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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2022 Blender Foundation. */
/** \file
* \ingroup draw
*/
#include "GPU_compute.h"
#include "draw_manager.h"
#include "draw_manager.hh"
#include "draw_shader.h"
namespace blender::draw {
void Manager::begin_sync()
{
#ifdef DEBUG
/* Detect non-init data. */
memset(matrix_buf.data(), 0xF0, resource_len * sizeof(*matrix_buf.data()));
memset(bounds_buf.data(), 0xF0, resource_len * sizeof(*bounds_buf.data()));
memset(infos_buf.data(), 0xF0, resource_len * sizeof(*infos_buf.data()));
#endif
resource_len = 0;
/* TODO(fclem): Resize buffers if too big, but with an hysteresis threshold. */
object_active = DST.draw_ctx.obact;
/* Init the 0 resource. */
resource_handle(float4x4::identity());
}
void Manager::end_sync()
{
/* Make sure all buffers have the right amount of data. */
matrix_buf.get_or_resize(resource_len - 1);
bounds_buf.get_or_resize(resource_len - 1);
infos_buf.get_or_resize(resource_len - 1);
/* Dispatch compute to finalize the resources on GPU. Save a bit of CPU time. */
uint thread_groups = divide_ceil_u(resource_len, DRW_FINALIZE_GROUP_SIZE);
GPUShader *shader = DRW_shader_draw_resource_finalize_get();
GPU_shader_bind(shader);
GPU_shader_uniform_1i(shader, "resource_len", resource_len);
GPU_storagebuf_bind(matrix_buf, 0);
GPU_storagebuf_bind(bounds_buf, 1);
GPU_storagebuf_bind(infos_buf, 2);
GPU_compute_dispatch(shader, thread_groups, 1, 1);
}
void Manager::submit(PassSimple &pass)
{
command::RecordingState state;
pass.submit(state);
}
void Manager::submit(PassMain &pass, View &view)
{
view.bind();
view.compute_visibility(bounds_buf, resource_len);
GPU_storagebuf_bind(matrix_buf, DRW_OBJ_MAT_SLOT);
GPU_storagebuf_bind(infos_buf, DRW_OBJ_INFOS_SLOT);
// GPU_storagebuf_bind(attribute_buf, DRW_OBJ_ATTR_SLOT); /* TODO */
command::RecordingState state;
pass.draw_commands_buf_.bind(pass.headers_, pass.commands_, resource_id_buf);
GPU_storagebuf_bind(resource_id_buf, DRW_COMMAND_SLOT);
pass.submit(state);
}
} // namespace blender::draw
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