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Add sam's formula for pbr

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Benau 2018-01-05 16:45:33 +08:00
parent 294f0d79d1
commit e1c7efd68c
1 changed files with 6 additions and 3 deletions
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9
data/shaders/combine_diffuse_color.frag
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@ -14,15 +14,18 @@ void main()
vec2 tc = gl_FragCoord.xy / u_screen; vec2 tc = gl_FragCoord.xy / u_screen;
vec4 diffuseMatColor = texture(diffuse_color, tc); vec4 diffuseMatColor = texture(diffuse_color, tc);
// Gloss map here is stored in red and green for spec and emit map // Gloss map here is stored in red and green for metallic and emit map
// Real gloss channel is stored in normal and depth framebuffer .z // Real gloss channel is stored in normal and depth framebuffer .z
float specMapValue = texture(gloss_map, tc).x; float metallicMapValue = texture(gloss_map, tc).x;
float emitMapValue = texture(gloss_map, tc).y; float emitMapValue = texture(gloss_map, tc).y;
float ao = texture(ssao_tex, tc).x; float ao = texture(ssao_tex, tc).x;
vec3 DiffuseComponent = texture(diffuse_map, tc).xyz; vec3 DiffuseComponent = texture(diffuse_map, tc).xyz;
vec3 SpecularComponent = texture(specular_map, tc).xyz; vec3 SpecularComponent = texture(specular_map, tc).xyz;
vec3 tmp = diffuseMatColor.xyz * DiffuseComponent * (1. - specMapValue) + SpecularComponent * specMapValue;
vec3 metallicMatColor = mix(vec3(0.04), diffuseMatColor.xyz * 4, metallicMapValue);
vec3 tmp = DiffuseComponent * mix(diffuseMatColor.xyz, vec3(0.0), metallicMapValue) + (metallicMatColor * SpecularComponent);
vec3 emitCol = diffuseMatColor.xyz * diffuseMatColor.xyz * diffuseMatColor.xyz * 15.; vec3 emitCol = diffuseMatColor.xyz * diffuseMatColor.xyz * diffuseMatColor.xyz * 15.;
vec4 color_1 = vec4(tmp * ao + (emitMapValue * emitCol), diffuseMatColor.a); vec4 color_1 = vec4(tmp * ao + (emitMapValue * emitCol), diffuseMatColor.a);