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android / platform / external / mesa3d / 8c6cb15200c / . / src / mesa / state_tracker / st_pbo_compute.c
blob: 6895d8c4a6053eedd3db26b0d8cf8b841298b8c6 [file] [log] [blame]
/*
* Copyright © 2021 Valve 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.
*
* Authors:
* Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
*/
#include <stdbool.h>
#include "main/image.h"
#include "main/pbo.h"
#include "state_tracker/st_nir.h"
#include "state_tracker/st_format.h"
#include "state_tracker/st_pbo.h"
#include "state_tracker/st_texture.h"
#include "compiler/nir/nir_builder.h"
#include "compiler/nir/nir_format_convert.h"
#include "compiler/glsl/gl_nir.h"
#include "compiler/glsl/gl_nir_linker.h"
#include "util/u_sampler.h"
#define BGR_FORMAT(NAME) \
{{ \
[0] = PIPE_FORMAT_##NAME##_SNORM, \
[1] = PIPE_FORMAT_##NAME##_SINT, \
}, \
{ \
[0] = PIPE_FORMAT_##NAME##_UNORM, \
[1] = PIPE_FORMAT_##NAME##_UINT, \
}}
#define FORMAT(NAME, NAME16, NAME32) \
{{ \
[1] = PIPE_FORMAT_##NAME##_SNORM, \
[2] = PIPE_FORMAT_##NAME16##_SNORM, \
[4] = PIPE_FORMAT_##NAME32##_SNORM, \
}, \
{ \
[1] = PIPE_FORMAT_##NAME##_UNORM, \
[2] = PIPE_FORMAT_##NAME16##_UNORM, \
[4] = PIPE_FORMAT_##NAME32##_UNORM, \
}}
/* don't try these at home */
static enum pipe_format
get_convert_format(struct gl_context *ctx,
enum pipe_format src_format,
GLenum format, GLenum type,
bool *need_bgra_swizzle)
{
struct st_context *st = st_context(ctx);
GLint bpp = _mesa_bytes_per_pixel(format, type);
if (_mesa_is_depth_format(format) ||
format == GL_GREEN_INTEGER ||
format == GL_BLUE_INTEGER) {
switch (bpp) {
case 1:
return _mesa_is_type_unsigned(type) ? PIPE_FORMAT_R8_UINT : PIPE_FORMAT_R8_SINT;
case 2:
return _mesa_is_type_unsigned(type) ? PIPE_FORMAT_R16_UINT : PIPE_FORMAT_R16_SINT;
case 4:
return _mesa_is_type_unsigned(type) ? PIPE_FORMAT_R32_UINT : PIPE_FORMAT_R32_SINT;
}
}
mesa_format mformat = _mesa_tex_format_from_format_and_type(ctx, format, type);
enum pipe_format pformat = st_mesa_format_to_pipe_format(st, mformat);
if (!pformat) {
GLint dst_components = _mesa_components_in_format(format);
bpp /= dst_components;
if (format == GL_BGR || format == GL_BGRA) {
pformat = st_pbo_get_dst_format(ctx, PIPE_TEXTURE_2D, src_format, false, format == GL_BGR ? GL_RGB : GL_RGBA, type, 0);
if (!pformat)
pformat = get_convert_format(ctx, src_format, format == GL_BGR ? GL_RGB : GL_RGBA, type, need_bgra_swizzle);
assert(pformat);
*need_bgra_swizzle = true;
} else if (format == GL_BGR_INTEGER || format == GL_BGRA_INTEGER) {
pformat = st_pbo_get_dst_format(ctx, PIPE_TEXTURE_2D, src_format, false, format == GL_BGR_INTEGER ? GL_RGB_INTEGER : GL_RGBA_INTEGER, type, 0);
if (!pformat)
pformat = get_convert_format(ctx, src_format, format == GL_BGR_INTEGER ? GL_RGB_INTEGER : GL_RGBA_INTEGER, type, need_bgra_swizzle);
assert(pformat);
*need_bgra_swizzle = true;
} else {
/* [signed,unsigned][bpp] */
enum pipe_format rgb[5][2][5] = {
[1] = FORMAT(R8, R16, R32),
[2] = FORMAT(R8G8, R16G16, R32G32),
[3] = FORMAT(R8G8B8, R16G16B16, R32G32B32),
[4] = FORMAT(R8G8B8A8, R16G16B16A16, R32G32B32A32),
};
pformat = rgb[dst_components][_mesa_is_type_unsigned(type)][bpp];
}
assert(util_format_get_nr_components(pformat) == dst_components);
}
assert(pformat);
return pformat;
}
#undef BGR_FORMAT
#undef FORMAT
struct pbo_shader_data {
nir_ssa_def *offset;
nir_ssa_def *range;
nir_ssa_def *invert;
nir_ssa_def *blocksize;
nir_ssa_def *alignment;
nir_ssa_def *dst_bit_size;
nir_ssa_def *channels;
nir_ssa_def *normalized;
nir_ssa_def *integer;
nir_ssa_def *clamp_uint;
nir_ssa_def *r11g11b10_or_sint;
nir_ssa_def *r9g9b9e5;
nir_ssa_def *bits1;
nir_ssa_def *bits2;
nir_ssa_def *bits3;
nir_ssa_def *bits4;
nir_ssa_def *swap;
nir_ssa_def *bits; //vec4
};
/* must be under 16bytes / sizeof(vec4) / 128 bits) */
struct pbo_data {
union {
struct {
struct {
uint16_t x, y;
};
struct {
uint16_t width, height;
};
struct {
uint16_t depth;
uint8_t invert : 1;
uint8_t blocksize : 7;
uint8_t clamp_uint : 1;
uint8_t r11g11b10_or_sint : 1;
uint8_t r9g9b9e5 : 1;
uint8_t swap : 1;
uint16_t alignment : 2;
uint8_t dst_bit_size : 2; //8, 16, 32, 64
};
struct {
uint8_t channels : 2;
uint8_t bits1 : 6;
