[PATCH 2/2] Update test suite for downscaling.

The test case used for downscaling showed very similar results regardless
of the used filter. The new test case contains thin horizontal and vertical
lines which give significantly different results depending on the filter.

Since downscaling provides some anti-aliasing, the result for the test
surface-pattern-scale-down was also updated.

Signed-off-by: Krzysztof Kosiński <[email protected]>
---
 test/pixman-downscale.c                            |   2 +-
 test/quad-color-stripes.png                        | Bin 0 -> 696 bytes
 test/quad-color-stripes.svg                        | 247 +++++++++++++++++++++
 test/reference/pixman-downscale-best-24.ref.png    | Bin 191 -> 957 bytes
 test/reference/pixman-downscale-best-95.ref.png    | Bin 685 -> 3845 bytes
 test/reference/pixman-downscale-best-96.ref.png    | Bin 301 -> 627 bytes
 .../reference/pixman-downscale-bilinear-24.ref.png | Bin 191 -> 428 bytes
 .../reference/pixman-downscale-bilinear-95.ref.png | Bin 685 -> 1635 bytes
 .../reference/pixman-downscale-bilinear-96.ref.png | Bin 301 -> 627 bytes
 test/reference/pixman-downscale-fast-24.ref.png    | Bin 191 -> 179 bytes
 test/reference/pixman-downscale-fast-95.ref.png    | Bin 299 -> 618 bytes
 test/reference/pixman-downscale-fast-96.ref.png    | Bin 301 -> 627 bytes
 test/reference/pixman-downscale-good-24.ref.png    | Bin 191 -> 428 bytes
 test/reference/pixman-downscale-good-95.ref.png    | Bin 685 -> 1635 bytes
 test/reference/pixman-downscale-good-96.ref.png    | Bin 301 -> 627 bytes
 test/reference/pixman-downscale-nearest-24.ref.png | Bin 191 -> 179 bytes
 test/reference/pixman-downscale-nearest-95.ref.png | Bin 299 -> 618 bytes
 test/reference/pixman-downscale-nearest-96.ref.png | Bin 301 -> 627 bytes
 .../surface-pattern-scale-down.argb32.ref.png      | Bin 1326 -> 1713 bytes
 .../surface-pattern-scale-down.rgb24.ref.png       | Bin 1326 -> 1713 bytes
 20 files changed, 248 insertions(+), 1 deletion(-)
 create mode 100644 test/quad-color-stripes.png
 create mode 100644 test/quad-color-stripes.svg

diff --git a/test/pixman-downscale.c b/test/pixman-downscale.c
index a57db02..273b60a 100644
--- a/test/pixman-downscale.c
+++ b/test/pixman-downscale.c
@@ -36,7 +36,7 @@
 
 #include "cairo-test.h"
 
-static const char png_filename[] = "quad-color.png";
+static const char png_filename[] = "quad-color-stripes.png";
 
 /* Draw an image scaled down, with antialiasing disabled */
 static cairo_test_status_t
diff --git a/test/quad-color-stripes.png b/test/quad-color-stripes.png
new file mode 100644
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diff --git a/test/quad-color-stripes.svg b/test/quad-color-stripes.svg
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diff --git a/test/reference/pixman-downscale-bilinear-95.ref.png b/test/reference/pixman-downscale-bilinear-95.ref.png
index 49011d526a05317a18f203e98b45c24cad6cdf69..f4f04af45a85f4923c49481b999ad6fe421aa2a2 100644
GIT binary patch
delta 1613
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literal 685
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diff --git a/test/reference/pixman-downscale-bilinear-96.ref.png b/test/reference/pixman-downscale-bilinear-96.ref.png
index 0d68a82cc27532aa78fc12af7646f6821a730a2b..84345836aa56b6cc27b5f9ffb947008babb68ec6 100644
GIT binary patch
literal 627
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literal 301
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diff --git a/test/reference/pixman-downscale-fast-24.ref.png b/test/reference/pixman-downscale-fast-24.ref.png
index df0f9c0d84f3f48d00fdb0f3f08ae587754a269d..b6c89fc6c0c2c316cf68b07d3b55bb01580a19c0 100644
GIT binary patch
delta 151
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delta 163
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diff --git a/test/reference/pixman-downscale-fast-95.ref.png b/test/reference/pixman-downscale-fast-95.ref.png
index 3340423fced1b039bd2258570c853615e111a48f..5f099fc5ac6841d7611200006b5ced438a005e16 100644
GIT binary patch
literal 618
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literal 299
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diff --git a/test/reference/pixman-downscale-fast-96.ref.png b/test/reference/pixman-downscale-fast-96.ref.png
index 0d68a82cc27532aa78fc12af7646f6821a730a2b..84345836aa56b6cc27b5f9ffb947008babb68ec6 100644
GIT binary patch
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diff --git a/test/reference/pixman-downscale-good-24.ref.png b/test/reference/pixman-downscale-good-24.ref.png
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GIT binary patch
delta 413
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delta 174
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diff --git a/test/reference/pixman-downscale-good-95.ref.png b/test/reference/pixman-downscale-good-95.ref.png
index 49011d526a05317a18f203e98b45c24cad6cdf69..f4f04af45a85f4923c49481b999ad6fe421aa2a2 100644
GIT binary patch
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diff --git a/test/reference/pixman-downscale-good-96.ref.png b/test/reference/pixman-downscale-good-96.ref.png
index 0d68a82cc27532aa78fc12af7646f6821a730a2b..84345836aa56b6cc27b5f9ffb947008babb68ec6 100644
GIT binary patch
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diff --git a/test/reference/pixman-downscale-nearest-24.ref.png b/test/reference/pixman-downscale-nearest-24.ref.png
index df0f9c0d84f3f48d00fdb0f3f08ae587754a269d..b6c89fc6c0c2c316cf68b07d3b55bb01580a19c0 100644
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delta 151
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delta 163
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diff --git a/test/reference/pixman-downscale-nearest-95.ref.png b/test/reference/pixman-downscale-nearest-95.ref.png
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GIT binary patch
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diff --git a/test/reference/pixman-downscale-nearest-96.ref.png b/test/reference/pixman-downscale-nearest-96.ref.png
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GIT binary patch
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diff --git a/test/reference/surface-pattern-scale-down.argb32.ref.png b/test/reference/surface-pattern-scale-down.argb32.ref.png
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diff --git a/test/reference/surface-pattern-scale-down.rgb24.ref.png b/test/reference/surface-pattern-scale-down.rgb24.ref.png
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-- 
1.8.3.2

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