mirror of https://gitlab.freedesktop.org/mesa/mesa
460 lines
16 KiB
C
460 lines
16 KiB
C
/*
|
|
* Copyright © 2017 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "vk_nir_convert_ycbcr.h"
|
|
|
|
#include "vk_format.h"
|
|
#include "vk_ycbcr_conversion.h"
|
|
|
|
#include <math.h>
|
|
|
|
static nir_def *
|
|
y_range(nir_builder *b,
|
|
nir_def *y_channel,
|
|
int bpc,
|
|
VkSamplerYcbcrRange range)
|
|
{
|
|
switch (range) {
|
|
case VK_SAMPLER_YCBCR_RANGE_ITU_FULL:
|
|
return y_channel;
|
|
case VK_SAMPLER_YCBCR_RANGE_ITU_NARROW:
|
|
return nir_fmul_imm(b,
|
|
nir_fadd_imm(b,
|
|
nir_fmul_imm(b, y_channel,
|
|
pow(2, bpc) - 1),
|
|
-16.0f * pow(2, bpc - 8)),
|
|
1.0f / (219.0f * pow(2, bpc - 8)));
|
|
|
|
default:
|
|
unreachable("missing Ycbcr range");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static nir_def *
|
|
chroma_range(nir_builder *b,
|
|
nir_def *chroma_channel,
|
|
int bpc,
|
|
VkSamplerYcbcrRange range)
|
|
{
|
|
switch (range) {
|
|
case VK_SAMPLER_YCBCR_RANGE_ITU_FULL:
|
|
return nir_fadd(b, chroma_channel,
|
|
nir_imm_float(b, -pow(2, bpc - 1) / (pow(2, bpc) - 1.0f)));
|
|
case VK_SAMPLER_YCBCR_RANGE_ITU_NARROW:
|
|
return nir_fmul_imm(b,
|
|
nir_fadd_imm(b,
|
|
nir_fmul_imm(b, chroma_channel,
|
|
pow(2, bpc) - 1),
|
|
-128.0f * pow(2, bpc - 8)),
|
|
1.0f / (224.0f * pow(2, bpc - 8)));
|
|
default:
|
|
unreachable("missing Ycbcr range");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
typedef struct nir_const_value_3_4 {
|
|
nir_const_value v[3][4];
|
|
} nir_const_value_3_4;
|
|
|
|
static const nir_const_value_3_4 *
|
|
ycbcr_model_to_rgb_matrix(VkSamplerYcbcrModelConversion model)
|
|
{
|
|
switch (model) {
|
|
case VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_601: {
|
|
static const nir_const_value_3_4 bt601 = { {
|
|
{ { .f32 = 1.402f }, { .f32 = 1.0f }, { .f32 = 0.0f }, { .f32 = 0.0f } },
|
|
{ { .f32 = -0.714136286201022f }, { .f32 = 1.0f }, { .f32 = -0.344136286201022f }, { .f32 = 0.0f } },
|
|
{ { .f32 = 0.0f }, { .f32 = 1.0f }, { .f32 = 1.772f }, { .f32 = 0.0f } },
|
|
} };
|
|
|
|
return &bt601;
|
|
}
|
|
case VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_709: {
|
|
static const nir_const_value_3_4 bt709 = { {
|
|
{ { .f32 = 1.5748031496063f }, { .f32 = 1.0f }, { .f32 = 0.0f }, { .f32 = 0.0f } },
|
|
{ { .f32 = -0.468125209181067f }, { .f32 = 1.0f }, { .f32 = -0.187327487470334f }, { .f32 = 0.0f } },
|
|
{ { .f32 = 0.0f }, { .f32 = 1.0f }, { .f32 = 1.85563184264242f }, { .f32 = 0.0f } },
|
|
} };
|
|
|
|
return &bt709;
|
|
}
|
|
case VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_2020: {
|
|
static const nir_const_value_3_4 bt2020 = { {
|
|
{ { .f32 = 1.4746f }, { .f32 = 1.0f }, { .f32 = 0.0f }, { .f32 = 0.0f } },
|
|
{ { .f32 = -0.571353126843658f }, { .f32 = 1.0f }, { .f32 = -0.164553126843658f }, { .f32 = 0.0f } },
|
|
{ { .f32 = 0.0f }, { .f32 = 1.0f }, { .f32 = 1.8814f }, { .f32 = 0.0f } },
|
|
} };
|
|
|
|
return &bt2020;
|
|
}
|
|
default:
|
|
unreachable("missing Ycbcr model");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
nir_def *
|
|
