4edb5d219e
guarded by SK_SUPPORT_OBSOLETE_LOCKPIXELS needs https://codereview.chromium.org/2820873002/# to land first Bug: skia:6481 Change-Id: I1c39902cbf6fe99f622adfa8192733b95f7fea09 Change-Id: I1c39902cbf6fe99f622adfa8192733b95f7fea09 Reviewed-on: https://skia-review.googlesource.com/13580 Reviewed-by: Florin Malita <fmalita@chromium.org> Reviewed-by: Leon Scroggins <scroggo@google.com> Commit-Queue: Mike Reed <reed@google.com>
631 lines
21 KiB
C++
631 lines
21 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "sk_tool_utils.h"
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#include "sk_tool_utils_flags.h"
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#include "Resources.h"
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#include "SkBitmap.h"
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#include "SkCanvas.h"
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#include "SkCommonFlags.h"
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#include "SkFontMgr.h"
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#include "SkFontStyle.h"
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#include "SkPixelRef.h"
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#include "SkPoint3.h"
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#include "SkShader.h"
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#include "SkTestScalerContext.h"
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#include "SkTextBlob.h"
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DEFINE_bool(portableFonts, false, "Use portable fonts");
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#if SK_SUPPORT_GPU
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#include "effects/GrSRGBEffect.h"
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#include "SkColorFilter.h"
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// Color filter that just wraps GrSRGBEffect
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class SkSRGBColorFilter : public SkColorFilter {
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public:
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static sk_sp<SkColorFilter> Make(GrSRGBEffect::Mode mode) {
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return sk_sp<SkColorFilter>(new SkSRGBColorFilter(mode));
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}
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sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*, SkColorSpace*) const override {
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return GrSRGBEffect::Make(fMode);
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}
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void filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const override {
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SK_ABORT("SkSRGBColorFilter is only implemented for GPU");
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}
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Factory getFactory() const override { return nullptr; }
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#ifndef SK_IGNORE_TO_STRING
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void toString(SkString* str) const override {}
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#endif
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private:
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SkSRGBColorFilter(GrSRGBEffect::Mode mode) : fMode(mode) {}
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GrSRGBEffect::Mode fMode;
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typedef SkColorFilter INHERITED;
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};
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#endif
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namespace sk_tool_utils {
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/* these are the default fonts chosen by Chrome for serif, sans-serif, and monospace */
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static const char* gStandardFontNames[][3] = {
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{ "Times", "Helvetica", "Courier" }, // Mac
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{ "Times New Roman", "Helvetica", "Courier" }, // iOS
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{ "Times New Roman", "Arial", "Courier New" }, // Win
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{ "Times New Roman", "Arial", "Monospace" }, // Ubuntu
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{ "serif", "sans-serif", "monospace" }, // Android
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{ "Tinos", "Arimo", "Cousine" } // ChromeOS
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};
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const char* platform_font_name(const char* name) {
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SkString platform = major_platform_os_name();
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int index;
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if (!strcmp(name, "serif")) {
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index = 0;
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} else if (!strcmp(name, "san-serif")) {
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index = 1;
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} else if (!strcmp(name, "monospace")) {
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index = 2;
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} else {
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return name;
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}
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if (platform.equals("Mac")) {
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return gStandardFontNames[0][index];
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}
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if (platform.equals("iOS")) {
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return gStandardFontNames[1][index];
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}
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if (platform.equals("Win")) {
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return gStandardFontNames[2][index];
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}
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if (platform.equals("Ubuntu")) {
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return gStandardFontNames[3][index];
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}
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if (platform.equals("Android")) {
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return gStandardFontNames[4][index];
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}
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if (platform.equals("ChromeOS")) {
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return gStandardFontNames[5][index];
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}
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return name;
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}
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const char* platform_os_emoji() {
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const char* osName = platform_os_name();
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if (!strcmp(osName, "Android") || !strcmp(osName, "Ubuntu")) {
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return "CBDT";
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}
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if (!strncmp(osName, "Mac", 3) || !strncmp(osName, "iOS", 3)) {
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return "SBIX";
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}
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if (!strncmp(osName, "Win", 3)) {
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return "COLR";
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}
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return "";
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}
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sk_sp<SkTypeface> emoji_typeface() {
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if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
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return MakeResourceAsTypeface("/fonts/Funkster.ttf");
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}
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if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX")) {
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return SkTypeface::MakeFromName("Apple Color Emoji", SkFontStyle());
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}
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if (!strcmp(sk_tool_utils::platform_os_emoji(), "COLR")) {
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sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
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const char *colorEmojiFontName = "Segoe UI Emoji";
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sk_sp<SkTypeface> typeface(fm->matchFamilyStyle(colorEmojiFontName, SkFontStyle()));
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if (typeface) {
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return typeface;
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}
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sk_sp<SkTypeface> fallback(fm->matchFamilyStyleCharacter(
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colorEmojiFontName, SkFontStyle(), nullptr /* bcp47 */, 0 /* bcp47Count */,
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0x1f4b0 /* character: 💰 */));
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if (fallback) {
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return fallback;
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}
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// If we don't have Segoe UI Emoji and can't find a fallback, try Segoe UI Symbol.
