diff options
Diffstat (limited to 'drivers/gles3/shaders/subsurf_scattering.glsl')
| -rw-r--r-- | drivers/gles3/shaders/subsurf_scattering.glsl | 126 |
1 files changed, 68 insertions, 58 deletions
diff --git a/drivers/gles3/shaders/subsurf_scattering.glsl b/drivers/gles3/shaders/subsurf_scattering.glsl index 8873443727..20c3b7473f 100644 --- a/drivers/gles3/shaders/subsurf_scattering.glsl +++ b/drivers/gles3/shaders/subsurf_scattering.glsl @@ -17,36 +17,36 @@ void main() { //#define QUALIFIER uniform // some guy on the interweb says it may be faster with this #define QUALIFIER const + #ifdef USE_25_SAMPLES const int kernel_size=25; - QUALIFIER vec2 kernel[25] = vec2[] ( -vec2(0.099654,0.0), -vec2(0.001133,-3.0), -vec2(0.002316,-2.52083), -vec2(0.00445,-2.08333), -vec2(0.008033,-1.6875), -vec2(0.013627,-1.33333), -vec2(0.021724,-1.02083), -vec2(0.032542,-0.75), -vec2(0.04581,-0.520833), -vec2(0.0606,-0.333333), -vec2(0.075333,-0.1875), -vec2(0.088001,-0.0833333), -vec2(0.096603,-0.0208333), -vec2(0.096603,0.0208333), -vec2(0.088001,0.0833333), -vec2(0.075333,0.1875), -vec2(0.0606,0.333333), -vec2(0.04581,0.520833), -vec2(0.032542,0.75), -vec2(0.021724,1.02083), -vec2(0.013627,1.33333), -vec2(0.008033,1.6875), -vec2(0.00445,2.08333), -vec2(0.002316,2.52), -vec2(0.001133,3.0) + vec2(0.530605, 0.0), + vec2(0.000973794, -3.0), + vec2(0.00333804, -2.52083), + vec2(0.00500364, -2.08333), + vec2(0.00700976, -1.6875), + vec2(0.0094389, -1.33333), + vec2(0.0128496, -1.02083), + vec2(0.017924, -0.75), + vec2(0.0263642, -0.520833), + vec2(0.0410172, -0.333333), + vec2(0.0493588, -0.1875), + vec2(0.0402784, -0.0833333), + vec2(0.0211412, -0.0208333), + vec2(0.0211412, 0.0208333), + vec2(0.0402784, 0.0833333), + vec2(0.0493588, 0.1875), + vec2(0.0410172, 0.333333), + vec2(0.0263642, 0.520833), + vec2(0.017924, 0.75), + vec2(0.0128496, 1.02083), + vec2(0.0094389, 1.33333), + vec2(0.00700976, 1.6875), + vec2(0.00500364, 2.08333), + vec2(0.00333804, 2.52083), + vec2(0.000973794, 3.0) ); #endif //USE_25_SAMPLES @@ -56,23 +56,23 @@ vec2(0.001133,3.0) const int kernel_size=17; QUALIFIER vec2 kernel[17] = vec2[]( -vec2(0.197417,0.0), -vec2(0.000078,-2.0), -vec2(0.000489,-1.53125), -vec2(0.002403,-1.125), -vec2(0.009245,-0.78125), -vec2(0.027835,-0.5), -vec2(0.065592,-0.28125), -vec2(0.12098,-0.125), -vec2(0.17467,-0.03125), -vec2(0.17467,0.03125), -vec2(0.12098,0.125), -vec2(0.065592,0.28125), -vec2(0.027835,0.5), -vec2(0.009245,0.78125), -vec2(0.002403,1.125), -vec2(0.000489,1.53125), -vec2(0.000078,2.0) + vec2(0.536343, 0.0), + vec2(0.00317394, -2.0), + vec2(0.0100386, -1.53125), + vec2(0.0144609, -1.125), + vec2(0.0216301, -0.78125), + vec2(0.0347317, -0.5), + vec2(0.0571056, -0.28125), + vec2(0.0582416, -0.125), + vec2(0.0324462, -0.03125), + vec2(0.0324462, 0.03125), + vec2(0.0582416, 0.125), + vec2(0.0571056, 0.28125), + vec2(0.0347317, 0.5), + vec2(0.0216301, 0.78125), + vec2(0.0144609, 1.125), + vec2(0.0100386, 1.53125), + vec2(0.00317394,2.0) ); #endif //USE_17_SAMPLES @@ -82,23 +82,24 @@ vec2(0.000078,2.0) const int kernel_size=11; -QUALIFIER vec2 kernel[kernel_size] = vec2[]( -vec2(0.198596,0.0), -vec2(0.0093,-2.0), -vec2(0.028002,-1.28), -vec2(0.065984,-0.72), -vec2(0.121703,-0.32), -vec2(0.175713,-0.08), -vec2(0.175713,0.08), -vec2(0.121703,0.32), -vec2(0.065984,0.72), -vec2(0.028002,1.28), -vec2(0.0093,2.0) +QUALIFIER vec4 kernel[11] = vec4[]( + vec4(0.560479, 0.0), + vec4(0.00471691, -2.0), + vec4(0.0192831, -1.28), + vec4(0.03639, -0.72), + vec4(0.0821904, -0.32), + vec4(0.0771802, -0.08), + vec4(0.0771802, 0.08), + vec4(0.0821904, 0.32), + vec4(0.03639, 0.72), + vec4(0.0192831, 1.28), + vec4(0.00471691,2.0) ); #endif //USE_11_SAMPLES + uniform float max_radius; uniform float camera_z_far; uniform float camera_z_near; @@ -126,12 +127,16 @@ void main() { // Fetch linear depth of current pixel: float depth = texture(source_depth, uv_interp).r * 2.0 - 1.0; +#ifdef USE_ORTHOGONAL_PROJECTION + depth = ((depth + (camera_z_far + camera_z_near)/(camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near))/2.0; + float scale = unit_size; //remember depth is negative by default in OpenGL +#else depth = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - depth * (camera_z_far - camera_z_near)); + float scale = unit_size / depth; //remember depth is negative by default in OpenGL +#endif - float scale = unit_size / depth; //remember depth is negative by default in OpenGL - // Calculate the final step to fetch the surrounding pixels: vec2 step = max_radius * scale * dir; step *= strength; // Modulate it using the alpha channel. @@ -153,9 +158,14 @@ void main() { #ifdef ENABLE_FOLLOW_SURFACE // If the difference in depth is huge, we lerp color back to "colorM": float depth_cmp = texture(source_depth, offset).r *2.0 - 1.0; + +#ifdef USE_ORTHOGONAL_PROJECTION + depth_cmp = ((depth_cmp + (camera_z_far + camera_z_near)/(camera_z_far - camera_z_near)) * (camera_z_far - camera_z_near))/2.0; +#else depth_cmp = 2.0 * camera_z_near * camera_z_far / (camera_z_far + camera_z_near - depth_cmp * (camera_z_far - camera_z_near)); +#endif - float s = clamp(300.0f * distance * + float s = clamp(300.0f * scale * max_radius * abs(depth - depth_cmp),0.0,1.0); color = mix(color, base_color.rgb, s); #endif |