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112 lines
4.2 KiB
C++
112 lines
4.2 KiB
C++
/*
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** gl_samplers.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 2014 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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** 4. When not used as part of GZDoom or a GZDoom derivative, this code will be
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** covered by the terms of the GNU Lesser General Public License as published
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** by the Free Software Foundation; either version 2.1 of the License, or (at
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** your option) any later version.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "gl/system/gl_system.h"
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#include "templates.h"
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#include "c_cvars.h"
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#include "c_dispatch.h"
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#include "gl/system/gl_interface.h"
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#include "gl/system/gl_cvars.h"
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#include "gl/renderer/gl_renderer.h"
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#include "gl_samplers.h"
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extern TexFilter_s TexFilter[];
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FSamplerManager::FSamplerManager()
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{
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glGenSamplers(7, mSamplers);
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SetTextureFilterMode();
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glSamplerParameteri(mSamplers[5], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glSamplerParameteri(mSamplers[5], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glSamplerParameterf(mSamplers[5], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
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glSamplerParameterf(mSamplers[4], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
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glSamplerParameterf(mSamplers[6], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
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glSamplerParameteri(mSamplers[1], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glSamplerParameteri(mSamplers[2], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glSamplerParameteri(mSamplers[3], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glSamplerParameteri(mSamplers[3], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glSamplerParameteri(mSamplers[4], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glSamplerParameteri(mSamplers[4], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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FSamplerManager::~FSamplerManager()
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{
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UnbindAll();
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glDeleteSamplers(7, mSamplers);
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}
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void FSamplerManager::UnbindAll()
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{
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for (int i = 0; i < FHardwareTexture::MAX_TEXTURES; i++)
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{
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mLastBound[i] = 0;
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glBindSampler(i, 0);
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}
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}
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void FSamplerManager::Bind(int texunit, int num)
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{
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unsigned int samp = mSamplers[num];
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//if (samp != mLastBound[texunit])
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{
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glBindSampler(texunit, samp);
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mLastBound[texunit] = samp;
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}
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}
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void FSamplerManager::SetTextureFilterMode()
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{
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UnbindAll();
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for (int i = 0; i < 4; i++)
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{
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glSamplerParameteri(mSamplers[i], GL_TEXTURE_MIN_FILTER, TexFilter[gl_texture_filter].minfilter);
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glSamplerParameteri(mSamplers[i], GL_TEXTURE_MAG_FILTER, TexFilter[gl_texture_filter].magfilter);
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glSamplerParameterf(mSamplers[i], GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_texture_filter_anisotropic);
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}
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glSamplerParameteri(mSamplers[4], GL_TEXTURE_MIN_FILTER, TexFilter[gl_texture_filter].magfilter);
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glSamplerParameteri(mSamplers[4], GL_TEXTURE_MAG_FILTER, TexFilter[gl_texture_filter].magfilter);
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glSamplerParameteri(mSamplers[6], GL_TEXTURE_MIN_FILTER, TexFilter[gl_texture_filter].magfilter);
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glSamplerParameteri(mSamplers[6], GL_TEXTURE_MAG_FILTER, TexFilter[gl_texture_filter].magfilter);
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}
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