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skia2/gm/aaxfermodes.cpp

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Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkArithmeticMode.h"
IWYU: 'core' target, files starting A-C. TBR=reed@google.com Verbal lgtm, does not change API. Committed: https://skia.googlesource.com/skia/+/7403d87db8e43d4c2b5b25ac22a0ebc22bd09d69 Review URL: https://codereview.chromium.org/1265033002
2015-08-05 20:57:49 +00:00
#include "SkPath.h"
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
#include "SkShader.h"
#include "SkXfermode.h"
enum {
kXfermodeCount = SkXfermode::kLastMode + 2, // All xfermodes plus arithmetic mode.
kShapeSize = 22,
kShapeSpacing = 36,
kShapeTypeSpacing = 4 * kShapeSpacing / 3,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kPaintSpacing = 4 * kShapeTypeSpacing,
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
kLabelSpacing = 3 * kShapeSize,
kMargin = kShapeSpacing / 2,
kXfermodeTypeSpacing = kLabelSpacing + 2 * kPaintSpacing + kShapeTypeSpacing,
kTitleSpacing = 3 * kShapeSpacing / 4,
kSubtitleSpacing = 5 * kShapeSpacing / 8
};
static const SkColor kBGColor = SkColorSetARGB(200, 210, 184, 135);
static const SkColor kShapeColors[2] = {
SkColorSetARGB(130, 255, 0, 128), // input color unknown
SkColorSetARGB(255, 0, 255, 255) // input color opaque
};
enum Shape {
kSquare_Shape,
kDiamond_Shape,
kOval_Shape,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kConcave_Shape,
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kLast_Shape = kConcave_Shape
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
};
namespace skiagm {
/**
* Verifies AA works properly on all Xfermodes, including arithmetic, with both opaque and unknown
* src colors.
*/
class AAXfermodesGM : public GM {
public:
AAXfermodesGM() {}
protected:
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
enum DrawingPass {
kCheckerboard_Pass,
kBackground_Pass,
kShape_Pass
};
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
SkString onShortName() override {
return SkString("aaxfermodes");
}
SkISize onISize() override {
return SkISize::Make(2 * kMargin + 2 * kXfermodeTypeSpacing -
(kXfermodeTypeSpacing - (kLabelSpacing + 2 * kPaintSpacing)),
2 * kMargin + kTitleSpacing + kSubtitleSpacing +
(1 + SkXfermode::kLastCoeffMode) * kShapeSpacing);
}
void onOnceBeforeDraw() override {
fLabelPaint.setAntiAlias(true);
rename portable_typeface_always to portable_typeface TBR=reed@google.com Review URL: https://codereview.chromium.org/1257773002
2015-07-24 19:09:25 +00:00
sk_tool_utils::set_portable_typeface(&fLabelPaint);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
fLabelPaint.setTextSize(5 * kShapeSize/8);
fLabelPaint.setSubpixelText(true);
static const SkScalar radius = -1.4f * kShapeSize/2;
SkPoint pts[4] = {
{-radius, 0},
{0, -1.33f * radius},
{radius, 0},
{0, 1.33f * radius}
};
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
fOval.moveTo(pts[0]);
fOval.quadTo(pts[1], pts[2]);
fOval.quadTo(pts[3], pts[0]);
fConcave.moveTo(-radius, 0);
fConcave.quadTo(0, 0, 0, -radius);
fConcave.quadTo(0, 0, radius, 0);
fConcave.quadTo(0, 0, 0, radius);
fConcave.quadTo(0, 0, -radius, 0);
fConcave.close();
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
}
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
void draw_pass(SkCanvas* canvas, DrawingPass drawingPass) {
SkRect clipRect =
{ -kShapeSize*11/16, -kShapeSize*11/16, kShapeSize*11/16, kShapeSize*11/16 };
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
canvas->save();
if (kCheckerboard_Pass == drawingPass) {
canvas->translate(kMargin, kMargin);
}
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
canvas->translate(0, kTitleSpacing);
for (size_t xfermodeSet = 0; xfermodeSet < 2; xfermodeSet++) {
size_t firstMode = (SkXfermode::kLastCoeffMode + 1) * xfermodeSet;
canvas->save();
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
if (kShape_Pass == drawingPass) {
fLabelPaint.setTextAlign(SkPaint::kCenter_Align);
canvas->drawText("Src Unknown", sizeof("Src Unknown") - 1,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kLabelSpacing + kShapeTypeSpacing * 1.5f + kShapeSpacing / 2,
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
kSubtitleSpacing / 2 + fLabelPaint.getTextSize() / 3, fLabelPaint);
