/*
* 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 "GrCaps.h"
#include "GrContext.h"
#include "GrGpuResourcePriv.h"
#include "GrIndexBuffer.h"
#include "GrPathRendering.h"
#include "GrPipeline.h"
#include "GrResourceCache.h"
#include "GrResourceProvider.h"
#include "GrRenderTargetPriv.h"
#include "GrStencilAttachment.h"
#include "GrSurfacePriv.h"
#include "GrTransferBuffer.h"
#include "GrVertexBuffer.h"
#include "GrVertices.h"
GrVertices& GrVertices::operator =(const GrVertices& di) {
fPrimitiveType = di.fPrimitiveType;
fStartVertex = di.fStartVertex;
fStartIndex = di.fStartIndex;
fVertexCount = di.fVertexCount;
fIndexCount = di.fIndexCount;
fInstanceCount = di.fInstanceCount;
fVerticesPerInstance = di.fVerticesPerInstance;
fIndicesPerInstance = di.fIndicesPerInstance;
fMaxInstancesPerDraw = di.fMaxInstancesPerDraw;
fVertexBuffer.reset(di.vertexBuffer());
fIndexBuffer.reset(di.indexBuffer());
return *this;
}
////////////////////////////////////////////////////////////////////////////////
GrGpu::GrGpu(GrContext* context)
: fResetTimestamp(kExpiredTimestamp+1)
, fResetBits(kAll_GrBackendState)
, fContext(context) {
}
GrGpu::~GrGpu() {}
void GrGpu::contextAbandoned() {}
////////////////////////////////////////////////////////////////////////////////
bool GrGpu::makeCopyForTextureParams(int width, int height, const GrTextureParams& textureParams,
GrTextureProducer::CopyParams* copyParams) const {
const GrCaps& caps = *this->caps();
if (textureParams.isTiled() && !caps.npotTextureTileSupport() &&
(!SkIsPow2(width) || !SkIsPow2(height))) {
copyParams->fWidth = GrNextPow2(width);
copyParams->fHeight = GrNextPow2(height);
switch (textureParams.filterMode()) {
case GrTextureParams::kNone_FilterMode:
copyParams->fFilter = GrTextureParams::kNone_FilterMode;
break;
case GrTextureParams::kBilerp_FilterMode:
case GrTextureParams::kMipMap_FilterMode:
// We are only ever scaling up so no reason to ever indicate kMipMap.
copyParams->fFilter = GrTextureParams::kBilerp_FilterMode;
break;
}
return true;
}
return false;
}
static GrSurfaceOrigin resolve_origin(GrSurfaceOrigin origin, bool renderTarget) {
// By default, GrRenderTargets are GL's normal orientation so that they
// can be drawn to by the outside world without the client having
// to render upside down.
if (kDefault_GrSurfaceOrigin == origin) {
return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
} else {
return origin;
}
}
GrTexture* GrGpu::createTexture(const GrSurfaceDesc& origDesc, SkBudgeted budgeted,
const void* srcData, size_t rowBytes) {
GrSurfaceDesc desc = origDesc;
if (!this->caps()->isConfigTexturable(desc.fConfig)) {
return nullptr;
}
bool isRT = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
if (isRT && !this->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
return nullptr;
}
// We currently do not support multisampled textures
if (!isRT && desc.fSampleCnt > 0) {
return nullptr;
}
GrTexture *tex = nullptr;
if (isRT) {
int maxRTSize = this->caps()->maxRenderTargetSize();
if (desc.fWidth > maxRTSize || desc.fHeight > maxRTSize) {
return nullptr;
}
} else {
int maxSize = this->caps()->maxTextureSize();
if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
return nullptr;
}
}
GrGpuResource::LifeCycle lifeCycle = SkBudgeted::kYes == budgeted ?
