summaryrefslogtreecommitdiff
path: root/vcl/opengl/x11/gdiimpl.cxx
blob: 4c592842d9d8a1a2876680e74002947a2ccf6156 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <vcl/salbtype.hxx>

#include <svdata.hxx>

#include <unx/pixmap.hxx>
#include <unx/saldisp.hxx>
#include <unx/salframe.h>
#include <unx/salgdi.h>
#include <unx/salvd.h>
#include <unx/x11/xlimits.hxx>

#include <opengl/texture.hxx>
#include <opengl/x11/gdiimpl.hxx>
#include <opengl/x11/salvd.hxx>

#include <vcl/opengl/OpenGLContext.hxx>
#include <vcl/opengl/OpenGLHelper.hxx>

#include <o3tl/lru_map.hxx>

X11OpenGLSalGraphicsImpl::X11OpenGLSalGraphicsImpl( X11SalGraphics& rParent ):
    OpenGLSalGraphicsImpl(rParent,rParent.GetGeometryProvider()),
    mrParent(rParent)
{
}

X11OpenGLSalGraphicsImpl::~X11OpenGLSalGraphicsImpl()
{
}

void X11OpenGLSalGraphicsImpl::Init()
{
    // The m_pFrame and m_pVDev pointers are updated late in X11
    mpProvider = mrParent.GetGeometryProvider();
    OpenGLSalGraphicsImpl::Init();
}

OpenGLContext* X11OpenGLSalGraphicsImpl::CreateWinContext()
{
    X11WindowProvider *pProvider = dynamic_cast<X11WindowProvider*>(mrParent.m_pFrame);

    if( !pProvider )
        return NULL;

    Window aWin = pProvider->GetX11Window();
    OpenGLContext* pContext = new OpenGLContext();
    pContext->init( mrParent.GetXDisplay(), aWin,
                    mrParent.m_nXScreen.getXScreen() );
    return pContext;
}

bool X11OpenGLSalGraphicsImpl::UseContext( OpenGLContext* pContext )
{
    X11WindowProvider *pProvider = dynamic_cast<X11WindowProvider*>(mrParent.m_pFrame);

    if( !pContext->isInitialized() )
        return false;

    if( !pProvider )
        return ( pContext->getOpenGLWindow().win != None );
    else
        return ( pContext->getOpenGLWindow().win == pProvider->GetX11Window() );
}

void X11OpenGLSalGraphicsImpl::copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics )
{
    OpenGLSalGraphicsImpl *pImpl = pSrcGraphics ? static_cast< OpenGLSalGraphicsImpl* >(pSrcGraphics->GetImpl()) : static_cast< OpenGLSalGraphicsImpl *>(mrParent.GetImpl());
    OpenGLSalGraphicsImpl::DoCopyBits( rPosAry, *pImpl );
}

bool X11OpenGLSalGraphicsImpl::FillPixmapFromScreen( X11Pixmap* pPixmap, int nX, int nY )
{
    Display* pDisplay = mrParent.GetXDisplay();
    SalX11Screen nScreen = mrParent.GetScreenNumber();
    XVisualInfo aVisualInfo;
    XImage* pImage;
    char* pData;

    SAL_INFO( "vcl.opengl", "FillPixmapFromScreen" );

    if( !OpenGLHelper::GetVisualInfo( pDisplay, nScreen.getXScreen(), aVisualInfo ) )
        return false;

    // make sure everything is synced up before reading back
    mpContext->makeCurrent();
    glXWaitX();

    // TODO: lfrb: What if offscreen?
    pData = static_cast<char*>(malloc( pPixmap->GetWidth() * pPixmap->GetHeight() * 4 ));
    glPixelStorei( GL_PACK_ALIGNMENT, 1 );
    glReadPixels( nX, GetHeight() - nY, pPixmap->GetWidth(), pPixmap->GetHeight(),
                  GL_RGBA, GL_UNSIGNED_BYTE, pData );

    pImage = XCreateImage( pDisplay, aVisualInfo.visual, 24, ZPixmap, 0, pData,
                           pPixmap->GetWidth(), pPixmap->GetHeight(), 8, 0 );
    XInitImage( pImage );
    GC aGC = XCreateGC( pDisplay, pPixmap->GetPixmap(), 0, NULL );
    XPutImage( pDisplay, pPixmap->GetDrawable(), aGC, pImage,
               0, 0, 0, 0, pPixmap->GetWidth(), pPixmap->GetHeight() );
    XFreeGC( pDisplay, aGC );
    XDestroyImage( pImage );

    CHECK_GL_ERROR();
    return true;
}

typedef typename std::pair<ControlCacheKey, std::unique_ptr<TextureCombo>> ControlCachePair;
typedef o3tl::lru_map<ControlCacheKey, std::unique_ptr<TextureCombo>, ControlCacheHashFunction> ControlCacheType;

