Separate abstract pixel compositions from concrete pixel formats

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

diff --git a/source/environmentmap.cpp b/source/environmentmap.cpp
index 95e2c4394c809a8c05be4515159b2da4fdc02d84..f4000c768cd2f3c77e8462e37655d4f10b3ed066 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 {
 
@@ -10,12 +13,15 @@ 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);
-       env_tex.set_min_filter(LINEAR);
-       depth_buf.storage(DEPTH_COMPONENT, size, size);
+       env_tex.storage(RGB8, size, 1);
+       Sampler &env_samp = env_tex.get_default_sampler();
+       env_samp.set_wrap(CLAMP_TO_EDGE);
+       env_samp.set_min_filter(LINEAR);
+       depth_buf.storage(DEPTH_COMPONENT32F, size, size);
        for(unsigned i=0; i<6; ++i)
        {
                fbo[i].attach(COLOR_ATTACHMENT0, env_tex, TextureCube::enumerate_faces(i), 0);
@@ -26,7 +32,6 @@ EnvironmentMap::EnvironmentMap(unsigned s, Renderable &r, Renderable &e):
        camera.set_field_of_view(Geometry::Angle<float>::right());
        camera.set_aspect_ratio(1);
        camera.set_depth_clip(0.1, 100);
-
 }
 
 void EnvironmentMap::set_depth_clip(float n, float f)
@@ -34,6 +39,17 @@ 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)
@@ -41,6 +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();
@@ -58,9 +82,9 @@ void EnvironmentMap::setup_frame(Renderer &renderer)
        {
                TextureCubeFace face = TextureCube::enumerate_faces(i);
                fbo[i].bind();
-               fbo[i].clear(COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
-               camera.set_look_direction(env_tex.get_face_direction(face));
-               camera.set_up_direction(env_tex.get_t_direction(face));
+               fbo[i].clear();
+               camera.set_look_direction(TextureCube::get_face_direction(face));
+               camera.set_up_direction(TextureCube::get_t_direction(face));
                renderer.set_camera(camera);
                renderer.render(environment);
        }