I have been using an old version of glsl a while ago. Now i am trying to get the new glsl to work on cinder 0.9.

Can somebody explain to me what i have to change to get this code to run? (I am not familiar with how I should use glsl without the predefined variables like gl_TexCoord and so on... And I honestly don't really get how to use the C++ functions on the cinder side )

Thank you very much in advance . This is my code:

Cinder:

1. #include "cinder/app/App.h"
2. #include "cinder/app/RendererGl.h"
3. #include "cinder/gl/gl.h"
4. 
   
5. using namespace ci;
6. using namespace ci::app;
7. using namespace std;
8. 
   
9. class GLSLTestApp : public App {
10.   public:
11. void setup() override;
12. void update() override;
13. void draw() override;
14.     
15.     ci::gl::GlslProgRef shader;
16. };
17. 
    
18. void GLSLTestApp::setup(){
19.     auto format = gl::GlslProg::Format().vertex(loadResource("pass.vs")).fragment(loadResource("test.fs"));
20.     shader = gl::GlslProg::create(format);
21. 
    
22. }
23. 
    
24. void GLSLTestApp::update(){
25. }
26. 
    
27. void GLSLTestApp::draw(){
28.       gl::clear( Color( 0, 0, 0 ) );
29.     
30.     
31.     gl::color(1, 1, 1, 1.0);
32.     gl::ScopedGlslProg glslProg(shader);
33.     
34.     gl::drawSolidRect(Rectf(10, 10, 400, 400));
35. }
36. 
    
37. CINDER_APP( GLSLTestApp, RendererGl )

1. #version 400 core
2. 
   
3. //uniform sampler2D tex0;
4. 
   
5. in vec4 inPosition;
6. in vec3 inColor;
7. 
   
8. out vec3 vColor;
9. 
   
10. 
    
11. void main(){
12.     vColor = inColor;
13. }

1. #version 400 core
2. 
   
3. in vec3 vColor;
4. out vec4 outColor;
5. 
   
6. 
   
7. void main(){
8.     outColor = vec4(vColor, 1.0);
9. }