diff options
Diffstat (limited to 'drivers/gles3/shaders/scene.glsl')
| -rw-r--r-- | drivers/gles3/shaders/scene.glsl | 1432 |
1 files changed, 1432 insertions, 0 deletions
diff --git a/drivers/gles3/shaders/scene.glsl b/drivers/gles3/shaders/scene.glsl new file mode 100644 index 0000000000..c5af010c96 --- /dev/null +++ b/drivers/gles3/shaders/scene.glsl @@ -0,0 +1,1432 @@ +[vertex] + + +/* +from VisualServer: + +ARRAY_VERTEX=0, +ARRAY_NORMAL=1, +ARRAY_TANGENT=2, +ARRAY_COLOR=3, +ARRAY_TEX_UV=4, +ARRAY_TEX_UV2=5, +ARRAY_BONES=6, +ARRAY_WEIGHTS=7, +ARRAY_INDEX=8, +*/ + +//hack to use uv if no uv present so it works with lightmap + + +/* INPUT ATTRIBS */ + +layout(location=0) in highp vec4 vertex_attrib; +layout(location=1) in vec3 normal_attrib; +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) +layout(location=2) in vec4 tangent_attrib; +#endif + +#if defined(ENABLE_COLOR_INTERP) +layout(location=3) in vec4 color_attrib; +#endif + +#if defined(ENABLE_UV_INTERP) +layout(location=4) in vec2 uv_attrib; +#endif + +#if defined(ENABLE_UV2_INTERP) +layout(location=5) in vec2 uv2_attrib; +#endif + +uniform float normal_mult; + +#ifdef USE_SKELETON +layout(location=6) in ivec4 bone_indices; // attrib:6 +layout(location=7) in vec4 bone_weights; // attrib:7 +#endif + +#ifdef USE_INSTANCING + +layout(location=8) in highp vec4 instance_xform0; +layout(location=9) in highp vec4 instance_xform1; +layout(location=10) in highp vec4 instance_xform2; +layout(location=11) in lowp vec4 instance_color; + +#endif + +layout(std140) uniform SceneData { //ubo:0 + + highp mat4 projection_matrix; + highp mat4 camera_inverse_matrix; + highp mat4 camera_matrix; + highp vec4 time; + + highp vec4 ambient_light_color; + highp vec4 bg_color; + float ambient_energy; + float bg_energy; + + float shadow_z_offset; + float shadow_z_slope_scale; + float shadow_dual_paraboloid_render_zfar; + float shadow_dual_paraboloid_render_side; + + vec2 shadow_atlas_pixel_size; + vec2 directional_shadow_pixel_size; + + float reflection_multiplier; + float subsurface_scatter_width; + float ambient_occlusion_affect_light; + +}; + +uniform highp mat4 world_transform; + +#ifdef USE_LIGHT_DIRECTIONAL + +layout(std140) uniform DirectionalLightData { //ubo:3 + + highp vec4 light_pos_inv_radius; + mediump vec4 light_direction_attenuation; + mediump vec4 light_color_energy; + mediump vec4 light_params; //cone attenuation, angle, specular, shadow enabled, + mediump vec4 light_clamp; + mediump vec4 shadow_color; + highp mat4 shadow_matrix1; + highp mat4 shadow_matrix2; + highp mat4 shadow_matrix3; + highp mat4 shadow_matrix4; + mediump vec4 shadow_split_offsets; +}; + +#endif + + +/* Varyings */ + +out highp vec3 vertex_interp; +out vec3 normal_interp; + +#if defined(ENABLE_COLOR_INTERP) +out vec4 color_interp; +#endif + +#if defined(ENABLE_UV_INTERP) +out vec2 uv_interp; +#endif + +#if defined(ENABLE_UV2_INTERP) +out vec2 uv2_interp; +#endif + + +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) +out vec3 tangent_interp; +out vec3 binormal_interp; +#endif + + +#if !defined(USE_DEPTH_SHADOWS) && defined(USE_SHADOW_PASS) + +varying vec4 position_interp; + +#endif + + +VERTEX_SHADER_GLOBALS + + +#if defined(USE_MATERIAL) + +layout(std140) uniform UniformData { //ubo:1 + +MATERIAL_UNIFORMS + +}; + +#endif + +#ifdef RENDER_DEPTH_DUAL_PARABOLOID + +out highp float dp_clip; + +#endif + +#ifdef USE_SKELETON + +layout(std140) uniform SkeletonData { //ubo:7 + + mat3x4 skeleton[MAX_SKELETON_BONES]; +}; + +#endif + +void main() { + + highp vec4 vertex = vertex_attrib; // vec4(vertex_attrib.xyz * data_attrib.x,1.0); + highp mat4 modelview = camera_inverse_matrix * world_transform; + vec3 normal = normal_attrib * normal_mult; + +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) + vec3 tangent = tangent_attrib.xyz; + tangent*=normal_mult; + float binormalf = tangent_attrib.a; +#endif + +#if defined(ENABLE_COLOR_INTERP) + color_interp = color_attrib; +#endif + + +#ifdef USE_SKELETON + + { + //skeleton transform + highp mat3x4 m=skeleton[bone_indices.x]*bone_weights.x; + m+=skeleton[bone_indices.y]*bone_weights.y; + m+=skeleton[bone_indices.z]*bone_weights.z; + m+=skeleton[bone_indices.w]*bone_weights.w; + + vertex.xyz = vertex * m; + + normal = vec4(normal,0.0) * m; +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) + tangent.xyz = vec4(tangent.xyz,0.0) * mn; +#endif + } +#endif // USE_SKELETON1 + + +#ifdef USE_INSTANCING + + { + highp mat3x4 m=mat3x4(instance_xform0,instance_xform1,instance_xform2); + + vertex.xyz = vertex * m; + normal = vec4(normal,0.0) * m; +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) + tangent.xyz = vec4(tangent.xyz,0.0) * mn; +#endif + +#if defined(ENABLE_COLOR_INTERP) + color_interp*=instance_color; +#endif + } +#endif //USE_INSTANCING + +#if !defined(SKIP_TRANSFORM_USED) + + vertex = modelview * vertex; + normal = normalize((modelview * vec4(normal,0.0)).xyz); +#endif + +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) +# if !defined(SKIP_TRANSFORM_USED) + + tangent=normalize((modelview * vec4(tangent,0.0)).xyz); +# endif + vec3 binormal = normalize( cross(normal,tangent) * binormalf ); +#endif + + + + +#if defined(ENABLE_UV_INTERP) + uv_interp = uv_attrib; +#endif + +#if defined(ENABLE_UV2_INTERP) + uv2_interp = uv2_attrib; +#endif + +{ + +VERTEX_SHADER_CODE + +} + + vertex_interp = vertex.xyz; + normal_interp = normal; + +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) + tangent_interp = tangent; + binormal_interp = binormal; +#endif + +#ifdef RENDER_DEPTH + + +#ifdef RENDER_DEPTH_DUAL_PARABOLOID + + vertex_interp.z*= shadow_dual_paraboloid_render_side; + normal_interp.z*= shadow_dual_paraboloid_render_side; + + dp_clip=vertex_interp.z; //this attempts to avoid noise caused by objects sent to the other parabolloid side due to bias + + //for dual paraboloid shadow mapping, this is the fastest but least correct way, as it curves straight edges + + highp vec3 vtx = vertex_interp+normalize(vertex_interp)*shadow_z_offset; + highp float distance = length(vtx); + vtx = normalize(vtx); + vtx.xy/=1.0-vtx.z; + vtx.z=(distance/shadow_dual_paraboloid_render_zfar); + vtx.z=vtx.z * 2.0 - 1.0; + + vertex.xyz=vtx; + vertex.w=1.0; + + +#else + + float z_ofs = shadow_z_offset; + z_ofs += (1.0-abs(normal_interp.z))*shadow_z_slope_scale; + vertex_interp.z-=z_ofs; + +#endif //RENDER_DEPTH_DUAL_PARABOLOID + +#endif //RENDER_DEPTH + + +#if !defined(SKIP_TRANSFORM_USED) && !defined(RENDER_DEPTH_DUAL_PARABOLOID) + gl_Position = projection_matrix * vec4(vertex_interp,1.0); +#else + gl_Position = vertex; +#endif + + +} + + +[fragment] + + + +#define M_PI 3.14159265359 + +/* Varyings */ + +#if defined(ENABLE_COLOR_INTERP) +in vec4 color_interp; +#endif + +#if defined(ENABLE_UV_INTERP) +in vec2 uv_interp; +#endif + +#if defined(ENABLE_UV2_INTERP) +in vec2 uv2_interp; +#endif + +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) +in vec3 tangent_interp; +in vec3 binormal_interp; +#endif + +in highp vec3 vertex_interp; +in vec3 normal_interp; + + +/* PBR CHANNELS */ + +//used on forward mainly +uniform bool no_ambient_light; + +uniform sampler2D brdf_texture; //texunit:-1 + +#ifdef USE_RADIANCE_MAP + +uniform sampler2D radiance_map; //texunit:-2 + + +layout(std140) uniform Radiance { //ubo:2 + + mat4 radiance_inverse_xform; + vec3 radiance_box_min; + vec3 radiance_box_max; + float radiance_ambient_contribution; + +}; + +#endif + +/* Material Uniforms */ + + +FRAGMENT_SHADER_GLOBALS + + +#if defined(USE_MATERIAL) + +layout(std140) uniform UniformData { + +MATERIAL_UNIFORMS + +}; + +#endif + + +layout(std140) uniform SceneData { + + highp mat4 projection_matrix; + highp mat4 camera_inverse_matrix; + highp mat4 camera_matrix; + highp vec4 time; + + highp vec4 ambient_light_color; + highp vec4 bg_color; + float ambient_energy; + float bg_energy; + + float shadow_z_offset; + float shadow_z_slope_scale; + float shadow_dual_paraboloid_render_zfar; + float shadow_dual_paraboloid_render_side; + + vec2 shadow_atlas_pixel_size; + vec2 directional_shadow_pixel_size; + + float reflection_multiplier; + float subsurface_scatter_width; + float ambient_occlusion_affect_light; + +}; + +//directional light data + +#ifdef USE_LIGHT_DIRECTIONAL + +layout(std140) uniform DirectionalLightData { + + highp vec4 light_pos_inv_radius; + mediump vec4 light_direction_attenuation; + mediump vec4 light_color_energy; + mediump vec4 light_params; //cone attenuation, angle, specular, shadow enabled, + mediump vec4 light_clamp; + mediump vec4 shadow_color; + highp mat4 shadow_matrix1; + highp mat4 shadow_matrix2; + highp mat4 shadow_matrix3; + highp mat4 shadow_matrix4; + mediump vec4 shadow_split_offsets; +}; + + +uniform highp sampler2DShadow directional_shadow; //texunit:-4 + +#endif + +//omni and spot + +struct LightData { + + highp vec4 light_pos_inv_radius; + mediump vec4 light_direction_attenuation; + mediump vec4 light_color_energy; + mediump vec4 light_params; //cone attenuation, angle, specular, shadow enabled, + mediump vec4 light_clamp; + mediump vec4 shadow_color; + highp mat4 shadow_matrix; + +}; + + +layout(std140) uniform OmniLightData { //ubo:4 + + LightData omni_lights[MAX_LIGHT_DATA_STRUCTS]; +}; + +layout(std140) uniform SpotLightData { //ubo:5 + + LightData spot_lights[MAX_LIGHT_DATA_STRUCTS]; +}; + + +uniform