mirror of
https://github.com/OpenSpace/OpenSpace.git
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bb3db7ada7
* Cleanup * CMake cleanups * Update current year * Update copyright header * Use script to return list of all modules * Update credits, license and ghoul
112 lines
4.2 KiB
C++
112 lines
4.2 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2019 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/cefwebgui/include/guirenderhandler.h>
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#include <openspace/engine/globalscallbacks.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <ghoul/logging/logmanager.h>
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#include <ghoul/opengl/programobject.h>
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#include <ghoul/opengl/textureunit.h>
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namespace {
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constexpr const char* _loggerCat = "WebGUI:RenderHandler";
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} // namespace
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namespace openspace {
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GUIRenderHandler::GUIRenderHandler() {
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LDEBUG("Initializing CEF GL environment...");
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_programObject = ghoul::opengl::ProgramObject::Build(
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"WebGUICEFProgram",
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absPath("${MODULE_CEFWEBGUI}/shaders/gui_vs.glsl"),
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absPath("${MODULE_CEFWEBGUI}/shaders/gui_fs.glsl")
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);
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float data[] = {
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-1.0f, -1.0f, -1.0f,
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1.0f, 1.0f, -1.0f,
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1.0f, -1.0f, -1.0f,
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1.0f, 1.0f, 1.0f
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};
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glGenVertexArrays(1, &_vao);
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glBindVertexArray(_vao);
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glGenBuffers(1, &_vbo);
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glGenTextures(1, &_texture);
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glBindBuffer(GL_ARRAY_BUFFER, _vbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(data), data, GL_STATIC_DRAW);
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), nullptr);
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glBindVertexArray(0);
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LDEBUG("Initializing CEF GL environment... done!");
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}
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GUIRenderHandler::~GUIRenderHandler() {
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_programObject = nullptr;
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glDeleteVertexArrays(1, &_vao);
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glDeleteBuffers(1, &_vbo);
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}
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void GUIRenderHandler::draw() {
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if (!_programObject) {
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return;
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}
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if (!isTextureReady()) {
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return;
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}
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if (_programObject->isDirty()) {
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_programObject->rebuildFromFile();
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}
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updateTexture();
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glEnable(GL_BLEND);
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glBlendEquation(GL_FUNC_ADD);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glDisable(GL_DEPTH_TEST);
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glDisable(GL_CULL_FACE);
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_programObject->activate();
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ghoul::opengl::TextureUnit unit;
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unit.activate();
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glBindTexture(GL_TEXTURE_2D, _texture);
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_programObject->setUniform("tex", unit);
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glBindVertexArray(_vao);
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glDrawArrays(GL_TRIANGLES, 0, 6);
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glBindVertexArray(0);
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_programObject->deactivate();
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glEnable(GL_CULL_FACE);
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}
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void GUIRenderHandler::render() {}
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} // namespace openspace
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