883 lines
20 KiB
GLSL
883 lines
20 KiB
GLSL
[vertex]
|
|
|
|
#ifdef USE_GLES_OVER_GL
|
|
#define mediump
|
|
#define highp
|
|
#else
|
|
precision mediump float;
|
|
precision mediump int;
|
|
#endif
|
|
|
|
#include "stdlib.glsl"
|
|
|
|
|
|
|
|
//
|
|
// attributes
|
|
//
|
|
|
|
attribute highp vec4 vertex_attrib; // attrib:0
|
|
attribute vec3 normal_attrib; // attrib:1
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
attribute vec4 tangent_attrib; // attrib:2
|
|
#endif
|
|
|
|
#ifdef ENABLE_COLOR_INTERP
|
|
attribute vec4 color_attrib; // attrib:3
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV_INTERP
|
|
attribute vec2 uv_attrib; // attrib:4
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV2_INTERP
|
|
attribute vec2 uv2_attrib; // attrib:5
|
|
#endif
|
|
|
|
#ifdef USE_SKELETON
|
|
|
|
#ifdef USE_SKELETON_SOFTWARE
|
|
|
|
attribute highp vec4 bone_transform_row_0; // attrib:9
|
|
attribute highp vec4 bone_transform_row_1; // attrib:10
|
|
attribute highp vec4 bone_transform_row_2; // attrib:11
|
|
|
|
#else
|
|
|
|
attribute vec4 bone_ids; // attrib:6
|
|
attribute highp vec4 bone_weights; // attrib:7
|
|
|
|
uniform highp sampler2D bone_transforms; // texunit:-1
|
|
uniform ivec2 skeleton_texture_size;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#ifdef USE_INSTANCING
|
|
|
|
attribute highp vec4 instance_xform_row_0; // attrib:12
|
|
attribute highp vec4 instance_xform_row_1; // attrib:13
|
|
attribute highp vec4 instance_xform_row_2; // attrib:14
|
|
|
|
attribute highp vec4 instance_color; // attrib:15
|
|
attribute highp vec4 instance_custom_data; // attrib:8
|
|
|
|
#endif
|
|
|
|
|
|
|
|
//
|
|
// uniforms
|
|
//
|
|
|
|
uniform mat4 camera_matrix;
|
|
uniform mat4 camera_inverse_matrix;
|
|
uniform mat4 projection_matrix;
|
|
uniform mat4 projection_inverse_matrix;
|
|
|
|
uniform mat4 world_transform;
|
|
|
|
uniform highp float time;
|
|
|
|
uniform float normal_mult;
|
|
|
|
#ifdef RENDER_DEPTH
|
|
uniform float light_bias;
|
|
uniform float light_normal_bias;
|
|
#endif
|
|
|
|
|
|
//
|
|
// varyings
|
|
//
|
|
|
|
varying highp vec3 vertex_interp;
|
|
varying vec3 normal_interp;
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
varying vec3 tangent_interp;
|
|
varying vec3 binormal_interp;
|
|
#endif
|
|
|
|
#ifdef ENABLE_COLOR_INTERP
|
|
varying vec4 color_interp;
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV_INTERP
|
|
varying vec2 uv_interp;
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV2_INTERP
|
|
varying vec2 uv2_interp;
|
|
#endif
|
|
|
|
|
|
VERTEX_SHADER_GLOBALS
|
|
|
|
void main() {
|
|
|
|
highp vec4 vertex = vertex_attrib;
|
|
|
|
mat4 world_matrix = world_transform;
|
|
|
|
#ifdef USE_INSTANCING
|
|
{
|
|
highp mat4 m = mat4(instance_xform_row_0,
|
|
instance_xform_row_1,
|
|
instance_xform_row_2,
|
|
vec4(0.0, 0.0, 0.0, 1.0));
|
|
world_matrix = world_matrix * transpose(m);
|
|
}
|
|
#endif
|
|
|
|
vec3 normal = normal_attrib * normal_mult;
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
vec3 tangent = tangent_attrib.xyz;
|
|
tangent *= normal_mult;
|
|
float binormalf = tangent_attrib.a;
|
|
vec3 binormal = normalize(cross(normal, tangent) * binormalf);
|
|
#endif
|
|
|
|
#ifdef ENABLE_COLOR_INTERP
