/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGpu.h"
#include "GrBackendSemaphore.h"
#include "GrBackendSurface.h"
#include "GrBuffer.h"
#include "GrCaps.h"
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrGpuResourcePriv.h"
#include "GrMesh.h"
#include "GrPathRendering.h"
#include "GrPipeline.h"
#include "GrRenderTargetPriv.h"
#include "GrResourceCache.h"
#include "GrResourceProvider.h"
#include "GrSemaphore.h"
#include "GrStencilAttachment.h"
#include "GrStencilSettings.h"
#include "GrSurfacePriv.h"
#include "GrTexturePriv.h"
#include "GrTracing.h"
#include "SkJSONWriter.h"
#include "SkMathPriv.h"
////////////////////////////////////////////////////////////////////////////////
GrGpu::GrGpu(GrContext* context)
: fResetTimestamp(kExpiredTimestamp+1)
, fResetBits(kAll_GrBackendState)
, fContext(context) {
}
GrGpu::~GrGpu() {}
void GrGpu::disconnect(DisconnectType) {}
////////////////////////////////////////////////////////////////////////////////
bool GrGpu::isACopyNeededForTextureParams(int width, int height,
const GrSamplerState& textureParams,
GrTextureProducer::CopyParams* copyParams,
SkScalar scaleAdjust[2]) const {
const GrCaps& caps = *this->caps();
if (textureParams.isRepeated() && !caps.npotTextureTileSupport() &&
(!SkIsPow2(width) || !SkIsPow2(height))) {
SkASSERT(scaleAdjust);
copyParams->fWidth = GrNextPow2(width);
copyParams->fHeight = GrNextPow2(height);
SkASSERT(scaleAdjust);
scaleAdjust[0] = ((SkScalar) copyParams->fWidth) / width;
scaleAdjust[1] = ((SkScalar) copyParams->fHeight) / height;
switch (textureParams.filter()) {
case GrSamplerState::Filter::kNearest:
copyParams->fFilter = GrSamplerState::Filter::kNearest;
break;
case GrSamplerState::Filter::kBilerp:
case GrSamplerState::Filter::kMipMap:
// We are only ever scaling up so no reason to ever indicate kMipMap.
copyParams->fFilter = GrSamplerState::Filter::kBilerp;
break;
}
return true;
}
return false;
}
sk_sp<GrTexture> GrGpu::createTexture(const GrSurfaceDesc& origDesc, SkBudgeted budgeted,
const GrMipLevel texels[], int mipLevelCount) {
GR_CREATE_TRACE_MARKER_CONTEXT("GrGpu", "createTexture", fContext);
GrSurfaceDesc desc = origDesc;
GrMipMapped mipMapped = mipLevelCount > 1 ? GrMipMapped::kYes : GrMipMapped::kNo;
if (!this->caps()->validateSurfaceDesc(desc, mipMapped)) {
return nullptr;
}
bool isRT = desc.fFlags & kRenderTarget_GrSurfaceFlag;
if (isRT) {
desc.fSampleCnt = this->caps()->getRenderTargetSampleCount(desc.fSampleCnt, desc.fConfig);
}
// Attempt to catch un- or wrongly initialized sample counts.
