//--- G-Buffer ------------------------------------------------------------------------------------
#version 450

layout (location = 0) in vec3 fFragPos;
layout (location = 1) in vec2 fTexCoord;
layout (location = 2) in mat3 fTBN;

layout (location = 0) out vec4 outAlbedo;
layout (location = 1) out vec4 outNormal;
layout (location = 2) out vec4 outPosition;

layout(set = 1, binding = 0) uniform sampler2D textures[5];

void main()
{
    outAlbedo   = vec4(texture(textures[0], fTexCoord).rgb, 1.0);
    outNormal   = vec4(normalize(fTBN * (texture(textures[1], fTexCoord).rgb * 2.0 - 1.0)), 1.0);
    outPosition = vec4(fFragPos, 1.0);
}
//--------------------------------------------------------------------------------------------------
//-------  Lighting --------------------------------------------------------------------------------
#version 450

layout (location = 0) in vec2 fTexCoord;
layout (set = 1, binding = 0) uniform sampler2D gBuffer[3];

layout (location = 0) out vec4 outFragColor;

layout (push_constant) uniform constants
{
    int mode;
} Constants;

void main()
{
    int index = max(0, min(Constants.mode - 1, 2));

    outFragColor = vec4(texture(gBuffer[index], fTexCoord).rgb, 1.0);
}