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varying vec3 varposition;
varying vec3 varnormal;
/* Color, keep in sync with: gpu_shader_vertex.glsl */
float srgb_to_linearrgb(float c)
{
if (c < 0.04045)
return (c < 0.0) ? 0.0 : c * (1.0 / 12.92);
else
return pow((c + 0.055) * (1.0 / 1.055), 2.4);
}
void srgb_to_linearrgb(vec3 col_from, out vec3 col_to)
{
col_to.r = srgb_to_linearrgb(col_from.r);
col_to.g = srgb_to_linearrgb(col_from.g);
col_to.b = srgb_to_linearrgb(col_from.b);
}
void srgb_to_linearrgb(vec4 col_from, out vec4 col_to)
{
col_to.r = srgb_to_linearrgb(col_from.r);
col_to.g = srgb_to_linearrgb(col_from.g);
col_to.b = srgb_to_linearrgb(col_from.b);
col_to.a = col_from.a;
}
bool is_srgb(int info)
{
#ifdef USE_NEW_SHADING
return (info == 1)? true: false;
#else
return false;
#endif
}
void set_var_from_attr(float attr, int info, out float var)
{
var = attr;
}
void set_var_from_attr(vec2 attr, int info, out vec2 var)
{
var = attr;
}
void set_var_from_attr(vec3 attr, int info, out vec3 var)
{
if (is_srgb(info)) {
srgb_to_linearrgb(attr, var);
}
else {
var = attr;
}
}
void set_var_from_attr(vec4 attr, int info, out vec4 var)
{
if (is_srgb(info)) {
srgb_to_linearrgb(attr, var);
}
else {
var = attr;
}
}
/* end color code */
void main()
{
/* position does not need to be transformed, we already have it */
gl_Position = gl_Vertex;
varposition = gl_Vertex.xyz;
varnormal = normalize(-varposition);
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