|
|
color_interp = color_attrib;
|
|
#ifdef USE_INSTANCING
|
|
color_interp *= instance_color;
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV_INTERP
|
|
uv_interp = uv_attrib;
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV2_INTERP
|
|
uv2_interp = uv2_attrib;
|
|
#endif
|
|
|
|
#if !defined(SKIP_TRANSFORM_USED) && defined(VERTEX_WORLD_COORDS_USED)
|
|
vertex = world_matrix * vertex;
|
|
normal = normalize((world_matrix * vec4(normal, 0.0)).xyz);
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
|
|
tangent = normalize((world_matrix * vec4(tangent, 0.0)),xyz);
|
|
binormal = normalize((world_matrix * vec4(binormal, 0.0)).xyz);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef USE_SKELETON
|
|
|
|
highp mat4 bone_transform = mat4(1.0);
|
|
|
|
#ifdef USE_SKELETON_SOFTWARE
|
|
// passing the transform as attributes
|
|
|
|
bone_transform[0] = vec4(bone_transform_row_0.x, bone_transform_row_1.x, bone_transform_row_2.x, 0.0);
|
|
bone_transform[1] = vec4(bone_transform_row_0.y, bone_transform_row_1.y, bone_transform_row_2.y, 0.0);
|
|
bone_transform[2] = vec4(bone_transform_row_0.z, bone_transform_row_1.z, bone_transform_row_2.z, 0.0);
|
|
bone_transform[3] = vec4(bone_transform_row_0.w, bone_transform_row_1.w, bone_transform_row_2.w, 1.0);
|
|
|
|
#else
|
|
// look up transform from the "pose texture"
|
|
{
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
ivec2 tex_ofs = ivec2(int(bone_ids[i]) * 3, 0);
|
|
|
|
highp mat4 b = mat4(texel2DFetch(bone_transforms, skeleton_texture_size, tex_ofs + ivec2(0, 0)),
|
|
texel2DFetch(bone_transforms, skeleton_texture_size, tex_ofs + ivec2(1, 0)),
|
|
texel2DFetch(bone_transforms, skeleton_texture_size, tex_ofs + ivec2(2, 0)),
|
|
vec4(0.0, 0.0, 0.0, 1.0));
|
|
|
|
bone_transform += transpose(b) * bone_weights[i];
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
world_matrix = bone_transform * world_matrix;
|
|
#endif
|
|
|
|
|
|
#ifdef USE_INSTANCING
|
|
vec4 instance_custom = instance_custom_data;
|
|
#else
|
|
vec4 instance_custom = vec4(0.0);
|
|
|
|
#endif
|
|
|
|
|
|
mat4 modelview = camera_matrix * world_matrix;
|
|
|
|
#define world_transform world_matrix
|
|
|
|
{
|
|
|
|
VERTEX_SHADER_CODE
|
|
|
|
}
|
|
|
|
vec4 outvec = vertex;
|
|
|
|
// use local coordinates
|
|
#if !defined(SKIP_TRANSFORM_USED) && !defined(VERTEX_WORLD_COORDS_USED)
|
|
vertex = modelview * vertex;
|
|
normal = normalize((modelview * vec4(normal, 0.0)).xyz);
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
tangent = normalize((modelview * vec4(tangent, 0.0)).xyz);
|
|
binormal = normalize((modelview * vec4(binormal, 0.0)).xyz);
|
|
#endif
|
|
#endif
|
|
|
|
#if !defined(SKIP_TRANSFORM_USED) && defined(VERTEX_WORLD_COORDS_USED)
|
|
vertex = camera_matrix * vertex;
|
|
normal = normalize((camera_matrix * vec4(normal, 0.0)).xyz);
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
tangent = normalize((camera_matrix * vec4(tangent, 0.0)).xyz);
|
|
binormal = normalize((camera_matrix * vec4(binormal, 0.0)).xyz);
|
|
#endif
|
|
#endif
|
|
|
|
vertex_interp = vertex.xyz;
|
|
normal_interp = normal;
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
tangent_interp = tangent;
|
|
binormal_interp = binormal;
|
|
