MilkDrop3/code/vis_milk2/dxcontext.cpp

/*
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-------
Copyright 2005-2013 Nullsoft, Inc.
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are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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*/

#include "DXContext.h"
#include "utility.h"
#include "shell_defines.h"
#include <strsafe.h>

DXContext::DXContext(LPDIRECT3DDEVICE9 device, D3DPRESENT_PARAMETERS* d3dpp, HWND hwnd, wchar_t* szIniFile)
{
    m_szWindowCaption[0] = 0;
    m_hwnd = hwnd;
    m_lpDevice = device;
    m_d3dpp = d3dpp;
    m_hmod_d3d9 = NULL;
    m_hmod_d3dx9 = NULL;
    m_zFormat = D3DFMT_UNKNOWN;
    for (int i = 0; i<MAX_DXC_ADAPTERS; i++)
        m_orig_windowed_mode_format[i] = D3DFMT_UNKNOWN;
    m_ordinal_adapter = D3DADAPTER_DEFAULT;
    m_winamp_minimized = 0;
    m_truly_exiting = 0;
    m_bpp = 0;
    m_frame_delay = 0;
    StringCbCopyW(m_szIniFile, sizeof(m_szIniFile), szIniFile);
    m_szDriver[0] = 0;
    m_szDesc[0] = 0;
    m_lastErr = S_OK;
    m_ready = FALSE;
}

DXContext::~DXContext()
{
    Internal_CleanUp();
}

void DXContext::Internal_CleanUp()
{
    m_ready = FALSE;
}

BOOL DXContext::Internal_Init(DXCONTEXT_PARAMS *pParams, BOOL bFirstInit)
{
    memcpy(&m_current_mode, pParams, sizeof(DXCONTEXT_PARAMS));

    memset(&m_caps, 0, sizeof(m_caps));
    m_lpDevice->GetDeviceCaps(&m_caps);
    m_bpp = 32;

    m_ready = TRUE;
    return TRUE;
}

BOOL DXContext::StartOrRestartDevice(DXCONTEXT_PARAMS *pParams)
{

    // call this to [re]initialize the DirectX environment with new parameters.
    // examples: startup; toggle windowed/fullscreen mode; change fullscreen resolution;
    //   and so on.
    // be sure to clean up all your DirectX stuff first (textures, vertex buffers,
    //   D3DX allocations, etc.) and reallocate it afterwards!

    // note: for windowed mode, 'pParams->disp_mode' (w/h/r/f) is ignored.

    if (!m_ready)
    {
        // first-time init: create a fresh new device
        return Internal_Init(pParams, TRUE);
    }
    else
    {
        // re-init: preserve the DX9 object (m_lpD3D),
        // but destroy and re-create the DX9 device (m_lpDevice).
        m_ready = FALSE;

        //SafeRelease(m_lpDevice);
        // but leave the D3D object!

        //		RestoreWinamp();
        return Internal_Init(pParams, FALSE);
    }
}

HWND DXContext::GetHwnd() { return m_hwnd; }
bool DXContext::TempIgnoreDestroyMessages() { return false; }
void DXContext::SaveWindow() { }

void DXContext::WriteSafeWindowPos()
{
    WritePrivateProfileIntW(64, L"nMainWndTop", m_szIniFile, L"settings");
    WritePrivateProfileIntW(64, L"nMainWndLeft", m_szIniFile, L"settings");
    WritePrivateProfileIntW(64 + 256, L"nMainWndRight", m_szIniFile, L"settings");
    WritePrivateProfileIntW(64 + 256, L"nMainWndBottom", m_szIniFile, L"settings");
    WritePrivateProfileIntW(64, L"avs_wx", m_szIniFile, L"settings");
    WritePrivateProfileIntW(64, L"avs_wy", m_szIniFile, L"settings");
    WritePrivateProfileIntW(256, L"avs_ww", m_szIniFile, L"settings");
    WritePrivateProfileIntW(256, L"avs_wh", m_szIniFile, L"settings");
}

bool DXContext::OnUserResizeWindow(RECT *new_window_rect, RECT *new_client_rect)
{
    // call this function on WM_EXITSIZEMOVE when running windowed.
    // don't bother calling this when fullscreen.
    // be sure to clean up all your DirectX stuff first (textures, vertex buffers,
    //   D3DX allocations, etc.) and reallocate it afterwards!

    if (!m_ready)
        return FALSE;

    if ((m_client_width == new_client_rect->right - new_client_rect->left) &&
        (m_client_height == new_client_rect->bottom - new_client_rect->top) &&
        (m_window_width == new_window_rect->right - new_window_rect->left) &&
        (m_window_height == new_window_rect->bottom - new_window_rect->top))
    {
        return TRUE;
    }

    m_ready = FALSE;

    m_window_width = new_window_rect->right - new_window_rect->left;
    m_window_height = new_window_rect->bottom - new_window_rect->top;
    m_client_width = m_REAL_client_width = new_client_rect->right - new_client_rect->left;
    m_client_height = m_REAL_client_height = new_client_rect->bottom - new_client_rect->top;

    m_d3dpp->BackBufferWidth = m_client_width;
    m_d3dpp->BackBufferHeight = m_client_height;
    if (m_lpDevice->Reset(m_d3dpp) != D3D_OK)
    {
        WriteSafeWindowPos();
        m_lastErr = DXC_ERR_RESIZEFAILED;
        return FALSE;
    }

    SetViewport();
    m_ready = TRUE;
    return TRUE;
}

void DXContext::SetViewport()
{
    D3DVIEWPORT9 v;
    v.X = 0;
    v.Y = 0;
    v.Width = m_client_width;
    v.Height = m_client_height;
    v.MinZ = 0.0f;
    v.MaxZ = 1.0f;
    m_lpDevice->SetViewport(&v);
}