63227ca63b
originally found by fuzzer. Bug: skia: Change-Id: I45007a619f13936153c0db8a60b3631a2c9db20c Reviewed-on: https://skia-review.googlesource.com/101741 Reviewed-by: Cary Clark <caryclark@google.com> Commit-Queue: Mike Reed <reed@google.com>
119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/*
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* Copyright 2017 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 "SkSurface.h"
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#include "SkVertices.h"
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#include "sk_pixel_iter.h"
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#include "Test.h"
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static bool equal(const SkVertices* v0, const SkVertices* v1) {
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if (v0->mode() != v1->mode()) {
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return false;
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}
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if (v0->vertexCount() != v1->vertexCount()) {
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return false;
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}
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if (v0->indexCount() != v1->indexCount()) {
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return false;
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}
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if (!!v0->texCoords() != !!v1->texCoords()) {
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return false;
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}
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if (!!v0->colors() != !!v1->colors()) {
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return false;
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}
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for (int i = 0; i < v0->vertexCount(); ++i) {
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if (v0->positions()[i] != v1->positions()[i]) {
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return false;
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}
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if (v0->texCoords()) {
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if (v0->texCoords()[i] != v1->texCoords()[i]) {
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return false;
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}
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}
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if (v0->colors()) {
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if (v0->colors()[i] != v1->colors()[i]) {
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return false;
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}
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}
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}
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for (int i = 0; i < v0->indexCount(); ++i) {
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if (v0->indices()[i] != v1->indices()[i]) {
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return false;
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}
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}
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return true;
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}
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DEF_TEST(Vertices, reporter) {
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int vCount = 5;
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int iCount = 9; // odd value exercises padding logic in encode()
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const uint32_t texFlags[] = { 0, SkVertices::kHasTexCoords_BuilderFlag };
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const uint32_t colFlags[] = { 0, SkVertices::kHasColors_BuilderFlag };
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for (auto texF : texFlags) {
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for (auto colF : colFlags) {
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uint32_t flags = texF | colF;
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SkVertices::Builder builder(SkVertices::kTriangles_VertexMode, vCount, iCount, flags);
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for (int i = 0; i < vCount; ++i) {
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float x = (float)i;
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builder.positions()[i].set(x, 1);
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if (builder.texCoords()) {
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builder.texCoords()[i].set(x, 2);
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}
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if (builder.colors()) {
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builder.colors()[i] = SkColorSetARGB(0xFF, i, 0x80, 0);
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}
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}
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for (int i = 0; i < builder.indexCount(); ++i) {
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builder.indices()[i] = i % vCount;
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}
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sk_sp<SkVertices> v0 = builder.detach();
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sk_sp<SkData> data = v0->encode();
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sk_sp<SkVertices> v1 = SkVertices::Decode(data->data(), data->size());
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REPORTER_ASSERT(reporter, v0->uniqueID() != 0);
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REPORTER_ASSERT(reporter, v1->uniqueID() != 0);
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REPORTER_ASSERT(reporter, v0->uniqueID() != v1->uniqueID());
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REPORTER_ASSERT(reporter, equal(v0.get(), v1.get()));
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}
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}
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}
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static void fill_triangle(SkCanvas* canvas, const SkPoint pts[], SkColor c) {
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SkColor colors[] = { c, c, c };
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auto verts = SkVertices::MakeCopy(SkVertices::kTriangles_VertexMode, 3, pts, nullptr, colors);
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canvas->drawVertices(verts, SkBlendMode::kSrc, SkPaint());
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}
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DEF_TEST(Vertices_clipping, reporter) {
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// A very large triangle has to be geometrically clipped (since its "fast" clipping is
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// normally done in after building SkFixed coordinates). Check that we handle this.
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// (and don't assert).
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auto surf = SkSurface::MakeRasterN32Premul(3, 3);
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SkPoint pts[] = { { -10, 1 }, { -10, 2 }, { 1e9f, 1.5f } };
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fill_triangle(surf->getCanvas(), pts, SK_ColorBLACK);
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sk_tool_utils::PixelIter iter(surf.get());
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SkIPoint loc;
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while (void* addr = iter.next(&loc)) {
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SkPMColor c = *(SkPMColor*)addr;
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if (loc.fY == 1) {
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REPORTER_ASSERT(reporter, c == 0xFF000000);
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} else {
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REPORTER_ASSERT(reporter, c == 0);
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}
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}
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}
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