hopefully better synchronization

src/application.cpp

@@ -364,32 +364,16 @@ void Application::drawFrame(float dt) {
 		vertexBufferBarrier.size = vertexBuffers[currentDrawVertexBuffer]->size;
 		vertexBufferBarrier.offset = 0;
 		vertexBufferBarrier.buffer = vertexBuffers[currentDrawVertexBuffer]->handle;
-		vertexBufferBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+		vertexBufferBarrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT;
 		vertexBufferBarrier.dstAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT;
 
-		vkCmdPipelineBarrier(cmdBuffer, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT, 0, 0,
-							 nullptr, 1, &vertexBufferBarrier, 0, nullptr);
-
-		VkBufferMemoryBarrier uniformBufferBarrier {};
-		uniformBufferBarrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
-		uniformBufferBarrier.size = cameraUniformBuffer->size;
-		uniformBufferBarrier.offset = 0;
-		uniformBufferBarrier.buffer = cameraUniformBuffer->handle;
-		uniformBufferBarrier.srcAccessMask = VK_ACCESS_HOST_WRITE_BIT;
-		uniformBufferBarrier.dstAccessMask = VK_ACCESS_UNIFORM_READ_BIT;
-
-		vkCmdPipelineBarrier(cmdBuffer, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0,
-							 0, nullptr, 1, &uniformBufferBarrier, 0, nullptr);
-
 		VkMemoryBarrier barrier {};
 		barrier.sType = VK_STRUCTURE_TYPE_MEMORY_BARRIER;
-		barrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT | VK_ACCESS_TRANSFER_WRITE_BIT | VK_ACCESS_MEMORY_WRITE_BIT;
+		barrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT;
 		barrier.dstAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT;
 
-		vkCmdPipelineBarrier(cmdBuffer,
-							 VK_PIPELINE_STAGE_TRANSFER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
-							 VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, 0, 1, &barrier,
-							 0, nullptr, 0, nullptr);
+		vkCmdPipelineBarrier(cmdBuffer, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT, 0, 1,
+							 &barrier, 1, &vertexBufferBarrier, 0, nullptr);
 
 		VkRenderPassBeginInfo renderPassInfo{};
 		renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
@@ -523,7 +507,7 @@ void Application::update() {
 		vkBeginCommandBuffer(cmdBuffer, &beginInfo);
 
 		VkBufferCopy copyRegion {};
-		copyRegion.size = vertexBuffers[0]->size;
+		copyRegion.size = vertexBuffers[1 - currentDrawVertexBuffer]->size;
 		copyRegion.srcOffset = 0;
 		copyRegion.dstOffset = 0;
 
@@ -681,7 +665,9 @@ void Application::recordNormalCommands(VkCommandBuffer cmdBuffer) {
 	state = 2;
 	vkCmdPushConstants(cmdBuffer, normalPipeline->layout, VK_SHADER_STAGE_COMPUTE_BIT, 0, sizeof(uint32_t), &state);
 	vkCmdDispatch(cmdBuffer, vertexGroupCount, 1, 1);
-	vkCmdPipelineBarrier(cmdBuffer, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 1, &barrier, 0, nullptr, 0, nullptr);
+
+	barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
+	vkCmdPipelineBarrier(cmdBuffer, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 1, &barrier, 0, nullptr, 0, nullptr);
 }