nir_convert_ycbcr_to_rgb(nir_builder *b,
|
|
VkSamplerYcbcrModelConversion model,
|
|
VkSamplerYcbcrRange range,
|
|
nir_def *raw_channels,
|
|
uint32_t *bpcs)
|
|
{
|
|
nir_def *expanded_channels =
|
|
nir_vec4(b,
|
|
chroma_range(b, nir_channel(b, raw_channels, 0), bpcs[0], range),
|
|
y_range(b, nir_channel(b, raw_channels, 1), bpcs[1], range),
|
|
chroma_range(b, nir_channel(b, raw_channels, 2), bpcs[2], range),
|
|
nir_channel(b, raw_channels, 3));
|
|
|
|
if (model == VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_IDENTITY)
|
|
return expanded_channels;
|
|
|
|
const nir_const_value_3_4 *conversion_matrix =
|
|
ycbcr_model_to_rgb_matrix(model);
|
|
|
|
nir_def *converted_channels[] = {
|
|
nir_fdot(b, expanded_channels, nir_build_imm(b, 4, 32, conversion_matrix->v[0])),
|
|
nir_fdot(b, expanded_channels, nir_build_imm(b, 4, 32, conversion_matrix->v[1])),
|
|
nir_fdot(b, expanded_channels, nir_build_imm(b, 4, 32, conversion_matrix->v[2]))
|
|
};
|
|
|
|
return nir_vec4(b,
|
|
converted_channels[0], converted_channels[1],
|
|
converted_channels[2], nir_channel(b, raw_channels, 3));
|
|
}
|
|
|
|
struct ycbcr_state {
|
|
nir_builder *builder;
|
|
nir_def *image_size;
|
|
nir_tex_instr *origin_tex;
|
|
nir_deref_instr *tex_deref;
|
|
const struct vk_ycbcr_conversion_state *conversion;
|
|
const struct vk_format_ycbcr_info *format_ycbcr_info;
|
|
};
|
|
|
|
/* TODO: we should probably replace this with a push constant/uniform. */
|
|
static nir_def *
|
|
get_texture_size(struct ycbcr_state *state, nir_deref_instr *texture)
|
|
{
|
|
if (state->image_size)
|
|
return state->image_size;
|
|
|
|
nir_builder *b = state->builder;
|
|
const struct glsl_type *type = texture->type;
|
|
nir_tex_instr *tex = nir_tex_instr_create(b->shader, 1);
|
|
|
|
tex->op = nir_texop_txs;
|
|
tex->sampler_dim = glsl_get_sampler_dim(type);
|
|
tex->is_array = glsl_sampler_type_is_array(type);
|
|
tex->is_shadow = glsl_sampler_type_is_shadow(type);
|
|
tex->dest_type = nir_type_int32;
|
|
|
|
tex->src[0] = nir_tex_src_for_ssa(nir_tex_src_texture_deref,
|
|
&texture->def);
|
|
|
|
nir_def_init(&tex->instr, &tex->def, nir_tex_instr_dest_size(tex), 32);
|
|
nir_builder_instr_insert(b, &tex->instr);
|
|
|
|
state->image_size = nir_i2f32(b, &tex->def);
|
|
|
|
return state->image_size;
|
|
}
|
|
|
|
static nir_def *
|
|
implicit_downsampled_coord(nir_builder *b,
|
|
nir_def *value,
|
|
nir_def *max_value,
|
|
int div_scale)
|
|
{
|
|
return nir_fadd(b,
|
|
value,
|
|
nir_frcp(b,
|
|
nir_fmul(b,
|
|
nir_imm_float(b, div_scale),
|
|
max_value)));
|
|
}
|
|
|
|
static nir_def *
|
|
implicit_downsampled_coords(struct ycbcr_state *state,
|
|
nir_def *old_coords,
|
|
const struct vk_format_ycbcr_plane *format_plane)
|
|
{
|
|
nir_builder *b = state->builder;
|
|
const struct vk_ycbcr_conversion_state *conversion = state->conversion;
|
|
nir_def *image_size = get_texture_size(state, state->tex_deref);
|
|
nir_def *comp[4] = { NULL, };
|
|
int c;
|
|
|
|
for (c = 0; c < ARRAY_SIZE(conversion->chroma_offsets); c++) {
|
|
if (format_plane->denominator_scales[c] > 1 &&
