71d9d84d6c
Allow configs to be supported as FBO attachments for copies/readbacks without being "renderable" elsewhere in Ganesh. The motivation for this is to add support for int textures as srcs but not as dsts (at least initially) but to still be able to read them back. This means we don't pay for a unneeded GPU copy when reading back a GrSurface that is a GrTexture and not a GrRenderTarget. GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4345 Change-Id: I824a73c6b8c1b9634206d76ccf0848d5f9b64441 Reviewed-on: https://skia-review.googlesource.com/4345 Commit-Queue: Brian Salomon <bsalomon@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com>
420 lines
15 KiB
C++
420 lines
15 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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#include "sk_tool_utils.h"
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#if SK_SUPPORT_GPU
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#include "GrContext.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 const U8CPU DEV_PAD = 0xee;
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static SkPMColor get_canvas_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 = 0x0;
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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 3:
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a = 0x00;
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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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}
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return SkPremultiplyARGBInline(a, r, g, b);
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}
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// assumes any premu/.unpremul has been applied
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static uint32_t pack_color_type(SkColorType ct, U8CPU a, U8CPU r, U8CPU g, U8CPU b) {
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uint32_t r32;
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uint8_t* result = reinterpret_cast<uint8_t*>(&r32);
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switch (ct) {
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case kBGRA_8888_SkColorType:
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result[0] = b;
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result[1] = g;
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result[2] = r;
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result[3] = a;
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break;
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case kRGBA_8888_SkColorType:
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result[0] = r;
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result[1] = g;
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result[2] = b;
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result[3] = a;
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break;
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default:
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SkASSERT(0);
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return 0;
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}
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return r32;
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}
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static uint32_t get_bitmap_color(int x, int y, int w, SkColorType ct, SkAlphaType at) {
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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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U8CPU a = 0;
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switch ((x+y) % 5) {
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case 4:
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a = 0xff;
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break;
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case 3:
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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 1:
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a = 0x01;
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break;
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case 0:
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a = 0x00;
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break;
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}
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if (kPremul_SkAlphaType == at) {
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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 pack_color_type(ct, a, r, g , b);
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}
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static void fill_canvas(SkCanvas* canvas) {
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SkBitmap bmp;
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if (bmp.isNull()) {
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bmp.allocN32Pixels(DEV_W, DEV_H);
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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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*bmp.getAddr32(x, y) = get_canvas_color(x, y);
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}
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}
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}
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canvas->save();
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canvas->setMatrix(SkMatrix::I());
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canvas->clipRect(DEV_RECT_S, SkCanvas::kReplace_Op);
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SkPaint paint;
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paint.setBlendMode(SkBlendMode::kSrc);
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canvas->drawBitmap(bmp, 0, 0, &paint);
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canvas->restore();
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}
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/**
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* Lucky for us, alpha is always in the same spot (SK_A32_SHIFT), for both RGBA and BGRA.
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* Thus this routine doesn't need to know the exact colortype
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*/
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static uint32_t premul(uint32_t color) {
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unsigned a = SkGetPackedA32(color);
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// these next three are not necessarily r,g,b in that order, but they are r,g,b in some order.
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unsigned c0 = SkGetPackedR32(color);
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unsigned c1 = SkGetPackedG32(color);
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unsigned c2 = SkGetPackedB32(color);
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c0 = SkMulDiv255Ceiling(c0, a);
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c1 = SkMulDiv255Ceiling(c1, a);
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c2 = SkMulDiv255Ceiling(c2, a);
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return SkPackARGB32NoCheck(a, c0, c1, c2);
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}
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static SkPMColor convert_to_PMColor(SkColorType ct, SkAlphaType at, uint32_t color) {
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if (kUnpremul_SkAlphaType == at) {
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color = premul(color);
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}
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switch (ct) {
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case kRGBA_8888_SkColorType:
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color = SkSwizzle_RGBA_to_PMColor(color);
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break;
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case kBGRA_8888_SkColorType:
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color = SkSwizzle_BGRA_to_PMColor(color);
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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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return color;
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}
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static bool check_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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static bool check_write(skiatest::Reporter* reporter, SkCanvas* canvas, const SkBitmap& bitmap,
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int writeX, int writeY) {
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const SkImageInfo canvasInfo = canvas->imageInfo();
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size_t canvasRowBytes;
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const uint32_t* canvasPixels;
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// Can't use canvas->peekPixels(), as we are trying to look at GPU pixels sometimes as well.
