X-Git-Url: https://gitweb.ps.run/subsurface_scattering/blobdiff_plain/e03792c2d5620ca07ac50717062df846927027c0..c99ecda7bed596922125f6b1ef1ef2ae8f27703e:/shaders/fbo_frag.glsl

diff --git a/shaders/fbo_frag.glsl b/shaders/fbo_frag.glsl
index e199245..f92483e 100644
--- a/shaders/fbo_frag.glsl
+++ b/shaders/fbo_frag.glsl
@@ -16,19 +16,18 @@ void main()
     if (renderState == 0) {
         FragColor = texture(shadowmapTexture, TexCoords);
     }
-    // stencil buffer
-    else if (renderState == 1 || texture(irradianceTexture, TexCoords).rgb == vec3(0, 0, 0)) {
+    else if (renderState == 1) {
         FragColor = texture(irradianceTexture, TexCoords);
     }
     else if (renderState == 2) {
-        FragColor = texture(shadowmapTexture, TexCoords) * texture(irradianceTexture, TexCoords);
-    }
-    else if (renderState == 3) {
+        // sample calculated irradiance
+        // using Gaussian kernel to approximate light spread
         vec4 result = vec4(0, 0, 0, 1);
         for (int i = 0; i < 13; i++) {
-            float oneX = 1.0/screenWidth;
-            float oneY = 1.0/screenHeight;
-            vec4 sample = texture(irradianceTexture, TexCoords + samplePositions[i] * vec2(oneX, oneY));
+            vec2 sampleCoords = TexCoords + samplePositions[i] * vec2(1.0/screenWidth, 1.0/screenHeight);
+            //vec4 sample = texture(irradianceTexture, sampleCoords)
+            //            * texture(shadowmapTexture, sampleCoords);
+            vec4 sample = texture(irradianceTexture, sampleCoords);
             vec4 weight = vec4(sampleWeights[i], 1);
             result += sample * weight;
         }