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uniform int object_id = 0;
uniform vec3 materialDiffuseColor;
uniform float materialMetallic;
uniform float materialRoughness;
#ifdef V3D_SHADING_TEXTURE_COLOR
uniform sampler2D image;
uniform float ImageTransparencyCutoff = 0.1;
#endif
#ifdef NORMAL_VIEWPORT_PASS_ENABLED
in vec3 normal_viewport;
#endif /* NORMAL_VIEWPORT_PASS_ENABLED */
#ifdef V3D_SHADING_TEXTURE_COLOR
in vec2 uv_interp;
#endif /* V3D_SHADING_TEXTURE_COLOR */
#ifdef HAIR_SHADER
flat in float hair_rand;
#endif
layout(location=0) out uint objectId;
layout(location=1) out vec4 materialData;
#ifdef NORMAL_VIEWPORT_PASS_ENABLED
# ifdef WORKBENCH_ENCODE_NORMALS
layout(location=3) out vec2 normalViewport;
# else /* WORKBENCH_ENCODE_NORMALS */
layout(location=3) out vec3 normalViewport;
# endif /* WORKBENCH_ENCODE_NORMALS */
#endif /* NORMAL_VIEWPORT_PASS_ENABLED */
void main()
{
objectId = uint(object_id);
vec4 color_roughness;
#ifdef V3D_SHADING_TEXTURE_COLOR
color_roughness = texture(image, uv_interp);
if (color_roughness.a < ImageTransparencyCutoff) {
discard;
}
color_roughness.a = materialRoughness;
#else
color_roughness = vec4(materialDiffuseColor, materialRoughness);
#endif /* V3D_SHADING_TEXTURE_COLOR */
#ifdef HAIR_SHADER
float hair_color_variation = hair_rand * 0.1;
color_roughness = clamp(color_roughness - hair_color_variation, 0.0, 1.0);
#endif
float metallic;
#ifdef V3D_SHADING_SPECULAR_HIGHLIGHT
# ifdef HAIR_SHADER
metallic = clamp(materialMetallic - hair_color_variation, 0.0, 1.0);
# else
metallic = materialMetallic;
# endif
#elif defined(V3D_LIGHTING_MATCAP)
/* Encode front facing in metallic channel. */
metallic = float(gl_FrontFacing);
color_roughness.a = 0.0;
#endif
materialData.rgb = color_roughness.rgb;
materialData.a = workbench_float_pair_encode(color_roughness.a, metallic);
#ifdef NORMAL_VIEWPORT_PASS_ENABLED
vec3 n = (gl_FrontFacing) ? normal_viewport : -normal_viewport;
n = normalize(n);
normalViewport = workbench_normal_encode(n);
#endif
}
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