uint8_t normalized : 1;
uint8_t integer : 1;
uint8_t bits2 : 6;
uint8_t bits3 : 6;
uint8_t pad1 : 2;
uint8_t bits4 : 6;
uint8_t pad2 : 2;
};
};
float vec[4];
};
};
#define STRUCT_OFFSET(name) (offsetof(struct pbo_data, name) * 8)
#define STRUCT_BLOCK(offset, ...) \
do { \
assert(offset % 8 == 0); \
nir_ssa_def *block##offset = nir_u2u32(b, nir_extract_bits(b, &ubo_load, 1, (offset), 1, 8)); \
__VA_ARGS__ \
} while (0)
#define STRUCT_MEMBER(blockoffset, name, offset, size, op, clamp) \
do { \
assert(offset + size <= 8); \
nir_ssa_def *val = nir_iand_imm(b, block##blockoffset, u_bit_consecutive(offset, size)); \
if (offset) \
val = nir_ushr_imm(b, val, offset); \
sd->name = op; \
if (clamp) \
sd->name = nir_umin(b, sd->name, nir_imm_int(b, clamp)); \
} while (0)
#define STRUCT_MEMBER_SHIFTED_2BIT(blockoffset, name, offset, shift, clamp) \
STRUCT_MEMBER(blockoffset, name, offset, 2, nir_ishl(b, nir_imm_int(b, shift), val), clamp)
#define STRUCT_MEMBER_BOOL(blockoffset, name, offset) \
STRUCT_MEMBER(blockoffset, name, offset, 1, nir_ieq_imm(b, val, 1), 0)
/* this function extracts the conversion data from pbo_data using the
* size annotations for each grouping. data is compacted into bitfields,
* so bitwise operations must be used to "unpact" everything
*/
static void
init_pbo_shader_data(nir_builder *b, struct pbo_shader_data *sd)
{
nir_variable *ubo = nir_variable_create(b->shader, nir_var_uniform, glsl_uvec4_type(), "offset");
nir_ssa_def *ubo_load = nir_load_var(b, ubo);
sd->offset = nir_umin(b, nir_u2u32(b, nir_extract_bits(b, &ubo_load, 1, STRUCT_OFFSET(x), 2, 16)), nir_imm_int(b, 65535));
sd->range = nir_umin(b, nir_u2u32(b, nir_extract_bits(b, &ubo_load, 1, STRUCT_OFFSET(width), 3, 16)), nir_imm_int(b, 65535));
STRUCT_BLOCK(80,
STRUCT_MEMBER_BOOL(80, invert, 0);
STRUCT_MEMBER(80, blocksize, 1, 7, nir_iadd_imm(b, val, 1), 128);
);
STRUCT_BLOCK(88,
STRUCT_MEMBER_BOOL(88, clamp_uint, 0);
STRUCT_MEMBER_BOOL(88, r11g11b10_or_sint, 1);
STRUCT_MEMBER_BOOL(88, r9g9b9e5, 2);
STRUCT_MEMBER_BOOL(88, swap, 3);
STRUCT_MEMBER_SHIFTED_2BIT(88, alignment, 4, 1, 8);
STRUCT_MEMBER_SHIFTED_2BIT(88, dst_bit_size, 6, 8, 64);
);
STRUCT_BLOCK(96,
STRUCT_MEMBER(96, channels, 0, 2, nir_iadd_imm(b, val, 1), 4);
STRUCT_MEMBER(96, bits1, 2, 6, val, 32);
);
STRUCT_BLOCK(104,
STRUCT_MEMBER_BOOL(104, normalized, 0);
STRUCT_MEMBER_BOOL(104, integer, 1);
STRUCT_MEMBER(104, bits2, 2, 6, val, 32);
);
STRUCT_BLOCK(112,
STRUCT_MEMBER(112, bits3, 0, 6, val, 32);
);
STRUCT_BLOCK(120,
STRUCT_MEMBER(120, bits4, 0, 6, val, 32);
);
sd->bits = nir_vec4(b, sd->bits1, sd->bits2, sd->bits3, sd->bits4);
/* clamp swap in the shader to enable better optimizing */
/* TODO?
sd->swap = nir_bcsel(b, nir_ior(b,
nir_ieq_imm(b, sd->blocksize, 8),
nir_bcsel(b,
nir_ieq_imm(b, sd->bits1, 8),
nir_bcsel(b,
nir_uge(b, sd->channels, nir_imm_int(b, 2)),
nir_bcsel(b,
nir_uge(b, sd->channels, nir_imm_int(b, 3)),
nir_bcsel(b,
nir_ieq(b, sd->channels, nir_imm_int(b, 4)),
nir_ball(b, nir_ieq(b, sd->bits, nir_imm_ivec4(b, 8, 8, 8, 8))),
nir_ball(b, nir_ieq(b, nir_channels(b, sd->bits, 7), nir_imm_ivec3(b, 8, 8, 8)))),
nir_ball(b, nir_ieq(b, nir_channels(b, sd->bits, 3), nir_imm_ivec2(b, 8, 8)))),
nir_imm_bool(b, 0)),
nir_imm_bool(b, 0))),
nir_imm_bool(b, 0),
sd->swap);
*/
}
static unsigned
fill_pbo_data(struct pbo_data *pd, enum pipe_format src_format, enum pipe_format dst_format, bool swap)
{
unsigned bits[4] = {0};
bool weird_packed = false;
const struct util_format_description *dst_desc = util_format_description(dst_format);
bool is_8bit = true;
for (unsigned c = 0; c < 4; c++) {
bits[c] = dst_desc->channel[c].size;
if (c < dst_desc->nr_channels) {
weird_packed |= bits[c] != bits[0] || bits[c] % 8 != 0;
if (bits[c] != 8)
is_8bit = false;
}
}
if (is_8bit || dst_desc->block.bits == 8)
swap = false;
unsigned dst_bit_size = 0;
if (weird_packed) {
dst_bit_size = dst_desc->block.bits;
} else {
dst_bit_size = dst_desc->block.bits / dst_desc->nr_channels;
}
assert(dst_bit_size);
assert(dst_bit_size <= 64);
pd->dst_bit_size = dst_bit_size >> 4;
pd->channels = dst_desc->nr_channels - 1;
pd->normalized = dst_desc->is_unorm || dst_desc->is_snorm;
pd->clamp_uint = dst_desc->is_unorm ||
