Allow the maximum mipmap level of a texture to be specified

[libs/gl.git] / source / environmentmap.cpp

diff --git a/source/environmentmap.cpp b/source/environmentmap.cpp
index 94ae5150a7aee552a12bf2519c44e8733e59cae0..9c4df092481789d270669450b18f21b6ff71f1e4 100644 (file)
--- a/source/environmentmap.cpp
+++ b/source/environmentmap.cpp
@@ -1,8 +1,11 @@
+#include <algorithm>
 #include <cmath>
 #include "environmentmap.h"
 #include "renderer.h"
 #include "texunit.h"
 
+using namespace std;
+
 namespace Msp {
 namespace GL {
 
@@ -10,7 +13,9 @@ EnvironmentMap::EnvironmentMap(unsigned s, Renderable &r, Renderable &e):
        Effect(r),
        size(s),
        environment(e),
-       rendered(false)
+       rendered(false),
+       update_interval(1),
+       update_delay(0)
 {
        env_tex.storage(RGB, size);
        env_tex.set_wrap(CLAMP_TO_EDGE);
@@ -23,13 +28,28 @@ EnvironmentMap::EnvironmentMap(unsigned s, Renderable &r, Renderable &e):
                fbo[i].require_complete();
        }
 
-       // XXX Make the depth range configurable
        camera.set_field_of_view(Geometry::Angle<float>::right());
-       camera.set_aspect(1);
+       camera.set_aspect_ratio(1);
        camera.set_depth_clip(0.1, 100);
 
 }
 
+void EnvironmentMap::set_depth_clip(float n, float f)
+{
+       camera.set_depth_clip(n, f);
+}
+
+void EnvironmentMap::set_update_interval(unsigned i)
+{
+       update_interval = i;
+       update_delay = min(update_delay, update_interval-1);
+}
+
+void EnvironmentMap::queue_update()
+{
+       update_delay = 0;
+}
+
 void EnvironmentMap::setup_frame(Renderer &renderer)
 {
        if(rendered)
@@ -37,6 +57,14 @@ void EnvironmentMap::setup_frame(Renderer &renderer)
 
        rendered = true;
        renderable.setup_frame(renderer);
+
+       if(update_delay)
+       {
+               if(update_interval)
+                       --update_delay;
+               return;
+       }
+       update_delay = update_interval-1;
        environment.setup_frame(renderer);
 
        const Matrix *matrix = renderable.get_matrix();