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174 lines
5.6 KiB
Diff
174 lines
5.6 KiB
Diff
changeset: 42954:7881873b2b5d
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user: Robert O'Callahan <robert@ocallahan.org>
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date: Tue Jun 01 11:19:45 2010 +1200
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summary: Bug 552537. Cache the CGImageRef that we create for a CGBitmapContext so that we can take advantage of Quartz caching optimizations. r=jrmuizel
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diff --git a/gfx/cairo/cairo/src/cairo-quartz-private.h b/gfx/cairo/cairo/src/cairo-quartz-private.h
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--- a/gfx/cairo/cairo/src/cairo-quartz-private.h
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+++ b/gfx/cairo/cairo/src/cairo-quartz-private.h
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@@ -49,16 +49,24 @@ typedef struct cairo_quartz_surface {
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CGContextRef cgContext;
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CGAffineTransform cgContextBaseCTM;
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void *imageData;
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cairo_surface_t *imageSurfaceEquiv;
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cairo_surface_clipper_t clipper;
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+
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+ /**
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+ * If non-null, this is a CGImage representing the contents of the surface.
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+ * We clear this out before any painting into the surface, so that we
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+ * don't force a copy to be created.
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+ */
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+ CGImageRef bitmapContextImage;
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+
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cairo_rectangle_int_t extents;
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} cairo_quartz_surface_t;
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typedef struct cairo_quartz_image_surface {
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cairo_surface_t base;
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cairo_rectangle_int_t extents;
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diff --git a/gfx/cairo/cairo/src/cairo-quartz-surface.c b/gfx/cairo/cairo/src/cairo-quartz-surface.c
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--- a/gfx/cairo/cairo/src/cairo-quartz-surface.c
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+++ b/gfx/cairo/cairo/src/cairo-quartz-surface.c
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@@ -1134,19 +1134,24 @@ _cairo_surface_to_cgimage (cairo_surface
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if (stype == CAIRO_SURFACE_TYPE_QUARTZ) {
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cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) source;
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if (IS_EMPTY(surface)) {
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*image_out = NULL;
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return CAIRO_STATUS_SUCCESS;
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}
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if (_cairo_quartz_is_cgcontext_bitmap_context (surface->cgContext)) {
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- *image_out = CGBitmapContextCreateImage (surface->cgContext);
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- if (*image_out)
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- return CAIRO_STATUS_SUCCESS;
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+ if (!surface->bitmapContextImage) {
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+ surface->bitmapContextImage =
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+ CGBitmapContextCreateImage (surface->cgContext);
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+ }
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+ if (surface->bitmapContextImage) {
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+ *image_out = CGImageRetain (surface->bitmapContextImage);
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+ return CAIRO_STATUS_SUCCESS;
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+ }
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}
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}
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if (stype != CAIRO_SURFACE_TYPE_IMAGE) {
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status = _cairo_surface_acquire_source_image (source,
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&isurf, &image_extra);
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if (status)
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return status;
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@@ -1589,16 +1594,29 @@ _cairo_quartz_setup_radial_source (cairo
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CGColorSpaceRelease(rgb);
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CGFunctionRelease(gradFunc);
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state->action = DO_SHADING;
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}
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/**
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+ * Call this before any operation that can modify the contents of a
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+ * cairo_quartz_surface_t.
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+ */
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+static void
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+_cairo_quartz_surface_will_change (cairo_quartz_surface_t *surface)
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+{
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+ if (surface->bitmapContextImage) {
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+ CGImageRelease (surface->bitmapContextImage);
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+ surface->bitmapContextImage = NULL;
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+ }
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+}
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+
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+/**
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* Sets up internal state to be used to draw the source mask, stored in
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* cairo_quartz_state_t. Guarantees to call CGContextSaveGState on
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* surface->cgContext.
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*/
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static cairo_quartz_drawing_state_t
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_cairo_quartz_setup_state (cairo_quartz_surface_t *surface,
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const cairo_pattern_t *source,
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cairo_operator_t op,
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@@ -1609,16 +1627,18 @@ _cairo_quartz_setup_state (cairo_quartz_
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cairo_status_t status;
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state.context = context;
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state.image = NULL;
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state.imageSurface = NULL;
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state.shading = NULL;
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state.pattern = NULL;
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+ _cairo_quartz_surface_will_change (surface);
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+
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// Save before we change the pattern, colorspace, etc. so that
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// we can restore and make sure that quartz releases our
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// pattern (which may be stack allocated)
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CGContextSaveGState(context);
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CGContextSetInterpolationQuality (context, _cairo_quartz_filter_to_quartz (source->filter));
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status = _cairo_quartz_surface_set_cairo_operator (surface, op);
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@@ -1936,16 +1956,21 @@ _cairo_quartz_surface_finish (void *abst
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/* Restore our saved gstate that we use to reset clipping */
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CGContextRestoreGState (surface->cgContext);
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_cairo_surface_clipper_reset (&surface->clipper);
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CGContextRelease (surface->cgContext);
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surface->cgContext = NULL;
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+ if (surface->bitmapContextImage) {
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+ CGImageRelease (surface->bitmapContextImage);
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+ surface->bitmapContextImage = NULL;
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+ }
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+
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if (surface->imageSurfaceEquiv) {
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cairo_surface_destroy (surface->imageSurfaceEquiv);
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surface->imageSurfaceEquiv = NULL;
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}
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if (surface->imageData) {
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free (surface->imageData);
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surface->imageData = NULL;
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@@ -2006,16 +2031,18 @@ _cairo_quartz_surface_acquire_dest_image
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cairo_rectangle_int_t *image_rect,
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void **image_extra)
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{
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cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
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cairo_int_status_t status;
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ND((stderr, "%p _cairo_quartz_surface_acquire_dest_image\n", surface));
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+ _cairo_quartz_surface_will_change (surface);
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+
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status = _cairo_quartz_get_image (surface, image_out);
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if (status)
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return _cairo_error (CAIRO_STATUS_NO_MEMORY);
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*image_rect = surface->extents;
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*image_extra = NULL;
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return CAIRO_STATUS_SUCCESS;
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@@ -2939,16 +2966,17 @@ _cairo_quartz_surface_create_internal (C
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*/
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CGContextSaveGState (cgContext);
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surface->cgContext = cgContext;
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surface->cgContextBaseCTM = CGContextGetCTM (cgContext);
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surface->imageData = NULL;
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surface->imageSurfaceEquiv = NULL;
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+ surface->bitmapContextImage = NULL;
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return surface;
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}
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/**
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* cairo_quartz_surface_create_for_cg_context
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* @cgContext: the existing CGContext for which to create the surface
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* @width: width of the surface, in pixels
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