blob: c3f354ae6c9ffa2d0e4c8792a55f3c8ce1ff59f3 [file] [log] [blame]
* Copyright 2023 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "src/shaders/SkTriColorShader.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPoint.h"
#include "include/core/SkTypes.h"
#include "include/private/SkColorData.h"
#include "src/base/SkVx.h"
#include "src/core/SkEffectPriv.h"
#include "src/core/SkRasterPipeline.h"
#include "src/core/SkRasterPipelineOpList.h"
bool SkTriColorShader::appendStages(const SkStageRec& rec, const SkShaders::MatrixRec&) const {
if (fUsePersp) {
rec.fPipeline->append(SkRasterPipelineOp::matrix_perspective, &fM33);
rec.fPipeline->append(SkRasterPipelineOp::matrix_4x3, &fM43);
return true;
bool SkTriColorShader::update(const SkMatrix& ctmInv,
const SkPoint pts[],
const SkPMColor4f colors[],
int index0,
int index1,
int index2) {
SkMatrix m, im;
m.set(0, pts[index1].fX - pts[index0].fX);
m.set(1, pts[index2].fX - pts[index0].fX);
m.set(2, pts[index0].fX);
m.set(3, pts[index1].fY - pts[index0].fY);
m.set(4, pts[index2].fY - pts[index0].fY);
m.set(5, pts[index0].fY);
if (!m.invert(&im)) {
return false;
fM33.setConcat(im, ctmInv);
auto c0 = skvx::float4::Load(colors[index0].vec()),
c1 = skvx::float4::Load(colors[index1].vec()),
c2 = skvx::float4::Load(colors[index2].vec());
(c1 - c0).store(&fM43.fMat[0]);
(c2 - c0).store(&fM43.fMat[4]);[8]);
if (!fUsePersp) {
fM43.setConcat(fM43, fM33);
return true;