7ad3aa20c9
ES and ANGLE don't support framebuffer blits from single to multisample. On these platforms we now perform a draw instead. Bug: skia:12069 Bug: angleproject:6030 Change-Id: Ida0a5e9b556c4715fa63cb98aba185e64c72b28e Reviewed-on: https://skia-review.googlesource.com/c/skia/+/415767 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Chris Dalton <csmartdalton@google.com>
92 lines
3.7 KiB
C++
92 lines
3.7 KiB
C++
/*
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* Copyright 2021 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 "tests/Test.h"
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#include "include/core/SkVertices.h"
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#include "src/core/SkBlendModePriv.h"
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#include "src/core/SkMatrixProvider.h"
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#include "src/core/SkSurfacePriv.h"
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#include "src/gpu/GrStyle.h"
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#include "src/gpu/GrSurfaceDrawContext.h"
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static SkSurfaceProps kDMSAAProps(kDMSAA_SkSurfacePropsPrivateFlag, kUnknown_SkPixelGeometry);
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constexpr static SkPMColor4f kTransYellow = {.5f,.5f,.0f,.5f};
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constexpr static SkPMColor4f kTransCyan = {.0f,.5f,.5f,.5f};
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constexpr static int w=10, h=10;
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static void draw_paint_with_dmsaa(GrSurfaceDrawContext* sdc, const SkPMColor4f& color,
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SkBlendMode blendMode) {
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// drawVertices should always trigger dmsaa, but draw something non-rectangular just to be 100%
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// certain.
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static const SkPoint kVertices[3] = {{-.5f,-.5f}, {w * 2.1f, 0}, {0, h * 2.1f}};
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SkVertices::Builder builder(SkVertices::kTriangles_VertexMode, 3, 0, 0);
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memcpy(builder.positions(), kVertices, sizeof(kVertices));
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auto vertices = builder.detach();
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GrPaint paint;
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paint.setColor4f(color);
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paint.setXPFactory(SkBlendMode_AsXPFactory(blendMode));
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sdc->drawVertices(nullptr, std::move(paint), SkSimpleMatrixProvider(SkMatrix::I()), vertices);
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}
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static bool fuzzy_equals(const float a[4], const SkPMColor4f& b) {
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constexpr static float kTolerance = 2.5f / 256;
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for (int i = 0; i < 4; ++i) {
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if (!SkScalarNearlyEqual(a[i], b.vec()[i], kTolerance)) {
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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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static void check_sdc_color(skiatest::Reporter* reporter, GrSurfaceDrawContext* sdc,
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GrDirectContext* ctx, const SkPMColor4f& color) {
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auto info = SkImageInfo::Make(w, h, kRGBA_F32_SkColorType, kPremul_SkAlphaType);
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GrPixmap pixmap = GrPixmap::Allocate(info);
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sdc->readPixels(ctx, pixmap, {0, 0});
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auto pix = static_cast<const float*>(pixmap.addr());
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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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if (!fuzzy_equals(pix, color)) {
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ERRORF(reporter, "SDC color mismatch.\n"
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"Got [%0.3f, %0.3f, %0.3f, %0.3f]\n"
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"Expected [%0.3f, %0.3f, %0.3f, %0.3f]",
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pix[0], pix[1], pix[2], pix[3], color.fR, color.fG, color.fB, color.fA);
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return;
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}
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pix += 4;
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}
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}
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}
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DEF_GPUTEST_FOR_CONTEXTS(DMSAA_preserve_contents,
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&sk_gpu_test::GrContextFactory::IsRenderingContext, reporter, ctxInfo,
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nullptr) {
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auto ctx = ctxInfo.directContext();
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auto sdc = GrSurfaceDrawContext::Make(ctx, GrColorType::kRGBA_8888, nullptr,
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SkBackingFit::kApprox, {w, h}, kDMSAAProps);
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// Initialize the texture and dmsaa attachment with transparent.
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draw_paint_with_dmsaa(sdc.get(), SK_PMColor4fTRANSPARENT, SkBlendMode::kSrc);
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check_sdc_color(reporter, sdc.get(), ctx, SK_PMColor4fTRANSPARENT);
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// Clear the main texture to yellow.
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sdc->clear(kTransYellow);
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// Close the opsTask by doing a readback.
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check_sdc_color(reporter, sdc.get(), ctx, kTransYellow);
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// Now the DMSAA attachment is clear and the texture is yellow. Blend cyan into the DMSAA
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// attachment. This will fail if the yellow from the main texture doesn't get copied into the
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// DMSAA attachment before the renderPass.
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draw_paint_with_dmsaa(sdc.get(), kTransCyan, SkBlendMode::kSrcOver);
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SkPMColor4f dstColor = SkBlendMode_Apply(SkBlendMode::kSrcOver, kTransCyan, kTransYellow);
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check_sdc_color(reporter, sdc.get(), ctx, dstColor);
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}
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