GrGpuResource::kCached_LifeCycle :
GrGpuResource::kUncached_LifeCycle;
desc.fSampleCnt = SkTMin(desc.fSampleCnt, this->caps()->maxSampleCount());
// Attempt to catch un- or wrongly initialized sample counts;
SkASSERT(desc.fSampleCnt >= 0 && desc.fSampleCnt <= 64);
desc.fOrigin = resolve_origin(desc.fOrigin, isRT);
if (GrPixelConfigIsCompressed(desc.fConfig)) {
// We shouldn't be rendering into this
SkASSERT(!isRT);
SkASSERT(0 == desc.fSampleCnt);
if (!this->caps()->npotTextureTileSupport() &&
(!SkIsPow2(desc.fWidth) || !SkIsPow2(desc.fHeight))) {
return nullptr;
}
this->handleDirtyContext();
tex = this->onCreateCompressedTexture(desc, lifeCycle, srcData);
} else {
this->handleDirtyContext();
tex = this->onCreateTexture(desc, lifeCycle, srcData, rowBytes);
}
if (!this->caps()->reuseScratchTextures() && !isRT) {
tex->resourcePriv().removeScratchKey();
}
if (tex) {
fStats.incTextureCreates();
if (srcData) {
fStats.incTextureUploads();
}
}
return tex;
}
GrTexture* GrGpu::wrapBackendTexture(const GrBackendTextureDesc& desc, GrWrapOwnership ownership) {
this->handleDirtyContext();
if (!this->caps()->isConfigTexturable(desc.fConfig)) {
return nullptr;
}
if ((desc.fFlags & kRenderTarget_GrBackendTextureFlag) &&
!this->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
return nullptr;
}
int maxSize = this->caps()->maxTextureSize();
if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
return nullptr;
}
GrTexture* tex = this->onWrapBackendTexture(desc, ownership);
if (nullptr == tex) {
return nullptr;
}
// TODO: defer this and attach dynamically
GrRenderTarget* tgt = tex->asRenderTarget();
if (tgt && !fContext->resourceProvider()->attachStencilAttachment(tgt)) {
tex->unref();
return nullptr;
} else {
return tex;
}
}
GrRenderTarget* GrGpu::wrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc,
GrWrapOwnership ownership) {
if (!this->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
return nullptr;
}
this->handleDirtyContext();
return this->onWrapBackendRenderTarget(desc, ownership);
}
GrRenderTarget* GrGpu::wrapBackendTextureAsRenderTarget(const GrBackendTextureDesc& desc,
GrWrapOwnership ownership) {
this->handleDirtyContext();
if (!(desc.fFlags & kRenderTarget_GrBackendTextureFlag)) {
return nullptr;
}
if (!this->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
return nullptr;
}
int maxSize = this->caps()->maxTextureSize();
if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
return nullptr;
}
return this->onWrapBackendTextureAsRenderTarget(desc, ownership);
}
GrVertexBuffer* GrGpu::createVertexBuffer(size_t size, bool dynamic) {
this->handleDirtyContext();
GrVertexBuffer* vb = this->onCreateVertexBuffer(size, dynamic);
if (!this->caps()->reuseScratchBuffers()) {
vb->resourcePriv().removeScratchKey();
}
return vb;
}
GrIndexBuffer* GrGpu::createIndexBuffer(size_t size, bool dynamic) {
this->handleDirtyContext();
GrIndexBuffer* ib = this->onCreateIndexBuffer(size, dynamic);
if (!this->caps()->reuseScratchBuffers()) {
ib->resourcePriv().removeScratchKey();
}
return ib;
}
GrTransferBuffer* GrGpu::createTransferBuffer(size_t size, TransferType type) {
this->handleDirtyContext();
GrTransferBuffer* tb = this->onCreateTransferBuffer(size, type);
return tb;
}
void GrGpu::clear(const SkIRect& rect,
GrColor color,
GrRenderTarget* renderTarget) {
SkASSERT(renderTarget);
SkASSERT(SkIRect::MakeWH(renderTarget->width(), renderTarget->height()).contains(rect));
this->handleDirtyContext();
this->onClear(renderTarget, rect, color);
}
void GrGpu::clearStencilClip(const SkIRect& rect,
bool insideClip,
GrRenderTarget* renderTarget) {
SkASSERT(renderTarget);
this->handleDirtyContext();
this->onClearStencilClip(renderTarget, rect, insideClip);
}
bool GrGpu::copySurface(GrSurface* dst,
