482d7ce61b
because that works under wayland out of the box and gtk3 uses it already Change-Id: Iefaac31e325534a81a5389f752804af917c1baef Reviewed-on: https://gerrit.libreoffice.org/31213 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Caolán McNamara <caolanm@redhat.com> Tested-by: Caolán McNamara <caolanm@redhat.com>
120 lines
4.8 KiB
C++
120 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef INCLUDED_VCL_OPENGL_OPENGLHELPER_HXX
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#define INCLUDED_VCL_OPENGL_OPENGLHELPER_HXX
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#include <epoxy/gl.h>
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#include <sal/log.hxx>
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#include <vcl/dllapi.h>
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#include <vcl/bitmapex.hxx>
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#include <rtl/ustring.hxx>
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/// Helper to do a SAL_INFO as well as a GL log.
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#define VCL_GL_INFO(stream) \
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do { \
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if (SAL_DETAIL_ENABLE_LOG_INFO && OpenGLHelper::isVCLOpenGLEnabled()) \
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{ \
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::std::ostringstream detail_stream; \
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detail_stream << stream; \
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OpenGLHelper::debugMsgStream(detail_stream); \
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} \
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} while (false)
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/// Helper to do a SAL_WARN as well as a GL log.
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#define VCL_GL_WARN(stream) \
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do { \
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if (SAL_DETAIL_ENABLE_LOG_INFO && OpenGLHelper::isVCLOpenGLEnabled()) \
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{ \
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::std::ostringstream detail_stream; \
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detail_stream << stream; \
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OpenGLHelper::debugMsgStreamWarn(detail_stream); \
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} \
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} while (false)
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// All member functions static and VCL_DLLPUBLIC. Basically a glorified namespace.
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struct VCL_DLLPUBLIC OpenGLHelper
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{
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OpenGLHelper() = delete; // Should not be instantiated
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public:
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static OString GetDigest(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OString& preamble );
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static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OUString& rGeometryShaderName, const OString& preamble, const OString& rDigest );
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static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OString& preamble, const OString& rDigest );
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static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OUString& rGeometryShaderName);
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static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName);
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/**
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* The caller is responsible for allocate the memory for the RGBA buffer, before call
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* this method. RGBA buffer size is assumed to be 4*width*height.
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* Since OpenGL uses textures flipped relative to BitmapEx storage this method
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* also adds the possibility to mirror the bitmap vertically at the same time.
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**/
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static void ConvertBitmapExToRGBATextureBuffer(const BitmapEx& rBitmapEx, sal_uInt8* o_pRGBABuffer, const bool bFlip = false);
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static BitmapEx ConvertBGRABufferToBitmapEx(const sal_uInt8* const pBuffer, long nWidth, long nHeight);
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static void renderToFile(long nWidth, long nHeight, const OUString& rFileName);
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static const char* GLErrorString(GLenum errorCode);
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/**
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* The caller is responsible for deleting the buffer objects identified by
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* nFramebufferId, nRenderbufferDepthId and nRenderbufferColorId
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* @param nWidth Width of frame
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* @param nHeight Height of frame
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* @param nFramebufferId FrameBuffer ID
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* @param nRenderbufferDepthId RenderBuffer's depth ID
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* @param nRenderbufferColorId RenderBuffer's color ID
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* @param bRenderbuffer true => off-screen rendering, false => rendering to texture
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* This also affects whether to free with glDeleteRenderbuffers or glDeleteTextures
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*/
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static void createFramebuffer(long nWidth, long nHeight, GLuint& nFramebufferId,
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GLuint& nRenderbufferDepthId, GLuint& nRenderbufferColorId, bool bRenderbuffer = true);
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/// Get OpenGL version (needs a context)
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static float getGLVersion();
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static void checkGLError(const char* aFile, size_t nLine);
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/**
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* Insert a glDebugMessage into the queue - helpful for debugging
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* with apitrace to annotate the output and correlate it with code.
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*/
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static void debugMsgPrint(const int nType, const char *pFormat, ...);
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static void debugMsgStream(std::ostringstream const &pStream);
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static void debugMsgStreamWarn(std::ostringstream const &pStream);
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/**
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* checks if the device/driver pair is on our OpenGL blacklist
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*/
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static bool isDeviceBlacklisted();
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/**
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* checks if the system supports all features that are necessary for the OpenGL VCL support
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*/
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static bool supportsVCLOpenGL();
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/**
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* Returns true if VCL has OpenGL rendering enabled
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*/
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static bool isVCLOpenGLEnabled();
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};
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#ifdef SAL_LOG_WARN
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#define CHECK_GL_ERROR() OpenGLHelper::checkGLError(__FILE__, __LINE__)
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#else
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#define CHECK_GL_ERROR() do { } while (false)
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#endif
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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