1215 lines
29 KiB
GLSL
1215 lines
29 KiB
GLSL
[vertex]
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/*
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from VisualServer:
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ARRAY_VERTEX=0,
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ARRAY_NORMAL=1,
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ARRAY_TANGENT=2,
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ARRAY_COLOR=3,
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ARRAY_TEX_UV=4,
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ARRAY_TEX_UV2=5,
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ARRAY_BONES=6,
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ARRAY_WEIGHTS=7,
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ARRAY_INDEX=8,
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*/
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//hack to use uv if no uv present so it works with lightmap
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/* INPUT ATTRIBS */
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layout(location=0) in highp vec4 vertex_attrib;
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layout(location=1) in vec3 normal_attrib;
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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layout(location=2) in vec4 tangent_attrib;
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#endif
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#if defined(ENABLE_COLOR_INTERP)
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layout(location=3) in vec4 color_attrib;
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#endif
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#if defined(ENABLE_UV_INTERP)
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layout(location=4) in vec2 uv_attrib;
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#endif
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#if defined(ENABLE_UV2_INTERP)
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layout(location=5) in vec2 uv2_attrib;
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#endif
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uniform float normal_mult;
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#ifdef USE_SKELETON
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layout(location=6) in ivec4 bone_indices; // attrib:6
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layout(location=7) in vec4 bone_weights; // attrib:7
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#endif
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#ifdef USE_INSTANCING
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layout(location=8) in highp vec4 instance_xform0;
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layout(location=9) in highp vec4 instance_xform1;
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layout(location=10) in highp vec4 instance_xform2;
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layout(location=11) in lowp vec4 instance_color;
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#endif
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layout(std140) uniform SceneData { //ubo:0
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highp mat4 projection_matrix;
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highp mat4 camera_inverse_matrix;
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highp mat4 camera_matrix;
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highp vec4 time;
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highp vec4 ambient_light_color;
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highp vec4 bg_color;
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float ambient_energy;
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float bg_energy;
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float shadow_z_offset;
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float shadow_z_slope_scale;
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float shadow_dual_paraboloid_render_zfar;
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float shadow_dual_paraboloid_render_side;
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vec2 shadow_atlas_pixel_size;
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vec2 directional_shadow_pixel_size;
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float reflection_multiplier;
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};
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uniform highp mat4 world_transform;
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#ifdef USE_LIGHT_DIRECTIONAL
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layout(std140) uniform DirectionalLightData { //ubo:3
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highp vec4 light_pos_inv_radius;
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mediump vec4 light_direction_attenuation;
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mediump vec4 light_color_energy;
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mediump vec4 light_params; //cone attenuation, angle, specular, shadow enabled,
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mediump vec4 light_clamp;
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mediump vec4 shadow_color;
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highp mat4 shadow_matrix1;
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highp mat4 shadow_matrix2;
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highp mat4 shadow_matrix3;
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highp mat4 shadow_matrix4;
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mediump vec4 shadow_split_offsets;
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};
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#endif
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/* Varyings */
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out highp vec3 vertex_interp;
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out vec3 normal_interp;
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#if defined(ENABLE_COLOR_INTERP)
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out vec4 color_interp;
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#endif
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#if defined(ENABLE_UV_INTERP)
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out vec2 uv_interp;
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#endif
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#if defined(ENABLE_UV2_INTERP)
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out vec2 uv2_interp;
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#endif
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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out vec3 tangent_interp;
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out vec3 binormal_interp;
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#endif
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#if !defined(USE_DEPTH_SHADOWS) && defined(USE_SHADOW_PASS)
