Jeroen Bakker
6b03621c01
This patch will use compute shaders to create the VBO for hair. The previous implementation uses transform feedback. Timings before: between 0.000069s and 0.000362s. Timings after: between 0.000032s and 0.000092s. Speedup isn't noticeable by end-users. The patch is used to test the new compute shader pipeline and integrate it with the draw manager. Allowing EEVEE, Workbench and other draw engines to use compute shaders with the introduction of `DRW_shgroup_call_compute` and `DRW_shgroup_vertex_buffer`. Future improvements are possible by generating the index buffer of hair directly on the GPU. NOTE: that compute shaders aren't supported by Apple and still use the transform feedback workaround. Reviewed By: fclem Differential Revision: https://developer.blender.org/D11057
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2020, Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#include "GPU_platform.h"
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namespace blender::gpu {
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/**
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* This includes both hardware capabilities & workarounds.
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* Try to limit these to the implementation codebase (i.e.: gpu/opengl/).
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* Only add workarounds here if they are common to all implementation or
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* if you need access to it outside of the GPU module.
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* Same goes for capabilities (i.e.: texture size)
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*/
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struct GPUCapabilities {
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int max_texture_size = 0;
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int max_texture_layers = 0;
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int max_textures = 0;
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int max_textures_vert = 0;
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int max_textures_geom = 0;
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int max_textures_frag = 0;
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int max_work_group_count[3] = {0, 0, 0};
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int max_work_group_size[3] = {0, 0, 0};
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int max_uniforms_vert = 0;
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int max_uniforms_frag = 0;
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int max_batch_indices = 0;
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int max_batch_vertices = 0;
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int max_vertex_attribs = 0;
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int max_varying_floats = 0;
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int extensions_len = 0;
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const char *(*extension_get)(int);
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bool mem_stats_support = false;
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bool compute_shader_support = false;
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bool shader_storage_buffer_objects_support = false;
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bool shader_image_load_store_support = false;
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/* OpenGL related workarounds. */
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bool mip_render_workaround = false;
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bool depth_blitting_workaround = false;
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bool use_main_context_workaround = false;
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bool broken_amd_driver = false;
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bool use_hq_normals_workaround = false;
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/* Vulkan related workarounds. */
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};
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extern GPUCapabilities GCaps;
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} // namespace blender::gpu
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