blob: 077486f926b4641ffca561186a0b8d10f06f24c8 [file] [log] [blame]
* Copyright 2019 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "include/core/SkColorFilter.h"
#include "include/core/SkRSXform.h"
#include "src/core/SkBlendModePriv.h"
#include "src/core/SkColorSpacePriv.h"
#include "src/core/SkColorSpaceXformSteps.h"
#include "src/core/SkCoreBlitters.h"
#include "src/core/SkDraw.h"
#include "src/core/SkMatrixProvider.h"
#include "src/core/SkRasterClip.h"
#include "src/core/SkRasterPipeline.h"
#include "src/core/SkScan.h"
#include "src/shaders/SkShaderBase.h"
#include "include/core/SkMatrix.h"
#include "src/core/SkScan.h"
static void fill_rect(const SkMatrix& ctm, const SkRasterClip& rc,
const SkRect& r, SkBlitter* blitter, SkPath* scratchPath) {
if (ctm.rectStaysRect()) {
SkRect dr;
ctm.mapRect(&dr, r);
SkScan::FillRect(dr, rc, blitter);
} else {
SkPoint pts[4];
ctm.mapPoints(pts, pts, 4);
scratchPath->addPoly(pts, 4, true);
SkScan::FillPath(*scratchPath, rc, blitter);
static void load_color(SkRasterPipeline_UniformColorCtx* ctx, const float rgba[]) {
// only need one of these. can I query the pipeline to know if its lowp or highp?
ctx->rgba[0] = SkScalarRoundToInt(rgba[0]*255); ctx->r = rgba[0];
ctx->rgba[1] = SkScalarRoundToInt(rgba[1]*255); ctx->g = rgba[1];
ctx->rgba[2] = SkScalarRoundToInt(rgba[2]*255); ctx->b = rgba[2];
ctx->rgba[3] = SkScalarRoundToInt(rgba[3]*255); ctx->a = rgba[3];
void SkDraw::drawAtlas(const SkImage* atlas, const SkRSXform xform[], const SkRect textures[],
const SkColor colors[], int count, SkBlendMode bmode, const SkPaint& paint) {
sk_sp<SkShader> atlasShader = atlas->makeShader();
if (!atlasShader) {
SkPaint p(paint);
p.setAntiAlias(false); // we never respect this for drawAtlas(or drawVertices)
SkSTArenaAlloc<256> alloc;
SkRasterPipeline pipeline(&alloc);
SkStageRec rec = {
&pipeline, &alloc, fDst.colorType(), fDst.colorSpace(), p, nullptr, *fMatrixProvider
SkStageUpdater* updator = as_SB(atlasShader.get())->appendUpdatableStages(rec);
if (!updator) {
SkDraw draw(*this);
for (int i = 0; i < count; ++i) {
if (colors) {
p.setShader(SkShaders::Blend(bmode, SkShaders::Color(colors[i]), atlasShader));
SkMatrix mx;
mx.preTranslate(-textures[i].fLeft, -textures[i].fTop);
SkPreConcatMatrixProvider matrixProvider(*fMatrixProvider, mx);
draw.fMatrixProvider = &matrixProvider;
draw.drawRect(textures[i], p);
SkRasterPipeline_UniformColorCtx* uniformCtx = nullptr;
SkColorSpaceXformSteps steps(sk_srgb_singleton(), kUnpremul_SkAlphaType,
rec.fDstCS, kUnpremul_SkAlphaType);
if (colors) {
// we will late-bind the values in ctx, once for each color in the loop
uniformCtx = alloc.make<SkRasterPipeline_UniformColorCtx>();
rec.fPipeline->append(SkRasterPipeline::uniform_color_dst, uniformCtx);
SkBlendMode_AppendStages(bmode, rec.fPipeline);
bool isOpaque = !colors && atlasShader->isOpaque();
if (p.getAlphaf() != 1) {
rec.fPipeline->append(SkRasterPipeline::scale_1_float, alloc.make<float>(p.getAlphaf()));
isOpaque = false;
if (auto blitter = SkCreateRasterPipelineBlitter(fDst, p, pipeline, isOpaque, &alloc,
fRC->clipShader())) {
SkPath scratchPath;
for (int i = 0; i < count; ++i) {
if (colors) {
SkColor4f c4 = SkColor4f::FromColor(colors[i]);
load_color(uniformCtx, c4.premul().vec());
SkMatrix mx;
mx.preTranslate(-textures[i].fLeft, -textures[i].fTop);
if (updator->update(mx, nullptr)) {
fill_rect(mx, *fRC, textures[i], blitter, &scratchPath);