void SkGraphics::Init() {
SkGlobals::Init();
#ifdef BUILD_EMBOSS_TABLE
SkEmbossMask_BuildTable();
#endif
#ifdef BUILD_RADIALGRADIENT_TABLE
SkRadialGradient_BuildTable();
#endif
#ifdef SK_DEBUGx
int i;
static const struct {
const char* fTypeName;
size_t fSizeOf;
} gTypeSize[] = {
typesizeline(char),
typesizeline(short),
typesizeline(int),
typesizeline(long),
typesizeline(size_t),
typesizeline(void*),
typesizeline(S8CPU),
typesizeline(U8CPU),
typesizeline(S16CPU),
typesizeline(U16CPU),
typesizeline(SkPoint),
typesizeline(SkRect),
typesizeline(SkMatrix),
typesizeline(SkPath),
typesizeline(SkGlyph),
typesizeline(SkRefCnt),
typesizeline(SkPaint),
typesizeline(SkCanvas),
typesizeline(SkBlitter),
typesizeline(SkShader),
typesizeline(SkXfermode),
typesizeline(SkPathEffect)
};
#ifdef SK_CPU_BENDIAN
SkDebugf("SkGraphics: big-endian\n");
#else
SkDebugf("SkGraphics: little-endian\n");
#endif
{
char test = 0xFF;
int itest = test; // promote to int, see if it sign-extended
if (itest < 0)
SkDebugf("SkGraphics: char is signed\n");
else
SkDebugf("SkGraphics: char is unsigned\n");
}
for (i = 0; i < (int)SK_ARRAY_COUNT(gTypeSize); i++) {
SkDebugf("SkGraphics: sizeof(%s) = %d\n",
gTypeSize[i].fTypeName, gTypeSize[i].fSizeOf);
}
#endif
if (false) // test asm fixmul
{
int j;
SkMSec now = SkTime::GetMSecs();
for (j = 0; j < BIG_LOOP_COUNT; j++) {
(void)SkFixedMul_portable(0x8000, 0x150000);
}
SkMSec now2 = SkTime::GetMSecs();
printf("-------- SkFixedMul_portable = %d\n", now2 - now);
for (j = 0; j < BIG_LOOP_COUNT; j++) {
(void)SkFixedMul(0x8000, 0x150000);
}
printf("-------- SkFixedMul = %d\n", SkTime::GetMSecs() - now2);
SkRandom rand;
for (j = 0; j < 10000; j++) {
SkFixed a = rand.nextS() >> 8;
SkFixed b = rand.nextS() >> 8;
SkFixed c1 = SkFixedMul_portable(a, b);
SkFixed c2 = SkFixedMul(a, b);
if (SkAbs32(c1 - c2) > 1)
printf("------ FixMul disagreement: (%x %x) slow=%x fast=%x\n", a, b, c1, c2);
}
}
void GrDistanceFieldTextContext::onDrawText(GrRenderTarget* rt, const GrClip& clip,
const GrPaint& paint,
const SkPaint& skPaint, const SkMatrix& viewMatrix,
const char text[], size_t byteLength,
SkScalar x, SkScalar y) {
SkASSERT(byteLength == 0 || text != NULL);
// nothing to draw
if (text == NULL || byteLength == 0) {
return;
}
fViewMatrix = viewMatrix;
SkDrawCacheProc glyphCacheProc = skPaint.getDrawCacheProc();
SkAutoGlyphCache autoCache(skPaint, &fDeviceProperties, NULL);
SkGlyphCache* cache = autoCache.getCache();
SkTArray<SkScalar> positions;
const char* textPtr = text;
SkFixed stopX = 0;
SkFixed stopY = 0;
SkFixed origin;
switch (skPaint.getTextAlign()) {
case SkPaint::kRight_Align: origin = SK_Fixed1; break;
case SkPaint::kCenter_Align: origin = SK_FixedHalf; break;
case SkPaint::kLeft_Align: origin = 0; break;
default: SkFAIL("Invalid paint origin"); return;
}
SkAutoKern autokern;
const char* stop = text + byteLength;
while (textPtr < stop) {
// don't need x, y here, since all subpixel variants will have the
// same advance
const SkGlyph& glyph = glyphCacheProc(cache, &textPtr, 0, 0);
SkFixed width = glyph.fAdvanceX + autokern.adjust(glyph);
positions.push_back(SkFixedToScalar(stopX + SkFixedMul_portable(origin, width)));
SkFixed height = glyph.fAdvanceY;
positions.push_back(SkFixedToScalar(stopY + SkFixedMul_portable(origin, height)));
stopX += width;
stopY += height;
