something

1 files changed, 28 insertions, 0 deletions

diff --git a/advanced_lighting/7.bloom/shaders/test_blur.frag b/advanced_lighting/7.bloom/shaders/test_blur.frag
new file mode 100644
index 0000000..8d7ee9a
--- /dev/null
+++ b/advanced_lighting/7.bloom/shaders/test_blur.frag
@@ -0,0 +1,28 @@
+#version 330 core
+
+in vert_t {
+    vec2 tex_coords;
+} vert;
+
+out vec4 frag_color;
+
+uniform sampler2D colorbuffer;
+
+uniform float weights[5] = float[](0.2270270270, 0.1945945946, 0.1216216216, 0.0540540541, 0.0162162162);
+
+void main()
+{
+    vec2 texture_offset = 1.0 / textureSize(colorbuffer, 0);
+    vec3 result = texture(colorbuffer, vert.tex_coords).rgb * weights[0];
+    for (int x = 1; x < weights.length(); x++) {
+        vec2 offset = vec2(texture_offset.x * x, 0.0f);
+        result += texture(colorbuffer, vert.tex_coords + offset).rgb * weights[x];
+        result += texture(colorbuffer, vert.tex_coords - offset).rgb * weights[x];
+    }
+    for (int y = 1; y < weights.length(); y++) {
+        vec2 offset = vec2(0.0f, texture_offset.y * y);
+        result += texture(colorbuffer, vert.tex_coords + offset).rgb * weights[y];
+        result += texture(colorbuffer, vert.tex_coords - offset).rgb * weights[y];
+    }
+    frag_color = vec4(result, 1.0);
+}