0c2997b6d8
Alpha type is not (and never will be) part of pixel config, so the logic around that was unnecessary. (Also, we already sanitize color type and alpha type before making a new device at a higher level). With that out of the way, we can easily supply a full info at the two call-sites that were using the other version. BUG=skia: Change-Id: Iceccdbdebd1062d3e5023620755aabcc86604d2f Reviewed-on: https://skia-review.googlesource.com/6920 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
487 lines
18 KiB
C++
487 lines
18 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkCanvas.h"
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#include "SkColorPriv.h"
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#include "SkMathPriv.h"
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#include "SkSurface.h"
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#include "Test.h"
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#if SK_SUPPORT_GPU
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#include "GrContext.h"
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#include "SkGr.h"
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#endif
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#include <initializer_list>
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static const int DEV_W = 100, DEV_H = 100;
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static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H);
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static const SkRect DEV_RECT_S = SkRect::MakeWH(DEV_W * SK_Scalar1,
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DEV_H * SK_Scalar1);
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static SkPMColor get_src_color(int x, int y) {
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SkASSERT(x >= 0 && x < DEV_W);
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SkASSERT(y >= 0 && y < DEV_H);
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U8CPU r = x;
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U8CPU g = y;
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U8CPU b = 0xc;
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U8CPU a = 0xff;
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switch ((x+y) % 5) {
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case 0:
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a = 0xff;
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break;
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case 1:
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a = 0x80;
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break;
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case 2:
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a = 0xCC;
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break;
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case 4:
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a = 0x01;
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break;
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case 3:
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a = 0x00;
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break;
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}
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return SkPremultiplyARGBInline(a, r, g, b);
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}
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static SkPMColor get_dst_bmp_init_color(int x, int y, int w) {
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int n = y * w + x;
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U8CPU b = n & 0xff;
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U8CPU g = (n >> 8) & 0xff;
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U8CPU r = (n >> 16) & 0xff;
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return SkPackARGB32(0xff, r, g , b);
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}
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static SkPMColor convert_to_pmcolor(SkColorType ct, SkAlphaType at, const uint32_t* addr,
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bool* doUnpremul) {
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*doUnpremul = (kUnpremul_SkAlphaType == at);
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const uint8_t* c = reinterpret_cast<const uint8_t*>(addr);
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U8CPU a,r,g,b;
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switch (ct) {
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case kBGRA_8888_SkColorType:
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b = static_cast<U8CPU>(c[0]);
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g = static_cast<U8CPU>(c[1]);
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r = static_cast<U8CPU>(c[2]);
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a = static_cast<U8CPU>(c[3]);
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break;
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case kRGBA_8888_SkColorType:
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r = static_cast<U8CPU>(c[0]);
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g = static_cast<U8CPU>(c[1]);
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b = static_cast<U8CPU>(c[2]);
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a = static_cast<U8CPU>(c[3]);
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break;
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default:
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SkDEBUGFAIL("Unexpected colortype");
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return 0;
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}
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if (*doUnpremul) {
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r = SkMulDiv255Ceiling(r, a);
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g = SkMulDiv255Ceiling(g, a);
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b = SkMulDiv255Ceiling(b, a);
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}
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return SkPackARGB32(a, r, g, b);
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}
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static SkBitmap make_src_bitmap() {
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static SkBitmap bmp;
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if (bmp.isNull()) {
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bmp.allocN32Pixels(DEV_W, DEV_H);
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intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels());
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for (int y = 0; y < DEV_H; ++y) {
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for (int x = 0; x < DEV_W; ++x) {
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SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel());
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*pixel = get_src_color(x, y);
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}
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}
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}
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return bmp;
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}