SkASSERT(desc.fSampleCnt > 0 && desc.fSampleCnt <= 64);
if (mipLevelCount && (desc.fFlags & kPerformInitialClear_GrSurfaceFlag)) {
return nullptr;
}
this->handleDirtyContext();
sk_sp<GrTexture> tex = this->onCreateTexture(desc, budgeted, texels, mipLevelCount);
if (tex) {
if (!this->caps()->reuseScratchTextures() && !isRT) {
tex->resourcePriv().removeScratchKey();
}
fStats.incTextureCreates();
if (mipLevelCount) {
if (texels[0].fPixels) {
fStats.incTextureUploads();
}
}
}
return tex;
}
sk_sp<GrTexture> GrGpu::createTexture(const GrSurfaceDesc& desc, SkBudgeted budgeted) {
return this->createTexture(desc, budgeted, nullptr, 0);
}
sk_sp<GrTexture> GrGpu::wrapBackendTexture(const GrBackendTexture& backendTex,
GrWrapOwnership ownership) {
this->handleDirtyContext();
if (!this->caps()->isConfigTexturable(backendTex.config())) {
return nullptr;
}
if (backendTex.width() > this->caps()->maxTextureSize() ||
backendTex.height() > this->caps()->maxTextureSize()) {
return nullptr;
}
sk_sp<GrTexture> tex = this->onWrapBackendTexture(backendTex, ownership);
if (!tex) {
return nullptr;
}
return tex;
}
sk_sp<GrTexture> GrGpu::wrapRenderableBackendTexture(const GrBackendTexture& backendTex,
int sampleCnt, GrWrapOwnership ownership) {
this->handleDirtyContext();
if (sampleCnt < 1) {
return nullptr;
}
if (!this->caps()->isConfigTexturable(backendTex.config()) ||
!this->caps()->getRenderTargetSampleCount(sampleCnt, backendTex.config())) {
return nullptr;
}
if (backendTex.width() > this->caps()->maxRenderTargetSize() ||
backendTex.height() > this->caps()->maxRenderTargetSize()) {
return nullptr;
}
sk_sp<GrTexture> tex = this->onWrapRenderableBackendTexture(backendTex, sampleCnt, ownership);
if (!tex) {
return nullptr;
}
SkASSERT(tex->asRenderTarget());
return tex;
}
sk_sp<GrRenderTarget> GrGpu::wrapBackendRenderTarget(const GrBackendRenderTarget& backendRT) {
if (0 == this->caps()->getRenderTargetSampleCount(backendRT.sampleCnt(), backendRT.config())) {
return nullptr;
}
this->handleDirtyContext();
return this->onWrapBackendRenderTarget(backendRT);
}
sk_sp<GrRenderTarget> GrGpu::wrapBackendTextureAsRenderTarget(const GrBackendTexture& tex,
int sampleCnt) {
if (0 == this->caps()->getRenderTargetSampleCount(sampleCnt, tex.config())) {
return nullptr;
}
int maxSize = this->caps()->maxTextureSize();
if (tex.width() > maxSize || tex.height() > maxSize) {
return nullptr;
}
this->handleDirtyContext();
return this->onWrapBackendTextureAsRenderTarget(tex, sampleCnt);
}
GrBuffer* GrGpu::createBuffer(size_t size, GrBufferType intendedType,
GrAccessPattern accessPattern, const void* data) {
this->handleDirtyContext();
GrBuffer* buffer = this->onCreateBuffer(size, intendedType, accessPattern, data);
if (!this->caps()->reuseScratchBuffers()) {
buffer->resourcePriv().removeScratchKey();
}
return buffer;
}
bool GrGpu::copySurface(GrSurface* dst, GrSurfaceOrigin dstOrigin,
GrSurface* src, GrSurfaceOrigin srcOrigin,
const SkIRect& srcRect, const SkIPoint& dstPoint) {
GR_CREATE_TRACE_MARKER_CONTEXT("GrGpu", "copySurface", fContext);
SkASSERT(dst && src);
this->handleDirtyContext();
return this->onCopySurface(dst, dstOrigin, src, srcOrigin, srcRect, dstPoint);
}
bool GrGpu::getReadPixelsInfo(GrSurface* srcSurface, GrSurfaceOrigin srcOrigin, int width,
int height, size_t rowBytes, GrColorType dstColorType,
GrSRGBConversion srgbConversion, DrawPreference* drawPreference,
ReadPixelTempDrawInfo* tempDrawInfo) {
SkASSERT(drawPreference);
SkASSERT(tempDrawInfo);
SkASSERT(srcSurface);
SkASSERT(kGpuPrefersDraw_DrawPreference != *drawPreference);
// We currently do not support reading into the packed formats 565 or 4444 as they are not
// required to have read back support on all devices and backends.
if (GrColorType::kRGB_565 == dstColorType || GrColorType::kABGR_4444 == dstColorType) {
return false;
}
GrPixelConfig tempSurfaceConfig = kUnknown_GrPixelConfig;
// GrGpu::readPixels doesn't do any sRGB conversions, so we must draw if there is one.
