[Libreoffice-commits] core.git: 6 commits - vcl/inc vcl/opengl vcl/Package_opengl.mk vcl/source

Michael Meeks michael.meeks at collabora.com
Mon Nov 17 14:39:34 PST 2014


 vcl/Package_opengl.mk                          |    1 
 vcl/inc/opengl/salbmp.hxx                      |    2 
 vcl/inc/opengl/win/gdiimpl.hxx                 |    1 
 vcl/inc/opengl/x11/gdiimpl.hxx                 |    1 
 vcl/inc/openglgdiimpl.hxx                      |   16 ++
 vcl/opengl/gdiimpl.cxx                         |  174 ++++++++++++++++++++++---
 vcl/opengl/maskFragmentShader.glsl             |   10 -
 vcl/opengl/salbmp.cxx                          |   31 +++-
 vcl/opengl/transformedTextureVertexShader.glsl |   24 +++
 vcl/opengl/win/gdiimpl.cxx                     |    6 
 vcl/opengl/x11/gdiimpl.cxx                     |    6 
 vcl/source/opengl/OpenGLContext.cxx            |   27 +++
 12 files changed, 262 insertions(+), 37 deletions(-)

New commits:
commit 414c2e2d5ae4c47865adf0338ef7e117fbb8775e
Author: Michael Meeks <michael.meeks at collabora.com>
Date:   Mon Nov 17 21:07:27 2014 +0000

    vcl: initialize data when XGetWindowAttributes fails.
    
    Change-Id: If6fc99483c06efec9a600226a09ead9a3f6dab59

diff --git a/vcl/source/opengl/OpenGLContext.cxx b/vcl/source/opengl/OpenGLContext.cxx
index e7f7f71..33a019d 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -463,7 +463,12 @@ GLXFBConfig* getFBConfig(Display* dpy, Window win, int& nBestFBC, bool bUseDoubl
     SAL_INFO("vcl.opengl", "window: " << win);
 
     XWindowAttributes xattr;
-    XGetWindowAttributes( dpy, win, &xattr );
+    if( !XGetWindowAttributes( dpy, win, &xattr ) )
+    {
+        SAL_WARN("vcl.opengl", "Failed to get window attributes for fbconfig " << win);
+        xattr.screen = 0;
+        xattr.visual = NULL;
+    }
 
     int screen = XScreenNumberOfScreen( xattr.screen );
 
@@ -535,7 +540,11 @@ Visual* getVisual(Display* dpy, Window win)
     initOpenGLFunctionPointers();
 
     XWindowAttributes xattr;
-    XGetWindowAttributes( dpy, win, &xattr );
+    if( !XGetWindowAttributes( dpy, win, &xattr ) )
+    {
+        SAL_WARN("vcl.opengl", "Failed to get window attributes for getVisual " << win);
+        xattr.visual = NULL;
+    }
     SAL_INFO("vcl.opengl", "using VisualID " << xattr.visual);
     return xattr.visual;
 }
@@ -694,9 +703,17 @@ bool OpenGLContext::ImplInit()
     SAL_INFO("vcl.opengl", "available GL  extensions: " << m_aGLWin.GLExtensions);
 
     XWindowAttributes xWinAttr;
-    XGetWindowAttributes( m_aGLWin.dpy, m_aGLWin.win, &xWinAttr );
-    m_aGLWin.Width = xWinAttr.width;
-    m_aGLWin.Height = xWinAttr.height;
+    if( !XGetWindowAttributes( m_aGLWin.dpy, m_aGLWin.win, &xWinAttr ) )
+    {
+        SAL_WARN("vcl.opengl", "Failed to get window attributes on " << m_aGLWin.win);
+        m_aGLWin.Width = 0;
+        m_aGLWin.Height = 0;
+    }
+    else
+    {
+        m_aGLWin.Width = xWinAttr.width;
+        m_aGLWin.Height = xWinAttr.height;
+    }
 
     if( m_aGLWin.HasGLXExtension("GLX_SGI_swap_control" ) )
     {
commit 1c20a126d43ca34332f050f6eb847621de99e1b0
Author: Michael Meeks <michael.meeks at collabora.com>
Date:   Mon Nov 17 20:33:41 2014 +0000

    vcl: only use default windows' GL Context for bitmaps if NULL / uninitialized.
    
