diff options
Diffstat (limited to 'client/shaders/object_shader/opengl_vertex.glsl')
| -rw-r--r-- | client/shaders/object_shader/opengl_vertex.glsl | 56 |
1 files changed, 29 insertions, 27 deletions
diff --git a/client/shaders/object_shader/opengl_vertex.glsl b/client/shaders/object_shader/opengl_vertex.glsl index 185551c58..ff0067302 100644 --- a/client/shaders/object_shader/opengl_vertex.glsl +++ b/client/shaders/object_shader/opengl_vertex.glsl @@ -105,33 +105,35 @@ void main(void) #ifdef ENABLE_DYNAMIC_SHADOWS - vec3 nNormal = normalize(vNormal); - cosLight = dot(nNormal, -v_LightDirection); - - // Calculate normal offset scale based on the texel size adjusted for - // curvature of the SM texture. This code must be change together with - // getPerspectiveFactor or any light-space transformation. - vec3 eyeToVertex = worldPosition - eyePosition + cameraOffset; - // Distance from the vertex to the player - float distanceToPlayer = length(eyeToVertex - v_LightDirection * dot(eyeToVertex, v_LightDirection)) / f_shadowfar; - // perspective factor estimation according to the - float perspectiveFactor = distanceToPlayer * bias0 + bias1; - float texelSize = f_shadowfar * perspectiveFactor * perspectiveFactor / - (f_textureresolution * bias1 - perspectiveFactor * bias0); - float slopeScale = clamp(pow(1.0 - cosLight*cosLight, 0.5), 0.0, 1.0); - normalOffsetScale = texelSize * slopeScale; - - if (f_timeofday < 0.2) { - adj_shadow_strength = f_shadow_strength * 0.5 * - (1.0 - mtsmoothstep(0.18, 0.2, f_timeofday)); - } else if (f_timeofday >= 0.8) { - adj_shadow_strength = f_shadow_strength * 0.5 * - mtsmoothstep(0.8, 0.83, f_timeofday); - } else { - adj_shadow_strength = f_shadow_strength * - mtsmoothstep(0.20, 0.25, f_timeofday) * - (1.0 - mtsmoothstep(0.7, 0.8, f_timeofday)); + if (f_shadow_strength > 0.0) { + vec3 nNormal = normalize(vNormal); + cosLight = dot(nNormal, -v_LightDirection); + + // Calculate normal offset scale based on the texel size adjusted for + // curvature of the SM texture. This code must be change together with + // getPerspectiveFactor or any light-space transformation. + vec3 eyeToVertex = worldPosition - eyePosition + cameraOffset; + // Distance from the vertex to the player + float distanceToPlayer = length(eyeToVertex - v_LightDirection * dot(eyeToVertex, v_LightDirection)) / f_shadowfar; + // perspective factor estimation according to the + float perspectiveFactor = distanceToPlayer * bias0 + bias1; + float texelSize = f_shadowfar * perspectiveFactor * perspectiveFactor / + (f_textureresolution * bias1 - perspectiveFactor * bias0); + float slopeScale = clamp(pow(1.0 - cosLight*cosLight, 0.5), 0.0, 1.0); + normalOffsetScale = texelSize * slopeScale; + + if (f_timeofday < 0.2) { + adj_shadow_strength = f_shadow_strength * 0.5 * + (1.0 - mtsmoothstep(0.18, 0.2, f_timeofday)); + } else if (f_timeofday >= 0.8) { + adj_shadow_strength = f_shadow_strength * 0.5 * + mtsmoothstep(0.8, 0.83, f_timeofday); + } else { + adj_shadow_strength = f_shadow_strength * + mtsmoothstep(0.20, 0.25, f_timeofday) * + (1.0 - mtsmoothstep(0.7, 0.8, f_timeofday)); + } + f_normal_length = length(vNormal); } - f_normal_length = length(vNormal); #endif } |