#endif
|
|
|
|
#ifdef RENDER_DEPTH
|
|
|
|
float z_ofs = light_bias;
|
|
z_ofs += (1.0 - abs(normal_interp.z)) * light_normal_bias;
|
|
|
|
vertex_interp.z -= z_ofs;
|
|
|
|
#endif
|
|
|
|
gl_Position = projection_matrix * vec4(vertex_interp, 1.0);
|
|
|
|
}
|
|
|
|
[fragment]
|
|
#extension GL_ARB_shader_texture_lod : require
|
|
|
|
#ifdef USE_GLES_OVER_GL
|
|
#define mediump
|
|
#define highp
|
|
#else
|
|
precision mediump float;
|
|
precision mediump int;
|
|
#endif
|
|
|
|
#include "stdlib.glsl"
|
|
|
|
#define M_PI 3.14159265359
|
|
|
|
//
|
|
// uniforms
|
|
//
|
|
|
|
uniform mat4 camera_matrix;
|
|
uniform mat4 camera_inverse_matrix;
|
|
uniform mat4 projection_matrix;
|
|
uniform mat4 projection_inverse_matrix;
|
|
|
|
uniform mat4 world_transform;
|
|
|
|
uniform highp float time;
|
|
|
|
|
|
#ifdef SCREEN_UV_USED
|
|
uniform vec2 screen_pixel_size;
|
|
#endif
|
|
|
|
uniform highp sampler2D depth_buffer; //texunit:-5
|
|
|
|
#if defined(SCREEN_TEXTURE_USED)
|
|
uniform highp sampler2D screen_texture; //texunit:-6
|
|
#endif
|
|
|
|
#ifdef USE_RADIANCE_MAP
|
|
|
|
#define RADIANCE_MAX_LOD 6.0
|
|
|
|
uniform samplerCube radiance_map; // texunit:-2
|
|
|
|
uniform mat4 radiance_inverse_xform;
|
|
|
|
#endif
|
|
|
|
uniform float bg_energy;
|
|
|
|
uniform float ambient_sky_contribution;
|
|
uniform vec4 ambient_color;
|
|
uniform float ambient_energy;
|
|
|
|
#ifdef LIGHT_PASS
|
|
|
|
#define LIGHT_TYPE_DIRECTIONAL 0
|
|
#define LIGHT_TYPE_OMNI 1
|
|
#define LIGHT_TYPE_SPOT 2
|
|
|
|
// general for all lights
|
|
uniform int light_type;
|
|
|
|
uniform float light_energy;
|
|
uniform vec4 light_color;
|
|
uniform float light_specular;
|
|
|
|
// directional
|
|
uniform vec3 light_direction;
|
|
|
|
// omni
|
|
uniform vec3 light_position;
|
|
|
|
uniform float light_range;
|
|
uniform vec4 light_attenuation;
|
|
|
|
// spot
|
|
uniform float light_spot_attenuation;
|
|
uniform float light_spot_range;
|
|
uniform float light_spot_angle;
|
|
|
|
|
|
// shadows
|
|
uniform highp sampler2D light_shadow_atlas; //texunit:-4
|
|
uniform float light_has_shadow;
|
|
|
|
uniform mat4 light_shadow_matrix;
|
|
uniform vec4 light_clamp;
|
|
|
|
// directional shadow
|
|
|
|
uniform highp sampler2D light_directional_shadow; // texunit:-4
|
|
uniform vec4 light_split_offsets;
|
|
|
|
uniform mat4 light_shadow_matrix1;
|
|
uniform mat4 light_shadow_matrix2;
|
|
uniform mat4 light_shadow_matrix3;
|
|
uniform mat4 light_shadow_matrix4;
|
|
#endif
|
|
|
|
|
|
//
|
|
// varyings
|
|
//
|
|
|
|
varying highp vec3 vertex_interp;
|
|
varying vec3 normal_interp;
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
varying vec3 tangent_interp;
|
|
varying vec3 binormal_interp;
|
|
#endif
|
|
|
|
#ifdef ENABLE_COLOR_INTERP
|
|
varying vec4 color_interp;
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV_INTERP
|
|
varying vec2 uv_interp;
|
|
#endif
|
|
|
|
#ifdef ENABLE_UV2_INTERP
|
|
varying vec2 uv2_interp;
|
|
#endif
|
|
|
|
varying vec3 view_interp;
|
|
|
|
vec3 metallic_to_specular_color(float metallic, float specular, vec3 albedo) {
|
|
float dielectric = (0.034 * 2.0) * specular;
|
|
// energy conservation
|
|
return mix(vec3(dielectric), albedo, metallic); // TODO: reference?