    Change-Id: I6465c548ba5d50da2cca7cce24e9bd2a20b28f47

diff --git a/vcl/opengl/salbmp.cxx b/vcl/opengl/salbmp.cxx
index 780c268..15ef1b3 100644
--- a/vcl/opengl/salbmp.cxx
+++ b/vcl/opengl/salbmp.cxx
@@ -464,14 +464,17 @@ sal_uInt16 OpenGLSalBitmap::GetBitCount() const
 
 bool OpenGLSalBitmap::makeCurrent()
 {
-    OpenGLContextProvider *pProvider;
-    pProvider = dynamic_cast< OpenGLContextProvider* >( ImplGetDefaultWindow()->GetGraphics() );
-    if( pProvider == NULL )
+    if (!mpContext || !mpContext->isInitialized())
     {
-        SAL_WARN( "vcl.opengl", "Couldn't get default OpenGL context provider" );
-        return false;
+        OpenGLContextProvider *pProvider;
+        pProvider = dynamic_cast< OpenGLContextProvider* >( ImplGetDefaultWindow()->GetGraphics() );
+        if( pProvider == NULL )
+        {
+            SAL_WARN( "vcl.opengl", "Couldn't get default OpenGL context provider" );
+            return false;
+        }
+        mpContext = pProvider->GetOpenGLContext();
     }
-    mpContext = pProvider->GetOpenGLContext();
     mpContext->makeCurrent();
     return true;
 }
commit 95017eaf851c6b97db38cd226b6bea661e73dc60
Author: Louis-Francis Ratté-Boulianne <lfrb at collabora.com>
Date:   Mon Nov 17 10:00:33 2014 -0500

    vcl: Fix DrawMask implementation in OpenGL backend
    
    Change-Id: Idc0bedaba5a4cea351f131d402c2b1093ac1c53c

diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index 339f3c6..ab6b95f 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -406,7 +406,7 @@ bool OpenGLSalGraphicsImpl::CreateMaskProgram( void )
     glBindAttribLocation( mnMaskProgram, GL_ATTRIB_POS, "position" );
     glBindAttribLocation( mnMaskProgram, GL_ATTRIB_TEX, "tex_coord_in" );
     mnMaskUniform = glGetUniformLocation( mnMaskProgram, "sampler" );
-    mnMaskColorUniform = glGetUniformLocation( mnMaskProgram, "mask" );
+    mnMaskColorUniform = glGetUniformLocation( mnMaskProgram, "color" );
 
     CHECK_GL_ERROR();
     return true;
@@ -844,7 +844,7 @@ void OpenGLSalGraphicsImpl::DrawTextureWithMask( OpenGLTexture& rTexture, OpenGL
     CHECK_GL_ERROR();
 }
 
-void OpenGLSalGraphicsImpl::DrawMask( OpenGLTexture& rMask, SalColor nMaskColor, const SalTwoRect& /*pPosAry*/ )
+void OpenGLSalGraphicsImpl::DrawMask( OpenGLTexture& rMask, SalColor nMaskColor, const SalTwoRect& pPosAry )
 {
     if( mnMaskProgram == 0 )
     {
@@ -858,7 +858,10 @@ void OpenGLSalGraphicsImpl::DrawMask( OpenGLTexture& rMask, SalColor nMaskColor,
     glActiveTexture( GL_TEXTURE0 );
     rMask.Bind();
 
-    //DrawTextureRect( rMask, pPosAry );
+    glEnable( GL_BLEND );
+    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+    DrawTextureRect( rMask, pPosAry );
+    glDisable( GL_BLEND );
 
     rMask.Unbind();
     glUseProgram( 0 );
diff --git a/vcl/opengl/maskFragmentShader.glsl b/vcl/opengl/maskFragmentShader.glsl
index 4a8204e..2cc7377 100644
--- a/vcl/opengl/maskFragmentShader.glsl
+++ b/vcl/opengl/maskFragmentShader.glsl
@@ -7,15 +7,15 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-precision mediump float;
 varying vec2 tex_coord;
 uniform sampler2D sampler;
-uniform vec4 color;"
+uniform vec4 color;
 
