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Respect kRectsMustMatchForMSAASrc_BlitFramebufferFlag in dst setup

Browse Source 
Crurently, when preparing a texture for blitFramebuffer, we ignore the
kRectsMustMatchForMSAASrc_BlitFramebufferFlag, and may attempt to
copy from one src rect to a different dst rect.

This change updates initDescForDstCopy and setupDstTexture to allocate
larger textures if necessary and accomodate this flags requirements.

Bug: 658277
Change-Id: If4489ac3192dcf6f9996494c63821279721d0a12
Reviewed-on: https://skia-review.googlesource.com/11141
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
This commit is contained in:
Eric Karl 2017-04-03 14:49:05 -07:00 committed by Skia Commit-Bot
parent 8b3f9e64ff
commit 744808823f
9 changed files with 215 additions and 23 deletions
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7
include/gpu/GrCaps.h
View File

@ -189,9 +189,12 @@ public:
* This is can be called before allocating a texture to be a dst for copySurface. This is only
* used for doing dst copies needed in blends, thus the src is always a GrRenderTarget. It will
* populate the origin, config, and flags fields of the desc such that copySurface can
* efficiently succeed.
* efficiently succeed. rectsMustMatch will be set to true if the copy operation must ensure
* that the src and dest rects are identical. disallowSubrect will be set to true if copy rect
* must equal src's bounds.
*/
virtual bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc) const = 0;
virtual bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc,
bool* rectsMustMatch, bool* disallowSubrect) const = 0;
protected:
/** Subclasses must call this at the end of their constructors in order to apply caps

34
src/gpu/GrRenderTargetContext.cpp
View File

@ -1751,10 +1751,11 @@ void GrRenderTargetContext::setupDstTexture(GrRenderTarget* rt, const GrClip& cl
clip.getConservativeBounds(rt->width(), rt->height(), &copyRect);
SkIRect drawIBounds;
SkIRect clippedRect;
opBounds.roundOut(&drawIBounds);
// Cover up for any precision issues by outsetting the op bounds a pixel in each direction.
drawIBounds.outset(1, 1);
if (!copyRect.intersect(drawIBounds)) {
if (!clippedRect.intersect(copyRect, drawIBounds)) {
#ifdef SK_DEBUG
GrCapsDebugf(this->caps(), "Missed an early reject. "
"Bailing on draw from setupDstTexture.\n");
@ -1765,24 +1766,43 @@ void GrRenderTargetContext::setupDstTexture(GrRenderTarget* rt, const GrClip& cl
// MSAA consideration: When there is support for reading MSAA samples in the shader we could
// have per-sample dst values by making the copy multisampled.
GrSurfaceDesc desc;
if (!this->caps()->initDescForDstCopy(rt, &desc)) {
bool rectsMustMatch = false;
bool disallowSubrect = false;
if (!this->caps()->initDescForDstCopy(rt, &desc, &rectsMustMatch, &disallowSubrect)) {
desc.fOrigin = kDefault_GrSurfaceOrigin;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fConfig = rt->config();
}
if (!disallowSubrect) {
copyRect = clippedRect;
}
SkIPoint dstPoint;
SkIPoint dstOffset;
static const uint32_t kFlags = 0;
sk_sp<GrTexture> copy;
if (rectsMustMatch) {
SkASSERT(desc.fOrigin == rt->origin());
desc.fWidth = rt->width();
desc.fHeight = rt->height();
dstPoint = {copyRect.fLeft, copyRect.fTop};
dstOffset = {0, 0};
copy.reset(fContext->resourceProvider()->createTexture(desc, SkBudgeted::kYes, kFlags));
} else {
desc.fWidth = copyRect.width();
desc.fHeight = copyRect.height();
static const uint32_t kFlags = 0;
sk_sp<GrTexture> copy(fContext->resourceProvider()->createApproxTexture(desc, kFlags));
dstPoint = {0, 0};
dstOffset = {copyRect.fLeft, copyRect.fTop};
copy.reset(fContext->resourceProvider()->createApproxTexture(desc, kFlags));
}
if (!copy) {
SkDebugf("Failed to create temporary copy of destination texture.\n");
return;
}
SkIPoint dstPoint = {0, 0};
this->getOpList()->copySurface(copy.get(), rt, copyRect, dstPoint);
dstTexture->setTexture(std::move(copy));
dstTexture->setOffset(copyRect.fLeft, copyRect.fTop);
dstTexture->setOffset(dstOffset);
}

