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skia2/gm/runtimeintrinsics.cpp
Mike Reed ac9f0c9e27 Bitmap.asImage() 
... and lots and lots of IWYU

Change-Id: Ie5157dcdd2e6d29b95c71b39153278ab48ef4eb3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/346778
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2020-12-23 15:54:57 +00:00

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/*
* Copyright 2019 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkData.h"
#include "include/core/SkFont.h"
#include "include/core/SkPaint.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkImageFilters.h"
#include "include/effects/SkRuntimeEffect.h"
#include "include/utils/SkRandom.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
static constexpr int kBoxSize = 100;
static constexpr int kPadding = 5;
static constexpr int kLabelHeight = 15;
/*
Test cases are inserted into the middle of this shader. The pasted expression is expected to
produce a single float. It can reference:
'x' : float in [xMin, xMax]
'p' : float2 in [xMin, xMax] Lerps from (xMax, xMin) to (xMin, xMax)
(helpful for intrinsics with a mix of scalar/vector params)
'v1' : float2(1)
'v2' : float2(2)
*/
static SkString make_unary_sksl_1d(const char* fn) {
return SkStringPrintf(
"uniform float xScale; uniform float xBias;"
"uniform float yScale; uniform float yBias;"
"half4 main(float2 p) {"
" float2 v1 = float2(1);"
" float2 v2 = float2(2);"
" p = float2(p.x, 1 - p.x) * xScale + xBias;"
" float x = p.x;"
" float y = %s * yScale + yBias;"
" return y.xxx1;"
"}",
fn);
}
// Draws one row of boxes, then advances the canvas translation vertically
static void plot(SkCanvas* canvas,
const char* fn,
float xMin,
float xMax,
float yMin,
float yMax,
const char* label = nullptr) {
canvas->save();
SkFont font(ToolUtils::create_portable_typeface());
SkPaint p(SkColors::kBlack);
SkRect bounds;
if (!label) {
label = fn;
}
font.measureText(label, strlen(label), SkTextEncoding::kUTF8, &bounds);
canvas->drawSimpleText(label, strlen(label), SkTextEncoding::kUTF8,
(kBoxSize - bounds.width()) * 0.5f,
(kLabelHeight + bounds.height()) * 0.5f, font, p);
canvas->translate(0, kLabelHeight);
const float xScale = xMax - xMin,
xBias = xMin,
yScale = 1.0f / (yMax - yMin),
yBias = -yMin / (yMax - yMin);
{
auto [effect, error] = SkRuntimeEffect::Make(make_unary_sksl_1d(fn));
if (!effect) {
SkDebugf("Error: %s\n", error.c_str());
return;
}
SkRuntimeShaderBuilder builder(effect);
builder.uniform("xScale") = xScale;
builder.uniform("xBias") = xBias;
builder.uniform("yScale") = yScale;
builder.uniform("yBias") = yBias;
SkPaint paint;
paint.setShader(builder.makeShader(nullptr, false));
SkImageInfo info = SkImageInfo::MakeN32Premul({ kBoxSize, kBoxSize});
auto surface = canvas->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRaster(info);
}
surface->getCanvas()->clear(SK_ColorWHITE);
surface->getCanvas()->scale(kBoxSize, kBoxSize);
surface->getCanvas()->drawRect({0, 0, 1, 1}, paint);
SkBitmap bitmap;
bitmap.allocPixels(info);
surface->readPixels(bitmap, 0, 0);
canvas->drawBitmap(bitmap, 0, 0);
// Plot...