 void main() {
-   vec4 texel0;
-   texel0 = texture2D(sampler, tex_coord);
-   gl_FragColor = color * texel0.a;
+    vec4 texel0;
+    texel0 = texture2D(sampler, tex_coord);
+    gl_FragColor = color;
+    gl_FragColor.a = 1.0 - texel0.r;
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
commit 2d12d89632e6939b0d34af3b8830cbb2b0257629
Author: Louis-Francis Ratté-Boulianne <lfrb at collabora.com>
Date:   Mon Nov 17 09:15:15 2014 -0500

    vcl: Implement drawing of transformed bitmaps in OpenGL backend
    
    Change-Id: I79717a608f33050b84244e378a6e51bd3be29232

diff --git a/vcl/Package_opengl.mk b/vcl/Package_opengl.mk
index 18c56fc..9151d94 100644
--- a/vcl/Package_opengl.mk
+++ b/vcl/Package_opengl.mk
@@ -21,6 +21,7 @@ $(eval $(call gb_Package_add_files,vcl_opengl_shader,$(LIBO_ETC_FOLDER)/opengl,\
 	solidVertexShader.glsl \
 	textureFragmentShader.glsl \
 	textureVertexShader.glsl \
+	transformedTextureVertexShader.glsl \
 ))
 
 # vim: set noet sw=4 ts=4:
diff --git a/vcl/inc/openglgdiimpl.hxx b/vcl/inc/openglgdiimpl.hxx
index 80d760a..29bc7a2 100644
--- a/vcl/inc/openglgdiimpl.hxx
+++ b/vcl/inc/openglgdiimpl.hxx
@@ -56,6 +56,17 @@ protected:
     GLuint mnTextureProgram;
     GLuint mnSamplerUniform;
 
+    GLuint mnTransformedTextureProgram;
+    GLuint mnTransformedViewportUniform;
+    GLuint mnTransformedTransformUniform;
+    GLuint mnTransformedSamplerUniform;
+
+    GLuint mnTransformedMaskedTextureProgram;
+    GLuint mnTransformedMaskedViewportUniform;
+    GLuint mnTransformedMaskedTransformUniform;
+    GLuint mnTransformedMaskedSamplerUniform;
+    GLuint mnTransformedMaskedMaskUniform;
+
     GLuint mnMaskedTextureProgram;
     GLuint mnMaskedSamplerUniform;
     GLuint mnMaskSamplerUniform;
@@ -79,7 +90,9 @@ protected:
 
     bool CreateSolidProgram( void );
     bool CreateTextureProgram( void );
+    bool CreateTransformedTextureProgram( void );
     bool CreateMaskedTextureProgram( void );
+    bool CreateTransformedMaskedTextureProgram( void );
     bool CreateMaskProgram( void );
     bool CreateLinearGradientProgram( void );
     bool CreateRadialGradientProgram( void );
@@ -103,6 +116,7 @@ public:
     void DrawPolyPolygon( const basegfx::B2DPolyPolygon& rPolyPolygon );
     void DrawTextureRect( OpenGLTexture& rTexture, const SalTwoRect& rPosAry, bool bInverted = false );
     void DrawTexture( OpenGLTexture& rTexture, const SalTwoRect& rPosAry, bool bInverted = false );
+    void DrawTransformedTexture( OpenGLTexture& rTexture, OpenGLTexture& rMask, const basegfx::B2DPoint& rNull, const basegfx::B2DPoint& rX, const basegfx::B2DPoint& rY );
     void DrawAlphaTexture( OpenGLTexture& rTexture, const SalTwoRect& rPosAry, bool bInverted = false, bool pPremultiplied = false );
     void DrawTextureWithMask( OpenGLTexture& rTexture, OpenGLTexture& rMask, const SalTwoRect& rPosAry );
     void DrawMask( OpenGLTexture& rTexture, SalColor nMaskColor, const SalTwoRect& rPosAry );
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index 9ed40b6..339f3c6 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -33,6 +33,8 @@
 #include "salgdi.hxx"
 #include "opengl/salbmp.hxx"
 
