fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-12 01:20:17 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

pan/bi: Stub out TEXC handling

Browse source 
We still need to handle actual complex texturing instructions, as well
as packing, but this is the start.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7081>
This commit is contained in:
Alyssa Rosenzweig 2020-10-06 11:18:16 -04:00
parent dcce3feb79
commit 3bf4e60def
1 changed files with 102 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

103
src/panfrost/bifrost/bifrost_compile.c
View file

@ -988,10 +988,111 @@ emit_texs(bi_context *ctx, nir_tex_instr *instr)
bi_emit(ctx, tex);
}
/* Returns dimension with 0 special casing cubemaps. Shamelessly copied from Midgard */
static unsigned
bifrost_tex_format(enum glsl_sampler_dim dim)
{
switch (dim) {
case GLSL_SAMPLER_DIM_1D:
case GLSL_SAMPLER_DIM_BUF:
return 1;
case GLSL_SAMPLER_DIM_2D:
case GLSL_SAMPLER_DIM_MS:
case GLSL_SAMPLER_DIM_EXTERNAL:
case GLSL_SAMPLER_DIM_RECT:
return 2;
case GLSL_SAMPLER_DIM_3D:
return 3;
case GLSL_SAMPLER_DIM_CUBE:
return 0;
default:
DBG("Unknown sampler dim type\n");
assert(0);
return 0;
}
}
static enum bifrost_texture_format_full
bi_texture_format(nir_alu_type T, enum bifrost_outmod outmod)
{
switch (T) {
case nir_type_float16: return BIFROST_TEXTURE_FORMAT_F16 + outmod;
case nir_type_float32: return BIFROST_TEXTURE_FORMAT_F32 + outmod;
case nir_type_uint16: return BIFROST_TEXTURE_FORMAT_U16;
case nir_type_int16: return BIFROST_TEXTURE_FORMAT_S16;
case nir_type_uint32: return BIFROST_TEXTURE_FORMAT_U32;
case nir_type_int32: return BIFROST_TEXTURE_FORMAT_S32;
default: unreachable("Invalid type for texturing");
}
}
static void
emit_texc(bi_context *ctx, nir_tex_instr *instr)
{
unreachable("stub");
/* TODO: support more with other encodings */
assert(instr->sampler_index < 16);
/* TODO: support more ops */
switch (instr->op) {
case nir_texop_tex:
case nir_texop_txl:
break;
default:
unreachable("Unsupported texture op");
}
bi_instruction tex = {
.type = BI_TEXC,
.dest = pan_dest_index(&instr->dest),
.dest_type = instr->dest_type,
.src_types = {
/* Staging registers */
nir_type_uint32,
nir_type_float32, nir_type_float32,
nir_type_uint32
},
.vector_channels = 4
};
struct bifrost_texture_operation desc = {
.sampler_index_or_mode = instr->sampler_index,
.index = instr->texture_index,
.immediate_indices = 1, /* TODO */
.op = BIFROST_TEX_OP_TEX, /* TODO */
.offset_or_bias_disable = false, /* TODO */
.shadow_or_clamp_disable = instr->is_shadow,
.array = false, /* TODO */
.dimension = bifrost_tex_format(instr->sampler_dim),
.lod_mode = BIFROST_LOD_MODE_COMPUTE,
.format_or_fetch = bi_texture_format(instr->dest_type, BIFROST_NONE), /* TODO */
.mask = (1 << tex.vector_channels) - 1
};
for (unsigned i = 0; i < instr->num_srcs; ++i) {
unsigned index = pan_src_index(&instr->src[i].src);
switch (instr->src[i].src_type) {
case nir_tex_src_coord:
/* TODO: cube map descriptor */
tex.src[1] = index;
tex.src[2] = index;
tex.swizzle[1][0] = 0;
tex.swizzle[2][0] = 1;
break;
default:
unreachable("Unhandled src type in texc emit");
}
}
/* Pass the texture operation descriptor in src2 */
tex.src[3] = BIR_INDEX_CONSTANT;
memcpy(&tex.constant.u64, &desc, sizeof(desc));
bi_emit(ctx, tex);
}
/* Simple textures ops correspond to NIR tex or txl with LOD = 0. Anything else