281 lines
8.6 KiB
GLSL
281 lines
8.6 KiB
GLSL
/**
|
|
* @file class1\deferred\pbralphaF.glsl
|
|
*
|
|
* $LicenseInfo:firstyear=2022&license=viewerlgpl$
|
|
* Second Life Viewer Source Code
|
|
* Copyright (C) 2022, Linden Research, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation;
|
|
* version 2.1 of the License only.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
|
|
* $/LicenseInfo$
|
|
*/
|
|
|
|
/*[EXTRA_CODE_HERE]*/
|
|
|
|
#ifndef IS_HUD
|
|
|
|
uniform sampler2D diffuseMap; //always in sRGB space
|
|
uniform sampler2D bumpMap;
|
|
uniform sampler2D emissiveMap;
|
|
uniform sampler2D specularMap; // PBR: Packed: Occlusion, Metal, Roughness
|
|
|
|
uniform float metallicFactor;
|
|
uniform float roughnessFactor;
|
|
uniform vec3 emissiveColor;
|
|
|
|
#if defined(HAS_SUN_SHADOW) || defined(HAS_SSAO)
|
|
uniform sampler2D lightMap;
|
|
#endif
|
|
|
|
uniform int sun_up_factor;
|
|
uniform vec3 sun_dir;
|
|
uniform vec3 moon_dir;
|
|
|
|
out vec4 frag_color;
|
|
|
|
in vec3 vary_fragcoord;
|
|
|
|
#ifdef HAS_SUN_SHADOW
|
|
uniform vec2 screen_res;
|
|
#endif
|
|
|
|
in vec3 vary_position;
|
|
|
|
in vec2 base_color_texcoord;
|
|
in vec2 normal_texcoord;
|
|
in vec2 metallic_roughness_texcoord;
|
|
in vec2 emissive_texcoord;
|
|
|
|
in vec4 vertex_color;
|
|
|
|
in vec3 vary_normal;
|
|
in vec3 vary_tangent;
|
|
flat in float vary_sign;
|
|
|
|
|
|
#ifdef HAS_ALPHA_MASK
|
|
uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
|
|
#endif
|
|
|
|
// Lights
|
|
// See: LLRender::syncLightState()
|
|
uniform vec4 light_position[8];
|
|
uniform vec3 light_direction[8]; // spot direction
|
|
uniform vec4 light_attenuation[8]; // linear, quadratic, is omni, unused, See: LLPipeline::setupHWLights() and syncLightState()
|
|
uniform vec3 light_diffuse[8];
|
|
uniform vec2 light_deferred_attenuation[8]; // light size and falloff
|
|
|
|
vec3 srgb_to_linear(vec3 c);
|
|
vec3 linear_to_srgb(vec3 c);
|
|
|
|
void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
|
|
vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
|
|
|
|
void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist);
|
|
float calcLegacyDistanceAttenuation(float distance, float falloff);
|
|
float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
|
|
void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
|
|
vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit_linear);
|
|
|
|
void mirrorClip(vec3 pos);
|
|
void waterClip(vec3 pos);
|
|
|
|
void calcDiffuseSpecular(vec3 baseColor, float metallic, inout vec3 diffuseColor, inout vec3 specularColor);
|
|
|
|
vec3 pbrBaseLight(vec3 diffuseColor,
|
|
vec3 specularColor,
|
|
float metallic,
|
|
vec3 pos,
|
|
vec3 norm,
|
|
float perceptualRoughness,
|
|
vec3 light_dir,
|
|
vec3 sunlit,
|
|
float scol,
|
|
vec3 radiance,
|
|
vec3 irradiance,
|
|
vec3 colorEmissive,
|
|
float ao,
|
|
vec3 additive,
|
|
vec3 atten);
|
|
|
|
vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
|
|
float perceptualRoughness,
|
|
float metallic,
|
|
vec3 n, // normal
|
|
vec3 v, // surface point to camera
|
|
vec3 l); //surface point to light
|
|
|
|
vec3 pbrCalcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor,
|
|
float perceptualRoughness,
|
|
float metallic,
|
|
vec3 n, // normal
|
|
vec3 p, // pixel position
|
|
vec3 v, // view vector (negative normalized pixel position)
|
|
vec3 lp, // light position
|
|
vec3 ld, // light direction (for spotlights)
|
|
vec3 lightColor,
|
|
float lightSize, float falloff, float is_pointlight, float ambiance);
|
|
|
|
void main()
|
|
{
|
|
mirrorClip(vary_position);
|
|
|
|
vec3 color = vec3(0,0,0);
|
|
|
|
vec3 light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir;
|
|
vec3 pos = vary_position;
|
|
|
|
waterClip(pos);
|
|
|
|
vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
|
|
basecolor.rgb = srgb_to_linear(basecolor.rgb);
|
|
#ifdef HAS_ALPHA_MASK
|
|
if (basecolor.a < minimum_alpha)
|
|
{
|
|
discard;
|
|
}
|
|
#endif
|
|
|
|
vec3 col = vertex_color.rgb * basecolor.rgb;
|
|
|
|
vec3 vNt = texture(bumpMap, normal_texcoord.xy).xyz*2.0-1.0;
|
|
float sign = vary_sign;
|
|
vec3 vN = vary_normal;
|
|
vec3 vT = vary_tangent.xyz;
|
|
|
|
vec3 vB = sign * cross(vN, vT);
|
|
vec3 norm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
|
|
|
|
norm *= gl_FrontFacing ? 1.0 : -1.0;
|
|
|
|
float scol = 1.0;
|
|
vec3 sunlit;
|
|
vec3 amblit;
|
|
vec3 additive;
|
|
vec3 atten;
|
|
calcAtmosphericVarsLinear(pos.xyz, norm, light_dir, sunlit, amblit, additive, atten);
|
|
|
|
vec3 sunlit_linear = srgb_to_linear(sunlit);
|
|
|
|
vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
|
|
|
|
#ifdef HAS_SUN_SHADOW
|
|
scol = sampleDirectionalShadow(pos.xyz, norm.xyz, frag);
|
|
#endif
|
|
|
|
vec3 orm = texture(specularMap, metallic_roughness_texcoord.xy).rgb; //orm is packed into "emissiveRect" to keep the data in linear color space
|
|
|
|
float perceptualRoughness = orm.g * roughnessFactor;
|
|
float metallic = orm.b * metallicFactor;
|
|
float ao = orm.r;
|
|
|
|
// emissiveColor is the emissive color factor from GLTF and is already in linear space
|
|
vec3 colorEmissive = emissiveColor;
|
|
// emissiveMap here is a vanilla RGB texture encoded as sRGB, manually convert to linear
|
|
colorEmissive *= srgb_to_linear(texture(emissiveMap, emissive_texcoord.xy).rgb);
|
|
|
|
// PBR IBL
|
|
float gloss = 1.0 - perceptualRoughness;
|
|
vec3 irradiance = vec3(0);
|
|
vec3 radiance = vec3(0);
|
|
sampleReflectionProbes(irradiance, radiance, vary_position.xy*0.5+0.5, pos.xyz, norm.xyz, gloss, true, amblit);
|
|
|
|
vec3 diffuseColor;
|
|
vec3 specularColor;
|
|
calcDiffuseSpecular(col.rgb, metallic, diffuseColor, specularColor);
|
|
|
|
vec3 v = -normalize(pos.xyz);
|
|
|
|
color = pbrBaseLight(diffuseColor, specularColor, metallic, v, norm.xyz, perceptualRoughness, light_dir, sunlit_linear, scol, radiance, irradiance, colorEmissive, ao, additive, atten);
|
|
|
|
vec3 light = vec3(0);
|
|
|
|
// Punctual lights
|
|
#define LIGHT_LOOP(i) light += pbrCalcPointLightOrSpotLight(diffuseColor, specularColor, perceptualRoughness, metallic, norm.xyz, pos.xyz, v, light_position[i].xyz, light_direction[i].xyz, light_diffuse[i].rgb, light_deferred_attenuation[i].x, light_deferred_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w);
|
|
|
|
LIGHT_LOOP(1)
|
|
LIGHT_LOOP(2)
|
|
LIGHT_LOOP(3)
|
|
LIGHT_LOOP(4)
|
|
LIGHT_LOOP(5)
|
|
LIGHT_LOOP(6)
|
|
LIGHT_LOOP(7)
|
|
|
|
color.rgb += light.rgb;
|
|
|
|
color.rgb = applySkyAndWaterFog(pos.xyz, additive, atten, vec4(color, 1.0)).rgb;
|
|
|
|
float a = basecolor.a*vertex_color.a;
|
|
|
|
frag_color = max(vec4(color.rgb,a), vec4(0));
|
|
}
|
|
|
|
#else
|
|
|
|
uniform sampler2D diffuseMap; //always in sRGB space
|
|
uniform sampler2D emissiveMap;
|
|
|
|
uniform vec3 emissiveColor;
|
|
|
|
out vec4 frag_color;
|
|
|
|
in vec3 vary_position;
|
|
|
|
in vec2 base_color_texcoord;
|
|
in vec2 emissive_texcoord;
|
|
|
|
in vec4 vertex_color;
|
|
|
|
#ifdef HAS_ALPHA_MASK
|
|
uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
|
|
#endif
|
|
|
|
vec3 srgb_to_linear(vec3 c);
|
|
vec3 linear_to_srgb(vec3 c);
|
|
|
|
|
|
void main()
|
|
{
|
|
vec3 color = vec3(0,0,0);
|
|
|
|
vec3 pos = vary_position;
|
|
|
|
vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
|
|
basecolor.rgb = srgb_to_linear(basecolor.rgb);
|
|
#ifdef HAS_ALPHA_MASK
|
|
if (basecolor.a < minimum_alpha)
|
|
{
|
|
discard;
|
|
}
|
|
#endif
|
|
|
|
color = vertex_color.rgb * basecolor.rgb;
|
|
|
|
// emissiveColor is the emissive color factor from GLTF and is already in linear space
|
|
vec3 colorEmissive = emissiveColor;
|
|
// emissiveMap here is a vanilla RGB texture encoded as sRGB, manually convert to linear
|
|
colorEmissive *= srgb_to_linear(texture(emissiveMap, emissive_texcoord.xy).rgb);
|
|
|
|
|
|
float a = basecolor.a*vertex_color.a;
|
|
color += colorEmissive;
|
|
|
|
color = linear_to_srgb(color);
|
|
frag_color = max(vec4(color.rgb,a), vec4(0));
|
|
}
|
|
|
|
#endif
|