mewin/glslang
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

SPV 1.4: Lookup tables: Use variable initializer and NonWritable...

Browse Source 
...when doing a variable lookup on an array of constants.
This commit is contained in:
John Kessenich
2019-02-07 08:04:12 -07:00
parent fbb6bdf046
commit 61a5ce190a
6 changed files with 102 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
Test/baseResults/spv.1.4.NonWritable.frag.out Executable file
View File

@@ -0,0 +1,59 @@
spv.1.4.NonWritable.frag
Validation failed
// Module Version 10400
// Generated by (magic number): 80007
// Id's are bound by 38
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 4 "main" 8 31
ExecutionMode 4 OriginUpperLeft
Source GLSL 450
Name 4 "main"
Name 8 "color"
Name 31 "index"
Name 34 "indexable"
Decorate 8(color) Location 0
Decorate 31(index) Flat
Decorate 31(index) Location 0
Decorate 34(indexable) NonWritable
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypePointer Output 6(float)
8(color): 7(ptr) Variable Output
9: TypeInt 32 0
10: 9(int) Constant 16
11: TypeArray 6(float) 10
12: 6(float) Constant 1065353216
13: 6(float) Constant 1073741824
14: 6(float) Constant 1077936128
15: 6(float) Constant 1082130432
16: 6(float) Constant 1084227584
17: 6(float) Constant 1086324736
18: 6(float) Constant 1088421888
19: 6(float) Constant 1090519040
20: 6(float) Constant 1091567616
21: 6(float) Constant 1092616192
22: 6(float) Constant 1093664768
23: 6(float) Constant 1094713344
24: 6(float) Constant 1095761920
25: 6(float) Constant 1096810496
26: 6(float) Constant 1097859072
27: 6(float) Constant 1098907648
28: 11 ConstantComposite 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
29: TypeInt 32 1
30: TypePointer Input 29(int)
31(index): 30(ptr) Variable Input
33: TypePointer Function 11
35: TypePointer Function 6(float)
4(main): 2 Function None 3
5: Label
34(indexable): 33(ptr) Variable Function 28
32: 29(int) Load 31(index)
36: 35(ptr) AccessChain 34(indexable) 32
37: 6(float) Load 36
Store 8(color) 37
Return
FunctionEnd

13
Test/spv.1.4.NonWritable.frag Executable file
View File

@@ -0,0 +1,13 @@
#version 450
layout(location = 0) flat in int index;
layout(location = 0) out float color;
// lookup table
const float table[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
void main()
{
color = table[index];
}