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// Windows 7 does not have Segoe UI Emoji; Segoe UI Symbol has the (non - color) emoji.
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return SkTypeface::MakeFromName("Segoe UI Symbol", SkFontStyle());
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}
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return nullptr;
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}
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const char* emoji_sample_text() {
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if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
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return "Hamburgefons";
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}
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if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX") ||
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!strcmp(sk_tool_utils::platform_os_emoji(), "COLR"))
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{
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return "\xF0\x9F\x92\xB0" "\xF0\x9F\x8F\xA1" "\xF0\x9F\x8E\x85" // 💰🏡🎅
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"\xF0\x9F\x8D\xAA" "\xF0\x9F\x8D\x95" "\xF0\x9F\x9A\x80" // 🍪🍕🚀
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"\xF0\x9F\x9A\xBB" "\xF0\x9F\x92\xA9" "\xF0\x9F\x93\xB7" // 🚻💩📷
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"\xF0\x9F\x93\xA6" // 📦
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"\xF0\x9F\x87\xBA" "\xF0\x9F\x87\xB8" "\xF0\x9F\x87\xA6"; // 🇺🇸🇦
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}
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return "";
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}
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const char* platform_os_name() {
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for (int index = 0; index < FLAGS_key.count(); index += 2) {
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if (!strcmp("os", FLAGS_key[index])) {
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return FLAGS_key[index + 1];
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}
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}
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// when running SampleApp or dm without a --key pair, omit the platform name
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return "";
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}
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// omit version number in returned value
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SkString major_platform_os_name() {
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SkString name;
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for (int index = 0; index < FLAGS_key.count(); index += 2) {
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if (!strcmp("os", FLAGS_key[index])) {
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const char* platform = FLAGS_key[index + 1];
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const char* end = platform;
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while (*end && (*end < '0' || *end > '9')) {
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++end;
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}
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name.append(platform, end - platform);
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break;
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}
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}
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return name;
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}
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const char* platform_extra_config(const char* config) {
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for (int index = 0; index < FLAGS_key.count(); index += 2) {
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if (!strcmp("extra_config", FLAGS_key[index]) && !strcmp(config, FLAGS_key[index + 1])) {
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return config;
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}
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}
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return "";
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}
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const char* colortype_name(SkColorType ct) {
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switch (ct) {
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case kUnknown_SkColorType: return "Unknown";
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case kAlpha_8_SkColorType: return "Alpha_8";
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case kIndex_8_SkColorType: return "Index_8";
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case kARGB_4444_SkColorType: return "ARGB_4444";
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case kRGB_565_SkColorType: return "RGB_565";
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case kRGBA_8888_SkColorType: return "RGBA_8888";
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case kBGRA_8888_SkColorType: return "BGRA_8888";
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case kRGBA_F16_SkColorType: return "RGBA_F16";
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default:
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SkASSERT(false);
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return "unexpected colortype";
