ZBuffer Issue

[risingforceonline]

I'm trying to render widget on 3d scene, example npc name, but faced issue, that mygui ignore zbuffer at all, position corerct, but text are viewable and ignore any wall/collision, RTTLayer does not help at all also not helped render each texture separate, any advice or solution?

[Altren]

Gui is rendered in screen space and drawn above 3d geometry ignoring its zbuffer.
To render in fair 3d you need to use RTT layer, then create plane in 3d and assign this layer texture to the plane.
Also there is easier approach: you can manually show/hide whole widgets whenever they are supposed to be occluded: check if middle of the widget or npc is visible by doing checking if ray from the camera can "see" place where widget should be

[risingforceonline]

Yeah, i've tried to switch to RTT Layer (take from unit test example), but i faced issue how to rener example widget or textbox to each texture, because on rtt layer we render all objects. I've tried to create for each npc custom texture like
into mygui::widget with textbox inside init like:

auto pTexture = static_cast<MyGUI::DirectXTexture*>(MyGUI::RenderManager::getInstancePtr()->getTexture(this->getPrefixName()));
if (!pTexture)
{
	pTexture = static_cast<MyGUI::DirectXTexture*>(MyGUI::RenderManager::getInstancePtr()->createTexture(this->getPrefixName()));
	pTexture->createManual(widthOfMyWidget, heightOfMyWidget, MyGUI::TextureUsage::RenderTarget, MyGUI::PixelFormat::R8G8B8A8);
	
}

and for me no any problem render texture, because when for test i load png to texture

if (pTexture)
	pTexture->loadFromFile("sleep.png");

it works correct, but question how to render to texture (MYGUI WIDGET or any dynamic component), because rtt layer render all npc names at same time to one texture layer.

Im also tried render with custom function

getGuiPlatform()->getRenderManagerPtr()->renderCustomWidget(m_uiInfoBar), but seems it incorrect, because texture are empty

void DirectXRenderManager::renderCustomWidget(MyGUI::Widget* _item)
{
	Gui* gui = Gui::getInstancePtr();
	if (gui == nullptr)
		return;

	static Timer timer;
	static unsigned long last_time = timer.getMilliseconds();
	unsigned long now_time = timer.getMilliseconds();
	unsigned long time = now_time - last_time;

	onFrameEvent((float)((double)(time) / 1000.0));

	last_time = now_time;

	beginText();

	auto layerNode = (MyGUI::ILayerNode*)_item->getLayerNode();

	auto texture = _item->getTexture();
	if (!texture)
		return;
	MyGUI::IRenderTarget* target = texture->getRenderTarget();

	layerNode->renderToTarget(target, true);

	endText();
}

The only issue, i dont understand how to correct render widget to custom texture separate, because RTT_Layer render all widgets on big texture (size equals screen size example)

[Altren]

It depends on the number of widgets that need to be rendered this way. If all can fit into a single texture, then you should do that, but use different positions. And use UVs to show different parts of the texture on different planes.
Alternatively, you can use different textures, but this might hit performance.

[risingforceonline]

Well there are steps are following:

1. import RTT_Layer.h/cpp
2. add to mygui layers

<Layer type="RTTLayer" name="GUI_TextRender">
		<Property key="Pick" value="false"/>
		<Property key="TextureSize" value="1024 1024"/>
		<Property key="TextureName" value="rtTexture"/>
	</Layer>

