blob: 5968ebbcf4defc1b38de9c57279ce2ed725473a7 [file] [log] [blame]
/*
* 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 "include/effects/SkOverdrawColorFilter.h"
#include "include/core/SkColorFilter.h"
#ifdef SK_ENABLE_SKSL
#include "include/core/SkAlphaType.h"
#include "include/core/SkData.h"
#include "include/effects/SkRuntimeEffect.h"
#include "include/private/SkColorData.h"
#include "src/core/SkRuntimeEffectPriv.h"
#include <utility>
sk_sp<SkColorFilter> SkOverdrawColorFilter::MakeWithSkColors(const SkColor colors[kNumColors]) {
static const SkRuntimeEffect* effect = SkMakeCachedRuntimeEffect(
SkRuntimeEffect::MakeForColorFilter,
"uniform half4 color0;"
"uniform half4 color1;"
"uniform half4 color2;"
"uniform half4 color3;"
"uniform half4 color4;"
"uniform half4 color5;"
"half4 main(half4 color) {"
"half alpha = 255.0 * color.a;"
"color = alpha < 0.5 ? color0"
": alpha < 1.5 ? color1"
": alpha < 2.5 ? color2"
": alpha < 3.5 ? color3"
": alpha < 4.5 ? color4 : color5;"
"return color;"
"}"
).release();
if (effect) {
auto data = SkData::MakeUninitialized(kNumColors * sizeof(SkPMColor4f));
SkPMColor4f* premul = (SkPMColor4f*)data->writable_data();
for (int i = 0; i < kNumColors; ++i) {
premul[i] = SkColor4f::FromColor(colors[i]).premul();
}
return effect->makeColorFilter(std::move(data));
}
return nullptr;
}
#else // SK_ENABLE_SKSL
sk_sp<SkColorFilter> SkOverdrawColorFilter::MakeWithSkColors(const SkColor colors[kNumColors]) {
// TODO(skia:12197)
return nullptr;
}
#endif