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}
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}
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SkColor color_to_565(SkColor color) {
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SkPMColor pmColor = SkPreMultiplyColor(color);
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U16CPU color16 = SkPixel32ToPixel16(pmColor);
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return SkPixel16ToColor(color16);
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}
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sk_sp<SkTypeface> create_portable_typeface(const char* name, SkFontStyle style) {
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return create_font(name, style);
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}
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void set_portable_typeface(SkPaint* paint, const char* name, SkFontStyle style) {
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paint->setTypeface(create_font(name, style));
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}
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void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y,
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SkColorType colorType, SkAlphaType alphaType) {
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SkBitmap tmp(bitmap);
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const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType);
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canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y);
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}
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sk_sp<SkShader> create_checkerboard_shader(SkColor c1, SkColor c2, int size) {
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SkBitmap bm;
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bm.allocPixels(SkImageInfo::MakeS32(2 * size, 2 * size, kPremul_SkAlphaType));
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bm.eraseColor(c1);
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bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
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bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
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return SkShader::MakeBitmapShader(
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bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
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}
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SkBitmap create_checkerboard_bitmap(int w, int h, SkColor c1, SkColor c2, int checkSize) {
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SkBitmap bitmap;
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bitmap.allocPixels(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
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SkCanvas canvas(bitmap);
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sk_tool_utils::draw_checkerboard(&canvas, c1, c2, checkSize);
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return bitmap;
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}
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void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) {
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SkPaint paint;
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paint.setShader(create_checkerboard_shader(c1, c2, size));
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paint.setBlendMode(SkBlendMode::kSrc);
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canvas->drawPaint(paint);
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}
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SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y,
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int textSize, const char* str) {
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SkBitmap bitmap;
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bitmap.allocN32Pixels(w, h);
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SkCanvas canvas(bitmap);
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setColor(c);
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paint.setTextSize(SkIntToScalar(textSize));
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canvas.clear(0x00000000);
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canvas.drawText(str, strlen(str), SkIntToScalar(x), SkIntToScalar(y), paint);
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// Tag data as sRGB (without doing any color space conversion). Color-space aware configs
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// will process this correctly but legacy configs will render as if this returned N32.
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SkBitmap result;
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result.setInfo(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
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result.setPixelRef(sk_ref_sp(bitmap.pixelRef()), 0, 0);
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return result;
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}
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void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
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SkScalar x, SkScalar y) {
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SkPaint paint(origPaint);
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SkTDArray<uint16_t> glyphs;