GrSurface* src,
const SkIRect& srcRect,
const SkIPoint& dstPoint) {
SkASSERT(dst && src);
this->handleDirtyContext();
return this->onCopySurface(dst, src, srcRect, dstPoint);
}
bool GrGpu::getReadPixelsInfo(GrSurface* srcSurface, int width, int height, size_t rowBytes,
GrPixelConfig readConfig, DrawPreference* drawPreference,
ReadPixelTempDrawInfo* tempDrawInfo) {
SkASSERT(drawPreference);
SkASSERT(tempDrawInfo);
SkASSERT(kGpuPrefersDraw_DrawPreference != *drawPreference);
// We currently do not support reading into a compressed buffer
if (GrPixelConfigIsCompressed(readConfig)) {
return false;
}
if (!this->onGetReadPixelsInfo(srcSurface, width, height, rowBytes, readConfig, 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, false)) {
// 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, int width, int height,
GrPixelConfig srcConfig, DrawPreference* drawPreference,
WritePixelTempDrawInfo* tempDrawInfo) {
SkASSERT(drawPreference);
SkASSERT(tempDrawInfo);
SkASSERT(kGpuPrefersDraw_DrawPreference != *drawPreference);
if (GrPixelConfigIsCompressed(dstSurface->desc().fConfig) &&
dstSurface->desc().fConfig != srcConfig) {
return false;
}
if (SkToBool(dstSurface->asRenderTarget())) {
if (this->caps()->useDrawInsteadOfAllRenderTargetWrites()) {
ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
} else if (this->caps()->useDrawInsteadOfPartialRenderTargetWrite() &&
(width < dstSurface->width() || height < dstSurface->height())) {
ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
}
}
if (!this->onGetWritePixelsInfo(dstSurface, width, height, srcConfig, 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 ||
!this->caps()->isConfigTexturable(srcConfig)) {
return false;
}
*drawPreference = kNoDraw_DrawPreference;
}
return true;
}
bool GrGpu::readPixels(GrSurface* surface,
int left, int top, int width, int height,
GrPixelConfig config, void* buffer,
size_t rowBytes) {
this->handleDirtyContext();
// We cannot read pixels into a compressed buffer
if (GrPixelConfigIsCompressed(config)) {
return false;
}
size_t bpp = GrBytesPerPixel(config);
if (!GrSurfacePriv::AdjustReadPixelParams(surface->width(), surface->height(), bpp,
&left, &top, &width, &height,
&buffer,
&rowBytes)) {
return false;
}
return this->onReadPixels(surface,
left, top, width, height,
config, buffer,
rowBytes);
}
bool GrGpu::writePixels(GrSurface* surface,
int left, int top, int width, int height,
GrPixelConfig config, const void* buffer,
size_t rowBytes) {
if (!buffer || !surface) {
return false;
}
this->handleDirtyContext();
if (this->onWritePixels(surface, left, top, width, height, config, buffer, rowBytes)) {
fStats.incTextureUploads();
return true;
}
return false;
}
bool GrGpu::transferPixels(GrSurface* surface,
int left, int top, int width, int height,
GrPixelConfig config, GrTransferBuffer* buffer,
size_t offset, size_t rowBytes) {
SkASSERT(buffer);
this->handleDirtyContext();
if (this->onTransferPixels(surface, left, top, width, height, config,
buffer, offset, rowBytes)) {
fStats.incTransfersToTexture();
return true;
}
return false;
}
void GrGpu::resolveRenderTarget(GrRenderTarget* target) {
SkASSERT(target);
this->handleDirtyContext();
this->onResolveRenderTarget(target);
}
////////////////////////////////////////////////////////////////////////////////
void GrGpu::draw(const DrawArgs& args, const GrVertices& vertices) {
this->handleDirtyContext();
if (GrXferBarrierType barrierType = args.fPipeline->xferBarrierType(*this->caps())) {
this->xferBarrier(args.fPipeline->getRenderTarget(), barrierType);
}
GrVertices::Iterator iter;
const GrNonInstancedVertices* verts = iter.init(vertices);
do {
this->onDraw(args, *verts);
fStats.incNumDraws();
} while ((verts = iter.next()));
}