prosperon/source/shaders/sprite.sglsl

@vs vs
in vec2 vertex;

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

uniform app {
  float time;
  vec2 window;
};

uniform vp {
  mat4 proj;
};

uniform sprite {
  vec4 vcolor;
  vec4 vemissive;
  vec2 spritesize;
  vec2 spriteoff;
  mat4 model;
};

void main()
{
  texcoords = vertex;
  texcoords.y = 1 - texcoords.y;
  gl_Position = proj * model * vec4(vertex, 0, 1.0);
  fcolor = vcolor;
  femissive = vemissive;
}
@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);
  color *= fcolor;
  color.xyz = mix(color.xyz, femissive.xyz, femissive.a);
}
@end

@program sprite vs fs