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/*
* Copyright (C) 2017-2018 Rob Clark <robclark@freedesktop.org>
*
* 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:
* Rob Clark <robclark@freedesktop.org>
*/
#include "ir3_image.h"
/*
* SSBO/Image to/from IBO/tex hw mapping table:
*/
void
ir3_ibo_mapping_init(struct ir3_ibo_mapping *mapping, unsigned num_textures)
{
memset(mapping, IBO_INVALID, sizeof(*mapping));
mapping->num_tex = 0;
mapping->tex_base = num_textures;
}
struct ir3_instruction *
ir3_ssbo_to_ibo(struct ir3_context *ctx, nir_src src)
{
if (ir3_bindless_resource(src)) {
ctx->so->bindless_ibo = true;
return ir3_get_src(ctx, &src)[0];
} else {
/* can this be non-const buffer_index? how do we handle that? */
int ssbo_idx = nir_src_as_uint(src);
return create_immed(ctx->block, ssbo_idx);
}
}
unsigned
ir3_ssbo_to_tex(struct ir3_ibo_mapping *mapping, unsigned ssbo)
{
if (mapping->ssbo_to_tex[ssbo] == IBO_INVALID) {
unsigned tex = mapping->num_tex++;
mapping->ssbo_to_tex[ssbo] = tex;
mapping->tex_to_image[tex] = IBO_SSBO | ssbo;
}
return mapping->ssbo_to_tex[ssbo] + mapping->tex_base;
}
struct ir3_instruction *
ir3_image_to_ibo(struct ir3_context *ctx, nir_src src)
{
if (ir3_bindless_resource(src)) {
ctx->so->bindless_ibo = true;
return ir3_get_src(ctx, &src)[0];
} else {
/* can this be non-const buffer_index? how do we handle that? */
int image_idx = nir_src_as_uint(src);
return create_immed(ctx->block, ctx->s->info.num_ssbos + image_idx);
}
}
unsigned
ir3_image_to_tex(struct ir3_ibo_mapping *mapping, unsigned image)
{
if (mapping->image_to_tex[image] == IBO_INVALID) {
unsigned tex = mapping->num_tex++;
mapping->image_to_tex[image] = tex;
mapping->tex_to_image[tex] = image;
}
return mapping->image_to_tex[image] + mapping->tex_base;
}
/* see tex_info() for equiv logic for texture instructions.. it would be
* nice if this could be better unified..
*/
unsigned
ir3_get_image_coords(const nir_intrinsic_instr *instr, unsigned *flagsp)
{
unsigned coords = nir_image_intrinsic_coord_components(instr);
unsigned flags = 0;
if (coords == 3)
flags |= IR3_INSTR_3D;
if (nir_intrinsic_image_array(instr))
flags |= IR3_INSTR_A;
if (flagsp)
*flagsp = flags;
return coords;
}
type_t
ir3_get_type_for_image_intrinsic(const nir_intrinsic_instr *instr)
{
const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic];
int bit_size = info->has_dest ? nir_dest_bit_size(instr->dest) : 32;
enum pipe_format format = nir_intrinsic_format(instr);
if (util_format_is_pure_uint(format))
return bit_size == 16 ? TYPE_U16 : TYPE_U32;
else if (util_format_is_pure_sint(format))
return bit_size == 16 ? TYPE_S16 : TYPE_S32;
else
return bit_size == 16 ? TYPE_F16 : TYPE_F32;
}
/* Returns the number of components for the different image formats
* supported by the GLES 3.1 spec, plus those added by the
* GL_NV_image_formats extension.
*/
unsigned
ir3_get_num_components_for_image_format(enum pipe_format format)
{
if (format == PIPE_FORMAT_NONE)
return 4;
else
return util_format_get_nr_components(format);
}
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