3b2fac6899
This reverts commit 72bd9e8664.
Bug: skia:10913
Bug: skia:11133
Change-Id: Id822569166c7c2d53c3af5685550ae00c0dcfe01
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/349058
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
512 lines
19 KiB
C++
512 lines
19 KiB
C++
/*
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* Copyright 2019 Google LLC
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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 "gm/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkData.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkSurface.h"
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#include "include/effects/SkGradientShader.h"
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#include "include/effects/SkImageFilters.h"
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#include "include/effects/SkRuntimeEffect.h"
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#include "include/utils/SkRandom.h"
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#include "tools/Resources.h"
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#include "tools/ToolUtils.h"
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static constexpr int kBoxSize = 100;
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static constexpr int kPadding = 5;
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static constexpr int kLabelHeight = 15;
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static void next_column(SkCanvas* canvas) {
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canvas->translate(kBoxSize + kPadding, 0);
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}
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static void next_row(SkCanvas* canvas) {
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canvas->restore();
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canvas->translate(0, kBoxSize + kPadding + kLabelHeight);
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canvas->save();
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}
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static constexpr int columns_to_width(int columns) {
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return (kPadding + kBoxSize) * columns + kPadding;
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}
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static constexpr int rows_to_height(int rows) {
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return (kPadding + kLabelHeight + kBoxSize) * rows + kPadding;
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}
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static void draw_label(SkCanvas* canvas, const char* label) {
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SkFont font(ToolUtils::create_portable_typeface());
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SkPaint p(SkColors::kBlack);
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SkRect bounds;
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font.measureText(label, strlen(label), SkTextEncoding::kUTF8, &bounds);
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canvas->drawSimpleText(label, strlen(label), SkTextEncoding::kUTF8,
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(kBoxSize - bounds.width()) * 0.5f,
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(kLabelHeight + bounds.height()) * 0.5f, font, p);
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canvas->translate(0, kLabelHeight);
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}
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static SkBitmap draw_shader(SkCanvas* canvas, sk_sp<SkShader> shader) {
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SkPaint paint;
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paint.setShader(std::move(shader));
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SkImageInfo info = SkImageInfo::MakeN32Premul({kBoxSize, kBoxSize});
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auto surface = canvas->makeSurface(info);
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if (!surface) {
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surface = SkSurface::MakeRaster(info);
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}
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surface->getCanvas()->clear(SK_ColorWHITE);
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surface->getCanvas()->scale(kBoxSize, kBoxSize);
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surface->getCanvas()->drawRect({0, 0, 1, 1}, paint);
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SkBitmap bitmap;
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bitmap.allocPixels(info);
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surface->readPixels(bitmap, 0, 0);
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canvas->drawBitmap(bitmap, 0, 0);
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return bitmap;
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}
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/*
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Test cases are inserted into the middle of this shader. The pasted expression is expected to
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produce a single float. It can reference:
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'x' : float in [xMin, xMax]
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'p' : float2 in [xMin, xMax] Lerps from (xMax, xMin) to (xMin, xMax)
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(helpful for intrinsics with a mix of scalar/vector params)
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'v1' : float2(1)
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'v2' : float2(2)
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*/
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static SkString make_unary_sksl_1d(const char* fn) {
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return SkStringPrintf(
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"uniform float xScale; uniform float xBias;"
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"uniform float yScale; uniform float yBias;"
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"half4 main(float2 p) {"
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" float2 v1 = float2(1);"
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" float2 v2 = float2(2);"
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" p = float2(p.x, 1 - p.x) * xScale + xBias;"
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" float x = p.x;"
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" float y = %s * yScale + yBias;"
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" return y.xxx1;"
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"}",
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fn);
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}
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// Draws one row of boxes, then advances the canvas translation vertically
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static void plot(SkCanvas* canvas,
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const char* fn,
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float xMin,
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float xMax,
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float yMin,
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float yMax,
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const char* label = nullptr) {
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canvas->save();
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draw_label(canvas, label ? label : fn);
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auto [effect, error] = SkRuntimeEffect::Make(make_unary_sksl_1d(fn));
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if (!effect) {
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SkDebugf("Error: %s\n", error.c_str());
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return;
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}
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SkRuntimeShaderBuilder builder(effect);
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builder.uniform("xScale") = xMax - xMin;
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builder.uniform("xBias") = xMin;
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builder.uniform("yScale") = 1.0f / (yMax - yMin);
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builder.uniform("yBias") = -yMin / (yMax - yMin);
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SkBitmap bitmap =
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draw_shader(canvas, builder.makeShader(/*localMatrix=*/nullptr, /*isOpaque=*/false));
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// Plot...
