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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /include/vcl/opengl/OpenGLHelper.hxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/vcl/opengl/OpenGLHelper.hxx')
-rw-r--r--include/vcl/opengl/OpenGLHelper.hxx124
1 files changed, 124 insertions, 0 deletions
diff --git a/include/vcl/opengl/OpenGLHelper.hxx b/include/vcl/opengl/OpenGLHelper.hxx
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+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_OPENGL_OPENGLHELPER_HXX
+#define INCLUDED_VCL_OPENGL_OPENGLHELPER_HXX
+
+#include <epoxy/gl.h>
+#include <sal/detail/log.h>
+#include <vcl/dllapi.h>
+#include <vcl/bitmapex.hxx>
+
+#include <rtl/ustring.hxx>
+#include <sstream>
+#include <string_view>
+
+/// Helper to do a SAL_INFO as well as a GL log.
+#define VCL_GL_INFO(stream) \
+ do { \
+ if (SAL_DETAIL_ENABLE_LOG_INFO) \
+ { \
+ ::std::ostringstream detail_stream; \
+ detail_stream << stream; \
+ OpenGLHelper::debugMsgStream(detail_stream); \
+ } \
+ } while (false)
+
+/// Helper to do a SAL_WARN as well as a GL log.
+#define VCL_GL_WARN(stream) \
+ do { \
+ if (SAL_DETAIL_ENABLE_LOG_INFO) \
+ { \
+ ::std::ostringstream detail_stream; \
+ detail_stream << stream; \
+ OpenGLHelper::debugMsgStreamWarn(detail_stream); \
+ } \
+ } while (false)
+
+// All member functions static and VCL_DLLPUBLIC. Basically a glorified namespace.
+struct VCL_DLLPUBLIC OpenGLHelper
+{
+ OpenGLHelper() = delete; // Should not be instantiated
+
+public:
+
+#if defined _WIN32
+ static OString GetDigest(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, std::string_view preamble );
+#endif
+
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OUString& rGeometryShaderName, std::string_view preamble, std::string_view rDigest );
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, std::string_view preamble, std::string_view rDigest );
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OUString& rGeometryShaderName);
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName);
+
+ /**
+ * The caller is responsible for allocating the memory for the buffer before calling
+ * this method. The buffer size is assumed to be 4*width*height and the format
+ * to be OptimalBufferFormat().
+ **/
+ static BitmapEx ConvertBufferToBitmapEx(const sal_uInt8* const pBuffer, tools::Long nWidth, tools::Long nHeight);
+ /**
+ * Returns the optimal buffer format for OpenGL (GL_BGRA or GL_RGBA).
+ **/
+ static GLenum OptimalBufferFormat();
+ static void renderToFile(tools::Long nWidth, tools::Long nHeight, const OUString& rFileName);
+
+ static const char* GLErrorString(GLenum errorCode);
+
+ /**
+ * The caller is responsible for deleting the buffer objects identified by
+ * nFramebufferId, nRenderbufferDepthId and nRenderbufferColorId.
+ * This create a buffer for rendering to texture and should be freed with
+ * glDeleteTextures.
+ *
+ * @param nWidth Width of frame
+ * @param nHeight Height of frame
+ * @param nFramebufferId FrameBuffer ID
+ * @param nRenderbufferDepthId RenderBuffer's depth ID
+ * @param nRenderbufferColorId RenderBuffer's color ID
+ */
+ static void createFramebuffer(tools::Long nWidth, tools::Long nHeight, GLuint& nFramebufferId,
+ GLuint& nRenderbufferDepthId, GLuint& nRenderbufferColorId);
+
+ /// Get OpenGL version (needs a context)
+ static float getGLVersion();
+
+ static void checkGLError(const char* aFile, size_t nLine);
+
+ /**
+ * Insert a glDebugMessage into the queue - helpful for debugging
+ * with apitrace to annotate the output and correlate it with code.
+ */
+#if defined __GNUC__
+ __attribute__ ((format (printf, 2, 3)))
+#endif
+ static void debugMsgPrint(const int nType, const char *pFormat, ...);
+ static void debugMsgStream(std::ostringstream const &pStream);
+ static void debugMsgStreamWarn(std::ostringstream const &pStream);
+
+ /**
+ * checks if the device/driver pair is on our OpenGL denylist
+ */
+ static bool isDeviceDenylisted();
+
+ /**
+ * checks if the system supports all features that are necessary for the OpenGL support
+ */
+ static bool supportsOpenGL();
+};
+
+#ifdef SAL_LOG_WARN
+#define CHECK_GL_ERROR() OpenGLHelper::checkGLError(__FILE__, __LINE__)
+#else
+#define CHECK_GL_ERROR() do { } while (false)
+#endif
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */