Support manually packing constant buffer elements through the `packoffset(·)` syntax.
Support not included yet for simultaneously having semantics, `register(·)`, and `packoffset(·)`, for abnormalities such as: ```hlsl Texture2D tex;
cbuffer buff { float4 a : packoffset(c0); sampler sam : packoffset(c0) : register(s1) : SEMANTIC; }
float4 main() : sv_target { return tex.Sample(sam, float2(0, 0)) + a; } ``` but this motivated the addition of the `hlsl_ir_var.offset_reservation` field instead of reusing `hlsl_ir_var.reg_reservation`.
-- v3: vkd3d-shader/hlsl: Consider register() as manual packing for resource fields. tests: Test packoffset() with resources inside cbuffers. vkd3d-shader/hlsl: Ignore packoffset() contents for SM1. vkd3d-shader/hlsl: Don't allow manual and automatic cbuffer offset packing. vkd3d-shader/hlsl: Detect overlaps in cbuffer offsets. vkd3d-shader/hlsl: Support packoffset(). vkd3d-shader/hlsl: Parse packoffset(). tests: Test packoffset().
From: Francisco Casas fcasas@codeweavers.com
--- tests/cbuffer.shader_test | 78 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+)
diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index 07ef18db..d60132ea 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -15,3 +15,81 @@ float4 main() : sv_target uniform 0 float4 1.0 2.0 3.0 4.0 draw quad probe all rgba (1.0, 2.0, 3.0, 4.0) + + +% SM1 buffer offset allocation follows different rules than SM4. +% Those would have to be tested separately. +[require] +shader model >= 4.0 + + +% Respect register boundaries +[pixel shader] +cbuffer buffer +{ + float2 a; + float2 b; + float2 c; + float3 d; +} + +float4 main() : sv_target +{ + return float4(a.x, b.x, c.x, d.x); +} + +[test] +uniform 0 float4 0.0 1.0 2.0 3.0 +uniform 4 float4 4.0 5.0 6.0 7.0 +uniform 8 float4 8.0 9.0 10.0 11.0 +uniform 12 float4 12.0 13.0 14.0 15.0 +draw quad +probe all rgba (0.0, 2.0, 4.0, 8.0) + + +[pixel shader] +cbuffer buffer +{ + float a; + float b[2]; + float c; +} + +float4 main() : sv_target +{ + return float4(a, b[0], b[1], c); +} + +[test] +uniform 0 float4 0.0 1.0 2.0 3.0 +uniform 4 float4 4.0 5.0 6.0 7.0 +uniform 8 float4 8.0 9.0 10.0 11.0 +draw quad +probe all rgba (0.0, 4.0, 8.0, 9.0) + + +[pixel shader] +cbuffer buffer +{ + float a; + struct + { + float b; + float c; + } p; + float d; +} + +float4 main() : sv_target +{ + return float4(a, p.b, p.c, d); +} + +[test] +uniform 0 float4 0.0 1.0 2.0 3.0 +uniform 4 float4 4.0 5.0 6.0 7.0 +uniform 8 float4 8.0 9.0 10.0 11.0 +uniform 12 float4 12.0 13.0 14.0 15.0 +draw quad +probe all rgba (0.0, 4.0, 5.0, 6.0) +
From: Francisco Casas fcasas@codeweavers.com
--- tests/cbuffer.shader_test | 339 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 339 insertions(+)
diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index d60132ea..7fa787d9 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -93,3 +93,342 @@ uniform 12 float4 12.0 13.0 14.0 15.0 draw quad probe all rgba (0.0, 4.0, 5.0, 6.0)
+ +[pixel shader fail] +// Elements cannot overlap if buffer is used. +cbuffer buffer +{ + float c : packoffset(c0); + float4 a[2] : packoffset(c1); + float4 b[2] : packoffset(c2); +} + +float4 main() : sv_target +{ + return c; +} + + +[pixel shader todo] +// Elements can overlap if buffer is not used. +cbuffer buffer +{ + float4 a[2] : packoffset(c1); + float4 b[2] : packoffset(c2); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader todo] +cbuffer buffer +{ + float4 a : packoffset(c1); + float4 b : packoffset(c2); +} + +float4 main() : sv_target +{ + return 100 * a + b; +} + +[test] +uniform 0 float4 1.0 2.0 3.0 4.0 +uniform 4 float4 5.0 6.0 7.0 8.0 +uniform 8 float4 9.0 10.0 11.0 12.0 +todo draw quad +todo probe all rgba (509, 610, 711, 812) + + +[pixel shader todo] +struct apple +{ + float2 a; + float b; + float4 c; +}; + +cbuffer buffer +{ + float4 foo : packoffset(c3); + struct apple bar : packoffset(c1); +} + +float4 main() : sv_target +{ + return 1000 * foo + 100 * float4(bar.a, 0, 0) + 10 * float4(bar.b, 0, 0, 0) + bar.c; +} + +[test] +uniform 0 float4 0.0 1.0 2.0 3.0 +uniform 4 float4 4.0 5.0 6.0 7.0 +uniform 8 float4 8.0 9.0 10.0 11.0 +uniform 12 float4 12.0 13.0 14.0 15.0 +todo draw quad +todo probe all rgba (12468.0, 13509.0, 14010.0, 15011.0) + + +[pixel shader todo] +cbuffer buffer +{ + float2 c : packoffset(c0.y); +} + +float4 main() : sv_target +{ + return float4(c, c); +} + +[test] +uniform 0 float4 1.0 2.0 3.0 4.0 +todo draw quad +todo probe all rgba (2.0, 3.0, 2.0, 3.0) + + +[pixel shader fail] +// Elements must respect register boundaries. +cbuffer buffer +{ + float4 c : packoffset(c0.z); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +// Matrices must be aligned. +cbuffer buffer +{ + float1x1 m : packoffset(c0.y); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +// Arrays must be aligned. +cbuffer buffer +{ + float