highp sampler2DShadow shadow_atlas; //texunit:-3 + + +struct ReflectionData { + + mediump vec4 box_extents; + mediump vec4 box_offset; + mediump vec4 params; // intensity, 0, interior , boxproject + mediump vec4 ambient; //ambient color, energy + mediump vec4 atlas_clamp; + highp mat4 local_matrix; //up to here for spot and omni, rest is for directional + //notes: for ambientblend, use distance to edge to blend between already existing global environment +}; + +layout(std140) uniform ReflectionProbeData { //ubo:6 + + ReflectionData reflections[MAX_REFLECTION_DATA_STRUCTS]; +}; +uniform mediump sampler2D reflection_atlas; //texunit:-5 + + +#ifdef USE_FORWARD_LIGHTING + +uniform int omni_light_indices[MAX_FORWARD_LIGHTS]; +uniform int omni_light_count; + +uniform int spot_light_indices[MAX_FORWARD_LIGHTS]; +uniform int spot_light_count; + +uniform int reflection_indices[MAX_FORWARD_LIGHTS]; +uniform int reflection_count; + +#endif + + + +#ifdef USE_MULTIPLE_RENDER_TARGETS + +layout(location=0) out vec4 diffuse_buffer; +layout(location=1) out vec4 specular_buffer; +layout(location=2) out vec4 normal_mr_buffer; +#if defined (ENABLE_SSS_MOTION) +layout(location=3) out vec4 motion_ssr_buffer; +#endif + +#else + +layout(location=0) out vec4 frag_color; + +#endif + + +// GGX Specular +// Source: http://www.filmicworlds.com/images/ggx-opt/optimized-ggx.hlsl +float G1V(float dotNV, float k) +{ + return 1.0 / (dotNV * (1.0 - k) + k); +} + + +float SchlickFresnel(float u) +{ + float m = 1.0-u; + float m2 = m*m; + return m2*m2*m; // pow(m,5) +} + +float GTR1(float NdotH, float a) +{ + if (a >= 1.0) return 1.0/M_PI; + float a2 = a*a; + float t = 1.0 + (a2-1.0)*NdotH*NdotH; + return (a2-1.0) / (M_PI*log(a2)*t); +} + +void light_compute(vec3 N, vec3 L,vec3 V,vec3 B, vec3 T,vec3 light_color,vec3 diffuse_color, vec3 specular_color, float specular_blob_intensity, float roughness, float rim,float rim_tint, float clearcoat, float clearcoat_gloss,float anisotropy,inout vec3 diffuse, inout vec3 specular) { + + float dotNL = max(dot(N,L), 0.0 ); + float dotNV = max(dot(N,V), 0.0 ); + +#if defined(LIGHT_USE_RIM) + float rim_light = pow(1.0-dotNV,(1.0-roughness)*16.0); + diffuse += rim_light * rim * mix(vec3(1.0),diffuse_color,rim_tint) * light_color; +#endif + + diffuse += dotNL * light_color * diffuse_color; + + if (roughness > 0.0) { + + float alpha = roughness * roughness; + + vec3 H = normalize(V + L); + + float dotNH = max(dot(N,H), 0.0 ); + float dotLH = max(dot(L,H), 0.0 ); + + // D +#if defined(LIGHT_USE_ANISOTROPY) + + float aspect = sqrt(1.0-anisotropy*0.9); + float rx = roughness/aspect; + float ry = roughness*aspect; + float ax = rx*rx; + float ay = ry*ry; + float dotXH = dot( T, H ); + float dotYH = dot( B, H ); + float pi = M_PI; + float denom = dotXH*dotXH / (ax*ax) + dotYH*dotYH / (ay*ay) + dotNH*dotNH; + float D = 1.0 / ( pi * ax*ay * denom*denom ); + +#else + float alphaSqr = alpha * alpha; + float pi = M_PI; + float denom = dotNH * dotNH * (alphaSqr - 1.0) + 1.0; + float D = alphaSqr / (pi * denom * denom); +#endif + // F + float F0 = 1.0; + float dotLH5 = SchlickFresnel( dotLH ); + float F = F0 + (1.0 - F0) * (dotLH5); + + // V + float k = alpha / 2.0f; + float vis = G1V(dotNL, k) * G1V(dotNV, k); + + float speci = dotNL * D * F * vis; + + specular += speci * light_color /* specular_color*/ * specular_blob_intensity; + +#if defined(LIGHT_USE_CLEARCOAT) + float Dr = GTR1(dotNH, mix(.1,.001,clearcoat_gloss)); + float Fr = mix(.04, 1.0, dotLH5); + float Gr = G1V(dotNL, .25) * G1V(dotNV, .25); + + specular += .25*clearcoat*Gr*Fr*Dr; +#endif + } + + +} + + +float sample_shadow(highp sampler2DShadow shadow, vec2 shadow_pixel_size, vec2 pos, float depth, vec4 clamp_rect) { + +#ifdef SHADOW_MODE_PCF_13 + + float avg=textureProj(shadow,vec4(pos,depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(shadow_pixel_size.x,0.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(-shadow_pixel_size.x,0.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(0.0,shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(0.0,-shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(shadow_pixel_size.x,shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(-shadow_pixel_size.x,shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(shadow_pixel_size.x,-shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(-shadow_pixel_size.x,-shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(shadow_pixel_size.x*2.0,0.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(-shadow_pixel_size.x*2.0,0.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(0.0,shadow_pixel_size.y*2.