|
|
conversion->chroma_offsets[c] == VK_CHROMA_LOCATION_COSITED_EVEN) {
|
|
comp[c] = implicit_downsampled_coord(b,
|
|
nir_channel(b, old_coords, c),
|
|
nir_channel(b, image_size, c),
|
|
format_plane->denominator_scales[c]);
|
|
} else {
|
|
comp[c] = nir_channel(b, old_coords, c);
|
|
}
|
|
}
|
|
|
|
/* Leave other coordinates untouched */
|
|
for (; c < old_coords->num_components; c++)
|
|
comp[c] = nir_channel(b, old_coords, c);
|
|
|
|
return nir_vec(b, comp, old_coords->num_components);
|
|
}
|
|
|
|
static nir_def *
|
|
create_plane_tex_instr_implicit(struct ycbcr_state *state,
|
|
uint32_t plane)
|
|
{
|
|
nir_builder *b = state->builder;
|
|
const struct vk_ycbcr_conversion_state *conversion = state->conversion;
|
|
const struct vk_format_ycbcr_plane *format_plane =
|
|
&state->format_ycbcr_info->planes[plane];
|
|
nir_tex_instr *old_tex = state->origin_tex;
|
|
nir_tex_instr *tex = nir_tex_instr_create(b->shader, old_tex->num_srcs + 1);
|
|
|
|
for (uint32_t i = 0; i < old_tex->num_srcs; i++) {
|
|
tex->src[i].src_type = old_tex->src[i].src_type;
|
|
|
|
switch (old_tex->src[i].src_type) {
|
|
case nir_tex_src_coord:
|
|
if (format_plane->has_chroma && conversion->chroma_reconstruction) {
|
|
tex->src[i].src =
|
|
nir_src_for_ssa(implicit_downsampled_coords(state,
|
|
old_tex->src[i].src.ssa,
|
|
format_plane));
|
|
break;
|
|
}
|
|
FALLTHROUGH;
|
|
default:
|
|
tex->src[i].src = nir_src_for_ssa(old_tex->src[i].src.ssa);
|
|
break;
|
|
}
|
|
}
|
|
tex->src[tex->num_srcs - 1] = nir_tex_src_for_ssa(nir_tex_src_plane,
|
|
nir_imm_int(b, plane));
|
|
tex->sampler_dim = old_tex->sampler_dim;
|
|
tex->dest_type = old_tex->dest_type;
|
|
|
|
tex->op = old_tex->op;
|
|
tex->coord_components = old_tex->coord_components;
|
|
tex->is_new_style_shadow = old_tex->is_new_style_shadow;
|
|
tex->component = old_tex->component;
|
|
|
|
tex->texture_index = old_tex->texture_index;
|
|
tex->sampler_index = old_tex->sampler_index;
|
|
tex->is_array = old_tex->is_array;
|
|
|
|
nir_def_init(&tex->instr, &tex->def, old_tex->def.num_components,
|
|
old_tex->def.bit_size);
|
|
nir_builder_instr_insert(b, &tex->instr);
|
|
|
|
return &tex->def;
|
|
}
|
|
|
|
static unsigned
|
|
swizzle_to_component(VkComponentSwizzle swizzle)
|
|
{
|
|
switch (swizzle) {
|
|
case VK_COMPONENT_SWIZZLE_R:
|
|
return 0;
|
|
case VK_COMPONENT_SWIZZLE_G:
|
|
return 1;
|
|
case VK_COMPONENT_SWIZZLE_B:
|
|
return 2;
|
|
case VK_COMPONENT_SWIZZLE_A:
|
|
return 3;
|
|
default:
|
|
unreachable("invalid channel");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
struct lower_ycbcr_tex_state {
|
|
nir_vk_ycbcr_conversion_lookup_cb cb;
|
|
const void *cb_data;
|
|
};
|
|
|
|
static bool
|
|
lower_ycbcr_tex_instr(nir_builder *b, nir_instr *instr, void *_state)
|
|
{
|
|
const struct lower_ycbcr_tex_state *state = _state;
|
|
|
|
if (instr->type != nir_instr_type_tex)
|
|
return false;
|
|
|
|
nir_tex_instr *tex = nir_instr_as_tex(instr);
|
|
|
|
/* For the following instructions, we don't apply any change and let the
|
|
* instruction apply to the first plane.