switch (srgbConversion) {
case GrSRGBConversion::kNone:
// We support reading from RGBA to just A. In that case there is no sRGB version of the
// dst format but we still want to succeed.
if (GrColorTypeIsAlphaOnly(dstColorType)) {
tempSurfaceConfig = GrColorTypeToPixelConfig(dstColorType, GrSRGBEncoded::kNo);
} else {
tempSurfaceConfig = GrColorTypeToPixelConfig(
dstColorType, GrPixelConfigIsSRGBEncoded(srcSurface->config()));
}
break;
case GrSRGBConversion::kLinearToSRGB:
SkASSERT(this->caps()->srgbSupport());
tempSurfaceConfig = GrColorTypeToPixelConfig(dstColorType, GrSRGBEncoded::kYes);
// Currently we don't expect to make a SRGB encoded surface and then read data from it
// such that we treat it as though it were linear and is then converted to sRGB.
if (GrPixelConfigIsSRGB(srcSurface->config())) {
return false;
}
ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
break;
case GrSRGBConversion::kSRGBToLinear:
SkASSERT(this->caps()->srgbSupport());
tempSurfaceConfig = GrColorTypeToPixelConfig(dstColorType, GrSRGBEncoded::kNo);
// We don't currently support reading sRGB encoded data into linear from a surface
// unless it is an sRGB-encoded config. That is likely to change when we need to store
// sRGB encoded data in 101010102 and F16 textures. We'll have to provoke the caller to
// do the conversion in a shader.
if (GrSRGBEncoded::kNo == GrPixelConfigIsSRGBEncoded(srcSurface->config())) {
return false;
}
ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
break;
}
if (kUnknown_GrPixelConfig == tempSurfaceConfig) {
return false;
}
// Default values for intermediate draws. The intermediate texture config matches the dst's
// config, is approx sized to the read rect, no swizzling or spoofing of the dst config.
tempDrawInfo->fTempSurfaceDesc.fFlags = kRenderTarget_GrSurfaceFlag;
tempDrawInfo->fTempSurfaceDesc.fWidth = width;
tempDrawInfo->fTempSurfaceDesc.fHeight = height;
tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 1;
tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // no CPU y-flip for TL.
tempDrawInfo->fTempSurfaceDesc.fConfig = tempSurfaceConfig;
tempDrawInfo->fTempSurfaceFit = SkBackingFit::kApprox;
tempDrawInfo->fSwizzle = GrSwizzle::RGBA();
tempDrawInfo->fReadColorType = dstColorType;
if (!this->onGetReadPixelsInfo(srcSurface, srcOrigin, width, height, rowBytes, dstColorType,
drawPreference, tempDrawInfo)) {
return false;
}
// Check to see if we're going to request that the caller draw when drawing is not possible.
if (!srcSurface->asTexture() ||
!this->caps()->isConfigRenderable(tempDrawInfo->fTempSurfaceDesc.fConfig)) {
// If we don't have a fallback to a straight read then fail.
if (kRequireDraw_DrawPreference == *drawPreference) {
return false;
}
*drawPreference = kNoDraw_DrawPreference;
}
return true;
}
bool GrGpu::getWritePixelsInfo(GrSurface* dstSurface, GrSurfaceOrigin dstOrigin, int width,
int height, GrColorType srcColorType,
GrSRGBConversion srgbConversion, DrawPreference* drawPreference,
WritePixelTempDrawInfo* tempDrawInfo) {
SkASSERT(drawPreference);
SkASSERT(tempDrawInfo);
SkASSERT(dstSurface);
SkASSERT(kGpuPrefersDraw_DrawPreference != *drawPreference);
GrPixelConfig tempSurfaceConfig = kUnknown_GrPixelConfig;
// GrGpu::writePixels doesn't do any sRGB conversions, so we must draw if there is one.
switch (srgbConversion) {
case GrSRGBConversion::kNone:
// We support writing just A to a RGBA. In that case there is no sRGB version of the
// src format but we still want to succeed.
