| /* |
| * 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; |
| } |
| |
| unsigned |
| ir3_ssbo_to_ibo(struct ir3_shader *shader, unsigned ssbo) |
| { |
| return ssbo; |
| } |
| |
| 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; |
| } |
| |
| unsigned |
| ir3_image_to_ibo(struct ir3_shader *shader, unsigned image) |
| { |
| return shader->nir->info.num_ssbos + image; |
| } |
| |
| 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; |
| } |
| |
| /* Helper to parse the deref for an image to get image slot. This should be |
| * mapped to tex or ibo idx using ir3_image_to_tex() or ir3_image_to_ibo(). |
| */ |
| unsigned |
| ir3_get_image_slot(nir_deref_instr *deref) |
| { |
| unsigned int loc = 0; |
| unsigned inner_size = 1; |
| |
| while (deref->deref_type != nir_deref_type_var) { |
| assert(deref->deref_type == nir_deref_type_array); |
| unsigned const_index = nir_src_as_uint(deref->arr.index); |
| |
| /* Go to the next instruction */ |
| deref = nir_deref_instr_parent(deref); |
| |
| assert(glsl_type_is_array(deref->type)); |
| const unsigned array_len = glsl_get_length(deref->type); |
| loc += MIN2(const_index, array_len - 1) * inner_size; |
| |
| /* Update the inner size */ |
| inner_size *= array_len; |
| } |
| |
| loc += deref->var->data.driver_location; |
| |
| return loc; |
| } |
| |
| /* 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_variable *var, unsigned *flagsp) |
| { |
| const struct glsl_type *type = glsl_without_array(var->type); |
| unsigned coords = glsl_get_sampler_coordinate_components(type); |
| unsigned flags = 0; |
| |
| if (coords == 3) |
| flags |= IR3_INSTR_3D; |
| |
| if (glsl_sampler_type_is_array(type)) |
| flags |= IR3_INSTR_A; |
| |
| if (flagsp) |
| *flagsp = flags; |
| |
| return coords; |
| } |
| |
| type_t |
| ir3_get_image_type(const nir_variable *var) |
| { |
| switch (glsl_get_sampler_result_type(glsl_without_array(var->type))) { |
| case GLSL_TYPE_UINT: |
| return TYPE_U32; |
| case GLSL_TYPE_INT: |
| return TYPE_S32; |
| case GLSL_TYPE_FLOAT: |
| return TYPE_F32; |
| case GLSL_TYPE_UINT16: |
| return TYPE_U16; |
| case GLSL_TYPE_INT16: |
| return TYPE_S16; |
| case GLSL_TYPE_FLOAT16: |
| return TYPE_F16; |
| default: |
| unreachable("bad sampler type."); |
| return 0; |
| } |
| } |
| |
| /* 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(GLuint format) |
| { |
| if (format == PIPE_FORMAT_NONE) |
| return 4; |
| else |
| return util_format_get_nr_components(format); |
| } |