a[1] : packoffset(c0.y); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +// Structs must be aligned. +struct apple +{ + float p; +}; + +cbuffer buffer +{ + struct apple a : packoffset(c0.y); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +// Invalid offset on unused buffer. +cbuffer buffer +{ + float3 a : packoffset(c0.z); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +// Invalid offset on unused variable. +cbuffer buffer +{ + float a : packoffset(c0); + float3 b : packoffset(c0.z); +} + +float4 main() : sv_target +{ + return a; +} + + +[pixel shader todo] +cbuffer buffer +{ + float4 a : packoffset(c1); + float1 b : packoffset(c0); + float1 c : packoffset(c0.y); +} + +float4 main() : sv_target +{ + return 100 * a + 10 * b + c; +} + +[test] +uniform 0 float 1.0 +uniform 1 float 2.0 +uniform 4 float4 5.0 6.0 7.0 8.0 +todo draw quad +todo probe all rgba (512.0, 612.0, 712.0, 812.0) + + +[pixel shader fail] +// packoffset cannot be used unless all elements use it. +cbuffer buffer +{ + float4 a : packoffset(c0); + float4 b; +} + +float4 main() : sv_target +{ + return a + b; +} + + +[pixel shader todo] +cbuffer buffer +{ + float2 c : packoffset(c0.b); +} + +float4 main() : sv_target +{ + return float4(c, c); +} + +[test] +uniform 0 float4 1.0 2.0 3.0 4.0 +todo draw quad +todo probe all rgba (3.0, 4.0, 3.0, 4.0) + + +[pixel shader fail] +cbuffer buffer +{ + float2 c : packoffset(c0.xy); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +cbuffer buffer +{ + float4x4 mat : packoffset(c0._m00); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +cbuffer buffer +{ + float4 a : packoffset(c0._m00); +} + +float4 main() : sv_target +{ + return 0; +} + + +[pixel shader fail] +cbuffer buffer +{ + float2 c : packoffset(c0.xz); +} + +float4 main() : sv_target +{ + return 0; +} + + +% packoffset cannot be used outside a constant buffer. +[pixel shader fail] +float4 a : packoffset(c0); + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail] +float4 foo(float4 a : packoffset(c0)) +{ + return a; +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail] +float4 foo(float4 a) : packoffset(c0) +{ + return a; +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail] +struct apple +{ + float4 a : packoffset(c0); +}; + +cbuffer buffer +{ + struct apple a; +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail] +cbuffer buffer +{ + struct + { + float4 a : packoffset(c0); + } s; +} + +float4 main() : sv_target +{ + return 0; +}
From: Francisco Casas fcasas@codeweavers.com
--- libs/vkd3d-shader/hlsl.c | 6 +- libs/vkd3d-shader/hlsl.h | 10 ++- libs/vkd3d-shader/hlsl.l | 1 + libs/vkd3d-shader/hlsl.y | 103 +++++++++++++++++++++++++++++-- libs/vkd3d-shader/hlsl_codegen.c | 4 +- tests/cbuffer.shader_test | 50 +++++++++------ 6 files changed, 144 insertions(+), 30 deletions(-)
diff --git a/libs/vkd3d-shader/hlsl.c b/libs/vkd3d-shader/hlsl.c index 42a1d52f..7d47feec 100644 --- a/libs/vkd3d-shader/hlsl.c +++ b/libs/vkd3d-shader/hlsl.c @@ -833,7 +833,7 @@ struct hlsl_ir_expr *hlsl_new_copy(struct hlsl_ctx *ctx, struct hlsl_ir_node *no
struct hlsl_ir_var *hlsl_new_var(struct hlsl_ctx *ctx, const char *name, struct hlsl_type *type, const struct vkd3d_shader_location loc, const struct hlsl_semantic *semantic, unsigned int modifiers, - const struct hlsl_reg_reservation *reg_reservation) + const struct hlsl_reg_reservation *reg_reservation, const struct hlsl_reg_reservation *offset_reservation) { struct hlsl_ir_var *var;
@@ -848,6 +848,8 @@ struct hlsl_ir_var *hlsl_new_var(struct hlsl_ctx *ctx, const char *name, struct var->storage_modifiers = modifiers; if (reg_reservation) var->reg_reservation = *reg_reservation; + if (offset_reservation) + var->offset_reservation = *offset_reservation; return var; }
@@ -867,7 +869,7 @@ struct hlsl_ir_var *hlsl_new_synthetic_var(struct hlsl_ctx *ctx, const char *tem hlsl_release_string_buffer(ctx, string); return NULL; } - var = hlsl_new_var(ctx, name, type, *loc, NULL, 0, NULL); + var = hlsl_new_var(ctx, name, type, *loc, NULL, 0, NULL, NULL); hlsl_release_string_buffer(ctx, string); if (var) list_add_tail(&ctx->dummy_scope->vars, &var->scope_entry); diff --git a/libs/vkd3d-shader/hlsl.h b/libs/vkd3d-shader/hlsl.h index 6fa627ed..e1037e9a 100644 --- a/libs/vkd3d-shader/hlsl.h +++ b/libs/vkd3d-shader/hlsl.h @@ -347,7 +347,10 @@ struct hlsl_attribute #define HLSL_ARRAY_ELEMENTS_COUNT_IMPLICIT 0
/* Reservation of a specific register to a variable, field, or buffer, written in the HLSL source - * using the register(·) syntax */ + * using the register(·) syntax. + * Also used for offset reservations for objects inside constant buffers when manual packing is + * enabled through the packoffset(·) syntax. In that case, hlsl_reg_reservation.index is in + * register components. */ struct hlsl_reg_reservation { char type; @@ -367,6 +370,9 @@ struct hlsl_ir_var /* Optional register to be used as a starting point for the variable allocation, specified * by the user via the register(·) syntax. */ struct hlsl_reg_reservation reg_reservation; + /* Optional offset to be used as a starting point for variables inside constant buffers, + * specified by the user via the packoffset(·) syntax. */ + struct hlsl_reg_reservation offset_reservation;
