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-rw-r--r--libre/iceweasel/clip-ft-glyph.diff162
1 files changed, 0 insertions, 162 deletions
diff --git a/libre/iceweasel/clip-ft-glyph.diff b/libre/iceweasel/clip-ft-glyph.diff
deleted file mode 100644
index 4ca703504..000000000
--- a/libre/iceweasel/clip-ft-glyph.diff
+++ /dev/null
@@ -1,162 +0,0 @@
-# HG changeset patch
-# User Lee Salzman <lsalzman@mozilla.com>
-# Date 1504120456 14400
-# Wed Aug 30 15:14:16 2017 -0400
-# Node ID 708d52f954b6d7ca2497fcb5b5084c6483300e89
-# Parent 33224536ce20d942576cd4b9ffb350d6dce397bc
-clip FreeType glyph bitmap to mask in Skia
-
-MozReview-Commit-ID: 9NqLj9SkHFo
-
-diff --git a/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp b/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp
---- a/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp
-+++ b/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp
-@@ -390,65 +390,131 @@ void SkScalerContext_FreeType_Base::gene
- const SkMatrix& bitmapTransform)
- {
- const bool doBGR = SkToBool(fRec.fFlags & SkScalerContext::kLCD_BGROrder_Flag);
- const bool doVert = SkToBool(fRec.fFlags & SkScalerContext::kLCD_Vertical_Flag);
-
- switch ( face->glyph->format ) {
- case FT_GLYPH_FORMAT_OUTLINE: {
- FT_Outline* outline = &face->glyph->outline;
-- FT_BBox bbox;
-- FT_Bitmap target;
-
- int dx = 0, dy = 0;
- if (fRec.fFlags & SkScalerContext::kSubpixelPositioning_Flag) {
- dx = SkFixedToFDot6(glyph.getSubXFixed());
- dy = SkFixedToFDot6(glyph.getSubYFixed());
- // negate dy since freetype-y-goes-up and skia-y-goes-down
- dy = -dy;
- }
-- FT_Outline_Get_CBox(outline, &bbox);
-- /*
-- what we really want to do for subpixel is
-- offset(dx, dy)
-- compute_bounds
-- offset(bbox & !63)
-- but that is two calls to offset, so we do the following, which
-- achieves the same thing with only one offset call.
-- */
-- FT_Outline_Translate(outline, dx - ((bbox.xMin + dx) & ~63),
-- dy - ((bbox.yMin + dy) & ~63));
-+
-+ memset(glyph.fImage, 0, glyph.rowBytes() * glyph.fHeight);
-
- if (SkMask::kLCD16_Format == glyph.fMaskFormat) {
-+ FT_Outline_Translate(outline, dx, dy);
- FT_Error err = FT_Render_Glyph(face->glyph, doVert ? FT_RENDER_MODE_LCD_V :
- FT_RENDER_MODE_LCD);
- if (err) {
- SK_TRACEFTR(err, "Could not render glyph.");
-- sk_bzero(glyph.fImage, glyph.computeImageSize());
- return;
- }
-+
- SkMask mask;
- glyph.toMask(&mask);
-+#ifdef SK_SHOW_TEXT_BLIT_COVERAGE
-+ memset(mask.fImage, 0x80, mask.fBounds.height() * mask.fRowBytes);
-+#endif
-+ FT_GlyphSlotRec& ftGlyph = *face->glyph;
-+
-+ if (!SkIRect::Intersects(mask.fBounds,
-+ SkIRect::MakeXYWH( ftGlyph.bitmap_left,
-+ -ftGlyph.bitmap_top,
-+ ftGlyph.bitmap.width,
-+ ftGlyph.bitmap.rows)))
-+ {
-+ return;
-+ }
-+
-+ // If the FT_Bitmap extent is larger, discard bits of the bitmap outside the mask.
-+ // If the SkMask extent is larger, shrink mask to fit bitmap (clearing discarded).
-+ unsigned char* origBuffer = ftGlyph.bitmap.buffer;
-+ // First align the top left (origin).
