9df5f2c495
This PR implements indirect drawing for the Vulkan backend. Indirect drawing is a requirement for workbench-next. NOTE: that this is one of multiple changes needed to get to the same support level. With this patch only objects at the center of the world are drawn correctly. Pull Request: https://projects.blender.org/blender/blender/pulls/111334
108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
/* SPDX-FileCopyrightText: 2022 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup gpu
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*/
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#include "vk_batch.hh"
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#include "vk_context.hh"
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#include "vk_index_buffer.hh"
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#include "vk_state_manager.hh"
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#include "vk_storage_buffer.hh"
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#include "vk_vertex_attribute_object.hh"
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#include "vk_vertex_buffer.hh"
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namespace blender::gpu {
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void VKBatch::draw_setup()
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{
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/* Currently the pipeline is rebuild on each draw command. Clearing the dirty flag for
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* consistency with the internals of GPU module. */
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flag &= ~GPU_BATCH_DIRTY;
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/* Finalize graphics pipeline */
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VKContext &context = *VKContext::get();
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VKStateManager &state_manager = context.state_manager_get();
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state_manager.apply_state();
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state_manager.apply_bindings();
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VKVertexAttributeObject vao;
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vao.update_bindings(context, *this);
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context.bind_graphics_pipeline(prim_type, vao);
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/* Bind geometry resources. */
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vao.bind(context);
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VKIndexBuffer *index_buffer = index_buffer_get();
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const bool draw_indexed = index_buffer != nullptr;
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if (draw_indexed) {
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index_buffer->upload_data();
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index_buffer->bind(context);
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}
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}
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void VKBatch::draw(int vertex_first, int vertex_count, int instance_first, int instance_count)
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{
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draw_setup();
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VKContext &context = *VKContext::get();
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VKCommandBuffer &command_buffer = context.command_buffer_get();
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VKIndexBuffer *index_buffer = index_buffer_get();
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const bool draw_indexed = index_buffer != nullptr;
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if (draw_indexed) {
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command_buffer.draw_indexed(index_buffer->index_len_get(),
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instance_count,
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index_buffer->index_start_get(),
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vertex_first,
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instance_first);
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}
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else {
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command_buffer.draw(vertex_first, vertex_count, instance_first, instance_count);
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}
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command_buffer.submit();
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}
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void VKBatch::draw_indirect(GPUStorageBuf *indirect_buf, intptr_t offset)
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{
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multi_draw_indirect(indirect_buf, 1, offset, 0);
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}
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void VKBatch::multi_draw_indirect(GPUStorageBuf *indirect_buf,
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int count,
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intptr_t offset,
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intptr_t stride)
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{
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draw_setup();
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VKStorageBuffer &indirect_buffer = *unwrap(unwrap(indirect_buf));
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VKContext &context = *VKContext::get();
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const bool draw_indexed = index_buffer_get() != nullptr;
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VKCommandBuffer &command_buffer = context.command_buffer_get();
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if (draw_indexed) {
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command_buffer.draw_indexed_indirect(indirect_buffer, offset, count, stride);
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}
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else {
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command_buffer.draw_indirect(indirect_buffer, offset, count, stride);
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}
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command_buffer.submit();
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}
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VKVertexBuffer *VKBatch::vertex_buffer_get(int index)
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{
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return unwrap(verts_(index));
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}
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VKVertexBuffer *VKBatch::instance_buffer_get(int index)
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{
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return unwrap(inst_(index));
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}
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VKIndexBuffer *VKBatch::index_buffer_get()
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{
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return unwrap(unwrap(elem));
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}
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} // namespace blender::gpu
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