32
src/gpu/gl/GrGLCaps.cpp
View File

@ -1018,6 +1018,7 @@ void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo, const GrGLInterfa
// is available.
if (ctxInfo.version() >= GR_GL_VER(3, 0)) {
fBlitFramebufferFlags = kNoFormatConversionForMSAASrc_BlitFramebufferFlag |
kNoMSAADst_BlitFramebufferFlag |
kRectsMustMatchForMSAASrc_BlitFramebufferFlag;
} else if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample") ||
ctxInfo.hasExtension("GL_ANGLE_framebuffer_blit")) {
@ -1026,7 +1027,8 @@ void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo, const GrGLInterfa
fBlitFramebufferFlags = kNoScalingOrMirroring_BlitFramebufferFlag |
kResolveMustBeFull_BlitFrambufferFlag |
kNoMSAADst_BlitFramebufferFlag |
kNoFormatConversion_BlitFramebufferFlag;
kNoFormatConversion_BlitFramebufferFlag |
kRectsMustMatchForMSAASrc_BlitFramebufferFlag;
}
} else {
if (fUsesMixedSamples) {
@ -2068,7 +2070,14 @@ void GrGLCaps::initConfigTable(const GrContextOptions& contextOptions,
#endif
}
bool GrGLCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc) const {
bool GrGLCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc,
bool* rectsMustMatch, bool* disallowSubrect) const {
// By default, we don't require rects to match.
*rectsMustMatch = false;
// By default, we allow subrects.
*disallowSubrect = false;
// If the src is a texture, we can implement the blit as a draw assuming the config is
// renderable.
if (src->asTexture() && this->isConfigRenderable(src->config(), false)) {
@ -2089,7 +2098,20 @@ bool GrGLCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc
// texture. This code prefers CopyTexSubImage to fbo blit and avoids triggering temporary fbo
// creation. It isn't clear that avoiding temporary fbo creation is actually optimal.
GrSurfaceOrigin originForBlitFramebuffer = kDefault_GrSurfaceOrigin;
if (this->blitFramebufferSupportFlags() & kNoScalingOrMirroring_BlitFramebufferFlag) {
bool rectsMustMatchForBlitFramebuffer = false;
bool disallowSubrectForBlitFramebuffer = false;
if (src->numColorSamples() &&
(this->blitFramebufferSupportFlags() & kResolveMustBeFull_BlitFrambufferFlag)) {
rectsMustMatchForBlitFramebuffer = true;
disallowSubrectForBlitFramebuffer = true;
// Mirroring causes rects to mismatch later, don't allow it.
originForBlitFramebuffer = src->origin();
} else if (src->numColorSamples() && (this->blitFramebufferSupportFlags() &
kRectsMustMatchForMSAASrc_BlitFramebufferFlag)) {
rectsMustMatchForBlitFramebuffer = true;
// Mirroring causes rects to mismatch later, don't allow it.
originForBlitFramebuffer = src->origin();
} else if (this->blitFramebufferSupportFlags() & kNoScalingOrMirroring_BlitFramebufferFlag) {
originForBlitFramebuffer = src->origin();
}
@ -2100,6 +2122,8 @@ bool GrGLCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc
if (this->canConfigBeFBOColorAttachment(kBGRA_8888_GrPixelConfig)) {
desc->fOrigin = originForBlitFramebuffer;
desc->fConfig = kBGRA_8888_GrPixelConfig;
*rectsMustMatch = rectsMustMatchForBlitFramebuffer;
*disallowSubrect = disallowSubrectForBlitFramebuffer;
return true;
}
return false;
@ -2112,6 +2136,8 @@ bool GrGLCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc
if (this->canConfigBeFBOColorAttachment(src->config())) {
desc->fOrigin = originForBlitFramebuffer;
desc->fConfig = src->config();
*rectsMustMatch = rectsMustMatchForBlitFramebuffer;
*disallowSubrect = disallowSubrectForBlitFramebuffer;
return true;
}
return false;

3
src/gpu/gl/GrGLCaps.h
View File

@ -359,7 +359,8 @@ public:
return fRGBAToBGRAReadbackConversionsAreSlow;
}
bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc) const override;
bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc, bool* rectsMustMatch,
bool* disallowSubrect) const override;
private:
enum ExternalFormatUsage {

