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CategoryPixels
Header for the enumerated pixel format definitions.
These define alpha as the opacity of a surface.
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#define | SDL_ALPHA_OPAQUE 255 |
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#define | SDL_ALPHA_TRANSPARENT 0 |
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#define | SDL_DEFINE_PIXELFOURCC(A, B, C, D) SDL_FOURCC(A, B, C, D) |
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#define | SDL_DEFINE_PIXELFORMAT(type, order, layout, bits, bytes) |
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#define | SDL_PIXELFLAG(X) (((X) >> 28) & 0x0F) |
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#define | SDL_PIXELTYPE(X) (((X) >> 24) & 0x0F) |
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#define | SDL_PIXELORDER(X) (((X) >> 20) & 0x0F) |
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#define | SDL_PIXELLAYOUT(X) (((X) >> 16) & 0x0F) |
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#define | SDL_BITSPERPIXEL(X) (((X) >> 8) & 0xFF) |
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#define | SDL_BYTESPERPIXEL(X) |
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#define | SDL_ISPIXELFORMAT_INDEXED(format) |
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#define | SDL_ISPIXELFORMAT_PACKED(format) |
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#define | SDL_ISPIXELFORMAT_ARRAY(format) |
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#define | SDL_ISPIXELFORMAT_ALPHA(format) |
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#define | SDL_ISPIXELFORMAT_FOURCC(format) ((format) && (SDL_PIXELFLAG(format) != 1)) |
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#define | SDL_Colour SDL_Color |
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enum | SDL_PixelType {
SDL_PIXELTYPE_UNKNOWN
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SDL_PIXELTYPE_INDEX1
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SDL_PIXELTYPE_INDEX4
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SDL_PIXELTYPE_INDEX8
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SDL_PIXELTYPE_PACKED8
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SDL_PIXELTYPE_PACKED16
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SDL_PIXELTYPE_PACKED32
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SDL_PIXELTYPE_ARRAYU8
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SDL_PIXELTYPE_ARRAYU16
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SDL_PIXELTYPE_ARRAYU32
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SDL_PIXELTYPE_ARRAYF16
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SDL_PIXELTYPE_ARRAYF32
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SDL_PIXELTYPE_INDEX2
} |
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enum | SDL_BitmapOrder {
SDL_BITMAPORDER_NONE
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SDL_BITMAPORDER_4321
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SDL_BITMAPORDER_1234
} |
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enum | SDL_PackedOrder {
SDL_PACKEDORDER_NONE
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SDL_PACKEDORDER_XRGB
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SDL_PACKEDORDER_RGBX
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SDL_PACKEDORDER_ARGB
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SDL_PACKEDORDER_RGBA
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SDL_PACKEDORDER_XBGR
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SDL_PACKEDORDER_BGRX
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SDL_PACKEDORDER_ABGR
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SDL_PACKEDORDER_BGRA
} |
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enum | SDL_ArrayOrder {
SDL_ARRAYORDER_NONE
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SDL_ARRAYORDER_RGB
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SDL_ARRAYORDER_RGBA
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SDL_ARRAYORDER_ARGB
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SDL_ARRAYORDER_BGR
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SDL_ARRAYORDER_BGRA
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SDL_ARRAYORDER_ABGR
} |
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enum | SDL_PackedLayout {
SDL_PACKEDLAYOUT_NONE
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SDL_PACKEDLAYOUT_332
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SDL_PACKEDLAYOUT_4444
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SDL_PACKEDLAYOUT_1555
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SDL_PACKEDLAYOUT_5551
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SDL_PACKEDLAYOUT_565
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SDL_PACKEDLAYOUT_8888
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SDL_PACKEDLAYOUT_2101010
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SDL_PACKEDLAYOUT_1010102
} |
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enum | SDL_PixelFormatEnum {
SDL_PIXELFORMAT_UNKNOWN
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SDL_PIXELFORMAT_INDEX1LSB
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SDL_PIXELFORMAT_INDEX1MSB
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SDL_PIXELFORMAT_INDEX2LSB
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SDL_PIXELFORMAT_INDEX2MSB
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SDL_PIXELFORMAT_INDEX4LSB
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SDL_PIXELFORMAT_INDEX4MSB
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SDL_PIXELFORMAT_INDEX8
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SDL_PIXELFORMAT_RGB332
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SDL_PIXELFORMAT_XRGB4444
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SDL_PIXELFORMAT_RGB444 = SDL_PIXELFORMAT_XRGB4444
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SDL_PIXELFORMAT_XBGR4444
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SDL_PIXELFORMAT_BGR444 = SDL_PIXELFORMAT_XBGR4444
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SDL_PIXELFORMAT_XRGB1555
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SDL_PIXELFORMAT_RGB555 = SDL_PIXELFORMAT_XRGB1555
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SDL_PIXELFORMAT_XBGR1555
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SDL_PIXELFORMAT_BGR555 = SDL_PIXELFORMAT_XBGR1555
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SDL_PIXELFORMAT_ARGB4444
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SDL_PIXELFORMAT_RGBA4444
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SDL_PIXELFORMAT_ABGR4444
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SDL_PIXELFORMAT_BGRA4444
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SDL_PIXELFORMAT_ARGB1555
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SDL_PIXELFORMAT_RGBA5551
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SDL_PIXELFORMAT_ABGR1555
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SDL_PIXELFORMAT_BGRA5551
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SDL_PIXELFORMAT_RGB565
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SDL_PIXELFORMAT_BGR565
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SDL_PIXELFORMAT_RGB24
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SDL_PIXELFORMAT_BGR24
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SDL_PIXELFORMAT_XRGB8888