if (GrColorTypeIsAlphaOnly(srcColorType)) {
tempSurfaceConfig = GrColorTypeToPixelConfig(srcColorType, GrSRGBEncoded::kNo);
} else {
tempSurfaceConfig = GrColorTypeToPixelConfig(
srcColorType, GrPixelConfigIsSRGBEncoded(dstSurface->config()));
}
break;
case GrSRGBConversion::kLinearToSRGB:
SkASSERT(this->caps()->srgbSupport());
// This assert goes away when we start referring to CPU data using color type.
tempSurfaceConfig = GrColorTypeToPixelConfig(srcColorType, GrSRGBEncoded::kNo);
// We don't currently support storing sRGB encoded data in a surface unless it is
// an SRGB-encoded config. That is likely to change when we need to store sRGB encoded
// data in 101010102 and F16 textures. We'll have to provoke the caller to do the
// conversion in a shader.
if (!GrPixelConfigIsSRGB(dstSurface->config())) {
return false;
}
ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
break;
case GrSRGBConversion::kSRGBToLinear:
SkASSERT(this->caps()->srgbSupport());
tempSurfaceConfig = GrColorTypeToPixelConfig(srcColorType, GrSRGBEncoded::kYes);
// Currently we don't expect to make a SRGB encoded surface and then succeed at
// treating it as though it were linear and then convert to sRGB.
if (GrSRGBEncoded::kYes == GrPixelConfigIsSRGBEncoded(dstSurface->config())) {
return false;
}
ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
break;
}
if (kUnknown_GrPixelConfig == tempSurfaceConfig) {
return false;
}
// Default values for intermediate draws. The intermediate texture config matches the dst's
// config, is approx sized to the write rect, no swizzling or sppofing of the src config.
tempDrawInfo->fTempSurfaceDesc.fFlags = kNone_GrSurfaceFlags;
tempDrawInfo->fTempSurfaceDesc.fConfig = tempSurfaceConfig;
tempDrawInfo->fTempSurfaceDesc.fWidth = width;
tempDrawInfo->fTempSurfaceDesc.fHeight = height;
tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 1;
tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // no CPU y-flip for TL.
tempDrawInfo->fSwizzle = GrSwizzle::RGBA();
tempDrawInfo->fWriteColorType = srcColorType;
if (!this->onGetWritePixelsInfo(dstSurface, dstOrigin, width, height, srcColorType,
drawPreference, tempDrawInfo)) {
return false;
}
// Check to see if we're going to request that the caller draw when drawing is not possible.
if (!dstSurface->asRenderTarget() ||
!this->caps()->isConfigTexturable(tempDrawInfo->fTempSurfaceDesc.fConfig)) {
// If we don't have a fallback to a straight upload then fail.
if (kRequireDraw_DrawPreference == *drawPreference /*TODO ||
!this->caps()->isConfigTexturable(srcConfig)*/) {
return false;
}
*drawPreference = kNoDraw_DrawPreference;
}
return true;
}
bool GrGpu::readPixels(GrSurface* surface, GrSurfaceOrigin origin, int left, int top, int width,
int height, GrColorType dstColorType, void* buffer, size_t rowBytes) {
SkASSERT(surface);
int bpp = GrColorTypeBytesPerPixel(dstColorType);
if (!GrSurfacePriv::AdjustReadPixelParams(surface->width(), surface->height(), bpp,
&left, &top, &width, &height,
&buffer,
&rowBytes)) {
return false;
}
this->handleDirtyContext();
return this->onReadPixels(surface, origin, left, top, width, height, dstColorType, buffer,
rowBytes);
}
bool GrGpu::writePixels(GrSurface* surface, GrSurfaceOrigin origin, int left, int top, int width,
int height, GrColorType srcColorType, const GrMipLevel texels[],
int mipLevelCount) {
SkASSERT(surface);
if (1 == mipLevelCount) {
// We require that if we are not mipped, then the write region is contained in the surface
SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height);
SkIRect bounds = SkIRect::MakeWH(surface->width(), surface->height());
if (!bounds.contains(subRect)) {
return false;
}
