GrColor.h File Reference

#include "include/core/SkColor.h"
#include "include/core/SkColorPriv.h"
#include "include/gpu/GrTypes.h"
#include "include/private/SkColorData.h"
#include "src/base/SkHalf.h"
#include "src/gpu/BufferWriter.h"

Go to the source code of this file.

Macros
#define	GrColor_SHIFT_R   0
#define	GrColor_SHIFT_G   8
#define	GrColor_SHIFT_B   16
#define	GrColor_SHIFT_A   24
#define	GrColorUnpackR(color)   (((color) >> GrColor_SHIFT_R) & 0xFF)
#define	GrColorUnpackG(color)   (((color) >> GrColor_SHIFT_G) & 0xFF)
#define	GrColorUnpackB(color)   (((color) >> GrColor_SHIFT_B) & 0xFF)
#define	GrColorUnpackA(color)   (((color) >> GrColor_SHIFT_A) & 0xFF)
#define	GrColor_ILLEGAL   (~(0xFF << GrColor_SHIFT_A))

Typedefs
typedef uint32_t	GrColor

Functions
static GrColor	GrColorPackRGBA (unsigned r, unsigned g, unsigned b, unsigned a)
static float	GrNormalizeByteToFloat (uint8_t value)
static bool	SkPMColor4fFitsInBytes (const SkPMColor4f &color)
static uint64_t	SkPMColor4f_toFP16 (const SkPMColor4f &color)

Macro Definition Documentation

GrColor_ILLEGAL

#define GrColor_ILLEGAL   (~(0xFF << GrColor_SHIFT_A))

Since premultiplied means that alpha >= color, we construct a color with each component==255 and alpha == 0 to be "illegal"

Definition at line 68 of file GrColor.h.

GrColor_SHIFT_A

#define GrColor_SHIFT_A   24

Definition at line 40 of file GrColor.h.

GrColor_SHIFT_B

#define GrColor_SHIFT_B   16

Definition at line 39 of file GrColor.h.

GrColor_SHIFT_G

#define GrColor_SHIFT_G   8

Definition at line 38 of file GrColor.h.

GrColor_SHIFT_R

#define GrColor_SHIFT_R   0

Definition at line 37 of file GrColor.h.

GrColorUnpackA

#define GrColorUnpackA

(

color

)

(((color) >> GrColor_SHIFT_A) & 0xFF)

Definition at line 62 of file GrColor.h.

GrColorUnpackB

#define GrColorUnpackB

(

color

)

(((color) >> GrColor_SHIFT_B) & 0xFF)

Definition at line 61 of file GrColor.h.

GrColorUnpackG

#define GrColorUnpackG

(

color

)

(((color) >> GrColor_SHIFT_G) & 0xFF)

Definition at line 60 of file GrColor.h.

GrColorUnpackR

#define GrColorUnpackR

(

color

)

(((color) >> GrColor_SHIFT_R) & 0xFF)

Definition at line 59 of file GrColor.h.

Typedef Documentation

GrColor

typedef uint32_t GrColor

GrColor is 4 bytes for R, G, B, A, in a specific order defined below. Whether the color is premultiplied or not depends on the context in which it is being used.

Definition at line 25 of file GrColor.h.

Function Documentation

GrColorPackRGBA()

static GrColor GrColorPackRGBA ( unsigned  r, unsigned  g, unsigned  b, unsigned  a  )

inlinestatic

Pack 4 components (RGBA) into a GrColor int

Definition at line 46 of file GrColor.h.

                                                                                      {
    SkASSERT((uint8_t)r == r);
    SkASSERT((uint8_t)g == g);
    SkASSERT((uint8_t)b == b);
    SkASSERT((uint8_t)a == a);
    return  (r << GrColor_SHIFT_R) |
            (g << GrColor_SHIFT_G) |
            (b << GrColor_SHIFT_B) |
            (a << GrColor_SHIFT_A);
}

GrNormalizeByteToFloat()

static float GrNormalizeByteToFloat ( uint8_t  value )

inlinestatic

Normalizes and coverts an uint8_t to a float. [0, 255] -> [0.0, 1.0]

Definition at line 71 of file GrColor.h.

                                                          {
    static const float ONE_OVER_255 = 1.f / 255.f;
    return value * ONE_OVER_255;
}

SkPMColor4f_toFP16()

static uint64_t SkPMColor4f_toFP16 ( const SkPMColor4f &  color )

inlinestatic

Definition at line 82 of file GrColor.h.

                                                                    {
    uint64_t halfColor;
    to_half(skvx::float4::Load(color.vec())).store(&halfColor);
    return halfColor;
}

SkPMColor4fFitsInBytes()

static bool SkPMColor4fFitsInBytes ( const SkPMColor4f &  color )

inlinestatic

Used to pick vertex attribute types.

Definition at line 77 of file GrColor.h.

                                                                    {
    // Might want to instead check that the components are [0...a] instead of [0...1]?
    return color.fitsInBytes();
}