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// At some point this will be unsupported, as we won't allow accessBitmap() to magically call
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// readPixels for the client.
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SkBitmap secretDevBitmap;
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if (!canvas->readPixels(canvasInfo.bounds(), &secretDevBitmap)) {
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return false;
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}
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SkAutoLockPixels alp(secretDevBitmap);
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canvasRowBytes = secretDevBitmap.rowBytes();
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canvasPixels = static_cast<const uint32_t*>(secretDevBitmap.getPixels());
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if (nullptr == canvasPixels) {
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return false;
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}
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if (canvasInfo.width() != DEV_W ||
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canvasInfo.height() != DEV_H ||
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canvasInfo.colorType() != kN32_SkColorType) {
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return false;
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}
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const SkImageInfo bmInfo = bitmap.info();
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SkIRect writeRect = SkIRect::MakeXYWH(writeX, writeY, bitmap.width(), bitmap.height());
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for (int cy = 0; cy < DEV_H; ++cy) {
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for (int cx = 0; cx < DEV_W; ++cx) {
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SkPMColor canvasPixel = canvasPixels[cx];
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if (writeRect.contains(cx, cy)) {
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int bx = cx - writeX;
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int by = cy - writeY;
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uint32_t bmpColor8888 = get_bitmap_color(bx, by, bitmap.width(),
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bmInfo.colorType(), bmInfo.alphaType());
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bool mul = (kUnpremul_SkAlphaType == bmInfo.alphaType());
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SkPMColor bmpPMColor = convert_to_PMColor(bmInfo.colorType(), bmInfo.alphaType(),
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bmpColor8888);
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if (!check_pixel(bmpPMColor, canvasPixel, mul)) {
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ERRORF(reporter, "Expected canvas pixel at %d, %d to be 0x%08x, got 0x%08x. "
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"Write performed premul: %d", cx, cy, bmpPMColor, canvasPixel, mul);
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return false;
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}
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} else {
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SkPMColor testColor = get_canvas_color(cx, cy);
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if (canvasPixel != testColor) {
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ERRORF(reporter, "Canvas pixel outside write rect at %d, %d changed."
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" Should be 0x%08x, got 0x%08x. ", cx, cy, testColor, canvasPixel);
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return false;
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}
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}
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}
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if (cy != DEV_H -1) {
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const char* pad = reinterpret_cast<const char*>(canvasPixels + DEV_W);
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for (size_t px = 0; px < canvasRowBytes - 4 * DEV_W; ++px) {
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bool check;
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REPORTER_ASSERT(reporter, check = (pad[px] == static_cast<char>(DEV_PAD)));
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if (!check) {
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return false;
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}
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}
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}
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canvasPixels += canvasRowBytes/4;
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}
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return true;
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}
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#include "SkMallocPixelRef.h"
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// This is a tricky pattern, because we have to setConfig+rowBytes AND specify
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// a custom pixelRef (which also has to specify its rowBytes), so we have to be
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// sure that the two rowBytes match (and the infos match).