/* Item entry in hlsl_scope.vars. Specifically hlsl_ctx.globals.vars if the variable is global. */ struct list scope_entry; @@ -1073,7 +1079,7 @@ struct hlsl_ir_node *hlsl_new_unary_expr(struct hlsl_ctx *ctx, enum hlsl_ir_expr struct vkd3d_shader_location loc); struct hlsl_ir_var *hlsl_new_var(struct hlsl_ctx *ctx, const char *name, struct hlsl_type *type, const struct vkd3d_shader_location loc, const struct hlsl_semantic *semantic, unsigned int modifiers, - const struct hlsl_reg_reservation *reg_reservation); + const struct hlsl_reg_reservation *reg_reservation, const struct hlsl_reg_reservation *offset_reservation);
void hlsl_error(struct hlsl_ctx *ctx, const struct vkd3d_shader_location *loc, enum vkd3d_shader_error error, const char *fmt, ...) VKD3D_PRINTF_FUNC(4, 5); diff --git a/libs/vkd3d-shader/hlsl.l b/libs/vkd3d-shader/hlsl.l index 69ed9d9d..d27fd803 100644 --- a/libs/vkd3d-shader/hlsl.l +++ b/libs/vkd3d-shader/hlsl.l @@ -95,6 +95,7 @@ matrix {return KW_MATRIX; } namespace {return KW_NAMESPACE; } nointerpolation {return KW_NOINTERPOLATION; } out {return KW_OUT; } +packoffset {return KW_PACKOFFSET; } pass {return KW_PASS; } PixelShader {return KW_PIXELSHADER; } precise {return KW_PRECISE; } diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y index 6c618912..3cc145af 100644 --- a/libs/vkd3d-shader/hlsl.y +++ b/libs/vkd3d-shader/hlsl.y @@ -39,14 +39,14 @@ struct parse_parameter struct hlsl_type *type; const char *name; struct hlsl_semantic semantic; - struct hlsl_reg_reservation reg_reservation; + struct hlsl_reg_reservation reg_reservation, offset_reservation; unsigned int modifiers; };
struct parse_colon_attribute { struct hlsl_semantic semantic; - struct hlsl_reg_reservation reg_reservation; + struct hlsl_reg_reservation reg_reservation, offset_reservation; };
struct parse_initializer @@ -71,7 +71,7 @@ struct parse_variable_def char *name; struct parse_array_sizes arrays; struct hlsl_semantic semantic; - struct hlsl_reg_reservation reg_reservation; + struct hlsl_reg_reservation reg_reservation, offset_reservation; struct parse_initializer initializer; };
@@ -997,6 +997,9 @@ static bool gen_struct_fields(struct hlsl_ctx *ctx, struct parse_fields *fields, hlsl_error(ctx, &v->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "Illegal initializer on a struct field."); free_parse_initializer(&v->initializer); } + if (v->offset_reservation.type) + hlsl_error(ctx, &v->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() is not allowed inside struct definitions."); vkd3d_free(v); } vkd3d_free(defs); @@ -1079,7 +1082,12 @@ static bool add_func_parameter(struct hlsl_ctx *ctx, struct hlsl_func_parameters hlsl_error(ctx, &loc, VKD3D_SHADER_ERROR_HLSL_INVALID_MODIFIER, "Parameter '%s' is declared as both "out" and "uniform".", param->name);
- if (!(var = hlsl_new_var(ctx, param->name, param->type, loc, ¶m->semantic, param->modifiers, ¶m->reg_reservation))) + if (param->offset_reservation.type) + hlsl_error(ctx, &loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() is not allowed on function parameters."); + + if (!(var = hlsl_new_var(ctx, param->name, param->type, loc, ¶m->semantic, param->modifiers, + ¶m->reg_reservation, NULL))) return false; var->is_param = 1;
@@ -1109,6 +1117,52 @@ static struct hlsl_reg_reservation parse_reg_reservation(const char *reg_string) return reservation; }
+static struct hlsl_reg_reservation parse_packoffset(struct hlsl_ctx *ctx, const char *reg_string, + const char *swizzle, const struct vkd3d_shader_location *loc) +{ + struct hlsl_reg_reservation reservation = {0}; + char *endptr; + + reservation.index = strtoul(reg_string + 1, &endptr, 10); + if (*endptr) + { + hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "Invalid packoffset() syntax."); + return reservation; + } + + reservation.type = reg_string[0]; + if (reservation.type != 'c') + { + hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "Only 'c' registers are allowed in packoffset()."); + return reservation; + } + + reservation.index *= 4; + + if (swizzle) + { + if (strlen(swizzle) != 1) + hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "Invalid packoffset() swizzle "%s".", swizzle); + + if (swizzle[0] == 'x' || swizzle[0] == 'r') + reservation.index += 0; + else if (swizzle[0] == 'y' || swizzle[0] == 'g') + reservation.index += 1; + else if (swizzle[0] == 'z' || swizzle[0] == 'b') + reservation.index += 2; + else if (swizzle[0] == 'w' || swizzle[0] == 'a') + reservation.index += 3; + else + hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "Invalid packoffset() swizzle "%s".", swizzle); + } + + return reservation; +} + static struct hlsl_ir_function_decl *get_func_decl(struct rb_tree *funcs, const char *name, const struct hlsl_func_parameters *parameters) { @@ -2051,7 +2105,8 @@ static struct list *declare_vars(struct hlsl_ctx *ctx, struct hlsl_type *basic_t } vkd3d_free(v->arrays.sizes);