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varying vec4 position_interp;
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#endif
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VERTEX_SHADER_GLOBALS
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#if defined(USE_MATERIAL)
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layout(std140) uniform UniformData { //ubo:1
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MATERIAL_UNIFORMS
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};
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#endif
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#ifdef RENDER_SHADOW_DUAL_PARABOLOID
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out highp float dp_clip;
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#endif
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#ifdef USE_SKELETON
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layout(std140) uniform SkeletonData { //ubo:7
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mat3x4 skeleton[MAX_SKELETON_BONES];
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};
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#endif
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void main() {
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highp vec4 vertex = vertex_attrib; // vec4(vertex_attrib.xyz * data_attrib.x,1.0);
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highp mat4 modelview = camera_inverse_matrix * world_transform;
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vec3 normal = normal_attrib * normal_mult;
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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vec3 tangent = tangent_attrib.xyz;
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tangent*=normal_mult;
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float binormalf = tangent_attrib.a;
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#endif
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#if defined(ENABLE_COLOR_INTERP)
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color_interp = color_attrib;
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#endif
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#ifdef USE_SKELETON
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{
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//skeleton transform
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highp mat3x4 m=skeleton[bone_indices.x]*bone_weights.x;
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m+=skeleton[bone_indices.y]*bone_weights.y;
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m+=skeleton[bone_indices.z]*bone_weights.z;
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m+=skeleton[bone_indices.w]*bone_weights.w;
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vertex.xyz = vertex * m;
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normal = vec4(normal,0.0) * m;
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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tangent.xyz = vec4(tangent.xyz,0.0) * mn;
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#endif
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}
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#endif // USE_SKELETON1
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#ifdef USE_INSTANCING
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{
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highp mat3x4 m=mat3x4(instance_xform0,instance_xform1,instance_xform2);
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vertex.xyz = vertex * m;
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normal = vec4(normal,0.0) * m;
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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tangent.xyz = vec4(tangent.xyz,0.0) * mn;
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#endif
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#if defined(ENABLE_COLOR_INTERP)
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color_interp*=instance_color;
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#endif
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}
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#endif //USE_INSTANCING
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#if !defined(SKIP_TRANSFORM_USED)
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vertex = modelview * vertex;
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normal = normalize((modelview * vec4(normal,0.0)).xyz);
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#endif
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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# if !defined(SKIP_TRANSFORM_USED)
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tangent=normalize((modelview * vec4(tangent,0.0)).xyz);
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# endif
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vec3 binormal = normalize( cross(normal,tangent) * binormalf );
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#endif
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#if defined(ENABLE_UV_INTERP)
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uv_interp = uv_attrib;
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#endif
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#if defined(ENABLE_UV2_INTERP)
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uv2_interp = uv2_attrib;
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#endif
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{
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VERTEX_SHADER_CODE
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}
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vertex_interp = vertex.xyz;
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normal_interp = normal;
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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tangent_interp = tangent;
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binormal_interp = binormal;
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#endif
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#ifdef RENDER_SHADOW
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#ifdef RENDER_SHADOW_DUAL_PARABOLOID
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vertex_interp.z*= shadow_dual_paraboloid_render_side;
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normal_interp.z*= shadow_dual_paraboloid_render_side;
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dp_clip=vertex_interp.z; //this attempts to avoid noise caused by objects sent to the other parabolloid side due to bias
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//for dual paraboloid shadow mapping, this is the fastest but least correct way, as it curves straight edges
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highp vec3 vtx = vertex_interp+normalize(vertex_interp)*shadow_z_offset;
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highp float distance = length(vtx);
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vtx = normalize(vtx);
