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這么酷這么帥的哥哥我，指引你，如何讓COLOR類也能寫逆天了（一）

你看得懂C++不？那你可以靠邊站了。聽得懂人話不？那你也可以靠邊站了。

此吐槽文，專門為沒事干就想著怎么挑戰編譯器的牲口準備的。

在此之前，你必須要準備好聽得懂人話的勇氣和聽不懂人話的基礎。

1. 這個類要干些啥

在干一件事情之前，如果你早就預謀好了，那就是禽獸；如果你預謀都沒有的，那就是禽獸不如。

所以在逆天之前，咱們得知道逆天之后，是如何作威作福的，這樣才有Revolutionary的動力。

哥哥估計你應該是沒寫過軟件渲染器。你們這群屁大孩子哪知道哥哥的苦啊。

老子他媽的為了兼容D3D的顏色，半夜爬起來黑燈瞎火的查手冊，一看，我操，這么多顏色！

這世界咋不全他媽都是些顏色瞎子呢！

typedef enum DXGI_FORMAT
{
    DXGI_FORMAT_UNKNOWN = 0,
    DXGI_FORMAT_R32G32B32A32_TYPELESS = 1,
    DXGI_FORMAT_R32G32B32A32_FLOAT = 2,
    DXGI_FORMAT_R32G32B32A32_UINT = 3,
    DXGI_FORMAT_R32G32B32A32_SINT = 4,
    DXGI_FORMAT_R32G32B32_TYPELESS = 5,
    DXGI_FORMAT_R32G32B32_FLOAT = 6,
    DXGI_FORMAT_R32G32B32_UINT = 7,
    DXGI_FORMAT_R32G32B32_SINT = 8,
    DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,
    DXGI_FORMAT_R16G16B16A16_FLOAT = 10,
    DXGI_FORMAT_R16G16B16A16_UNORM = 11,
    DXGI_FORMAT_R16G16B16A16_UINT = 12,
    DXGI_FORMAT_R16G16B16A16_SNORM = 13,
    DXGI_FORMAT_R16G16B16A16_SINT = 14,
    DXGI_FORMAT_R32G32_TYPELESS = 15,
    DXGI_FORMAT_R32G32_FLOAT = 16,
    DXGI_FORMAT_R32G32_UINT = 17,
    DXGI_FORMAT_R32G32_SINT = 18,
    DXGI_FORMAT_R32G8X24_TYPELESS = 19,
    DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20,
    DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21,
    DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22,
    DXGI_FORMAT_R10G10B10A2_TYPELESS = 23,
    DXGI_FORMAT_R10G10B10A2_UNORM = 24,
    DXGI_FORMAT_R10G10B10A2_UINT = 25,
    DXGI_FORMAT_R11G11B10_FLOAT = 26,
    DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,
    DXGI_FORMAT_R8G8B8A8_UNORM = 28,
    DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29,
    DXGI_FORMAT_R8G8B8A8_UINT = 30,
    DXGI_FORMAT_R8G8B8A8_SNORM = 31,
    DXGI_FORMAT_R8G8B8A8_SINT = 32,
    DXGI_FORMAT_R16G16_TYPELESS = 33,
    DXGI_FORMAT_R16G16_FLOAT = 34,
    DXGI_FORMAT_R16G16_UNORM = 35,
    DXGI_FORMAT_R16G16_UINT = 36,
    DXGI_FORMAT_R16G16_SNORM = 37,
    DXGI_FORMAT_R16G16_SINT = 38,
    DXGI_FORMAT_R32_TYPELESS = 39,
    DXGI_FORMAT_D32_FLOAT = 40,
    DXGI_FORMAT_R32_FLOAT = 41,
    DXGI_FORMAT_R32_UINT = 42,
