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iris: Enable A8/A16_UNORM in an inefficient manner

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These are currently just use the 'A' hardware formats, rather than the
faster 'R' formats.  glBitmap handling needs these, it seems. :(
This commit is contained in:
Kenneth Graunke 2018-11-04 15:00:31 -08:00
parent 80497af192
commit 4b31f506f8
1 changed files with 7 additions and 6 deletions
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13
src/gallium/drivers/iris/iris_formats.c
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@ -159,11 +159,9 @@ iris_isl_format_for_pipe_format(enum pipe_format pf)
* we don't currently have the surface format in that code...
*/
//[PIPE_FORMAT_A8_UINT] = ISL_FORMAT_A8_UINT,
[PIPE_FORMAT_A8_UNORM] = ISL_FORMAT_A8_UNORM,
//[PIPE_FORMAT_A8_SINT] = ISL_FORMAT_A8_SINT,
//[PIPE_FORMAT_A8_SNORM] = ISL_FORMAT_A8_SNORM,
//[PIPE_FORMAT_A16_UINT] = ISL_FORMAT_A16_UINT,
[PIPE_FORMAT_A16_UNORM] = ISL_FORMAT_A16_UNORM,
//[PIPE_FORMAT_A16_SINT] = ISL_FORMAT_A16_SINT,
//[PIPE_FORMAT_A16_SNORM] = ISL_FORMAT_A16_SNORM,
[PIPE_FORMAT_A16_FLOAT] = ISL_FORMAT_A16_FLOAT,
@ -171,6 +169,8 @@ iris_isl_format_for_pipe_format(enum pipe_format pf)
//[PIPE_FORMAT_A32_SINT] = ISL_FORMAT_A32_SINT,
[PIPE_FORMAT_A32_FLOAT] = ISL_FORMAT_A32_FLOAT,
#endif
[PIPE_FORMAT_A8_UNORM] = ISL_FORMAT_A8_UNORM,
[PIPE_FORMAT_A16_UNORM] = ISL_FORMAT_A16_UNORM,
/* Just use red formats for these - they're actually renderable,
* and faster to sample than the legacy L/I formats.
@ -326,7 +326,8 @@ iris_isl_format_for_pipe_format(enum pipe_format pf)
return table[pf];
}
static enum pipe_format
// XXX: use RED for ALPHA textures
UNUSED static enum pipe_format
alpha_to_red(enum pipe_format pf)
{
switch (pf) {
@ -358,9 +359,9 @@ iris_format_for_usage(const struct gen_device_info *devinfo,
swizzle = ISL_SWIZZLE(RED, RED, RED, RED);
} else if (util_format_is_luminance(pformat)) {
swizzle = ISL_SWIZZLE(RED, RED, RED, ONE);
} else if (util_format_is_alpha(pformat)) {
pformat = alpha_to_red(pformat);
swizzle = ISL_SWIZZLE(ZERO, ZERO, ZERO, RED);
//} else if (util_format_is_alpha(pformat)) {
//pformat = alpha_to_red(pformat);
//swizzle = ISL_SWIZZLE(ZERO, ZERO, ZERO, RED);
}
}