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st/mesa: Set pipe_image_view::shader_access in PBO readpixels.

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Commit 8b626a22b2 introduced a new
pipe_image_view::shader_access field, indicating the access mode
specified in the shader.  st/mesa's built-in PBO download shader
creates a write-only image buffer, so we should flag it as such.

Nobody uses this field yet (Iris will), so we don't need to backport
this fix to stable branches.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Kenneth Graunke 2019-01-31 16:54:43 -08:00
parent 56c3b4971d
commit dc46317d1a
1 changed files with 1 additions and 0 deletions
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src/mesa/state_tracker/st_cb_readpixels.c
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@ -199,6 +199,7 @@ try_pbo_readpixels(struct st_context *st, struct st_renderbuffer *strb,
image.resource = addr.buffer;
image.format = dst_format;
image.access = PIPE_IMAGE_ACCESS_WRITE;
image.shader_access = PIPE_IMAGE_ACCESS_WRITE;
image.u.buf.offset = addr.first_element * addr.bytes_per_pixel;
image.u.buf.size = (addr.last_element - addr.first_element + 1) *
addr.bytes_per_pixel;