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vkd3d-shader/hlsl: Add fwidth() function.

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Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
This commit is contained in:
Nikolay Sivov
2023-09-07 02:09:36 +02:00
committed by Alexandre Julliard
parent 8087cc01f7
commit b5c0c9c22f
Notes: Alexandre Julliard 2023-10-05 22:36:39 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/330
3 changed files with 55 additions and 0 deletions
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28
libs/vkd3d-shader/hlsl.y
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@@ -2961,6 +2961,33 @@ static bool intrinsic_frac(struct hlsl_ctx *ctx,
return !!add_unary_arithmetic_expr(ctx, params->instrs, HLSL_OP1_FRACT, arg, loc);
}
static bool intrinsic_fwidth(struct hlsl_ctx *ctx,
const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
{
struct hlsl_ir_function_decl *func;
struct hlsl_type *type;
char *body;
static const char template[] =
"%s fwidth(%s x)\n"
"{\n"
" return abs(ddx(x)) + abs(ddy(x));\n"
"}";
if (!elementwise_intrinsic_float_convert_args(ctx, params, loc))
return false;
type = params->args[0]->data_type;
if (!(body = hlsl_sprintf_alloc(ctx, template, type->name, type->name)))
return false;
func = hlsl_compile_internal_function(ctx, "fwidth", body);
vkd3d_free(body);
if (!func)
return false;
return add_user_call(ctx, func, params, loc);
}
static bool intrinsic_ldexp(struct hlsl_ctx *ctx,
const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
{
@@ -3690,6 +3717,7 @@ intrinsic_functions[] =
{"floor", 1, true, intrinsic_floor},
{"fmod", 2, true, intrinsic_fmod},
{"frac", 1, true, intrinsic_frac},
{"fwidth", 1, true, intrinsic_fwidth},
{"ldexp", 2, true, intrinsic_ldexp},
{"length", 1, true, intrinsic_length},
{"lerp", 3, true, intrinsic_lerp},