77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
/* OpenSceneGraph example, osgemscripten.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef OSGEMSCRIPTEN_FUNCTIONS_H
|
|
#define OSGEMSCRIPTEN_FUNCTIONS_H
|
|
|
|
#include <osg/Notify>
|
|
|
|
// Convert NotifySeverity enum value to string.
|
|
std::string logLevelToString(osg::NotifySeverity severity)
|
|
{
|
|
switch (severity)
|
|
{
|
|
case osg::DEBUG_FP:
|
|
// Verbose.
|
|
return "V";
|
|
case osg::DEBUG_INFO:
|
|
// Debug.
|
|
return "D";
|
|
case osg::NOTICE:
|
|
case osg::INFO:
|
|
// Info.
|
|
return "I";
|
|
case osg::WARN:
|
|
// Warning.
|
|
return "W";
|
|
case osg::FATAL:
|
|
case osg::ALWAYS:
|
|
// Error.
|
|
return "E";
|
|
}
|
|
}
|
|
|
|
#include <osg/Program>
|
|
|
|
// Fragment shader to display everything in red colour.
|
|
static const char shaderFragment[] =
|
|
"void main() { \n"
|
|
" gl_FragColor = vec4(0.5, 0.3, 0.3, 1.0);\n"
|
|
"} \n";
|
|
// Geometry shader to pass geometry vertices to fragment shader.
|
|
static const char shaderVertex[] =
|
|
"void main() { \n"
|
|
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; \n"
|
|
"} \n";
|
|
|
|
osg::Program *createShaderProgram(
|
|
const std::string &vertexShader,
|
|
const std::string &fragmentShader)
|
|
{
|
|
// Load shaders.
|
|
osg::Shader *vs = new osg::Shader(osg::Shader::VERTEX, vertexShader);
|
|
osg::Shader *fs = new osg::Shader(osg::Shader::FRAGMENT, fragmentShader);
|
|
// Compile shaders and compose shader program.
|
|
osg::Program *prog = new osg::Program;
|
|
prog->addShader(vs);
|
|
prog->addShader(fs);
|
|
return prog;
|
|
}
|
|
|
|
#endif // OSGEMSCRIPTEN_FUNCTIONS_H
|