-+ if (-ftGlyph.bitmap_top < mask.fBounds.fTop) {
-+ int32_t topDiff = mask.fBounds.fTop - (-ftGlyph.bitmap_top);
-+ ftGlyph.bitmap.buffer += ftGlyph.bitmap.pitch * topDiff;
-+ ftGlyph.bitmap.rows -= topDiff;
-+ ftGlyph.bitmap_top = -mask.fBounds.fTop;
-+ }
-+ if (ftGlyph.bitmap_left < mask.fBounds.fLeft) {
-+ int32_t leftDiff = mask.fBounds.fLeft - ftGlyph.bitmap_left;
-+ ftGlyph.bitmap.buffer += leftDiff;
-+ ftGlyph.bitmap.width -= leftDiff;
-+ ftGlyph.bitmap_left = mask.fBounds.fLeft;
-+ }
-+ if (mask.fBounds.fTop < -ftGlyph.bitmap_top) {
-+ mask.fImage += mask.fRowBytes * (-ftGlyph.bitmap_top - mask.fBounds.fTop);
-+ mask.fBounds.fTop = -ftGlyph.bitmap_top;
-+ }
-+ if (mask.fBounds.fLeft < ftGlyph.bitmap_left) {
-+ mask.fImage += sizeof(uint16_t) * (ftGlyph.bitmap_left - mask.fBounds.fLeft);
-+ mask.fBounds.fLeft = ftGlyph.bitmap_left;
-+ }
-+ // Origins aligned, clean up the width and height.
-+ int ftVertScale = (doVert ? 3 : 1);
-+ int ftHoriScale = (doVert ? 1 : 3);
-+ if (mask.fBounds.height() * ftVertScale < SkToInt(ftGlyph.bitmap.rows)) {
-+ ftGlyph.bitmap.rows = mask.fBounds.height() * ftVertScale;
-+ }
-+ if (mask.fBounds.width() * ftHoriScale < SkToInt(ftGlyph.bitmap.width)) {
-+ ftGlyph.bitmap.width = mask.fBounds.width() * ftHoriScale;
-+ }
-+ if (SkToInt(ftGlyph.bitmap.rows) < mask.fBounds.height() * ftVertScale) {
-+ mask.fBounds.fBottom = mask.fBounds.fTop + ftGlyph.bitmap.rows / ftVertScale;
-+ }
-+ if (SkToInt(ftGlyph.bitmap.width) < mask.fBounds.width() * ftHoriScale) {
-+ mask.fBounds.fRight = mask.fBounds.fLeft + ftGlyph.bitmap.width / ftHoriScale;
-+ }
- if (fPreBlend.isApplicable()) {
-- copyFT2LCD16<true>(face->glyph->bitmap, mask, doBGR,
-+ copyFT2LCD16<true>(ftGlyph.bitmap, mask, doBGR,
- fPreBlend.fR, fPreBlend.fG, fPreBlend.fB);
- } else {
-- copyFT2LCD16<false>(face->glyph->bitmap, mask, doBGR,
-+ copyFT2LCD16<false>(ftGlyph.bitmap, mask, doBGR,
- fPreBlend.fR, fPreBlend.fG, fPreBlend.fB);
- }
-+ // Restore the buffer pointer so FreeType can properly free it.
-+ ftGlyph.bitmap.buffer = origBuffer;
- } else {
-+ FT_BBox bbox;
-+ FT_Bitmap target;
-+ FT_Outline_Get_CBox(outline, &bbox);
-+ /*
-+ what we really want to do for subpixel is
-+ offset(dx, dy)
-+ compute_bounds
-+ offset(bbox & !63)
-+ but that is two calls to offset, so we do the following, which
-+ achieves the same thing with only one offset call.
-+ */
-+ FT_Outline_Translate(outline, dx - ((bbox.xMin + dx) & ~63),
-+ dy - ((bbox.yMin + dy) & ~63));
-+
- target.width = glyph.fWidth;
- target.rows = glyph.fHeight;
- target.pitch = glyph.rowBytes();
- target.buffer = reinterpret_cast<uint8_t*>(glyph.fImage);
- target.pixel_mode = compute_pixel_mode( (SkMask::Format)fRec.fMaskFormat);
- target.num_grays = 256;
-
-- memset(glyph.fImage, 0, glyph.rowBytes() * glyph.fHeight);
- FT_Outline_Get_Bitmap(face->glyph->library, outline, &target);
-+#ifdef SK_SHOW_TEXT_BLIT_COVERAGE
-+ for (int y = 0; y < glyph.fHeight; ++y) {
-+ for (int x = 0; x < glyph.fWidth; ++x) {
-+ uint8_t& a = ((uint8_t*)glyph.fImage)[(glyph.rowBytes() * y) + x];
-+ a = SkTMax<uint8_t>(a, 0x20);
-+ }
-+ }
-+#endif
- }
- } break;
-
- case FT_GLYPH_FORMAT_BITMAP: {
- FT_Pixel_Mode pixel_mode = static_cast<FT_Pixel_Mode>(face->glyph->bitmap.pixel_mode);
- SkMask::Format maskFormat = static_cast<SkMask::Format>(glyph.fMaskFormat);
-
- // Assume that the other formats do not exist.
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