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static void fill_src_canvas(SkCanvas* canvas) {
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canvas->save();
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canvas->setMatrix(SkMatrix::I());
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canvas->clipRect(DEV_RECT_S, kReplace_SkClipOp);
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SkPaint paint;
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paint.setBlendMode(SkBlendMode::kSrc);
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canvas->drawBitmap(make_src_bitmap(), 0, 0, &paint);
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canvas->restore();
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}
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#if SK_SUPPORT_GPU
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static void fill_src_texture(GrTexture* texture) {
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SkBitmap bmp = make_src_bitmap();
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bmp.lockPixels();
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texture->writePixels(0, 0, DEV_W, DEV_H, kSkia8888_GrPixelConfig, bmp.getPixels(),
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bmp.rowBytes());
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bmp.unlockPixels();
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}
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#endif
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static void fill_dst_bmp_with_init_data(SkBitmap* bitmap) {
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SkAutoLockPixels alp(*bitmap);
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int w = bitmap->width();
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int h = bitmap->height();
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intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels());
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for (int y = 0; y < h; ++y) {
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for (int x = 0; x < w; ++x) {
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SkPMColor initColor = get_dst_bmp_init_color(x, y, w);
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if (kAlpha_8_SkColorType == bitmap->colorType()) {
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uint8_t* alpha = reinterpret_cast<uint8_t*>(pixels + y * bitmap->rowBytes() + x);
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*alpha = SkGetPackedA32(initColor);
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} else {
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SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bitmap->rowBytes() + x * bitmap->bytesPerPixel());
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*pixel = initColor;
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}
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}
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}
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}
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static bool check_read_pixel(SkPMColor a, SkPMColor b, bool didPremulConversion) {
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if (!didPremulConversion) {
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return a == b;
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}
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int32_t aA = static_cast<int32_t>(SkGetPackedA32(a));
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int32_t aR = static_cast<int32_t>(SkGetPackedR32(a));
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int32_t aG = static_cast<int32_t>(SkGetPackedG32(a));
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int32_t aB = SkGetPackedB32(a);
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int32_t bA = static_cast<int32_t>(SkGetPackedA32(b));
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int32_t bR = static_cast<int32_t>(SkGetPackedR32(b));
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int32_t bG = static_cast<int32_t>(SkGetPackedG32(b));
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int32_t bB = static_cast<int32_t>(SkGetPackedB32(b));
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return aA == bA &&
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SkAbs32(aR - bR) <= 1 &&
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SkAbs32(aG - bG) <= 1 &&
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SkAbs32(aB - bB) <= 1;
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}
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// checks the bitmap contains correct pixels after the readPixels
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// if the bitmap was prefilled with pixels it checks that these weren't
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// overwritten in the area outside the readPixels.
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static bool check_read(skiatest::Reporter* reporter,
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const SkBitmap& bitmap,
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int x, int y,
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bool checkCanvasPixels,
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bool checkBitmapPixels,
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SkColorType ct,
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SkAlphaType at) {
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SkASSERT(ct == bitmap.colorType() && at == bitmap.alphaType());
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SkASSERT(!bitmap.isNull());
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SkASSERT(checkCanvasPixels || checkBitmapPixels);
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int bw = bitmap.width();
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int bh = bitmap.height();
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SkIRect srcRect = SkIRect::MakeXYWH(x, y, bw, bh);
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SkIRect clippedSrcRect = DEV_RECT;
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if (!clippedSrcRect.intersect(srcRect)) {
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clippedSrcRect.setEmpty();
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}
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SkAutoLockPixels alp(bitmap);
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if (kAlpha_8_SkColorType == ct) {
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for (int by = 0; by < bh; ++by) {
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for (int bx = 0; bx < bw; ++bx) {
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int devx = bx + srcRect.fLeft;
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int devy = by + srcRect.fTop;
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const uint8_t* alpha = bitmap.getAddr8(bx, by);
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if (clippedSrcRect.contains(devx, devy)) {
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if (checkCanvasPixels) {
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uint8_t canvasAlpha = SkGetPackedA32(get_src_color(devx, devy));
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if (canvasAlpha != *alpha) {