15
src/gpu/gl/GrGLGpu.cpp
View File

@ -3344,9 +3344,14 @@ static inline bool can_blit_framebuffer_for_copy_surface(const GrSurface* dst,
}
}
if (GrGLCaps::kResolveMustBeFull_BlitFrambufferFlag & blitFramebufferFlags) {
if (srcRT && srcRT->numColorSamples() && dstRT && !dstRT->numColorSamples()) {
if (srcRT && srcRT->numColorSamples()) {
if (dstRT && !dstRT->numColorSamples()) {
return false;
}
if (SkRect::Make(srcRect) != srcRT->getBoundsRect()) {
return false;
}
}
}
if (GrGLCaps::kNoMSAADst_BlitFramebufferFlag & blitFramebufferFlags) {
if (dstRT && dstRT->numColorSamples() > 0) {
@ -3364,10 +3369,14 @@ static inline bool can_blit_framebuffer_for_copy_surface(const GrSurface* dst,
}
}
if (GrGLCaps::kRectsMustMatchForMSAASrc_BlitFramebufferFlag & blitFramebufferFlags) {
if (srcRT && srcRT->numColorSamples() &&
(dstPoint.fX != srcRect.fLeft || dstPoint.fY != srcRect.fTop)) {
if (srcRT && srcRT->numColorSamples()) {
if (dstPoint.fX != srcRect.fLeft || dstPoint.fY != srcRect.fTop) {
return false;
}
if (dst->origin() != src->origin()) {
return false;
}
}
}
return true;
}

7
src/gpu/vk/GrVkCaps.cpp
View File

@ -53,7 +53,12 @@ GrVkCaps::GrVkCaps(const GrContextOptions& contextOptions, const GrVkInterface*
this->init(contextOptions, vkInterface, physDev, featureFlags, extensionFlags);
}
bool GrVkCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc) const {
bool GrVkCaps::initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc,
bool* rectsMustMatch, bool* disallowSubrect) const {
// Vk doesn't use rectsMustMatch or disallowSubrect. Always return false.
*rectsMustMatch = false;
*disallowSubrect = false;
// We can always succeed here with either a CopyImage (none msaa src) or ResolveImage (msaa).
// For CopyImage we can make a simple texture, for ResolveImage we require the dst to be a
// render target as well.

3
src/gpu/vk/GrVkCaps.h
View File

@ -104,7 +104,8 @@ public:
return fPreferedStencilFormat;
}
bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc) const override;
bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc, bool* rectsMustMatch,
bool* disallowSubrect) const override;
private:
enum VkVendor {