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//
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static bool alloc_row_bytes(SkBitmap* bm, const SkImageInfo& info, size_t rowBytes) {
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if (!bm->setInfo(info, rowBytes)) {
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return false;
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}
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SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, rowBytes, nullptr);
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bm->setPixelRef(pr)->unref();
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return true;
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}
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static void free_pixels(void* pixels, void* ctx) {
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sk_free(pixels);
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}
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static bool setup_bitmap(SkBitmap* bm, SkColorType ct, SkAlphaType at, int w, int h, int tightRB) {
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size_t rowBytes = tightRB ? 0 : 4 * w + 60;
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SkImageInfo info = SkImageInfo::Make(w, h, ct, at);
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if (!alloc_row_bytes(bm, info, rowBytes)) {
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return false;
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}
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SkAutoLockPixels alp(*bm);
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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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*bm->getAddr32(x, y) = get_bitmap_color(x, y, w, ct, at);
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}
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}
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return true;
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}
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static void call_writepixels(SkCanvas* canvas) {
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const SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1);
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SkPMColor pixel = 0;
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canvas->writePixels(info, &pixel, sizeof(SkPMColor), 0, 0);
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}
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DEF_TEST(WritePixelsSurfaceGenID, reporter) {
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const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
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auto surface(SkSurface::MakeRaster(info));
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uint32_t genID1 = surface->generationID();
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call_writepixels(surface->getCanvas());
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uint32_t genID2 = surface->generationID();
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REPORTER_ASSERT(reporter, genID1 != genID2);
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}
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static void test_write_pixels(skiatest::Reporter* reporter, SkSurface* surface) {
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const SkIRect testRects[] = {
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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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SkCanvas& canvas = *surface->getCanvas();
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static const struct {
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SkColorType fColorType;
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SkAlphaType fAlphaType;
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} gSrcConfigs[] = {
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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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};
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for (size_t r = 0; r < SK_ARRAY_COUNT(testRects); ++r) {
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const SkIRect& rect = testRects[r];
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for (int tightBmp = 0; tightBmp < 2; ++tightBmp) {
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for (size_t c = 0; c < SK_ARRAY_COUNT(gSrcConfigs); ++c) {
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const SkColorType ct = gSrcConfigs[c].fColorType;
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const SkAlphaType at = gSrcConfigs[c].fAlphaType;
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fill_canvas(&canvas);
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SkBitmap bmp;
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REPORTER_ASSERT(reporter, setup_bitmap(&bmp, ct, at, rect.width(),
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rect.height(), SkToBool(tightBmp)));
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uint32_t idBefore = surface->generationID();
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// sk_tool_utils::write_pixels(&canvas, bmp, rect.fLeft, rect.fTop, ct, at);
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canvas.writePixels(bmp, rect.fLeft, rect.fTop);
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uint32_t idAfter = surface->generationID();
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REPORTER_ASSERT(reporter, check_write(reporter, &canvas, bmp,
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rect.fLeft, rect.fTop));
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// we should change the genID iff pixels were actually written.
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SkIRect canvasRect = SkIRect::MakeSize(canvas.getDeviceSize());
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SkIRect writeRect = SkIRect::MakeXYWH(rect.fLeft, rect.fTop,
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bmp.width(), bmp.height());
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bool intersects = SkIRect::Intersects(canvasRect, writeRect) ;
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REPORTER_ASSERT(reporter, intersects == (idBefore != idAfter));
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}
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}
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}
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}
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DEF_TEST(WritePixels, reporter) {
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const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
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for (auto& tightRowBytes : { true, false }) {
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const size_t rowBytes = tightRowBytes ? info.minRowBytes() : 4 * DEV_W + 100;
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const size_t size = info.getSafeSize(rowBytes);
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void* pixels = sk_malloc_throw(size);
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// if rowBytes isn't tight then set the padding to a known value
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if (!tightRowBytes) {
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memset(pixels, DEV_PAD, size);
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}
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auto surface(SkSurface::MakeRasterDirectReleaseProc(info, pixels, rowBytes,
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free_pixels, nullptr));
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test_write_pixels(reporter, surface.get());
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}
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}
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#if SK_SUPPORT_GPU
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DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixels_Gpu, reporter, ctxInfo) {
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const SkImageInfo ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
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for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_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_write_pixels(reporter, surface.get());
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}
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}
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#endif
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