SkPaint plotPaint({ 0.0f, 0.5f, 0.0f, 1.0f });
SkPoint pts[kBoxSize];
for (int x = 0; x < kBoxSize; ++x) {
SkColor c = bitmap.getColor(x, 0);
SkScalar y = (1 - (SkColorGetR(c) / 255.0f)) * kBoxSize;
pts[x].set(x + 0.5f, y);
}
canvas->drawPoints(SkCanvas::kPoints_PointMode, kBoxSize, pts, plotPaint);
}
canvas->restore();
}
static void col(SkCanvas* canvas) {
canvas->translate(kBoxSize + kPadding, 0);
}
static void row(SkCanvas* canvas) {
canvas->restore();
canvas->translate(0, kBoxSize + kPadding + kLabelHeight);
canvas->save();
}
static constexpr int columns_to_width(int columns) {
return (kPadding + kBoxSize) * columns + kPadding;
}
static constexpr int rows_to_height(int rows) {
return (kPadding + kLabelHeight + kBoxSize) * rows + kPadding;
}
// The OpenGL ES Shading Language, Version 1.00, Section 8.1
DEF_SIMPLE_GM_BG(
runtime_intrinsics_trig, canvas, columns_to_width(3), rows_to_height(5), SK_ColorWHITE) {
const float kPI = SK_FloatPI, kTwoPI = 2 * SK_FloatPI, kPIOverTwo = SK_FloatPI / 2;
canvas->translate(kPadding, kPadding);
canvas->save();
plot(canvas, "radians(x)", 0.0f, 360.0f, 0.0f, kTwoPI); col(canvas);
plot(canvas, "degrees(x)", 0.0f, kTwoPI, 0.0f, 360.0f); row(canvas);
plot(canvas, "sin(x)", 0.0f, kTwoPI, -1.0f, 1.0f); col(canvas);
plot(canvas, "cos(x)", 0.0f, kTwoPI, -1.0f, 1.0f); col(canvas);
plot(canvas, "tan(x)", 0.0f, kPI, -10.0f, 10.0f); row(canvas);
plot(canvas, "asin(x)", -1.0f, 1.0f, -kPIOverTwo, kPIOverTwo); col(canvas);
plot(canvas, "acos(x)", -1.0f, 1.0f, 0.0f, kPI); col(canvas);
plot(canvas, "atan(x)", -10.0f, 10.0f, -kPIOverTwo, kPIOverTwo); row(canvas);
plot(canvas, "atan(0.1, x)", -1.0f, 1.0f, 0.0f, kPI); col(canvas);
plot(canvas, "atan(-0.1, x)", -1.0f, 1.0f, -kPI, 0.0f); row(canvas);
plot(canvas, "atan(x, 0.1)", -1.0f, 1.0f, -kPIOverTwo, kPIOverTwo); col(canvas);
plot(canvas, "atan(x, -0.1)", -1.0f, 1.0f, -kPI, kPI); row(canvas);
}
// The OpenGL ES Shading Language, Version 1.00, Section 8.2
DEF_SIMPLE_GM_BG(runtime_intrinsics_exponential,
canvas,
columns_to_width(2),
rows_to_height(5),
SK_ColorWHITE) {
canvas->translate(kPadding, kPadding);
canvas->save();
plot(canvas, "pow(x, 3)", 0.0f, 8.0f, 0.0f, 500.0f); col(canvas);
plot(canvas, "pow(x, -3)", 0.0f, 4.0f, 0.0f, 10.0f); row(canvas);
plot(canvas, "pow(0.9, x)", -10.0f, 10.0f, 0.0f, 3.0f); col(canvas);
plot(canvas, "pow(1.1, x)", -10.0f, 10.0f, 0.0f, 3.0f); row(canvas);
plot(canvas, "exp(x)", -1.0f, 7.0f, 0.0f, 1000.0f); col(canvas);
plot(canvas, "log(x)", 0.0f, 2.5f, -4.0f, 1.0f); row(canvas);
plot(canvas, "exp2(x)", -1.0f, 7.0f, 0.0f, 130.0f); col(canvas);
plot(canvas, "log2(x)", 0.0f, 4.0f, -4.0f, 2.0f); row(canvas);
plot(canvas, "sqrt(x)", 0.0f, 25.0f, 0.0f, 5.0f); col(canvas);
plot(canvas, "inversesqrt(x)", 0.0f, 25.0f, 0.2f, 4.0f); row(canvas);
}
// The OpenGL ES Shading Language, Version 1.00, Section 8.3
DEF_SIMPLE_GM_BG(runtime_intrinsics_common,
canvas,
columns_to_width(6),
rows_to_height(6),
SK_ColorWHITE) {
canvas->translate(kPadding, kPadding);
canvas->save();
plot(canvas, "abs(x)", -10.0f, 10.0f, 0.0f, 10.0f); col(canvas);
plot(canvas, "sign(x)", -1.0f, 1.0f, -1.5f, 1.5f); row(canvas);
plot(canvas, "floor(x)", -3.0f, 3.0f, -4.0f, 4.0f); col(canvas);
plot(canvas, "ceil(x)", -3.0f, 3.0f, -4.0f, 4.0f); col(canvas);
plot(canvas, "fract(x)", -3.0f, 3.0f, 0.0f, 1.0f); col(canvas);
plot(canvas, "mod(x, 2)", -4.0f, 4.0f, -2.0f, 2.0f, "mod(scalar)"); col(canvas);
