diff options
| -rw-r--r-- | src/intel/blorp/blorp_clear.c | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/src/intel/blorp/blorp_clear.c b/src/intel/blorp/blorp_clear.c index f53d4611601..7282eace54a 100644 --- a/src/intel/blorp/blorp_clear.c +++ b/src/intel/blorp/blorp_clear.c @@ -239,6 +239,26 @@ blorp_fast_clear(struct blorp_batch *batch, batch->blorp->exec(batch, ¶ms); } +static union isl_color_value +swizzle_color_value(union isl_color_value src, struct isl_swizzle swizzle) +{ + union isl_color_value dst = { .u32 = { 0, } }; + + /* We assign colors in ABGR order so that the first one will be taken in + * RGBA precedence order. According to the PRM docs for shader channel + * select, this matches Haswell hardware behavior. + */ + if ((unsigned)(swizzle.a - ISL_CHANNEL_SELECT_RED) < 4) + dst.u32[swizzle.a - ISL_CHANNEL_SELECT_RED] = src.u32[3]; + if ((unsigned)(swizzle.b - ISL_CHANNEL_SELECT_RED) < 4) + dst.u32[swizzle.b - ISL_CHANNEL_SELECT_RED] = src.u32[2]; + if ((unsigned)(swizzle.g - ISL_CHANNEL_SELECT_RED) < 4) + dst.u32[swizzle.g - ISL_CHANNEL_SELECT_RED] = src.u32[1]; + if ((unsigned)(swizzle.r - ISL_CHANNEL_SELECT_RED) < 4) + dst.u32[swizzle.r - ISL_CHANNEL_SELECT_RED] = src.u32[0]; + + return dst; +} void blorp_clear(struct blorp_batch *batch, @@ -257,6 +277,14 @@ blorp_clear(struct blorp_batch *batch, params.x1 = x1; params.y1 = y1; + /* Manually apply the clear destination swizzle. This way swizzled clears + * will work for swizzles which we can't normally use for rendering and it + * also ensures that they work on pre-Haswell hardware which can't swizlle + * at all. + */ + clear_color = swizzle_color_value(clear_color, swizzle); + swizzle = ISL_SWIZZLE_IDENTITY; + if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) { clear_color.u32[0] = float3_to_rgb9e5(clear_color.f32); format = ISL_FORMAT_R32_UINT; @@ -264,24 +292,8 @@ blorp_clear(struct blorp_batch *batch, /* Broadwell and earlier cannot render to this format so we need to work * around it by swapping the colors around and using B4G4R4A4 instead. */ - - /* First, we apply the swizzle. */ - union isl_color_value old; - assert((unsigned)(swizzle.r - ISL_CHANNEL_SELECT_RED) < 4); - assert((unsigned)(swizzle.g - ISL_CHANNEL_SELECT_RED) < 4); - assert((unsigned)(swizzle.b - ISL_CHANNEL_SELECT_RED) < 4); - assert((unsigned)(swizzle.a - ISL_CHANNEL_SELECT_RED) < 4); - old.u32[swizzle.r - ISL_CHANNEL_SELECT_RED] = clear_color.u32[0]; - old.u32[swizzle.g - ISL_CHANNEL_SELECT_RED] = clear_color.u32[1]; - old.u32[swizzle.b - ISL_CHANNEL_SELECT_RED] = clear_color.u32[2]; - old.u32[swizzle.a - ISL_CHANNEL_SELECT_RED] = clear_color.u32[3]; - swizzle = ISL_SWIZZLE_IDENTITY; - - /* Now we re-order for the new format */ - clear_color.u32[0] = old.u32[1]; - clear_color.u32[1] = old.u32[2]; - clear_color.u32[2] = old.u32[3]; - clear_color.u32[3] = old.u32[0]; + const struct isl_swizzle ARGB = ISL_SWIZZLE(ALPHA, RED, GREEN, BLUE); + clear_color = swizzle_color_value(clear_color, ARGB); format = ISL_FORMAT_B4G4R4A4_UNORM; } |