Do not create various RT pipelines without RT support

For now we'll keep the shading code RT-only: to make it functional
without RT we need to do odd layout transitions, and we might decide we
need to trace rays from that CS in the future again for some other
reason.

src/niagara.cpp

@@ -638,9 +638,16 @@ int main(int argc, const char** argv)
 	}
 
 	Program blitProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["blit.comp"] }, sizeof(vec4));
-	Program shadeProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["shade.comp"] }, sizeof(ShadeData));
-	Program shadowProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["shadow.comp"] }, sizeof(ShadowData));
-	Program shadowblurProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["shadowblur.comp"] }, sizeof(vec4));
+
+	Program shadeProgram = {};
+	Program shadowProgram = {};
+	Program shadowblurProgram = {};
+	if (raytracingSupported)
+	{
+		shadeProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["shade.comp"] }, sizeof(ShadeData));
+		shadowProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["shadow.comp"] }, sizeof(ShadowData));
+		shadowblurProgram = createProgram(device, VK_PIPELINE_BIND_POINT_COMPUTE, { &shaders["shadowblur.comp"] }, sizeof(vec4));
+	}
 
 	VkPipeline drawcullPipeline = 0;
 	VkPipeline drawculllatePipeline = 0;
@@ -700,9 +707,13 @@ int main(int argc, const char** argv)
 		}
 
 		replace(blitPipeline, createComputePipeline(device, pipelineCache, blitProgram));
-		replace(shadePipeline, createComputePipeline(device, pipelineCache, shadeProgram));
-		replace(shadowPipeline, createComputePipeline(device, pipelineCache, shadowProgram));
-		replace(shadowblurPipeline, createComputePipeline(device, pipelineCache, shadowblurProgram));
+
+		if (raytracingSupported)
+		{
+			replace(shadePipeline, createComputePipeline(device, pipelineCache, shadeProgram));
+			replace(shadowPipeline, createComputePipeline(device, pipelineCache, shadowProgram));
+			replace(shadowblurPipeline, createComputePipeline(device, pipelineCache, shadowblurProgram));
+		}
 	};
 
 	pipelines();
@@ -1821,14 +1832,16 @@ int main(int argc, const char** argv)
 	vkDestroyPipeline(device, blitPipeline, 0);
 	destroyProgram(device, blitProgram);
 
-	vkDestroyPipeline(device, shadePipeline, 0);
-	destroyProgram(device, shadeProgram);
-
-	vkDestroyPipeline(device, shadowPipeline, 0);
-	destroyProgram(device, shadowProgram);
+	if (raytracingSupported)
+	{
+		vkDestroyPipeline(device, shadePipeline, 0);
+		destroyProgram(device, shadeProgram);
 
-	vkDestroyPipeline(device, shadowblurPipeline, 0);
-	destroyProgram(device, shadowblurProgram);
+		vkDestroyPipeline(device, shadowPipeline, 0);
+		vkDestroyPipeline(device, shadowblurPipeline, 0);
+		destroyProgram(device, shadowProgram);
+		destroyProgram(device, shadowblurProgram);
+	}
 
 	vkDestroyDescriptorSetLayout(device, textureSetLayout, 0);