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zink: add some format functions for emulating alpha formats

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Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17687>
This commit is contained in:
Mike Blumenkrantz 2022-08-02 08:31:33 -04:00 • committed by Marge Bot
parent 3b27632abc
commit 88390404b8
2 changed files with 111 additions and 0 deletions
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105
src/gallium/drivers/zink/zink_format.c
View file

@ -201,6 +201,111 @@ zink_pipe_format_to_vk_format(enum pipe_format format)
return formats[format];
}
bool
zink_format_is_red_alpha(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_R4A4_UNORM:
case PIPE_FORMAT_R8A8_SINT:
case PIPE_FORMAT_R8A8_SNORM:
case PIPE_FORMAT_R8A8_UINT:
case PIPE_FORMAT_R8A8_UNORM:
case PIPE_FORMAT_R16A16_SINT:
case PIPE_FORMAT_R16A16_SNORM:
case PIPE_FORMAT_R16A16_UINT:
case PIPE_FORMAT_R16A16_UNORM:
case PIPE_FORMAT_R16A16_FLOAT:
case PIPE_FORMAT_R32A32_SINT:
case PIPE_FORMAT_R32A32_UINT:
case PIPE_FORMAT_R32A32_FLOAT:
return true;
default: break;
}
return false;
}
bool
zink_format_is_emulated_alpha(enum pipe_format format)
{
return util_format_is_alpha(format) ||
util_format_is_luminance(format) ||
util_format_is_luminance_alpha(format) ||
zink_format_is_red_alpha(format);
}
static enum pipe_format
emulate_alpha(enum pipe_format format)
{
if (format == PIPE_FORMAT_A8_UNORM)
return PIPE_FORMAT_R8_UNORM;
if (format == PIPE_FORMAT_A8_UINT)
return PIPE_FORMAT_R8_UINT;
if (format == PIPE_FORMAT_A8_SNORM)
return PIPE_FORMAT_R8_SNORM;
if (format == PIPE_FORMAT_A8_SINT)
return PIPE_FORMAT_R8_SINT;
if (format == PIPE_FORMAT_A16_UNORM)
return PIPE_FORMAT_R16_UNORM;
if (format == PIPE_FORMAT_A16_UINT)
return PIPE_FORMAT_R16_UINT;
if (format == PIPE_FORMAT_A16_SNORM)
return PIPE_FORMAT_R16_SNORM;
if (format == PIPE_FORMAT_A16_SINT)
return PIPE_FORMAT_R16_SINT;
if (format == PIPE_FORMAT_A16_FLOAT)
return PIPE_FORMAT_R16_FLOAT;
if (format == PIPE_FORMAT_A32_UINT)
return PIPE_FORMAT_R32_UINT;
if (format == PIPE_FORMAT_A32_SINT)
return PIPE_FORMAT_R32_SINT;
if (format == PIPE_FORMAT_A32_FLOAT)
return PIPE_FORMAT_R32_FLOAT;
return format;
}
static enum pipe_format
emulate_red_alpha(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_R8A8_SINT:
return PIPE_FORMAT_R8G8_SINT;
case PIPE_FORMAT_R8A8_SNORM:
return PIPE_FORMAT_R8G8_SNORM;
case PIPE_FORMAT_R8A8_UINT:
return PIPE_FORMAT_R8G8_UINT;
case PIPE_FORMAT_R8A8_UNORM:
return PIPE_FORMAT_R8G8_UNORM;
case PIPE_FORMAT_R16A16_SINT:
return PIPE_FORMAT_R16G16_SINT;
case PIPE_FORMAT_R16A16_SNORM:
return PIPE_FORMAT_R16G16_SNORM;
case PIPE_FORMAT_R16A16_UINT:
return PIPE_FORMAT_R16G16_UINT;
case PIPE_FORMAT_R16A16_UNORM:
return PIPE_FORMAT_R16G16_UNORM;
case PIPE_FORMAT_R16A16_FLOAT:
return PIPE_FORMAT_R16G16_FLOAT;
case PIPE_FORMAT_R32A32_SINT:
return PIPE_FORMAT_R32G32_SINT;
case PIPE_FORMAT_R32A32_UINT:
return PIPE_FORMAT_R32G32_UINT;
case PIPE_FORMAT_R32A32_FLOAT:
return PIPE_FORMAT_R32G32_FLOAT;
default: break;
}
return format;
}
enum pipe_format
zink_format_get_emulated_alpha(enum pipe_format format)
{
if (util_format_is_alpha(format))
return emulate_alpha(format);
if (util_format_is_luminance(format) || util_format_is_luminance_alpha(format))
return util_format_luminance_to_red(format);
return emulate_red_alpha(format);
}
bool
zink_format_is_voidable_rgba_variant(enum pipe_format format)

6
src/gallium/drivers/zink/zink_format.h
View file

@ -37,4 +37,10 @@ zink_pipe_format_to_vk_format(enum pipe_format format);
bool
zink_format_is_voidable_rgba_variant(enum pipe_format format);
bool
zink_format_is_red_alpha(enum pipe_format format);
bool
zink_format_is_emulated_alpha(enum pipe_format format);
enum pipe_format
zink_format_get_emulated_alpha(enum pipe_format format);
#endif