3. Switched

<?xml version="1.0" encoding="UTF-8"?>
<MyGUI type="Layout" version="3.2.0">
    <Widget type="Window" skin="skinDef" position="140 85 285 115" align="Left Top" layer="GUI_TextRender" name="_Main">
        <Property key="Alpha" value="1"/>
        <Property key="Visible" value="true"/>
        <Property key="InheritsPick" value="true"/>
        <Property key="NeedMouse" value="false"/>
        <Widget type="Widget" skin="PanelSkin_Center_Style1" position="16 0 253 25" align="HStretch Top" name="chatBackground">
            <Property key="Visible" value="true"/>
            <Widget type="TextBox" skin="TextBox" position="5 0 243 25" align="Stretch" name="chatText">
                <Property key="TextColour" value="1 1 1"/>
                <Property key="TextAlign" value="Center"/>
                <Property key="FontName" value="Arial"/>
                <Property key="TextShadowColour" value="0 0 0"/>
                <Property key="TextShadow" value="true"/>
                <Property key="NeedMouse" value="false"/>
                <Property key="Caption" value="NPC NAME"/>
            </Widget>
        </Widget>
    </Widget>
    <CodeGeneratorSettings/>
</MyGUI>

4. On run checked if RTT Layer works correct, it render to RTT_Layer implementation.
5. Later i'm trying to get layer by name

auto pTexture = static_cast<MyGUI::DirectXTexture*>(MyGUI::RenderManager::getInstancePtr()->getTexture("rtLayer"));
if (!pTexture)
	return true;

float u[2] = { 0,1 };
float v[2] = { 0,1 };
float l_Pos[4];
Draw2DSprite3D_UseZBuffer(l_Pos, (float)pTexture->getWidth(), (float)pTexture->getHeight(), u, v, pTexture->getDirectXTexture(), 0xffffffff);

But in this case i got similiar effect, than texture (on screen) is drawing, i see name in correct possition, but still see them cross wall or any map object like cave and etc.

P.S full function implement:

void Draw2DSprite3D_UseZBuffer(float *xyzw,float w,float h,float u[2],float v[2],void *tex, uint32_t color)
{
	float sx=xyzw[0];
	float sy=xyzw[1];
	_TLTEX1 vert [4];

	vert[0].Pos[0] = sx + 0 -0.5f;
	vert[0].Pos[1] = sy + h -0.5f;
	vert[0].Pos[2] = xyzw[2];
	vert[0].Pos[3] = xyzw[3];

	vert[2].Pos[0] = sx + 0 -0.5f;
	vert[2].Pos[1] = sy - 0 -0.5f;
	vert[2].Pos[2] = xyzw[2];
	vert[2].Pos[3] = xyzw[3];

	vert[1].Pos[0] = sx + w -0.5f;
	vert[1].Pos[1] = sy + h -0.5f;
	vert[1].Pos[2] = xyzw[2];
	vert[1].Pos[3] = xyzw[3];

	vert[3].Pos[0] = sx + w -0.5f;
	vert[3].Pos[1] = sy - 0 -0.5f;
	vert[3].Pos[2] = xyzw[2];
	vert[3].Pos[3] = xyzw[3];

	vert[0].UV[0] = u[0];
	vert[0].UV[1] = v[1];

	vert[2].UV[0] = u[0];
	vert[2].UV[1] = v[0];

	vert[1].UV[0] = u[1];
	vert[1].UV[1] = v[1];

	vert[3].UV[0] = u[1];
	vert[3].UV[1] = v[0];

	Draw2DSpriteTLTEX1(vert,tex);
}

and set texture with draw:

{
	auto pd3dDevice = D3dDevice();

	if(tex==NULL)
	{
		pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP,   D3DTOP_SELECTARG2 );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
		pd3dDevice->SetTexture(0, NULL);
	}
	else
	{
		pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP,   D3DTOP_MODULATE );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP,   D3DTOP_MODULATE );
		pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
		pd3dDevice->SetTexture(0, (LPDIRECT3DTEXTURE9)tex);
	}
	pd3dDevice->SetTextureStageState( 1, D3DTSS_COLOROP,   D3DTOP_DISABLE );
	pd3dDevice->SetTextureStageState( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
	
	pd3dDevice->SetFVF( _D3DFVF_TLTEX1 );
	pd3dDevice->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, (LPVOID) vbuffer, sizeof(_TLTEX1));
}

but there still problem which i get just using shared or overlaped layer, textbox render ignoring obstacles. Seems my issue with how i'm trying texture, i've also tried render texture when default directx text render (using dx9 font to render name) and still got same issue.