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size_t len = strlen(text);
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glyphs.append(paint.textToGlyphs(text, len, nullptr));
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paint.textToGlyphs(text, len, glyphs.begin());
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paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y,
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nullptr);
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memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
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}
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static inline void norm_to_rgb(SkBitmap* bm, int x, int y, const SkVector3& norm) {
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SkASSERT(SkScalarNearlyEqual(norm.length(), 1.0f));
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unsigned char r = static_cast<unsigned char>((0.5f * norm.fX + 0.5f) * 255);
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unsigned char g = static_cast<unsigned char>((-0.5f * norm.fY + 0.5f) * 255);
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unsigned char b = static_cast<unsigned char>((0.5f * norm.fZ + 0.5f) * 255);
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*bm->getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b);
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}
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void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst) {
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const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
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dst.fTop + (dst.height() / 2.0f));
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const SkPoint halfSize = SkPoint::Make(dst.width() / 2.0f, dst.height() / 2.0f);
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SkVector3 norm;
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for (int y = dst.fTop; y < dst.fBottom; ++y) {
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for (int x = dst.fLeft; x < dst.fRight; ++x) {
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norm.fX = (x + 0.5f - center.fX) / halfSize.fX;
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norm.fY = (y + 0.5f - center.fY) / halfSize.fY;
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SkScalar tmp = norm.fX * norm.fX + norm.fY * norm.fY;
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if (tmp >= 1.0f) {
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norm.set(0.0f, 0.0f, 1.0f);
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} else {
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norm.fZ = sqrtf(1.0f - tmp);
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}
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norm_to_rgb(bm, x, y, norm);
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}
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}
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}
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void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) {
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const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
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dst.fTop + (dst.height() / 2.0f));
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SkIRect inner = dst;
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inner.inset(dst.width()/4, dst.height()/4);
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SkPoint3 norm;
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const SkPoint3 left = SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
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const SkPoint3 up = SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
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const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
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const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
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for (int y = dst.fTop; y < dst.fBottom; ++y) {
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for (int x = dst.fLeft; x < dst.fRight; ++x) {
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if (inner.contains(x, y)) {
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norm.set(0.0f, 0.0f, 1.0f);
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} else {
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SkScalar locX = x + 0.5f - center.fX;
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SkScalar locY = y + 0.5f - center.fY;
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if (locX >= 0.0f) {
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if (locY > 0.0f) {
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norm = locX >= locY ? right : down; // LR corner
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} else {
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norm = locX > -locY ? right : up; // UR corner
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}
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} else {
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if (locY > 0.0f) {
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norm = -locX > locY ? left : down; // LL corner
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} else {
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norm = locX > locY ? up : left; // UL corner
