diff options
Diffstat (limited to 'indra')
| -rw-r--r-- | indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl | 63 |
1 files changed, 58 insertions, 5 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl index a89bc6f211..1b13bc8836 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl @@ -109,14 +109,67 @@ vec4 terrain_texture(sampler2D tex, TerrainCoord terrain_coord) // *NOTE: Bottom face has not been tested vec3 terrain_texture_normal(sampler2D tex, TerrainCoord terrain_coord) { - vec3 x = _t_texture_n(tex, terrain_coord[0].zw, sign(vary_vertex_normal.x)); + float sharpness = TERRAIN_TRIPLANAR_BLEND_FACTOR; + vec3 weight = pow(abs(vary_vertex_normal), vec3(sharpness)); + float threshold = 0.01; + vec3 significant = max(vec3(0), sign(weight - threshold)); + int sample_type = (int(significant.x) << 2) | + (int(significant.y) << 1) | + (int(significant.z) << 0); + + #define SAMPLE_X 1 << 2 + #define SAMPLE_Y 1 << 1 + #define SAMPLE_Z 1 << 0 + #define terrain_coord_x terrain_coord[0].zw + #define terrain_coord_y terrain_coord[1].xy + #define terrain_coord_z terrain_coord[0].xy + vec3 x; + vec3 y; + vec3 z; + switch (sample_type) + { + case SAMPLE_X | SAMPLE_Y | SAMPLE_Z: + x = _t_texture_n(tex, terrain_coord_x, sign(vary_vertex_normal.x)); + y = _t_texture_n(tex, terrain_coord_y, sign(vary_vertex_normal.y)); + z = _t_texture_n(tex, terrain_coord_z, sign(vary_vertex_normal.z)); + break; + case SAMPLE_X | SAMPLE_Y: + x = _t_texture_n(tex, terrain_coord_x, sign(vary_vertex_normal.x)); + y = _t_texture_n(tex, terrain_coord_y, sign(vary_vertex_normal.y)); + z = vec3(0); + break; + case SAMPLE_X | SAMPLE_Z: + x = _t_texture_n(tex, terrain_coord_x, sign(vary_vertex_normal.x)); + y = vec3(0); + z = _t_texture_n(tex, terrain_coord_z, sign(vary_vertex_normal.z)); + break; + case SAMPLE_Y | SAMPLE_Z: + x = vec3(0); + y = _t_texture_n(tex, terrain_coord_y, sign(vary_vertex_normal.y)); + z = _t_texture_n(tex, terrain_coord_z, sign(vary_vertex_normal.z)); + break; + case SAMPLE_X: + x = _t_texture_n(tex, terrain_coord_x, sign(vary_vertex_normal.x)); + y = vec3(0); + z = vec3(0); + break; + case SAMPLE_Y: + x = vec3(0); + y = _t_texture_n(tex, terrain_coord_y, sign(vary_vertex_normal.y)); + z = vec3(0); + break; + case SAMPLE_Z: + default: + x = vec3(0); + y = vec3(0); + z = _t_texture_n(tex, terrain_coord_z, sign(vary_vertex_normal.z)); + break; + } + + // *HACK: Transform normals according to orientation of the UVs x.xy = vec2(-x.y, x.x); - vec3 y = _t_texture_n(tex, terrain_coord[1].xy, sign(vary_vertex_normal.y)); y.xy = -y.xy; - vec3 z = _t_texture_n(tex, terrain_coord[0].xy, sign(vary_vertex_normal.z)); - float sharpness = TERRAIN_TRIPLANAR_BLEND_FACTOR; - vec3 weight = pow(abs(vary_vertex_normal), vec3(sharpness)); return ((x * weight.x) + (y * weight.y) + (z * weight.z)) / (weight.x + weight.y + weight.z); } #elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1 |