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nir/lower_tex: add alpha channel parameter for yuv lowering

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We're about to introduce AYUV support which provides its own alpha
channel. So give alpha as a parameter and set it to 1 on exising
formats.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
This commit is contained in:
Lionel Landwerlin
2018-11-09 10:33:37 +00:00
parent 97fb1a02fd
commit 0a30c33e83
1 changed files with 11 additions and 6 deletions
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17
src/compiler/nir/nir_lower_tex.c
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@@ -261,7 +261,8 @@ sample_plane(nir_builder *b, nir_tex_instr *tex, int plane)
static void
convert_yuv_to_rgb(nir_builder *b, nir_tex_instr *tex,
nir_ssa_def *y, nir_ssa_def *u, nir_ssa_def *v)
nir_ssa_def *y, nir_ssa_def *u, nir_ssa_def *v,
nir_ssa_def *a)
{
nir_const_value m[3] = {
{ .f32 = { 1.0f, 0.0f, 1.59602678f, 0.0f } },
@@ -281,7 +282,7 @@ convert_yuv_to_rgb(nir_builder *b, nir_tex_instr *tex,
nir_ssa_def *green = nir_fdot4(b, yuv, nir_build_imm(b, 4, 32, m[1]));
nir_ssa_def *blue = nir_fdot4(b, yuv, nir_build_imm(b, 4, 32, m[2]));
nir_ssa_def *result = nir_vec4(b, red, green, blue, nir_imm_float(b, 1.0f));
nir_ssa_def *result = nir_vec4(b, red, green, blue, a);
nir_ssa_def_rewrite_uses(&tex->dest.ssa, nir_src_for_ssa(result));
}
@@ -297,7 +298,8 @@ lower_y_uv_external(nir_builder *b, nir_tex_instr *tex)
convert_yuv_to_rgb(b, tex,
nir_channel(b, y, 0),
nir_channel(b, uv, 0),
nir_channel(b, uv, 1));
nir_channel(b, uv, 1),
nir_imm_float(b, 1.0f));
}
static void
@@ -312,7 +314,8 @@ lower_y_u_v_external(nir_builder *b, nir_tex_instr *tex)
convert_yuv_to_rgb(b, tex,
nir_channel(b, y, 0),
nir_channel(b, u, 0),
nir_channel(b, v, 0));
nir_channel(b, v, 0),
nir_imm_float(b, 1.0f));
}
static void
@@ -326,7 +329,8 @@ lower_yx_xuxv_external(nir_builder *b, nir_tex_instr *tex)
convert_yuv_to_rgb(b, tex,
nir_channel(b, y, 0),
nir_channel(b, xuxv, 1),
nir_channel(b, xuxv, 3));
nir_channel(b, xuxv, 3),
nir_imm_float(b, 1.0f));
}
static void
@@ -340,7 +344,8 @@ lower_xy_uxvx_external(nir_builder *b, nir_tex_instr *tex)
convert_yuv_to_rgb(b, tex,
nir_channel(b, y, 1),
nir_channel(b, uxvx, 0),
nir_channel(b, uxvx, 2));
nir_channel(b, uxvx, 2),
nir_imm_float(b, 1.0f));
}
/*