} else if (0 != left || 0 != top || width != surface->width() || height != surface->height()) {
// We require that if the texels are mipped, than the write region is the entire surface
return false;
}
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
if (!texels[currentMipLevel].fPixels ) {
return false;
}
}
this->handleDirtyContext();
if (this->onWritePixels(surface, origin, left, top, width, height, srcColorType, texels,
mipLevelCount)) {
SkIRect rect = SkIRect::MakeXYWH(left, top, width, height);
this->didWriteToSurface(surface, origin, &rect, mipLevelCount);
fStats.incTextureUploads();
return true;
}
return false;
}
bool GrGpu::writePixels(GrSurface* surface, GrSurfaceOrigin origin, int left, int top, int width,
int height, GrColorType srcColorType, const void* buffer, size_t rowBytes) {
GrMipLevel mipLevel = { buffer, rowBytes };
return this->writePixels(surface, origin, left, top, width, height, srcColorType, &mipLevel, 1);
}
bool GrGpu::transferPixels(GrTexture* texture, int left, int top, int width, int height,
GrColorType bufferColorType, GrBuffer* transferBuffer, size_t offset,
size_t rowBytes) {
SkASSERT(transferBuffer);
// We require that the write region is contained in the texture
SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height);
SkIRect bounds = SkIRect::MakeWH(texture->width(), texture->height());
if (!bounds.contains(subRect)) {
return false;
}
this->handleDirtyContext();
if (this->onTransferPixels(texture, left, top, width, height, bufferColorType, transferBuffer,
offset, rowBytes)) {
SkIRect rect = SkIRect::MakeXYWH(left, top, width, height);
this->didWriteToSurface(texture, kTopLeft_GrSurfaceOrigin, &rect);
fStats.incTransfersToTexture();
return true;
}
return false;
}
void GrGpu::resolveRenderTarget(GrRenderTarget* target) {
SkASSERT(target);
this->handleDirtyContext();
this->onResolveRenderTarget(target);
}
void GrGpu::didWriteToSurface(GrSurface* surface, GrSurfaceOrigin origin, const SkIRect* bounds,
uint32_t mipLevels) const {
SkASSERT(surface);
// Mark any MIP chain and resolve buffer as dirty if and only if there is a non-empty bounds.
if (nullptr == bounds || !bounds->isEmpty()) {
if (GrRenderTarget* target = surface->asRenderTarget()) {
SkIRect flippedBounds;
if (kBottomLeft_GrSurfaceOrigin == origin && bounds) {
flippedBounds = {bounds->fLeft, surface->height() - bounds->fBottom,
bounds->fRight, surface->height() - bounds->fTop};
bounds = &flippedBounds;
}
target->flagAsNeedingResolve(bounds);
}
GrTexture* texture = surface->asTexture();
if (texture && 1 == mipLevels) {
texture->texturePriv().markMipMapsDirty();
}
}
}
GrSemaphoresSubmitted GrGpu::finishFlush(int numSemaphores,
GrBackendSemaphore backendSemaphores[]) {
GrResourceProvider* resourceProvider = fContext->contextPriv().resourceProvider();
if (this->caps()->fenceSyncSupport()) {
for (int i = 0; i < numSemaphores; ++i) {
sk_sp<GrSemaphore> semaphore;
if (backendSemaphores[i].isInitialized()) {
semaphore = resourceProvider->wrapBackendSemaphore(
backendSemaphores[i], GrResourceProvider::SemaphoreWrapType::kWillSignal,
kBorrow_GrWrapOwnership);
} else {
semaphore = resourceProvider->makeSemaphore(false);
}
this->insertSemaphore(semaphore, false);
if (!backendSemaphores[i].isInitialized()) {
semaphore->setBackendSemaphore(&backendSemaphores[i]);
}
}
}
this->onFinishFlush((numSemaphores > 0 && this->caps()->fenceSyncSupport()));
return this->caps()->fenceSyncSupport() ? GrSemaphoresSubmitted::kYes
: GrSemaphoresSubmitted::kNo;
}
void GrGpu::dumpJSON(SkJSONWriter* writer) const {
writer->beginObject();
// TODO: Is there anything useful in the base class to dump here?
this->onDumpJSON(writer);
writer->endObject();
}