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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkArenaAlloc.h"
#include "SkOverdrawColorFilter.h"
#include "SkPM4f.h"
#include "SkRasterPipeline.h"
#include "SkReadBuffer.h"
#include "../jumper/SkJumper.h"
void SkOverdrawColorFilter::onAppendStages(SkRasterPipeline* p,
SkColorSpace* dstCS,
SkArenaAlloc* alloc,
bool shader_is_opaque) const {
struct Ctx : public SkJumper_CallbackCtx {
const SkPMColor* colors;
};
// TODO: do we care about transforming to dstCS?
auto ctx = alloc->make<Ctx>();
ctx->colors = fColors;
ctx->fn = [](SkJumper_CallbackCtx* arg, int active_pixels) {
auto ctx = (Ctx*)arg;
auto pixels = (SkPM4f*)ctx->rgba;
for (int i = 0; i < active_pixels; i++) {
uint8_t alpha = (int)(pixels[i].a() * 255);
if (alpha >= kNumColors) {
alpha = kNumColors - 1;
}
pixels[i] = SkPM4f::FromPMColor(ctx->colors[alpha]);
}
};
p->append(SkRasterPipeline::callback, ctx);
}
void SkOverdrawColorFilter::flatten(SkWriteBuffer& buffer) const {
buffer.writeByteArray(fColors, kNumColors * sizeof(SkPMColor));
}
sk_sp<SkFlattenable> SkOverdrawColorFilter::CreateProc(SkReadBuffer& buffer) {
SkPMColor colors[kNumColors];
size_t size = buffer.getArrayCount();
if (!buffer.validate(size == sizeof(colors))) {
return nullptr;
}
if (!buffer.readByteArray(colors, sizeof(colors))) {
return nullptr;
}
return SkOverdrawColorFilter::Make(colors);
}
SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkOverdrawColorFilter)
SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkOverdrawColorFilter)
SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END
#if SK_SUPPORT_GPU
#include "effects/GrOverdrawFragmentProcessor.h"
std::unique_ptr<GrFragmentProcessor> SkOverdrawColorFilter::asFragmentProcessor(
GrContext*, const GrColorSpaceInfo&) const {
return GrOverdrawFragmentProcessor::Make(fColors[0], fColors[1], fColors[2], fColors[3],
fColors[4], fColors[5]);
}
#endif
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