(util_format_is_pure_sint(dst_format) &&
!util_format_is_pure_sint(src_format) &&
!util_format_is_snorm(src_format)) ||
util_format_is_pure_uint(dst_format);
pd->integer = util_format_is_pure_uint(dst_format) || util_format_is_pure_sint(dst_format);
pd->r11g11b10_or_sint = dst_format == PIPE_FORMAT_R11G11B10_FLOAT || util_format_is_pure_sint(dst_format);
pd->r9g9b9e5 = dst_format == PIPE_FORMAT_R9G9B9E5_FLOAT;
pd->bits1 = bits[0];
pd->bits2 = bits[1];
pd->bits3 = bits[2];
pd->bits4 = bits[3];
pd->swap = swap;
return weird_packed ? 1 : dst_desc->nr_channels;
}
static nir_ssa_def *
get_buffer_offset(nir_builder *b, nir_ssa_def *coord, struct pbo_shader_data *sd)
{
/* from _mesa_image_offset():
offset = topOfImage
+ (skippixels + column) * bytes_per_pixel
+ (skiprows + row) * bytes_per_row
+ (skipimages + img) * bytes_per_image;
*/
nir_ssa_def *bytes_per_row = nir_imul(b, nir_channel(b, sd->range, 0), sd->blocksize);
bytes_per_row = nir_bcsel(b, nir_ult(b, sd->alignment, nir_imm_int(b, 2)),
bytes_per_row,
nir_iand(b,
nir_isub(b, nir_iadd(b, bytes_per_row, sd->alignment), nir_imm_int(b, 1)),
nir_inot(b, nir_isub(b, sd->alignment, nir_imm_int(b, 1)))));
nir_ssa_def *bytes_per_image = nir_imul(b, bytes_per_row, nir_channel(b, sd->range, 1));
bytes_per_row = nir_bcsel(b, sd->invert,
nir_isub(b, nir_imm_int(b, 0), bytes_per_row),
bytes_per_row);
return nir_iadd(b,
nir_imul(b, nir_channel(b, coord, 0), sd->blocksize),
nir_iadd(b,
nir_imul(b, nir_channel(b, coord, 1), bytes_per_row),
nir_imul(b, nir_channel(b, coord, 2), bytes_per_image)));
}
static inline void
write_ssbo(nir_builder *b, nir_ssa_def *pixel, nir_ssa_def *buffer_offset)
{
nir_store_ssbo(b, pixel, nir_imm_zero(b, 1, 32), buffer_offset,
.align_mul = pixel->bit_size / 8,
.write_mask = (1 << pixel->num_components) - 1);
}
static void
write_conversion(nir_builder *b, nir_ssa_def *pixel, nir_ssa_def *buffer_offset, struct pbo_shader_data *sd)
{
nir_push_if(b, nir_ilt(b, sd->dst_bit_size, nir_imm_int(b, 32)));
nir_push_if(b, nir_ieq_imm(b, sd->dst_bit_size, 16));
write_ssbo(b, nir_u2u16(b, pixel), buffer_offset);
nir_push_else(b, NULL);
write_ssbo(b, nir_u2u8(b, pixel), buffer_offset);
nir_pop_if(b, NULL);
nir_push_else(b, NULL);
write_ssbo(b, pixel, buffer_offset);
nir_pop_if(b, NULL);
}
static nir_ssa_def *
swap2(nir_builder *b, nir_ssa_def *src)
{
/* dst[i] = (src[i] >> 8) | ((src[i] << 8) & 0xff00); */
return nir_ior(b,
nir_ushr_imm(b, src, 8),
nir_iand_imm(b, nir_ishl(b, src, nir_imm_int(b, 8)), 0xff00));
}
static nir_ssa_def *
swap4(nir_builder *b, nir_ssa_def *src)
{
/* a = (b >> 24) | ((b >> 8) & 0xff00) | ((b << 8) & 0xff0000) | ((b << 24) & 0xff000000); */
return nir_ior(b,
/* (b >> 24) */
nir_ushr_imm(b, src, 24),
nir_ior(b,
/* ((b >> 8) & 0xff00) */
nir_iand(b, nir_ushr_imm(b, src, 8), nir_imm_int(b, 0xff00)),
nir_ior(b,
/* ((b << 8) & 0xff0000) */
nir_iand(b, nir_ishl(b, src, nir_imm_int(b, 8)), nir_imm_int(b, 0xff0000)),
/* ((b << 24) & 0xff000000) */
nir_iand(b, nir_ishl(b, src, nir_imm_int(b, 24)), nir_imm_int(b, 0xff000000)))));
}
/* explode the cf to handle channel counts in the shader */
static void
grab_components(nir_builder *b, nir_ssa_def *pixel, nir_ssa_def *buffer_offset, struct pbo_shader_data *sd, bool weird_packed)
{
if (weird_packed) {
nir_push_if(b, nir_ieq_imm(b, sd->bits1, 32));
write_conversion(b, nir_channels(b, pixel, 3), buffer_offset, sd);
nir_push_else(b, NULL);
write_conversion(b, nir_channel(b, pixel, 0), buffer_offset, sd);
nir_pop_if(b, NULL);
} else {
nir_push_if(b, nir_ieq_imm(b, sd->channels, 1));
write_conversion(b, nir_channel(b, pixel, 0), buffer_offset, sd);
nir_push_else(b, NULL);
nir_push_if(b, nir_ieq_imm(b, sd->channels, 2));
write_conversion(b, nir_channels(b, pixel, (1 << 2) - 1), buffer_offset, sd);
nir_push_else(b, NULL);
nir_push_if(b, nir_ieq_imm(b, sd->channels, 3));
write_conversion(b, nir_channels(b, pixel, (1 << 3) - 1), buffer_offset, sd);
nir_push_else(b, NULL);
write_conversion(b, nir_channels(b, pixel, (1 << 4) - 1), buffer_offset, sd);
nir_pop_if(b, NULL);
nir_pop_if(b, NULL);
nir_pop_if(b, NULL);
}
}
/* if byteswap is enabled, handle that and then write the components */
static void
handle_swap(nir_builder *b, nir_ssa_def *pixel, nir_ssa_def *buffer_offset,