|
|
}
|
|
|
|
FRAGMENT_SHADER_GLOBALS
|
|
|
|
|
|
#ifdef LIGHT_PASS
|
|
void light_compute(vec3 N,
|
|
vec3 L,
|
|
vec3 V,
|
|
vec3 B,
|
|
vec3 T,
|
|
vec3 light_color,
|
|
vec3 attenuation,
|
|
vec3 diffuse_color,
|
|
vec3 transmission,
|
|
float specular_blob_intensity,
|
|
float roughness,
|
|
float metallic,
|
|
float rim,
|
|
float rim_tint,
|
|
float clearcoat,
|
|
float clearcoat_gloss,
|
|
float anisotropy,
|
|
inout vec3 diffuse_light,
|
|
inout vec3 specular_light) {
|
|
|
|
float NdotL = dot(N, L);
|
|
float cNdotL = max(NdotL, 0.0);
|
|
float NdotV = dot(N, V);
|
|
float cNdotV = max(NdotV, 0.0);
|
|
|
|
{
|
|
// calculate diffuse reflection
|
|
|
|
// TODO hardcode Oren Nayar for now
|
|
float diffuse_brdf_NL;
|
|
|
|
diffuse_brdf_NL = max(0.0,(NdotL + roughness) / ((1.0 + roughness) * (1.0 + roughness)));
|
|
// diffuse_brdf_NL = cNdotL * (1.0 / M_PI);
|
|
|
|
diffuse_light += light_color * diffuse_color * diffuse_brdf_NL * attenuation;
|
|
}
|
|
|
|
{
|
|
// calculate specular reflection
|
|
|
|
vec3 R = normalize(-reflect(L,N));
|
|
float cRdotV = max(dot(R, V), 0.0);
|
|
float blob_intensity = pow(cRdotV, (1.0 - roughness) * 256.0);
|
|
specular_light += light_color * attenuation * blob_intensity * specular_blob_intensity;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
// shadows
|
|
|
|
float sample_shadow(highp sampler2D shadow,
|
|
vec2 shadow_pixel_size,
|
|
vec2 pos,
|
|
float depth,
|
|
vec4 clamp_rect)
|
|
{
|
|
// vec4 depth_value = texture2D(shadow, pos);
|
|
|
|
// return depth_value.z;
|
|
return texture2DProj(shadow, vec4(pos, depth, 1.0)).r;
|
|
// return (depth_value.x + depth_value.y + depth_value.z + depth_value.w) / 4.0;
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
void main()
|
|
{
|
|
|
|
highp vec3 vertex = vertex_interp;
|
|
vec3 albedo = vec3(1.0);
|
|
vec3 transmission = vec3(0.0);
|
|
float metallic = 0.0;
|
|
float specular = 0.5;
|
|
vec3 emission = vec3(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 = 0.0;
|
|
vec2 anisotropy_flow = vec2(1.0, 0.0);
|
|
|
|
float alpha = 1.0;
|
|
float side = 1.0;
|
|
|
|
#if defined(ENABLE_AO)
|
|
float ao = 1.0;
|
|
float ao_light_affect = 0.0;
|
|
#endif
|
|
|
|
|
|
#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP)
|
|
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_NORMALMAP)
|
|
vec3 normalmap = vec3(0.5);
|
|
#endif
|
|
float normaldepth = 1.0;
|
|
|
|
|
|
#ifdef ALPHA_SCISSOR_USED
|
|
float alpha_scissor = 0.5;
|
|
#endif
|
|
|
|
#ifdef SCREEN_UV_USED
|
|
vec2 screen_uv = gl_FragCoord.xy * screen_pixel_size;
|
|
#endif
|
|
|
|
{
|
|
|
|
FRAGMENT_SHADER_CODE
|
|
|
|
|
|
}
|
|
|
|
#if defined(ENABLE_NORMALMAP)
|
|
normalmap.xy = normalmap.xy * 2.0 - 1.0;
|
|
normalmap.z = sqrt(max(0.0, 1.0 - dot(normalmap.xy, normalmap.xy)));
|
|
|
|
// normal = normalize(mix(normal_interp, tangent * normalmap.x + binormal * normalmap.y + normal * normalmap.z, normaldepth)) * side;
|
|
normal = normalmap;
|
|
#endif
|
|
|
|