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SDL_PIXELFORMAT_RGB888 = SDL_PIXELFORMAT_XRGB8888
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SDL_PIXELFORMAT_RGBX8888
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SDL_PIXELFORMAT_XBGR8888
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SDL_PIXELFORMAT_BGR888 = SDL_PIXELFORMAT_XBGR8888
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SDL_PIXELFORMAT_BGRX8888
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SDL_PIXELFORMAT_ARGB8888
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SDL_PIXELFORMAT_RGBA8888
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SDL_PIXELFORMAT_ABGR8888
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SDL_PIXELFORMAT_BGRA8888
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SDL_PIXELFORMAT_ARGB2101010
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SDL_PIXELFORMAT_RGBA32 = SDL_PIXELFORMAT_RGBA8888
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SDL_PIXELFORMAT_ARGB32 = SDL_PIXELFORMAT_ARGB8888
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SDL_PIXELFORMAT_BGRA32 = SDL_PIXELFORMAT_BGRA8888
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SDL_PIXELFORMAT_ABGR32 = SDL_PIXELFORMAT_ABGR8888
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SDL_PIXELFORMAT_RGBX32 = SDL_PIXELFORMAT_RGBX8888
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SDL_PIXELFORMAT_XRGB32 = SDL_PIXELFORMAT_XRGB8888
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SDL_PIXELFORMAT_BGRX32 = SDL_PIXELFORMAT_BGRX8888
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SDL_PIXELFORMAT_XBGR32 = SDL_PIXELFORMAT_XBGR8888
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SDL_PIXELFORMAT_YV12
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SDL_PIXELFORMAT_IYUV
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SDL_PIXELFORMAT_YUY2
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SDL_PIXELFORMAT_UYVY
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SDL_PIXELFORMAT_YVYU
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SDL_PIXELFORMAT_NV12
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SDL_PIXELFORMAT_NV21
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SDL_PIXELFORMAT_EXTERNAL_OES =
} |
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const char * | SDL_GetPixelFormatName (Uint32 format) |
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SDL_bool | SDL_PixelFormatEnumToMasks (Uint32 format, int *bpp, Uint32 *Rmask, Uint32 *Gmask, Uint32 *Bmask, Uint32 *Amask) |
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Uint32 | SDL_MasksToPixelFormatEnum (int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask) |
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SDL_PixelFormat * | SDL_AllocFormat (Uint32 pixel_format) |
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void | SDL_FreeFormat (SDL_PixelFormat *format) |
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SDL_Palette * | SDL_AllocPalette (int ncolors) |
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int | SDL_SetPixelFormatPalette (SDL_PixelFormat *format, SDL_Palette *palette) |
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int | SDL_SetPaletteColors (SDL_Palette *palette, const SDL_Color *colors, int firstcolor, int ncolors) |
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void | SDL_FreePalette (SDL_Palette *palette) |
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Uint32 | SDL_MapRGB (const SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b) |
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Uint32 | SDL_MapRGBA (const SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b, Uint8 a) |
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void | SDL_GetRGB (Uint32 pixel, const SDL_PixelFormat *format, Uint8 *r, Uint8 *g, Uint8 *b) |
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void | SDL_GetRGBA (Uint32 pixel, const SDL_PixelFormat *format, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a) |
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void | SDL_CalculateGammaRamp (float gamma, Uint16 *ramp) |
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Get RGBA values from a pixel in the specified format.
This function uses the entire 8-bit [0..255] range when converting color components from pixel formats with less than 8-bits per RGB component (e.g., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).
If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque).
- Parameters
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pixel | a pixel value. |
format | an SDL_PixelFormat structure describing the format of the pixel. |
r | a pointer filled in with the red component. |
g | a pointer filled in with the green component. |
b | a pointer filled in with the blue component. |
a | a pointer filled in with the alpha component. |
- Since
- This function is available since SDL 2.0.0.
- See also
- SDL_GetRGB
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SDL_MapRGB
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SDL_MapRGBA
Map an RGB triple to an opaque pixel value for a given pixel format.
This function maps the RGB color value to the specified pixel format and returns the pixel value best approximating the given RGB color value for the given pixel format.
If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned.
If the specified pixel format has an alpha component it will be returned as all 1 bits (fully opaque).
If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e.g., with a 16-bpp format the return value can be assigned to a Uint16, and similarly a Uint8 for an 8-bpp format).
- Parameters
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format | an SDL_PixelFormat structure describing the pixel format. |
r | the red component of the pixel in the range 0-255. |
g | the green component of the pixel in the range 0-255. |
b | the blue component of the pixel in the range 0-255. |
- Returns
- a pixel value.
- Since
- This function is available since SDL 2.0.0.
- See also
- SDL_GetRGB
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SDL_GetRGBA
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SDL_MapRGBA
Map an RGBA quadruple to a pixel value for a given pixel format.
This function maps the RGBA color value to the specified pixel format and returns the pixel value best approximating the given RGBA color value for the given pixel format.
If the specified pixel format has no alpha component the alpha value will be ignored (as it will be in formats with a palette).
If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned.
If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e.g., with a 16-bpp format the return value can be assigned to a Uint16, and similarly a Uint8 for an 8-bpp format).
- Parameters
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format | an SDL_PixelFormat structure describing the format of the pixel. |
r | the red component of the pixel in the range 0-255. |
g | the green component of the pixel in the range 0-255. |
b | the blue component of the pixel in the range 0-255. |
a | the alpha component of the pixel in the range 0-255. |
- Returns
- a pixel value.
- Since
- This function is available since SDL 2.0.0.
- See also
- SDL_GetRGB
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SDL_GetRGBA
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SDL_MapRGB