module sdl3::sdl;

typedef BlendMode = uint;

const BlendMode BLENDMODE_NONE @builtin                = 0x00000000;
const BlendMode BLENDMODE_BLEND @builtin               = 0x00000001;
const BlendMode BLENDMODE_BLEND_PREMULTIPLIED @builtin = 0x00000010;
const BlendMode BLENDMODE_ADD @builtin                 = 0x00000002;
const BlendMode BLENDMODE_ADD_PREMULTIPLIED @builtin   = 0x00000020;
const BlendMode BLENDMODE_MOD @builtin                 = 0x00000004;
const BlendMode BLENDMODE_MUL @builtin                 = 0x00000008;
const BlendMode BLENDMODE_INVALID @builtin             = 0x7FFFFFFF;

typedef BlendOperation = CInt;

const BlendOperation BLENDOPERATION_ADD @builtin          = 0x1;
const BlendOperation BLENDOPERATION_SUBTRACT @builtin     = 0x2;
const BlendOperation BLENDOPERATION_REV_SUBTRACT @builtin = 0x3;
const BlendOperation BLENDOPERATION_MINIMUM @builtin      = 0x4;
const BlendOperation BLENDOPERATION_MAXIMUM @builtin      = 0x5;

typedef BlendFactor = CInt;

const BlendFactor BLENDFACTOR_ZERO @builtin                = 0x1;
const BlendFactor BLENDFACTOR_ONE @builtin                 = 0x2;
const BlendFactor BLENDFACTOR_SRC_COLOR @builtin           = 0x3;
const BlendFactor BLENDFACTOR_ONE_MINUS_SRC_COLOR @builtin = 0x4;
const BlendFactor BLENDFACTOR_SRC_ALPHA @builtin           = 0x5;
const BlendFactor BLENDFACTOR_ONE_MINUS_SRC_ALPHA @builtin = 0x6;
const BlendFactor BLENDFACTOR_DST_COLOR @builtin           = 0x7;
const BlendFactor BLENDFACTOR_ONE_MINUS_DST_COLOR @builtin = 0x8;
const BlendFactor BLENDFACTOR_DST_ALPHA @builtin           = 0x9;
const BlendFactor BLENDFACTOR_ONE_MINUS_DST_ALPHA @builtin = 0xA;

extern fn BlendMode compose_custom_blend_mode(BlendFactor srcColorFactor, BlendFactor dstColorFactor, BlendOperation colorOperation, BlendFactor srcAlphaFactor, BlendFactor dstAlphaFactor, BlendOperation alphaOperation) @extern("SDL_ComposeCustomBlendMode");