    DXGI_FORMAT_R32_SINT = 43,
    DXGI_FORMAT_R24G8_TYPELESS = 44,
    DXGI_FORMAT_D24_UNORM_S8_UINT = 45,
    DXGI_FORMAT_R24_UNORM_X8_TYPELESS = 46,
    DXGI_FORMAT_X24_TYPELESS_G8_UINT = 47,
    DXGI_FORMAT_R8G8_TYPELESS = 48,
    DXGI_FORMAT_R8G8_UNORM = 49,
    DXGI_FORMAT_R8G8_UINT = 50,
    DXGI_FORMAT_R8G8_SNORM = 51,
    DXGI_FORMAT_R8G8_SINT = 52,
    DXGI_FORMAT_R16_TYPELESS = 53,
    DXGI_FORMAT_R16_FLOAT = 54,
    DXGI_FORMAT_D16_UNORM = 55,
    DXGI_FORMAT_R16_UNORM = 56,
    DXGI_FORMAT_R16_UINT = 57,
    DXGI_FORMAT_R16_SNORM = 58,
    DXGI_FORMAT_R16_SINT = 59,
    DXGI_FORMAT_R8_TYPELESS = 60,
    DXGI_FORMAT_R8_UNORM = 61,
    DXGI_FORMAT_R8_UINT = 62,
    DXGI_FORMAT_R8_SNORM = 63,
    DXGI_FORMAT_R8_SINT = 64,
    DXGI_FORMAT_A8_UNORM = 65,
    DXGI_FORMAT_R1_UNORM = 66,
    DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67,
    DXGI_FORMAT_R8G8_B8G8_UNORM = 68,
    DXGI_FORMAT_G8R8_G8B8_UNORM = 69,
    DXGI_FORMAT_BC1_TYPELESS = 70,
    DXGI_FORMAT_BC1_UNORM = 71,
    DXGI_FORMAT_BC1_UNORM_SRGB = 72,
    DXGI_FORMAT_BC2_TYPELESS = 73,
    DXGI_FORMAT_BC2_UNORM = 74,
    DXGI_FORMAT_BC2_UNORM_SRGB = 75,
    DXGI_FORMAT_BC3_TYPELESS = 76,
    DXGI_FORMAT_BC3_UNORM = 77,
    DXGI_FORMAT_BC3_UNORM_SRGB = 78,
    DXGI_FORMAT_BC4_TYPELESS = 79,
    DXGI_FORMAT_BC4_UNORM = 80,
    DXGI_FORMAT_BC4_SNORM = 81,
    DXGI_FORMAT_BC5_TYPELESS = 82,
    DXGI_FORMAT_BC5_UNORM = 83,
    DXGI_FORMAT_BC5_SNORM = 84,
    DXGI_FORMAT_B5G6R5_UNORM = 85,
    DXGI_FORMAT_B5G5R5A1_UNORM = 86,
    DXGI_FORMAT_B8G8R8A8_UNORM = 87,
    DXGI_FORMAT_B8G8R8X8_UNORM = 88,
    DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89,
    DXGI_FORMAT_B8G8R8A8_TYPELESS = 90,
    DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91,
    DXGI_FORMAT_B8G8R8X8_TYPELESS = 92,
    DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,
    DXGI_FORMAT_BC6H_TYPELESS = 94,
    DXGI_FORMAT_BC6H_UF16 = 95,
    DXGI_FORMAT_BC6H_SF16 = 96,
    DXGI_FORMAT_BC7_TYPELESS = 97,
    DXGI_FORMAT_BC7_UNORM = 98,
    DXGI_FORMAT_BC7_UNORM_SRGB = 99,
    DXGI_FORMAT_FORCE_UINT = 0xffffffffUL,
} DXGI_FORMAT, *LPDXGI_FORMAT;