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ERRORF(reporter, "Expected readback alpha (%d, %d) value 0x%02x, got 0x%02x. ",
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bx, by, canvasAlpha, *alpha);
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return false;
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}
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}
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} else if (checkBitmapPixels) {
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uint32_t origDstAlpha = SkGetPackedA32(get_dst_bmp_init_color(bx, by, bw));
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if (origDstAlpha != *alpha) {
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ERRORF(reporter, "Expected clipped out area of readback to be unchanged. "
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"Expected 0x%02x, got 0x%02x", origDstAlpha, *alpha);
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return false;
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}
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}
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}
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}
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return true;
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}
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for (int by = 0; by < bh; ++by) {
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for (int bx = 0; bx < bw; ++bx) {
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int devx = bx + srcRect.fLeft;
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int devy = by + srcRect.fTop;
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const uint32_t* pixel = bitmap.getAddr32(bx, by);
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if (clippedSrcRect.contains(devx, devy)) {
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if (checkCanvasPixels) {
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SkPMColor canvasPixel = get_src_color(devx, devy);
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bool didPremul;
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SkPMColor pmPixel = convert_to_pmcolor(ct, at, pixel, &didPremul);
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if (!check_read_pixel(pmPixel, canvasPixel, didPremul)) {
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ERRORF(reporter, "Expected readback pixel (%d, %d) value 0x%08x, got 0x%08x. "
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"Readback was unpremul: %d", bx, by, canvasPixel, pmPixel, didPremul);
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return false;
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}
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}
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} else if (checkBitmapPixels) {
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uint32_t origDstPixel = get_dst_bmp_init_color(bx, by, bw);
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if (origDstPixel != *pixel) {
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ERRORF(reporter, "Expected clipped out area of readback to be unchanged. "
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"Expected 0x%08x, got 0x%08x", origDstPixel, *pixel);
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return false;
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}
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}
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}
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}
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return true;
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}
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enum BitmapInit {
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kFirstBitmapInit = 0,
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kNoPixels_BitmapInit = kFirstBitmapInit,
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kTight_BitmapInit,
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kRowBytes_BitmapInit,
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kRowBytesOdd_BitmapInit,
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kLastAligned_BitmapInit = kRowBytes_BitmapInit,
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#if 0 // THIS CAUSES ERRORS ON WINDOWS AND SOME ANDROID DEVICES
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kLast_BitmapInit = kRowBytesOdd_BitmapInit
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#else
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kLast_BitmapInit = kLastAligned_BitmapInit
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#endif
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};
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static BitmapInit nextBMI(BitmapInit bmi) {
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int x = bmi;
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return static_cast<BitmapInit>(++x);
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}
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static void init_bitmap(SkBitmap* bitmap, const SkIRect& rect, BitmapInit init, SkColorType ct,
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SkAlphaType at) {
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SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), ct, at);
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size_t rowBytes = 0;
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bool alloc = true;
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switch (init) {
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case kNoPixels_BitmapInit:
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alloc = false;
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case kTight_BitmapInit:
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break;
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case kRowBytes_BitmapInit:
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rowBytes = SkAlign4((info.width() + 16) * info.bytesPerPixel());
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break;
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case kRowBytesOdd_BitmapInit:
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rowBytes = SkAlign4(info.width() * info.bytesPerPixel()) + 3;
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break;
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default:
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SkASSERT(0);
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break;
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}
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if (alloc) {
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bitmap->allocPixels(info, rowBytes);
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} else {
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bitmap->setInfo(info, rowBytes);
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}
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}
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static const struct {
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SkColorType fColorType;
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SkAlphaType fAlphaType;
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} gReadPixelsConfigs[] = {