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(0.0,-shadow_pixel_size.y*2.0),depth,1.0)); + return avg*(1.0/13.0); + +#endif + +#ifdef SHADOW_MODE_PCF_5 + + float avg=textureProj(shadow,vec4(pos,depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(shadow_pixel_size.x,0.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(-shadow_pixel_size.x,0.0),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(0.0,shadow_pixel_size.y),depth,1.0)); + avg+=textureProj(shadow,vec4(pos+vec2(0.0,-shadow_pixel_size.y),depth,1.0)); + return avg*(1.0/5.0); +#endif + +#if !defined(SHADOW_MODE_PCF_5) && !defined(SHADOW_MODE_PCF_13) + + return textureProj(shadow,vec4(pos,depth,1.0)); +#endif + +} + +#ifdef RENDER_DEPTH_DUAL_PARABOLOID + +in highp float dp_clip; + +#endif + +#if 0 +//need to save texture depth for this + +vec3 light_transmittance(float translucency,vec3 light_vec, vec3 normal, vec3 pos, float distance) { + + float scale = 8.25 * (1.0 - translucency) / subsurface_scatter_width; + float d = scale * distance; + + /** + * Armed with the thickness, we can now calculate the color by means of the + * precalculated transmittance profile. + * (It can be precomputed into a texture, for maximum performance): + */ + float dd = -d * d; + vec3 profile = vec3(0.233, 0.455, 0.649) * exp(dd / 0.0064) + + vec3(0.1, 0.336, 0.344) * exp(dd / 0.0484) + + vec3(0.118, 0.198, 0.0) * exp(dd / 0.187) + + vec3(0.113, 0.007, 0.007) * exp(dd / 0.567) + + vec3(0.358, 0.004, 0.0) * exp(dd / 1.99) + + vec3(0.078, 0.0, 0.0) * exp(dd / 7.41); + + /** + * Using the profile, we finally approximate the transmitted lighting from + * the back of the object: + */ + return profile * clamp(0.3 + dot(light_vec, normal),0.0,1.0); +} +#endif + +void light_process_omni(int idx, vec3 vertex, vec3 eye_vec,vec3 normal,vec3 binormal, vec3 tangent, vec3 albedo, vec3 specular, float roughness, float rim, float rim_tint, float clearcoat, float clearcoat_gloss,float anisotropy,inout vec3 diffuse_light, inout vec3 specular_light) { + + vec3 light_rel_vec = omni_lights[idx].light_pos_inv_radius.xyz-vertex; + float normalized_distance = length( light_rel_vec )*omni_lights[idx].light_pos_inv_radius.w; + vec3 light_attenuation = vec3(pow( max(1.0 - normalized_distance, 0.0), omni_lights[idx].light_direction_attenuation.w )); + + if (omni_lights[idx].light_params.w>0.5) { + //there is a shadowmap + + highp vec3 splane=(omni_lights[idx].shadow_matrix * vec4(vertex,1.0)).xyz; + float shadow_len=length(splane); + splane=normalize(splane); + vec4 clamp_rect=omni_lights[idx].light_clamp; + + if (splane.z>=0.0) { + + splane.z+=1.0; + + clamp_rect.y+=clamp_rect.w; + + } else { + + splane.z=1.0 - splane.z; + + //if (clamp_rect.z<clamp_rect.w) { + // clamp_rect.x+=clamp_rect.z; + //} else { + // clamp_rect.y+=clamp_rect.w; + //} + + } + + splane.xy/=splane.z; + splane.xy=splane.xy * 0.5 + 0.5; + splane.z = shadow_len * omni_lights[idx].light_pos_inv_radius.w; + + splane.xy = clamp_rect.xy+splane.xy*clamp_rect.zw; + + light_attenuation*=mix(omni_lights[idx].shadow_color.rgb,vec3(1.0),sample_shadow(shadow_atlas,shadow_atlas_pixel_size,splane.xy,splane.z,clamp_rect)); + } + + light_compute(normal,normalize(light_rel_vec),eye_vec,binormal,tangent,omni_lights[idx].light_color_energy.rgb*light_attenuation,albedo,specular,omni_lights[idx].light_params.z,roughness,rim,rim_tint,clearcoat,clearcoat_gloss,anisotropy,diffuse_light,specular_light); + +} + +void light_process_spot(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 binormal, vec3 tangent,vec3 albedo, vec3 specular, float roughness, float rim,float rim_tint, float clearcoat, float clearcoat_gloss,float anisotropy, inout vec3 diffuse_light, inout vec3 specular_light) { + + vec3 light_rel_vec = spot_lights[idx].light_pos_inv_radius.xyz-vertex; + float normalized_distance = length( light_rel_vec )*spot_lights[idx].light_pos_inv_radius.w; + vec3 light_attenuation = vec3(pow( max(1.0 - normalized_distance, 0.0), spot_lights[idx].light_direction_attenuation.w )); + vec3 spot_dir = spot_lights[idx].light_direction_attenuation.xyz; + float spot_cutoff=spot_lights[idx].light_params.y; + float scos = max(dot(-normalize(light_rel_vec), spot_dir),spot_cutoff); + float spot_rim = (1.0 - scos) / (1.0 - spot_cutoff); + light_attenuation *= 1.0 - pow( spot_rim, spot_lights[idx].light_params.x); + + if (spot_lights[idx].light_params.w>0.5) { + //there is a shadowmap + highp vec4 splane=(spot_lights[idx].shadow_matrix * vec4(vertex,1.0)); + splane.xyz/=splane.w; + light_attenuation*=mix(spot_lights[idx].shadow_color.rgb,vec3(1.0),sample_shadow(shadow_atlas,shadow_atlas_pixel_size,splane.xy,splane.z,spot_lights[idx].light_clamp)); + } + + light_compute(normal,normalize(light_rel_vec),eye_vec,binormal,tangent,spot_lights[idx].light_color_energy.rgb*light_attenuation,albedo,specular,spot_lights[idx].light_params.z,roughness,rim,rim_tint,clearcoat,clearcoat_gloss,anisotropy,diffuse_light,specular_light); + +} + +void reflection_process(int idx, vec3 vertex, vec3 normal,vec3 binormal, vec3 tangent,float roughness,float anisotropy,vec3 ambient,vec3 skybox,vec2 brdf, inout highp vec4 reflection_accum,inout highp vec4 ambient_accum) { + + vec3 ref_vec = normalize(reflect(vertex,normal)); + vec3 local_pos = (reflections[idx].local_matrix * vec4(vertex,1.0)).xyz; + vec3 box_extents = reflections[idx].box_extents.xyz; + + if (any(greaterThan(abs(local_pos),box_extents))) { //out of the reflection box + return; + } + + 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 + blend=mix(length(inner_pos),blend,blend); + blend*=blend; + blend=1.001-blend; + + if (reflections[idx].params.x>0.0){// compute reflection + + vec3 local_ref_vec = (reflections[idx].local_matrix * vec4(ref_vec,0.0)).xyz; + + if (reflections[idx].params.w > 0.5) { //box project + + vec3 nrdir = normalize(local_ref_vec); + vec3 rbmax = (box_extents - local_pos)/nrdir; + vec3 rbmin = (-box_extents - local_pos)/nrdir; + + + vec3 rbminmax = mix(rbmin,rbmax,greaterThan(nrdir,vec3(0.0,0.0,0.0))); + + float fa = min(min(rbminmax.x, rbminmax.y), rbminmax.z); + vec3 posonbox = local_pos + nrdir * fa; + local_ref_vec = posonbox - reflections[idx].box_offset.xyz; + } + + + + vec3 splane=normalize(local_ref_vec); + vec4 clamp_rect=reflections[idx].atlas_clamp; + + splane.z*=-1.0; + if (splane.z>=0.0) { + splane.z+=1.0; + clamp_rect.y+=clamp_rect.w; + } else { + splane.z=1.0 - splane.z; + splane.y=-splane.y; + } + + splane.xy/=splane.z; + splane.xy=splane.xy * 0.5 + 0.5; + + splane.xy = splane.xy * clamp_rect.zw + clamp_rect.xy; + splane.xy = clamp(splane.xy,clamp_rect.xy,clamp_rect.xy+clamp_rect.zw); + + highp vec4 reflection; + reflection.rgb = textureLod(reflection_atlas,splane.xy,roughness*5.0).rgb * brdf.x + brdf.y; + + if (reflections[idx].params.z < 0.5) { + reflection.rgb = mix(skybox,reflection.rgb,blend); + } + reflection.rgb*=reflections[idx].params.x; + reflection.a = blend; + reflection.rgb*=reflection.a; + + reflection_accum+=reflection; + } + + if (reflections[idx].ambient.a>0.0) { //compute ambient using skybox + + + vec3 local_amb_vec = (reflections[idx].local_matrix * vec4(normal,0.0)).xyz; + + vec3 splane=normalize(local_amb_vec); + vec4 clamp_rect=reflections[idx].atlas_clamp; + + splane.z*=-1.0; + if (splane.z>=0.0) { + splane.z+=1.0; + clamp_rect.y+=clamp_rect.w; + } else { + splane.z=1.0 - splane.z; + splane.y=-splane.y; + } + + splane.xy/=splane.z; + splane.xy=splane.xy * 0.5 + 0.5; + + splane.xy = splane.xy * clamp_rect.zw + clamp_rect.xy; + splane.xy = clamp(splane.xy,clamp_rect.xy,clamp_rect.xy+clamp_rect.zw); + + highp vec4 ambient_out; + ambient_out.a=blend; + ambient_out.rgb = textureLod(reflection_atlas,splane.xy,5.0).rgb; + ambient_out.rgb=mix(reflections[idx].ambient.rgb,ambient_out.rgb,reflections[idx].ambient.a); + if (reflections[idx].params.z < 0.5) { + ambient_out.rgb = mix(ambient,ambient_out.rgb,blend); + } + + ambient_out.rgb *= ambient_out.a; + ambient_accum+=ambient_out; + } else { + + highp vec4 ambient_out; + ambient_out.a=blend; + ambient_out.rgb=reflections[idx].ambient.rgb; + if (reflections[idx].params.z < 0.5) { + ambient_out.rgb = mix(ambient,ambient_out.rgb,blend); + } + ambient_out.rgb *= ambient_out.a; + ambient_accum+=ambient_out; + + } +} + +#ifdef USE_GI_PROBES + +uniform mediump sampler3D gi_probe1; //texunit:-6 +uniform highp mat4 gi_probe_xform1; +uniform highp vec3 gi_probe_bounds1; +uniform highp vec3 gi_probe_cell_size1; +uniform highp float gi_probe_multiplier1; +uniform bool gi_probe_blend_ambient1; + +uniform mediump sampler3D gi_probe2; //texunit:-7 +uniform highp mat4 gi_probe_xform2; +uniform highp vec3 gi_probe_bounds2; +uniform highp vec3 gi_probe_cell_size2; +uniform highp float gi_probe_multiplier2; +uniform bool gi_probe2_enabled; +uniform bool gi_probe_blend_ambient2; + +vec3 voxel_cone_trace(sampler3D probe, vec3 cell_size, vec3 pos, vec3 ambient, bool blend_ambient, vec3 direction, float tan_half_angle, float max_distance) { + + + float dist = dot(direction,mix(vec3(-1.0),vec3(1.0),greaterThan(direction,vec3(0.0))))*2.0; + float alpha=0.0; + vec3 color = vec3(0.0); + + while(dist < max_distance && alpha < 0.95) { + float diameter = max(1.0, 2.0 * tan_half_angle * dist); + vec4 scolor = textureLod(probe, (pos + dist * direction) * cell_size, log2(diameter) ); + float a = (1.0 - alpha); + color += scolor.rgb * a; + alpha += a * scolor.a; + dist += diameter * 0.5; + } + + //color.rgb = mix(color.rgb,mix(ambient,color.rgb,alpha),blend_ambient); + + return color; +} + +void gi_probe_compute(sampler3D probe, mat4 probe_xform, vec3 bounds,vec3 cell_size,vec3 pos, vec3 ambient, vec3 environment, bool blend_ambient,float multiplier, mat3 normal_mtx,vec3 ref_vec, float roughness, out vec4 out_spec, out vec4 out_diff) { + + + + vec3 probe_pos = (probe_xform * vec4(pos,1.0)).xyz; + vec3 ref_pos = (probe_xform * vec4(pos+ref_vec,1.0)).xyz; + + ref_vec = normalize(ref_pos - probe_pos); + +/* out_diff.rgb = voxel_cone_trace(probe,cell_size,probe_pos,normalize((probe_xform * vec4(ref_vec,0.0)).xyz),0.0 ,100.0); + out_diff.a = 1.0; + return;*/ + //out_diff = vec4(textureLod(probe,probe_pos*cell_size,3.0).rgb,1.0); + //return; + + if (any(bvec2(any(lessThan(probe_pos,vec3(0.0))),any(greaterThan(probe_pos,bounds))))) + return; + + vec3 blendv = probe_pos/bounds * 2.0 - 1.0; + float blend = 1.001-max(blendv.x,max(blendv.y,blendv.z)); + blend=1.0; + + float max_distance = length(bounds); + + //radiance +#ifdef VCT_QUALITY_HIGH + +#define MAX_CONE_DIRS 6 + vec3 cone_dirs[MAX_CONE_DIRS] = vec3[] ( + vec3(0, 0, 1), + vec3(0.866025, 0, 0.5), + vec3(0.267617, 0.823639, 0.5), + vec3(-0.700629, 0.509037, 0.5), + vec3(-0.700629, -0.509037, 0.5), + vec3(0.267617, -0.823639, 0.5) + ); + + float cone_weights[MAX_CONE_DIRS] = float[](0.25, 0.15, 0.15, 0.15, 0.15, 0.15); + float cone_angle_tan = 0.577; + float min_ref_tan = 0.0; +#else + +#define MAX_CONE_DIRS 4 + + vec3 cone_dirs[MAX_CONE_DIRS] = vec3[] ( + vec3(0.707107, 0, 0.707107), + vec3(0, 0.707107, 0.707107), + vec3(-0.707107, 0, 0.707107), + vec3(0, -0.707107, 0.707107) + ); + + float cone_weights[MAX_CONE_DIRS] = float[](0.25, 0.25, 0.25, 0.25); + float cone_angle_tan = 0.98269; + max_distance*=0.5; + float min_ref_tan = 0.2; + +#endif + vec3 light=vec3(0.0); + for(int i=0;i<MAX_CONE_DIRS;i++) { + + vec3 dir = normalize( (probe_xform * vec4(pos + normal_mtx * cone_dirs[i],1.0)).xyz - probe_pos); + light+=cone_weights[i] * voxel_cone_trace(probe,cell_size,probe_pos,ambient,blend_ambient,dir,cone_angle_tan,max_distance); + + } + + light*=multiplier; + + out_diff = vec4(light*blend,blend); + + //irradiance + + vec3 irr_light = voxel_cone_trace(probe,cell_size,probe_pos,environment,blend_ambient,ref_vec,max(min_ref_tan,tan(roughness * 0.5 * M_PI)) ,max_distance); + + irr_light *= multiplier; + //irr_light=vec3(0.0); + + out_spec = vec4(irr_light*blend,blend); +} + + +void gi_probes_compute(vec3 pos, vec3 normal, float roughness, vec3 specular, inout vec3 out_specular, inout vec3 out_ambient) { + + roughness = roughness * roughness; + + vec3 ref_vec = normalize(reflect(normalize(pos),normal)); + + //find arbitrary tangent and bitangent, then build a matrix + vec3 v0 = abs(normal.z) < 0.999 ? vec3(0, 0, 1) : vec3(0, 1, 0); + vec3 tangent = normalize(cross(v0, normal)); + vec3 bitangent = normalize(cross(tangent, normal)); + mat3 normal_mat = mat3(tangent,bitangent,normal); + + vec4 diff_accum = vec4(0.0); + vec4 spec_accum = vec4(0.0); + + vec3 ambient = out_ambient; + out_ambient = vec3(0.0); + + vec3 environment = out_specular; + + out_specular = vec3(0.0); + + gi_probe_compute(gi_probe1,gi_probe_xform1,gi_probe_bounds1,gi_probe_cell_size1,pos,ambient,environment,gi_probe_blend_ambient1,gi_probe_multiplier1,normal_mat,ref_vec,roughness,spec_accum,diff_accum); + + if (gi_probe2_enabled) { + + gi_probe_compute(gi_probe2,gi_probe_xform2,gi_probe_bounds2,gi_probe_cell_size2,pos,ambient,environment,gi_probe_blend_ambient2,gi_probe_multiplier2,normal_mat,ref_vec,roughness,spec_accum,diff_accum); + } + + if (diff_accum.a>0.0) { + diff_accum.rgb/=diff_accum.a; + } + + if (spec_accum.a>0.0) { + spec_accum.rgb/=spec_accum.a; + } + + out_specular+=spec_accum.rgb; + out_ambient+=diff_accum.rgb; + +} + +#endif + + +void main() { + +#ifdef RENDER_DEPTH_DUAL_PARABOLOID + + if (dp_clip>0.0) + discard; +#endif + + //lay out everything, whathever is unused is optimized away anyway + highp vec3 vertex = vertex_interp; + vec3 albedo = vec3(0.8,0.8,0.8); + vec3 specular = vec3(0.2,0.2,0.2); + vec3 emission = vec3(0.0,0.0,0.0); + float roughness = 1.0; + float rim = 0.0; + float rim_tint = 0.0; + float clearcoat=0.0; + float clearcoat_gloss=0.0; + float anisotropy = 1.0; + vec2 anisotropy_flow = vec2(1.0,0.0); + +#if defined(ENABLE_AO) + float ao=1.0; +#endif + + float alpha = 1.0; + +#ifdef METERIAL_DOUBLESIDED + float side=float(gl_FrontFacing)*2.0-1.0; +#else + float side=1.0; +#endif + + +#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) + vec3 binormal = normalize(binormal_interp)*side; + vec3 tangent = normalize(tangent_interp)*side; +#else + vec3 binormal = vec3(0.0); + vec3 tangent = vec3(0.0); +#endif + vec3 normal = normalize(normal_interp)*side; + +#if defined(ENABLE_UV_INTERP) + vec2 uv = uv_interp; +#endif + +#if defined(ENABLE_UV2_INTERP) + vec2 uv2 = uv2_interp; +#endif + +#if defined(ENABLE_COLOR_INTERP) + vec4 color = color_interp; +#endif + +#if defined(ENABLE_NORMALMAP) + + vec3 normalmap = vec3(0.0); +#endif + + float normaldepth=1.0; + + + +#if defined(ENABLE_DISCARD) + bool discard_=false; +#endif + +#if defined (ENABLE_SSS_MOTION) + float sss_strength=0.0; +#endif + +{ + + +FRAGMENT_SHADER_CODE + +} + + + +#if defined(ENABLE_NORMALMAP) + + normalmap.xy=normalmap.xy*2.0-1.0; + normalmap.z=sqrt(1.0-dot(normalmap.xy,normalmap.xy)); //always ignore Z, as it can be RG packed, Z may be pos/neg, etc. + + normal = normalize( mix(normal_interp,tangent * normalmap.x + binormal * normalmap.y + normal * normalmap.z,normaldepth) ) * side; + +#endif + +#if defined(LIGHT_USE_ANISOTROPY) + + if (anisotropy>0.01) { + //rotation matrix + mat3 rot = mat3( tangent, binormal, normal ); + //make local to space + tangent = normalize(rot * vec3(anisotropy_flow.x,anisotropy_flow.y,0.0)); + binormal = normalize(rot * vec3(-anisotropy_flow.y,anisotropy_flow.x,0.0)); + } + +#endif + +#if defined(ENABLE_DISCARD) + if (discard_) { + //easy to eliminate dead code + discard; + } +#endif + +#ifdef ENABLE_CLIP_ALPHA + if (albedo.a<0.99) { + //used for doublepass and shadowmapping + discard; + } +#endif + +/////////////////////// LIGHTING ////////////////////////////// + + //apply energy conservation + + vec3 specular_light = vec3(0.0,0.0,0.0); + vec3 ambient_light; + vec3 diffuse_light = vec3(0.0,0.0,0.0); + + vec3 eye_vec = -normalize( vertex_interp ); + +#ifndef RENDER_DEPTH + float ndotv = clamp(dot(normal,eye_vec),0.0,1.0); + + vec2 brdf = texture(brdf_texture, vec2(roughness, ndotv)).xy; +#endif + +#ifdef USE_RADIANCE_MAP + + if (no_ambient_light) { + ambient_light=vec3(0.0,0.0,0.0); + } else { + { + + + + float lod = roughness * 5.0; + + { //read radiance from dual paraboloid + + vec3 ref_vec = reflect(-eye_vec,normal); //2.0 * ndotv * normal - view; // reflect(v, n); + ref_vec=normalize((radiance_inverse_xform * vec4(ref_vec,0.0)).xyz); + + vec3 norm = normalize(ref_vec); + float y_ofs=0.0; + if (norm.z>=0.0) { + + norm.z+=1.0; + y_ofs+=0.5; + } else { + norm.z=1.0 - norm.z; + norm.y=-norm.y; + } + + norm.xy/=norm.z; + norm.xy=norm.xy * vec2(0.5,0.25) + vec2(0.5,0.25+y_ofs); + specular_light = textureLod(radiance_map, norm.xy, lod).xyz * brdf.x + brdf.y; + + } + //no longer a cubemap + //vec3 radiance = textureLod(radiance_cube, r, lod).xyz * ( brdf.x + brdf.y); + + } + + { + + /*vec3 ambient_dir=normalize((radiance_inverse_xform * vec4(normal,0.0)).xyz); + vec3 env_ambient=textureLod(radiance_cube, ambient_dir, 5.0).xyz; + + ambient_light=mix(ambient_light_color.rgb,env_ambient,radiance_ambient_contribution);*/ + ambient_light=vec3(0.0,0.0,0.0); + } + } + +#else + + if (no_ambient_light){ + ambient_light=vec3(0.0,0.0,0.0); + } else { + ambient_light=ambient_light_color.rgb; + } +#endif + + +#ifdef USE_LIGHT_DIRECTIONAL + + vec3 light_attenuation=vec3(1.0); + +#ifdef LIGHT_DIRECTIONAL_SHADOW + + if (gl_FragCoord.w > shadow_split_offsets.w) { + + vec3 pssm_coord; + +#ifdef LIGHT_USE_PSSM_BLEND + float pssm_blend; + vec3 pssm_coord2; + bool use_blend=true; + vec3 light_pssm_split_inv = 1.0/shadow_split_offsets.xyz; + float w_inv = 1.0/gl_FragCoord.w; +#endif + + +#ifdef LIGHT_USE_PSSM4 + + + if (gl_FragCoord.w > shadow_split_offsets.y) { + + if (gl_FragCoord.w > shadow_split_offsets.x) { + + highp vec4 splane=(shadow_matrix1 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; + + +#if defined(LIGHT_USE_PSSM_BLEND) + + splane=(shadow_matrix2 * vec4(vertex,1.0)); + pssm_coord2=splane.xyz/splane.w; + pssm_blend=smoothstep(0.0,light_pssm_split_inv.x,w_inv); +#endif + + } else { + + highp vec4 splane=(shadow_matrix2 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; + +#if defined(LIGHT_USE_PSSM_BLEND) + splane=(shadow_matrix3 * vec4(vertex,1.0)); + pssm_coord2=splane.xyz/splane.w; + pssm_blend=smoothstep(light_pssm_split_inv.x,light_pssm_split_inv.y,w_inv); +#endif + + } + } else { + + + if (gl_FragCoord.w > shadow_split_offsets.z) { + + highp vec4 splane=(shadow_matrix3 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; + +#if defined(LIGHT_USE_PSSM_BLEND) + splane=(shadow_matrix4 * vec4(vertex,1.0)); + pssm_coord2=splane.xyz/splane.w; + pssm_blend=smoothstep(light_pssm_split_inv.y,light_pssm_split_inv.z,w_inv); +#endif + + } else { + highp vec4 