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}
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}
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}
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norm_to_rgb(bm, x, y, norm);
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}
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}
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}
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void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst) {
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const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
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dst.fTop + (dst.height() / 2.0f));
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static const SkScalar k1OverRoot3 = 0.5773502692f;
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SkPoint3 norm;
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const SkPoint3 leftUp = SkPoint3::Make(-k1OverRoot3, -k1OverRoot3, k1OverRoot3);
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const SkPoint3 rightUp = SkPoint3::Make(k1OverRoot3, -k1OverRoot3, k1OverRoot3);
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const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
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for (int y = dst.fTop; y < dst.fBottom; ++y) {
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for (int x = dst.fLeft; x < dst.fRight; ++x) {
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SkScalar locX = x + 0.5f - center.fX;
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SkScalar locY = y + 0.5f - center.fY;
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if (locX >= 0.0f) {
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if (locY > 0.0f) {
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norm = locX >= locY ? rightUp : down; // LR corner
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} else {
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norm = rightUp;
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}
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} else {
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if (locY > 0.0f) {
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norm = -locX > locY ? leftUp : down; // LL corner
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} else {
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norm = leftUp;
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}
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}
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norm_to_rgb(bm, x, y, norm);
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}
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}
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}
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#if defined(_MSC_VER)
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// MSVC takes ~2 minutes to compile this function with optimization.
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// We don't really care to wait that long for this function.
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#pragma optimize("", off)
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#endif
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void make_big_path(SkPath& path) {
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#include "BigPathBench.inc"
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}
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static float gaussian2d_value(int x, int y, float sigma) {
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// don't bother with the scale term since we're just going to normalize the
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// kernel anyways
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float temp = expf(-(x*x + y*y)/(2*sigma*sigma));
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return temp;
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}
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static float* create_2d_kernel(float sigma, int* filterSize) {
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// We will actually take 2*halfFilterSize+1 samples (i.e., our filter kernel
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// sizes are always odd)
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int halfFilterSize = SkScalarCeilToInt(6*sigma)/2;
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int wh = *filterSize = 2*halfFilterSize + 1;
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float* temp = new float[wh*wh];
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float filterTot = 0.0f;
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for (int yOff = 0; yOff < wh; ++yOff) {
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for (int xOff = 0; xOff < wh; ++xOff) {
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temp[yOff*wh+xOff] = gaussian2d_value(xOff-halfFilterSize, yOff-halfFilterSize, sigma);
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filterTot += temp[yOff*wh+xOff];
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}
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}
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// normalize the kernel
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for (int yOff = 0; yOff < wh; ++yOff) {
|
|
for (int xOff = 0; xOff < wh; ++xOff) {
|
|
temp[yOff*wh+xOff] /= filterTot;
|
|
}
|
|
}
|
|
|
|
return temp;
|
|
}
|
|
|
|