+#include <glm/glm.hpp>
+#include <glm/gtc/type_ptr.hpp>
 #include <vector>
 
 #define GL_ATTRIB_POS 0
@@ -72,6 +74,15 @@ OpenGLSalGraphicsImpl::OpenGLSalGraphicsImpl()
     , mnColorUniform(0)
     , mnTextureProgram(0)
     , mnSamplerUniform(0)
+    , mnTransformedTextureProgram(0)
+    , mnTransformedViewportUniform(0)
+    , mnTransformedTransformUniform(0)
+    , mnTransformedSamplerUniform(0)
+    , mnTransformedMaskedTextureProgram(0)
+    , mnTransformedMaskedViewportUniform(0)
+    , mnTransformedMaskedTransformUniform(0)
+    , mnTransformedMaskedSamplerUniform(0)
+    , mnTransformedMaskedMaskUniform(0)
     , mnMaskedTextureProgram(0)
     , mnMaskedSamplerUniform(0)
     , mnMaskSamplerUniform(0)
@@ -338,6 +349,22 @@ bool OpenGLSalGraphicsImpl::CreateTextureProgram( void )
     return true;
 }
 
+bool OpenGLSalGraphicsImpl::CreateTransformedTextureProgram( void )
+{
+    mnTransformedTextureProgram = OpenGLHelper::LoadShaders( "transformedTextureVertexShader", "textureFragmentShader" );
+    if( mnTransformedTextureProgram == 0 )
+        return false;
+
+    glBindAttribLocation( mnTransformedTextureProgram, GL_ATTRIB_POS, "position" );
+    glBindAttribLocation( mnTransformedTextureProgram, GL_ATTRIB_TEX, "tex_coord_in" );
+    mnTransformedViewportUniform = glGetUniformLocation( mnTransformedTextureProgram, "viewport" );
+    mnTransformedTransformUniform = glGetUniformLocation( mnTransformedTextureProgram, "transform" );
+    mnTransformedSamplerUniform = glGetUniformLocation( mnTransformedTextureProgram, "sampler" );
+
+    CHECK_GL_ERROR();
+    return true;
+}
+
 bool OpenGLSalGraphicsImpl::CreateMaskedTextureProgram( void )
 {
     mnMaskedTextureProgram = OpenGLHelper::LoadShaders( "maskedTextureVertexShader", "maskedTextureFragmentShader" );
@@ -353,14 +380,31 @@ bool OpenGLSalGraphicsImpl::CreateMaskedTextureProgram( void )
     return true;
 }
 
+bool OpenGLSalGraphicsImpl::CreateTransformedMaskedTextureProgram( void )
+{
+    mnTransformedMaskedTextureProgram = OpenGLHelper::LoadShaders( "transformedTextureVertexShader", "maskedTextureFragmentShader" );
+    if( mnTransformedMaskedTextureProgram == 0 )
+        return false;
+
+    glBindAttribLocation( mnTransformedMaskedTextureProgram, GL_ATTRIB_POS, "position" );
+    glBindAttribLocation( mnTransformedMaskedTextureProgram, GL_ATTRIB_TEX, "tex_coord_in" );
+    mnTransformedMaskedViewportUniform = glGetUniformLocation( mnTransformedMaskedTextureProgram, "viewport" );
+    mnTransformedMaskedTransformUniform = glGetUniformLocation( mnTransformedMaskedTextureProgram, "transform" );
+    mnTransformedMaskedSamplerUniform = glGetUniformLocation( mnTransformedMaskedTextureProgram, "sampler" );
+    mnTransformedMaskedMaskUniform = glGetUniformLocation( mnTransformedMaskedTextureProgram, "mask" );
+
+    CHECK_GL_ERROR();
+    return true;
+}
+
 bool OpenGLSalGraphicsImpl::CreateMaskProgram( void )
 {
-    mnMaskedTextureProgram = OpenGLHelper::LoadShaders( "maskVertexShader", "maskFragmentShader" );
-    if( mnMaskedTextureProgram == 0 )
+    mnMaskProgram = OpenGLHelper::LoadShaders( "maskVertexShader", "maskFragmentShader" );
+    if( mnMaskProgram == 0 )
         return false;
 