canvas->drawText("Src Opaque", sizeof("Src Opaque") - 1,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kLabelSpacing + kShapeTypeSpacing * 1.5f + kShapeSpacing / 2 +
kPaintSpacing, kSubtitleSpacing / 2 + fLabelPaint.getTextSize() / 3,
fLabelPaint);
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
}
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
canvas->translate(0, kSubtitleSpacing + kShapeSpacing/2);
for (size_t m = 0; m <= SkXfermode::kLastCoeffMode; m++) {
SkXfermode::Mode mode = static_cast<SkXfermode::Mode>(firstMode + m);
canvas->save();
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
if (kShape_Pass == drawingPass) {
this->drawModeName(canvas, mode);
}
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
canvas->translate(kLabelSpacing + kShapeSpacing/2, 0);
for (size_t colorIdx = 0; colorIdx < SK_ARRAY_COUNT(kShapeColors); colorIdx++) {
SkPaint paint;
this->setupShapePaint(canvas, kShapeColors[colorIdx], mode, &paint);
SkASSERT(colorIdx == 0 || 255 == paint.getAlpha());
canvas->save();
for (size_t shapeIdx = 0; shapeIdx <= kLast_Shape; shapeIdx++) {
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
if (kShape_Pass != drawingPass) {
canvas->save();
canvas->clipRect(clipRect);
if (kCheckerboard_Pass == drawingPass) {
sk_tool_utils::draw_checkerboard(canvas, 0xffffffff, 0xffc6c3c6,
10);
} else {
SkASSERT(kBackground_Pass == drawingPass);
canvas->drawColor(kBGColor, SkXfermode::kSrc_Mode);
}
canvas->restore();
} else {
this->drawShape(canvas, static_cast<Shape>(shapeIdx), paint, mode);
}
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
canvas->translate(kShapeTypeSpacing, 0);
}
canvas->restore();
canvas->translate(kPaintSpacing, 0);
}
canvas->restore();
canvas->translate(0, kShapeSpacing);
}
canvas->restore();
canvas->translate(kXfermodeTypeSpacing, 0);
}
canvas->restore();
}
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
void onDraw(SkCanvas* canvas) override {
draw_pass(canvas, kCheckerboard_Pass);
Style Change: NULL->nullptr DOCS_PREVIEW= https://skia.org/?cl=1316233002 Review URL: https://codereview.chromium.org/1316233002
2015-08-27 14:41:13 +00:00
canvas->saveLayer(nullptr, nullptr);
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
canvas->translate(kMargin, kMargin);
draw_pass(canvas, kBackground_Pass);
SkPaint titlePaint(fLabelPaint);
titlePaint.setTextSize(9 * titlePaint.getTextSize() / 8);
titlePaint.setFakeBoldText(true);
titlePaint.setTextAlign(SkPaint::kCenter_Align);
canvas->drawText("Porter Duff", sizeof("Porter Duff") - 1,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kLabelSpacing + 4 * kShapeTypeSpacing,
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
kTitleSpacing / 2 + titlePaint.getTextSize() / 3, titlePaint);
canvas->drawText("Advanced", sizeof("Advanced") - 1,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kXfermodeTypeSpacing + kLabelSpacing + 4 * kShapeTypeSpacing,
Today's gm include many differences caused by platform font implementations. This experiment replaces the label used in the aaxfermodes gm with aliased text generated from paths common to all platforms. Since there is no way today to generate all dm output from trybots, this will be checked in to confirm that this strategy provides simpler output across devices. This does not introduce a new public interface; instead, dm uses a extern backdoor to install the SkTypeface::CreateFromName handler. Review URL: https://codereview.chromium.org/1163283002
2015-06-10 16:31:09 +00:00
kTitleSpacing / 2 + titlePaint.getTextSize() / 3, titlePaint);
draw_pass(canvas, kShape_Pass);
canvas->restore();
}
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
void drawModeName(SkCanvas* canvas, SkXfermode::Mode mode) {
const char* modeName = mode <= SkXfermode::kLastMode ? SkXfermode::ModeName(mode)
: "Arithmetic";
fLabelPaint.setTextAlign(SkPaint::kRight_Align);
canvas->drawText(modeName, strlen(modeName), kLabelSpacing - kShapeSize / 4,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
fLabelPaint.getTextSize() / 4, fLabelPaint);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
}
void setupShapePaint(SkCanvas* canvas, GrColor color, SkXfermode::Mode mode, SkPaint* paint) {
paint->setColor(color);
if (mode == SkXfermode::kPlus_Mode) {
// Check for overflow, otherwise we might get confusing AA artifacts.