除了BC?一組JB貨，其他的我都要兩兩之間能夠轉化，擦，你丫他媽的還能夠淡定？

然后我就在想啊，這他媽的都差不多，也就是轉轉類型啥的。

那能不能讓編譯器這個狗日的來替我當苦力，生成老子要的貨呢？

然后老子就開始逆天了！老子要作威作福！

2. 怎么干

你問我，那我該問誰？記住了，某老說得對，你啥都不曉得做之前，就先把能做的事情做好。

第一件事情，先把禍害除掉。禍害？什么禍害？滾！別說老子認識你！

先把BC干掉。BC是啥？不知道？腦子都是bullshit呢你。

Block-Compression。壓縮的格式，在咱的CPU系統里面，沒啥JB用。以后頂多寫個掏DIAO的工具，就能解決所有的需求了。

    DXGI_FORMAT_R32G32B32A32_TYPELESS = 1,
    DXGI_FORMAT_R32G32B32A32_FLOAT = 2,
    DXGI_FORMAT_R32G32B32A32_UINT = 3,
    DXGI_FORMAT_R32G32B32A32_SINT = 4,
    DXGI_FORMAT_R32G32B32_TYPELESS = 5,
    DXGI_FORMAT_R32G32B32_FLOAT = 6,
    DXGI_FORMAT_R32G32B32_UINT = 7,
    DXGI_FORMAT_R32G32B32_SINT = 8,
    DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,
    DXGI_FORMAT_R16G16B16A16_FLOAT = 10,
    DXGI_FORMAT_R16G16B16A16_UNORM = 11,
    DXGI_FORMAT_R16G16B16A16_UINT = 12,
    DXGI_FORMAT_R16G16B16A16_SNORM = 13,
    DXGI_FORMAT_R16G16B16A16_SINT = 14,
    DXGI_FORMAT_R32G32_TYPELESS = 15,
    DXGI_FORMAT_R32G32_FLOAT = 16,
    DXGI_FORMAT_R32G32_UINT = 17,
    DXGI_FORMAT_R32G32_SINT = 18,
    DXGI_FORMAT_R32G8X24_TYPELESS = 19,
    DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20,
    DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21,
    DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22,
    DXGI_FORMAT_R10G10B10A2_TYPELESS = 23,
    DXGI_FORMAT_R10G10B10A2_UNORM = 24,
    DXGI_FORMAT_R10G10B10A2_UINT = 25,
    DXGI_FORMAT_R11G11B10_FLOAT = 26,
    DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,
    DXGI_FORMAT_R8G8B8A8_UNORM = 28,
    DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29,
    DXGI_FORMAT_R8G8B8A8_UINT = 30,
    DXGI_FORMAT_R8G8B8A8_SNORM = 31,
    DXGI_FORMAT_R8G8B8A8_SINT = 32,
    DXGI_FORMAT_R16G16_TYPELESS = 33,
    DXGI_FORMAT_R16G16_FLOAT = 34,
    DXGI_FORMAT_R16G16_UNORM = 35,
    DXGI_FORMAT_R16G16_UINT = 36,
    DXGI_FORMAT_R16G16_SNORM = 37,
    DXGI_FORMAT_R16G16_SINT = 38,
    DXGI_FORMAT_R32_TYPELESS = 39,
    DXGI_FORMAT_D32_FLOAT = 40,
    DXGI_FORMAT_R32_FLOAT = 41,
    DXGI_FORMAT_R32_UINT = 42,
    DXGI_FORMAT_R32_SINT = 43,
    DXGI_FORMAT_R24G8_TYPELESS = 44,
    DXGI_FORMAT_D24_UNORM_S8_UINT = 45,
    DXGI_FORMAT_R24_UNORM_X8_TYPELESS = 46,
    DXGI_FORMAT_X24_TYPELESS_G8_UINT = 47,
    DXGI_FORMAT_R8G8_TYPELESS = 48,
    DXGI_FORMAT_R8G8_UNORM = 49,
    DXGI_FORMAT_R8G8_UINT = 50,
    DXGI_FORMAT_R8G8_SNORM = 51,
    DXGI_FORMAT_R8G8_SINT = 52,
    DXGI_FORMAT_R16_TYPELESS = 53,
    DXGI_FORMAT_R16_FLOAT = 54,
    DXGI_FORMAT_D16_UNORM = 55,
    DXGI_FORMAT_R16_UNORM = 56,
    DXGI_FORMAT_R16_UINT = 57,
    DXGI_FORMAT_R16_SNORM = 58,
    DXGI_FORMAT_R16_SINT = 59,
    DXGI_FORMAT_R8_TYPELESS = 60,
    DXGI_FORMAT_R8_UNORM = 61,
    DXGI_FORMAT_R8_UINT = 62,
    DXGI_FORMAT_R8_SNORM = 63,
    DXGI_FORMAT_R8_SINT = 64,
    DXGI_FORMAT_A8_UNORM = 65,
    DXGI_FORMAT_R1_UNORM = 66,
    DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67,
    DXGI_FORMAT_R8G8_B8G8_UNORM = 68,
    DXGI_FORMAT_G8R8_G8B8_UNORM = 69,
    DXGI_FORMAT_B5G6R5_UNORM = 85,
    DXGI_FORMAT_B5G5R5A1_UNORM = 86,
    DXGI_FORMAT_B8G8R8A8_UNORM = 87,
    DXGI_FORMAT_B8G8R8X8_UNORM = 88,
    DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89,
    DXGI_FORMAT_B8G8R8A8_TYPELESS = 90,
    DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91,
    DXGI_FORMAT_B8G8R8X8_TYPELESS = 92,
    DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,

看懂沒？有啥特點你這個豬腦子分析出來沒？

總共只有以下的色彩通道：RGBADSX。

也只有一下的數據類型：UINT SINT FLOAT TYPELESS UNORM SNORM

當然還有幾個比較操蛋的格式

DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67, 
DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89, 
DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91, 
DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,

下面要干的活，就是讓編譯器能夠為不同的顏色轉換，給爺苦力出好使的代碼來。

posted on 2010-03-26 19:04 空明流轉閱讀(2834) 評論(11) 編輯收藏引用

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