| /* |
| * Copyright 2021 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/SkCanvas.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkRect.h" |
| #include "src/base/SkFloatBits.h" |
| |
| // Bad quads dumped from SkiaRenderer in crbug.com/1178833. These should all draw as really thin |
| // lines. |
| DEF_SIMPLE_GM(crbug_1177833, canvas, 400, 400) { |
| canvas->clear(SK_ColorBLACK); |
| canvas->translate(-700, -700); |
| // This quad had two issues. The inset collapsed the inner 2D projected quad to a point but |
| // didn't enable enough degrees of freedom to adjust the 4 3D points to project to that point. |
| // Also, the outset produced a 2D projected point far away from the original quad but the |
| // shader was not checking the geometric subset and so pixels far away from the projection of |
| // the quad would have positive coverage. |
| { |
| canvas->save(); |
| canvas->concat(SkMatrix::MakeAll(SkBits2Float(0xbf79250e), SkBits2Float(0x3e9da860), SkBits2Float(0x44914c8a), |
| SkBits2Float(0xbf982962), SkBits2Float(0xbf280002), SkBits2Float(0x44c3116e), |
| SkBits2Float(0xba9bfe62), SkBits2Float(0x39d10455), SkBits2Float(0x3fc9b377))); |
| SkRect rect = {SkBits2Float(0x00000000), |
| SkBits2Float(0x00000000), |
| SkBits2Float(0x40a00000), |
| SkBits2Float(0x43560000)}; |
| SkPoint clip[4] = {{SkBits2Float(0x409fff57), SkBits2Float(0x40c86a18)}, |
| {SkBits2Float(0x409fff57), SkBits2Float(0x4314dc8c)}, |
| {SkBits2Float(0x407f6b0d), SkBits2Float(0x43157fff)}, |
| {SkBits2Float(0x4040859c), SkBits2Float(0x43140374)}}; |
| SkCanvas::QuadAAFlags aaFlags = static_cast<SkCanvas::QuadAAFlags>(0x00000002); |
| SkColor4f color = {SkBits2Float(0x3f6eeef0), |
| SkBits2Float(0x3f6eeef0), |
| SkBits2Float(0x3f6eeef0), |
| SkBits2Float(0x3f800000)}; |
| SkBlendMode mode = static_cast<SkBlendMode>(0x00000003); |
| canvas->experimental_DrawEdgeAAQuad(rect, clip, aaFlags, color, mode); |
| canvas->restore(); |
| } |
| // This quad also exposed the inset collapse to a point without enough degrees of freedom issue. |
| canvas->save(); |
| canvas->translate(-300, 0); |
| { |
| canvas->save(); |
| canvas->concat(SkMatrix::MakeAll(SkBits2Float(0x3f54dd8a), SkBits2Float(0xbf9096a4), SkBits2Float(0x447eae34), |
| SkBits2Float(0x3f3f6905), SkBits2Float(0xbe5208ba), SkBits2Float(0x4418118b), |
| SkBits2Float(0x3aa134a1), SkBits2Float(0xb93ef249), SkBits2Float(0x3f580bd4))); |
| SkRect rect = {SkBits2Float(0x00000000), |
| SkBits2Float(0x00000000), |
| SkBits2Float(0x40a00000), |
| SkBits2Float(0x43560000)}; |
| SkPoint clip[4] = {{SkBits2Float(0x40a0000e), SkBits2Float(0x40c86b5a)}, |
| {SkBits2Float(0x40a0001e), SkBits2Float(0x4314dd5f)}, |
| {SkBits2Float(0x407f76eb), SkBits2Float(0x431580c2)}, |
| {SkBits2Float(0x404092e7), SkBits2Float(0x43140445)}}; |
| SkCanvas::QuadAAFlags aaFlags = static_cast<SkCanvas::QuadAAFlags>(0x00000002); |
| SkColor4f color = {SkBits2Float(0x3f6eeef0), |
| SkBits2Float(0x3f6eeef0), |
| SkBits2Float(0x3f6eeef0), |
| SkBits2Float(0x3f800000)}; |
| SkBlendMode mode = static_cast<SkBlendMode>(0x00000003); |
| canvas->experimental_DrawEdgeAAQuad(rect, clip, aaFlags, color, mode); |
| canvas->restore(); |
| } |
| canvas->restore(); |
| // This quad exposed a similar issue to the point issue above, but when collapsing to a |
| // triangle. When a 2D quad edge collapsed from insetting we'd replace it with a point off of |
| // its adjacent edges. We need to ensure the code that moves the 3D point that projects to |
| // the 2D point has 2 degrees of freedom so it can find the correct 3D point. |
| { |
| canvas->save(); |
| canvas->concat(SkMatrix::MakeAll(SkBits2Float(0x3f54b255), SkBits2Float(0x3eb5a94d), SkBits2Float(0x443d7419), |
| SkBits2Float(0x3f885d66), SkBits2Float(0x3f5a6b9c), SkBits2Float(0x443c7334), |
| SkBits2Float(0x3aa95ea5), SkBits2Float(0xb8a1391e), SkBits2Float(0x3f84dde5))); |
| SkRect rect = {SkBits2Float(0x00000000), |
| SkBits2Float(0x00000000), |
| SkBits2Float(0x40a00000), |
| SkBits2Float(0x43100000)}; |
| SkPoint clip[4] = {{SkBits2Float(0x405a654c), SkBits2Float(0x42e8c790)}, |
| {SkBits2Float(0x3728c61b), SkBits2Float(0x42e7df31)}, |
| {SkBits2Float(0xb678ecc5), SkBits2Float(0x412db4e0)}, |
| {SkBits2Float(0x4024b2ad), SkBits2Float(0x413ab3ed)}}; |
| SkCanvas::QuadAAFlags aaFlags = static_cast<SkCanvas::QuadAAFlags>(0x00000004); |
| SkColor4f color = {SkBits2Float(0x3f800000), |
| SkBits2Float(0x3f800000), |
| SkBits2Float(0x3f800000), |
| SkBits2Float(0x3f800000)}; |
| SkBlendMode mode = static_cast<SkBlendMode>(0x00000003); |
| canvas->experimental_DrawEdgeAAQuad(rect, clip, aaFlags, color, mode); |
| canvas->restore(); |
| } |
| } |
| |