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SkPaint plotPaint({ 0.0f, 0.5f, 0.0f, 1.0f });
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SkPoint pts[kBoxSize];
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for (int x = 0; x < kBoxSize; ++x) {
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SkColor c = bitmap.getColor(x, 0);
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SkScalar y = (1 - (SkColorGetR(c) / 255.0f)) * kBoxSize;
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pts[x].set(x + 0.5f, y);
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}
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canvas->drawPoints(SkCanvas::kPoints_PointMode, kBoxSize, pts, plotPaint);
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canvas->restore();
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next_column(canvas);
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}
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// The OpenGL ES Shading Language, Version 1.00, Section 8.1
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DEF_SIMPLE_GM(runtime_intrinsics_trig,
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canvas,
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columns_to_width(3),
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rows_to_height(5)) {
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const float kPI = SK_FloatPI, kTwoPI = 2 * SK_FloatPI, kPIOverTwo = SK_FloatPI / 2;
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canvas->translate(kPadding, kPadding);
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canvas->save();
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plot(canvas, "radians(x)", 0.0f, 360.0f, 0.0f, kTwoPI);
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plot(canvas, "degrees(x)", 0.0f, kTwoPI, 0.0f, 360.0f);
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next_row(canvas);
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plot(canvas, "sin(x)", 0.0f, kTwoPI, -1.0f, 1.0f);
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plot(canvas, "cos(x)", 0.0f, kTwoPI, -1.0f, 1.0f);
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plot(canvas, "tan(x)", 0.0f, kPI, -10.0f, 10.0f);
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next_row(canvas);
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plot(canvas, "asin(x)", -1.0f, 1.0f, -kPIOverTwo, kPIOverTwo);
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plot(canvas, "acos(x)", -1.0f, 1.0f, 0.0f, kPI);
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plot(canvas, "atan(x)", -10.0f, 10.0f, -kPIOverTwo, kPIOverTwo);
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next_row(canvas);
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plot(canvas, "atan(0.1, x)", -1.0f, 1.0f, 0.0f, kPI);
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plot(canvas, "atan(-0.1, x)", -1.0f, 1.0f, -kPI, 0.0f);
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next_row(canvas);
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plot(canvas, "atan(x, 0.1)", -1.0f, 1.0f, -kPIOverTwo, kPIOverTwo);
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plot(canvas, "atan(x, -0.1)", -1.0f, 1.0f, -kPI, kPI);
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next_row(canvas);
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}
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// The OpenGL ES Shading Language, Version 1.00, Section 8.2
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DEF_SIMPLE_GM(runtime_intrinsics_exponential,
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canvas,
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columns_to_width(2),
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rows_to_height(5)) {
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canvas->translate(kPadding, kPadding);
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canvas->save();
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plot(canvas, "pow(x, 3)", 0.0f, 8.0f, 0.0f, 500.0f);
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plot(canvas, "pow(x, -3)", 0.0f, 4.0f, 0.0f, 10.0f);
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next_row(canvas);
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plot(canvas, "pow(0.9, x)", -10.0f, 10.0f, 0.0f, 3.0f);
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plot(canvas, "pow(1.1, x)", -10.0f, 10.0f, 0.0f, 3.0f);
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next_row(canvas);
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plot(canvas, "exp(x)", -1.0f, 7.0f, 0.0f, 1000.0f);
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plot(canvas, "log(x)", 0.0f, 2.5f, -4.0f, 1.0f);
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next_row(canvas);
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plot(canvas, "exp2(x)", -1.0f, 7.0f, 0.0f, 130.0f);
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plot(canvas, "log2(x)", 0.0f, 4.0f, -4.0f, 2.0f);
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next_row(canvas);
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plot(canvas, "sqrt(x)", 0.0f, 25.0f, 0.0f, 5.0f);
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plot(canvas, "inversesqrt(x)", 0.0f, 25.0f, 0.2f, 4.0f);
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next_row(canvas);
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}
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// The OpenGL ES Shading Language, Version 1.00, Section 8.3
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DEF_SIMPLE_GM(runtime_intrinsics_common,
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canvas,
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columns_to_width(6),
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rows_to_height(6)) {