-    glBindAttribLocation( mnTextureProgram, GL_ATTRIB_POS, "position" );
-    glBindAttribLocation( mnTextureProgram, GL_ATTRIB_TEX, "tex_coord_in" );
+    glBindAttribLocation( mnMaskProgram, GL_ATTRIB_POS, "position" );
+    glBindAttribLocation( mnMaskProgram, GL_ATTRIB_TEX, "tex_coord_in" );
     mnMaskUniform = glGetUniformLocation( mnMaskProgram, "sampler" );
     mnMaskColorUniform = glGetUniformLocation( mnMaskProgram, "mask" );
 
@@ -675,6 +719,88 @@ void OpenGLSalGraphicsImpl::DrawTexture( OpenGLTexture& rTexture, const SalTwoRe
     CHECK_GL_ERROR();
 }
 
+void OpenGLSalGraphicsImpl::DrawTransformedTexture(
+    OpenGLTexture& rTexture,
+    OpenGLTexture& rMask,
+    const basegfx::B2DPoint& rNull,
+    const basegfx::B2DPoint& rX,
+    const basegfx::B2DPoint& rY )
+{
+    const basegfx::B2DVector aXRel = rX - rNull;
+    const basegfx::B2DVector aYRel = rY - rNull;
+    const float aValues[] = {
+        (float) aXRel.getX()/rTexture.GetWidth(),  (float) aXRel.getY()/rTexture.GetWidth(),  0, 0,
+        (float) aYRel.getX()/rTexture.GetHeight(), (float) aYRel.getY()/rTexture.GetHeight(), 0, 0,
+        0,                                         0,                                         1, 0,
+        (float) rNull.getX(),                      (float) rNull.getY(),                      0, 1 };
+    glm::mat4 mMatrix = glm::make_mat4( aValues );
+    GLfloat aVertices[8] = {
+        0, (float) rTexture.GetHeight(), 0, 0,
+        (float) rTexture.GetWidth(), 0, (float) rTexture.GetWidth(), (float) rTexture.GetHeight() };
+    GLfloat aTexCoord[8];
+    SalTwoRect aPosAry;
+
+    if( rMask )
+    {
+        if( mnTransformedMaskedTextureProgram == 0 )
+        {
+            if( !CreateTransformedMaskedTextureProgram() )
+                return;
+        }
+        glUseProgram( mnTransformedMaskedTextureProgram );
+        glUniform2f( mnTransformedMaskedViewportUniform, GetWidth(), GetHeight() );
+        glUniformMatrix4fv( mnTransformedMaskedTransformUniform, 1, GL_FALSE, glm::value_ptr( mMatrix ) );
+        glUniform1i( mnTransformedMaskedSamplerUniform, 0 );
+        glUniform1i( mnTransformedMaskedMaskUniform, 1 );
+        glActiveTexture( GL_TEXTURE1 );
+        rMask.Bind();
+        rMask.SetFilter( GL_LINEAR );
+        glEnable( GL_BLEND );
+        glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+    }
+    else
+    {
+        if( mnTransformedTextureProgram == 0 )
+        {
+            if( !CreateTransformedTextureProgram() )
+                return;
+        }
+        glUseProgram( mnTransformedTextureProgram );
+        glUniform2f( mnTransformedViewportUniform, GetWidth(), GetHeight() );
+        glUniformMatrix4fv( mnTransformedTransformUniform, 1, GL_FALSE, glm::value_ptr( mMatrix ) );
+        glUniform1i( mnTransformedSamplerUniform, 0 );
+    }
+
+    glActiveTexture( GL_TEXTURE0 );
+    rTexture.Bind();
+    rTexture.SetFilter( GL_LINEAR );
+    CHECK_GL_ERROR();
+
+    aPosAry.mnSrcX = aPosAry.mnSrcY = 0;
+    aPosAry.mnSrcWidth = rTexture.GetWidth();
+    aPosAry.mnSrcHeight = rTexture.GetHeight();
+    rTexture.GetCoord( aTexCoord, aPosAry );
+    glEnableVertexAttribArray( GL_ATTRIB_TEX );
+    glVertexAttribPointer( GL_ATTRIB_TEX, 2, GL_FLOAT, GL_FALSE, 0, aTexCoord );
+    glEnableVertexAttribArray( GL_ATTRIB_POS );
+    glVertexAttribPointer( GL_ATTRIB_POS, 2, GL_FLOAT, GL_FALSE, 0, &aVertices[0] );
+    glDrawArrays( GL_TRIANGLE_FAN, 0, 4 );
+    glDisableVertexAttribArray( GL_ATTRIB_POS );
+    glDisableVertexAttribArray( GL_ATTRIB_TEX );
+
+    if( rMask )
+    {
+        glDisable( GL_BLEND );
+        glActiveTexture( GL_TEXTURE1 );
+        rMask.Unbind();
+    }
+
+    glActiveTexture( GL_TEXTURE0 );
+    rTexture.Unbind();
+    glUseProgram( 0 );
+    CHECK_GL_ERROR();
+}
+
 void OpenGLSalGraphicsImpl::DrawAlphaTexture( OpenGLTexture& rTexture, const SalTwoRect& rPosAry, bool bInverted, bool bPremultiplied )
 {
     glEnable( GL_BLEND );
@@ -1390,13 +1516,26 @@ bool OpenGLSalGraphicsImpl::drawAlphaBitmap(
 
