Abdiel Janulgue <abdiel.janul...@linux.intel.com> writes:
> Add intel_miptree_create_for_offset which adds support for creating a single-
> level miptree based on the existing offsets and dimensions of another
> mip-tree level. Use this function as well in intel_miptree_create_for_region,
> but for the whole region.
>
> Signed-off-by: Abdiel Janulgue <abdiel.janul...@linux.intel.com>
> ---
> src/mesa/drivers/dri/intel/intel_mipmap_tree.c | 39
> +++++++++++++++++++++---
> src/mesa/drivers/dri/intel/intel_mipmap_tree.h | 12 ++++++++
> src/mesa/drivers/dri/intel/intel_regions.h | 8 +++++
> 3 files changed, 54 insertions(+), 5 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
> b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
> index 8d814bd..0a64de4 100644
> --- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
> +++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
> @@ -306,17 +306,26 @@ intel_miptree_create(struct intel_context *intel,
> }
>
>
> +/**
> + * Create miptree for region based on offset, size, and level
> + */
> struct intel_mipmap_tree *
> -intel_miptree_create_for_region(struct intel_context *intel,
> - GLenum target,
> - gl_format format,
> - struct intel_region *region)
> +intel_miptree_create_for_offset(struct intel_context *intel,
> + GLenum target,
> + gl_format format,
> + struct intel_region *region,
> + GLuint width,
> + GLuint height,
> + GLuint level_x,
> + GLuint level_y,
> + GLuint slice_x_offset,
> + GLuint slice_y_offset)
> {
> struct intel_mipmap_tree *mt;
>
> mt = intel_miptree_create_internal(intel, target, format,
> 0, 0,
> - region->width, region->height, 1,
> + width, height, 1,
> true, 0 /* num_samples */,
> INTEL_MSAA_LAYOUT_NONE);I'd probably skip this whole patch and just expose intel_miptree_create_internal (perhaps called intel_miptree_create_layout() instead of _internal() to clarify that it doesn't do allocation? Not sure.), then do the fixup in the KHR_gl_texture_image function.
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