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canvas->translate(kPadding, kPadding);
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canvas->save();
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plot(canvas, "abs(x)", -10.0f, 10.0f, 0.0f, 10.0f);
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plot(canvas, "sign(x)", -1.0f, 1.0f, -1.5f, 1.5f);
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next_row(canvas);
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plot(canvas, "floor(x)", -3.0f, 3.0f, -4.0f, 4.0f);
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plot(canvas, "ceil(x)", -3.0f, 3.0f, -4.0f, 4.0f);
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plot(canvas, "fract(x)", -3.0f, 3.0f, 0.0f, 1.0f);
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plot(canvas, "mod(x, 2)", -4.0f, 4.0f, -2.0f, 2.0f, "mod(scalar)");
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plot(canvas, "mod(p, -2).x", -4.0f, 4.0f, -2.0f, 2.0f, "mod(mixed)" );
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plot(canvas, "mod(p, v2).x", -4.0f, 4.0f, -2.0f, 2.0f, "mod(vector)");
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next_row(canvas);
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plot(canvas, "min(x, 1)", 0.0f, 2.0f, 0.0f, 2.0f, "min(scalar)");
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plot(canvas, "min(p, 1).x", 0.0f, 2.0f, 0.0f, 2.0f, "min(mixed)" );
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plot(canvas, "min(p, v1).x", 0.0f, 2.0f, 0.0f, 2.0f, "min(vector)");
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plot(canvas, "max(x, 1)", 0.0f, 2.0f, 0.0f, 2.0f, "max(scalar)");
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plot(canvas, "max(p, 1).x", 0.0f, 2.0f, 0.0f, 2.0f, "max(mixed)" );
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plot(canvas, "max(p, v1).x", 0.0f, 2.0f, 0.0f, 2.0f, "max(vector)");
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next_row(canvas);
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plot(canvas, "clamp(x, 1, 2)", 0.0f, 3.0f, 0.0f, 3.0f, "clamp(scalar)");
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plot(canvas, "clamp(p, 1, 2).x", 0.0f, 3.0f, 0.0f, 3.0f, "clamp(mixed)" );
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plot(canvas, "clamp(p, v1, v2).x", 0.0f, 3.0f, 0.0f, 3.0f, "clamp(vector)");
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plot(canvas, "saturate(x)", -1.0f, 2.0f, -0.5f, 1.5f);
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next_row(canvas);
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plot(canvas, "mix(1, 2, x)", -1.0f, 2.0f, 0.0f, 3.0f, "mix(scalar)");
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plot(canvas, "mix(v1, v2, x).x", -1.0f, 2.0f, 0.0f, 3.0f, "mix(mixed)" );
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plot(canvas, "mix(v1, v2, p).x", -1.0f, 2.0f, 0.0f, 3.0f, "mix(vector)");
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next_row(canvas);
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plot(canvas, "step(1, x)", 0.0f, 2.0f, -0.5f, 1.5f, "step(scalar)");
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plot(canvas, "step(1, p).x", 0.0f, 2.0f, -0.5f, 1.5f, "step(mixed)" );
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plot(canvas, "step(v1, p).x", 0.0f, 2.0f, -0.5f, 1.5f, "step(vector)");
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plot(canvas, "smoothstep(1, 2, x)", 0.5f, 2.5f, -0.5f, 1.5f, "smooth(scalar)");
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plot(canvas, "smoothstep(1, 2, p).x", 0.5f, 2.5f, -0.5f, 1.5f, "smooth(mixed)" );
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plot(canvas, "smoothstep(v1, v2, p).x", 0.5f, 2.5f, -0.5f, 1.5f, "smooth(vector)");
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next_row(canvas);
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}
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// The OpenGL ES Shading Language, Version 1.00, Section 8.4
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DEF_SIMPLE_GM(runtime_intrinsics_geometric,
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canvas,
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columns_to_width(4),
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rows_to_height(5)) {
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canvas->translate(kPadding, kPadding);
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canvas->save();
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plot(canvas, "length(x)", -1.0f, 1.0f, -0.5f, 1.5f);
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plot(canvas, "length(p)", 0.0f, 1.0f, 0.5f, 1.5f);
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plot(canvas, "distance(x, 0)", -1.0f, 1.0f, -0.5f, 1.5f);
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plot(canvas, "distance(p, v1)", 0.0f, 1.0f, 0.5f, 1.5f);
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next_row(canvas);
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plot(canvas, "dot(x, 2)", -1.0f, 1.0f, -2.5f, 2.5f);
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plot(canvas, "dot(p, p.y1)", -1.0f, 1.0f, -2.5f, 0.5f);
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next_row(canvas);
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plot(canvas, "cross(p.xy1, p.y1x).x", 0.0f, 1.0f, -1.0f, 1.0f);
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plot(canvas, "cross(p.xy1, p.y1x).y", 0.0f, 1.0f, -1.0f, 1.0f);
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plot(canvas, "cross(p.xy1, p.y1x).z", 0.0f, 1.0f, -1.0f, 1.0f);
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next_row(canvas);
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plot(canvas, "normalize(x)", -2.0f, 2.0f, -1.5f, 1.5f);
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plot(canvas, "normalize(p).x", 0.0f, 2.0f, 0.0f, 1.0f);
