Commits on Source (43)
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Oded Gabbay authored
Signed-off-by:Oded Gabbay <oded.gabbay@gmail.com>
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Andrea Canciani authored
Since 3d81d89c BUILT_SOURCES is not used anymore, but it was unintentionally left in Win32 Makefiles. Signed-off-by:
Andrea Canciani <ranma42@gmail.com> Reviewed-by:
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Andrea Canciani authored
Instead of explicitly depending on "pixman" for the "all" and "check" targets, rely on the dependency to the .lib file Signed-off-by:
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Andrea Canciani authored
When the build is performed using `cmd.exe` as shell, the `mkdir` command does not support the `-p` flag. The ability to create multiple netsted folder is not used, hence it can be easily replaced by only creating the directory if it does not exist. This makes the build work on the `cmd.exe` shell, except for the `clean` targets. Signed-off-by:
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Simon Richter authored
The `rm` command is not usually available when running on Win32 in a `cmd.exe` shell. Instead the shell provides the `del` builtin, which has somewhat more limited wildcars expansion and error handling. This makes all of the Makefile targets work on Win32 both using `cmd.exe` and using the MSYS environment. Signed-off-by:
Simon Richter <Simon.Richter@hogyros.de> Signed-off-by:
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Andrea Canciani authored
The `check` target in test/Makefile.win32 assumed that any non-0 exit code from the tests was an error, but the testsuite is currently using 77 as a SKIP exit code (based on the convention used in autotools). Fixes fence-image-self-test and cover-test (now reported as SKIP). Signed-off-by:
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Thomas Petazzoni authored
<float.h> is included unconditionally by pixman-private.h, which in turn gets included by assembler files. Unfortunately, with certain C libraries (like the musl C library), <float.h> cannot be included in assembler files: CCLD libpixman-arm-simd.la /home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h: Assembler messages: /home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h:8: Error: bad instruction `int __flt_rounds(void)' /home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h: Assembler messages: /home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h:8: Error: bad instruction `int __flt_rounds(void)' It turns out however that <float.h> is not needed by assembly files, so we move its inclusion within the #ifndef __ASSEMBLER__ condition, which solves the problem. Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by:
Siarhei Siamashka <siarhei.siamashka@gmail.com>
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Søren Sandmann Pedersen authored
When a BILINEAR filter is reduced to NEAREST, it is possible for both types of fast paths to run; in this case, the NEAREST ones should be preferred as that is the simpler filter. Signed-off-by:
Soren Sandmann <soren.sandmann@gmail.com> Reviewed-by:
Bill Spitzak <spitzak@gmail.com>
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Søren Sandmann Pedersen authored
This new test tests a bunch of bilinear downscalings, where many have a transformation such that the BILINEAR filter can be reduced to NEAREST (and many don't). A CRC32 is computed for all the resulting images and compared to a known-good value for both 4-bit and 7-bit interpolation. V2: Remove leftover comment, some minor formatting fixes, use a timestamp as the PRNG seed. Signed-off-by:
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Søren Sandmann Pedersen authored
Generalize and simplify the code that reduces BILINEAR to NEAREST so that the reduction happens for all affine transformations where t00...t12 are integers and (t00 + t01) and (t10 + t11) are both odd. This is a sufficient condition for the resulting transformed coordinates to be exactly at the center of a pixel so that BILINEAR becomes identical to NEAREST. V2: Address some comments by Bill Spitzak Signed-off-by:
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Bill Spitzak authored
Instead of using the boundary of xformed rectangle, use the boundary of xformed ellipse. This is much more accurate and less blurry. In particular the filtering does not change as the image is rotated. Signed-off-by:
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Bill Spitzak authored
It now shows the initial value of 4 when the demo is started Signed-off-by:
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Bill Spitzak authored
Signed-off-by:
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Bill Spitzak authored
This is very useful for comparing the results of SEPARABLE_CONVOLUTION with BILINEAR and NEAREST. v14: Removed good/best items v15: Skip filter generation so gnuplot output continues showing previous value Signed-off-by:
