Java example source code file (D3DMaskCache.cpp)

This example Java source code file (D3DMaskCache.cpp) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

d3d_mask_cache_height_in_texels, d3d_mask_cache_width_in_texels, d3dmaskcache, d3dmaskcache\:\:createinstance, d3dmaskcache\:\:d3dmaskcache, d3dmaskcache\:\:disable, d3dmaskcache\:\:enable, d3dmaskcache\:\:init, d3dresource, hresult, j2dtraceln, j2dtraceln1, null, return_status_if_failed

The D3DMaskCache.cpp Java example source code

/*
 * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include "D3DMaskCache.h"

HRESULT
D3DMaskCache::CreateInstance(D3DContext *pCtx, D3DMaskCache **ppMaskCache)
{
    HRESULT res;

    J2dTraceLn(J2D_TRACE_INFO, "D3DMaskCache::CreateInstance");

    *ppMaskCache = new D3DMaskCache();
    if (FAILED(res = (*ppMaskCache)->Init(pCtx))) {
        delete *ppMaskCache;
        *ppMaskCache = NULL;
    }
    return res;
}

D3DMaskCache::D3DMaskCache()
{
    J2dTraceLn(J2D_TRACE_INFO, "D3DMaskCache::D3DMaskCache");
    this->pCtx = NULL;
    maskCacheIndex = 0;
}

D3DMaskCache::~D3DMaskCache()
{
    J2dTraceLn(J2D_TRACE_INFO, "D3DMaskCache::~D3DMaskCache");
    pCtx = NULL;
    maskCacheIndex = 0;
}

HRESULT
D3DMaskCache::Init(D3DContext *pCtx)
{
    J2dTraceLn1(J2D_TRACE_INFO, "D3DMaskCache::Init pCtx=%x", pCtx);
    this->pCtx = pCtx;
    this->maskCacheIndex = 0;
    return S_OK;
}

HRESULT D3DMaskCache::Enable()
{
    HRESULT res;

    J2dTraceLn(J2D_TRACE_INFO, "D3DMaskCache::Enable");

    D3DResource *pMaskTexRes;
    res = pCtx->GetResourceManager()->GetMaskTexture(&pMaskTexRes);
    RETURN_STATUS_IF_FAILED(res);

    res = pCtx->SetTexture(pMaskTexRes->GetTexture(), 0);

    IDirect3DDevice9 *pd3dDevice = pCtx->Get3DDevice();
    D3DTEXTUREFILTERTYPE fhint =
        pCtx->IsTextureFilteringSupported(D3DTEXF_NONE) ?
            D3DTEXF_NONE : D3DTEXF_POINT;
    pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, fhint);
    pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, fhint);

    return res;
}

HRESULT D3DMaskCache::Disable()
{
    J2dTraceLn(J2D_TRACE_INFO, "D3DMaskCache::Disable");

    maskCacheIndex = 0;

    return pCtx->SetTexture(NULL, 0);
}

HRESULT D3DMaskCache::AddMaskQuad(int srcx, int srcy,
                                  int dstx, int dsty,
                                  int width, int height,
                                  int maskscan, void *mask)
{
    HRESULT res;
    float tx1, ty1, tx2, ty2;
    float dx1, dy1, dx2, dy2;

    J2dTraceLn1(J2D_TRACE_INFO, "D3DVertexCacher::AddMaskQuad: %d",
                maskCacheIndex);

    if (maskCacheIndex >= D3D_MASK_CACHE_MAX_INDEX ||
        pCtx->pVCacher->GetFreeVertices() < 6)
    {
        res = pCtx->pVCacher->Render();
        RETURN_STATUS_IF_FAILED(res);
        maskCacheIndex = 0;
    }

    if (mask != NULL) {
        int texx = D3D_MASK_CACHE_TILE_WIDTH *
            (maskCacheIndex % D3D_MASK_CACHE_WIDTH_IN_TILES);
        int texy = D3D_MASK_CACHE_TILE_HEIGHT *
            (maskCacheIndex / D3D_MASK_CACHE_WIDTH_IN_TILES);
        D3DResource *pMaskTexRes;

        res = pCtx->GetResourceManager()->GetMaskTexture(&pMaskTexRes);
        RETURN_STATUS_IF_FAILED(res);

        // copy alpha mask into texture tile
        pCtx->UploadTileToTexture(pMaskTexRes, mask,
                                  texx, texy,
                                  srcx, srcy,
                                  width, height,
                                  maskscan,
                                  TILEFMT_1BYTE_ALPHA);

        tx1 = ((float)texx) / D3D_MASK_CACHE_WIDTH_IN_TEXELS;
        ty1 = ((float)texy) / D3D_MASK_CACHE_HEIGHT_IN_TEXELS;

        maskCacheIndex++;
    } else {
        // use special fully opaque tile
        tx1 = ((float)D3D_MASK_CACHE_SPECIAL_TILE_X) /
            D3D_MASK_CACHE_WIDTH_IN_TEXELS;
        ty1 = ((float)D3D_MASK_CACHE_SPECIAL_TILE_Y) /
            D3D_MASK_CACHE_HEIGHT_IN_TEXELS;
    }

    tx2 = tx1 + (((float)width) / D3D_MASK_CACHE_WIDTH_IN_TEXELS);
    ty2 = ty1 + (((float)height) / D3D_MASK_CACHE_HEIGHT_IN_TEXELS);

    dx1 = (float)dstx;
    dy1 = (float)dsty;
    dx2 = dx1 + width;
    dy2 = dy1 + height;

    return pCtx->pVCacher->DrawTexture(dx1, dy1, dx2, dy2,
                                       tx1, ty1, tx2, ty2);
}