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obs-StreamFX/source/obs/gs/gs-mipmapper.hpp

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gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
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/*
* Modern effects for a modern Streamer
* Copyright (C) 2017 Michael Fabian Dirks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#pragma once
project: Improve Linux support (#27 and #13) While Linux was not an original goal of the project, it should still be supported out of the box. Therefore a number of changes are contained in this changeset: - All C++ .h files were renamed to .hpp. - All C includes (<....h>) were replaced with C++ includes (<c...>) and missing includes were added. - std::memset and std::memcpy was replaced with memset and memcpy. - All anonymous structs were removed where necessary. - `extern "C"` was removed where it wasn't needed. - #pragma warning was placed behind an #ifdef _MSC_VER - The macros for `min`, `max` and `clamp` were removed as they were not used. - `-fpedantic` was added to the GCC flags for bitmask support. - `gs::rendertarget_op` is now declared before use. - std::exception(const char*) was replaced with std::runtime_error(const char*). - Added aligned_alloc and aligned_free macros for GCC and MSVC support. - Replaced use of `sprintf_s` with `snprintf`. - Placed additional guards around windows only code. Additonally some changes were made that do not affect Linux: - `NOMINMAX` and `NOINOUT` were removed. Fixes: #27 Fixes: #13
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#include "gs-effect.hpp"
#include "gs-rendertarget.hpp"
#include "gs-texture.hpp"
#include "gs-vertexbuffer.hpp"
gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
2017-09-17 20:35:48 +00:00
project: Improve Linux support (#27 and #13) While Linux was not an original goal of the project, it should still be supported out of the box. Therefore a number of changes are contained in this changeset: - All C++ .h files were renamed to .hpp. - All C includes (<....h>) were replaced with C++ includes (<c...>) and missing includes were added. - std::memset and std::memcpy was replaced with memset and memcpy. - All anonymous structs were removed where necessary. - `extern "C"` was removed where it wasn't needed. - #pragma warning was placed behind an #ifdef _MSC_VER - The macros for `min`, `max` and `clamp` were removed as they were not used. - `-fpedantic` was added to the GCC flags for bitmask support. - `gs::rendertarget_op` is now declared before use. - std::exception(const char*) was replaced with std::runtime_error(const char*). - Added aligned_alloc and aligned_free macros for GCC and MSVC support. - Replaced use of `sprintf_s` with `snprintf`. - Placed additional guards around windows only code. Additonally some changes were made that do not affect Linux: - `NOMINMAX` and `NOINOUT` were removed. Fixes: #27 Fixes: #13
2019-01-14 10:23:21 +00:00
// OBS
project: Additional #ifdef _MSC_VER checks
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#ifdef _MSC_VER
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
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#pragma warning(push)
#pragma warning(disable : 4201)
project: Additional #ifdef _MSC_VER checks
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#endif
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
#include <graphics/graphics.h>
project: Additional #ifdef _MSC_VER checks
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#ifdef _MSC_VER
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
#pragma warning(pop)
project: Additional #ifdef _MSC_VER checks
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#endif
gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
2017-09-17 20:35:48 +00:00
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
namespace gs {
class mipmapper {
project: Apply new coding guidelines
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std::unique_ptr<gs::vertex_buffer> _vb;
std::unique_ptr<gs::rendertarget> _rt;
std::unique_ptr<gs::effect> _effect;
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
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public:
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
enum class generator : uint8_t {
Point,
Linear,
Sharpen,
Smoothen,
Bicubic,
Lanczos,
};
gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
2017-09-17 20:35:48 +00:00
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
public:
~mipmapper();
mipmapper();
gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
2017-09-17 20:35:48 +00:00
gs-mipmapper: Formatting and refactoring
2018-09-28 21:32:35 +00:00
void rebuild(std::shared_ptr<gs::texture> source, std::shared_ptr<gs::texture> target,
gs::mipmapper::generator generator, float_t strength);
gs, effects: Anisotropic Mipmapper Class End goal of this is to be an anisotropic filtering purely on the GPU without any actual mipmaps in the graphics subsystem. The basic idea behind it is that we can create all possible mipmaps in a twice as big texture as the original and then can efficiently render it no matter the GPU features as it will only consume one sampler. The texture that it outputs will have both horizontal, vertical and full mipmaps in it. Horizontal mipmaps reduce Width, Vertical mipmaps reduce Height and full mipmaps reduce both. This means that LoD levels are both possible in the X and Y direction, allowing for much greater precision mipmapping on all GPUs. This is a temporary solution until we can directly copy updated textures to a mipmap level.
2017-09-17 20:35:48 +00:00
};
gs-mipmapper: Early attempts at proper mipmap rendering This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
2018-09-27 04:09:43 +00:00
} // namespace gs
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