 /** draw transformed bitmap (maybe with alpha) where Null, X, Y define the coordinate system */
 bool OpenGLSalGraphicsImpl::drawTransformedBitmap(
-            const basegfx::B2DPoint& /*rNull*/,
-            const basegfx::B2DPoint& /*rX*/,
-            const basegfx::B2DPoint& /*rY*/,
-            const SalBitmap& /*rSourceBitmap*/,
-            const SalBitmap* /*pAlphaBitmap*/)
-{
-    return false;
+            const basegfx::B2DPoint& rNull,
+            const basegfx::B2DPoint& rX,
+            const basegfx::B2DPoint& rY,
+            const SalBitmap& rSrcBitmap,
+            const SalBitmap* pAlphaBitmap)
+{
+    const OpenGLSalBitmap& rBitmap = static_cast<const OpenGLSalBitmap&>(rSrcBitmap);
+    const OpenGLSalBitmap* pMaskBitmap = static_cast<const OpenGLSalBitmap*>(pAlphaBitmap);
+    OpenGLTexture& rTexture( rBitmap.GetTexture( maContext ) );
+    OpenGLTexture aMask; // no texture
+
+    if( pMaskBitmap != NULL )
+        aMask = pMaskBitmap->GetTexture( maContext );
+
+    SAL_INFO( "vcl.opengl", "::drawTransformedBitmap" );
+    PreDraw();
+    DrawTransformedTexture( rTexture, aMask, rNull, rX, rY );
+    PostDraw();
+
+    return true;
 }
 
 /** Render solid rectangle with given transparency
diff --git a/vcl/opengl/transformedTextureVertexShader.glsl b/vcl/opengl/transformedTextureVertexShader.glsl
new file mode 100644
index 0000000..51485a0
--- /dev/null
+++ b/vcl/opengl/transformedTextureVertexShader.glsl
@@ -0,0 +1,24 @@
+/* -*- 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/.
+ */
+
+attribute vec4 position;
+attribute vec2 tex_coord_in;
+uniform vec2 viewport;
+uniform mat4 transform;
+varying vec2 tex_coord;
+
+void main() {
+    vec4 pos = transform * position;
+    pos.x = (2.0 * pos.x) / viewport.x - 1.0;
+    pos.y = 1.0 - (2.0 * pos.y / viewport.y);
+    gl_Position = pos;
+    tex_coord = tex_coord_in;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
commit bd14a48e414f4f04cc1b08f5ac29c403f161d69d
Author: Michael Meeks <michael.meeks at collabora.com>
Date:   Mon Nov 17 05:15:13 2014 +0000

    vcl: always use the default windows' GL Context for now to create bitmaps.
    
