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-rw-r--r--src/cairo-deprecated.h14
-rw-r--r--src/cairo-image-surface.c16
-rw-r--r--src/cairo-xlib-display.c28
-rw-r--r--src/cairo.h7
-rw-r--r--src/cairoint.h2
5 files changed, 43 insertions, 24 deletions
diff --git a/src/cairo-deprecated.h b/src/cairo-deprecated.h
index 6397cc42..e1f25bf2 100644
--- a/src/cairo-deprecated.h
+++ b/src/cairo-deprecated.h
@@ -36,20 +36,6 @@
#ifndef CAIRO_DEPRECATED_H
#define CAIRO_DEPRECATED_H
-/* The %CAIRO_FORMAT_RGB16_565 value was added in cairo 1.2.0 as part
- * of fixing cairo's xlib backend to work with X servers advertising a
- * 16-bit, 565 visual. But as it turned out, adding this format to
- * #cairo_format_t was not necessary, and was a mistake, (cairo's xlib
- * backend can work fine with 16-bit visuals in the same way it works
- * with BGR visuals without any BGR formats in
- * #cairo_format_t).
- *
- * Additionally, the support for the RGB16_565 format was never
- * completely implemented. So while this format value is currently
- * deprecated, it may eventually acquire complete support in the future.
- */
-#define CAIRO_FORMAT_RGB16_565 4
-
#define CAIRO_FONT_TYPE_ATSUI CAIRO_FONT_TYPE_QUARTZ
/* Obsolete functions. These definitions exist to coerce the compiler
diff --git a/src/cairo-image-surface.c b/src/cairo-image-surface.c
index 099cacfd..9b238005 100644
--- a/src/cairo-image-surface.c
+++ b/src/cairo-image-surface.c
@@ -86,8 +86,10 @@ _cairo_format_from_pixman_format (pixman_format_code_t pixman_format)
return CAIRO_FORMAT_A8;
case PIXMAN_a1:
return CAIRO_FORMAT_A1;
+ case PIXMAN_r5g6b5:
+ return CAIRO_FORMAT_RGB16_565;
case PIXMAN_a8b8g8r8: case PIXMAN_x8b8g8r8: case PIXMAN_r8g8b8:
- case PIXMAN_b8g8r8: case PIXMAN_r5g6b5: case PIXMAN_b5g6r5:
+ case PIXMAN_b8g8r8: case PIXMAN_b5g6r5:
case PIXMAN_a1r5g5b5: case PIXMAN_x1r5g5b5: case PIXMAN_a1b5g5r5:
case PIXMAN_x1b5g5r5: case PIXMAN_a4r4g4b4: case PIXMAN_x4r4g4b4:
case PIXMAN_a4b4g4r4: case PIXMAN_x4b4g4r4: case PIXMAN_r3g3b2:
@@ -276,6 +278,9 @@ _cairo_format_to_pixman_format_code (cairo_format_t format)
case CAIRO_FORMAT_RGB24:
ret = PIXMAN_x8r8g8b8;
break;
+ case CAIRO_FORMAT_RGB16_565:
+ ret = PIXMAN_r5g6b5;
+ break;
case CAIRO_FORMAT_ARGB32:
case CAIRO_FORMAT_INVALID:
default:
@@ -638,6 +643,8 @@ _cairo_content_from_format (cairo_format_t format)
return CAIRO_CONTENT_COLOR_ALPHA;
case CAIRO_FORMAT_RGB24:
return CAIRO_CONTENT_COLOR;
+ case CAIRO_FORMAT_RGB16_565:
+ return CAIRO_CONTENT_COLOR;
case CAIRO_FORMAT_A8:
case CAIRO_FORMAT_A1:
return CAIRO_CONTENT_ALPHA;
@@ -657,6 +664,8 @@ _cairo_format_bits_per_pixel (cairo_format_t format)
return 32;
case CAIRO_FORMAT_RGB24:
return 32;
+ case CAIRO_FORMAT_RGB16_565:
+ return 16;
case CAIRO_FORMAT_A8:
return 8;
case CAIRO_FORMAT_A1:
@@ -4426,6 +4435,11 @@ _cairo_image_analyze_transparency (cairo_image_surface_t *image)
return image->transparency = CAIRO_IMAGE_HAS_ALPHA;
}
