prosperon/source/shaders/sprite.sglsl

@vs vs
in vec2 vertex;
in vec2 uv;
in vec4 vc;
in vec4 emissive;

out vec2 texcoords;
out vec4 fcolor;
out vec4 femissive;

uniform vs_p { mat4 proj; };

void main()
{
  fcolor = vc;
  femissive = emissive;
  texcoords = uv;
  gl_Position = proj * vec4(vertex, 0.0, 1.0);
}
@end

@fs fs
in vec2 texcoords;
in vec4 fcolor;
in vec4 femissive;
out vec4 color;

uniform texture2D image;
uniform sampler smp;

void main()
{
  color = texture(sampler2D(image,smp), texcoords);
  
  if (color.a <= 0.1f)
      discard;
  
  color *= fcolor;
  color.xyz = mix(color.xyz, femissive.xyz, femissive.a);
}
@end

@program sprite vs fs