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{ kRGBA_8888_SkColorType, kPremul_SkAlphaType },
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{ kRGBA_8888_SkColorType, kUnpremul_SkAlphaType },
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{ kBGRA_8888_SkColorType, kPremul_SkAlphaType },
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{ kBGRA_8888_SkColorType, kUnpremul_SkAlphaType },
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{ kAlpha_8_SkColorType, kPremul_SkAlphaType },
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};
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const SkIRect gReadPixelsTestRects[] = {
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// entire thing
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DEV_RECT,
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// larger on all sides
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SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H + 10),
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// fully contained
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SkIRect::MakeLTRB(DEV_W / 4, DEV_H / 4, 3 * DEV_W / 4, 3 * DEV_H / 4),
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// outside top left
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SkIRect::MakeLTRB(-10, -10, -1, -1),
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// touching top left corner
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SkIRect::MakeLTRB(-10, -10, 0, 0),
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// overlapping top left corner
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SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H / 4),
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// overlapping top left and top right corners
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SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H / 4),
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// touching entire top edge
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SkIRect::MakeLTRB(-10, -10, DEV_W + 10, 0),
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// overlapping top right corner
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SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H / 4),
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// contained in x, overlapping top edge
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SkIRect::MakeLTRB(DEV_W / 4, -10, 3 * DEV_W / 4, DEV_H / 4),
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// outside top right corner
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SkIRect::MakeLTRB(DEV_W + 1, -10, DEV_W + 10, -1),
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// touching top right corner
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SkIRect::MakeLTRB(DEV_W, -10, DEV_W + 10, 0),
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// overlapping top left and bottom left corners
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SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H + 10),
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// touching entire left edge
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SkIRect::MakeLTRB(-10, -10, 0, DEV_H + 10),
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// overlapping bottom left corner
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SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W / 4, DEV_H + 10),
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// contained in y, overlapping left edge
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SkIRect::MakeLTRB(-10, DEV_H / 4, DEV_W / 4, 3 * DEV_H / 4),
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// outside bottom left corner
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SkIRect::MakeLTRB(-10, DEV_H + 1, -1, DEV_H + 10),
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// touching bottom left corner
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SkIRect::MakeLTRB(-10, DEV_H, 0, DEV_H + 10),
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// overlapping bottom left and bottom right corners
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SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10),
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// touching entire left edge
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SkIRect::MakeLTRB(0, DEV_H, DEV_W, DEV_H + 10),
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// overlapping bottom right corner
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SkIRect::MakeLTRB(3 * DEV_W / 4, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10),
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// overlapping top right and bottom right corners
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SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H + 10),
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};
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static void test_readpixels(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface,
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BitmapInit lastBitmapInit) {
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SkCanvas* canvas = surface->getCanvas();
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fill_src_canvas(canvas);
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for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) {
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const SkIRect& srcRect = gReadPixelsTestRects[rect];
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for (BitmapInit bmi = kFirstBitmapInit; bmi <= lastBitmapInit; bmi = nextBMI(bmi)) {
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for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) {
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SkBitmap bmp;
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init_bitmap(&bmp, srcRect, bmi,
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gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
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// if the bitmap has pixels allocated before the readPixels,
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// note that and fill them with pattern
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bool startsWithPixels = !bmp.isNull();
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if (startsWithPixels) {
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fill_dst_bmp_with_init_data(&bmp);
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}
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uint32_t idBefore = surface->generationID();
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bool success = canvas->readPixels(&bmp, srcRect.fLeft, srcRect.fTop);
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uint32_t idAfter = surface->generationID();
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// we expect to succeed when the read isn't fully clipped
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// out.
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bool expectSuccess = SkIRect::Intersects(srcRect, DEV_RECT);
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// determine whether we expected the read to succeed.
