diff options
Diffstat (limited to 'servers/rendering/renderer_rd/shaders')
8 files changed, 134 insertions, 60 deletions
diff --git a/servers/rendering/renderer_rd/shaders/effects/bokeh_dof.glsl b/servers/rendering/renderer_rd/shaders/effects/bokeh_dof.glsl index 0438671dd2..0b43af7738 100644 --- a/servers/rendering/renderer_rd/shaders/effects/bokeh_dof.glsl +++ b/servers/rendering/renderer_rd/shaders/effects/bokeh_dof.glsl @@ -30,7 +30,7 @@ layout(set = 1, binding = 0) uniform sampler2D source_bokeh; #ifdef MODE_GEN_BLUR_SIZE float get_depth_at_pos(vec2 uv) { - float depth = textureLod(source_depth, uv, 0.0).x; + float depth = textureLod(source_depth, uv, 0.0).x * 2.0 - 1.0; if (params.orthogonal) { depth = ((depth + (params.z_far + params.z_near) / (params.z_far - params.z_near)) * (params.z_far - params.z_near)) / 2.0; } else { diff --git a/servers/rendering/renderer_rd/shaders/effects/bokeh_dof_raster.glsl b/servers/rendering/renderer_rd/shaders/effects/bokeh_dof_raster.glsl index a3b3938ee9..a06cacfabe 100644 --- a/servers/rendering/renderer_rd/shaders/effects/bokeh_dof_raster.glsl +++ b/servers/rendering/renderer_rd/shaders/effects/bokeh_dof_raster.glsl @@ -52,7 +52,7 @@ layout(set = 2, binding = 0) uniform sampler2D original_weight; #ifdef MODE_GEN_BLUR_SIZE float get_depth_at_pos(vec2 uv) { - float depth = textureLod(source_depth, uv, 0.0).x; + float depth = textureLod(source_depth, uv, 0.0).x * 2.0 - 1.0; if (params.orthogonal) { depth = ((depth + (params.z_far + params.z_near) / (params.z_far - params.z_near)) * (params.z_far - params.z_near)) / 2.0; } else { diff --git a/servers/rendering/renderer_rd/shaders/environment/volumetric_fog_process.glsl b/servers/rendering/renderer_rd/shaders/environment/volumetric_fog_process.glsl index e74cfad65c..6f79b9e771 100644 --- a/servers/rendering/renderer_rd/shaders/environment/volumetric_fog_process.glsl +++ b/servers/rendering/renderer_rd/shaders/environment/volumetric_fog_process.glsl @@ -377,7 +377,7 @@ void main() { for (uint i = 0; i < params.directional_light_count; i++) { vec3 shadow_attenuation = vec3(1.0); - if (directional_lights.data[i].shadow_enabled) { + if (directional_lights.data[i].shadow_opacity > 0.001) { float depth_z = -view_pos.z; vec4 pssm_coord; @@ -486,7 +486,7 @@ void main() { vec3 light = omni_lights.data[light_index].color; - if (omni_lights.data[light_index].shadow_enabled) { + if (omni_lights.data[light_index].shadow_opacity > 0.001) { //has shadow vec4 uv_rect = omni_lights.data[light_index].atlas_rect; vec2 flip_offset = omni_lights.data[light_index].direction.xy; @@ -572,7 +572,7 @@ void main() { vec3 light = spot_lights.data[light_index].color; - if (spot_lights.data[light_index].shadow_enabled) { + if (spot_lights.data[light_index].shadow_opacity > 0.001) { //has shadow vec4 uv_rect = spot_lights.data[light_index].atlas_rect; vec2 flip_offset = spot_lights.data[light_index].direction.xy; diff --git a/servers/rendering/renderer_rd/shaders/light_data_inc.glsl b/servers/rendering/renderer_rd/shaders/light_data_inc.glsl index 61c8488a05..799f7087b6 100644 --- a/servers/rendering/renderer_rd/shaders/light_data_inc.glsl +++ b/servers/rendering/renderer_rd/shaders/light_data_inc.glsl @@ -15,7 +15,7 @@ struct LightData { //this structure needs to be as packed as possible mediump float cone_attenuation; mediump float cone_angle; mediump float specular_amount; - bool shadow_enabled; + mediump float shadow_opacity; highp vec4 atlas_rect; // rect in the shadow atlas highp mat4 shadow_matrix; @@ -60,7 +60,7 @@ struct DirectionalLightData { highp float softshadow_angle; highp float soft_shadow_scale; bool blend_splits; - bool shadow_enabled; + mediump float shadow_opacity; highp float fade_from; highp float fade_to; uvec2 pad; diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl index 22058b3a06..6b4e4a5a16 100644 --- a/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl +++ b/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl @@ -15,11 +15,11 @@ layout(location = 0) in vec3 vertex_attrib; //only for pure render depth when normal is not used #ifdef NORMAL_USED -layout(location = 1) in vec3 normal_attrib; +layout(location = 1) in vec2 normal_attrib; #endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) -layout(location = 2) in vec4 tangent_attrib; +layout(location = 2) in vec2 tangent_attrib; #endif #if defined(COLOR_USED) @@ -58,6 +58,13 @@ layout(location = 10) in uvec4 bone_attrib; layout(location = 11) in vec4 weight_attrib; #endif +vec3 oct_to_vec3(vec2 e) { + vec3 v = vec3(e.xy, 1.0 - abs(e.x) - abs(e.y)); + float t = max(-v.z, 0.0); + v.xy += t * -sign(v.xy); + return v; +} + /* Varyings */ layout(location = 0) out vec3 vertex_interp; @@ -231,12 +238,13 @@ void vertex_shader(in uint instance_index, in bool is_multimesh, in SceneData sc vec3 vertex = vertex_attrib; #ifdef NORMAL_USED - vec3 normal = normal_attrib * 2.0 - 1.0; + vec3 normal = oct_to_vec3(normal_attrib * 2.0 - 1.0); #endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) - vec3 tangent = tangent_attrib.xyz * 2.0 - 1.0; - float binormalf = tangent_attrib.a * 2.0 - 1.0; + vec2 signed_tangent_attrib = tangent_attrib * 2.0 - 1.0; + vec3 tangent = oct_to_vec3(vec2(signed_tangent_attrib.x, abs(signed_tangent_attrib.y) * 2.0 - 1.0)); + float binormalf = sign(signed_tangent_attrib.y); vec3 binormal = normalize(cross(normal, tangent) * binormalf); #endif @@ -988,8 +996,10 @@ void fragment_shader(in SceneData scene_data) { vec3 anisotropic_normal = cross(anisotropic_tangent, anisotropic_direction); vec3 bent_normal = normalize(mix(normal, anisotropic_normal, abs(anisotropy) * clamp(5.0 * roughness, 0.0, 1.0))); vec3 ref_vec = reflect(-view, bent_normal); + ref_vec = mix(ref_vec, bent_normal, roughness * roughness); #else vec3 ref_vec = reflect(-view, normal); + ref_vec = mix(ref_vec, normal, roughness * roughness); #endif float horizon = min(1.0 + dot(ref_vec, normal), 1.0); @@ -1046,6 +1056,7 @@ void fragment_shader(in SceneData scene_data) { ambient_light *= attenuation; specular_light *= attenuation; + ref_vec = mix(ref_vec, n, clearcoat_roughness * clearcoat_roughness); float horizon = min(1.0 + dot(ref_vec, normal), 1.0); ref_vec = scene_data.radiance_inverse_xform * ref_vec; float roughness_lod = mix(0.001, 0.1, clearcoat_roughness) * MAX_ROUGHNESS_LOD; @@ -1203,6 +1214,7 @@ void fragment_shader(in SceneData scene_data) { uint index1 = instances.data[instance_index].gi_offset & 0xFFFF; vec3 ref_vec = normalize(reflect(-view, normal)); + ref_vec = mix(ref_vec, normal, roughness * roughness); //find arbitrary tangent and bitangent, then build a matrix vec3 v0 = abs(normal.