From: Giovanni Mascellani gmascellani@codeweavers.com
Because that's the granularity of Constant Buffer accesses in SM4. This commit requires using more push constants, but without it the generated SPIR-V can be invalid. --- libs/vkd3d/state.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libs/vkd3d/state.c b/libs/vkd3d/state.c index 6665a1fd6..148d678bf 100644 --- a/libs/vkd3d/state.c +++ b/libs/vkd3d/state.c @@ -515,7 +515,7 @@ static HRESULT d3d12_root_signature_init_push_constants(struct d3d12_root_signat assert(p->ShaderVisibility <= D3D12_SHADER_VISIBILITY_PIXEL); push_constants[p->ShaderVisibility].stageFlags = use_vk_heaps ? VK_SHADER_STAGE_ALL : stage_flags_from_visibility(p->ShaderVisibility); - push_constants[p->ShaderVisibility].size += p->u.Constants.Num32BitValues * sizeof(uint32_t); + push_constants[p->ShaderVisibility].size += align(p->u.Constants.Num32BitValues, 4) * sizeof(uint32_t); } if (push_constants[D3D12_SHADER_VISIBILITY_ALL].size) { @@ -564,7 +564,7 @@ static HRESULT d3d12_root_signature_init_push_constants(struct d3d12_root_signat
idx = push_constant_count == 1 ? 0 : p->ShaderVisibility; offset = push_constants_offset[idx]; - push_constants_offset[idx] += p->u.Constants.Num32BitValues * sizeof(uint32_t); + push_constants_offset[idx] += align(p->u.Constants.Num32BitValues, 4) * sizeof(uint32_t);
root_signature->parameters[i].parameter_type = p->ParameterType; root_constant->stage_flags = push_constant_count == 1