static SkPMColor blur_pixel(const SkBitmap& bm, int x, int y, float* kernel, int wh) {
|
|
SkASSERT(wh & 0x1);
|
|
|
|
int halfFilterSize = (wh-1)/2;
|
|
|
|
float r = 0.0f, g = 0.0f, b = 0.0f;
|
|
for (int yOff = 0; yOff < wh; ++yOff) {
|
|
int ySamp = y + yOff - halfFilterSize;
|
|
|
|
if (ySamp < 0) {
|
|
ySamp = 0;
|
|
} else if (ySamp > bm.height()-1) {
|
|
ySamp = bm.height()-1;
|
|
}
|
|
|
|
for (int xOff = 0; xOff < wh; ++xOff) {
|
|
int xSamp = x + xOff - halfFilterSize;
|
|
|
|
if (xSamp < 0) {
|
|
xSamp = 0;
|
|
} else if (xSamp > bm.width()-1) {
|
|
xSamp = bm.width()-1;
|
|
}
|
|
|
|
float filter = kernel[yOff*wh + xOff];
|
|
|
|
SkPMColor c = *bm.getAddr32(xSamp, ySamp);
|
|
|
|
r += SkGetPackedR32(c) * filter;
|
|
g += SkGetPackedG32(c) * filter;
|
|
b += SkGetPackedB32(c) * filter;
|
|
}
|
|
}
|
|
|
|
U8CPU r8, g8, b8;
|
|
|
|
r8 = (U8CPU) (r+0.5f);
|
|
g8 = (U8CPU) (g+0.5f);
|
|
b8 = (U8CPU) (b+0.5f);
|
|
|
|
return SkPackARGB32(255, r8, g8, b8);
|
|
}
|
|
|
|
SkBitmap slow_blur(const SkBitmap& src, float sigma) {
|
|
SkBitmap dst;
|
|
|
|
dst.allocN32Pixels(src.width(), src.height(), true);
|
|
|
|
int wh;
|
|
std::unique_ptr<float[]> kernel(create_2d_kernel(sigma, &wh));
|
|
|
|
for (int y = 0; y < src.height(); ++y) {
|
|
for (int x = 0; x < src.width(); ++x) {
|
|
*dst.getAddr32(x, y) = blur_pixel(src, x, y, kernel.get(), wh);
|
|
}
|
|
}
|
|
|
|
return dst;
|
|
}
|
|
|
|
// compute the intersection point between the diagonal and the ellipse in the
|
|
// lower right corner
|
|
static SkPoint intersection(SkScalar w, SkScalar h) {
|
|
SkASSERT(w > 0.0f || h > 0.0f);
|
|
|
|
return SkPoint::Make(w / SK_ScalarSqrt2, h / SK_ScalarSqrt2);
|
|
}
|
|
|
|
// Use the intersection of the corners' diagonals with their ellipses to shrink
|
|
// the bounding rect
|
|
SkRect compute_central_occluder(const SkRRect& rr) {
|
|
const SkRect r = rr.getBounds();
|
|
|
|
SkScalar newL = r.fLeft, newT = r.fTop, newR = r.fRight, newB = r.fBottom;
|
|
|
|
SkVector radii = rr.radii(SkRRect::kUpperLeft_Corner);
|
|
if (!radii.isZero()) {
|
|
SkPoint p = intersection(radii.fX, radii.fY);
|
|
|
|
newL = SkTMax(newL, r.fLeft + radii.fX - p.fX);
|
|
newT = SkTMax(newT, r.fTop + radii.fY - p.fY);
|
|
}
|
|
|
|
radii = rr.radii(SkRRect::kUpperRight_Corner);
|
|
if (!radii.isZero()) {
|
|
SkPoint p = intersection(radii.fX, radii.fY);
|
|
|
|
newR = SkTMin(newR, r.fRight + p.fX - radii.fX);
|
|
newT = SkTMax(newT, r.fTop + radii.fY - p.fY);
|
|
}
|
|
|
|
radii = rr.radii(SkRRect::kLowerRight_Corner);
|
|
if (!radii.isZero()) {
|
|
SkPoint p = intersection(radii.fX, radii.fY);
|
|
|
|
newR = SkTMin(newR, r.fRight + p.fX - radii.fX);
|
|
newB = SkTMin(newB, r.fBottom - radii.fY + p.fY);
|
|
}
|
|
|
|
radii = rr.radii(SkRRect::kLowerLeft_Corner);
|
|
if (!radii.isZero()) {
|
|
SkPoint p = intersection(radii.fX, radii.fY);
|
|
|
|
newL = SkTMax(newL, r.fLeft + radii.fX - p.fX);
|
|
newB = SkTMin(newB, r.fBottom - radii.fY + p.fY);
|
|
}
|
|
|
|
return SkRect::MakeLTRB(newL, newT, newR, newB);
|
|
}
|
|
|
|
// The widest inset rect
|
|
SkRect compute_widest_occluder(const SkRRect& rr) {
|
|
const SkRect& r = rr.getBounds();
|
|
|
|
const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner);
|
|
const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner);
|
|
const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner);
|
|
const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner);
|
|
|
|
SkScalar maxT = SkTMax(ul.fY, ur.fY);
|
|
SkScalar maxB = SkTMax(ll.fY, lr.fY);
|
|
|
|
return SkRect::MakeLTRB(r.fLeft, r.fTop + maxT, r.fRight, r.fBottom - maxB);
|
|
|
|
}
|
|
|
|
// The tallest inset rect
|
|
SkRect compute_tallest_occluder(const SkRRect& rr) {
|
|
const SkRect& r = rr.getBounds();
|
|
|
|
const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner);
|
|
const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner);
|
|
const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner);
|
|
const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner);
|
|
|
|
SkScalar maxL = SkTMax(ul.fX, ll.fX);
|
|
SkScalar maxR = SkTMax(ur.fX, lr.fX);
|
|
|
|
return SkRect::MakeLTRB(r.fLeft + maxL, r.fTop, r.fRight - maxR, r.fBottom);
|
|
}
|
|
|
|
void copy_to_g8(SkBitmap* dst, const SkBitmap& src) {
|
|
SkASSERT(kBGRA_8888_SkColorType == src.colorType() ||
|
|
kRGBA_8888_SkColorType == src.colorType());
|
|
|
|
SkImageInfo grayInfo = src.info().makeColorType(kGray_8_SkColorType);
|
|
dst->allocPixels(grayInfo);
|
|
uint8_t* dst8 = (uint8_t*)dst->getPixels();
|
|
const uint32_t* src32 = (const uint32_t*)src.getPixels();
|
|
|
|
const int w = src.width();
|
|
const int h = src.height();
|
|
const bool isBGRA = (kBGRA_8888_SkColorType == src.colorType());
|
|
for (int y = 0; y < h; ++y) {
|
|
if (isBGRA) {
|
|
// BGRA
|
|
for (int x = 0; x < w; ++x) {
|
|
uint32_t s = src32[x];
|
|
dst8[x] = SkComputeLuminance((s >> 16) & 0xFF, (s >> 8) & 0xFF, s & 0xFF);
|
|
}
|
|
} else {
|
|
// RGBA
|
|
for (int x = 0; x < w; ++x) {
|
|
uint32_t s = src32[x];
|
|
dst8[x] = SkComputeLuminance(s & 0xFF, (s >> 8) & 0xFF, (s >> 16) & 0xFF);
|
|
}
|
|
}
|
|
src32 = (const uint32_t*)((const char*)src32 + src.rowBytes());
|
|
dst8 += dst->rowBytes();
|
|
}
|
|
}
|
|
|
|
#if SK_SUPPORT_GPU
|
|
sk_sp<SkColorFilter> MakeLinearToSRGBColorFilter() {
|
|
return SkSRGBColorFilter::Make(GrSRGBEffect::Mode::kLinearToSRGB);
|
|
}
|
|
|
|
sk_sp<SkColorFilter> MakeSRGBToLinearColorFilter() {
|
|
return SkSRGBColorFilter::Make(GrSRGBEffect::Mode::kSRGBToLinear);
|
|
}
|
|
#endif
|
|
|
|
} // namespace sk_tool_utils
|