struct pbo_shader_data *sd, unsigned num_components, bool weird_packed)
{
nir_push_if(b, sd->swap); {
nir_push_if(b, nir_ieq_imm(b, nir_udiv_imm(b, sd->blocksize, num_components), 2)); {
/* this is a single high/low swap per component */
nir_ssa_def *components[4];
for (unsigned i = 0; i < 4; i++)
components[i] = swap2(b, nir_channel(b, pixel, i));
nir_ssa_def *v = nir_vec(b, components, 4);
grab_components(b, v, buffer_offset, sd, weird_packed);
} nir_push_else(b, NULL); {
/* this is a pair of high/low swaps for each half of the component */
nir_ssa_def *components[4];
for (unsigned i = 0; i < 4; i++)
components[i] = swap4(b, nir_channel(b, pixel, i));
nir_ssa_def *v = nir_vec(b, components, 4);
grab_components(b, v, buffer_offset, sd, weird_packed);
} nir_pop_if(b, NULL);
} nir_push_else(b, NULL); {
/* swap disabled */
grab_components(b, pixel, buffer_offset, sd, weird_packed);
} nir_pop_if(b, NULL);
}
static nir_ssa_def *
check_for_weird_packing(nir_builder *b, struct pbo_shader_data *sd, unsigned component)
{
nir_ssa_def *c = nir_channel(b, sd->bits, component - 1);
return nir_bcsel(b,
nir_ige(b, sd->channels, nir_imm_int(b, component)),
nir_ior(b,
nir_ine(b, c, sd->bits1),
nir_ine(b, nir_imod(b, c, nir_imm_int(b, 8)), nir_imm_int(b, 0))),
nir_imm_bool(b, 0));
}
/* convenience function for clamping signed integers */
static inline nir_ssa_def *
nir_imin_imax(nir_builder *build, nir_ssa_def *src, nir_ssa_def *clamp_to_min, nir_ssa_def *clamp_to_max)
{
return nir_imax(build, nir_imin(build, src, clamp_to_min), clamp_to_max);
}
static inline nir_ssa_def *
nir_format_float_to_unorm_with_factor(nir_builder *b, nir_ssa_def *f, nir_ssa_def *factor)
{
/* Clamp to the range [0, 1] */
f = nir_fsat(b, f);
return nir_f2u32(b, nir_fround_even(b, nir_fmul(b, f, factor)));
}
static inline nir_ssa_def *
nir_format_float_to_snorm_with_factor(nir_builder *b, nir_ssa_def *f, nir_ssa_def *factor)
{
/* Clamp to the range [-1, 1] */
f = nir_fmin(b, nir_fmax(b, f, nir_imm_float(b, -1)), nir_imm_float(b, 1));
return nir_f2i32(b, nir_fround_even(b, nir_fmul(b, f, factor)));
}
static nir_ssa_def *
clamp_and_mask(nir_builder *b, nir_ssa_def *src, nir_ssa_def *channels)
{
nir_ssa_def *one = nir_imm_ivec4(b, 1, 0, 0, 0);
nir_ssa_def *two = nir_imm_ivec4(b, 1, 1, 0, 0);
nir_ssa_def *three = nir_imm_ivec4(b, 1, 1, 1, 0);
nir_ssa_def *four = nir_imm_ivec4(b, 1, 1, 1, 1);
/* avoid underflow by clamping to channel count */
src = nir_bcsel(b,
nir_ieq(b, channels, one),
nir_isub(b, src, one),
nir_bcsel(b,
nir_ieq_imm(b, channels, 2),
nir_isub(b, src, two),
nir_bcsel(b,
nir_ieq_imm(b, channels, 3),
nir_isub(b, src, three),
nir_isub(b, src, four))));
return nir_mask(b, src, 32);
}
static void
convert_swap_write(nir_builder *b, nir_ssa_def *pixel, nir_ssa_def *buffer_offset,
unsigned num_components,
struct pbo_shader_data *sd)
{
nir_ssa_def *weird_packed = nir_ior(b,
nir_ior(b,
check_for_weird_packing(b, sd, 4),
check_for_weird_packing(b, sd, 3)),
check_for_weird_packing(b, sd, 2));
if (num_components == 1) {
nir_push_if(b, weird_packed);
nir_push_if(b, sd->r11g11b10_or_sint);
handle_swap(b, nir_pad_vec4(b, nir_format_pack_11f11f10f(b, pixel)), buffer_offset, sd, 1, true);
nir_push_else(b, NULL);
nir_push_if(b, sd->r9g9b9e5);
handle_swap(b, nir_pad_vec4(b, nir_format_pack_r9g9b9e5(b, pixel)), buffer_offset, sd, 1, true);
nir_push_else(b, NULL);
nir_push_if(b, nir_ieq_imm(b, sd->bits1, 32)); { //PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
nir_ssa_def *pack[2];
pack[0] = nir_format_pack_uint_unmasked_ssa(b, nir_channel(b, pixel, 0), nir_channel(b, sd->bits, 0));
pack[1] = nir_format_pack_uint_unmasked_ssa(b, nir_channels(b, pixel, 6), nir_channels(b, sd->bits, 6));
handle_swap(b, nir_pad_vec4(b, nir_vec2(b, pack[0], pack[1])), buffer_offset, sd, 2, true);
} nir_push_else(b, NULL);
handle_swap(b, nir_pad_vec4(b, nir_format_pack_uint_unmasked_ssa(b, pixel, sd->bits)), buffer_offset, sd, 1, true);
nir_pop_if(b, NULL);
nir_pop_if(b, NULL);
nir_pop_if(b, NULL);
nir_push_else(b, NULL);
handle_swap(b, pixel, buffer_offset, sd, num_components, false);
nir_pop_if(b, NULL);
} else {
nir_push_if(b, weird_packed);
