FGFS-4.1/OpenSceneGraph
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Added shader for GL3/GLES/GL2/GL2

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This commit is contained in:
Robert Osfield 2017-03-20 10:31:58 +00:00
parent 4498945b98
commit e0592b6d11
1 changed files with 72 additions and 0 deletions
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72
src/osgViewer/StatsHandler.cpp
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@ -28,6 +28,55 @@
namespace osgViewer
{
#define FIXED_FUNCTION defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
#define SHADERS_GL3 (defined(OSG_GL3_AVAILABLE) || defined(OSG_GLES3_AVAILABLE))
#define SHADERS_GL2 !FIXED_FUNCTION && !SHADERS_GL3
#if SHADERS_GL3
static const char* gl3_StatsVertexShader = {
"#version 330 core\n"
"in vec4 osg_Vertex;\n"
"in vec4 osg_Color;\n"
"uniform mat4 osg_ModelViewProjectionMatrix;\n"
"out vec4 vertexColor;\n"
"void main(void)\n"
"{\n"
" gl_Position = osg_ModelViewProjectionMatrix * osg_Vertex;\n"
" vertexColor = osg_Color; \n"
"}\n"
};
static const char* gl3_StatsFragmentShader = {
"#version 330 core\n"
"in vec4 vertexColor;\n"
"out vec4 color;\n"
"void main(void)\n"
"{\n"
" gl_FragColor = vertexColor;\n"
"}\n"
};
#endif
#if SHADERS_GL2
static const char* gl2_StatsVertexShader = {
"varying vec4 vertexColor;\n"
"void main(void)\n"
"{\n"
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
" vertexColor = gl_Color;\n"
"}\n"
};
static const char* gl2_StatsFragmentShader = {
"varying vec4 vertexColor;\n"
"void main(void)\n"
"{\n"
" gl_FragColor = vertexColor;\n"
"}\n"
};
#endif
StatsHandler::StatsHandler():
_keyEventTogglesOnScreenStats('s'),
@ -49,10 +98,33 @@ StatsHandler::StatsHandler():
_characterSize(20.0f),
_lineHeight(1.5f)
{
OSG_NOTICE<<"StatsHandler::StatsHandler()"<<std::endl;
_camera = new osg::Camera;
_camera->getOrCreateStateSet()->setGlobalDefaults();
_camera->setRenderer(new Renderer(_camera.get()));
_camera->setProjectionResizePolicy(osg::Camera::FIXED);
#if SHADERS_GL3
OSG_INFO<<"StatsHandler::StatsHandler() Setting up GL3 compatible shaders"<<std::endl;
osg::ref_ptr<osg::Program> program = new osg::Program;
program->addShader(new osg::Shader(osg::Shader::VERTEX, gl3_StatsVertexShader));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, gl3_StatsFragmentShader));
_camera->getOrCreateStateSet()->setAttributeAndModes(program.get());
#elif SHADERS_GL2
OSG_INFO<<"StatsHandler::StatsHandler() Setting up GL2 compatible shaders"<<std::endl;
osg::ref_ptr<osg::Program> program = new osg::Program;
program->addShader(new osg::Shader(osg::Shader::VERTEX, gl2_StatsVertexShader));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, gl2_StatsFragmentShader));
_camera->getOrCreateStateSet()->setAttributeAndModes(program.get());
#else
OSG_INFO<<"StatsHandler::StatsHandler() Fixed pipeline"<<std::endl;
#endif
}
void StatsHandler::collectWhichCamerasToRenderStatsFor(osgViewer::ViewerBase* viewer, osgViewer::ViewerBase::Cameras& cameras)