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plot(canvas, "normalize(p).y", 0.0f, 2.0f, 0.0f, 1.0f);
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plot(canvas, "faceforward(v1, p.x0, v1.x0).x", -1.0f, 1.0f, -1.5f, 1.5f, "faceforward");
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next_row(canvas);
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plot(canvas, "reflect(p.x1, v1.0x).x", -1.0f, 1.0f, -1.0f, 1.0f, "reflect(horiz)");
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plot(canvas, "reflect(p.x1, normalize(v1)).y", -1.0f, 1.0f, -1.0f, 1.0f, "reflect(diag)" );
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plot(canvas, "refract(v1.x0, v1.0x, x).x", 0.0f, 1.0f, -1.0f, 1.0f, "refract().x");
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plot(canvas, "refract(v1.x0, v1.0x, x).y", 0.0f, 1.0f, -1.0f, 1.0f, "refract().y");
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next_row(canvas);
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}
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#define SKSL_MATRIX_SELECTORS \
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"inline float2 sel2(float x) {" \
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" return float2(" \
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" x < 0.5 ? 1 : 0," \
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" x >= 0.5 ? 1 : 0);" \
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"}" \
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"inline float3 sel3(float x) {" \
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" return float3(" \
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" x < 0.33 ? 1 : 0," \
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" x >= 0.33 && x < 0.66 ? 1 : 0," \
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" x >= 0.66 ? 1 : 0);" \
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"}" \
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"inline float4 sel4(float x) {" \
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" return float4(" \
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" x < 0.25 ? 1 : 0," \
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" x >= 0.25 && x < 0.5 ? 1 : 0," \
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" x >= 0.5 && x < 0.75 ? 1 : 0," \
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" x >= 0.75 ? 1 : 0);" \
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"}"
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// Shader for testing matrixCompMult intrinsic
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static SkString make_matrix_comp_mult_sksl(int dim) {
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return SkStringPrintf(
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"uniform float%dx%d m1;" // dim, dim
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"uniform float%dx%d m2;" // dim, dim
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SKSL_MATRIX_SELECTORS
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"half4 main(float2 p) {"
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" float%d colSel = sel%d(p.x);" // dim, dim
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" float%d rowSel = sel%d(p.y);" // dim, dim
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" float%d col = matrixCompMult(m1, m2) * colSel;" // dim
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" float v = dot(col, rowSel);"
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" return v.xxx1;"
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"}", dim, dim, dim, dim, dim, dim, dim, dim, dim);
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}
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template <int N>
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static void plot_matrix_comp_mult(SkCanvas* canvas,
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std::array<float, N*N> mtx1,
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std::array<float, N*N> mtx2,
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const char* label) {
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canvas->save();
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draw_label(canvas, label);
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auto [effect, error] = SkRuntimeEffect::Make(make_matrix_comp_mult_sksl(N));
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if (!effect) {
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SkDebugf("Error: %s\n", error.c_str());
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return;
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}
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SkRuntimeShaderBuilder builder(effect);
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builder.uniform("m1") = mtx1;
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builder.uniform("m2") = mtx2;
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draw_shader(canvas, builder.makeShader(/*localMatrix=*/nullptr, /*isOpaque=*/false));
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canvas->restore();
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next_column(canvas);
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}
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// Shader for testing inverse() intrinsic
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static SkString make_matrix_inverse_sksl(int dim) {
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return SkStringPrintf(
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"uniform float scale; uniform float bias;"
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"uniform float%dx%d m;" // dim, dim
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SKSL_MATRIX_SELECTORS
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"half4 main(float2 p) {"
