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iris: fix alpha channel for RGB BC1 formats

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This commit is contained in:
Kenneth Graunke 2018-12-01 17:07:09 -08:00
parent 47d4ea1a16
commit 90274bd48f
1 changed files with 13 additions and 8 deletions
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21
src/gallium/drivers/iris/iris_formats.c
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@ -353,15 +353,20 @@ iris_format_for_usage(const struct gen_device_info *devinfo,
{
struct isl_swizzle swizzle = ISL_SWIZZLE_IDENTITY;
if ((usage & ISL_SURF_USAGE_TEXTURE_BIT) && !util_format_is_srgb(pformat)) {
if (util_format_is_intensity(pformat)) {
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);
if (usage & ISL_SURF_USAGE_TEXTURE_BIT) {
if (!util_format_is_srgb(pformat)) {
if (util_format_is_intensity(pformat)) {
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);
}
}
if (pformat == PIPE_FORMAT_DXT1_RGB ||
pformat == PIPE_FORMAT_DXT1_SRGB)
swizzle = ISL_SWIZZLE(RED, GREEN, BLUE, ONE);
}
enum isl_format format = iris_isl_format_for_pipe_format(pformat);