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vtx.xy/=1.0-vtx.z;
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vtx.z=(distance/shadow_dual_paraboloid_render_zfar);
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vtx.z=vtx.z * 2.0 - 1.0;
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vertex.xyz=vtx;
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vertex.w=1.0;
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#else
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float z_ofs = shadow_z_offset;
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z_ofs += (1.0-abs(normal_interp.z))*shadow_z_slope_scale;
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vertex_interp.z-=z_ofs;
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#endif //RENDER_SHADOW_DUAL_PARABOLOID
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#endif //RENDER_SHADOW
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#if !defined(SKIP_TRANSFORM_USED) && !defined(RENDER_SHADOW_DUAL_PARABOLOID)
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gl_Position = projection_matrix * vec4(vertex_interp,1.0);
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#else
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gl_Position = vertex;
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#endif
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}
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[fragment]
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#define M_PI 3.14159265359
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/* Varyings */
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#if defined(ENABLE_COLOR_INTERP)
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in vec4 color_interp;
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#endif
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#if defined(ENABLE_UV_INTERP)
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in vec2 uv_interp;
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#endif
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#if defined(ENABLE_UV2_INTERP)
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in vec2 uv2_interp;
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#endif
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#if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY)
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in vec3 tangent_interp;
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in vec3 binormal_interp;
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#endif
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in highp vec3 vertex_interp;
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in vec3 normal_interp;
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/* PBR CHANNELS */
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//used on forward mainly
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uniform bool no_ambient_light;
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uniform sampler2D brdf_texture; //texunit:-1
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#ifdef USE_RADIANCE_MAP
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uniform sampler2D radiance_map; //texunit:-2
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layout(std140) uniform Radiance { //ubo:2
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mat4 radiance_inverse_xform;
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vec3 radiance_box_min;
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vec3 radiance_box_max;
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float radiance_ambient_contribution;
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};
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#endif
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/* Material Uniforms */
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FRAGMENT_SHADER_GLOBALS
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#if defined(USE_MATERIAL)
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layout(std140) uniform UniformData {
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MATERIAL_UNIFORMS
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};
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#endif
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layout(std140) uniform SceneData {
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highp mat4 projection_matrix;
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highp mat4 camera_inverse_matrix;
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highp mat4 camera_matrix;
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highp vec4 time;
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highp vec4 ambient_light_color;
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highp vec4 bg_color;
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float ambient_energy;
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float bg_energy;
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float shadow_z_offset;
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float shadow_z_slope_scale;
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float shadow_dual_paraboloid_render_zfar;
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float shadow_dual_paraboloid_render_side;
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vec2 shadow_atlas_pixel_size;
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vec2 directional_shadow_pixel_size;
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float reflection_multiplier;
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};
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//directional light data
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#ifdef USE_LIGHT_DIRECTIONAL
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layout(std140) uniform DirectionalLightData {
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highp vec4 light_pos_inv_radius;
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mediump vec4 light_direction_attenuation;
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mediump vec4 light_color_energy;
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mediump vec4 light_params; //cone attenuation, angle, specular, shadow enabled,
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mediump vec4 light_clamp;
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mediump vec4 shadow_color;
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highp mat4 shadow_matrix1;
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highp mat4 shadow_matrix2;
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highp mat4 shadow_matrix3;
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highp mat4 shadow_matrix4;
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mediump vec4 shadow_split_offsets;
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};
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uniform highp sampler2DShadow directional_shadow; //texunit:-4
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#endif
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//omni and spot
