diff options
Diffstat (limited to 'canvas/source/opengl/ogl_spritedevicehelper.cxx')
| -rw-r--r-- | canvas/source/opengl/ogl_spritedevicehelper.cxx | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/canvas/source/opengl/ogl_spritedevicehelper.cxx b/canvas/source/opengl/ogl_spritedevicehelper.cxx new file mode 100644 index 000000000..8cb0a6934 --- /dev/null +++ b/canvas/source/opengl/ogl_spritedevicehelper.cxx @@ -0,0 +1,549 @@ +/* -*- 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 <sal/config.h> +#include <sal/log.hxx> + +#include <basegfx/matrix/b2dhommatrix.hxx> +#include <basegfx/utils/canvastools.hxx> +#include <basegfx/utils/unopolypolygon.hxx> +#include <com/sun/star/awt/XTopWindow.hpp> +#include <com/sun/star/rendering/XIntegerBitmapColorSpace.hpp> +#include <com/sun/star/uno/Reference.hxx> +#include <toolkit/helper/vclunohelper.hxx> +#include <vcl/canvastools.hxx> +#include <vcl/opengl/OpenGLHelper.hxx> +#include <vcl/syschild.hxx> + +#include "ogl_spritedevicehelper.hxx" +#include "ogl_spritecanvas.hxx" +#include "ogl_canvasbitmap.hxx" +#include "ogl_canvastools.hxx" +#include "ogl_canvascustomsprite.hxx" +#include "ogl_texturecache.hxx" + +using namespace ::com::sun::star; + +static void initContext() +{ + // need the backside for mirror effects + glDisable(GL_CULL_FACE); + + // no perspective, we're 2D + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + // misc preferences + glEnable(GL_POINT_SMOOTH); + glEnable(GL_LINE_SMOOTH); + glEnable(GL_POLYGON_SMOOTH); + glHint(GL_POINT_SMOOTH_HINT,GL_NICEST); + glHint(GL_LINE_SMOOTH_HINT,GL_NICEST); + glHint(GL_POLYGON_SMOOTH_HINT,GL_NICEST); + glShadeModel(GL_FLAT); +} + +static void initTransformation(const ::Size& rSize) +{ + // use whole window + glViewport( 0,0, + static_cast<GLsizei>(rSize.Width()), + static_cast<GLsizei>(rSize.Height()) ); + + // model coordinate system is already in device pixel + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslated(-1.0, 1.0, 0.0); + glScaled( 2.0 / rSize.Width(), + -2.0 / rSize.Height(), + 1.0 ); + + // clear to black + glClearColor(0,0,0,0); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); +} + +namespace oglcanvas +{ + + SpriteDeviceHelper::SpriteDeviceHelper() : + mpSpriteCanvas(nullptr), + mpTextureCache(std::make_shared<TextureCache>()), + mnLinearTwoColorGradientProgram(0), + mnLinearMultiColorGradientProgram(0), + mnRadialTwoColorGradientProgram(0), + mnRadialMultiColorGradientProgram(0), + mnRectangularTwoColorGradientProgram(0), + mnRectangularMultiColorGradientProgram(0), + mxContext(OpenGLContext::Create()) + {} + + SpriteDeviceHelper::~SpriteDeviceHelper() + { mxContext->dispose(); } + + void SpriteDeviceHelper::init( vcl::Window& rWindow, + SpriteCanvas& rSpriteCanvas, + const awt::Rectangle& rViewArea ) + { + mpSpriteCanvas = &rSpriteCanvas; + + rSpriteCanvas.setWindow( + uno::Reference<awt::XWindow2>( + VCLUnoHelper::GetInterface(&rWindow), + uno::UNO_QUERY_THROW) ); + + mxContext->requestLegacyContext(); + mxContext->init(&rWindow); + // init window context + initContext(); + + mnLinearMultiColorGradientProgram = + OpenGLHelper::LoadShaders("dummyVertexShader", "linearMultiColorGradientFragmentShader"); + + mnLinearTwoColorGradientProgram = + OpenGLHelper::LoadShaders("dummyVertexShader", "linearTwoColorGradientFragmentShader"); + + mnRadialMultiColorGradientProgram = + OpenGLHelper::LoadShaders("dummyVertexShader", "radialMultiColorGradientFragmentShader"); + + mnRadialTwoColorGradientProgram = + OpenGLHelper::LoadShaders("dummyVertexShader", "radialTwoColorGradientFragmentShader"); + + mnRectangularMultiColorGradientProgram = + OpenGLHelper::LoadShaders("dummyVertexShader", "rectangularMultiColorGradientFragmentShader"); + + mnRectangularTwoColorGradientProgram = + OpenGLHelper::LoadShaders("dummyVertexShader", "rectangularTwoColorGradientFragmentShader"); + + mxContext->makeCurrent(); + + notifySizeUpdate(rViewArea); + // TODO(E3): check for GL_ARB_imaging extension + } + + void SpriteDeviceHelper::disposing() + { + // release all references + mpSpriteCanvas = nullptr; + mpTextureCache.reset(); + + if( mxContext->isInitialized() ) + { + glDeleteProgram( mnRectangularTwoColorGradientProgram ); + glDeleteProgram( mnRectangularMultiColorGradientProgram ); + glDeleteProgram( mnRadialTwoColorGradientProgram ); + glDeleteProgram( mnRadialMultiColorGradientProgram ); + glDeleteProgram( mnLinearTwoColorGradientProgram ); + glDeleteProgram( mnLinearMultiColorGradientProgram ); + } + } + + geometry::RealSize2D SpriteDeviceHelper::getPhysicalResolution() + { + if( !mxContext->isInitialized() ) + return ::canvas::tools::createInfiniteSize2D(); // we're disposed + + // Map a one-by-one millimeter box to pixel + SystemChildWindow* pChildWindow = mxContext->getChildWindow(); + const MapMode aOldMapMode( pChildWindow->GetMapMode() ); + pChildWindow->SetMapMode( MapMode(MapUnit::MapMM) ); + const Size aPixelSize( pChildWindow->LogicToPixel(Size(1,1)) ); + pChildWindow->SetMapMode( aOldMapMode ); + + return vcl::unotools::size2DFromSize( aPixelSize ); + } + + geometry::RealSize2D SpriteDeviceHelper::getPhysicalSize() + { + if( !mxContext->isInitialized() ) + return ::canvas::tools::createInfiniteSize2D(); // we're disposed + + // Map the pixel dimensions of the output window to millimeter + SystemChildWindow* pChildWindow = mxContext->getChildWindow(); + const MapMode aOldMapMode( pChildWindow->GetMapMode() ); + pChildWindow->SetMapMode( MapMode(MapUnit::MapMM) ); + const Size aLogSize( pChildWindow->PixelToLogic(pChildWindow->GetOutputSizePixel()) ); + pChildWindow->SetMapMode( aOldMapMode ); + + return vcl::unotools::size2DFromSize( aLogSize ); + } + + uno::Reference< rendering::XLinePolyPolygon2D > SpriteDeviceHelper::createCompatibleLinePolyPolygon( + const uno::Reference< rendering::XGraphicDevice >& /*rDevice*/, + const uno::Sequence< uno::Sequence< geometry::RealPoint2D > >& points ) + { + // disposed? + if( !mpSpriteCanvas ) + return uno::Reference< rendering::XLinePolyPolygon2D >(); // we're disposed + + return uno::Reference< rendering::XLinePolyPolygon2D >( + new ::basegfx::unotools::UnoPolyPolygon( + ::basegfx::unotools::polyPolygonFromPoint2DSequenceSequence( points ))); + } + + uno::Reference< rendering::XBezierPolyPolygon2D > SpriteDeviceHelper::createCompatibleBezierPolyPolygon( + const uno::Reference< rendering::XGraphicDevice >& /*rDevice*/, + const uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > >& points ) + { + // disposed? + if( !mpSpriteCanvas ) + return uno::Reference< rendering::XBezierPolyPolygon2D >(); // we're disposed + + return uno::Reference< rendering::XBezierPolyPolygon2D >( + new ::basegfx::unotools::UnoPolyPolygon( + ::basegfx::unotools::polyPolygonFromBezier2DSequenceSequence( points ) ) ); + } + + uno::Reference< rendering::XBitmap > SpriteDeviceHelper::createCompatibleBitmap( + const uno::Reference< rendering::XGraphicDevice >& /*rDevice*/, + const geometry::IntegerSize2D& size ) + { + // disposed? + if( !mpSpriteCanvas ) + return uno::Reference< rendering::XBitmap >(); // we're disposed + + return uno::Reference< rendering::XBitmap >( + new CanvasBitmap( size, + mpSpriteCanvas, + *this ) ); + } + + uno::Reference< rendering::XVolatileBitmap > SpriteDeviceHelper::createVolatileBitmap( + const uno::Reference< rendering::XGraphicDevice >& /*rDevice*/, + const geometry::IntegerSize2D& /*size*/ ) + { + return uno::Reference< rendering::XVolatileBitmap >(); + } + + uno::Reference< rendering::XBitmap > SpriteDeviceHelper::createCompatibleAlphaBitmap( + const uno::Reference< rendering::XGraphicDevice >& /*rDevice*/, + const geometry::IntegerSize2D& size ) + { + // disposed? + if( !mpSpriteCanvas ) + return uno::Reference< rendering::XBitmap >(); // we're disposed + + return uno::Reference< rendering::XBitmap >( + new CanvasBitmap( size, + mpSpriteCanvas, + *this ) ); + } + + uno::Reference< rendering::XVolatileBitmap > SpriteDeviceHelper::createVolatileAlphaBitmap( + const uno::Reference< rendering::XGraphicDevice >& /*rDevice*/, + const geometry::IntegerSize2D& /*size*/ ) + { + return uno::Reference< rendering::XVolatileBitmap >(); + } + + namespace + { + /** Functor providing a StrictWeakOrdering for XSprites (over + priority) + */ + struct SpriteComparator + { + bool operator()( const ::rtl::Reference<CanvasCustomSprite>& rLHS, + const ::rtl::Reference<CanvasCustomSprite>& rRHS ) const + { + const double nPrioL( rLHS->getPriority() ); + const double nPrioR( rRHS->getPriority() ); + + // if prios are equal, tie-break on ptr value + return nPrioL == nPrioR ? rLHS.get() < rRHS.get() : nPrioL < nPrioR; + } + }; + } + + bool SpriteDeviceHelper::showBuffer( bool bIsVisible, SAL_UNUSED_PARAMETER bool /*bUpdateAll*/ ) + { + // hidden or disposed? + if( !bIsVisible || !mxContext->isInitialized() || !mpSpriteCanvas ) + return false; + + mxContext->makeCurrent(); + + SystemChildWindow* pChildWindow = mxContext->getChildWindow(); + const ::Size& rOutputSize = pChildWindow->GetSizePixel(); + initTransformation(rOutputSize); + + // render the actual spritecanvas content + mpSpriteCanvas->renderRecordedActions(); + + // render all sprites (in order of priority) on top of that + std::vector< ::rtl::Reference<CanvasCustomSprite> > aSprites( + maActiveSprites.begin(), + maActiveSprites.end()); + std::sort(aSprites.begin(), + aSprites.end(), + SpriteComparator()); + for( const auto& rSprite : aSprites ) + rSprite->renderSprite(); + + + // frame counter, other info + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslated(-1.0, 1.0, 0.0); + glScaled( 2.0 / rOutputSize.Width(), + -2.0 / rOutputSize.Height(), + 1.0 ); + + const double denominator( maLastUpdate.getElapsedTime() ); + maLastUpdate.reset(); + + const double fps(denominator == 0.0 ? 