diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_fx_ssao_frag.glsl')
| -rw-r--r-- | source/blender/gpu/shaders/gpu_shader_fx_ssao_frag.glsl | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_fx_ssao_frag.glsl b/source/blender/gpu/shaders/gpu_shader_fx_ssao_frag.glsl index 5e2512b6a46..494a74dcdf8 100644 --- a/source/blender/gpu/shaders/gpu_shader_fx_ssao_frag.glsl +++ b/source/blender/gpu/shaders/gpu_shader_fx_ssao_frag.glsl @@ -15,7 +15,7 @@ varying vec4 uvcoordsvar; /* ssao_params.x : pixel scale for the ssao radious */ /* ssao_params.y : factor for the ssao darkening */ uniform vec4 ssao_params; -uniform vec4 ssao_sample_params; +uniform vec3 ssao_sample_params; uniform vec4 ssao_color; /* store the view space vectors for the corners of the view frustum here. @@ -23,10 +23,18 @@ uniform vec4 ssao_color; * see http://www.derschmale.com/2014/01/26/reconstructing-positions-from-the-depth-buffer */ uniform vec4 viewvecs[3]; +vec3 calculate_view_space_normal(in vec3 viewposition) +{ + vec3 normal = cross(normalize(dFdx(viewposition)), + ssao_params.w * normalize(dFdy(viewposition))); + normalize(normal); + return normal; +} + float calculate_ssao_factor(float depth) { /* take the normalized ray direction here */ - vec2 rotX = texture2D(jitter_tex, uvcoordsvar.xy * ssao_sample_params.zw).rg; + vec2 rotX = texture2D(jitter_tex, uvcoordsvar.xy * ssao_sample_params.yz).rg; vec2 rotY = vec2(-rotX.y, rotX.x); /* occlusion is zero in full depth */ |