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Bill Spitzak authored
If enable-gnuplot is configured, then you can pipe the output of a pixman-using program to gnuplot and get a continuously-updated plot of the horizontal filter. This works well with demos/scale to test the filter generation. The plot is all the different subposition filters shuffled together. This is misleading in a few cases: IMPULSE.BOX - goes up and down as the subfilters have different numbers of non-zero samples IMPULSE.TRIANGLE - somewhat crooked for the same reason 1-wide filters - looks triangular, but a 1-wide box would be more accurate Changes by Søren: Rewrote the pixman-filter.c part to - make it generate correct coordinates - add a comment on how coordinates are generated - in rounding.txt, add a ceil() variant of the first-sample formula - make the gnuplot output slightly prettier v7: First time this ability was included v8: Use config option Moved code to the filter generator Modified scale demo to not call filter generator a second time. v10: Only print if successful generation of plots Use #ifdef, not #if v11: small whitespace fixes v12: output range from -width/2 to width/2 and include y==0, to avoid misleading plots for subsample_bits==0 and for box filters which may have no small values. Signed-off-by: -
Bill Spitzak authored
Rearranged so that the entire block of memory for the filter pair is allocated first, and then filled in. Previous version allocated and freed two temporary buffers for each filter and did an extra memcpy. v8: small refactor to remove the filter_width function v10: Restored filter_width function but with arguments changed to match later patches v11: Removed unused arg and pointer from filter_width function Whitespace fixes. Signed-off-by: -
Bill Spitzak authored
Simpsons uses cubic curve fitting, with 3 samples defining each cubic. This makes the weights of the samples be in a pattern of 1,4,2,4,2...4,1, and then dividing the result by 3. The previous code was using weights of 1,2,0,6,0,6...,2,1. With this fix the integration is accurate enough that the number of samples could be reduced a lot. Multiples of 12 seem to work best. v7: Merged with patch to reduce from 128 samples to 16 v9: Changed samples from 16 to 12 v10: Fixed rebase error that made it not compile v11: minor whitespace change v14: more whitespace changes Signed-off-by:
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Bill Spitzak authored
Only the triangle is discontinuous at 0. The other filters resemble a cubic closely enough that Simpsons integration works without splitting. Changes by Søren: Rebase without the changes to the integral function, update comment to match the new code. Signed-off-by:
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Søren Sandmann Pedersen authored
The convolution of two BOX filters is simply the length of the interval where both are non-zero, so we can simply return width from the integral() function because the integration region has already been restricted to be such that both functions are non-zero on it. This is both faster and more accurate than doing numerical integration. This patch is based on one by Bill Spitzak https://lists.freedesktop.org/archives/pixman/2016-March/004446.html with these changes: - Rebased to not assume any changes in the arguments to integral(). - Dropped the multiplication by scale - Added more details in the commit message. Signed-off-by: -
Søren Sandmann Pedersen authored
There are a few bugs in the current normalization code (1) The normalization is based on the sum of the *floating point* values generated by integral(). But in order to get the sum to be close to pixman_fixed_1, the sum of the rounded fixed point values should be used. (2) The multiplications in the normalization loops often round the same way, so the residual error can fairly large. (3) The residual error is added to the sample located at index (width - width / 2), which is not the midpoint for odd widths (and for width 1 is in fact outside the array). This patch fixes these issues by (1) using the sum of the fixed point values as the total to divide by, (2) doing error diffusion in the normalization loop, and (3) putting any residual error (which is now guaranteed to be less than pixman_fixed_e) at the first sample, which is the only one that didn't get any error diffused into it. Signed-off-by: -
Bill Spitzak authored
v11: Restored range checks Signed-off-by:
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Bill Spitzak authored
Expanded the size slightly (from ~4.25 to 5) to make the cutoff less noticable. Previouly the value at the cutoff was gaussian_filter(sqrt(2)*3/2) = 0.00626 which is larger than the difference between 8-bit pixels (1/255 = 0.003921). New cutoff is gaussian_filter(2.5) = 0.001089 which is smaller. v11: added some math to commit message v14: left SIGMA in there Signed-off-by:
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Søren Sandmann Pedersen authored
This reverts commit 375f5ec5. This patch was accidentally pushed.