handle_swap(b, pixel, buffer_offset, sd, num_components, true);
nir_push_else(b, NULL);
handle_swap(b, pixel, buffer_offset, sd, num_components, false);
nir_pop_if(b, NULL);
}
}
static void
do_shader_conversion(nir_builder *b, nir_ssa_def *pixel,
unsigned num_components,
nir_ssa_def *coord, struct pbo_shader_data *sd)
{
nir_ssa_def *buffer_offset = get_buffer_offset(b, coord, sd);
nir_ssa_def *signed_bit_mask = clamp_and_mask(b, sd->bits, sd->channels);
#define CONVERT_SWAP_WRITE(PIXEL) \
convert_swap_write(b, PIXEL, buffer_offset, num_components, sd);
nir_push_if(b, sd->normalized);
nir_push_if(b, sd->clamp_uint); //unorm
CONVERT_SWAP_WRITE(nir_format_float_to_unorm_with_factor(b, pixel, nir_u2f32(b, nir_mask(b, sd->bits, 32))));
nir_push_else(b, NULL);
CONVERT_SWAP_WRITE(nir_format_float_to_snorm_with_factor(b, pixel, nir_u2f32(b, signed_bit_mask)));
nir_pop_if(b, NULL);
nir_push_else(b, NULL);
nir_push_if(b, sd->integer);
nir_push_if(b, sd->r11g11b10_or_sint); //sint
nir_push_if(b, sd->clamp_uint); //uint -> sint
CONVERT_SWAP_WRITE(nir_umin(b, pixel, signed_bit_mask));
nir_push_else(b, NULL);
CONVERT_SWAP_WRITE(nir_imin_imax(b, pixel, signed_bit_mask, nir_isub(b, nir_ineg(b, signed_bit_mask), nir_imm_int(b, 1))));
nir_pop_if(b, NULL);
nir_push_else(b, NULL);
nir_push_if(b, sd->clamp_uint); //uint
/* nir_format_clamp_uint */
CONVERT_SWAP_WRITE(nir_umin(b, pixel, nir_mask(b, sd->bits, 32)));
nir_pop_if(b, NULL);
nir_pop_if(b, NULL);
nir_push_else(b, NULL);
nir_push_if(b, nir_ieq_imm(b, sd->bits1, 16)); //half
CONVERT_SWAP_WRITE(nir_format_float_to_half(b, pixel));
nir_push_else(b, NULL);
CONVERT_SWAP_WRITE(pixel);
nir_pop_if(b, NULL);
nir_pop_if(b, NULL);
}
static void *
create_conversion_shader(struct st_context *st, enum pipe_texture_target target, unsigned num_components)
{
const nir_shader_compiler_options *options = st_get_nir_compiler_options(st, MESA_SHADER_COMPUTE);
nir_builder b = nir_builder_init_simple_shader(MESA_SHADER_COMPUTE, options, "%s", "convert");
b.shader->info.workgroup_size[0] = target != PIPE_TEXTURE_1D ? 8 : 64;
b.shader->info.workgroup_size[1] = target != PIPE_TEXTURE_1D ? 8 : 1;
b.shader->info.workgroup_size[2] = 1;
b.shader->info.textures_used[0] = 1;
b.shader->info.num_ssbos = 1;
b.shader->num_uniforms = 2;
nir_variable_create(b.shader, nir_var_mem_ssbo, glsl_array_type(glsl_float_type(), 0, 4), "ssbo");
nir_variable *sampler = nir_variable_create(b.shader, nir_var_uniform, st_pbo_sampler_type_for_target(target, ST_PBO_CONVERT_FLOAT), "sampler");
unsigned coord_components = glsl_get_sampler_coordinate_components(sampler->type);
sampler->data.explicit_binding = 1;
struct pbo_shader_data sd;
init_pbo_shader_data(&b, &sd);
nir_ssa_def *bsize = nir_imm_ivec4(&b,
b.shader->info.workgroup_size[0],
b.shader->info.workgroup_size[1],
b.shader->info.workgroup_size[2],
0);
nir_ssa_def *wid = nir_load_workgroup_id(&b, 32);
nir_ssa_def *iid = nir_load_local_invocation_id(&b);
nir_ssa_def *tile = nir_imul(&b, wid, bsize);
nir_ssa_def *global_id = nir_iadd(&b, tile, iid);
nir_ssa_def *start = nir_iadd(&b, global_id, sd.offset);
nir_ssa_def *coord = nir_channels(&b, start, (1<<coord_components)-1);
nir_ssa_def *max = nir_iadd(&b, sd.offset, sd.range);
nir_push_if(&b, nir_ball(&b, nir_ilt(&b, coord, nir_channels(&b, max, (1<<coord_components)-1))));
nir_tex_instr *txf = nir_tex_instr_create(b.shader, 3);
txf->is_array = glsl_sampler_type_is_array(sampler->type);
txf->op = nir_texop_txf;
txf->sampler_dim = glsl_get_sampler_dim(sampler->type);
txf->dest_type = nir_type_float32;
txf->coord_components = coord_components;
txf->texture_index = 0;
txf->sampler_index = 0;
txf->src[0].src_type = nir_tex_src_coord;
txf->src[0].src = nir_src_for_ssa(coord);
txf->src[1].src_type = nir_tex_src_lod;
txf->src[1].src = nir_src_for_ssa(nir_imm_int(&b, 0));
txf->src[2].src_type = nir_tex_src_texture_deref;
nir_deref_instr *sampler_deref = nir_build_deref_var(&b, sampler);
txf->src[2].src = nir_src_for_ssa(&sampler_deref->dest.ssa);
nir_ssa_dest_init(&txf->instr, &txf->dest, 4, 32, NULL);
nir_builder_instr_insert(&b, &txf->instr);
/* pass the grid offset as the coord to get the zero-indexed buffer offset */
