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* Copyright 2017 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkJumper_DEFINED
#define SkJumper_DEFINED
#include <stddef.h>
#include <stdint.h>
// This file contains definitions shared by SkJumper.cpp/SkJumper_stages.cpp
// and the rest of Skia. It is important to keep the interface to SkJumper
// limited and simple to avoid serious ODR violation pitfalls, especially when
// using Microsoft's <math.h> and similar headers with inline-but-not-static
// function definitions.
static const int SkJumper_kMaxStride = 16;
struct SkJumper_MemoryCtx {
void* pixels;
int stride;
struct SkJumper_GatherCtx {
const void* pixels;
int stride;
float width;
float height;
// State shared by save_xy, accumulate, and bilinear_* / bicubic_*.
struct SkJumper_SamplerCtx {
float x[SkJumper_kMaxStride];
float y[SkJumper_kMaxStride];
float fx[SkJumper_kMaxStride];
float fy[SkJumper_kMaxStride];
float scalex[SkJumper_kMaxStride];
float scaley[SkJumper_kMaxStride];
struct SkJumper_TileCtx {
float scale;
float invScale; // cache of 1/scale
struct SkJumper_DecalTileCtx {
uint32_t mask[SkJumper_kMaxStride];
float limit_x;
float limit_y;
struct SkJumper_CallbackCtx {
void (*fn)(SkJumper_CallbackCtx* self, int active_pixels/*<= SkJumper_kMaxStride*/);
// When called, fn() will have our active pixels available in rgba.
// When fn() returns, the pipeline will read back those active pixels from read_from.
float rgba[4*SkJumper_kMaxStride];
float* read_from = rgba;
// This should line up with the memory layout of SkColorSpaceTransferFn.
struct SkJumper_ParametricTransferFunction {
float G, A,B,C,D,E,F;
struct SkJumper_GradientCtx {
size_t stopCount;
float* fs[4];
float* bs[4];
float* ts;
struct SkJumper_2PtConicalCtx {
uint32_t fMask[SkJumper_kMaxStride];
float fP0,
struct SkJumper_UniformColorCtx {
float r,g,b,a;
uint16_t rgba[4]; // [0,255] in a 16-bit lane.