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v3dv: add swizzle helpers to identify formats wit R/B swap and reverse flags

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Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14533>
This commit is contained in:
Iago Toral Quiroga 2022-01-13 08:55:42 +01:00 • committed by Marge Bot
parent dbd3935b04
commit 872f08815b
2 changed files with 39 additions and 0 deletions
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36
src/broadcom/vulkan/v3dv_formats.c
View file

@ -40,6 +40,42 @@ v3dv_get_format_swizzle(struct v3dv_device *device, VkFormat f)
return vf->swizzle;
}
bool
v3dv_format_swizzle_needs_rb_swap(const uint8_t *swizzle)
{
/* Normal case */
if (swizzle[0] == PIPE_SWIZZLE_Z)
return swizzle[2] == PIPE_SWIZZLE_X;
/* Format uses reverse flag */
if (swizzle[0] == PIPE_SWIZZLE_Y)
return swizzle[2] == PIPE_SWIZZLE_W;
return false;
}
bool
v3dv_format_swizzle_needs_reverse(const uint8_t *swizzle)
{
/* Normal case */
if (swizzle[0] == PIPE_SWIZZLE_W &&
swizzle[1] == PIPE_SWIZZLE_Z &&
swizzle[2] == PIPE_SWIZZLE_Y &&
swizzle[3] == PIPE_SWIZZLE_X) {
return true;
}
/* Format uses RB swap flag */
if (swizzle[0] == PIPE_SWIZZLE_Y &&
swizzle[1] == PIPE_SWIZZLE_Z &&
swizzle[2] == PIPE_SWIZZLE_W &&
swizzle[3] == PIPE_SWIZZLE_X) {
return true;
}
return false;
}
uint8_t
v3dv_get_tex_return_size(const struct v3dv_format *vf,
bool compare_enable)

3
src/broadcom/vulkan/v3dv_private.h
View file

@ -554,6 +554,9 @@ struct v3d_resource_slice {
uint32_t padded_height_of_output_image_in_uif_blocks;
};
bool v3dv_format_swizzle_needs_rb_swap(const uint8_t *swizzle);
bool v3dv_format_swizzle_needs_reverse(const uint8_t *swizzle);
struct v3dv_image {
struct vk_image vk;