panfrost: Add a blendable format table
Map PIPE formats that are fixed-function blendable to their (internal,
writeback) tuple. Formats which are renderable but require a blend
shadeer will be handled elsewhere to keep this easy to verify.
Notice the subset of SFBD and MFBD color writeback formats used to
identify fixed-function blendable formats are bit compatible, so it
suffices to store only the MFBD variants.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Tested-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7352>
diff --git a/src/panfrost/lib/pan_format.c b/src/panfrost/lib/pan_format.c
index b133442..481a538 100644
--- a/src/panfrost/lib/pan_format.c
+++ b/src/panfrost/lib/pan_format.c
@@ -30,6 +30,59 @@
/* Convenience */
+#define BFMT2(pipe, internal, writeback) \
+ [PIPE_FORMAT_##pipe] = { \
+ MALI_COLOR_BUFFER_INTERNAL_FORMAT_## internal, \
+ MALI_MFBD_COLOR_FORMAT_## writeback \
+ }
+
+#define BFMT(pipe, internal_and_writeback) \
+ BFMT2(pipe, internal_and_writeback, internal_and_writeback)
+
+static const struct pan_blendable_format panfrost_blendable_formats[PIPE_FORMAT_COUNT] = {
+ BFMT2(L8_UNORM, R8G8B8A8, R8),
+ BFMT2(L8A8_UNORM, R8G8B8A8, R8G8),
+ BFMT2(I8_UNORM, R8G8B8A8, R8),
+ BFMT2(A8_UNORM, R8G8B8A8, R8),
+ BFMT2(R8_UNORM, R8G8B8A8, R8),
+ BFMT2(R8G8_UNORM, R8G8B8A8, R8G8),
+ BFMT2(R8G8B8_UNORM, R8G8B8A8, R8G8B8),
+
+ BFMT(B8G8R8A8_UNORM, R8G8B8A8),
+ BFMT(B8G8R8X8_UNORM, R8G8B8A8),
+ BFMT(A8R8G8B8_UNORM, R8G8B8A8),
+ BFMT(X8R8G8B8_UNORM, R8G8B8A8),
+ BFMT(A8B8G8R8_UNORM, R8G8B8A8),
+ BFMT(X8B8G8R8_UNORM, R8G8B8A8),
+ BFMT(R8G8B8X8_UNORM, R8G8B8A8),
+ BFMT(R8G8B8A8_UNORM, R8G8B8A8),
+
+ BFMT2(B5G6R5_UNORM, R5G6B5A0, R5G6B5),
+
+ BFMT(A4B4G4R4_UNORM, R4G4B4A4),
+ BFMT(B4G4R4A4_UNORM, R4G4B4A4),
+ BFMT(R4G4B4A4_UNORM, R4G4B4A4),
+
+ BFMT(R10G10B10A2_UNORM, R10G10B10A2),
+ BFMT(B10G10R10A2_UNORM, R10G10B10A2),
+ BFMT(R10G10B10X2_UNORM, R10G10B10A2),
+ BFMT(B10G10R10X2_UNORM, R10G10B10A2),
+
+ BFMT(B5G5R5A1_UNORM, R5G5B5A1),
+ BFMT(R5G5B5A1_UNORM, R5G5B5A1),
+ BFMT(B5G5R5X1_UNORM, R5G5B5A1),
+};
+
+/* Accessor that is generic over linear/sRGB */
+
+struct pan_blendable_format
+panfrost_blend_format(enum pipe_format format)
+{
+ return panfrost_blendable_formats[util_format_linear(format)];
+}
+
+/* Convenience */
+
#define _V PIPE_BIND_VERTEX_BUFFER
#define _T PIPE_BIND_SAMPLER_VIEW
#define _R PIPE_BIND_RENDER_TARGET