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(0.0, 1.0, 0.0); vec3 tangent = normalize(cross(v0, normal)); @@ -1302,6 +1314,18 @@ void fragment_shader(in SceneData scene_data) { item_to = subgroupBroadcastFirst(subgroupMax(item_to)); #endif +#ifdef LIGHT_ANISOTROPY_USED + // https://google.github.io/filament/Filament.html#lighting/imagebasedlights/anisotropy + vec3 anisotropic_direction = anisotropy >= 0.0 ? binormal : tangent; + vec3 anisotropic_tangent = cross(anisotropic_direction, view); + vec3 anisotropic_normal = cross(anisotropic_tangent, anisotropic_direction); + vec3 bent_normal = normalize(mix(normal, anisotropic_normal, abs(anisotropy) * clamp(5.0 * roughness, 0.0, 1.0))); +#else + vec3 bent_normal = normal; +#endif + vec3 ref_vec = normalize(reflect(-view, bent_normal)); + ref_vec = mix(ref_vec, bent_normal, roughness * roughness); + for (uint i = item_from; i < item_to; i++) { uint mask = cluster_buffer.data[cluster_reflection_offset + i]; mask &= cluster_get_range_clip_mask(i, item_min, item_max); @@ -1324,16 +1348,8 @@ void fragment_shader(in SceneData scene_data) { if (!bool(reflections.data[reflection_index].mask & instances.data[instance_index].layer_mask)) { continue; //not masked } -#ifdef LIGHT_ANISOTROPY_USED - // https://google.github.io/filament/Filament.html#lighting/imagebasedlights/anisotropy - vec3 anisotropic_direction = anisotropy >= 0.0 ? binormal : tangent; - vec3 anisotropic_tangent = cross(anisotropic_direction, view); - vec3 anisotropic_normal = cross(anisotropic_tangent, anisotropic_direction); - vec3 bent_normal = normalize(mix(normal, anisotropic_normal, abs(anisotropy) * clamp(5.0 * roughness, 0.0, 1.0))); -#else - vec3 bent_normal = normal; -#endif - reflection_process(reflection_index, view, vertex, bent_normal, roughness, ambient_light, specular_light, ambient_accum, reflection_accum); + + reflection_process(reflection_index, vertex, ref_vec, normal, roughness, ambient_light, specular_light, ambient_accum, reflection_accum); } } @@ -1417,7 +1433,7 @@ void fragment_shader(in SceneData scene_data) { float shadow = 1.0; - if (directional_lights.data[i].shadow_enabled) { + if (directional_lights.data[i].shadow_opacity > 0.001) { float depth_z = -vertex.z; vec3 light_dir = directional_lights.data[i].direction; vec3 base_normal_bias = normalize(normal_interp) * (1.0 - max(0.0, dot(light_dir, -normalize(normal_interp)))); @@ -1626,7 +1642,7 @@ void fragment_shader(in SceneData scene_data) { #ifdef LIGHT_TRANSMITTANCE_USED float transmittance_z = transmittance_depth; - if (directional_lights.data[i].shadow_enabled) { + if (directional_lights.data[i].shadow_opacity > 0.001) { float depth_z = -vertex.z; if (depth_z < directional_lights.data[i].shadow_split_offsets.x) { @@ -1681,6 +1697,8 @@ void fragment_shader(in SceneData scene_data) { } else { shadow = float(shadow1 >> ((i - 4) * 8) & 0xFF) / 255.0; } + + shadow = shadow * directional_lights.data[i].shadow_opacity + 1.0 - directional_lights.data[i].shadow_opacity; #endif blur_shadow(shadow); diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl index e27c81eaea..7299bb0576 100644 --- a/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl +++ b/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl @@ -395,7 +395,7 @@ float get_omni_attenuation(float distance, float inv_range, float decay) { float light_process_omni_shadow(uint idx, vec3 vertex, vec3 normal) { #ifndef SHADOWS_DISABLED - if (omni_lights.data[idx].shadow_enabled) { + if (omni_lights.data[idx].shadow_opacity > 0.001) { // there is a shadowmap vec2 texel_size = scene_data_block.data.shadow_atlas_pixel_size; vec4 base_uv_rect = omni_lights.data[idx].atlas_rect; @@ -498,6 +498,7 @@ float light_process_omni_shadow(uint idx, vec3 vertex, vec3 normal) { } shadow /= float(sc_penumbra_shadow_samples); + shadow = mix(1.0, shadow, omni_lights.data[idx].shadow_opacity); } else { //no blockers found, so no shadow @@ -516,7 +517,7 @@ float light_process_omni_shadow(uint idx, vec3 vertex, vec3 normal) { vec2 pos = shadow_sample.xy / shadow_sample.z; float depth = shadow_len - omni_lights.data[idx].shadow_bias; depth *= omni_lights.data[idx].inv_radius; - shadow = sample_omni_pcf_shadow(shadow_atlas, omni_lights.data[idx].soft_shadow_scale / shadow_sample.z, pos, uv_rect, flip_offset, depth); + shadow = mix(1.0, sample_omni_pcf_shadow(shadow_atlas, omni_lights.data[idx].soft_shadow_scale / shadow_sample.z, pos, uv_rect, flip_offset, depth), omni_lights.data[idx].shadow_opacity); } return shadow; @@ -674,7 +675,7 @@ void light_process_omni(uint idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 v float light_process_spot_shadow(uint idx, vec3 vertex, vec3 normal) { #ifndef SHADOWS_DISABLED - if (spot_lights.data[idx].shadow_enabled) { + if (spot_lights.data[idx].shadow_opacity > 0.001) { vec3 light_rel_vec = spot_lights.data[idx].position - vertex; float light_length = length(light_rel_vec); vec3 spot_dir = spot_lights.data[idx].direction; @@ -735,6 +736,7 @@ float light_process_spot_shadow(uint idx, vec3 vertex, vec3 normal) { } shadow /= float(sc_penumbra_shadow_samples); + shadow = mix(1.0, shadow, spot_lights.data[idx].shadow_opacity); } else { //no blockers found, so no shadow @@ -743,7 +745,7 @@ float light_process_spot_shadow(uint idx, vec3 vertex, vec3 normal) { } else { //hard shadow vec3 shadow_uv = vec3(splane.xy * spot_lights.data[idx].atlas_rect.zw + spot_lights.data[idx].atlas_rect.xy, splane.z); - shadow = sample_pcf_shadow(shadow_atlas, spot_lights.data[idx].soft_shadow_scale * scene_data_block.data.shadow_atlas_pixel_size, shadow_uv); + shadow = mix(1.0, sample_pcf_shadow(shadow_atlas, spot_lights.data[idx].soft_shadow_scale * scene_data_block.data.shadow_atlas_pixel_size, shadow_uv), spot_lights.data[idx].shadow_opacity); } return shadow; @@ -872,7 +874,7 @@ void light_process_spot(uint idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 v diffuse_light, specular_light); } -void reflection_process(uint ref_index, vec3 view, vec3 vertex, vec3 normal, float roughness, vec3 ambient_light, vec3 specular_light, inout vec4 ambient_accum, inout vec4 reflection_accum) { +void reflection_process(uint ref_index, vec3 vertex, vec3 ref_vec, vec3 normal, float roughness, vec3 ambient_light, vec3 specular_light, inout vec4 ambient_accum, inout vec4 reflection_accum) { vec3 box_extents = reflections.data[ref_index].box_extents; vec3 local_pos = (reflections.data[ref_index].local_matrix * vec4(vertex, 1.0)).xyz; @@ -880,8 +882,6 @@ void reflection_process(uint ref_index, vec3 view, vec3 vertex, vec3 normal, flo return; } - vec3 ref_vec = normalize(reflect(-view, normal)); - vec3 inner_pos = abs(local_pos / box_extents); float blend = max(inner_pos.x, max(inner_pos.y, inner_pos.z)); //make blend more rounded diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl index 26d0de46c2..0960533917 100644 --- a/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl +++ b/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl @@ -16,11 +16,11 @@ layout(location = 0) in vec3 vertex_attrib; //only for pure render depth when normal is not used #ifdef NORMAL_USED -layout(location = 1) in vec3 normal_attrib; +layout(location = 1) in vec2 normal_attrib; #endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) -layout(location = 2) in vec4 tangent_attrib; +layout(location = 2) in vec2 tangent_attrib; #endif #if defined(COLOR_USED) @@ -59,6 +59,13 @@ layout(location = 10) in uvec4 bone_attrib; layout(location = 11) in vec4 weight_attrib; #endif +vec3 oct_to_vec3(vec2 e) { + vec3 v = vec3(e.xy, 1.0 - abs(e.x) - abs(e.y)); + float t = max(-v.z, 0.0); + v.xy += t * -sign(v.xy); + return v; +} + /* Varyings */ layout(location = 0) highp out vec3 vertex_interp; @@ -229,12 +236,13 @@ void main() { vec3 vertex = vertex_attrib; #ifdef NORMAL_USED - vec3 normal = normal_attrib * 2.0 - 1.0; + vec3 normal = oct_to_vec3(normal_attrib * 2.0 - 1.0); #endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) - vec3 tangent = tangent_attrib.xyz * 2.0 - 1.0; - float binormalf = tangent_attrib.a * 2.0 - 1.0; + vec3 signed_tangent_attrib = tangent_attrib * 2.0 - 1.0; + vec3 tangent = oct_to_vec3(vec2(signed_tangent_attrib.x, abs(signed_tangent_attrib.y) * 2.0 - 1.0)); + float binormalf = sign(signed_tangent_attrib.y); vec3 binormal = normalize(cross(normal, tangent) * binormalf); #endif @@ -889,8 +897,10 @@ void main() { vec3 anisotropic_normal = cross(anisotropic_tangent, anisotropic_direction); vec3 bent_normal = normalize(mix(normal, anisotropic_normal, abs(anisotropy) * clamp(5.0 * roughness, 0.0, 1.0))); vec3 ref_vec = reflect(-view, bent_normal); + ref_vec = mix(ref_vec, bent_normal, roughness * roughness); #else vec3 ref_vec = reflect(-view, normal); + ref_vec = mix(ref_vec, normal, roughness * roughness); #endif float horizon = min(1.0 + dot(ref_vec, normal), 1.0); ref_vec = scene_data.radiance_inverse_xform * ref_vec; @@ -940,6 +950,7 @@ void main() { vec3 n = normalize(normal_interp); // We