- if (!(var = hlsl_new_var(ctx, v->name, type, v->loc, &v->semantic, modifiers, &v->reg_reservation))) + if (!(var = hlsl_new_var(ctx, v->name, type, v->loc, &v->semantic, modifiers, &v->reg_reservation, + &v->offset_reservation))) { free_parse_variable_def(v); continue; @@ -2059,6 +2114,13 @@ static struct list *declare_vars(struct hlsl_ctx *ctx, struct hlsl_type *basic_t
var->buffer = ctx->cur_buffer;
+ if (var->buffer == ctx->globals_buffer) + { + if (var->offset_reservation.type) + hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() is only allowed inside constant buffer declarations."); + } + if (ctx->cur_scope == ctx->globals) { local = false; @@ -3811,6 +3873,7 @@ static bool add_method_call(struct hlsl_ctx *ctx, struct list *instrs, struct hl %token KW_NAMESPACE %token KW_NOINTERPOLATION %token KW_OUT +%token KW_PACKOFFSET %token KW_PASS %token KW_PIXELSHADER %token KW_PRECISE @@ -3964,6 +4027,7 @@ static bool add_method_call(struct hlsl_ctx *ctx, struct list *instrs, struct hl %type <parameters> parameters
%type <reg_reservation> register_opt +%type <reg_reservation> packoffset_opt
%type <sampler_dim> texture_type uav_type
@@ -4316,6 +4380,9 @@ func_prototype_no_attrs:
if ($7.reg_reservation.type) FIXME("Unexpected register reservation for a function.\n"); + if ($7.offset_reservation.type) + hlsl_error(ctx, &@5, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() is not allowed on functions.");
if (($$.decl = get_func_decl(&ctx->functions, $3, &$5))) { @@ -4443,16 +4510,25 @@ colon_attribute: { $$.semantic.name = NULL; $$.reg_reservation.type = 0; + $$.offset_reservation.type = 0; } | semantic { $$.semantic = $1; $$.reg_reservation.type = 0; + $$.offset_reservation.type = 0; } | register_opt { $$.semantic.name = NULL; $$.reg_reservation = $1; + $$.offset_reservation.type = 0; + } + | packoffset_opt + { + $$.semantic.name = NULL; + $$.reg_reservation.type = 0; + $$.offset_reservation = $1; }
semantic: @@ -4483,6 +4559,21 @@ register_opt: vkd3d_free($6); }
+packoffset_opt: + ':' KW_PACKOFFSET '(' any_identifier ')' + { + $$ = parse_packoffset(ctx, $4, NULL, &@$); + + vkd3d_free($4); + } + | ':' KW_PACKOFFSET '(' any_identifier '.' any_identifier ')' + { + $$ = parse_packoffset(ctx, $4, $6, &@$); + + vkd3d_free($4); + vkd3d_free($6); + } + parameters: scope_start { @@ -4546,6 +4637,7 @@ parameter: $$.name = $3; $$.semantic = $5.semantic; $$.reg_reservation = $5.reg_reservation; + $$.offset_reservation = $5.offset_reservation; }
texture_type: @@ -4833,6 +4925,7 @@ variable_decl: $$->arrays = $2; $$->semantic = $3.semantic; $$->reg_reservation = $3.reg_reservation; + $$->offset_reservation = $3.offset_reservation; }
state: diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c index 65bd9d4c..aa1d2d3f 100644 --- a/libs/vkd3d-shader/hlsl_codegen.c +++ b/libs/vkd3d-shader/hlsl_codegen.c @@ -198,7 +198,7 @@ static void prepend_uniform_copy(struct hlsl_ctx *ctx, struct list *instrs, stru * can write the uniform name into the shader reflection data. */
if (!(uniform = hlsl_new_var(ctx, temp->name, temp->data_type, - temp->loc, NULL, temp->storage_modifiers, &temp->reg_reservation))) + temp->loc, NULL, temp->storage_modifiers, &temp->reg_reservation, &temp->offset_reservation))) return; list_add_before(&temp->scope_entry, &uniform->scope_entry); list_add_tail(&ctx->extern_vars, &uniform->extern_entry); @@ -238,7 +238,7 @@ static struct hlsl_ir_var *add_semantic_var(struct hlsl_ctx *ctx, struct hlsl_ir } new_semantic.index = semantic->index; if (!(ext_var = hlsl_new_var(ctx, hlsl_strdup(ctx, name->buffer), - type, var->loc, &new_semantic, modifiers, NULL))) + type, var->loc, &new_semantic, modifiers, NULL, NULL))) { hlsl_release_string_buffer(ctx, name); hlsl_cleanup_semantic(&new_semantic); diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index 7fa787d9..628a441a 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -23,6 +23,18 @@ probe all rgba (1.0, 2.0, 3.0, 4.0) shader model >= 4.0
+[pixel shader fail] +cbuffer buffer +{ + float4 a : packoffset(c1invalid_extra_chars); +} + +float4 main() : sv_target +{ + return 0; +} + + % Respect register boundaries [pixel shader] cbuffer buffer @@ -94,7 +106,7 @@ draw quad probe all rgba (0.0, 4.0, 5.0, 6.0)
-[pixel shader fail] +[pixel shader fail todo] // Elements cannot overlap if buffer is used. cbuffer buffer { @@ -109,7 +121,7 @@ float4 main() : sv_target }
-[pixel shader todo] +[pixel shader] // Elements can overlap if buffer is not used. cbuffer buffer { @@ -123,7 +135,7 @@ float4 main() : sv_target }