|
|
*/
|
|
if (tex->op == nir_texop_txs ||
|
|
tex->op == nir_texop_query_levels ||
|
|
tex->op == nir_texop_lod)
|
|
return false;
|
|
|
|
int deref_src_idx = nir_tex_instr_src_index(tex, nir_tex_src_texture_deref);
|
|
assert(deref_src_idx >= 0);
|
|
nir_deref_instr *deref = nir_src_as_deref(tex->src[deref_src_idx].src);
|
|
|
|
nir_variable *var = nir_deref_instr_get_variable(deref);
|
|
uint32_t set = var->data.descriptor_set;
|
|
uint32_t binding = var->data.binding;
|
|
|
|
assert(tex->texture_index == 0);
|
|
unsigned array_index = 0;
|
|
if (deref->deref_type != nir_deref_type_var) {
|
|
assert(deref->deref_type == nir_deref_type_array);
|
|
if (!nir_src_is_const(deref->arr.index))
|
|
return false;
|
|
array_index = nir_src_as_uint(deref->arr.index);
|
|
}
|
|
|
|
const struct vk_ycbcr_conversion_state *conversion =
|
|
state->cb(state->cb_data, set, binding, array_index);
|
|
if (conversion == NULL)
|
|
return false;
|
|
|
|
const struct vk_format_ycbcr_info *format_ycbcr_info =
|
|
vk_format_get_ycbcr_info(conversion->format);
|
|
|
|
/* This can happen if the driver hasn't done a good job of filtering on
|
|
* sampler creation and lets through a VkYcbcrConversion object which isn't
|
|
* actually YCbCr. We're supposed to ignore those.
|
|
*/
|
|
if (format_ycbcr_info == NULL)
|
|
return false;
|
|
|
|
b->cursor = nir_before_instr(&tex->instr);
|
|
|
|
VkFormat y_format = VK_FORMAT_UNDEFINED;
|
|
for (uint32_t p = 0; p < format_ycbcr_info->n_planes; p++) {
|
|
if (!format_ycbcr_info->planes[p].has_chroma)
|
|
y_format = format_ycbcr_info->planes[p].format;
|
|
}
|
|
assert(y_format != VK_FORMAT_UNDEFINED);
|
|
const struct util_format_description *y_format_desc =
|
|
util_format_description(vk_format_to_pipe_format(y_format));
|
|
uint8_t y_bpc = y_format_desc->channel[0].size;
|
|
|
|
/* |ycbcr_comp| holds components in the order : Cr-Y-Cb */
|
|
nir_def *zero = nir_imm_float(b, 0.0f);
|
|
nir_def *one = nir_imm_float(b, 1.0f);
|
|
/* Use extra 2 channels for following swizzle */
|
|
nir_def *ycbcr_comp[5] = { zero, zero, zero, one, zero };
|
|
|
|
uint8_t ycbcr_bpcs[5];
|
|
memset(ycbcr_bpcs, y_bpc, sizeof(ycbcr_bpcs));
|
|
|
|
/* Go through all the planes and gather the samples into a |ycbcr_comp|
|
|
* while applying a swizzle required by the spec:
|
|
*
|
|
* R, G, B should respectively map to Cr, Y, Cb
|
|
*/
|
|
for (uint32_t p = 0; p < format_ycbcr_info->n_planes; p++) {
|
|
const struct vk_format_ycbcr_plane *format_plane =
|
|
&format_ycbcr_info->planes[p];