}
SkASSERT(textPtr == stop);
// now adjust starting point depending on alignment
SkScalar alignX = SkFixedToScalar(stopX);
SkScalar alignY = SkFixedToScalar(stopY);
if (skPaint.getTextAlign() == SkPaint::kCenter_Align) {
alignX = SkScalarHalf(alignX);
alignY = SkScalarHalf(alignY);
} else if (skPaint.getTextAlign() == SkPaint::kLeft_Align) {
alignX = 0;
alignY = 0;
}
x -= alignX;
y -= alignY;
SkPoint offset = SkPoint::Make(x, y);
this->drawPosText(rt, clip, paint, skPaint, viewMatrix, text, byteLength, positions.begin(), 2,
offset);
}
void GrStencilAndCoverTextContext::drawText(const GrPaint& paint,
const SkPaint& skPaint,
const char text[],
size_t byteLength,
SkScalar x, SkScalar y) {
SkASSERT(byteLength == 0 || text != NULL);
if (text == NULL || byteLength == 0 /*|| fRC->isEmpty()*/) {
return;
}
// This is the slow path, mainly used by Skia unit tests. The other
// backends (8888, gpu, ...) use device-space dependent glyph caches. In
// order to match the glyph positions that the other code paths produce, we
// must also use device-space dependent glyph cache. This has the
// side-effect that the glyph shape outline will be in device-space,
// too. This in turn has the side-effect that NVPR can not stroke the paths,
// as the stroke in NVPR is defined in object-space.
// NOTE: here we have following coincidence that works at the moment:
// - When using the device-space glyphs, the transforms we pass to NVPR
// instanced drawing are the global transforms, and the view transform is
// identity. NVPR can not use non-affine transforms in the instanced
// drawing. This is taken care of by SkDraw::ShouldDrawTextAsPaths since it
// will turn off the use of device-space glyphs when perspective transforms
// are in use.
this->init(paint, skPaint, byteLength, kMaxAccuracy_RenderMode);
// Transform our starting point.
if (fNeedsDeviceSpaceGlyphs) {
SkPoint loc;
fContextInitialMatrix.mapXY(x, y, &loc);
x = loc.fX;
y = loc.fY;
}
SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc();
fTransformType = GrPathRendering::kTranslate_PathTransformType;
const char* stop = text + byteLength;
// Measure first if needed.
if (fSkPaint.getTextAlign() != SkPaint::kLeft_Align) {
SkFixed stopX = 0;
SkFixed stopY = 0;
const char* textPtr = text;
while (textPtr < stop) {
// We don't need x, y here, since all subpixel variants will have the
// same advance.
const SkGlyph& glyph = glyphCacheProc(fGlyphCache, &textPtr, 0, 0);
stopX += glyph.fAdvanceX;
stopY += glyph.fAdvanceY;
}
SkASSERT(textPtr == stop);
SkScalar alignX = SkFixedToScalar(stopX) * fTextRatio;
SkScalar alignY = SkFixedToScalar(stopY) * fTextRatio;
if (fSkPaint.getTextAlign() == SkPaint::kCenter_Align) {
alignX = SkScalarHalf(alignX);
alignY = SkScalarHalf(alignY);
}
x -= alignX;
y -= alignY;
}
SkAutoKern autokern;
SkFixed fixedSizeRatio = SkScalarToFixed(fTextRatio);
SkFixed fx = SkScalarToFixed(x);
SkFixed fy = SkScalarToFixed(y);
while (text < stop) {
const SkGlyph& glyph = glyphCacheProc(fGlyphCache, &text, 0, 0);
fx += SkFixedMul_portable(autokern.adjust(glyph), fixedSizeRatio);
if (glyph.fWidth) {
this->appendGlyph(glyph.getGlyphID(), SkFixedToScalar(fx), SkFixedToScalar(fy));
}
fx += SkFixedMul_portable(glyph.fAdvanceX, fixedSizeRatio);
fy += SkFixedMul_portable(glyph.fAdvanceY, fixedSizeRatio);
}
this->finish();
}