-[pixel shader todo] +[pixel shader] cbuffer buffer { float4 a : packoffset(c1); @@ -139,11 +151,11 @@ float4 main() : sv_target uniform 0 float4 1.0 2.0 3.0 4.0 uniform 4 float4 5.0 6.0 7.0 8.0 uniform 8 float4 9.0 10.0 11.0 12.0 -todo draw quad +draw quad todo probe all rgba (509, 610, 711, 812)
-[pixel shader todo] +[pixel shader] struct apple { float2 a; @@ -167,11 +179,11 @@ uniform 0 float4 0.0 1.0 2.0 3.0 uniform 4 float4 4.0 5.0 6.0 7.0 uniform 8 float4 8.0 9.0 10.0 11.0 uniform 12 float4 12.0 13.0 14.0 15.0 -todo draw quad +draw quad todo probe all rgba (12468.0, 13509.0, 14010.0, 15011.0)
-[pixel shader todo] +[pixel shader] cbuffer buffer { float2 c : packoffset(c0.y); @@ -184,11 +196,11 @@ float4 main() : sv_target
[test] uniform 0 float4 1.0 2.0 3.0 4.0 -todo draw quad +draw quad todo probe all rgba (2.0, 3.0, 2.0, 3.0)
-[pixel shader fail] +[pixel shader fail todo] // Elements must respect register boundaries. cbuffer buffer { @@ -201,7 +213,7 @@ float4 main() : sv_target }
-[pixel shader fail] +[pixel shader fail todo] // Matrices must be aligned. cbuffer buffer { @@ -214,7 +226,7 @@ float4 main() : sv_target }
-[pixel shader fail] +[pixel shader fail todo] // Arrays must be aligned. cbuffer buffer { @@ -227,7 +239,7 @@ float4 main() : sv_target }
-[pixel shader fail] +[pixel shader fail todo] // Structs must be aligned. struct apple { @@ -245,7 +257,7 @@ float4 main() : sv_target }
-[pixel shader fail] +[pixel shader fail todo] // Invalid offset on unused buffer. cbuffer buffer { @@ -258,7 +270,7 @@ float4 main() : sv_target }
-[pixel shader fail] +[pixel shader fail todo] // Invalid offset on unused variable. cbuffer buffer { @@ -272,7 +284,7 @@ float4 main() : sv_target }
-[pixel shader todo] +[pixel shader] cbuffer buffer { float4 a : packoffset(c1); @@ -289,11 +301,11 @@ float4 main() : sv_target uniform 0 float 1.0 uniform 1 float 2.0 uniform 4 float4 5.0 6.0 7.0 8.0 -todo draw quad +draw quad todo probe all rgba (512.0, 612.0, 712.0, 812.0)
-[pixel shader fail] +[pixel shader fail todo] // packoffset cannot be used unless all elements use it. cbuffer buffer { @@ -307,7 +319,7 @@ float4 main() : sv_target }
-[pixel shader todo] +[pixel shader] cbuffer buffer { float2 c : packoffset(c0.b); @@ -320,7 +332,7 @@ float4 main() : sv_target
[test] uniform 0 float4 1.0 2.0 3.0 4.0 -todo draw quad +draw quad todo probe all rgba (3.0, 4.0, 3.0, 4.0)
From: Francisco Casas fcasas@codeweavers.com
--- libs/vkd3d-shader/hlsl_codegen.c | 46 +++++++++++++++++++++++++++----- tests/cbuffer.shader_test | 22 +++++++-------- 2 files changed, 51 insertions(+), 17 deletions(-)
diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c index aa1d2d3f..e556b0c2 100644 --- a/libs/vkd3d-shader/hlsl_codegen.c +++ b/libs/vkd3d-shader/hlsl_codegen.c @@ -2859,17 +2859,51 @@ static const struct hlsl_buffer *get_reserved_buffer(struct hlsl_ctx *ctx, uint3 return NULL; }
-static void calculate_buffer_offset(struct hlsl_ir_var *var) +static void calculate_buffer_offset(struct hlsl_ctx *ctx, struct hlsl_ir_var *var) { + unsigned int var_reg_size = var->data_type->reg_size[HLSL_REGSET_NUMERIC]; + enum hlsl_type_class var_type = var->data_type->type; struct hlsl_buffer *buffer = var->buffer;
- buffer->size = hlsl_type_get_sm4_offset(var->data_type, buffer->size); + if (var->offset_reservation.type == 'c') + { + if (var->offset_reservation.index % 4) + { + if (var_type == HLSL_CLASS_MATRIX) + { + hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() reservations with matrix types must be aligned with the beginning of a register."); + } + else if (var_type == HLSL_CLASS_ARRAY) + { + hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() reservations with array types must be aligned with the beginning of a register."); + } + else if (var_type == HLSL_CLASS_STRUCT) + { + hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() reservations with struct types must be aligned with the beginning of a register."); + } + else if (var_type == HLSL_CLASS_VECTOR) + { + unsigned int aligned_offset = hlsl_type_get_sm4_offset(var->data_type, var->offset_reservation.index); + + if (var->offset_reservation.index != aligned_offset) + hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() reservations with vector types cannot span multiple registers."); + } + } + var->buffer_offset = var->offset_reservation.index; + } + else + { + var->buffer_offset = hlsl_type_get_sm4_offset(var->data_type, buffer->size); + }
- var->buffer_offset = buffer->size; TRACE("Allocated buffer offset %u to %s.\n", var->buffer_offset, var->name); - buffer->size += var->data_type->reg_size[HLSL_REGSET_NUMERIC]; + buffer->size = max(buffer->size, var->buffer_offset + var_reg_size); if (var->last_read) - buffer->used_size = buffer->size; + buffer->used_size = max(buffer->used_size, var->buffer_offset + var_reg_size); }
