$#include "GraphicsDefs.h"

/// Rendering modes.
enum RenderMode
{
    RENDER_FORWARD = 0,
    RENDER_PREPASS,
    RENDER_DEFERRED
};

/// Primitive type.
enum PrimitiveType
{
    TRIANGLE_LIST = 0,
    LINE_LIST
};

/// %Geometry type.
enum GeometryType
{
    GEOM_STATIC = 0,
    GEOM_SKINNED = 1,
    GEOM_INSTANCED = 2,
    GEOM_BILLBOARD = 3,
    GEOM_STATIC_NOINSTANCING = 4,
    MAX_GEOMETRYTYPES = 4,
};

/// Blending mode.
enum BlendMode
{
    BLEND_REPLACE = 0,
    BLEND_ADD,
    BLEND_MULTIPLY,
    BLEND_ALPHA,
    BLEND_ADDALPHA,
    BLEND_PREMULALPHA,
    BLEND_INVDESTALPHA,
    MAX_BLENDMODES
};

/// Depth or stencil compare mode.
enum CompareMode
{
    CMP_ALWAYS = 0,
    CMP_EQUAL,
    CMP_NOTEQUAL,
    CMP_LESS,
    CMP_LESSEQUAL,
    CMP_GREATER,
    CMP_GREATEREQUAL,
    MAX_COMPAREMODES
};

/// Culling mode.
enum CullMode
{
    CULL_NONE = 0,
    CULL_CCW,
    CULL_CW,
    MAX_CULLMODES
};

/// Fill mode.
enum FillMode
{
    FILL_SOLID = 0,
    FILL_WIREFRAME,
    FILL_POINT
};

/// Stencil operation.
enum StencilOp
{
    OP_KEEP = 0,
    OP_ZERO,
    OP_REF,
    OP_INCR,
    OP_DECR
};

/// Vertex/index buffer lock state.
enum LockState
{
    LOCK_NONE = 0,
    LOCK_HARDWARE,
    LOCK_SHADOW,
    LOCK_SCRATCH
};

/// Vertex elements.
enum VertexElement
{
    ELEMENT_POSITION = 0,
    ELEMENT_NORMAL,
    ELEMENT_COLOR,
    ELEMENT_TEXCOORD1,
    ELEMENT_TEXCOORD2,
    ELEMENT_CUBETEXCOORD1,
    ELEMENT_CUBETEXCOORD2,
    ELEMENT_TANGENT,
    ELEMENT_BLENDWEIGHTS,
    ELEMENT_BLENDINDICES,
    ELEMENT_INSTANCEMATRIX1,
    ELEMENT_INSTANCEMATRIX2,
    ELEMENT_INSTANCEMATRIX3,
    MAX_VERTEX_ELEMENTS
};

/// Texture filtering mode.
enum TextureFilterMode
{
    FILTER_NEAREST = 0,
    FILTER_BILINEAR,
    FILTER_TRILINEAR,
    FILTER_ANISOTROPIC,
    FILTER_DEFAULT,
    MAX_FILTERMODES
};

/// Texture addressing mode.
enum TextureAddressMode
{
    ADDRESS_WRAP = 0,
    ADDRESS_MIRROR,
    ADDRESS_CLAMP,
    ADDRESS_BORDER,
    MAX_ADDRESSMODES
};

/// Texture coordinates.
enum TextureCoordinate
{
    COORD_U = 0,
    COORD_V,
    COORD_W,
    MAX_COORDS
};

/// Texture usage types.
enum TextureUsage
{
    TEXTURE_STATIC = 0,
    TEXTURE_DYNAMIC,
    TEXTURE_RENDERTARGET,
    TEXTURE_DEPTHSTENCIL
};

/// Cube map faces.
enum CubeMapFace
{
    FACE_POSITIVE_X = 0,
    FACE_NEGATIVE_X,
    FACE_POSITIVE_Y,
    FACE_NEGATIVE_Y,
    FACE_POSITIVE_Z,
    FACE_NEGATIVE_Z,
    MAX_CUBEMAP_FACES
};

/// Update mode for render surface viewports.
enum RenderSurfaceUpdateMode
{
    SURFACE_MANUALUPDATE = 0,
    SURFACE_UPDATEVISIBLE,
    SURFACE_UPDATEALWAYS
};

/// Shader types.
enum ShaderType
{
    VS = 0,
    PS,
};

/// Texture units.
enum TextureUnit
{
    TU_DIFFUSE = 0,
    TU_ALBEDOBUFFER = 0,
    TU_NORMAL = 1,
    TU_NORMALBUFFER = 1,
    TU_SPECULAR = 2,
    TU_EMISSIVE = 3,
    TU_ENVIRONMENT = 4,
    MAX_MATERIAL_TEXTURE_UNITS = 5,
    TU_LIGHTRAMP = 5,
    TU_LIGHTSHAPE = 6,
    TU_SHADOWMAP = 7,
    TU_FACESELECT = 8,
    TU_INDIRECTION = 9,
    TU_DEPTHBUFFER = 10,
    TU_LIGHTBUFFER = 11,
    MAX_TEXTURE_UNITS = 12
};

/// Shader parameter groups for determining need to update.
enum ShaderParameterGroup
{
    SP_FRAME = 0,
    SP_CAMERA,
    SP_VIEWPORT,
    SP_ZONE,
    SP_LIGHT,
    SP_VERTEXLIGHTS,
    SP_MATERIAL,
    SP_OBJECTTRANSFORM,
    SP_OBJECTDATA,
    MAX_SHADER_PARAMETER_GROUPS
};

static const int QUALITY_LOW;
static const int QUALITY_MEDIUM;
static const int QUALITY_HIGH;
static const int QUALITY_MAX;

static const int SHADOWQUALITY_LOW_16BIT;
static const int SHADOWQUALITY_LOW_24BIT;
static const int SHADOWQUALITY_HIGH_16BIT;
static const int SHADOWQUALITY_HIGH_24BIT;

static const unsigned CLEAR_COLOR;
static const unsigned CLEAR_DEPTH;
static const unsigned CLEAR_STENCIL;