normal = normalize(normal);
|
|
|
|
vec3 N = normal;
|
|
|
|
vec3 specular_light = vec3(0.0, 0.0, 0.0);
|
|
vec3 diffuse_light = vec3(0.0, 0.0, 0.0);
|
|
|
|
vec3 ambient_light = vec3(0.0, 0.0, 0.0);
|
|
|
|
vec3 env_reflection_light = vec3(0.0, 0.0, 0.0);
|
|
|
|
vec3 eye_position = -normalize(vertex_interp);
|
|
|
|
#ifdef ALPHA_SCISSOR_USED
|
|
if (alpha < alpha_scissor) {
|
|
discard;
|
|
}
|
|
#endif
|
|
|
|
//
|
|
// Lighting
|
|
//
|
|
#ifdef LIGHT_PASS
|
|
|
|
if (light_type == LIGHT_TYPE_OMNI) {
|
|
vec3 light_vec = light_position - vertex;
|
|
float light_length = length(light_vec);
|
|
|
|
float normalized_distance = light_length / light_range;
|
|
|
|
float omni_attenuation = pow(1.0 - normalized_distance, light_attenuation.w);
|
|
|
|
vec3 attenuation = vec3(omni_attenuation);
|
|
|
|
if (light_has_shadow > 0.5) {
|
|
highp vec3 splane = (light_shadow_matrix * vec4(vertex, 1.0)).xyz;
|
|
float shadow_len = length(splane);
|
|
|
|
splane = normalize(splane);
|
|
|
|
vec4 clamp_rect = light_clamp;
|
|
|
|
if (splane.z >= 0.0) {
|
|
splane.z += 1.0;
|
|
|
|
clamp_rect.y += clamp_rect.w;
|
|
} else {
|
|
splane.z = 1.0 - splane.z;
|
|
}
|
|
|
|
splane.xy /= splane.z;
|
|
splane.xy = splane.xy * 0.5 + 0.5;
|
|
splane.z = shadow_len / light_range;
|
|
|
|
splane.xy = clamp_rect.xy + splane.xy * clamp_rect.zw;
|
|
|
|
float shadow = sample_shadow(light_shadow_atlas, vec2(0.0), splane.xy, splane.z, clamp_rect);
|
|
|
|
if (shadow > splane.z) {
|
|
} else {
|
|
attenuation = vec3(0.0);
|
|
}
|
|
}
|
|
|
|
light_compute(normal,
|
|
normalize(light_vec),
|
|
eye_position,
|
|
binormal,
|
|
tangent,
|
|
light_color.xyz * light_energy,
|
|
attenuation,
|
|
albedo,
|
|
transmission,
|
|
specular * light_specular,
|
|
roughness,
|
|
metallic,
|
|
rim,
|
|
rim_tint,
|
|
clearcoat,
|
|
clearcoat_gloss,
|
|
anisotropy,
|
|
diffuse_light,
|
|
specular_light);
|
|
|
|
} else if (light_type == LIGHT_TYPE_DIRECTIONAL) {
|
|
|
|
vec3 light_vec = -light_direction;
|
|
vec3 attenuation = vec3(1.0, 1.0, 1.0);
|
|
|
|
float depth_z = -vertex.z;
|
|
|
|
if (light_has_shadow > 0.5) {
|
|
|
|
#ifdef LIGHT_USE_PSSM4
|
|
if (depth_z < light_split_offsets.w) {
|
|
#elif defined(LIGHT_USE_PSSM2)
|
|
if (depth_z < light_split_offsets.y) {
|
|
#else
|
|
if (depth_z < light_split_offsets.x) {
|
|
#endif
|
|
|
|
vec3 pssm_coord;
|
|
float pssm_fade = 0.0;
|
|
|
|
#ifdef LIGHT_USE_PSSM_BLEND
|
|
float pssm_blend;
|
|
vec3 pssm_coord2;
|
|
bool use_blend = true;
|
|
#endif
|
|
|
|
#ifdef LIGHT_USE_PSSM4
|
|
if (depth_z < light_split_offsets.y) {
|
|
if (depth_z < light_split_offsets.x) {
|
|
highp vec4 splane = (light_shadow_matrix1 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
|
|
#ifdef LIGHT_USE_PSSM_BLEND
|
|
splane = (light_shadow_matrix2 * vec4(vertex, 1.0));
|
|
pssm_coord2 = splane.xyz / splane.w;
|
|
|
|
pssm_blend = smoothstep(0.0, light_split_offsets.x, depth_z);
|
|
#endif
|
|
} else {
|
|
highp vec4 splane = (light_shadow_matrix2 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