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" float%d colSel = sel%d(p.x);" // dim, dim
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" float%d rowSel = sel%d(p.y);" // dim, dim
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" float%d col = inverse(m) * colSel;" // dim
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" float v = dot(col, rowSel) * scale + bias;"
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" return v.xxx1;"
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"}", dim, dim, dim, dim, dim, dim, dim);
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}
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template <int N>
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static void plot_matrix_inverse(SkCanvas* canvas, std::array<float, N*N> mtx, const char* label) {
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canvas->save();
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draw_label(canvas, label);
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auto [effect, error] = SkRuntimeEffect::Make(make_matrix_inverse_sksl(N));
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if (!effect) {
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SkDebugf("Error: %s\n", error.c_str());
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return;
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}
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SkRuntimeShaderBuilder builder(effect);
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builder.uniform("scale") = 0.5f;
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builder.uniform("bias") = 0.5f;
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builder.uniform("m") = mtx;
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draw_shader(canvas, builder.makeShader(/*localMatrix=*/nullptr, /*isOpaque=*/false));
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canvas->restore();
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next_column(canvas);
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}
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// The OpenGL ES Shading Language, Version 1.00, Section 8.5
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DEF_SIMPLE_GM(runtime_intrinsics_matrix,
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canvas,
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columns_to_width(3),
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rows_to_height(2)) {
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canvas->translate(kPadding, kPadding);
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canvas->save();
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// Random pairs of matrices where the elements of matrixCompMult(m1, m2) lie in [0, 1]
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plot_matrix_comp_mult<2>(canvas,
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{1.00f, 0.0f, 2.0f, 0.5f},
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{0.75f, 2.0f, 0.2f, 1.2f},
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"compMult(2x2)");
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plot_matrix_comp_mult<3>(canvas,
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{1.00f, 0.0f, 2.0f, 0.5f, -1.0f, -2.0f, -0.5f, 4.00f, 0.25f},
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{0.75f, 2.0f, 0.2f, 1.2f, -0.8f, -0.1f, -1.8f, 0.25f, 2.00f},
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"compMult(3x3)");
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plot_matrix_comp_mult<4>(canvas,
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{1.00f, 0.0f, 2.0f, 0.5f, -1.0f, -2.0f, -0.5f, 4.00f, 0.25f, 0.05f,
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10.00f, -0.66f, -1.0f, -0.5f, 0.5f, 0.66f},
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{0.75f, 2.0f, 0.2f, 1.2f, -0.8f, -0.1f, -1.8f, 0.25f, 2.00f, 2.00f,
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0.03f, -1.00f, -1.0f, -0.5f, 1.7f, 0.66f},
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"compMult(4x4)");
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next_row(canvas);
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|
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// Random, invertible matrices where the elements of inverse(m) lie in [-1, 1]
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plot_matrix_inverse<2>(canvas,
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{ 1.20f, 0.68f,
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-0.27f, -1.55f},
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"inverse(2x2)");
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|
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plot_matrix_inverse<3>(canvas,
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{-1.13f, -2.96f, -0.14f,
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1.45f, -1.88f, -1.02f,
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-2.54f, -2.58f, -1.17f},
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"inverse(3x3)");
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|
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plot_matrix_inverse<4>(canvas,
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{-1.51f, -3.95f, -0.19f, 1.93f,
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-2.51f, -1.35f, -3.39f, -3.45f,
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-1.56f, 1.61f, -0.22f, -1.08f,
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-2.81f, -2.14f, -0.09f, 3.00f},
|
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"inverse(4x4)");
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next_row(canvas);
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|
}
|
|
|
|
/*
|
|
Specialized shader for testing relational operators.
