X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fspirv.cpp;h=61e5937856b30d7abc38afc2d5143b03e1ca4b1e;hb=c585c065b7831eb6ae05e48edc36953d2534db2b;hp=61e2d594e6c641105379dfd6c671a82b1991f5fa;hpb=215d5bed27ad3de92557ae1b631695a036d29741;p=libs%2Fgl.git

diff --git a/source/glsl/spirv.cpp b/source/glsl/spirv.cpp
index 61e2d594..61e59378 100644
--- a/source/glsl/spirv.cpp
+++ b/source/glsl/spirv.cpp
@@ -1304,7 +1304,7 @@ void SpirVGenerator::visit_builtin_texture_query(FunctionCall &call, const vecto
 	ImageTypeDeclaration &image_arg0 = dynamic_cast<ImageTypeDeclaration &>(*call.arguments[0]->type);
 
 	Id image_id;
-	if(image_arg0.sampled)
+	if(image_arg0.sampled && opcode!=OP_IMAGE_QUERY_LOD)
 	{
 		Id image_type_id = get_item(image_type_ids, get_id(image_arg0));
 		image_id = write_expression(OP_IMAGE, image_type_id, argument_ids[0]);
@@ -1371,17 +1371,25 @@ void SpirVGenerator::visit_builtin_texture(FunctionCall &call, const vector<Id>
 
 void SpirVGenerator::visit_builtin_texel_fetch(FunctionCall &call, const vector<Id> &argument_ids)
 {
-	if(argument_ids.size()!=3)
-		throw internal_error("invalid texelFetch call");
-
 	const ImageTypeDeclaration &image = dynamic_cast<const ImageTypeDeclaration &>(*call.arguments[0]->type);
 
-	r_expression_result_id = begin_expression(OP_IMAGE_FETCH, get_id(*call.type), 4);
+	Opcode opcode = OP_IMAGE_FETCH;
+
+	bool need_sample = image.multisample;
+	bool need_lod = !need_sample;
+
+	if(argument_ids.size()!=2U+need_sample+need_lod)
+		throw internal_error("invalid texture fetch call");
+
+	r_expression_result_id = begin_expression(opcode, get_id(*call.type), 2+(need_lod|need_sample)+need_lod+need_sample);
 	for(unsigned i=0; i<2; ++i)
 		writer.write(argument_ids[i]);
-	writer.write(image.multisample ? 0x40 : 0x02);  // Sample or Lod
-	writer.write(argument_ids.back());
-	end_expression(OP_IMAGE_FETCH);
+	if(need_lod || need_sample)
+	{
+		writer.write(need_lod*0x02 | need_sample*0x40);
+		writer.write(argument_ids.back());
+	}
+	end_expression(opcode);
 }
 
 void SpirVGenerator::visit_builtin_interpolate(FunctionCall &call, const vector<Id> &argument_ids)