|
|
#ifdef LIGHT_USE_PSSM_BLEND
|
|
splane = (light_shadow_matrix3 * vec4(vertex, 1.0));
|
|
pssm_coord2 = splane.xyz / splane.w;
|
|
|
|
pssm_blend = smoothstep(light_split_offsets.x, light_split_offsets.y, depth_z);
|
|
#endif
|
|
}
|
|
} else {
|
|
if (depth_z < light_split_offsets.z) {
|
|
|
|
highp vec4 splane = (light_shadow_matrix3 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
|
|
#if defined(LIGHT_USE_PSSM_BLEND)
|
|
splane = (light_shadow_matrix4 * vec4(vertex, 1.0));
|
|
pssm_coord2 = splane.xyz / splane.w;
|
|
pssm_blend = smoothstep(light_split_offsets.y, light_split_offsets.z, depth_z);
|
|
#endif
|
|
|
|
} else {
|
|
|
|
highp vec4 splane = (light_shadow_matrix4 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
pssm_fade = smoothstep(light_split_offsets.z, light_split_offsets.w, depth_z);
|
|
|
|
#if defined(LIGHT_USE_PSSM_BLEND)
|
|
use_blend = false;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#endif // LIGHT_USE_PSSM4
|
|
|
|
#ifdef LIGHT_USE_PSSM2
|
|
if (depth_z < light_split_offsets.x) {
|
|
|
|
highp vec4 splane = (light_shadow_matrix1 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
|
|
#ifdef LIGHT_USE_PSSM_BLEND
|
|
splane = (light_shadow_matrix2 * vec4(vertex, 1.0));
|
|
pssm_coord2 = splane.xyz / splane.w;
|
|
pssm_blend = smoothstep(0.0, light_split_offsets.x, depth_z);
|
|
#endif
|
|
} else {
|
|
highp vec4 splane = (light_shadow_matrix2 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
pssm_fade = smoothstep(light_split_offsets.x, light_split_offsets.y, depth_z);
|
|
#ifdef LIGHT_USE_PSSM_BLEND
|
|
use_blend = false;
|
|
#endif
|
|
}
|
|
|
|
#endif // LIGHT_USE_PSSM2
|
|
|
|
#if !defined(LIGHT_USE_PSSM4) && !defined(LIGHT_USE_PSSM2)
|
|
{
|
|
highp vec4 splane = (light_shadow_matrix1 * vec4(vertex, 1.0));
|
|
pssm_coord = splane.xyz / splane.w;
|
|
}
|
|
#endif
|
|
|
|
float shadow = sample_shadow(light_shadow_atlas, vec2(0.0), pssm_coord.xy, pssm_coord.z, light_clamp);
|
|
|
|
#ifdef LIGHT_USE_PSSM_BLEND
|
|
if (use_blend) {
|
|
shadow = mix(shadow, sample_shadow(light_shadow_atlas, vec2(0.0), pssm_coord2.xy, pssm_coord2.z, light_clamp), pssm_blend);
|
|
}
|
|
#endif
|
|
|
|
attenuation *= shadow;
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
light_compute(normal,
|
|
normalize(light_vec),
|
|
eye_position,
|
|
binormal,
|
|
tangent,
|
|
light_color.xyz * light_energy,
|
|
attenuation,
|
|
albedo,
|
|
transmission,
|
|
specular * light_specular,
|
|
roughness,
|
|
metallic,
|
|
rim,
|
|
rim_tint,
|
|
clearcoat,
|
|
clearcoat_gloss,
|
|
anisotropy,
|
|
diffuse_light,
|
|
specular_light);
|
|
} else if (light_type == LIGHT_TYPE_SPOT) {
|
|
|
|
vec3 light_att = vec3(1.0);
|
|
|
|
if (light_has_shadow > 0.5) {
|
|
highp vec4 splane = (light_shadow_matrix * vec4(vertex, 1.0));
|
|
splane.xyz /= splane.w;
|
|
|
|
float shadow = sample_shadow(light_shadow_atlas, vec2(0.0), splane.xy, splane.z, light_clamp);
|
|
|
|
if (shadow > splane.z) {
|
|