    Change-Id: Ie20b10656788113709b0b0720d3cae2653639d78

diff --git a/vcl/inc/opengl/salbmp.hxx b/vcl/inc/opengl/salbmp.hxx
index dbb29d8..9995645 100644
--- a/vcl/inc/opengl/salbmp.hxx
+++ b/vcl/inc/opengl/salbmp.hxx
@@ -52,6 +52,8 @@ private:
     int                                 mnBufHeight;
     std::deque< OpenGLSalBitmapOp* >    maPendingOps;
 
+    bool makeCurrent();
+
 public:
     OpenGLSalBitmap();
     virtual ~OpenGLSalBitmap();
diff --git a/vcl/opengl/salbmp.cxx b/vcl/opengl/salbmp.cxx
index 4b5287e..780c268 100644
--- a/vcl/opengl/salbmp.cxx
+++ b/vcl/opengl/salbmp.cxx
@@ -395,7 +395,7 @@ GLuint OpenGLSalBitmap::CreateTexture()
         }
     }
 
-    mpContext->makeCurrent();
+    makeCurrent();
     maTexture = OpenGLTexture (mnBufWidth, mnBufHeight, nFormat, nType, pData );
     SAL_INFO( "vcl.opengl", "Created texture " << maTexture.Id() );
 
@@ -449,7 +449,7 @@ bool OpenGLSalBitmap::ReadTexture()
         return false;
     }
 
-    mpContext->makeCurrent();
+    makeCurrent();
     maTexture.Read( nFormat, nType, pData );
     mnBufWidth = mnWidth;
     mnBufHeight = mnHeight;
@@ -462,6 +462,20 @@ sal_uInt16 OpenGLSalBitmap::GetBitCount() const
     return mnBits;
 }
 
+bool OpenGLSalBitmap::makeCurrent()
+{
+    OpenGLContextProvider *pProvider;
+    pProvider = dynamic_cast< OpenGLContextProvider* >( ImplGetDefaultWindow()->GetGraphics() );
+    if( pProvider == NULL )
+    {
+        SAL_WARN( "vcl.opengl", "Couldn't get default OpenGL context provider" );
+        return false;
+    }
+    mpContext = pProvider->GetOpenGLContext();
+    mpContext->makeCurrent();
+    return true;
+}
+
 BitmapBuffer* OpenGLSalBitmap::AcquireBuffer( bool /*bReadOnly*/ )
 {
     if( !maUserBuffer.get() )
@@ -474,15 +488,9 @@ BitmapBuffer* OpenGLSalBitmap::AcquireBuffer( bool /*bReadOnly*/ )
 
     if( !maPendingOps.empty() )
     {
-        OpenGLContextProvider *pProvider;
-        pProvider = dynamic_cast< OpenGLContextProvider* >( ImplGetDefaultWindow()->GetGraphics() );
-        if( pProvider == NULL )
-        {
-            SAL_WARN( "vcl.opengl", "Couldn't get default OpenGL context provider" );
+        if (!makeCurrent())
             return NULL;
-        }
-        mpContext = pProvider->GetOpenGLContext();
-        mpContext->makeCurrent();
+
         SAL_INFO( "vcl.opengl", "** Creating texture and reading it back immediatly" );
         if( !CreateTexture() || !AllocateUserData() || !ReadTexture() )
             return NULL;
commit dfeaee01a30109883e41f45faf28fc247dadb3b2
Author: Michael Meeks <michael.meeks at collabora.com>
Date:   Mon Nov 17 04:35:29 2014 +0000

    vcl: copyBits should operate on mrParent if no context supplied.
    
    eg. OutputDevice::DrawOutDev:
                mpGraphics->CopyBits( aPosAry, NULL, this, NULL );
    
    Change-Id: I0b041bb5aa6aba573b9f589842084722481cb438

diff --git a/vcl/inc/opengl/win/gdiimpl.hxx b/vcl/inc/opengl/win/gdiimpl.hxx
index 085be79..557e58a 100644
--- a/vcl/inc/opengl/win/gdiimpl.hxx
+++ b/vcl/inc/opengl/win/gdiimpl.hxx
@@ -29,6 +29,7 @@ protected:
     virtual GLfloat GetHeight() const SAL_OVERRIDE;
 
 public:
+    virtual void copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics ) SAL_OVERRIDE;
 