+ if (image->format == CAIRO_FORMAT_RGB16_565) {
+ image->transparency = CAIRO_IMAGE_IS_OPAQUE;
+ return CAIRO_IMAGE_IS_OPAQUE;
+ }
+
if (image->format != CAIRO_FORMAT_ARGB32)
return image->transparency = CAIRO_IMAGE_HAS_ALPHA;
diff --git a/src/cairo-xlib-display.c b/src/cairo-xlib-display.c
index f9b9617f..69b7c66b 100644
--- a/src/cairo-xlib-display.c
+++ b/src/cairo-xlib-display.c
@@ -53,7 +53,7 @@ struct _cairo_xlib_display {
int render_major;
int render_minor;
- XRenderPictFormat *cached_xrender_formats[CAIRO_FORMAT_A1 + 1];
+ XRenderPictFormat *cached_xrender_formats[CAIRO_FORMAT_RGB16_565 + 1];
cairo_xlib_job_t *workqueue;
cairo_freelist_t wq_freelist;
@@ -591,14 +591,36 @@ _cairo_xlib_display_get_xrender_format (cairo_xlib_display_t *display,
pict_format = PictStandardA8; break;
case CAIRO_FORMAT_RGB24:
pict_format = PictStandardRGB24; break;
+ case CAIRO_FORMAT_RGB16_565: {
+ Visual *visual = NULL;
+ Screen *screen = DefaultScreenOfDisplay(display->display);
+ int j;
+ for (j = 0; j < screen->ndepths; j++) {
+ Depth *d = &screen->depths[j];
+ if (d->depth == 16 && d->nvisuals && &d->visuals[0]) {
+ if (d->visuals[0].red_mask == 0xf800 &&
+ d->visuals[0].green_mask == 0x7e0 &&
+ d->visuals[0].blue_mask == 0x1f)
+ visual = &d->visuals[0];
+ break;
+ }
+ }
+ if (!visual) {
+ CAIRO_MUTEX_UNLOCK (display->mutex);
+ return NULL;
+ }
+ xrender_format = XRenderFindVisualFormat(display->display, visual);
+ break;
+ }
case CAIRO_FORMAT_INVALID:
default:
ASSERT_NOT_REACHED;
case CAIRO_FORMAT_ARGB32:
pict_format = PictStandardARGB32; break;
}
- xrender_format = XRenderFindStandardFormat (display->display,
- pict_format);
+ if (!xrender_format)
+ xrender_format = XRenderFindStandardFormat (display->display,
+ pict_format);
display->cached_xrender_formats[format] = xrender_format;
}
CAIRO_MUTEX_UNLOCK (display->mutex);
diff --git a/src/cairo.h b/src/cairo.h
index feb564ad..6c4faea1 100644
--- a/src/cairo.h
+++ b/src/cairo.h
@@ -2277,11 +2277,8 @@ typedef enum _cairo_format {
CAIRO_FORMAT_ARGB32 = 0,
CAIRO_FORMAT_RGB24 = 1,
CAIRO_FORMAT_A8 = 2,
- CAIRO_FORMAT_A1 = 3
- /* The value of 4 is reserved by a deprecated enum value.
- * The next format added must have an explicit value of 5.
- CAIRO_FORMAT_RGB16_565 = 4,
- */
+ CAIRO_FORMAT_A1 = 3,
+ CAIRO_FORMAT_RGB16_565 = 4
} cairo_format_t;
cairo_public cairo_surface_t *
diff --git a/src/cairoint.h b/src/cairoint.h
index 741ccf36..f39b9a18 100644
--- a/src/cairoint.h
+++ b/src/cairoint.h
@@ -2149,7 +2149,7 @@ _cairo_surface_has_device_transform (cairo_surface_t *surface) cairo_pure;
* in cairo-xlib-surface.c--again see -Wswitch-enum).
*/
#define CAIRO_FORMAT_VALID(format) ((format) >= CAIRO_FORMAT_ARGB32 && \
- (format) <= CAIRO_FORMAT_A1)
+ (format) <= CAIRO_FORMAT_RGB16_565)
/* pixman-required stride alignment in bytes. */
#define CAIRO_STRIDE_ALIGNMENT (sizeof (uint32_t))
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 18:52:54 +0000