As i said before, when trying render just texture loaded from file, it draws correct with function i've provided, but here 1 confusing items for me: we got 1 layer texture and position on layer corrcet, but still ignore z-buffer.

[risingforceonline]

Well, after several attempts i got few problems:

1. If I used RTT_Layer from example, it render with same problem, position of widgets are correct in 3d world, but still ignore zBuffer, also if i'm trying just render texture or save it as file, texture from rtt layer are empty, but if I will use mygui directx render, it renders in world, but with disabled zbuffer, enabling flag are not working for me.

2. If i goes depeer, and just grab code to render inside where i'm rendering using dx9 font name or myguitexture as just image.

size_t _count = obj->getVertexCount();
MyGUI::DirectXTexture* dxTex = static_cast<MyGUI::DirectXTexture*>(obj->getTexture());
GetD3dDevice()->SetTexture(0, dxTex->getDirectXTexture());
MyGUI::DirectXVertexBuffer* dxVB = static_cast<MyGUI::DirectXVertexBuffer*>(obj->getIVertexBuffer());
dxVB->setToStream(0);

it's render but still ignore depth and render over all map objects, but we need call void RenderItem::renderToTarget manually, because there are also part of logic to correct render

Vertex* buffer = mVertexBuffer->lock();
if (buffer != nullptr)
{
	for (auto& item : mDrawItems)
	{
		mCurrentVertex = buffer;
		mLastVertexCount = 0;

		item.first->doRender();

		MYGUI_DEBUG_ASSERT(mLastVertexCount <= item.second, "It is too much vertexes");
		buffer += mLastVertexCount;
		mCountVertex += mLastVertexCount;
	}

	mVertexBuffer->unlock();
}

3. Also tried

// this function i've provided early, it just trying render to custom texture, but texture are still empty, but render with same problem if I render with same issue.

getGuiPlatform()->getRenderManagerPtr()->renderCustomWidget(m_uiInfoBar->GetMainWidget());


		auto pTexture = static_cast<MyGUI::DirectXTexture*>(MyGUI::RenderManager::getInstancePtr()->getTexture(m_uiInfoBar->getPrefixName()));
		if (!pTexture)
			return false;

		float u[2] = { 0,1 };
		float v[2] = { 0,1 };
		Draw2DSprite(0, 0, pTexture->getWidth(), pTexture->getHeight(), pTexture->getDirectXTexture(), 0xFFFFFFF);
		Draw2DSprite3D_UseZBuffer(l_vecRenderPos, (float)pTexture->getWidth(), (float)pTexture->getHeight(), u, v, pTexture->getDirectXTexture(), 0xffffffff);
		

In this case any ideas or tips how to render any widget to custom texture (MyGUI::ITexture)? Because, there are only problem that texture anyway is empty, but when using mygui render and trying save it when render, texture also just empty.

Trying hard code save it here

void DirectXRenderManager::doRender(IVertexBuffer* _buffer, ITexture* _texture, size_t _count)
{
	DirectXTexture* dxTex = static_cast<DirectXTexture*>(_texture);
	mpD3DDevice->SetTexture(0, dxTex->getDirectXTexture());
	//mpD3DDevice->SetSamplerState(0, D3DSAMP_SRGBTEXTURE, FALSE);
	DirectXVertexBuffer* dxVB = static_cast<DirectXVertexBuffer*>(_buffer);
	dxVB->setToStream(0);
	// count in vertexes, triangle_list = vertexes / 3
	mpD3DDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, _count / 3);
} 

but texture there use for original image for font or elements, but vertexbuffer store info about what we need take from texture and how to render.

Issue for me, that my texture are empty anyway and i can't render it to my custom plane on scene.