Mesa (main): crocus: add support for set alpha to one with blt.
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Mon Aug 2 19:53:13 UTC 2021
Module: Mesa
Branch: main
Commit: 842b8c8965327615f4692384a905dd63f1fba63d
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=842b8c8965327615f4692384a905dd63f1fba63d
Author: Dave Airlie <airlied at gmail.com>
Date: Sun Aug 1 19:59:31 2021 -0400
crocus: add support for set alpha to one with blt.
This is ported from 965 and fixes
dEQP-GLES2.functional.fbo.render.recreate_colorbuffer.*rebind_tex2d_rgb*
Fixes: f3630548f1da9 ("crocus: initial gallium driver for Intel gfx 4-7")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12164>
---
src/gallium/drivers/crocus/crocus_blt.c | 89 +++++++++++++++++++++++++++++----
1 file changed, 78 insertions(+), 11 deletions(-)
diff --git a/src/gallium/drivers/crocus/crocus_blt.c b/src/gallium/drivers/crocus/crocus_blt.c
index b6b8368d0fd..fd318a8dce8 100644
--- a/src/gallium/drivers/crocus/crocus_blt.c
+++ b/src/gallium/drivers/crocus/crocus_blt.c
@@ -31,6 +31,69 @@
#if GFX_VER <= 5
+static uint32_t
+color_depth_for_cpp(int cpp)
+{
+ switch (cpp) {
+ case 4: return COLOR_DEPTH__32bit;
+ case 2: return COLOR_DEPTH__565;
+ case 1: return COLOR_DEPTH__8bit;
+ default:
+ unreachable("not reached");
+ }
+}
+
+static void
+blt_set_alpha_to_one(struct crocus_batch *batch,
+ struct crocus_resource *dst,
+ int x, int y, int width, int height)
+{
+ const struct isl_format_layout *fmtl = isl_format_get_layout(dst->surf.format);
+ unsigned cpp = fmtl->bpb / 8;
+ uint32_t pitch = dst->surf.row_pitch_B;
+
+ if (dst->surf.tiling != ISL_TILING_LINEAR)
+ pitch /= 4;
+ /* We need to split the blit into chunks that each fit within the blitter's
+ * restrictions. We can't use a chunk size of 32768 because we need to
+ * ensure that src_tile_x + chunk_size fits. We choose 16384 because it's
+ * a nice round power of two, big enough that performance won't suffer, and
+ * small enough to guarantee everything fits.
+ */
+ const uint32_t max_chunk_size = 16384;
+
+ for (uint32_t chunk_x = 0; chunk_x < width; chunk_x += max_chunk_size) {
+ for (uint32_t chunk_y = 0; chunk_y < height; chunk_y += max_chunk_size) {
+ const uint32_t chunk_w = MIN2(max_chunk_size, width - chunk_x);
+ const uint32_t chunk_h = MIN2(max_chunk_size, height - chunk_y);
+ uint32_t tile_x, tile_y, offset;
+ ASSERTED uint32_t z_offset_el, array_offset;
+ isl_tiling_get_intratile_offset_el(dst->surf.tiling,
+ cpp * 8, dst->surf.row_pitch_B,
+ dst->surf.array_pitch_el_rows,
+ chunk_x, chunk_y, 0, 0,
+ &offset,
+ &tile_x, &tile_y,
+ &z_offset_el, &array_offset);
+ assert(z_offset_el == 0);
+ assert(array_offset == 0);
+ crocus_emit_cmd(batch, GENX(XY_COLOR_BLT), xyblt) {
+ xyblt.TilingEnable = dst->surf.tiling != ISL_TILING_LINEAR;
+ xyblt.ColorDepth = color_depth_for_cpp(cpp);
+ xyblt.RasterOperation = 0xF0;
+ xyblt.DestinationPitch = pitch;
+ xyblt._32bppByteMask = 2;
+ xyblt.DestinationBaseAddress = rw_bo(dst->bo, offset);
+ xyblt.DestinationX1Coordinate = tile_x;
+ xyblt.DestinationY1Coordinate = tile_y;
+ xyblt.DestinationX2Coordinate = tile_x + chunk_w;
+ xyblt.DestinationY2Coordinate = tile_y + chunk_h;
+ xyblt.SolidPatternColor = 0xffffffff;
+ }
+ }
+ }
+}
+
static bool validate_blit_for_blt(struct crocus_batch *batch,
const struct pipe_blit_info *info)
{
@@ -51,6 +114,17 @@ static bool validate_blit_for_blt(struct crocus_batch *batch,
if (info->dst.box.depth > 1 || info->src.box.depth > 1)
return false;
+ const struct util_format_description *desc =
+ util_format_description(info->src.format);
+ int i = util_format_get_first_non_void_channel(info->src.format);
+ if (i == -1)
+ return false;
+
+ /* can't do the alpha to 1 setting for these. */
+ if ((util_format_has_alpha1(info->src.format) &&
+ util_format_has_alpha(info->dst.format) &&
+ desc->channel[i].size > 8))
+ return false;
return true;
}
@@ -62,17 +136,6 @@ static inline int crocus_resource_blt_pitch(struct crocus_resource *res)
return pitch;
}
-static uint32_t
-color_depth_for_cpp(int cpp)
-{
- switch (cpp) {
- case 4: return COLOR_DEPTH__32bit;
- case 2: return COLOR_DEPTH__565;
- case 1: return COLOR_DEPTH__8bit;
- default:
- unreachable("not reached");
- }
-}
static bool emit_copy_blt(struct crocus_batch *batch,
struct crocus_resource *src,
@@ -283,6 +346,10 @@ static bool crocus_emit_blt(struct crocus_batch *batch,
}
}
}
+
+ if (util_format_has_alpha1(src->base.b.format) &&
+ util_format_has_alpha(dst->base.b.format))
+ blt_set_alpha_to_one(batch, dst, 0, 0, src_width, src_height);
return true;
}
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