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REPORTER_ASSERT(reporter, success == expectSuccess);
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// read pixels should never change the gen id
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REPORTER_ASSERT(reporter, idBefore == idAfter);
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if (success || startsWithPixels) {
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check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop,
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success, startsWithPixels,
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gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
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} else {
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// if we had no pixels beforehand and the readPixels
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// failed then our bitmap should still not have pixels
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REPORTER_ASSERT(reporter, bmp.isNull());
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}
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}
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// check the old webkit version of readPixels that clips the
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// bitmap size
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SkBitmap wkbmp;
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bool success = canvas->readPixels(srcRect, &wkbmp);
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SkIRect clippedRect = DEV_RECT;
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if (clippedRect.intersect(srcRect)) {
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REPORTER_ASSERT(reporter, success);
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REPORTER_ASSERT(reporter, kN32_SkColorType == wkbmp.colorType());
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REPORTER_ASSERT(reporter, kPremul_SkAlphaType == wkbmp.alphaType());
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check_read(reporter, wkbmp, clippedRect.fLeft,
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clippedRect.fTop, true, false,
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kN32_SkColorType, kPremul_SkAlphaType);
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} else {
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REPORTER_ASSERT(reporter, !success);
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}
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}
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}
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}
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DEF_TEST(ReadPixels, reporter) {
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const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
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auto surface(SkSurface::MakeRaster(info));
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// SW readback fails a premul check when reading back to an unaligned rowbytes.
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test_readpixels(reporter, surface, kLastAligned_BitmapInit);
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}
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#if SK_SUPPORT_GPU
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DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Gpu, reporter, ctxInfo) {
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const SkImageInfo ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
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for (auto& origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) {
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sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo,
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ii, 0, origin, nullptr));
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test_readpixels(reporter, surface, kLast_BitmapInit);
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}
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}
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#endif
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#if SK_SUPPORT_GPU
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static void test_readpixels_texture(skiatest::Reporter* reporter, GrTexture* texture) {
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fill_src_texture(texture);
|
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for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) {
|
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const SkIRect& srcRect = gReadPixelsTestRects[rect];
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for (BitmapInit bmi = kFirstBitmapInit; bmi <= kLast_BitmapInit; bmi = nextBMI(bmi)) {
|
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for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) {
|
|
SkBitmap bmp;
|
|
init_bitmap(&bmp, srcRect, bmi,
|
|
gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
|
|
|
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// if the bitmap has pixels allocated before the readPixels,
|
|
// note that and fill them with pattern
|
|
bool startsWithPixels = !bmp.isNull();
|
|
// Try doing the read directly from a non-renderable texture
|
|
if (startsWithPixels) {
|
|
fill_dst_bmp_with_init_data(&bmp);
|
|
GrPixelConfig dstConfig =
|
|
SkImageInfo2GrPixelConfig(bmp.info(), *texture->getContext()->caps());
|
|
uint32_t flags = 0;
|
|
if (gReadPixelsConfigs[c].fAlphaType == kUnpremul_SkAlphaType) {
|
|
flags = GrContext::kUnpremul_PixelOpsFlag;
|
|
}
|
|
bmp.lockPixels();
|
|
bool success = texture->readPixels(srcRect.fLeft, srcRect.fTop, bmp.width(),
|
|
bmp.height(), dstConfig, bmp.getPixels(),
|
|
bmp.rowBytes(), flags);
|
|
bmp.unlockPixels();
|
|
check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop,
|
|
success, true,
|
|
gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Texture, reporter, ctxInfo) {
|
|
// On the GPU we will also try reading back from a non-renderable texture.
|
|
for (auto origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) {
|
|
for (auto flags : {kNone_GrSurfaceFlags, kRenderTarget_GrSurfaceFlag}) {
|
|
GrSurfaceDesc desc;
|
|
desc.fFlags = flags;
|
|
desc.fWidth = DEV_W;
|
|
desc.fHeight = DEV_H;
|
|
desc.fConfig = kSkia8888_GrPixelConfig;
|
|
desc.fOrigin = origin;
|
|
sk_sp<GrTexture> texture(ctxInfo.grContext()->textureProvider()->createTexture(desc,
|
|
SkBudgeted::kNo));
|
|
test_readpixels_texture(reporter, texture.get());
|
|
}
|
|
}
|
|
}
|
|
#endif
|