130
tests/BlendTest.cpp
View File

@ -5,11 +5,24 @@
* found in the LICENSE file.
*/
#include "Test.h"
#include <functional>
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkColor.h"
#include "SkColorPriv.h"
#include "SkSurface.h"
#include "SkTaskGroup.h"
#include <functional>
#include "SkUtils.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrResourceProvider.h"
#include "GrSurfaceContext.h"
#include "GrSurfaceProxy.h"
#include "GrTexture.h"
#endif
struct Results { int diffs, diffs_0x00, diffs_0xff, diffs_by_1; };
@ -66,3 +79,116 @@ DEF_TEST(Blend_byte_multiply, r) {
};
for (auto multiply : perfect) { REPORTER_ASSERT(r, test(multiply).diffs == 0); }
}
#if SK_SUPPORT_GPU
namespace {
static sk_sp<SkSurface> create_gpu_surface_backend_texture_as_render_target(
GrContext* context, int sampleCnt, int width, int height, GrPixelConfig config,
sk_sp<GrTexture>* backingSurface) {
GrSurfaceDesc backingDesc;
backingDesc.fHeight = height;
backingDesc.fWidth = width;
backingDesc.fConfig = config;
backingDesc.fOrigin = kDefault_GrSurfaceOrigin;
backingDesc.fFlags = kRenderTarget_GrSurfaceFlag;
(*backingSurface)
.reset(context->resourceProvider()->createTexture(backingDesc, SkBudgeted::kNo));
GrBackendTextureDesc desc;
desc.fConfig = config;
desc.fWidth = width;
desc.fHeight = height;
desc.fFlags = kRenderTarget_GrBackendTextureFlag;
desc.fTextureHandle = (*backingSurface)->getTextureHandle();
desc.fSampleCnt = sampleCnt;
sk_sp<SkSurface> surface =
SkSurface::MakeFromBackendTextureAsRenderTarget(context, desc, nullptr);
return surface;
}
}
// Tests blending to a surface with no texture available.
DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(ES2BlendWithNoTexture, reporter, ctxInfo) {
GrContext* context = ctxInfo.grContext();
const int kWidth = 10;
const int kHeight = 10;
const GrPixelConfig kConfig = kRGBA_8888_GrPixelConfig;
const SkColorType kColorType = kRGBA_8888_SkColorType;
// Build our test cases:
struct RectAndSamplePoint {
SkRect rect;
SkIPoint outPoint;
SkIPoint inPoint;
} allRectsAndPoints[3] = {
{SkRect::MakeXYWH(0, 0, 5, 5), SkIPoint::Make(7, 7), SkIPoint::Make(2, 2)},
{SkRect::MakeXYWH(2, 2, 5, 5), SkIPoint::Make(0, 0), SkIPoint::Make(4, 4)},
{SkRect::MakeXYWH(5, 5, 5, 5), SkIPoint::Make(2, 2), SkIPoint::Make(7, 7)},
};
struct TestCase {
RectAndSamplePoint rectAndPoints;
int sampleCnt;
};
std::vector<TestCase> testCases;
for (int sampleCnt : {0, 4}) {
for (auto rectAndPoints : allRectsAndPoints) {
testCases.push_back({rectAndPoints, sampleCnt});
}
}
// Run each test case:
for (auto testCase : testCases) {
int sampleCnt = testCase.sampleCnt;
SkRect paintRect = testCase.rectAndPoints.rect;
SkIPoint outPoint = testCase.rectAndPoints.outPoint;
SkIPoint inPoint = testCase.rectAndPoints.inPoint;
sk_sp<GrTexture> backingSurface;
// BGRA forces a framebuffer blit on ES2.
sk_sp<SkSurface> surface = create_gpu_surface_backend_texture_as_render_target(
context, sampleCnt, kWidth, kHeight, kConfig, &backingSurface);
if (!surface && sampleCnt > 0) {
// Some platforms don't support MSAA.
continue;
}
REPORTER_ASSERT(reporter, !!surface);
// Fill our canvas with 0xFFFF80
SkCanvas* canvas = surface->getCanvas();
SkPaint black_paint;
black_paint.setColor(SkColorSetRGB(0xFF, 0xFF, 0x80));
canvas->drawRect(SkRect::MakeXYWH(0, 0, kWidth, kHeight), black_paint);
// Blend 2x2 pixels at 5,5 with 0x80FFFF. Use multiply blend mode as this will trigger
// a copy of the destination.
SkPaint white_paint;
white_paint.setColor(SkColorSetRGB(0x80, 0xFF, 0xFF));
white_paint.setBlendMode(SkBlendMode::kMultiply);
canvas->drawRect(paintRect, white_paint);
// Read the result into a bitmap.
SkBitmap bitmap;
REPORTER_ASSERT(reporter, bitmap.tryAllocPixels(SkImageInfo::Make(
kWidth, kHeight, kColorType, kPremul_SkAlphaType)));
bitmap.lockPixels();
REPORTER_ASSERT(
reporter,
surface->readPixels(bitmap.info(), bitmap.getPixels(), bitmap.rowBytes(), 0, 0));
// Check the in/out pixels.
REPORTER_ASSERT(reporter, bitmap.getColor(outPoint.x(), outPoint.y()) ==
SkColorSetRGB(0xFF, 0xFF, 0x80));
REPORTER_ASSERT(reporter, bitmap.getColor(inPoint.x(), inPoint.y()) ==
SkColorSetRGB(0x80, 0xFF, 0x80));
// Clean up - surface depends on backingSurface and must be released first.
bitmap.unlockPixels();
surface.reset();
backingSurface.reset();
}
}
#endif

3
tools/gpu/GrTest.cpp
View File

@ -272,7 +272,8 @@ public:
bool isConfigTexturable(GrPixelConfig config) const override { return false; }
bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const override { return false; }
bool canConfigBeImageStorage(GrPixelConfig) const override { return false; }
bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc) const override {
bool initDescForDstCopy(const GrRenderTarget* src, GrSurfaceDesc* desc, bool* rectsMustMatch,
bool* disallowSubrect) const override {
return false;
}