do_shader_conversion(&b, &txf->dest.ssa, num_components, global_id, &sd);
nir_pop_if(&b, NULL);
nir_validate_shader(b.shader, NULL);
gl_nir_opts(b.shader);
return st_nir_finish_builtin_shader(st, b.shader);
}
static void
invert_swizzle(uint8_t *out, const uint8_t *in)
{
/* First, default to all zeroes to prevent uninitialized junk */
for (unsigned c = 0; c < 4; ++c)
out[c] = PIPE_SWIZZLE_0;
/* Now "do" what the swizzle says */
for (unsigned c = 0; c < 4; ++c) {
unsigned char i = in[c];
/* Who cares? */
assert(PIPE_SWIZZLE_X == 0);
if (i > PIPE_SWIZZLE_W)
continue;
/* Invert */
unsigned idx = i - PIPE_SWIZZLE_X;
out[idx] = PIPE_SWIZZLE_X + c;
}
}
static uint32_t
compute_shader_key(enum pipe_texture_target target, unsigned num_components)
{
uint8_t key_target[] = {
[PIPE_BUFFER] = UINT8_MAX,
[PIPE_TEXTURE_1D] = 1,
[PIPE_TEXTURE_2D] = 2,
[PIPE_TEXTURE_3D] = 3,
[PIPE_TEXTURE_CUBE] = 4,
[PIPE_TEXTURE_RECT] = UINT8_MAX,
[PIPE_TEXTURE_1D_ARRAY] = 5,
[PIPE_TEXTURE_2D_ARRAY] = 6,
[PIPE_TEXTURE_CUBE_ARRAY] = UINT8_MAX,
};
assert(target < ARRAY_SIZE(key_target));
assert(key_target[target] != UINT8_MAX);
return key_target[target] | (num_components << 3);
}
static unsigned
get_dim_from_target(enum pipe_texture_target target)
{
switch (target) {
case PIPE_TEXTURE_1D:
return 1;
case PIPE_TEXTURE_2D_ARRAY:
case PIPE_TEXTURE_3D:
return 3;
default:
return 2;
}
}
static enum pipe_texture_target
get_target_from_texture(struct pipe_resource *src)
{
enum pipe_texture_target view_target;
switch (src->target) {
case PIPE_TEXTURE_RECT:
view_target = PIPE_TEXTURE_2D;
break;
case PIPE_TEXTURE_CUBE:
case PIPE_TEXTURE_CUBE_ARRAY:
view_target = PIPE_TEXTURE_2D_ARRAY;
break;
default:
view_target = src->target;
break;
}
return view_target;
}
/* force swizzling behavior for sampling */
enum swizzle_clamp {
/* force component selection for named format */
SWIZZLE_CLAMP_LUMINANCE = 1,
SWIZZLE_CLAMP_ALPHA = 2,
SWIZZLE_CLAMP_LUMINANCE_ALPHA = 3,
SWIZZLE_CLAMP_INTENSITY = 4,
SWIZZLE_CLAMP_RGBX = 5,
/* select only 1 component */
SWIZZLE_CLAMP_GREEN = 8,
SWIZZLE_CLAMP_BLUE = 16,
/* reverse ordering for format emulation */
SWIZZLE_CLAMP_BGRA = 32,
};
static struct pipe_resource *
download_texture_compute(struct st_context *st,
const struct gl_pixelstore_attrib *pack,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLint depth,
unsigned level, unsigned layer,
GLenum format, GLenum type,
enum pipe_format src_format,
enum pipe_texture_target view_target,
struct pipe_resource *src,
enum pipe_format dst_format,
enum swizzle_clamp swizzle_clamp)
{
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = st->screen;
struct pipe_resource *dst = NULL;
unsigned dim = get_dim_from_target(view_target);
/* clamp 3d offsets based on slice */
if (view_target == PIPE_TEXTURE_3D)
zoffset += layer;
unsigned num_components = 0;
/* Upload constants */
{
struct pipe_constant_buffer cb;
assert(view_target != PIPE_TEXTURE_1D_ARRAY || !yoffset);
struct pbo_data pd = {
.x = xoffset,
.y = yoffset,
.width = width, .height = height, .depth = depth,
.invert = pack->Invert,
.blocksize = util_format_get_blocksize(dst_format) - 1,
.alignment = ffs(MAX2(pack->Alignment, 1)) - 1,
};
num_components = fill_pbo_data(&pd, src_format, dst_format, pack->SwapBytes == 1);
cb.buffer = NULL;
cb.user_buffer = &pd;
cb.buffer_offset = 0;
cb.buffer_size = sizeof(pd);
pipe->set_constant_buffer(pipe, PIPE_SHADER_COMPUTE, 0, false, &cb);
}
uint32_t hash_key = compute_shader_key(view_target, num_components);
assert(hash_key != 0);
struct hash_entry *he = _mesa_hash_table_search(st->pbo.shaders, (void*)(uintptr_t)hash_key);
void *cs;
if (!he) {
cs = create_conversion_shader(st, view_target, num_components);
he = _mesa_hash_table_insert(st->pbo.shaders, (void*)(uintptr_t)hash_key, cs);
}
cs = he->data;
assert(cs);
struct cso_context *cso = st->cso_context;
cso_save_compute_state(cso, CSO_BIT_COMPUTE_SHADER | CSO_BIT_COMPUTE_SAMPLERS);
cso_set_compute_shader_handle(cso, cs);
/* Set up the sampler_view */
{
struct pipe_sampler_view templ;
struct pipe_sampler_view *sampler_view;
struct pipe_sampler_state sampler = {0};
const struct pipe_sampler_state *samplers[1] = {&sampler};
const struct util_format_description *desc = util_format_description(dst_format);
