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vkd3d-shader/hlsl: Support exp() intrinsic.

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Nikolay Sivov 2023-01-25 21:03:56 +03:00 committed by Alexandre Julliard
parent 8ca2f65bc1
commit 8bb023e5af
Notes: Alexandre Julliard 2023-01-26 23:11:43 +01:00 
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/72
1 changed files with 21 additions and 0 deletions
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21
libs/vkd3d-shader/hlsl.y
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@ -2491,6 +2491,26 @@ static bool intrinsic_dot(struct hlsl_ctx *ctx,
return !!add_binary_dot_expr(ctx, params->instrs, params->args[0], params->args[1], loc);
}
static bool intrinsic_exp(struct hlsl_ctx *ctx,
const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
{
struct hlsl_ir_constant *coeff;
struct hlsl_ir_node *arg, *mul;
if (!(arg = intrinsic_float_convert_arg(ctx, params, params->args[0], loc)))
return false;
/* 1/ln(2) */
if (!(coeff = hlsl_new_float_constant(ctx, 1.442695f, loc)))
return false;
list_add_tail(params->instrs, &coeff->node.entry);
if (!(mul = add_binary_arithmetic_expr(ctx, params->instrs, HLSL_OP2_MUL, &coeff->node, params->args[0], loc)))
return false;
return !!add_unary_arithmetic_expr(ctx, params->instrs, HLSL_OP1_EXP2, mul, loc);
}
static bool intrinsic_exp2(struct hlsl_ctx *ctx,
const struct parse_initializer *params, const struct vkd3d_shader_location *loc)
{
@ -2943,6 +2963,7 @@ intrinsic_functions[] =
{"cos", 1, true, intrinsic_cos},
{"cross", 2, true, intrinsic_cross},
{"dot", 2, true, intrinsic_dot},
{"exp", 1, true, intrinsic_exp},
{"exp2", 1, true, intrinsic_exp2},
{"floor", 1, true, intrinsic_floor},
{"frac", 1, true, intrinsic_frac},