|
|
|
|
struct ycbcr_state tex_state = {
|
|
.builder = b,
|
|
.origin_tex = tex,
|
|
.tex_deref = deref,
|
|
.conversion = conversion,
|
|
.format_ycbcr_info = format_ycbcr_info,
|
|
};
|
|
nir_def *plane_sample = create_plane_tex_instr_implicit(&tex_state, p);
|
|
|
|
for (uint32_t pc = 0; pc < 4; pc++) {
|
|
VkComponentSwizzle ycbcr_swizzle = format_plane->ycbcr_swizzle[pc];
|
|
if (ycbcr_swizzle == VK_COMPONENT_SWIZZLE_ZERO)
|
|
continue;
|
|
|
|
unsigned ycbcr_component = swizzle_to_component(ycbcr_swizzle);
|
|
ycbcr_comp[ycbcr_component] = nir_channel(b, plane_sample, pc);
|
|
|
|
/* Also compute the number of bits for each component. */
|
|
const struct util_format_description *plane_format_desc =
|
|
util_format_description(vk_format_to_pipe_format(format_plane->format));
|
|
ycbcr_bpcs[ycbcr_component] = plane_format_desc->channel[pc].size;
|
|
}
|
|
}
|
|
|
|
/* Now remaps components to the order specified by the conversion. */
|
|
nir_def *swizzled_comp[4] = { NULL, };
|
|
uint32_t swizzled_bpcs[4] = { 0, };
|
|
|
|
for (uint32_t i = 0; i < ARRAY_SIZE(conversion->mapping); i++) {
|
|
/* Maps to components in |ycbcr_comp| */
|
|
static const uint32_t swizzle_mapping[] = {
|
|
[VK_COMPONENT_SWIZZLE_ZERO] = 4,
|
|
[VK_COMPONENT_SWIZZLE_ONE] = 3,
|
|
[VK_COMPONENT_SWIZZLE_R] = 0,
|
|
[VK_COMPONENT_SWIZZLE_G] = 1,
|
|
[VK_COMPONENT_SWIZZLE_B] = 2,
|
|
[VK_COMPONENT_SWIZZLE_A] = 3,
|
|
};
|
|
const VkComponentSwizzle m = conversion->mapping[i];
|
|
|
|
if (m == VK_COMPONENT_SWIZZLE_IDENTITY) {
|
|
swizzled_comp[i] = ycbcr_comp[i];
|
|
swizzled_bpcs[i] = ycbcr_bpcs[i];
|
|
} else {
|
|
swizzled_comp[i] = ycbcr_comp[swizzle_mapping[m]];
|
|
swizzled_bpcs[i] = ycbcr_bpcs[swizzle_mapping[m]];
|
|
}
|
|
}
|
|
|
|
nir_def *result = nir_vec(b, swizzled_comp, 4);
|
|
if (conversion->ycbcr_model != VK_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY) {
|
|
result = nir_convert_ycbcr_to_rgb(b, conversion->ycbcr_model,
|
|
conversion->ycbcr_range,
|
|
result,
|
|
swizzled_bpcs);
|
|
}
|
|
|
|
nir_def_rewrite_uses(&tex->def, result);
|
|
nir_instr_remove(&tex->instr);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nir_vk_lower_ycbcr_tex(nir_shader *nir,
|
|
nir_vk_ycbcr_conversion_lookup_cb cb,
|
|
const void *cb_data)
|
|
{
|
|
struct lower_ycbcr_tex_state state = {
|
|
.cb = cb,
|
|
.cb_data = cb_data,
|
|
};
|
|
|
|
return nir_shader_instructions_pass(nir, lower_ycbcr_tex_instr,
|
|
nir_metadata_block_index |
|
|
nir_metadata_dominance,
|
|
&state);
|
|
}
|