u_sampler_view_default_template(&templ, src, src_format);
if (util_format_is_depth_or_stencil(dst_format)) {
templ.swizzle_r = PIPE_SWIZZLE_X;
templ.swizzle_g = PIPE_SWIZZLE_X;
templ.swizzle_b = PIPE_SWIZZLE_X;
templ.swizzle_a = PIPE_SWIZZLE_X;
} else {
uint8_t invswizzle[4];
const uint8_t *swizzle;
/* these swizzle output bits require explicit component selection/ordering */
if (swizzle_clamp & SWIZZLE_CLAMP_GREEN) {
for (unsigned i = 0; i < 4; i++)
invswizzle[i] = PIPE_SWIZZLE_Y;
} else if (swizzle_clamp & SWIZZLE_CLAMP_BLUE) {
for (unsigned i = 0; i < 4; i++)
invswizzle[i] = PIPE_SWIZZLE_Z;
} else {
if (swizzle_clamp & SWIZZLE_CLAMP_BGRA) {
if (util_format_get_nr_components(dst_format) == 3)
swizzle = util_format_description(PIPE_FORMAT_B8G8R8_UNORM)->swizzle;
else
swizzle = util_format_description(PIPE_FORMAT_B8G8R8A8_UNORM)->swizzle;
} else {
swizzle = desc->swizzle;
}
invert_swizzle(invswizzle, swizzle);
}
swizzle_clamp &= ~(SWIZZLE_CLAMP_BGRA | SWIZZLE_CLAMP_GREEN | SWIZZLE_CLAMP_BLUE);
/* these swizzle input modes clamp unused components to 0 and (sometimes) alpha to 1 */
switch (swizzle_clamp) {
case SWIZZLE_CLAMP_LUMINANCE:
if (util_format_is_luminance(dst_format))
break;
for (unsigned i = 0; i < 4; i++) {
if (invswizzle[i] != PIPE_SWIZZLE_X)
invswizzle[i] = invswizzle[i] == PIPE_SWIZZLE_W ? PIPE_SWIZZLE_1 : PIPE_SWIZZLE_0;
}
break;
case SWIZZLE_CLAMP_ALPHA:
for (unsigned i = 0; i < 4; i++) {
if (invswizzle[i] != PIPE_SWIZZLE_W)
invswizzle[i] = PIPE_SWIZZLE_0;
}
break;
case SWIZZLE_CLAMP_LUMINANCE_ALPHA:
if (util_format_is_luminance_alpha(dst_format))
break;
for (unsigned i = 0; i < 4; i++) {
if (invswizzle[i] != PIPE_SWIZZLE_X && invswizzle[i] != PIPE_SWIZZLE_W)
invswizzle[i] = PIPE_SWIZZLE_0;
}
break;
case SWIZZLE_CLAMP_INTENSITY:
for (unsigned i = 0; i < 4; i++) {
if (invswizzle[i] == PIPE_SWIZZLE_W)
invswizzle[i] = PIPE_SWIZZLE_1;
else if (invswizzle[i] != PIPE_SWIZZLE_X)
invswizzle[i] = PIPE_SWIZZLE_0;
}
break;
case SWIZZLE_CLAMP_RGBX:
for (unsigned i = 0; i < 4; i++) {
if (invswizzle[i] == PIPE_SWIZZLE_W)
invswizzle[i] = PIPE_SWIZZLE_1;
}
break;
default: break;
}
templ.swizzle_r = invswizzle[0];
templ.swizzle_g = invswizzle[1];
templ.swizzle_b = invswizzle[2];
templ.swizzle_a = invswizzle[3];
}
templ.target = view_target;
templ.u.tex.first_level = level;
templ.u.tex.last_level = level;
/* array textures expect to have array index provided */
if (view_target != PIPE_TEXTURE_3D && src->array_size) {
templ.u.tex.first_layer = layer;
if (view_target == PIPE_TEXTURE_1D_ARRAY) {
templ.u.tex.first_layer += yoffset;
templ.u.tex.last_layer = templ.u.tex.first_layer + height - 1;
} else {
templ.u.tex.first_layer += zoffset;
templ.u.tex.last_layer = templ.u.tex.first_layer + depth - 1;
}
}
sampler_view = pipe->create_sampler_view(pipe, src, &templ);
if (sampler_view == NULL)
goto fail;
pipe->set_sampler_views(pipe, PIPE_SHADER_COMPUTE, 0, 1, 0, false,
&sampler_view);
st->state.num_sampler_views[PIPE_SHADER_COMPUTE] =
MAX2(st->state.num_sampler_views[PIPE_SHADER_COMPUTE], 1);
pipe_sampler_view_reference(&sampler_view, NULL);
cso_set_samplers(cso, PIPE_SHADER_COMPUTE, 1, samplers);
}
/* Set up destination buffer */
unsigned img_stride = _mesa_image_image_stride(pack, width, height, format, type);
unsigned buffer_size = (depth + (dim == 3 ? pack->SkipImages : 0)) * img_stride;
{
dst = pipe_buffer_create(screen, PIPE_BIND_SHADER_BUFFER, PIPE_USAGE_STAGING, buffer_size);
if (!dst)
goto fail;
struct pipe_shader_buffer buffer;
memset(&buffer, 0, sizeof(buffer));
buffer.buffer = dst;
buffer.buffer_size = buffer_size;
pipe->set_shader_buffers(pipe, PIPE_SHADER_COMPUTE, 0, 1, &buffer, 0x1);
}
struct pipe_grid_info info = { 0 };
info.block[0] = src->target != PIPE_TEXTURE_1D ? 8 : 64;
info.block[1] = src->target != PIPE_TEXTURE_1D ? 8 : 1;
info.last_block[0] = width % info.block[0];
info.last_block[1] = height % info.block[1];
info.block[2] = 1;
info.grid[0] = DIV_ROUND_UP(width, info.block[0]);
info.grid[1] = DIV_ROUND_UP(height, info.block[1]);
info.grid[2] = depth;
pipe->launch_grid(pipe, &info);
fail:
cso_restore_compute_state(cso);
/* Unbind all because st/mesa won't do it if the current shader doesn't
* use them.
