Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
Mike Reed | 63227ca | 2018-01-30 10:12:22 -0500 | [diff] [blame] | 8 | #include "SkCanvas.h" |
| 9 | #include "SkSurface.h" |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 10 | #include "SkVertices.h" |
Mike Reed | 63227ca | 2018-01-30 10:12:22 -0500 | [diff] [blame] | 11 | #include "sk_pixel_iter.h" |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 12 | #include "Test.h" |
| 13 | |
| 14 | static bool equal(const SkVertices* v0, const SkVertices* v1) { |
| 15 | if (v0->mode() != v1->mode()) { |
| 16 | return false; |
| 17 | } |
| 18 | if (v0->vertexCount() != v1->vertexCount()) { |
| 19 | return false; |
| 20 | } |
| 21 | if (v0->indexCount() != v1->indexCount()) { |
| 22 | return false; |
| 23 | } |
| 24 | |
| 25 | if (!!v0->texCoords() != !!v1->texCoords()) { |
| 26 | return false; |
| 27 | } |
| 28 | if (!!v0->colors() != !!v1->colors()) { |
| 29 | return false; |
| 30 | } |
| 31 | |
| 32 | for (int i = 0; i < v0->vertexCount(); ++i) { |
| 33 | if (v0->positions()[i] != v1->positions()[i]) { |
| 34 | return false; |
| 35 | } |
| 36 | if (v0->texCoords()) { |
| 37 | if (v0->texCoords()[i] != v1->texCoords()[i]) { |
| 38 | return false; |
| 39 | } |
| 40 | } |
| 41 | if (v0->colors()) { |
| 42 | if (v0->colors()[i] != v1->colors()[i]) { |
| 43 | return false; |
| 44 | } |
| 45 | } |
| 46 | } |
| 47 | for (int i = 0; i < v0->indexCount(); ++i) { |
| 48 | if (v0->indices()[i] != v1->indices()[i]) { |
| 49 | return false; |
| 50 | } |
| 51 | } |
| 52 | return true; |
| 53 | } |
| 54 | |
| 55 | DEF_TEST(Vertices, reporter) { |
Mike Reed | 6ff6af9 | 2017-04-05 17:05:16 -0400 | [diff] [blame] | 56 | int vCount = 5; |
| 57 | int iCount = 9; // odd value exercises padding logic in encode() |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 58 | |
Mike Reed | aa9e332 | 2017-03-16 14:38:48 -0400 | [diff] [blame] | 59 | const uint32_t texFlags[] = { 0, SkVertices::kHasTexCoords_BuilderFlag }; |
| 60 | const uint32_t colFlags[] = { 0, SkVertices::kHasColors_BuilderFlag }; |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 61 | for (auto texF : texFlags) { |
| 62 | for (auto colF : colFlags) { |
| 63 | uint32_t flags = texF | colF; |
| 64 | |
Mike Reed | 887cdf1 | 2017-04-03 11:11:09 -0400 | [diff] [blame] | 65 | SkVertices::Builder builder(SkVertices::kTriangles_VertexMode, vCount, iCount, flags); |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 66 | |
| 67 | for (int i = 0; i < vCount; ++i) { |
| 68 | float x = (float)i; |
| 69 | builder.positions()[i].set(x, 1); |
| 70 | if (builder.texCoords()) { |
| 71 | builder.texCoords()[i].set(x, 2); |
| 72 | } |
| 73 | if (builder.colors()) { |
| 74 | builder.colors()[i] = SkColorSetARGB(0xFF, i, 0x80, 0); |
| 75 | } |
| 76 | } |
| 77 | for (int i = 0; i < builder.indexCount(); ++i) { |
| 78 | builder.indices()[i] = i % vCount; |
| 79 | } |
| 80 | |
| 81 | sk_sp<SkVertices> v0 = builder.detach(); |
| 82 | sk_sp<SkData> data = v0->encode(); |
| 83 | sk_sp<SkVertices> v1 = SkVertices::Decode(data->data(), data->size()); |
| 84 | |
Mike Reed | 9a8065d | 2017-03-14 21:05:17 -0400 | [diff] [blame] | 85 | REPORTER_ASSERT(reporter, v0->uniqueID() != 0); |
| 86 | REPORTER_ASSERT(reporter, v1->uniqueID() != 0); |
