Move vertex buffer setup out of drawPackedGlyph().
This gets a very welcome ~10% speedup on my Mac.
Committed: https://skia.googlesource.com/skia/+/1d38619389cc1100bd516b9acbf17b7bd42d33ce
R=bsalomon@google.com
Author: jvanverth@google.com
Review URL: https://codereview.chromium.org/414573002
diff --git a/src/gpu/GrDistanceFieldTextContext.cpp b/src/gpu/GrDistanceFieldTextContext.cpp
index fe6e50f..8827382 100755
--- a/src/gpu/GrDistanceFieldTextContext.cpp
+++ b/src/gpu/GrDistanceFieldTextContext.cpp
@@ -48,11 +48,9 @@
fStrike = NULL;
fGammaTexture = NULL;
- fCurrTexture = NULL;
fCurrVertex = 0;
fVertices = NULL;
- fMaxVertices = 0;
}
GrDistanceFieldTextContext::~GrDistanceFieldTextContext() {
@@ -108,7 +106,8 @@
if (fCurrVertex > 0) {
// setup our sampler state for our text texture/atlas
SkASSERT(SkIsAlign4(fCurrVertex));
- SkASSERT(fCurrTexture);
+ GrTexture* currTexture = fStrike->getTexture();
+ SkASSERT(currTexture);
GrTextureParams params(SkShader::kRepeat_TileMode, GrTextureParams::kBilerp_FilterMode);
GrTextureParams gammaParams(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode);
@@ -125,7 +124,7 @@
bool useBGR = SkDeviceProperties::Geometry::kBGR_Layout ==
fDeviceProperties.fGeometry.getLayout();
drawState->addCoverageEffect(GrDistanceFieldLCDTextureEffect::Create(
- fCurrTexture,
+ currTexture,
params,
fGammaTexture,
gammaParams,
@@ -155,14 +154,14 @@
U8CPU lum = SkColorSpaceLuminance::computeLuminance(fDeviceProperties.fGamma,
filteredColor);
drawState->addCoverageEffect(GrDistanceFieldTextureEffect::Create(
- fCurrTexture, params,
+ currTexture, params,
fGammaTexture, gammaParams,
lum/255.f,
fContext->getMatrix().isSimilarity()),
kGlyphCoordsAttributeIndex)->unref();
#else
drawState->addCoverageEffect(GrDistanceFieldTextureEffect::Create(
- fCurrTexture, params,
+ currTexture, params,
fContext->getMatrix().isSimilarity()),
kGlyphCoordsAttributeIndex)->unref();
#endif
@@ -176,12 +175,10 @@
fDrawTarget->drawIndexedInstances(kTriangles_GrPrimitiveType,
nGlyphs,
4, 6);
- fDrawTarget->resetVertexSource();
- fVertices = NULL;
- fMaxVertices = 0;
fCurrVertex = 0;
- SkSafeSetNull(fCurrTexture);
}
+ fDrawTarget->resetVertexSource();
+ fVertices = NULL;
}
namespace {
@@ -197,13 +194,6 @@
void GrDistanceFieldTextContext::drawPackedGlyph(GrGlyph::PackedID packed,
SkFixed vx, SkFixed vy,
GrFontScaler* scaler) {
- if (NULL == fDrawTarget) {
- return;
- }
- if (NULL == fStrike) {
- fStrike = fContext->getFontCache()->getStrike(scaler, true);
- }
-
GrGlyph* glyph = fStrike->getGlyph(packed, scaler);
if (NULL == glyph || glyph->fBounds.isEmpty()) {
return;
@@ -286,44 +276,6 @@
GrTexture* texture = glyph->fPlot->texture();
SkASSERT(texture);
- if (fCurrTexture != texture || fCurrVertex + 4 > fMaxVertices) {
- this->flushGlyphs();
- fCurrTexture = texture;
- fCurrTexture->ref();
- }
-
- if (NULL == fVertices) {
- // If we need to reserve vertices allow the draw target to suggest
- // a number of verts to reserve and whether to perform a flush.
- fMaxVertices = kMinRequestedVerts;
- fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
- SK_ARRAY_COUNT(gTextVertexAttribs));
- bool flush = fDrawTarget->geometryHints(&fMaxVertices, NULL);
- if (flush) {
- this->flushGlyphs();
- fContext->flush();
- fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
- SK_ARRAY_COUNT(gTextVertexAttribs));
- }
- fMaxVertices = kDefaultRequestedVerts;
- // ignore return, no point in flushing again.
- fDrawTarget->geometryHints(&fMaxVertices, NULL);
-
- int maxQuadVertices = 4 * fContext->getQuadIndexBuffer()->maxQuads();
- if (fMaxVertices < kMinRequestedVerts) {
- fMaxVertices = kDefaultRequestedVerts;
- } else if (fMaxVertices > maxQuadVertices) {
- // don't exceed the limit of the index buffer
- fMaxVertices = maxQuadVertices;
- }
- bool success = fDrawTarget->reserveVertexAndIndexSpace(fMaxVertices,
- 0,
- GrTCast<void**>(&fVertices),
- NULL);
- GrAlwaysAssert(success);
- SkASSERT(2*sizeof(SkPoint) == fDrawTarget->getDrawState().getVertexSize());
- }
-
SkScalar dx = SkIntToScalar(glyph->fBounds.fLeft + SK_DistanceFieldInset);
SkScalar dy = SkIntToScalar(glyph->fBounds.fTop + SK_DistanceFieldInset);
SkScalar width = SkIntToScalar(glyph->fBounds.width() - 2*SK_DistanceFieldInset);
@@ -343,12 +295,16 @@
SkFixed th = SkIntToFixed(glyph->fBounds.height() - 2*SK_DistanceFieldInset);
static const size_t kVertexSize = 2 * sizeof(SkPoint);
- fVertices[2*fCurrVertex].setRectFan(sx,
- sy,
- sx + width,
- sy + height,
- kVertexSize);
- fVertices[2*fCurrVertex+1].setRectFan(SkFixedToFloat(texture->normalizeFixedX(tx)),
+ SkPoint* positions = reinterpret_cast<SkPoint*>(
+ reinterpret_cast<intptr_t>(fVertices) + kVertexSize * fCurrVertex);
+ positions->setRectFan(sx,
+ sy,
+ sx + width,
+ sy + height,
+ kVertexSize);
+ SkPoint* textureCoords = reinterpret_cast<SkPoint*>(
+ reinterpret_cast<intptr_t>(positions) + kVertexSize - sizeof(SkPoint));
+ textureCoords->setRectFan(SkFixedToFloat(texture->normalizeFixedX(tx)),
SkFixedToFloat(texture->normalizeFixedY(ty)),
SkFixedToFloat(texture->normalizeFixedX(tx + tw)),
SkFixedToFloat(texture->normalizeFixedY(ty + th)),
@@ -361,11 +317,9 @@
fStrike = NULL;
- fCurrTexture = NULL;
fCurrVertex = 0;
fVertices = NULL;
- fMaxVertices = 0;
if (fSkPaint.getTextSize() <= kSmallDFFontLimit) {
fTextRatio = fSkPaint.getTextSize()/kSmallDFFontSize;
@@ -446,6 +400,10 @@
this->init(paint, skPaint);
+ if (NULL == fDrawTarget) {
+ return;
+ }
+
SkScalar sizeRatio = fTextRatio;
SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc();
@@ -453,9 +411,23 @@
SkAutoGlyphCacheNoGamma autoCache(fSkPaint, &fDeviceProperties, NULL);
SkGlyphCache* cache = autoCache.getCache();
GrFontScaler* fontScaler = GetGrFontScaler(cache);
+ if (NULL == fStrike) {
+ fStrike = fContext->getFontCache()->getStrike(fontScaler, true);
+ }
setup_gamma_texture(fContext, cache, fDeviceProperties, &fGammaTexture);
+ // allocate vertices
+ SkASSERT(NULL == fVertices);
+ fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
+ SK_ARRAY_COUNT(gTextVertexAttribs));
+ int numGlyphs = fSkPaint.textToGlyphs(text, byteLength, NULL);
+ bool success = fDrawTarget->reserveVertexAndIndexSpace(4*numGlyphs,
+ 0,
+ &fVertices,
+ NULL);
+ GrAlwaysAssert(success);
+
// need to measure first
// TODO - generate positions and pre-load cache as well?
const char* stop = text + byteLength;
@@ -523,11 +495,29 @@
this->init(paint, skPaint);
+ if (NULL == fDrawTarget) {
+ return;
+ }
+
SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc();
SkAutoGlyphCacheNoGamma autoCache(fSkPaint, &fDeviceProperties, NULL);
SkGlyphCache* cache = autoCache.getCache();
GrFontScaler* fontScaler = GetGrFontScaler(cache);
+ if (NULL == fStrike) {
+ fStrike = fContext->getFontCache()->getStrike(fontScaler, true);
+ }
+
+ // allocate vertices
+ SkASSERT(NULL == fVertices);
+ fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
+ SK_ARRAY_COUNT(gTextVertexAttribs));
+ int numGlyphs = fSkPaint.textToGlyphs(text, byteLength, NULL);
+ bool success = fDrawTarget->reserveVertexAndIndexSpace(4*numGlyphs,
+ 0,
+ &fVertices,
+ NULL);
+ GrAlwaysAssert(success);
setup_gamma_texture(fContext, cache, fDeviceProperties, &fGammaTexture);