*/
pipe->set_sampler_views(pipe, PIPE_SHADER_COMPUTE, 0, 0, false,
st->state.num_sampler_views[PIPE_SHADER_COMPUTE],
NULL);
st->state.num_sampler_views[PIPE_SHADER_COMPUTE] = 0;
pipe->set_shader_buffers(pipe, PIPE_SHADER_COMPUTE, 0, 1, NULL, 0);
st->dirty |= ST_NEW_CS_CONSTANTS |
ST_NEW_CS_SSBOS |
ST_NEW_CS_SAMPLER_VIEWS;
return dst;
}
static void
copy_converted_buffer(struct gl_context * ctx,
struct gl_pixelstore_attrib *pack,
enum pipe_texture_target view_target,
struct pipe_resource *dst, enum pipe_format dst_format,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLint depth,
GLenum format, GLenum type, void *pixels)
{
struct pipe_transfer *xfer;
struct st_context *st = st_context(ctx);
unsigned dim = get_dim_from_target(view_target);
uint8_t *map = pipe_buffer_map(st->pipe, dst, PIPE_MAP_READ | PIPE_MAP_ONCE, &xfer);
if (!map)
return;
pixels = _mesa_map_pbo_dest(ctx, pack, pixels);
/* compute shader doesn't handle these to cut down on uniform size */
if (pack->RowLength ||
pack->SkipPixels ||
pack->SkipRows ||
pack->ImageHeight ||
pack->SkipImages) {
if (view_target == PIPE_TEXTURE_1D_ARRAY) {
depth = height;
height = 1;
zoffset = yoffset;
yoffset = 0;
}
struct gl_pixelstore_attrib packing = *pack;
memset(&packing.RowLength, 0, offsetof(struct gl_pixelstore_attrib, SwapBytes) - offsetof(struct gl_pixelstore_attrib, RowLength));
for (unsigned z = 0; z < depth; z++) {
for (unsigned y = 0; y < height; y++) {
GLubyte *dst = _mesa_image_address(dim, pack, pixels,
width, height, format, type,
z, y, 0);
GLubyte *srcpx = _mesa_image_address(dim, &packing, map,
width, height, format, type,
z, y, 0);
memcpy(dst, srcpx, util_format_get_stride(dst_format, width));
}
}
} else {
/* direct copy for all other cases */
memcpy(pixels, map, dst->width0);
}
_mesa_unmap_pbo_dest(ctx, pack);
pipe_buffer_unmap(st->pipe, xfer);
}
bool
st_GetTexSubImage_shader(struct gl_context * ctx,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLint depth,
GLenum format, GLenum type, void * pixels,
struct gl_texture_image *texImage)
{
struct st_context *st = st_context(ctx);
struct pipe_screen *screen = st->screen;
struct gl_texture_object *stObj = texImage->TexObject;
struct pipe_resource *src = stObj->pt;
struct pipe_resource *dst = NULL;
enum pipe_format dst_format, src_format;
unsigned level = texImage->Level + texImage->TexObject->Attrib.MinLevel;
unsigned layer = texImage->Face + texImage->TexObject->Attrib.MinLayer;
enum pipe_texture_target view_target;
assert(!_mesa_is_format_etc2(texImage->TexFormat) &&
!_mesa_is_format_astc_2d(texImage->TexFormat) &&
texImage->TexFormat != MESA_FORMAT_ETC1_RGB8);
/* See if the texture format already matches the format and type,
* in which case the memcpy-based fast path will be used. */
if (_mesa_format_matches_format_and_type(texImage->TexFormat, format,
type, ctx->Pack.SwapBytes, NULL)) {
return false;
}
enum swizzle_clamp swizzle_clamp = 0;
src_format = st_pbo_get_src_format(screen, stObj->surface_based ? stObj->surface_format : src->format, src);
if (src_format == PIPE_FORMAT_NONE)
return false;
if (texImage->_BaseFormat != _mesa_get_format_base_format(texImage->TexFormat)) {
/* special handling for drivers that don't support these formats natively */
if (texImage->_BaseFormat == GL_LUMINANCE)
swizzle_clamp = SWIZZLE_CLAMP_LUMINANCE;
else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA)
swizzle_clamp = SWIZZLE_CLAMP_LUMINANCE_ALPHA;
else if (texImage->_BaseFormat == GL_ALPHA)
swizzle_clamp = SWIZZLE_CLAMP_ALPHA;
else if (texImage->_BaseFormat == GL_INTENSITY)
swizzle_clamp = SWIZZLE_CLAMP_INTENSITY;
else if (texImage->_BaseFormat == GL_RGB)
swizzle_clamp = SWIZZLE_CLAMP_RGBX;
}
dst_format = st_pbo_get_dst_format(ctx, PIPE_BUFFER, src_format, false, format, type, 0);
if (dst_format == PIPE_FORMAT_NONE) {
bool need_bgra_swizzle = false;
dst_format = get_convert_format(ctx, src_format, format, type, &need_bgra_swizzle);
if (dst_format == PIPE_FORMAT_NONE)
return false;
/* special swizzling for component selection */
if (need_bgra_swizzle)
swizzle_clamp |= SWIZZLE_CLAMP_BGRA;
else if (format == GL_GREEN_INTEGER)
swizzle_clamp |= SWIZZLE_CLAMP_GREEN;
else if (format == GL_BLUE_INTEGER)
swizzle_clamp |= SWIZZLE_CLAMP_BLUE;
}
/* check with the driver to see if memcpy is likely to be faster */
if (!screen->is_compute_copy_faster(screen, src_format, dst_format, width, height, depth, true))
return false;
view_target = get_target_from_texture(src);
/* I don't know why this works
* only for the texture rects
* but that's how it is
*/
if ((src->target != PIPE_TEXTURE_RECT &&
/* this would need multiple samplerviews */
((util_format_is_depth_and_stencil(src_format) && util_format_is_depth_and_stencil(dst_format)) ||
/* these format just doesn't work and science can't explain why */
dst_format == PIPE_FORMAT_Z32_FLOAT)) ||
/* L8 -> L32_FLOAT is another thinker */
(!util_format_is_float(src_format) && dst_format == PIPE_FORMAT_L32_FLOAT))
return false;
dst = download_texture_compute(st, &ctx->Pack, xoffset, yoffset, zoffset, width, height, depth,
level, layer, format, type, src_format, view_target, src, dst_format,
swizzle_clamp);
copy_converted_buffer(ctx, &ctx->Pack, view_target, dst, dst_format, xoffset, yoffset, zoffset,
width, height, depth, format, type, pixels);
pipe_resource_reference(&dst, NULL);
return true;
}