int maxSum = SkTMax(SkTMax(SkColorGetA(kBGColor) + SkColorGetA(color),
SkColorGetR(kBGColor) + SkColorGetR(color)),
SkTMax(SkColorGetG(kBGColor) + SkColorGetG(color),
SkColorGetB(kBGColor) + SkColorGetB(color)));
if (maxSum > 255) {
SkPaint dimPaint;
dimPaint.setAntiAlias(false);
dimPaint.setXfermode(SkXfermode::Create(SkXfermode::kDstIn_Mode));
if (255 != paint->getAlpha()) {
// Dim the src and dst colors.
dimPaint.setARGB(255 * 255 / maxSum, 0, 0, 0);
paint->setAlpha(255 * paint->getAlpha() / maxSum);
} else {
// Just clear the dst, we need to preserve the paint's opacity.
dimPaint.setARGB(0, 0, 0, 0);
}
canvas->drawRectCoords(-kShapeSpacing/2, -kShapeSpacing/2,
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
kShapeSpacing/2 + 3 * kShapeTypeSpacing,
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
kShapeSpacing/2, dimPaint);
}
}
}
void drawShape(SkCanvas* canvas, Shape shape, const SkPaint& paint, SkXfermode::Mode mode) {
SkPaint shapePaint(paint);
shapePaint.setAntiAlias(kSquare_Shape != shape);
SkAutoTUnref<SkXfermode> xfermode;
if (mode <= SkXfermode::kLastMode) {
xfermode.reset(SkXfermode::Create(mode));
} else {
xfermode.reset(SkArithmeticMode::Create(+1.0f, +0.25f, -0.5f, +0.1f));
}
shapePaint.setXfermode(xfermode);
switch (shape) {
case kSquare_Shape:
canvas->drawRectCoords(-kShapeSize/2, -kShapeSize/2, kShapeSize/2, kShapeSize/2,
shapePaint);
break;
case kDiamond_Shape:
canvas->save();
canvas->rotate(45);
canvas->drawRectCoords(-kShapeSize/2, -kShapeSize/2, kShapeSize/2, kShapeSize/2,
shapePaint);
canvas->restore();
break;
case kOval_Shape:
canvas->save();
canvas->rotate(static_cast<SkScalar>((511 * mode + 257) % 360));
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
canvas->drawPath(fOval, shapePaint);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
canvas->restore();
break;
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
case kConcave_Shape:
canvas->drawPath(fConcave, shapePaint);
break;
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
default:
SkFAIL("Invalid shape.");
}
}
private:
SkPaint fLabelPaint;
Added concave paths to aaxfermodes GM GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1534823004 Review URL: https://codereview.chromium.org/1534823004
2015-12-17 18:58:28 +00:00
SkPath fOval;
SkPath fConcave;
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new AAXfermodesGM; }
static GMRegistry reg(MyFactory);
}
Reference in New Issue Copy Permalink