Quoting Maarten Lankhorst (2018-08-01 13:41:33)
> 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.
>
> 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.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
> ---
> pixman/pixman-access.c | 128 ++++++++++++++++++++++++++++++++++++-
> pixman/pixman-bits-image.c | 3 +
> pixman/pixman-image.c | 4 ++
> pixman/pixman.h | 32 ++++++----
> 4 files changed, 155 insertions(+), 12 deletions(-)
>
> diff --git a/pixman/pixman-access.c b/pixman/pixman-access.c
> index 4f0642d77785..10fa049becf4 100644
> --- a/pixman/pixman-access.c
> +++ b/pixman/pixman-access.c
> @@ -642,6 +642,48 @@ fetch_scanline_a2r10g10b10_float (bits_image_t * image,
> }
>
> /* Expects a float buffer */
> +#ifndef PIXMAN_FB_ACCESSORS
> +static void
> +fetch_scanline_rgb_float_float (bits_image_t *image,
> + int x,
> + int y,
> + int width,
> + uint32_t * b,
> + const uint32_t *mask)
> +{
> + const float *bits = (float *)image->bits + y * image->rowstride;
rowstride is in bytes, is it not?
-Chris
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