Use RED format for ambient occlusion render target

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

diff --git a/source/ambientocclusion.cpp b/source/ambientocclusion.cpp
index 91e10ad7a4f33f4325cc12762fe65a5e2e347148..0079009b513750d3f391019d2529d897b55f6f37 100644 (file)
--- a/source/ambientocclusion.cpp
+++ b/source/ambientocclusion.cpp
@@ -12,7 +12,7 @@ namespace Msp {
 namespace GL {
 
 AmbientOcclusion::AmbientOcclusion(unsigned w, unsigned h, float):
-       occlude_target(w, h, (RENDER_COLOR,RGB)),
+       occlude_target(w, h, (RENDER_COLOR,RED)),
        occlude_shader("ambientocclusion_occlude.glsl"),
        combine_shader("ambientocclusion_combine.glsl"),
        quad(get_fullscreen_quad())
@@ -21,7 +21,7 @@ AmbientOcclusion::AmbientOcclusion(unsigned w, unsigned h, float):
        texturing.attach(2, occlude_target.get_target_texture(RENDER_COLOR));
 
        unsigned seed = 1;
-       rotate_lookup.storage(RGBA, 4, 4);
+       rotate_lookup.storage(RGBA, 4, 4, 1);
        rotate_lookup.set_filter(NEAREST);
        unsigned char data[64];
        for(unsigned i=0; i<16; ++i)
@@ -29,10 +29,10 @@ AmbientOcclusion::AmbientOcclusion(unsigned w, unsigned h, float):
                Geometry::Angle<float> a = Geometry::Angle<float>::from_turns(random(seed));
                unsigned char c = (cos(a)*0.5f+0.5f)*255;
                unsigned char s = (sin(a)*0.5f+0.5f)*255;
-               data[i*3  ] = c;
-               data[i*3+1] = s;
-               data[i*3+2] = 255-s;
-               data[i*3+4] = ((i+i/4)%2)*255;
+               data[i*4  ] = c;
+               data[i*4+1] = s;
+               data[i*4+2] = 255-s;
+               data[i*4+3] = ((i+i/4)%2)*255;
        }
        rotate_lookup.image(0, RGBA, UNSIGNED_BYTE, data);