ControlCacheType gTextureCache(200);

bool X11OpenGLSalGraphicsImpl::RenderPixmap(X11Pixmap* pPixmap, X11Pixmap* pMask, int nX, int nY, TextureCombo& rCombo)
{
    const int aAttribs[] =
    {
        GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
        GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGBA_EXT,
        None
    };

    Display* pDisplay = mrParent.GetXDisplay();
    bool bInverted;

    const long nWidth = pPixmap->GetWidth();
    const long nHeight = pPixmap->GetHeight();
    SalTwoRect aPosAry(0, 0, nWidth, nHeight, nX, nY, nWidth, nHeight);

    PreDraw();
    //glClear( GL_COLOR_BUFFER_BIT );

    XSync( pDisplay, 0 );
    GLXFBConfig pFbConfig = OpenGLHelper::GetPixmapFBConfig( pDisplay, bInverted );
    GLXPixmap pGlxPixmap = glXCreatePixmap( pDisplay, pFbConfig, pPixmap->GetPixmap(), aAttribs);
    GLXPixmap pGlxMask;
    if( pMask != NULL )
        pGlxMask = glXCreatePixmap( pDisplay, pFbConfig, pMask->GetPixmap(), aAttribs);
    else
        pGlxMask = 0;
    XSync( pDisplay, 0 );

    if( !pGlxPixmap )
        SAL_WARN( "vcl.opengl", "Couldn't create GLXPixmap" );

    //TODO: lfrb: glXGetProc to get the functions

    rCombo.mpTexture.reset(new OpenGLTexture(pPixmap->GetWidth(), pPixmap->GetHeight(), false));

    glActiveTexture( GL_TEXTURE0 );
    rCombo.mpTexture->Bind();
    glXBindTexImageEXT( pDisplay, pGlxPixmap, GLX_FRONT_LEFT_EXT, NULL );
    rCombo.mpTexture->Unbind();

    if( pMask != NULL && pGlxMask )
    {
        rCombo.mpMask.reset(new OpenGLTexture(pPixmap->GetWidth(), pPixmap->GetHeight(), false));
        rCombo.mpMask->Bind();
        glXBindTexImageEXT( pDisplay, pGlxMask, GLX_FRONT_LEFT_EXT, NULL );
        rCombo.mpMask->Unbind();

        DrawTextureDiff(*rCombo.mpTexture, *rCombo.mpMask, aPosAry, bInverted);

        glXReleaseTexImageEXT( pDisplay, pGlxMask, GLX_FRONT_LEFT_EXT );
        glXDestroyPixmap( pDisplay, pGlxMask );
    }
    else
    {
        DrawTexture(*rCombo.mpTexture, aPosAry, bInverted);
    }

    CHECK_GL_ERROR();

    glXReleaseTexImageEXT( pDisplay, pGlxPixmap, GLX_FRONT_LEFT_EXT );
    glXDestroyPixmap( pDisplay, pGlxPixmap );

    PostDraw();

    CHECK_GL_ERROR();

    return true;
}

bool X11OpenGLSalGraphicsImpl::RenderPixmapToScreen( X11Pixmap* pPixmap, X11Pixmap* pMask, int nX, int nY )
{
    SAL_INFO( "vcl.opengl", "RenderPixmapToScreen (" << nX << " " << nY << ")" );

    TextureCombo aCombo;
    return RenderPixmap(pPixmap, pMask, nX, nY, aCombo);
}

bool X11OpenGLSalGraphicsImpl::TryRenderCachedNativeControl(ControlCacheKey& rControlCacheKey, int nX, int nY)
{
    static bool gbCacheEnabled = !getenv("SAL_WITHOUT_WIDGET_CACHE");

    if (!gbCacheEnabled)
        return false;

    ControlCacheType::const_iterator iterator = gTextureCache.find(rControlCacheKey);

    if (iterator == gTextureCache.end())
        return false;

    const std::unique_ptr<TextureCombo>& pCombo = iterator->second;

    PreDraw();

    OpenGLTexture& rTexture = *pCombo->mpTexture;

    SalTwoRect aPosAry(0,  0,  rTexture.GetWidth(), rTexture.GetHeight(),
                       nX, nY, rTexture.GetWidth(), rTexture.GetHeight());

    if (pCombo->mpMask)
        DrawTextureDiff(rTexture, *pCombo->mpMask, aPosAry, true);
    else
        DrawTexture(rTexture, aPosAry, true);

    PostDraw();

    return true;
}

bool X11OpenGLSalGraphicsImpl::RenderAndCacheNativeControl(X11Pixmap* pPixmap, X11Pixmap* pMask, int nX, int nY,
                                                           ControlCacheKey& aControlCacheKey)
{
    std::unique_ptr<TextureCombo> pCombo(new TextureCombo);
    bool bResult = RenderPixmap(pPixmap, pMask, nX, nY, *pCombo);
    if (!bResult)
        return false;

    if (!aControlCacheKey.canCacheControl())
        return true;

    ControlCachePair pair(aControlCacheKey, std::move(pCombo));
    gTextureCache.insert(std::move(pair));

    return bResult;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */