Use a shader for rendering if available

[libs/gltk.git] / source / root.cpp

diff --git a/source/root.cpp b/source/root.cpp
index eaf58194863a961e209f22ee175c90b1ac852aac..8b06f4788f9f4ae45b8837ed63f6c1569b8bc62a 100644 (file)
--- a/source/root.cpp
+++ b/source/root.cpp
@@ -1,4 +1,7 @@
 #include <msp/gl/blend.h>
+#include <msp/gl/extensions/arb_shader_objects.h>
+#include <msp/gl/programbuilder.h>
+#include <msp/gl/uniform.h>
 #include <msp/input/keys.h>
 #include <msp/time/units.h>
 #include <msp/time/utils.h>
@@ -35,6 +38,21 @@ void Root::init(Graphics::Window *window)
        lbl_tooltip = 0;
        tooltip_target = 0;
 
+       camera.set_orthographic(geom.w, geom.h);
+       update_camera();
+
+       if(GL::ARB_shader_objects)
+       {
+               shprog = new GL::Program;
+               GL::ProgramBuilder::StandardFeatures features;
+               features.material = true;
+               features.texture = true;
+               GL::ProgramBuilder(features).add_shaders(*shprog);
+               shprog->link();
+       }
+       else
+               shprog = 0;
+
        update_style();
 
        if(mouse)
@@ -54,6 +72,7 @@ void Root::init(Graphics::Window *window)
 
 Root::~Root()
 {
+       delete shprog;
        if(own_input)
        {
                delete keyboard;
@@ -109,11 +128,10 @@ void Root::tick()
 
 void Root::render() const
 {
-       GL::MatrixStack::projection() = GL::Matrix::ortho_bottomleft(geom.w, geom.h);
-       GL::MatrixStack::modelview() = GL::Matrix();
        GL::Bind bind_blend(GL::Blend::alpha());
 
-       GL::Renderer renderer(0);
+       GL::Renderer renderer(&camera);
+       renderer.set_shader_program(shprog);
        Widget::render(renderer);
 }
 
@@ -231,5 +249,24 @@ void Root::get_pointer(int &x, int &y)
        y = (mouse->get_axis_value(1)*0.5+0.5)*geom.h;
 }
 
+void Root::update_camera()
+{
+       camera.set_position(GL::Vector3(geom.w/2.0f, geom.h/2.0f, geom.h/2.0f));
+       camera.set_depth_clip(geom.h*0.1f, geom.h*0.9f);
+       camera.set_orthographic(geom.w, geom.h);
+}
+
+void Root::on_geometry_change()
+{
+       Panel::on_geometry_change();
+       update_camera();
+}
+
+void Root::on_child_added(Widget &wdg)
+{
+       if(&wdg!=lbl_tooltip)
+               Panel::on_child_added(wdg);
+}
+
 } // namespace GLtk
 } // namespace Msp