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Behdad Esfahbod authored
...to avoid default promotion to signed int, which causes undefined behaviour in the shift expression.
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Dan Horák authored
Use vector intrinsic for loading possibly unaligned data instead of a typecast. Bugzilla: https://bugzilla.redhat.com/1572540 Signed-off-by:
Dan Horák <dan@danny.cz> Signed-off-by:
Adam Jackson <ajax@redhat.com> Tested-by:
Matt Turner <mattst88@gmail.com> Reviewed-by:
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Adam Jackson authored
Just builds on Fedora 28 for x86_64 at the moment, but it's a start. Credit to Daniel Stone for eliminating the nested docker image. Signed-off-by: -
Adam Jackson authored
ci: Add .gitlab-ci.yml See merge request pixman/pixman!1
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Vladimir Smirnov authored
__builtin_shuffle was removed in clang 5.0. Build log says: test/utils-prng.c:207:27: error: use of unknown builtin '__builtin_shuffle' [-Wimplicit-function-declaration] randdata.vb = __builtin_shuffle (randdata.vb, bswap_shufflemask); ^ test/utils-prng.c:207:25: error: assigning to 'uint8x16' (vector of 16 'uint8_t' values) from incompatible type 'int' randdata.vb = __builtin_shuffle (randdata.vb, bswap_shufflemask); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 errors generated Link to original discussion: http://lists.llvm.org/pipermail/cfe-dev/2017-August/055140.html It's possible to build pixman if attached patch is applied. Basically patch adds check for __builtin_shuffle support and in case there is none, falls back to clang-specific __builtin_shufflevector that do the same but have different API. Bugzilla: https://bugs.gentoo.org/646360 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104886 Tested-by:Philip Chimento <philip.chimento@gmail.com> Reviewed-by:
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Siarhei Siamashka authored
Currently the number of bits per pixel is used instead of the number of bytes per pixel when calculating image strides. This does not cause any real problems, but the gaps between scanlines are excessively large. This patch actually converts bits to bytes and rounds up the result to the nearest byte boundary. Signed-off-by:
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Maarten Lankhorst authored
Pixman is already using the floating point formats internally, expose this capability in case someone wants to support higher bit per component formats. This is useful for igt which depends on cairo to do the rendering. It can use it to convert floats internally to planar Y'CbCr formats, or to F16. We add a new type PIXMAN_TYPE_RGBA_FLOAT for this format, which is an all float array of R, G, B, and A. Formats that use mixed float/int RGBA aren't supported, and will probably need their own type. Changes since v1: - Use RGBA 128 bits and RGB 96 bits memory layouts, to better match the opengl format. Changes since v2: - Add asserts in accessor and for strides to force alignment. - Move test changes to their own commit. Changes since v3: - Define 32bpc as PIXMAN_FORMAT_PACKED_C32 - Rename pixman accessors from rgb*_float_float to rgb*f_float Changes since v4: - Create a new PIXMAN_FORMAT_BYTE for fitting up to 64 bits per component. (based on Siarhei Siamashka's suggestion) - Use new format type PIXMAN_TYPE_RGBA_FLOAT Signed-off-by:Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> #v4 [mlankhorst: Fix missing braces in PIXMAN_FORMAT_RESHIFT macro]
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Maarten Lankhorst authored
Add some basic tests to ensure that the newly added formats work as intended. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk>
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Maarten Lankhorst authored
Signed-off-by: -
Maarten Lankhorst authored
Signed-off-by: -
Andreas Boll authored
pixman 0.34.0 release
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
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Andreas Boll authored
.gitlab-ci.yml
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contrib/ci.sh
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debian/source/format
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