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struct LightData {
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highp vec4 light_pos_inv_radius;
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mediump vec4 light_direction_attenuation;
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mediump vec4 light_color_energy;
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mediump vec4 light_params; //cone attenuation, angle, specular, shadow enabled,
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mediump vec4 light_clamp;
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mediump vec4 shadow_color;
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highp mat4 shadow_matrix;
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};
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layout(std140) uniform OmniLightData { //ubo:4
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LightData omni_lights[MAX_LIGHT_DATA_STRUCTS];
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};
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layout(std140) uniform SpotLightData { //ubo:5
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LightData spot_lights[MAX_LIGHT_DATA_STRUCTS];
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};
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uniform highp sampler2DShadow shadow_atlas; //texunit:-3
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struct ReflectionData {
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mediump vec4 box_extents;
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mediump vec4 box_offset;
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mediump vec4 params; // intensity, 0, interior , boxproject
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mediump vec4 ambient; //ambient color, energy
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mediump vec4 atlas_clamp;
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highp mat4 local_matrix; //up to here for spot and omni, rest is for directional
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//notes: for ambientblend, use distance to edge to blend between already existing global environment
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};
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layout(std140) uniform ReflectionProbeData { //ubo:6
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ReflectionData reflections[MAX_REFLECTION_DATA_STRUCTS];
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};
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uniform mediump sampler2D reflection_atlas; //texunit:-5
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#ifdef USE_FORWARD_LIGHTING
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uniform int omni_light_indices[MAX_FORWARD_LIGHTS];
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uniform int omni_light_count;
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uniform int spot_light_indices[MAX_FORWARD_LIGHTS];
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uniform int spot_light_count;
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uniform int reflection_indices[MAX_FORWARD_LIGHTS];
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uniform int reflection_count;
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#endif
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#ifdef USE_MULTIPLE_RENDER_TARGETS
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layout(location=0) out vec4 diffuse_buffer;
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layout(location=1) out vec4 specular_buffer;
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layout(location=2) out vec4 normal_mr_buffer;
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#else
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layout(location=0) out vec4 frag_color;
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#endif
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// GGX Specular
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// Source: http://www.filmicworlds.com/images/ggx-opt/optimized-ggx.hlsl
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float G1V(float dotNV, float k)
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{
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return 1.0 / (dotNV * (1.0 - k) + k);
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}
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float SchlickFresnel(float u)
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{
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float m = 1.0-u;
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float m2 = m*m;
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return m2*m2*m; // pow(m,5)
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}
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float GTR1(float NdotH, float a)
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{
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if (a >= 1.0) return 1.0/M_PI;
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float a2 = a*a;
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float t = 1.0 + (a2-1.0)*NdotH*NdotH;
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return (a2-1.0) / (M_PI*log(a2)*t);
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}
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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) {
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float dotNL = max(dot(N,L), 0.0 );
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float dotNV = max(dot(N,V), 0.0 );
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#if defined(LIGHT_USE_RIM)
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float rim_light = pow(1.0-dotNV,(1.0-roughness)*16.0);
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diffuse += rim_light * rim * mix(vec3(1.0),diffuse_color,rim_tint) * light_color;
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#endif
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diffuse += dotNL * light_color * diffuse_color;
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if (roughness > 0.0) {
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float alpha = roughness * roughness;
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vec3 H = normalize(V + L);
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float dotNH = max(dot(N,H), 0.0 );
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float dotLH = max(dot(L,H), 0.0 );
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// D
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#if defined(LIGHT_USE_ANISOTROPY)
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float aspect = sqrt(1.0-anisotropy*0.9);
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float rx = roughness/aspect;
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float ry = roughness*aspect;
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float ax = rx*rx;
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float ay = ry*ry;
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float dotXH = dot( T, H );
