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T4
Starting
on
T4
| #version 330 core | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // Structs | |
| /////////////////////////////////////////////////////////////////////////////// | |
| struct Material { | |
| vec3 emissive_factor; | |
| #ifdef USE_METALLIC_MATERIAL | |
| vec4 base_color_factor; | |
| float metallic_factor; | |
| float roughness_factor; | |
| #endif | |
| #ifdef USE_GLOSSY_MATERIAL | |
| vec4 diffuse_factor; | |
| vec3 specular_factor; | |
| float glossiness_factor; | |
| #endif | |
| #ifdef HAS_NORMAL_TEX | |
| sampler2D normal_texture; | |
| #endif | |
| #ifdef HAS_OCCLUSION_TEX | |
| sampler2D occlusion_texture; | |
| #endif | |
| #ifdef HAS_EMISSIVE_TEX | |
| sampler2D emissive_texture; | |
| #endif | |
| #ifdef HAS_BASE_COLOR_TEX | |
| sampler2D base_color_texture; | |
| #endif | |
| #ifdef HAS_METALLIC_ROUGHNESS_TEX | |
| sampler2D metallic_roughness_texture; | |
| #endif | |
| #ifdef HAS_DIFFUSE_TEX | |
| sampler2D diffuse_texture; | |
| #endif | |
| #ifdef HAS_SPECULAR_GLOSSINESS_TEX | |
| sampler2D specular_glossiness; | |
| #endif | |
| }; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // Uniforms | |
| /////////////////////////////////////////////////////////////////////////////// | |
| uniform Material material; | |
| uniform vec3 cam_pos; | |
| #ifdef USE_IBL | |
| uniform samplerCube diffuse_env; | |
| uniform samplerCube specular_env; | |
| #endif | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // Inputs | |
| /////////////////////////////////////////////////////////////////////////////// | |
| in vec3 frag_position; | |
| #ifdef NORMAL_LOC | |
| in vec3 frag_normal; | |
| #endif | |
| #ifdef HAS_NORMAL_TEX | |
| #ifdef TANGENT_LOC | |
| #ifdef NORMAL_LOC | |
| in mat3 tbn; | |
| #endif | |
| #endif | |
| #endif | |
| #ifdef TEXCOORD_0_LOC | |
| in vec2 uv_0; | |
| #endif | |
| #ifdef TEXCOORD_1_LOC | |
| in vec2 uv_1; | |
| #endif | |
| #ifdef COLOR_0_LOC | |
| in vec4 color_multiplier; | |
| #endif | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // OUTPUTS | |
| /////////////////////////////////////////////////////////////////////////////// | |
| out vec4 frag_color; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // Constants | |
| /////////////////////////////////////////////////////////////////////////////// | |
| const float PI = 3.141592653589793; | |
| const float min_roughness = 0.04; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // Utility Functions | |
| /////////////////////////////////////////////////////////////////////////////// | |
| vec4 srgb_to_linear(vec4 srgb) | |
| { | |
| #ifndef SRGB_CORRECTED | |
| // Fast Approximation | |
| //vec3 linOut = pow(srgbIn.xyz,vec3(2.2)); | |
| // | |
| vec3 b_less = step(vec3(0.04045),srgb.xyz); | |
| vec3 lin_out = mix( srgb.xyz/vec3(12.92), pow((srgb.xyz+vec3(0.055))/vec3(1.055),vec3(2.4)), b_less ); | |
| return vec4(lin_out, srgb.w); | |
| #else | |
| return srgb; | |
| #endif | |
| } | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // MAIN | |
| /////////////////////////////////////////////////////////////////////////////// | |
| void main() | |
| { | |
| // Compute albedo | |
| vec4 base_color = material.base_color_factor; | |
| #ifdef HAS_BASE_COLOR_TEX | |
| base_color = base_color * texture(material.base_color_texture, uv_0); | |
| #endif | |
| #ifdef COLOR_0_LOC | |
| base_color *= color_multiplier; | |
| #endif | |
| frag_color = clamp(base_color, 0.0, 1.0); | |
| } | |