diff options
Diffstat (limited to 'src/mesa/pipe/p_format.h')
| -rw-r--r-- | src/mesa/pipe/p_format.h | 63 |
1 files changed, 27 insertions, 36 deletions
diff --git a/src/mesa/pipe/p_format.h b/src/mesa/pipe/p_format.h index 89d83a44f55..d478a6c58df 100644 --- a/src/mesa/pipe/p_format.h +++ b/src/mesa/pipe/p_format.h @@ -42,11 +42,10 @@ #define PIPE_FORMAT_LAYOUT_RGBAZS 0 #define PIPE_FORMAT_LAYOUT_YCBCR 1 -struct pipe_format_header +static INLINE uint pf_layout(uint f) /**< PIPE_FORMAT_LAYOUT_ */ { - uint layout : 2; /**< PIPE_FORMAT_LAYOUT_ */ - uint padding : 30; -}; + return f & 0x3; +} /** * RGBAZS Format Layout. @@ -75,16 +74,14 @@ struct pipe_format_header #define PIPE_FORMAT_TYPE_SSCALED 5 /** - * In a nutshell, this bitfield contains instructions how to unpack - * a given format to a full-blown 4-component vector suitable for FS. * Because the destination vector is assumed to be RGBA FLOAT, we * need to know how to swizzle and expand components from the source * vector. - * Let's take U_A1_R5_G5_B5 as an example. SwizzleX is A, sizeX + * Let's take U_A1_R5_G5_B5 as an example. X swizzle is A, X size * is 1 bit and type is UNORM. So we take the most significant bit * from source vector, convert 0 to 0.0 and 1 to 1.0 and save it * in the last component of the destination RGBA component. - * Next, swizzleY is R, sizeY is 5 and type is UNORM. We normalize + * Next, Y swizzle is R, Y size is 5 and type is UNORM. We normalize * those 5 bits into [0.0; 1.0] range and put it into second * component of the destination vector. Rinse and repeat for * components Z and W. @@ -93,21 +90,23 @@ struct pipe_format_header * If any swizzle is 0 or 1, the corresponding destination component * should be filled with 0.0 and 1.0, respectively. */ -struct pipe_format_rgbazs +typedef uint pipe_format_rgbazs_t; + +static INLINE uint pf_get(pipe_format_rgbazs_t f, uint shift, uint mask) { - uint layout : 2; /**< PIPE_FORMAT_LAYOUT_RGBAZS */ - uint swizzleX : 3; /**< PIPE_FORMAT_COMP_ */ - uint swizzleY : 3; /**< PIPE_FORMAT_COMP_ */ - uint swizzleZ : 3; /**< PIPE_FORMAT_COMP_ */ - uint swizzleW : 3; /**< PIPE_FORMAT_COMP_ */ - uint sizeX : 3; /**< Size of X - 1 */ - uint sizeY : 3; /**< Size of Y - 1 */ - uint sizeZ : 3; /**< Size of Z - 1 */ - uint sizeW : 3; /**< Size of W - 1 */ - uint exp8 : 2; /**< Scale size by 8 ^ exp8 */ - uint type : 3; /**< PIPE_FORMAT_TYPE_ */ - uint padding : 1; -}; + return (f >> shift) & mask; +} + +#define pf_swizzle_x(f) pf_get(f, 2, 0x7) /**< PIPE_FORMAT_COMP_ */ +#define pf_swizzle_y(f) pf_get(f, 5, 0x7) /**< PIPE_FORMAT_COMP_ */ +#define pf_swizzle_z(f) pf_get(f, 8, 0x7) /**< PIPE_FORMAT_COMP_ */ +#define pf_swizzle_w(f) pf_get(f, 11, 0x7) /**< PIPE_FORMAT_COMP_ */ +#define pf_size_x(f) pf_get(f, 14, 0x7) /**< Size of X - 1 */ +#define pf_size_y(f) pf_get(f, 17, 0x7) /**< Size of Y - 1 */ +#define pf_size_z(f) pf_get(f, 20, 0x7) /**< Size of Z - 1 */ +#define pf_size_w(f) pf_get(f, 23, 0x7) /**< Size of W - 1 */ +#define pf_exp8(f) pf_get(f, 26, 0x3) /**< Scale size by 8 ^ exp8 */ +#define pf_type(f) pf_get(f, 28, 0xf) /**< PIPE_FORMAT_TYPE_ */ /** * Helper macro to encode the above structure into a 32-bit value. @@ -179,15 +178,10 @@ struct pipe_format_rgbazs */ /** - * This bitfields is simple. It only contains a flag that indicates whether the - * format is reversed or not. + * This only contains a flag that indicates whether the format is reversed or + * not. */ -struct pipe_format_ycbcr -{ - uint layout : 2; /**< PIPE_FORMAT_LAYOUT_YCBCR */ - uint reversed : 1; - uint padding : 29; -}; +typedef uint pipe_format_ycbcr_t; /** * Helper macro to encode the above structure into a 32-bit value. @@ -196,13 +190,10 @@ struct pipe_format_ycbcr (PIPE_FORMAT_LAYOUT_YCBCR << 0) |\ ((REV) << 2) ) -union pipe_format +static INLINE uint pf_rev(pipe_format_ycbcr_t f) { - uint value32; - struct pipe_format_header header; - struct pipe_format_rgbazs rgbazs; - struct pipe_format_ycbcr ycbcr; -}; + return (f >> 2) & 0x1; +} /** * Texture/surface image formats (preliminary) |