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float dotYH = dot( B, H );
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float pi = M_PI;
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float denom = dotXH*dotXH / (ax*ax) + dotYH*dotYH / (ay*ay) + dotNH*dotNH;
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float D = 1.0 / ( pi * ax*ay * denom*denom );
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#else
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float alphaSqr = alpha * alpha;
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float pi = M_PI;
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float denom = dotNH * dotNH * (alphaSqr - 1.0) + 1.0;
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float D = alphaSqr / (pi * denom * denom);
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#endif
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// F
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float F0 = 1.0;
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float dotLH5 = SchlickFresnel( dotLH );
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float F = F0 + (1.0 - F0) * (dotLH5);
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// V
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float k = alpha / 2.0f;
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float vis = G1V(dotNL, k) * G1V(dotNV, k);
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float speci = dotNL * D * F * vis;
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specular += speci * light_color * specular_color * specular_blob_intensity;
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|
|
|
#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_SHADOW_DUAL_PARABOLOID
|
|
|
|
in highp float dp_clip;
|
|
|
|
#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;
|
|
|
|
}
|
|
}
|
|
|
|
void main() {
|
|
|
|
#ifdef RENDER_SHADOW_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
|
|
|
|
{
|
|
|
|
|
|
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 (diffuse.a<0.99) {
|
|
//used for doublepass and shadowmapping
|
|
discard;
|
|
}
|
|
#endif
|
|
|
|
/////////////////////// LIGHTING //////////////////////////////
|
|
|
|
//apply energy conservation
|
|
vec3 diffuse=mix(albedo,vec3(0.0),specular);
|
|
specular = max(vec3(0.04),specular);
|
|
|
|
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_SHADOW
|
|
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
|
|
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if (gl_FragCoord.w > shadow_split_offsets.y) {
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if (gl_FragCoord.w > shadow_split_offsets.x) {
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highp vec4 splane=(shadow_matrix1 * vec4(vertex,1.0));
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pssm_coord=splane.xyz/splane.w;
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#if defined(LIGHT_USE_PSSM_BLEND)
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splane=(shadow_matrix2 * vec4(vertex,1.0));
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pssm_coord2=splane.xyz/splane.w;
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pssm_blend=smoothstep(0.0,light_pssm_split_inv.x,w_inv);
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#endif
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|
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} else {
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|
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highp vec4 splane=(shadow_matrix2 * vec4(vertex,1.0));
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pssm_coord=splane.xyz/splane.w;
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|
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#if defined(LIGHT_USE_PSSM_BLEND)
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splane=(shadow_matrix3 * vec4(vertex,1.0));
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pssm_coord2=splane.xyz/splane.w;
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pssm_blend=smoothstep(light_pssm_split_inv.x,light_pssm_split_inv.y,w_inv);
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#endif
|
|
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}
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} else {
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|
|
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if (gl_FragCoord.w > shadow_split_offsets.z) {
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|
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highp vec4 splane=(shadow_matrix3 * vec4(vertex,1.0));
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pssm_coord=splane.xyz/splane.w;
|
|
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#if defined(LIGHT_USE_PSSM_BLEND)
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splane=(shadow_matrix4 * vec4(vertex,1.0));
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pssm_coord2=splane.xyz/splane.w;
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pssm_blend=smoothstep(light_pssm_split_inv.y,light_pssm_split_inv.z,w_inv);
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#endif
|
|
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} else {
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highp vec4 splane=(shadow_matrix4 * vec4(vertex,1.0));
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pssm_coord=splane.xyz/splane.w;
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diffuse_light*=vec3(1.0,0.4,1.0);
|
|
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#if defined(LIGHT_USE_PSSM_BLEND)
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use_blend=false;
|
|
|
|
#endif
|
|
|
|
}
|
|
}
|
|
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#endif //LIGHT_USE_PSSM4
|
|
|
|
#ifdef LIGHT_USE_PSSM2
|
|
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|
if (gl_FragCoord.w > shadow_split_offsets.x) {
|
|
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|
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,diffuse,specular,light_params.z,roughness,rim,rim_tint,clearcoat,clearcoat_gloss,anisotropy,diffuse_light,specular_light);
|
|
|
|
|
|
#endif //#USE_LIGHT_DIRECTIONAL
|
|
|
|
|
|
#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,diffuse,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,diffuse,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_SHADOW
|
|
//nothing happens, so a tree-ssa optimizer will result in no fragment shader :)
|
|
#else
|
|
|
|
specular_light*=reflection_multiplier;
|
|
specular_light*=specular;
|
|
ambient_light*=albedo; //ambient must be multiplied by albedo at the end
|
|
|
|
#if defined(ENABLE_AO)
|
|
ambient_light*=ao;
|
|
#endif
|
|
|
|
#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/total_ambient : 0.0;
|
|
#endif //ENABLE_AO
|
|
|
|
diffuse_buffer=vec4(emission+diffuse_light+ambient_light,ambient_scale);
|
|
specular_buffer=vec4(specular_light,0.0);
|
|
normal_mr_buffer=vec4(normal.x,normal.y,max(specular.r,max(specular.g,specular.b)),roughness);
|
|
|
|
#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_SHADOW
|
|
|
|
|
|
}
|
|
|
|
|