} else {
|
|
light_att = vec3(0.0);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
vec3 light_rel_vec = light_position - vertex;
|
|
float light_length = length(light_rel_vec);
|
|
float normalized_distance = light_length / light_range;
|
|
|
|
float spot_attenuation = pow(1.0 - normalized_distance, light_attenuation.w);
|
|
vec3 spot_dir = light_direction;
|
|
|
|
float spot_cutoff = light_spot_angle;
|
|
|
|
float scos = max(dot(-normalize(light_rel_vec), spot_dir), spot_cutoff);
|
|
float spot_rim = max(0.0001, (1.0 - scos) / (1.0 - spot_cutoff));
|
|
|
|
spot_attenuation *= 1.0 - pow(spot_rim, light_spot_attenuation);
|
|
|
|
light_att *= vec3(spot_attenuation);
|
|
|
|
light_compute(normal,
|
|
normalize(light_rel_vec),
|
|
eye_position,
|
|
binormal,
|
|
tangent,
|
|
light_color.xyz * light_energy,
|
|
light_att,
|
|
albedo,
|
|
transmission,
|
|
specular * light_specular,
|
|
roughness,
|
|
metallic,
|
|
rim,
|
|
rim_tint,
|
|
clearcoat,
|
|
clearcoat_gloss,
|
|
anisotropy,
|
|
diffuse_light,
|
|
specular_light);
|
|
}
|
|
|
|
gl_FragColor = vec4(ambient_light + diffuse_light + specular_light, alpha);
|
|
#else
|
|
|
|
#ifdef RENDER_DEPTH
|
|
|
|
#else
|
|
|
|
#ifdef USE_RADIANCE_MAP
|
|
|
|
|
|
vec3 ref_vec = reflect(-eye_position, N);
|
|
ref_vec = normalize((radiance_inverse_xform * vec4(ref_vec, 0.0)).xyz);
|
|
|
|
ref_vec.z *= -1.0;
|
|
|
|
env_reflection_light = textureCubeLod(radiance_map, ref_vec, roughness * RADIANCE_MAX_LOD).xyz * bg_energy;
|
|
|
|
{
|
|
vec3 ambient_dir = normalize((radiance_inverse_xform * vec4(normal, 0.0)).xyz);
|
|
vec3 env_ambient = textureCubeLod(radiance_map, ambient_dir, RADIANCE_MAX_LOD).xyz * bg_energy;
|
|
|
|
ambient_light = mix(ambient_color.rgb, env_ambient, ambient_sky_contribution);
|
|
|
|
}
|
|
|
|
ambient_light *= ambient_energy;
|
|
|
|
specular_light += env_reflection_light;
|
|
|
|
ambient_light *= albedo;
|
|
|
|
#if defined(ENABLE_AO)
|
|
ambient_light *= ao;
|
|
ao_light_affect = mix(1.0, ao, ao_light_affect);
|
|
specular_light *= ao_light_affect;
|
|
diffuse_light *= ao_light_affect;
|
|
#endif
|
|
|
|
diffuse_light *= 1.0 - metallic;
|
|
ambient_light *= 1.0 - metallic;
|
|
|
|
// environment BRDF approximation
|
|
|
|
// TODO shadeless
|
|
{
|
|
const vec4 c0 = vec4(-1.0, -0.0275, -0.572, 0.022);
|
|
const vec4 c1 = vec4( 1.0, 0.0425, 1.04, -0.04);
|
|
vec4 r = roughness * c0 + c1;
|
|
float ndotv = clamp(dot(normal,eye_position),0.0,1.0);
|
|
float a004 = min( r.x * r.x, exp2( -9.28 * ndotv ) ) * r.x + r.y;
|
|
vec2 AB = vec2( -1.04, 1.04 ) * a004 + r.zw;
|
|
|
|
vec3 specular_color = metallic_to_specular_color(metallic, specular, albedo);
|
|
specular_light *= AB.x * specular_color + AB.y;
|
|
}
|
|
|
|
|
|
gl_FragColor = vec4(ambient_light + diffuse_light + specular_light, alpha);
|
|
// gl_FragColor = vec4(normal, 1.0);
|
|
|
|
|
|
#else
|
|
gl_FragColor = vec4(albedo, alpha);
|
|
#endif
|
|
#endif // RENDER_DEPTH
|
|
|
|
|
|
#endif // lighting
|
|
|
|
|
|
}
|