39 lines
1.6 KiB
C++
39 lines
1.6 KiB
C++
// Copyright (C) 2020 Jérôme Leclercq
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// This file is part of the "Nazara Engine - OpenGL Renderer"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/OpenGLRenderer/OpenGLTextureSampler.hpp>
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#include <Nazara/OpenGLRenderer/Utils.hpp>
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#include <stdexcept>
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#include <Nazara/OpenGLRenderer/Debug.hpp>
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namespace Nz
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{
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OpenGLTextureSampler::OpenGLTextureSampler(OpenGLDevice& device, const TextureSamplerInfo& samplerInfo)
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{
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BuildSampler(device, m_samplerWithMipmaps, samplerInfo, true);
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BuildSampler(device, m_samplerWithoutMipmaps, samplerInfo, false);
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}
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void OpenGLTextureSampler::BuildSampler(OpenGLDevice& device, GL::Sampler& sampler, const TextureSamplerInfo& samplerInfo, bool withMipmaps)
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{
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if (!sampler.Create(device))
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throw std::runtime_error("failed to create sampler object");
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// In OpenGL, min and mipmap sampler are part of the same enum (and mipmaps filter should only be used with mipmaps)
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if (withMipmaps)
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sampler.SetParameteri(GL_TEXTURE_MIN_FILTER, ToOpenGL(samplerInfo.minFilter, samplerInfo.mipmapMode));
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else
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sampler.SetParameteri(GL_TEXTURE_MIN_FILTER, ToOpenGL(samplerInfo.minFilter));
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sampler.SetParameteri(GL_TEXTURE_MAG_FILTER, ToOpenGL(samplerInfo.magFilter));
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sampler.SetParameteri(GL_TEXTURE_WRAP_S, ToOpenGL(samplerInfo.wrapModeU));
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sampler.SetParameteri(GL_TEXTURE_WRAP_T, ToOpenGL(samplerInfo.wrapModeV));
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sampler.SetParameteri(GL_TEXTURE_WRAP_R, ToOpenGL(samplerInfo.wrapModeW));
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if (samplerInfo.anisotropyLevel > 1.f)
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sampler.SetParameterf(GL_TEXTURE_MAX_ANISOTROPY_EXT, samplerInfo.anisotropyLevel);
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}
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}
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