// Platform implementation of 40250 GameLib/MapOutdoorCharacterShadow.cpp. The render-target lifecycle is
// the 40250 code as is; the shadow-map pass is not run (BeginRenderCharacterShadowToTexture reports it
// cannot render) because the terrain that samples the map is drawn by Godot, which casts its own
// character shadows (PORT-PLAN §3).
#include "GameLib/StdAfx.h"
#include "EterLib/StateManager.h"
#include "EterLib/Camera.h"

#include "GameLib/MapOutdoor.h"

static int recreate = false;

void CMapOutdoor::SetShadowTextureSize(WORD size)
{
	if (m_wShadowMapSize != size)
	{
		recreate = true;
		Tracenf("ShadowTextureSize changed %d -> %d", m_wShadowMapSize, size);
	}

	m_wShadowMapSize = size;
}

void CMapOutdoor::CreateCharacterShadowTexture()
{
	extern bool GRAPHICS_CAPS_CAN_NOT_DRAW_SHADOW;

	if (GRAPHICS_CAPS_CAN_NOT_DRAW_SHADOW)
		return;

	ReleaseCharacterShadowTexture();

	if (IsLowTextureMemory())
		SetShadowTextureSize(128);

	m_ShadowMapViewport.X = 1;
	m_ShadowMapViewport.Y = 1;
	m_ShadowMapViewport.Width = m_wShadowMapSize - 2;
	m_ShadowMapViewport.Height = m_wShadowMapSize - 2;
	m_ShadowMapViewport.MinZ = 0.0f;
	m_ShadowMapViewport.MaxZ = 1.0f;

	if (FAILED(ms_lpd3dDevice->CreateTexture(m_wShadowMapSize, m_wShadowMapSize, 1, D3DUSAGE_RENDERTARGET, D3DFMT_R5G6B5, D3DPOOL_DEFAULT, &m_lpCharacterShadowMapTexture)))
	{
		TraceError("CMapOutdoor Unable to create Character Shadow render target texture\n");
		return;
	}

	if (FAILED(m_lpCharacterShadowMapTexture->GetSurfaceLevel(0, &m_lpCharacterShadowMapRenderTargetSurface)))
	{
		TraceError("CMapOutdoor Unable to GetSurfaceLevel Character Shadow render target texture\n");
		return;
	}

	if (FAILED(ms_lpd3dDevice->CreateDepthStencilSurface(m_wShadowMapSize, m_wShadowMapSize, D3DFMT_D16, D3DMULTISAMPLE_NONE, &m_lpCharacterShadowMapDepthSurface)))
	{
		TraceError("CMapOutdoor Unable to create Character Shadow depth Surface\n");
		return;
	}
}

void CMapOutdoor::ReleaseCharacterShadowTexture()
{
	SAFE_RELEASE(m_lpCharacterShadowMapRenderTargetSurface);
	SAFE_RELEASE(m_lpCharacterShadowMapDepthSurface);
	SAFE_RELEASE(m_lpCharacterShadowMapTexture);
}

// PORT: no shadow-map pass (see the file comment); CPythonBackground::RenderCharacterShadowToTexture
// then skips the shadow instances.
bool CMapOutdoor::BeginRenderCharacterShadowToTexture()
{
	return false;
}

// PORT: nothing to restore when the pass did not begin.
void CMapOutdoor::EndRenderCharacterShadowToTexture()
{
}