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/*
* Copyright © 2010 Intel Corporation
* Copyright © 2017 Advanced Micro Devices, Inc.
*
* 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 "nir_linker.h"
#include "main/mtypes.h"
#include "main/shaderobj.h"
#include "program/program.h"
#include "nir.h"
#include "compiler/glsl/glsl_symbol_table.h"
#include "compiler/glsl/linker.h"
#define validate(prog, cond, msg) \
if (!(cond)) \
validate_error(prog, __FILE__, __LINE__, #cond, msg);
static void
validate_error(gl_shader_program *prog, const char *filename, unsigned line,
const char *cond, const char *msg)
{
linker_error(prog, "SPIR-V link-time validation error:\n%s\nin %s:%u: %s",
msg, filename, line, cond);
}
static ir_depth_layout
ir_from_nir_depth_layout(nir_depth_layout depth_layout)
{
switch (depth_layout) {
default:
assert(false);
/* fall-through */
case nir_depth_layout_none: return ir_depth_layout_none;
case nir_depth_layout_any: return ir_depth_layout_any;
case nir_depth_layout_greater: return ir_depth_layout_greater;
case nir_depth_layout_less: return ir_depth_layout_less;
case nir_depth_layout_unchanged: return ir_depth_layout_unchanged;
}
}
static void
nir_to_ir_variable(void *mem_ctx, gl_shader_program *prog,
gl_linked_shader *linked, nir_variable *nir_var)
{
ir_variable_mode mode;
switch (nir_var->data.mode) {
case nir_var_shader_in: mode = ir_var_shader_in; break;
case nir_var_shader_out: mode = ir_var_shader_out; break;
case nir_var_uniform: mode = ir_var_uniform; break;
default:
assert(!"not implemented");
}
const char *name = nir_var->name;
validate(prog,
nir_var->data.location >= 0 ||
(nir_var->data.mode != nir_var_shader_in && nir_var->data.mode != nir_var_shader_out),
"Input and output variables must be decorated with a Location");
if (!name) {
/* Need spec clarification: Is this allowed for default-block uniforms?
* https://gitlab.khronos.org/opengl/API/issues/35
*/
validate(prog, nir_var->data.location >= 0,
"Default-block uniforms without Name must have a Location");
name = "";
}
ir_variable *ir_var = new(linked) ir_variable(nir_var->type, name, mode);
linked->ir->push_tail(ir_var);
ir_var->data.read_only = nir_var->data.read_only;
ir_var->data.centroid = nir_var->data.centroid;
ir_var->data.sample = nir_var->data.sample;
ir_var->data.patch = nir_var->data.patch;
ir_var->data.invariant = nir_var->data.invariant;
ir_var->data.interpolation = nir_var->data.interpolation;
ir_var->data.origin_upper_left = nir_var->data.origin_upper_left;
ir_var->data.pixel_center_integer = nir_var->data.pixel_center_integer;
ir_var->data.location_frac = nir_var->data.location_frac;
ir_var->data.fb_fetch_output = nir_var->data.fb_fetch_output;
ir_var->data.depth_layout = ir_from_nir_depth_layout(nir_var->data.depth_layout);
ir_var->data.location = nir_var->data.location;
ir_var->data.index = nir_var->data.index;
assert(nir_var->data.descriptor_set == 0);
ir_var->data.binding = nir_var->data.binding;
ir_var->data.offset = nir_var->data.offset;
ir_var->data.memory_read_only = nir_var->data.image.read_only;
ir_var->data.memory_write_only = nir_var->data.image.write_only;
ir_var->data.memory_coherent = nir_var->data.image.coherent;
ir_var->data.memory_volatile = nir_var->data.image._volatile;
ir_var->data.memory_restrict = nir_var->data.image.restrict_flag;
ir_var->data.image_format = nir_var->data.image.format;
if (ir_var->data.location >= 0)
ir_var->data.explicit_location = 1;
}
/**
* Create and fill in a gl_linked_shader for a given shader which has already
* been converted to NIR.
*
* We populate the IR with a shadow copy of all linker-relevant variables.
* The linking steps themselves will then operate on the shadow copies.
*/
struct gl_linked_shader *
create_linked_nir_shader(void *mem_ctx,
struct gl_context *ctx,
struct gl_shader_program *prog,
struct gl_shader *shader)
{
gl_linked_shader *linked = rzalloc(NULL, struct gl_linked_shader);
if (!linked) {
linker_error(prog, "out of memory\n");
return NULL;
}
linked->Stage = shader->Stage;
/* Create program and attach it to the linked shader */
struct gl_program *gl_prog =
ctx->Driver.NewProgram(ctx,
_mesa_shader_stage_to_program(shader->Stage),
prog->Name, false);
if (!gl_prog) {
prog->data->LinkStatus = linking_failure;
_mesa_delete_linked_shader(ctx, linked);
return NULL;
}
if (!prog->data->cache_fallback)
_mesa_reference_shader_program_data(ctx, &gl_prog->sh.data, prog->data);
/* Don't use _mesa_reference_program() just take ownership */
linked->Program = gl_prog;
linked->nir = nir_shader_clone(linked, shader->nir);
linked->ir = new(linked) exec_list;
linked->symbols = new(linked) glsl_symbol_table;
nir_foreach_variable(var, &linked->nir->inputs)
nir_to_ir_variable(mem_ctx, prog, linked, var);
nir_foreach_variable(var, &linked->nir->outputs)
nir_to_ir_variable(mem_ctx, prog, linked, var);
nir_foreach_variable(var, &linked->nir->uniforms)
nir_to_ir_variable(mem_ctx, prog, linked, var);
_mesa_print_ir(stdout, linked->ir, NULL);
nir_print_shader(linked->nir, stdout);
fflush(stdout);
return linked;
}
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