static void allocate_buffers(struct hlsl_ctx *ctx) @@ -2885,7 +2919,7 @@ static void allocate_buffers(struct hlsl_ctx *ctx) if (var->is_param) var->buffer = ctx->params_buffer;
- calculate_buffer_offset(var); + calculate_buffer_offset(ctx, var); } }
diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index 628a441a..bf711629 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -152,7 +152,7 @@ uniform 0 float4 1.0 2.0 3.0 4.0 uniform 4 float4 5.0 6.0 7.0 8.0 uniform 8 float4 9.0 10.0 11.0 12.0 draw quad -todo probe all rgba (509, 610, 711, 812) +probe all rgba (509, 610, 711, 812)
[pixel shader] @@ -180,7 +180,7 @@ uniform 4 float4 4.0 5.0 6.0 7.0 uniform 8 float4 8.0 9.0 10.0 11.0 uniform 12 float4 12.0 13.0 14.0 15.0 draw quad -todo probe all rgba (12468.0, 13509.0, 14010.0, 15011.0) +probe all rgba (12468.0, 13509.0, 14010.0, 15011.0)
[pixel shader] @@ -197,10 +197,10 @@ float4 main() : sv_target [test] uniform 0 float4 1.0 2.0 3.0 4.0 draw quad -todo probe all rgba (2.0, 3.0, 2.0, 3.0) +probe all rgba (2.0, 3.0, 2.0, 3.0)
-[pixel shader fail todo] +[pixel shader fail] // Elements must respect register boundaries. cbuffer buffer { @@ -213,7 +213,7 @@ float4 main() : sv_target }
-[pixel shader fail todo] +[pixel shader fail] // Matrices must be aligned. cbuffer buffer { @@ -226,7 +226,7 @@ float4 main() : sv_target }
-[pixel shader fail todo] +[pixel shader fail] // Arrays must be aligned. cbuffer buffer { @@ -239,7 +239,7 @@ float4 main() : sv_target }
-[pixel shader fail todo] +[pixel shader fail] // Structs must be aligned. struct apple { @@ -257,7 +257,7 @@ float4 main() : sv_target }
-[pixel shader fail todo] +[pixel shader fail] // Invalid offset on unused buffer. cbuffer buffer { @@ -270,7 +270,7 @@ float4 main() : sv_target }
-[pixel shader fail todo] +[pixel shader fail] // Invalid offset on unused variable. cbuffer buffer { @@ -302,7 +302,7 @@ uniform 0 float 1.0 uniform 1 float 2.0 uniform 4 float4 5.0 6.0 7.0 8.0 draw quad -todo probe all rgba (512.0, 612.0, 712.0, 812.0) +probe all rgba (512.0, 612.0, 712.0, 812.0)
[pixel shader fail todo] @@ -333,7 +333,7 @@ float4 main() : sv_target [test] uniform 0 float4 1.0 2.0 3.0 4.0 draw quad -todo probe all rgba (3.0, 4.0, 3.0, 4.0) +probe all rgba (3.0, 4.0, 3.0, 4.0)
[pixel shader fail]
From: Francisco Casas fcasas@codeweavers.com
--- libs/vkd3d-shader/hlsl_codegen.c | 42 ++++++++++++++++++++++++++++++++ tests/cbuffer.shader_test | 2 +- 2 files changed, 43 insertions(+), 1 deletion(-)
diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c index e556b0c2..5f989a51 100644 --- a/libs/vkd3d-shader/hlsl_codegen.c +++ b/libs/vkd3d-shader/hlsl_codegen.c @@ -2906,6 +2906,46 @@ static void calculate_buffer_offset(struct hlsl_ctx *ctx, struct hlsl_ir_var *va buffer->used_size = max(buffer->used_size, var->buffer_offset + var_reg_size); }
+static void validate_buffer_offsets(struct hlsl_ctx *ctx) +{ + struct hlsl_ir_var *var1, *var2; + struct hlsl_buffer *buffer; + + LIST_FOR_EACH_ENTRY(var1, &ctx->extern_vars, struct hlsl_ir_var, extern_entry) + { + if (!var1->is_uniform || var1->data_type->type == HLSL_CLASS_OBJECT) + continue; + + buffer = var1->buffer; + if (!buffer->used_size) + continue; + + LIST_FOR_EACH_ENTRY(var2, &ctx->extern_vars, struct hlsl_ir_var, extern_entry) + { + unsigned int var1_reg_size, var2_reg_size; + + if (!var2->is_uniform || var2->data_type->type == HLSL_CLASS_OBJECT) + continue; + + if (var1 == var2 || var1->buffer != var2->buffer) + continue; + + /* This is to avoid reporting the error twice for the same pair of overlapping variables. */ + if (strcmp(var1->name, var2->name) >= 0) + continue; + + var1_reg_size = var1->data_type->reg_size[HLSL_REGSET_NUMERIC]; + var2_reg_size = var2->data_type->reg_size[HLSL_REGSET_NUMERIC]; + + if (var1->buffer_offset < var2->buffer_offset + var2_reg_size + && var2->buffer_offset < var1->buffer_offset + var1_reg_size) + hlsl_error(ctx, &buffer->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "Invalid packoffset() reservation: Variables %s and %s overlap.", + var1->name, var2->name); + } + } +} + static void allocate_buffers(struct hlsl_ctx *ctx) { struct hlsl_buffer *buffer; @@ -2923,6 +2963,8 @@ static void allocate_buffers(struct hlsl_ctx *ctx) } }
+ validate_buffer_offsets(ctx); + LIST_FOR_EACH_ENTRY(buffer, &ctx->buffers, struct hlsl_buffer, entry) { if (!buffer->used_size) diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index bf711629..d8cfc351 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -106,7 +106,7 @@ draw quad probe all rgba (0.0, 4.0, 5.0, 6.0)
-[pixel shader fail todo] +[pixel shader fail] // Elements cannot overlap if buffer is used. cbuffer buffer {
From: Francisco Casas fcasas@codeweavers.com
