags & CBM_Depth)
{
attachments.push_back(GL_DEPTH);
}
if (flags & CBM_Stencil)
{
attachments.push_back(GL_STENCIL);
}
}
OGLESRenderEngine& re = *checked_cast<OGLESRenderEngine*>(&Context::Instance().RenderFactoryInstance().RenderEngineInstance());
GLuint old_fbo = re.BindFramebuffer();
re.BindFramebuffer(fbo_);
if (glloader_GLES_VERSION_3_0())
{
glInvalidateFramebuffer(GL_FRAMEBUFFER, static_cast<GLsizei>(attachments.size()), &attachments[0]);
}
else
{
glDiscardFramebufferEXT(GL_FRAMEBUFFER, static_cast<GLsizei>(attachments.size()), &attachments[0]);
}
re.BindFramebuffer(old_fbo);
}
else
{
this->Clear(flags, Color(0, 0, 0, 0), 1, 0);
}
}