plot(canvas, "mod(p, -2).x", -4.0f, 4.0f, -2.0f, 2.0f, "mod(mixed)" ); col(canvas);
plot(canvas, "mod(p, v2).x", -4.0f, 4.0f, -2.0f, 2.0f, "mod(vector)"); row(canvas);
plot(canvas, "min(x, 1)", 0.0f, 2.0f, 0.0f, 2.0f, "min(scalar)"); col(canvas);
plot(canvas, "min(p, 1).x", 0.0f, 2.0f, 0.0f, 2.0f, "min(mixed)" ); col(canvas);
plot(canvas, "min(p, v1).x", 0.0f, 2.0f, 0.0f, 2.0f, "min(vector)"); col(canvas);
plot(canvas, "max(x, 1)", 0.0f, 2.0f, 0.0f, 2.0f, "max(scalar)"); col(canvas);
plot(canvas, "max(p, 1).x", 0.0f, 2.0f, 0.0f, 2.0f, "max(mixed)" ); col(canvas);
plot(canvas, "max(p, v1).x", 0.0f, 2.0f, 0.0f, 2.0f, "max(vector)"); row(canvas);
plot(canvas, "clamp(x, 1, 2)", 0.0f, 3.0f, 0.0f, 3.0f, "clamp(scalar)"); col(canvas);
plot(canvas, "clamp(p, 1, 2).x", 0.0f, 3.0f, 0.0f, 3.0f, "clamp(mixed)" ); col(canvas);
plot(canvas, "clamp(p, v1, v2).x", 0.0f, 3.0f, 0.0f, 3.0f, "clamp(vector)"); col(canvas);
plot(canvas, "saturate(x)", -1.0f, 2.0f, -0.5f, 1.5f); row(canvas);
plot(canvas, "mix(1, 2, x)", -1.0f, 2.0f, 0.0f, 3.0f, "mix(scalar)"); col(canvas);
plot(canvas, "mix(v1, v2, x).x", -1.0f, 2.0f, 0.0f, 3.0f, "mix(mixed)" ); col(canvas);
plot(canvas, "mix(v1, v2, p).x", -1.0f, 2.0f, 0.0f, 3.0f, "mix(vector)"); row(canvas);
plot(canvas, "step(1, x)", 0.0f, 2.0f, -0.5f, 1.5f, "step(scalar)"); col(canvas);
plot(canvas, "step(1, p).x", 0.0f, 2.0f, -0.5f, 1.5f, "step(mixed)" ); col(canvas);
plot(canvas, "step(v1, p).x", 0.0f, 2.0f, -0.5f, 1.5f, "step(vector)"); col(canvas);
plot(canvas, "smoothstep(1, 2, x)", 0.5f, 2.5f, -0.5f, 1.5f, "smooth(scalar)"); col(canvas);
plot(canvas, "smoothstep(1, 2, p).x", 0.5f, 2.5f, -0.5f, 1.5f, "smooth(mixed)" ); col(canvas);
plot(canvas, "smoothstep(v1, v2, p).x", 0.5f, 2.5f, -0.5f, 1.5f, "smooth(vector)"); row(canvas);
}
// The OpenGL ES Shading Language, Version 1.00, Section 8.4
DEF_SIMPLE_GM_BG(runtime_intrinsics_geometric,
canvas,
columns_to_width(4),
rows_to_height(5),
SK_ColorWHITE) {
canvas->translate(kPadding, kPadding);
canvas->save();
plot(canvas, "length(x)", -1.0f, 1.0f, -0.5f, 1.5f); col(canvas);
plot(canvas, "length(p)", 0.0f, 1.0f, 0.5f, 1.5f); col(canvas);
plot(canvas, "distance(x, 0)", -1.0f, 1.0f, -0.5f, 1.5f); col(canvas);
plot(canvas, "distance(p, v1)", 0.0f, 1.0f, 0.5f, 1.5f); row(canvas);
plot(canvas, "dot(x, 2)", -1.0f, 1.0f, -2.5f, 2.5f); col(canvas);
plot(canvas, "dot(p, p.y1)", -1.0f, 1.0f, -2.5f, 0.5f); row(canvas);
plot(canvas, "cross(p.xy1, p.y1x).x", 0.0f, 1.0f, -1.0f, 1.0f); col(canvas);
plot(canvas, "cross(p.xy1, p.y1x).y", 0.0f, 1.0f, -1.0f, 1.0f); col(canvas);
plot(canvas, "cross(p.xy1, p.y1x).z", 0.0f, 1.0f, -1.0f, 1.0f); row(canvas);
plot(canvas, "normalize(x)", -2.0f, 2.0f, -1.5f, 1.5f); col(canvas);
plot(canvas, "normalize(p).x", 0.0f, 2.0f, 0.0f, 1.0f); col(canvas);
plot(canvas, "normalize(p).y", 0.0f, 2.0f, 0.0f, 1.0f); col(canvas);
plot(canvas, "faceforward(v1, p.x0, v1.x0).x", -1.0f, 1.0f, -1.5f, 1.5f, "faceforward"); row(canvas);
plot(canvas, "reflect(p.x1, v1.0x).x", -1.0f, 1.0f, -1.0f, 1.0f, "reflect(horiz)"); col(canvas);
plot(canvas, "reflect(p.x1, normalize(v1)).y", -1.0f, 1.0f, -1.0f, 1.0f, "reflect(diag)" ); col(canvas);
plot(canvas, "refract(v1.x0, v1.0x, x).x", 0.0f, 1.0f, -1.0f, 1.0f, "refract().x"); col(canvas);
plot(canvas, "refract(v1.x0, v1.0x, x).y", 0.0f, 1.0f, -1.0f, 1.0f, "refract().y"); row(canvas);
}
/*
Specialized shader for testing relational operators.
