////////////////////////////////////////////////////////////
//~ Constant types

G_DeclConstant(G_StructuredBufferRef, V_ShaderConst_Params, 0);

Enum(V_SelectionMode)
{
  V_SelectionMode_None,
  V_SelectionMode_Tile,
};

Struct(V_DParams)
{
  Vec2I32 target_size;
  G_Texture2DRef target_ro;
  G_RWTexture2DRef target_rw;

  Xform world_to_draw_xf;
  Xform draw_to_world_xf;

  V_SelectionMode selection_mode;
  S_TileKind equipped_tile;

  b32 has_mouse_focus;
  b32 has_keyboard_focus;
  Vec2 ui_cursor;
  Vec2 draw_cursor;
  Vec2 world_cursor;
  Rng2 ui_selection;
  Rng2 draw_selection;
  Rng2 world_selection;

  Vec2 camera_pos;
  f32 camera_zoom;

  f32 world_size;
  G_Texture2DRef tiles;
  G_StructuredBufferRef quads;
  G_StructuredBufferRef shape_verts;
};

////////////////////////////////////////////////////////////
//~ Backdrop shader types

#define V_BackdropCSThreadSizeFromTexSize(tex_size) VEC3I32((tex_size.x + 7) / 8, (tex_size.y + 7) / 8, 1)

////////////////////////////////////////////////////////////
//~ Quad shader types

Enum(V_DQuadFlag)
{
  V_DQuadFlag_None            = 0,
  V_DQuadFlag_DrawGrid        = (1 << 0),
};

Struct(V_DQuad)
{
  V_DQuadFlag flags;
};

////////////////////////////////////////////////////////////
//~ Shape shader types

Struct(V_DVert)
{
  Vec2 pos;
  Vec4 color_lin;
};