splane=(shadow_matrix4 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; + +#if defined(LIGHT_USE_PSSM_BLEND) + use_blend=false; + +#endif + + } + } + +#endif //LIGHT_USE_PSSM4 + +#ifdef LIGHT_USE_PSSM2 + + if (gl_FragCoord.w > shadow_split_offsets.x) { + + highp vec4 splane=(shadow_matrix1 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; + + +#if defined(LIGHT_USE_PSSM_BLEND) + + splane=(shadow_matrix2 * vec4(vertex,1.0)); + pssm_coord2=splane.xyz/splane.w; + pssm_blend=smoothstep(0.0,light_pssm_split_inv.x,w_inv); +#endif + + } else { + highp vec4 splane=(shadow_matrix2 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; +#if defined(LIGHT_USE_PSSM_BLEND) + use_blend=false; + +#endif + + } + +#endif //LIGHT_USE_PSSM2 + +#if !defined(LIGHT_USE_PSSM4) && !defined(LIGHT_USE_PSSM2) + { //regular orthogonal + highp vec4 splane=(shadow_matrix1 * vec4(vertex,1.0)); + pssm_coord=splane.xyz/splane.w; + } +#endif + + + //one one sample + light_attenuation=mix(shadow_color.rgb,vec3(1.0),sample_shadow(directional_shadow,directional_shadow_pixel_size,pssm_coord.xy,pssm_coord.z,light_clamp)); + + +#if defined(LIGHT_USE_PSSM_BLEND) + if (use_blend) { + vec3 light_attenuation2=mix(shadow_color.rgb,vec3(1.0),sample_shadow(directional_shadow,directional_shadow_pixel_size,pssm_coord2.xy,pssm_coord2.z,light_clamp)); + light_attenuation=mix(light_attenuation,light_attenuation2,pssm_blend); + } +#endif + + } + +#endif //LIGHT_DIRECTIONAL_SHADOW + + light_compute(normal,-light_direction_attenuation.xyz,eye_vec,binormal,tangent,light_color_energy.rgb*light_attenuation,albedo,specular,light_params.z,roughness,rim,rim_tint,clearcoat,clearcoat_gloss,anisotropy,diffuse_light,specular_light); + + +#endif //#USE_LIGHT_DIRECTIONAL + +#ifdef USE_GI_PROBES + gi_probes_compute(vertex,normal,roughness,specular,specular_light,ambient_light); +#endif + + +#ifdef USE_FORWARD_LIGHTING + + highp vec4 reflection_accum = vec4(0.0,0.0,0.0,0.0); + highp vec4 ambient_accum = vec4(0.0,0.0,0.0,0.0); + + + + for(int i=0;i<reflection_count;i++) { + reflection_process(reflection_indices[i],vertex,normal,binormal,tangent,roughness,anisotropy,ambient_light,specular_light,brdf,reflection_accum,ambient_accum); + } + + if (reflection_accum.a>0.0) { + specular_light+=reflection_accum.rgb/reflection_accum.a; + } + if (ambient_accum.a>0.0) { + ambient_light+=ambient_accum.rgb/ambient_accum.a; + } + + for(int i=0;i<omni_light_count;i++) { + light_process_omni(omni_light_indices[i],vertex,eye_vec,normal,binormal,tangent,albedo,specular,roughness,rim,rim_tint,clearcoat,clearcoat_gloss,anisotropy,diffuse_light,specular_light); + } + + for(int i=0;i<spot_light_count;i++) { + light_process_spot(spot_light_indices[i],vertex,eye_vec,normal,binormal,tangent,albedo,specular,roughness,rim,rim_tint,clearcoat,clearcoat_gloss,anisotropy,diffuse_light,specular_light); + } + + + +#endif + + + + +#if defined(USE_LIGHT_SHADER_CODE) +//light is written by the light shader +{ + +LIGHT_SHADER_CODE + +} +#endif + +#ifdef RENDER_DEPTH +//nothing happens, so a tree-ssa optimizer will result in no fragment shader :) +#else + + specular_light*=reflection_multiplier; + ambient_light*=albedo; //ambient must be multiplied by albedo at the end + +#if defined(ENABLE_AO) + ambient_light*=ao; +#endif + + //energy conservation + diffuse_light=mix(diffuse_light,vec3(0.0),specular); + ambient_light=mix(ambient_light,vec3(0.0),specular); + specular_light *= max(vec3(0.04),specular); + +#ifdef USE_MULTIPLE_RENDER_TARGETS + +#if defined(ENABLE_AO) + + float ambient_scale=0.0; // AO is supplied by material +#else + //approximate ambient scale for SSAO, since we will lack full ambient + float max_emission=max(emission.r,max(emission.g,emission.b)); + float max_ambient=max(ambient_light.r,max(ambient_light.g,ambient_light.b)); + float max_diffuse=max(diffuse_light.r,max(diffuse_light.g,diffuse_light.b)); + float total_ambient = max_ambient+max_diffuse+max_emission; + float ambient_scale = (total_ambient>0.0) ? (max_ambient+ambient_occlusion_affect_light*max_diffuse)/total_ambient : 0.0; +#endif //ENABLE_AO + + diffuse_buffer=vec4(emission+diffuse_light+ambient_light,ambient_scale); + specular_buffer=vec4(specular_light,max(specular.r,max(specular.g,specular.b))); + + + normal_mr_buffer=vec4(normalize(normal)*0.5+0.5,roughness); + +#if defined (ENABLE_SSS_MOTION) + motion_ssr_buffer = vec4(vec3(0.0),sss_strength); +#endif + +#else + + +#ifdef SHADELESS + frag_color=vec4(albedo,alpha); +#else + frag_color=vec4(emission+ambient_light+diffuse_light+specular_light,alpha); +#endif //SHADELESS + + +#endif //USE_MULTIPLE_RENDER_TARGETS + + + +#endif //RENDER_DEPTH + + +} + + |