want to use geometric normal, not normal_map float NoV = max(dot(n, view), 0.0001); vec3 ref_vec = reflect(-view, n); + ref_vec = mix(ref_vec, n, clearcoat_roughness * clearcoat_roughness); // The clear coat layer assumes an IOR of 1.5 (4% reflectance) float Fc = clearcoat * (0.04 + 0.96 * SchlickFresnel(NoV)); float attenuation = 1.0 - Fc; @@ -1036,6 +1047,19 @@ void main() { vec4 ambient_accum = vec4(0.0, 0.0, 0.0, 0.0); uint reflection_indices = draw_call.reflection_probes.x; + +#ifdef LIGHT_ANISOTROPY_USED + // https://google.github.io/filament/Filament.html#lighting/imagebasedlights/anisotropy + vec3 anisotropic_direction = anisotropy >= 0.0 ? binormal : tangent; + vec3 anisotropic_tangent = cross(anisotropic_direction, view); + vec3 anisotropic_normal = cross(anisotropic_tangent, anisotropic_direction); + vec3 bent_normal = normalize(mix(normal, anisotropic_normal, abs(anisotropy) * clamp(5.0 * roughness, 0.0, 1.0))); +#else + vec3 bent_normal = normal; +#endif + vec3 ref_vec = normalize(reflect(-view, bent_normal)); + ref_vec = mix(ref_vec, bent_normal, roughness * roughness); + for (uint i = 0; i < 8; i++) { uint reflection_index = reflection_indices & 0xFF; if (i == 4) { @@ -1047,16 +1071,8 @@ void main() { if (reflection_index == 0xFF) { break; } -#ifdef LIGHT_ANISOTROPY_USED - // https://google.github.io/filament/Filament.html#lighting/imagebasedlights/anisotropy - vec3 anisotropic_direction = anisotropy >= 0.0 ? binormal : tangent; - vec3 anisotropic_tangent = cross(anisotropic_direction, view); - vec3 anisotropic_normal = cross(anisotropic_tangent, anisotropic_direction); - vec3 bent_normal = normalize(mix(normal, anisotropic_normal, abs(anisotropy) * clamp(5.0 * roughness, 0.0, 1.0))); -#else - vec3 bent_normal = normal; -#endif - reflection_process(reflection_index, view, vertex, bent_normal, roughness, ambient_light, specular_light, ambient_accum, reflection_accum); + + reflection_process(reflection_index, vertex, ref_vec, bent_normal, roughness, ambient_light, specular_light, ambient_accum, reflection_accum); } if (reflection_accum.a > 0.0) { @@ -1134,7 +1150,7 @@ void main() { #ifdef USE_SOFT_SHADOWS //version with soft shadows, more expensive - if (directional_lights.data[i].shadow_enabled) { + if (directional_lights.data[i].shadow_opacity > 0.001) { float depth_z = -vertex.z; vec4 pssm_coord; @@ -1286,7 +1302,7 @@ void main() { #else // Soft shadow disabled version - if (directional_lights.data[i].shadow_enabled) { + if (directional_lights.data[i].shadow_opacity > 0.001) { float depth_z = -vertex.z; vec4 pssm_coord; diff --git a/servers/rendering/renderer_rd/shaders/skeleton.glsl b/servers/rendering/renderer_rd/shaders/skeleton.glsl index a893a66c94..75bea9300b 100644 --- a/servers/rendering/renderer_rd/shaders/skeleton.glsl +++ b/servers/rendering/renderer_rd/shaders/skeleton.glsl @@ -54,14 +54,54 @@ layout(push_constant, std430) uniform Params { } params; -vec4 decode_abgr_2_10_10_10(uint base) { - uvec4 abgr_2_10_10_10 = (uvec4(base) >> uvec4(0, 10, 20, 30)) & uvec4(0x3FF, 0x3FF, 0x3FF, 0x3); - return vec4(abgr_2_10_10_10) / vec4(1023.0, 