From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 2 Apr 2021 09:48:46 +0000 (+0300)
Subject: Fix an error in calculating SPIR-V uniform offsets
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=63383e58b25321188cbc65bf9a6bc7e2a0faaabb;p=libs%2Fgl.git

Fix an error in calculating SPIR-V uniform offsets
---

diff --git a/source/core/program.cpp b/source/core/program.cpp
index f28736bd..6fdf747d 100644
--- a/source/core/program.cpp
+++ b/source/core/program.cpp
@@ -495,15 +495,16 @@ void Program::collect_block_uniforms(UniformBlockInfo &block, const SpirVModule:
 {
 	for(vector<SpirVModule::StructMember>::const_iterator i=strct.members.begin(); i!=strct.members.end(); ++i)
 	{
+		unsigned offset = base_offset+i->offset;
 		if(i->struct_type)
 		{
 			if(i->array_size)
 			{
-				for(unsigned j=0; j<i->array_size; ++j)
-					collect_block_uniforms(block, *i->struct_type, format("%s%s[%d].", prefix, i->name, j), base_offset+i->offset+i->array_stride*j);
+				for(unsigned j=0; j<i->array_size; ++j, offset+=i->array_stride)
+					collect_block_uniforms(block, *i->struct_type, format("%s%s[%d].", prefix, i->name, j), offset);
 			}
 			else
-				collect_block_uniforms(block, *i->struct_type, prefix+i->name+".", base_offset+i->offset);
+				collect_block_uniforms(block, *i->struct_type, prefix+i->name+".", offset);
 		}
 		else
 		{
@@ -511,7 +512,7 @@ void Program::collect_block_uniforms(UniformBlockInfo &block, const SpirVModule:
 			UniformInfo &info = uniforms[name];
 			info.name = name;
 			info.block = &block;
-			info.offset = i->offset;
+			info.offset = offset;
 			info.array_size = i->array_size;
 			info.array_stride = i->array_stride;
 			info.matrix_stride = i->matrix_stride;