#ifdef GL_ES
precision mediump int;
precision highp float;
#endif

#define USE_OGRE_FROM_FUTURE
#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(
uniform mat4 worldViewProj;
uniform mat4 worldMat;
uniform vec4 texelOffsets;
uniform mat4 texMat;
)

MAIN_PARAMETERS
IN(vec4 vertex, POSITION)
IN(vec2 uv0, TEXCOORD0)
OUT(vec4 oUv0, TEXCOORD0)
OUT(vec4 oWp, TEXCOORD1)
MAIN_DECLARATION
{
  vec4 oPos = mul(worldViewProj, vertex);  
  oWp = mul(worldMat, vertex);   
  
  // fix pixel / texel alignment 
  oPos.xy += texelOffsets.zw * vec2_splat(oPos.w);
  oUv0.xy = mul(texMat, vec4(uv0.x, uv0.y, 0.0, 1.0)).xy;
  oUv0.zw = oPos.zw;
  gl_Position = oPos;
}