--- libs/vkd3d-shader/hlsl.h | 3 +++ libs/vkd3d-shader/hlsl_codegen.c | 19 +++++++++++++++++++ tests/cbuffer.shader_test | 2 +- 3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/libs/vkd3d-shader/hlsl.h b/libs/vkd3d-shader/hlsl.h index e1037e9a..2ba79a9e 100644 --- a/libs/vkd3d-shader/hlsl.h +++ b/libs/vkd3d-shader/hlsl.h @@ -684,6 +684,9 @@ struct hlsl_buffer unsigned size, used_size; /* Register of type 'b' on which the buffer is allocated. */ struct hlsl_reg reg; + + bool manually_packed_elements; + bool automatically_packed_elements; };
struct hlsl_ctx diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c index 5f989a51..269543d9 100644 --- a/libs/vkd3d-shader/hlsl_codegen.c +++ b/libs/vkd3d-shader/hlsl_codegen.c @@ -2944,6 +2944,25 @@ static void validate_buffer_offsets(struct hlsl_ctx *ctx) var1->name, var2->name); } } + + LIST_FOR_EACH_ENTRY(var1, &ctx->extern_vars, struct hlsl_ir_var, extern_entry) + { + buffer = var1->buffer; + if (!buffer) + continue; + + if (var1->offset_reservation.type == 'c') + buffer->manually_packed_elements = true; + else + buffer->automatically_packed_elements = true; + + if (buffer->manually_packed_elements && buffer->automatically_packed_elements) + { + hlsl_error(ctx, &buffer->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION, + "packoffset() must be specified for all the buffer elements, or none of them."); + break; + } + } }
static void allocate_buffers(struct hlsl_ctx *ctx) diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index d8cfc351..8c6e1724 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -305,7 +305,7 @@ draw quad probe all rgba (512.0, 612.0, 712.0, 812.0)
-[pixel shader fail todo] +[pixel shader fail] // packoffset cannot be used unless all elements use it. cbuffer buffer {
From: Francisco Casas fcasas@codeweavers.com
--- libs/vkd3d-shader/hlsl.y | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y index 3cc145af..3d4c0ef2 100644 --- a/libs/vkd3d-shader/hlsl.y +++ b/libs/vkd3d-shader/hlsl.y @@ -1123,6 +1123,9 @@ static struct hlsl_reg_reservation parse_packoffset(struct hlsl_ctx *ctx, const struct hlsl_reg_reservation reservation = {0}; char *endptr;
+ if (ctx->profile->major_version < 4) + return reservation; + reservation.index = strtoul(reg_string + 1, &endptr, 10); if (*endptr) {
From: Francisco Casas fcasas@codeweavers.com
--- tests/cbuffer.shader_test | 259 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 259 insertions(+)
diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index 8c6e1724..e95a5235 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -444,3 +444,262 @@ float4 main() : sv_target { return 0; } + + +[texture 0] +size (1, 1) +0.0 0.0 0.0 4.0 + +[sampler 0] +filter linear linear linear +address clamp clamp clamp + + +[pixel shader] +// Resources are allowed inside constant buffers but they behave as regular resources. +cbuffer buffer +{ + float4 a; + Texture2D tex; + sampler sam; + float4 b; +} + +float4 main() : sv_target +{ + return a + b + tex.Sample(sam, float2(0, 0)); +} + +[test] +uniform 0 float4 1.0 0.0 0.0 0.0 +uniform 4 float4 0.0 2.0 0.0 0.0 +uniform 8 float4 0.0 0.0 3.0 0.0 +draw quad +probe all rgba (1.0, 2.0, 0.0, 4.0) + + +% packoffset() cannot be used to specify other types of registers +[pixel shader fail] +cbuffer buffer +{ + sampler sam : packoffset(s0); +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail] +cbuffer buffer +{ + Texture2D tex : packoffset(t0); +} + +float4 main() : sv_target +{ + return 0; +} + + +[texture 0] +size (1, 1) +1.0 1.0 1.0 1.0 + +[texture 1] +size (1, 1) +2.0 2.0 2.0 2.0 + + +[pixel shader] +// packoffset() can be used in Textures, doesn't change the allocated t register. +cbuffer buffer +{ + Texture2D tex : packoffset(c1); +} + +float4 main() : sv_target +{ + return tex.Load(int3(0, 0, 0)); +} + +[test] +draw quad +probe all rgba (1.0, 1.0, 1.0, 1.0) + + +% Samplers cannot have packoffset(), unless register() is also specified, or they are not used. +% Note: In SM1 the rules are different: packoffset() is allowed for samplers, but they cannot be +% used together with other numeric fields, which seems like a bug. +[pixel shader fail todo] +Texture2D tex; + +cbuffer buffer +{ + sampler sam : packoffset(c1); +} + +float4 main() : sv_target +{ + return tex.Sample(sam, float2(0, 0)); +} + +[pixel shader todo] +Texture2D tex; + +cbuffer buffer +{ + sampler sam : packoffset(c1) : register(s0); +} + +float4 main() : sv_target +{ + return tex.Sample(sam, float2(0, 0)); +} + +[pixel shader] +cbuffer buffer +{ + sampler sam : packoffset(c1); +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader] +cbuffer buffer +{ + sampler sam : packoffset(c1); + float4 a : packoffset(c0); +} + +float4 main() : sv_target +{ + return a; +} + + +% When packoffset is used in one field, resources are also expected to have a reservation. +[pixel shader fail] +cbuffer buffer +{ + float4 foo : packoffset(c0); + Texture2D tex; +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail] +cbuffer buffer +{ + float4 foo : packoffset(c0); + sampler sam; +} + +float4 main() : sv_target +{ + return 0; +} + +% register() can be used instead of packoffset(). +[pixel shader todo] +cbuffer buffer +{ + float4 foo : packoffset(c0); + Texture2D tex : register(t1); +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader todo] +cbuffer buffer +{ + float4 foo : packoffset(c0); + sampler sam : register(s1); +} + +float4 main() : sv_target +{ + return 0; +} + +% Using register() alone is considered manual packing for resources, so the other fields expect packoffset(). +[pixel shader fail todo] +cbuffer buffer +{ + float4 foo; + Texture2D tex : register(t1); +} + +float4 main() : sv_target +{ + return 0; +} + +[pixel shader fail todo] +cbuffer buffer +{ + float4 foo; + sampler sam : register(s1); +} + +float4 main() : sv_target +{ + return 0; +} + +% Using register() alone is not considered manual packing for non-resources. +[pixel shader] +cbuffer buffer +{ + float4 foo : register(c0); + Texture2D tex; +} + +float4 main() : sv_target +{ + return 0; +} + + +[require] +shader model >= 5.0 + +[texture 0] +size (1, 1) +0.0 0.0 0.0 0.5 + +[pixel shader todo] +struct apple +{ + float2 a; + Texture2D tex; + float b; +}; + +cbuffer buffer +{ + float4 foo : packoffset(c3); + struct apple bar : packoffset(c1); +} + +float4 main() : sv_target +{ + return 10 * foo + float4(bar.a, 0, 0) + float4(0, 0, bar.b, 0) + bar.tex.Load(int3(0, 0, 0)); +} + +[test] +uniform 0 float4 0.0 1.0 2.0 3.0 +uniform 4 float4 4.0 5.0 6.0 7.0 +uniform 8 float4 8.0 9.0 10.0 11.0 +uniform 12 float4 12.0 13.0 14.0 15.0 +todo draw quad +todo probe all rgba (124.0, 135.0, 146.0, 150.5)
From: Francisco Casas fcasas@codeweavers.com
--- libs/vkd3d-shader/hlsl_codegen.c | 5 +++-- tests/cbuffer.shader_test | 8 ++++---- 2 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c index 269543d9..4729d0b2 100644 --- a/libs/vkd3d-shader/hlsl_codegen.c +++ b/libs/vkd3d-shader/hlsl_codegen.c @@ -2948,10 +2948,11 @@ static void validate_buffer_offsets(struct hlsl_ctx *ctx) LIST_FOR_EACH_ENTRY(var1, &ctx->extern_vars, struct hlsl_ir_var, extern_entry) { buffer = var1->buffer; - if (!buffer) + if (!buffer || buffer == ctx->globals_buffer) continue;
- if (var1->offset_reservation.type == 'c') + if (var1->offset_reservation.type + || (var1->data_type->type == HLSL_CLASS_OBJECT && var1->reg_reservation.type)) buffer->manually_packed_elements = true; else buffer->automatically_packed_elements = true; diff --git a/tests/cbuffer.shader_test b/tests/cbuffer.shader_test index e95a5235..9cf42d9d 100644 --- a/tests/cbuffer.shader_test +++ b/tests/cbuffer.shader_test @@ -607,7 +607,7 @@ float4 main() : sv_target }
% register() can be used instead of packoffset(). -[pixel shader todo] +[pixel shader] cbuffer buffer { float4 foo : packoffset(c0); @@ -619,7 +619,7 @@ float4 main() : sv_target return 0; }
-[pixel shader todo] +[pixel shader] cbuffer buffer { float4 foo : packoffset(c0); @@ -632,7 +632,7 @@ float4 main() : sv_target }
% Using register() alone is considered manual packing for resources, so the other fields expect packoffset(). -[pixel shader fail todo] +[pixel shader fail] cbuffer buffer { float4 foo; @@ -644,7 +644,7 @@ float4 main() : sv_target return 0; }
-[pixel shader fail todo] +[pixel shader fail] cbuffer buffer { float4 foo;
Okay, but I think these SM1 tests should be part of a different MR, since we can't specify those requirements in the shader_runner yet. Perhaps they should be in a different file too.
That's fine, as long as we do indeed get them in at some point soon (and as long as the implementation doesn't contradict them).
I am currently more inclined to keep them separated. Because this way we won't have to worry about "merging" two or more `struct hlsl_reg_reservations` (say, one that was returned by `parse_reg_reservation()` and other returned by `parse_packoffset()`) in the parser when we add support for parsing multiple register() and packoffset()s for the same cbuffer element.
I don't see what's difficult about merging them? In terms of colon_attribute parsing I think it'd look almost identical, it'd just be a difference of checking e.g. "$1.packoffset_reservation.type" vs "$1.reg_reservation.packoffset_type".
Zebediah Figura (@zfigura) commented about libs/vkd3d-shader/hlsl.y:
- {
if (strlen(swizzle) != 1)hlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION,"Invalid packoffset() swizzle \"%s\".", swizzle);if (swizzle[0] == 'x' || swizzle[0] == 'r')reservation.index += 0;else if (swizzle[0] == 'y' || swizzle[0] == 'g')reservation.index += 1;else if (swizzle[0] == 'z' || swizzle[0] == 'b')reservation.index += 2;else if (swizzle[0] == 'w' || swizzle[0] == 'a')reservation.index += 3;elsehlsl_error(ctx, loc, VKD3D_SHADER_ERROR_HLSL_INVALID_RESERVATION,"Invalid packoffset() swizzle \"%s\".", swizzle);
Here too I'd say "component" rather than "swizzle".
-
Francisco Casas -
Francisco Casas (＠fcasas)
-
Zebediah Figura (＠zfigura)