Mercurial > hg > orthanc-stone
view Framework/OpenGL/OpenGLShader.cpp @ 1213:86a8266b8888 broker
moving the scene from IViewport to ViewportController
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Dec 2019 17:54:10 +0100 |
parents | a7351ad54960 |
children | 2d8ab34c8c91 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2019 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "OpenGLShader.h" #include <Core/OrthancException.h> namespace OrthancStone { namespace OpenGL { static GLuint CompileShader(GLenum type, const std::string& source) { // Create shader object const GLchar* sourceString[1]; GLint sourceStringLengths[1]; sourceString[0] = source.c_str(); sourceStringLengths[0] = static_cast<GLint>(source.length()); GLuint shader = glCreateShader(type); ORTHANC_OPENGL_CHECK("glCreateShader"); if (shader == 0) { throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "Cannot create an OpenGL shader"); } else { // Assign and compile the source to the shader object glShaderSource(shader, 1, sourceString, sourceStringLengths); ORTHANC_OPENGL_CHECK("glShaderSource"); glCompileShader(shader); ORTHANC_OPENGL_CHECK("glCompileShader"); // Check if there were errors int infoLen = 0; glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen); ORTHANC_OPENGL_CHECK("glGetShaderiv"); if (infoLen > 1) // Might be equal to 1, which amounts to no error { std::string infoLog; infoLog.resize(infoLen + 1); glGetShaderInfoLog(shader, infoLen, NULL, &infoLog[0]); ORTHANC_OPENGL_CHECK("glGetShaderInfoLog"); ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteShader"); glDeleteShader(shader); ORTHANC_OPENGL_CHECK("glDeleteShader"); throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "Error while creating an OpenGL shader: " + infoLog); } else { return shader; } } } OpenGLShader::OpenGLShader(GLenum type, const std::string& source) { shader_ = CompileShader(type, source); isValid_ = true; } OpenGLShader::~OpenGLShader() { try { if (isValid_) { ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteShader"); glDeleteShader(shader_); ORTHANC_OPENGL_CHECK("glDeleteShader"); } } catch (const Orthanc::OrthancException& e) { if (e.HasDetails()) { LOG(ERROR) << "OrthancException in ~OpenGLShader: " << e.What() << " Details: " << e.GetDetails(); } else { LOG(ERROR) << "OrthancException in ~OpenGLShader: " << e.What(); } } catch (const std::exception& e) { LOG(ERROR) << "std::exception in ~OpenGLShader: " << e.what(); } catch (...) { LOG(ERROR) << "Unknown exception in ~OpenGLShader"; } } GLuint OpenGLShader::Release() { if (isValid_) { isValid_ = false; return shader_; } else { LOG(ERROR) << "OpenGLShader::Release(): (!isValid_)"; throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); } } } }