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Preserve layout location attribs for VAOs

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Kovid Goyal
2026-07-02 13:34:35 +05:30
parent d114cb1554
commit fe84bc9225
2 changed files with 12 additions and 7 deletions
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3
kitty/shaders/cell.slang
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@@ -64,7 +64,8 @@ static const uint cursor_shape_map[] = { // maps cursor shape to foreground spr
4u // UNFOCUSED
};
// Vertex Input Attributes with explicit fixed locations
// Vertex Input Attributes with explicit fixed locations. We use fixed
// locations as all variants of the cell program share the same VAOs
struct VertexInput
{
[[vk::location(0)]] uint3 colors;

16
kitty/shaders/slang.py
View File

@@ -354,7 +354,8 @@ def commands_to_compile_to_glsl(sources: dict[str, SlangFile], build_dir: str, d
yield Command(needs_build, f'Linking |{os.path.basename(slang_module)}| to GLSL {ep.stage.value} shader ...', c)
def fixup_opengl_code(glsl_code: str) -> tuple[str, dict[str, Any]]:
def fixup_opengl_code(glsl_code: str, path: str) -> tuple[str, dict[str, Any]]:
is_fragment_shader = 'frag' in os.path.basename(path).split()
lines = []
in_uniform_block = False
in_uniform_block_contents = False
@@ -369,11 +370,12 @@ def fixup_opengl_code(glsl_code: str) -> tuple[str, dict[str, Any]]:
name = name.rstrip(';')
uniform_name = name.rpartition('_')[0]
if uniform_name in uniform_names:
raise KeyError(f'The uniform name {uniform_name} is used with multiple suffixes')
raise KeyError(f'The uniform name {uniform_name} is used with multiple suffixes in {path}')
uniform_names[uniform_name] = name
return name
src_lines = glsl_code.splitlines()
for line in glsl_code.splitlines():
for i, line in enumerate(src_lines):
if in_uniform_block:
if in_uniform_block_contents:
if line.startswith('}'):
@@ -403,7 +405,9 @@ def fixup_opengl_code(glsl_code: str) -> tuple[str, dict[str, Any]]:
line = '#version 330 core'
elif line.startswith('#extension ') or line in ('layout(row_major) buffer;', 'layout(push_constant)'):
line = '// ' + line
elif line.startswith('layout(location =') or line.startswith('layout(binding ='):
elif line.startswith('layout(binding ='):
line = '// ' + line
elif line.startswith('layout(location =') and not is_fragment_shader:
line = '// ' + line
elif line.startswith('flat layout(location ='):
line = 'flat'
@@ -437,12 +441,12 @@ def fixup_opengl_files(*paths: str) -> None:
for path in paths:
with open(path, 'r+') as f:
glsl_code = f.read()
fixed, metadata = fixup_opengl_code(glsl_code, path)
f.seek(0)
f.truncate()
fixed, uniform_names = fixup_opengl_code(glsl_code)
f.write(fixed)
with open(path + '.json', 'w') as f:
f.write(json.dumps(uniform_names))
f.write(json.dumps(metadata))
ParallelRun = Callable[[Iterable[tuple[bool, str, list[str]]]], None]