*/
static SkString make_bvec_sksl(const char* fn) {
return SkStringPrintf(
"half4 main(float2 p) {"
" float2 v1 = float2(1.0);"
" p.x = p.x < 0.33 ? 0.0 : (p.x < 0.66 ? 1.0 : 2.0);"
" p.y = p.y < 0.33 ? 0.0 : (p.y < 0.66 ? 1.0 : 2.0);"
" 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 = nullptr) {
canvas->save();
SkFont font(ToolUtils::create_portable_typeface());
SkPaint p(SkColors::kBlack);
SkRect bounds;
if (!label) {
label = fn;
}
font.measureText(label, strlen(label), SkTextEncoding::kUTF8, &bounds);
canvas->drawSimpleText(label, strlen(label), SkTextEncoding::kUTF8,
(kBoxSize - bounds.width()) * 0.5f,
(kLabelHeight + bounds.height()) * 0.5f, font, p);
canvas->translate(0, kLabelHeight);
{
auto [effect, error] = SkRuntimeEffect::Make(make_bvec_sksl(fn));
if (!effect) {
SkDebugf("Error: %s\n", error.c_str());
return;
}
SkRuntimeShaderBuilder builder(effect);
SkPaint paint;
paint.setShader(builder.makeShader(nullptr, false));
SkImageInfo info = SkImageInfo::MakeN32Premul({ kBoxSize, kBoxSize});
auto surface = canvas->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRaster(info);
}
surface->getCanvas()->clear(SK_ColorWHITE);
surface->getCanvas()->scale(kBoxSize, kBoxSize);
surface->getCanvas()->drawRect({0, 0, 1, 1}, paint);
SkBitmap bitmap;
bitmap.allocPixels(info);
surface->readPixels(bitmap, 0, 0);
canvas->drawBitmap(bitmap, 0, 0);
}
canvas->restore();
}
// The OpenGL ES Shading Language, Version 1.00, Section 8.6
DEF_SIMPLE_GM_BG(runtime_intrinsics_relational,
canvas,
columns_to_width(2),
rows_to_height(6),
SK_ColorWHITE) {
canvas->translate(kPadding, kPadding);
canvas->save();
// TODO: ivec versions of these. (Not declared in sksl_public.sksl yet).
plot_bvec(canvas, "lessThan(p, v1)", "lessThan"); col(canvas);
plot_bvec(canvas, "lessThanEqual(p, v1)", "lessThanEqual"); row(canvas);
plot_bvec(canvas, "greaterThan(p, v1)", "greaterThan"); col(canvas);
plot_bvec(canvas, "greaterThanEqual(p, v1)", "greaterThanEqual"); row(canvas);
plot_bvec(canvas, "equal(p, v1)", "equal"); col(canvas);
plot_bvec(canvas, "notEqual(p, v1)", "notEqual"); row(canvas);
plot_bvec(canvas, "equal(lessThanEqual(p, v1), greaterThanEqual(p, v1))",
"equal(bvec)"); col(canvas);
plot_bvec(canvas, "notEqual(lessThanEqual(p, v1), greaterThanEqual(p, v1))",
"notequal(bvec)"); row(canvas);
plot_bvec(canvas, "not(notEqual(p, v1))", "not(notEqual)"); col(canvas);
plot_bvec(canvas, "not(equal(p, v1))", "not(equal)"); row(canvas);
plot_bvec(canvas, "bool2(any(equal(p, v1)))", "any(equal)"); col(canvas);
plot_bvec(canvas, "bool2(all(equal(p, v1)))", "all(equal)"); row(canvas);
}
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