| 87 | REPORTER_ASSERT(reporter, v0->uniqueID() != v1->uniqueID()); |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 88 | REPORTER_ASSERT(reporter, equal(v0.get(), v1.get())); |
| 89 | } |
| 90 | } |
Brian Salomon | cccafe8 | 2018-04-28 16:13:08 -0400 | [diff] [blame] | 91 | { |
| 92 | // This has the maximum number of vertices to be rewritten as indexed triangles without |
| 93 | // overflowing a 16bit index. |
Hal Canary | e1bc7de | 2018-06-13 15:01:39 -0400 | [diff] [blame] | 94 | SkVertices::Builder builder(SkVertices::kTriangleFan_VertexMode, UINT16_MAX + 1, 0, |
Brian Salomon | cccafe8 | 2018-04-28 16:13:08 -0400 | [diff] [blame] | 95 | SkVertices::kHasColors_BuilderFlag); |
| 96 | REPORTER_ASSERT(reporter, builder.isValid()); |
| 97 | } |
| 98 | { |
| 99 | // This has too many to be rewritten. |
Hal Canary | e1bc7de | 2018-06-13 15:01:39 -0400 | [diff] [blame] | 100 | SkVertices::Builder builder(SkVertices::kTriangleFan_VertexMode, UINT16_MAX + 2, 0, |
Brian Salomon | cccafe8 | 2018-04-28 16:13:08 -0400 | [diff] [blame] | 101 | SkVertices::kHasColors_BuilderFlag); |
| 102 | REPORTER_ASSERT(reporter, !builder.isValid()); |
| 103 | } |
| 104 | { |
| 105 | // Only two vertices - can't be rewritten. |
| 106 | SkVertices::Builder builder(SkVertices::kTriangleFan_VertexMode, 2, 0, |
| 107 | SkVertices::kHasColors_BuilderFlag); |
| 108 | REPORTER_ASSERT(reporter, !builder.isValid()); |
| 109 | } |
| 110 | { |
| 111 | // Minimum number of indices to be rewritten. |
| 112 | SkVertices::Builder builder(SkVertices::kTriangleFan_VertexMode, 10, 3, |
| 113 | SkVertices::kHasColors_BuilderFlag); |
| 114 | REPORTER_ASSERT(reporter, builder.isValid()); |
| 115 | } |
| 116 | { |
| 117 | // Too few indices to be rewritten. |
| 118 | SkVertices::Builder builder(SkVertices::kTriangleFan_VertexMode, 10, 2, |
| 119 | SkVertices::kHasColors_BuilderFlag); |
| 120 | REPORTER_ASSERT(reporter, !builder.isValid()); |
| 121 | } |
Mike Reed | bdce9c2 | 2017-03-14 14:10:54 -0400 | [diff] [blame] | 122 | } |
Mike Reed | 63227ca | 2018-01-30 10:12:22 -0500 | [diff] [blame] | 123 | |
| 124 | static void fill_triangle(SkCanvas* canvas, const SkPoint pts[], SkColor c) { |
| 125 | SkColor colors[] = { c, c, c }; |
| 126 | auto verts = SkVertices::MakeCopy(SkVertices::kTriangles_VertexMode, 3, pts, nullptr, colors); |
| 127 | canvas->drawVertices(verts, SkBlendMode::kSrc, SkPaint()); |
| 128 | } |
| 129 | |
| 130 | DEF_TEST(Vertices_clipping, reporter) { |
| 131 | // A very large triangle has to be geometrically clipped (since its "fast" clipping is |
| 132 | // normally done in after building SkFixed coordinates). Check that we handle this. |
| 133 | // (and don't assert). |
| 134 | auto surf = SkSurface::MakeRasterN32Premul(3, 3); |
| 135 | |
| 136 | SkPoint pts[] = { { -10, 1 }, { -10, 2 }, { 1e9f, 1.5f } }; |
| 137 | fill_triangle(surf->getCanvas(), pts, SK_ColorBLACK); |
| 138 | |
| 139 | sk_tool_utils::PixelIter iter(surf.get()); |
| 140 | SkIPoint loc; |
| 141 | while (void* addr = iter.next(&loc)) { |
| 142 | SkPMColor c = *(SkPMColor*)addr; |
| 143 | if (loc.fY == 1) { |
| 144 | REPORTER_ASSERT(reporter, c == 0xFF000000); |
| 145 | } else { |
| 146 | REPORTER_ASSERT(reporter, c == 0); |
| 147 | } |
| 148 | } |
| 149 | } |