uniform mat4 mvp;
uniform sampler2D tex;
uniform vec3 ambient;

vec3 srgb_to_linear(vec3 color)
{
	bvec3 near_zero = lessThan(color, vec3(0.04045));
	vec3 gamma = pow((color+0.055)/1.055, vec3(2.4));
	return mix(color/12.92, gamma, near_zero);
}
vec4 srgb_to_linear(vec4 color)
{
	return vec4(srgb_to_linear(color.rgb), color.a);
}

#pragma MSP stage(vertex)
layout(location=0) in vec4 position;
layout(location=1) in vec2 texcoord;
void main()
{
	passthrough;
	gl_Position = mvp*position;
}

#pragma MSP stage(fragment)
layout(location=0) out vec4 frag_color;
void main()
{
	frag_color = srgb_to_linear(texture(tex, texcoord));
}

/* Expected output: vertex
layout(location=0) uniform mat4 mvp;
layout(location=0) in vec4 position;
layout(location=1) in vec2 texcoord;
layout(location=0) out vec2 _vs_out_texcoord;
void main()
{
  _vs_out_texcoord = texcoord;
  gl_Position = mvp*position;
}
*/

/* Expected output: fragment
layout(location=4) uniform sampler2D tex;
layout(location=0) out vec4 frag_color;
layout(location=0) in vec2 _vs_out_texcoord;
void main()
{
	vec4 color = texture(tex, _vs_out_texcoord);
	vec3 color_1 = color.rgb;
	frag_color = vec4(mix(color_1/12.92, pow((color_1+0.055)/1.055, vec3(2.4)), lessThan(color_1, vec3(0.04045))), color.a);
}
*/