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|
*/
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|
static SkString make_bvec_sksl(const char* fn) {
|
|
// We use negative floats, to ensure that the integer variants are working with the correct
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|
// interpretation of the data.
|
|
return SkStringPrintf(
|
|
"half4 main(float2 p) {"
|
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" float2 v1 = float2(-2.0);"
|
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" p.x = p.x < 0.33 ? -3.0 : (p.x < 0.66 ? -2.0 : -1.0);"
|
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" p.y = p.y < 0.33 ? -3.0 : (p.y < 0.66 ? -2.0 : -1.0);"
|
|
" bool2 cmp = %s;"
|
|
" return half4(cmp.x ? 1.0 : 0.0, cmp.y ? 1.0 : 0.0, 0, 1);"
|
|
"}",
|
|
fn);
|
|
}
|
|
|
|
static void plot_bvec(SkCanvas* canvas, const char* fn, const char* label) {
|
|
canvas->save();
|
|
|
|
draw_label(canvas, label);
|
|
|
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auto [effect, error] = SkRuntimeEffect::Make(make_bvec_sksl(fn));
|
|
if (!effect) {
|
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SkDebugf("Error: %s\n", error.c_str());
|
|
return;
|
|
}
|
|
|
|
draw_shader(canvas,
|
|
effect->makeShader(/*uniforms=*/nullptr, /*children=*/nullptr, /*childCount=*/0,
|
|
/*localMatrix=*/nullptr, /*isOpaque=*/false));
|
|
|
|
canvas->restore();
|
|
next_column(canvas);
|
|
}
|
|
|
|
// The OpenGL ES Shading Language, Version 1.00, Section 8.6
|
|
DEF_SIMPLE_GM(runtime_intrinsics_relational,
|
|
canvas,
|
|
columns_to_width(4),
|
|
rows_to_height(6)) {
|
|
canvas->translate(kPadding, kPadding);
|
|
canvas->save();
|
|
|
|
plot_bvec(canvas, "lessThan(p, v1)", "lessThan");
|
|
plot_bvec(canvas, "lessThan(int2(p), int2(v1))", "lessThan(int)");
|
|
plot_bvec(canvas, "lessThanEqual(p, v1)", "lessThanEqual");
|
|
plot_bvec(canvas, "lessThanEqual(int2(p), int2(v1))", "lessThanEqual(int)");
|
|
next_row(canvas);
|
|
|
|
plot_bvec(canvas, "greaterThan(p, v1)", "greaterThan");
|
|
plot_bvec(canvas, "greaterThan(int2(p), int2(v1))", "greaterThan(int)");
|
|
plot_bvec(canvas, "greaterThanEqual(p, v1)", "greaterThanEqual");
|
|
plot_bvec(canvas, "greaterThanEqual(int2(p), int2(v1))", "greaterThanEqual(int)");
|
|
next_row(canvas);
|
|
|
|
plot_bvec(canvas, "equal(p, v1)", "equal");
|
|
plot_bvec(canvas, "equal(int2(p), int2(v1))", "equal(int)");
|
|
plot_bvec(canvas, "notEqual(p, v1)", "notEqual");
|
|
plot_bvec(canvas, "notEqual(int2(p), int2(v1))", "notEqual(int)");
|
|
next_row(canvas);
|
|
|
|
plot_bvec(canvas, "equal( lessThanEqual(p, v1), greaterThanEqual(p, v1))", "equal(bvec)");
|
|
plot_bvec(canvas, "notEqual(lessThanEqual(p, v1), greaterThanEqual(p, v1))", "notequal(bvec)");
|
|
next_row(canvas);
|
|
|
|
plot_bvec(canvas, "not(notEqual(p, v1))", "not(notEqual)");
|
|
plot_bvec(canvas, "not(equal(p, v1))", "not(equal)");
|
|
next_row(canvas);
|
|
|
|
plot_bvec(canvas, "bool2(any(equal(p, v1)))", "any(equal)");
|
|
plot_bvec(canvas, "bool2(all(equal(p, v1)))", "all(equal)");
|
|
next_row(canvas);
|
|
}
|