added a few missing lines

opengl-test-two/main.cpp

@@ -186,6 +186,9 @@ GLuint WriteTexture(int textw, int texth){
     if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
         return false;
 
+    // Render to our framebuffer
+    glBindFramebuffer(GL_FRAMEBUFFER, FramebufferName);
+    glViewport(0, 0, textw, texth);
 }
 
 

opengl-test-two/trimap.fragmentshader

@@ -4,7 +4,8 @@
 in vec2 UV;
 
 // Ouput data
-out vec3 color;
+//out vec3 color;
+layout(location = 0) out vec3 color;
 
 // Values that stay constant for the whole mesh.
 uniform sampler2D myTextureSampler;