100.0 : 1.0/denominator); + std::vector<double> aVec { fps, static_cast<double>(maActiveSprites.size()), + static_cast<double>(mpTextureCache->getCacheSize()), + static_cast<double>(mpTextureCache->getCacheMissCount()), + static_cast<double>(mpTextureCache->getCacheHitCount()) }; + renderOSD( aVec, 20 ); + + /* + * TODO: moggi: fix it! + // switch buffer, sync etc. + const unx::Window aXWindow=pChildWindow->GetSystemData()->aWindow; + unx::glXSwapBuffers(reinterpret_cast<unx::Display*>(mpDisplay), + aXWindow); + pChildWindow->Show(); + unx::glXWaitGL(); + XSync( reinterpret_cast<unx::Display*>(mpDisplay), false ); + */ + mxContext->swapBuffers(); + + // flush texture cache, such that it does not build up + // indefinitely. + // TODO: have max cache size/LRU time in config, prune only on + // demand + mpTextureCache->prune(); + + return true; + } + + bool SpriteDeviceHelper::switchBuffer( bool bIsVisible, bool bUpdateAll ) + { + // no difference for VCL canvas + return showBuffer( bIsVisible, bUpdateAll ); + } + + uno::Any SpriteDeviceHelper::isAccelerated() const + { + return css::uno::Any(false); + } + + uno::Any SpriteDeviceHelper::getDeviceHandle() const + { + const SystemChildWindow* pChildWindow = mxContext->getChildWindow(); + const OutputDevice* pDevice = pChildWindow ? pChildWindow->GetOutDev() : nullptr; + return uno::Any(reinterpret_cast<sal_Int64>(pDevice)); + } + + uno::Any SpriteDeviceHelper::getSurfaceHandle() const + { + return uno::Any(); + } + + uno::Reference<rendering::XColorSpace> SpriteDeviceHelper::getColorSpace() const + { + // always the same + return ::canvas::tools::getStdColorSpace(); + } + + void SpriteDeviceHelper::notifySizeUpdate( const awt::Rectangle& rBounds ) + { + if( mxContext->isInitialized() ) + { + SystemChildWindow* pChildWindow = mxContext->getChildWindow(); + pChildWindow->setPosSizePixel( + 0,0,rBounds.Width,rBounds.Height); + } + } + + void SpriteDeviceHelper::dumpScreenContent() const + { + SAL_INFO("canvas.ogl", __func__ ); + } + + void SpriteDeviceHelper::show( const ::rtl::Reference< CanvasCustomSprite >& xSprite ) + { + maActiveSprites.insert(xSprite); + } + + void SpriteDeviceHelper::hide( const ::rtl::Reference< CanvasCustomSprite >& xSprite ) + { + maActiveSprites.erase(xSprite); + } + + static void setupUniforms( unsigned int nProgramId, + const ::basegfx::B2DHomMatrix& rTexTransform ) + { + const GLint nTransformLocation = glGetUniformLocation(nProgramId, + "m_transform" ); + // OGL is column-major + float aTexTransform[] = + { + float(rTexTransform.get(0,0)), float(rTexTransform.get(1,0)), + float(rTexTransform.get(0,1)), float(rTexTransform.get(1,1)), + float(rTexTransform.get(0,2)), float(rTexTransform.get(1,2)) + }; + glUniformMatrix3x2fv(nTransformLocation,1,false,aTexTransform); + } + + static void setupUniforms( unsigned int nProgramId, + const rendering::ARGBColor* pColors, + const uno::Sequence< double >& rStops, + const ::basegfx::B2DHomMatrix& rTexTransform ) + { + glUseProgram(nProgramId); + + GLuint nColorsTexture; + glActiveTexture(GL_TEXTURE0); + glGenTextures(1, &nColorsTexture); + glBindTexture(GL_TEXTURE_1D, nColorsTexture); + + const sal_Int32 nColors=rStops.getLength(); + glTexImage1D( GL_TEXTURE_1D, 0, GL_RGBA, nColors, 0, GL_RGBA, GL_DOUBLE, pColors ); + glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); + glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); + + GLuint nStopsTexture; + glActiveTexture(GL_TEXTURE1); + glGenTextures(1, &nStopsTexture); + glBindTexture(GL_TEXTURE_1D, nStopsTexture); + + glTexImage1D( GL_TEXTURE_1D, 0, GL_ALPHA, nColors, 0, GL_ALPHA, GL_DOUBLE, rStops.getConstArray() ); + glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); + glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); + + const GLint nColorArrayLocation = glGetUniformLocation(nProgramId, + "t_colorArray4d" ); + glUniform1i( nColorArrayLocation, 