 };
 
diff --git a/vcl/inc/opengl/x11/gdiimpl.hxx b/vcl/inc/opengl/x11/gdiimpl.hxx
index 00eaf8c..a2b863e 100644
--- a/vcl/inc/opengl/x11/gdiimpl.hxx
+++ b/vcl/inc/opengl/x11/gdiimpl.hxx
@@ -32,6 +32,7 @@ protected:
 public:
     // implementation of X11GraphicsImpl
 
+    virtual void copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics ) SAL_OVERRIDE;
     void Init() SAL_OVERRIDE;
     bool FillPixmapFromScreen( X11Pixmap* pPixmap, int nX, int nY ) SAL_OVERRIDE;
     bool RenderPixmapToScreen( X11Pixmap* pPixmap, int nX, int nY ) SAL_OVERRIDE;
diff --git a/vcl/inc/openglgdiimpl.hxx b/vcl/inc/openglgdiimpl.hxx
index dd0b1e3..80d760a 100644
--- a/vcl/inc/openglgdiimpl.hxx
+++ b/vcl/inc/openglgdiimpl.hxx
@@ -216,7 +216,7 @@ public:
 
     // CopyBits and DrawBitmap --> RasterOp and ClipRegion
     // CopyBits() --> pSrcGraphics == NULL, then CopyBits on same Graphics
-    virtual void copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics ) SAL_OVERRIDE;
+    void DoCopyBits( const SalTwoRect& rPosAry, OpenGLSalGraphicsImpl *pSrcImpl );
 
     virtual void drawBitmap( const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap ) SAL_OVERRIDE;
 
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index 8532ba0..9ed40b6 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -1171,9 +1171,9 @@ void OpenGLSalGraphicsImpl::copyArea(
 
 // CopyBits and DrawBitmap --> RasterOp and ClipRegion
 // CopyBits() --> pSrcGraphics == NULL, then CopyBits on same Graphics
-void OpenGLSalGraphicsImpl::copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics )
+void OpenGLSalGraphicsImpl::DoCopyBits( const SalTwoRect& rPosAry, OpenGLSalGraphicsImpl* pSrcImpl )
 {
-    OpenGLSalGraphicsImpl *pImpl = pSrcGraphics ? dynamic_cast< OpenGLSalGraphicsImpl* >(pSrcGraphics->GetImpl()) : NULL;
+    OpenGLSalGraphicsImpl *pImpl = pSrcImpl;
 
     SAL_INFO( "vcl.opengl", "::copyBits" );
 
diff --git a/vcl/opengl/win/gdiimpl.cxx b/vcl/opengl/win/gdiimpl.cxx
index e829ca4..67a192e 100644
--- a/vcl/opengl/win/gdiimpl.cxx
+++ b/vcl/opengl/win/gdiimpl.cxx
@@ -18,6 +18,12 @@ WinOpenGLSalGraphicsImpl::WinOpenGLSalGraphicsImpl(WinSalGraphics& rGraphics):
 {
 }
 
+void WinOpenGLSalGraphicsImpl::copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics )
+{
+    OpenGLSalGraphicsImpl *pImpl = pSrcGraphics ? dynamic_cast< OpenGLSalGraphicsImpl* >(pSrcGraphics->GetImpl()) : static_cast< OpenGLSalGraphicsImpl *>(mrParent.GetImpl());
+    OpenGLSalGraphicsImpl::DoCopyBits( rPosAry, pImpl );
+}
+
 GLfloat WinOpenGLSalGraphicsImpl::GetWidth() const
 {
     if( mrParent.gethWnd() && IsWindow( mrParent.gethWnd() ) )
diff --git a/vcl/opengl/x11/gdiimpl.cxx b/vcl/opengl/x11/gdiimpl.cxx
index 5292038..dcefcc2 100644
--- a/vcl/opengl/x11/gdiimpl.cxx
+++ b/vcl/opengl/x11/gdiimpl.cxx
@@ -81,6 +81,12 @@ void X11OpenGLSalGraphicsImpl::Init()
     }
 }
 
+void X11OpenGLSalGraphicsImpl::copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics )
+{
+    OpenGLSalGraphicsImpl *pImpl = pSrcGraphics ? dynamic_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();


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