1023.0, 1023.0, 3.0) * 2.0 - 1.0; +vec2 uint_to_vec2(uint base) { + uvec2 decode = (uvec2(base) >> uvec2(0, 16)) & uvec2(0xFFFF, 0xFFFF); + return vec2(decode) / vec2(65535.0, 65535.0) * 2.0 - 1.0; } -uint encode_abgr_2_10_10_10(vec4 base) { - uvec4 abgr_2_10_10_10 = uvec4(clamp(ivec4((base * 0.5 + 0.5) * vec4(1023.0, 1023.0, 1023.0, 3.0)), ivec4(0), ivec4(0x3FF, 0x3FF, 0x3FF, 0x3))) << uvec4(0, 10, 20, 30); - return abgr_2_10_10_10.x | abgr_2_10_10_10.y | abgr_2_10_10_10.z | abgr_2_10_10_10.w; +vec3 oct_to_vec3(vec2 oct) { + vec3 v = vec3(oct.xy, 1.0 - abs(oct.x) - abs(oct.y)); + float t = max(-v.z, 0.0); + v.xy += t * -sign(v.xy); + return v; +} + +vec3 decode_uint_oct_to_norm(uint base) { + return oct_to_vec3(uint_to_vec2(base)); +} + +vec4 decode_uint_oct_to_tang(uint base) { + vec2 oct_sign_encoded = uint_to_vec2(base); + // Binormal sign encoded in y component + vec2 oct = vec2(oct_sign_encoded.x, abs(oct_sign_encoded.y) * 2.0 - 1.0); + return vec4(oct_to_vec3(oct), sign(oct_sign_encoded.y)); +} + +vec2 signNotZero(vec2 v) { + return mix(vec2(-1.0), vec2(1.0), greaterThanEqual(v.xy, vec2(0.0))); +} + +uint vec2_to_uint(vec2 base) { + uvec2 enc = uvec2(clamp(ivec2(base * vec2(65535, 65535)), ivec2(0), ivec2(0xFFFF, 0xFFFF))) << uvec2(0, 16); + return enc.x | enc.y; +} + +vec2 vec3_to_oct(vec3 e) { + e /= abs(e.x) + abs(e.y) + abs(e.z); + vec2 oct = e.z >= 0.0f ? e.xy : (vec2(1.0f) - abs(e.yx)) * signNotZero(e.xy); + return oct * 0.5f + 0.5f; +} + +uint encode_norm_to_uint_oct(vec3 base) { + return vec2_to_uint(vec3_to_oct(base)); +} + +uint encode_tang_to_uint_oct(vec4 base) { + vec2 oct = vec3_to_oct(base.xyz); + // Encode binormal sign in y component + oct.y = oct.y * 0.5f + 0.5f; + oct.y = base.w >= 0.0f ? oct.y : 1 - oct.y; + return vec2_to_uint(oct); } void main() { @@ -131,12 +171,12 @@ void main() { src_offset += 3; if (params.has_normal) { - normal = decode_abgr_2_10_10_10(src_vertices.data[src_offset]).rgb; + normal = decode_uint_oct_to_norm(src_vertices.data[src_offset]); src_offset++; } if (params.has_tangent) { - tangent = decode_abgr_2_10_10_10(src_vertices.data[src_offset]); + tangent = decode_uint_oct_to_tang(src_vertices.data[src_offset]); } if (params.has_blend_shape) { @@ -155,12 +195,12 @@ void main() { base_offset += 3; if (params.has_normal) { - blend_normal += decode_abgr_2_10_10_10(src_blend_shapes.data[base_offset]).rgb * w; + blend_normal += decode_uint_oct_to_norm(src_blend_shapes.data[base_offset]) * w; base_offset++; } if (params.has_tangent) { - blend_tangent += decode_abgr_2_10_10_10(src_blend_shapes.data[base_offset]).rgb * w; + blend_tangent += decode_uint_oct_to_tang(src_blend_shapes.data[base_offset]).rgb * w; } blend_total += w; @@ -234,12 +274,12 @@ void main() { dst_offset += 3; if (params.has_normal) { - dst_vertices.data[dst_offset] = encode_abgr_2_10_10_10(vec4(normal, 0.0)); + dst_vertices.data[dst_offset] = encode_norm_to_uint_oct(normal); dst_offset++; } if (params.has_tangent) { - dst_vertices.data[dst_offset] = encode_abgr_2_10_10_10(tangent); + dst_vertices.data[dst_offset] = encode_tang_to_uint_oct(tangent); } #endif |