0 ); // unit 0 + + const GLint nStopArrayLocation = glGetUniformLocation(nProgramId, + "t_stopArray1d" ); + glUniform1i( nStopArrayLocation, 1 ); // unit 1 + + const GLint nNumColorLocation = glGetUniformLocation(nProgramId, + "i_nColors" ); + glUniform1i( nNumColorLocation, nColors-1 ); + + setupUniforms(nProgramId,rTexTransform); + } + + static void setupUniforms( unsigned int nProgramId, + const rendering::ARGBColor& rStartColor, + const rendering::ARGBColor& rEndColor, + const ::basegfx::B2DHomMatrix& rTexTransform ) + { + glUseProgram(nProgramId); + + const GLint nStartColorLocation = glGetUniformLocation(nProgramId, + "v_startColor4d" ); + glUniform4f(nStartColorLocation, + rStartColor.Red, + rStartColor.Green, + rStartColor.Blue, + rStartColor.Alpha); + + const GLint nEndColorLocation = glGetUniformLocation(nProgramId, + "v_endColor4d" ); + glUniform4f(nEndColorLocation, + rEndColor.Red, + rEndColor.Green, + rEndColor.Blue, + rEndColor.Alpha); + + setupUniforms(nProgramId,rTexTransform); + } + + void SpriteDeviceHelper::useLinearGradientShader( const rendering::ARGBColor* pColors, + const uno::Sequence< double >& rStops, + const ::basegfx::B2DHomMatrix& rTexTransform ) + { + if( rStops.getLength() > 2 ) + setupUniforms(mnLinearMultiColorGradientProgram, pColors, rStops, rTexTransform); + else + setupUniforms(mnLinearTwoColorGradientProgram, pColors[0], pColors[1], rTexTransform); + } + + void SpriteDeviceHelper::useRadialGradientShader( const rendering::ARGBColor* pColors, + const uno::Sequence< double >& rStops, + const ::basegfx::B2DHomMatrix& rTexTransform ) + { + if( rStops.getLength() > 2 ) + setupUniforms(mnRadialMultiColorGradientProgram, pColors, rStops, rTexTransform); + else + setupUniforms(mnRadialTwoColorGradientProgram, pColors[0], pColors[1], rTexTransform); + } + + void SpriteDeviceHelper::useRectangularGradientShader( const rendering::ARGBColor* pColors, + const uno::Sequence< double >& rStops, + const ::basegfx::B2DHomMatrix& rTexTransform ) + { + if( rStops.getLength() > 2 ) + setupUniforms(mnRectangularMultiColorGradientProgram, pColors, rStops, rTexTransform); + else + setupUniforms(mnRectangularTwoColorGradientProgram, pColors[0], pColors[1], rTexTransform); + } + + namespace + { + + class BufferContextImpl : public IBufferContext + { + GLuint mnFramebufferId; + GLuint mnDepthId; + GLuint mnTextureId; + + virtual void startBufferRendering() override + { + glBindFramebuffer(GL_FRAMEBUFFER, mnFramebufferId); + } + + virtual void endBufferRendering() override + { + glBindFramebuffer(GL_FRAMEBUFFER, 0); + } + + virtual GLuint getTextureId() override + { + return mnTextureId; + } + + public: + explicit BufferContextImpl(const ::basegfx::B2IVector& rSize) : + mnFramebufferId(0), + mnDepthId(0), + mnTextureId(0) + { + OpenGLHelper::createFramebuffer(rSize.getX(), rSize.getY(), mnFramebufferId, + mnDepthId, mnTextureId); + } + + virtual ~BufferContextImpl() override + { + glDeleteTextures(1, &mnTextureId); + glDeleteRenderbuffers(1, &mnDepthId); + glDeleteFramebuffers(1, &mnFramebufferId); + } + }; + } + + IBufferContextSharedPtr SpriteDeviceHelper::createBufferContext(const ::basegfx::B2IVector& rSize) const + { + return std::make_shared<BufferContextImpl>(rSize); + } + + TextureCache& SpriteDeviceHelper::getTextureCache() const + { + return *mpTextureCache; + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |