#version 450
#extension GL_KHR_vulkan_glsl : enable

//#include "ShaderDescriptorDefinitions.glsl"

layout(location = 0) in vec3 aVertexPos;
layout(location = 1) in vec2 aUV;
layout(location = 2) in vec3 aNormal;
layout(location = 3) in vec3 aTangent;
layout(location = 4) in mat4 worldTransform;

//layout(std140, push_constant) uniform TestPushConstant
//{
//  mat4 pvMat;
//  vec4 lightPosition;
//  vec4 eyePosition;
//  vec4 ambientColor;
//  vec4 lightColor;
//
//} testPushConstant;

layout(location = 0) out struct
{
  //mat3 BTN;
  vec4 vertColor;
  //vec3 localSpacePosition;
  //vec2 uv;
  //vec3 localLightPosition;
  //vec3 localEyePosition;

} Out;

layout(set = 2, binding = 0) uniform CameraData
{
  vec4 position; 
  mat4 vpMat;
} cameraData;

void main()
{
  //const float gamma = testPushConstant.eyePosition.w;
  //mat4 W2L = inverse(worldTransform);

  //// Since attributes are instanced we want the local positions of light and eye (camera)
  //Out.localLightPosition = vec3(W2L * vec4(testPushConstant.lightPosition.xyz, 1.0f));
  //Out.localEyePosition = vec3(W2L * vec4(testPushConstant.eyePosition.xyz, 1.0f));

  //vec3 biTangent = normalize(cross(aNormal, aTangent));

  //gl_Position = testPushConstant.pvMat * worldTransform * vec4(aVertexPos, 1.0);

  //// Since the normal we are sampling is in tangent space, we want to later convert them to local space
  //// so we need this matrix to multiply with the sampled texel of the normal map.
  //Out.BTN = mat3(aTangent, biTangent, aNormal);
  //Out.localSpacePosition = aVertexPos;
  //Out.uv = aUV;

  // render NDC first
  //gl_Position = vec4(aVertexPos, 1.0f);
  gl_Position = cameraData.vpMat * worldTransform * vec4 (aVertexPos, 1.0f);
  Out.vertColor = vec4 (aVertexPos, 1.0f);
}