104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
// Copyright (C) 2024 Jérôme "SirLynix" Leclercq (lynix680@gmail.com)
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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 Export.hpp
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#include <Nazara/Core/Error.hpp>
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#include <stdexcept>
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namespace Nz
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{
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inline void OpenGLTexture::GenerateMipmaps(UInt8 baseLevel, UInt8 levelCount)
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{
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NazaraAssert(baseLevel + levelCount <= m_textureInfo.levelCount, "out of bounds");
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GL::Texture* targetTexture;
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if (RequiresTextureViewEmulation())
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{
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baseLevel += m_viewInfo->baseMipLevel;
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levelCount += m_viewInfo->baseMipLevel;
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targetTexture = &m_parentTexture->m_texture;
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}
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else
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targetTexture = &m_texture;
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if (baseLevel != 0)
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targetTexture->SetParameteri(GL_TEXTURE_BASE_LEVEL, baseLevel);
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if (levelCount != m_textureInfo.levelCount)
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targetTexture->SetParameteri(GL_TEXTURE_MAX_LEVEL, levelCount - 1);
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targetTexture->GenerateMipmap();
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// Reset level config
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if (baseLevel != 0)
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targetTexture->SetParameteri(GL_TEXTURE_BASE_LEVEL, 0);
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if (levelCount != m_textureInfo.levelCount)
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targetTexture->SetParameteri(GL_TEXTURE_MAX_LEVEL, m_textureInfo.levelCount - 1);
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}
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inline PixelFormat OpenGLTexture::GetFormat() const
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{
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return m_textureInfo.pixelFormat;
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}
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inline UInt8 OpenGLTexture::GetLevelCount() const
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{
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return m_textureInfo.levelCount;
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}
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inline OpenGLTexture* OpenGLTexture::GetParentTexture() const
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{
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return m_parentTexture.get();
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}
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inline Vector3ui OpenGLTexture::GetSize(UInt8 level) const
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{
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return Vector3ui(GetLevelSize(m_textureInfo.width, level), GetLevelSize(m_textureInfo.height, level), GetLevelSize(m_textureInfo.depth, level));
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}
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inline const GL::Texture& OpenGLTexture::GetTexture() const
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{
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return m_texture;
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}
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inline const TextureInfo& OpenGLTexture::GetTextureInfo() const
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{
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return m_textureInfo;
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}
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inline const TextureViewInfo& OpenGLTexture::GetTextureViewInfo() const
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{
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assert(m_viewInfo);
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return *m_viewInfo;
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}
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inline ImageType OpenGLTexture::GetType() const
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{
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return m_textureInfo.type;
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}
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inline bool OpenGLTexture::RequiresTextureViewEmulation() const
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{
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return m_viewInfo.has_value() && !m_texture.IsValid();
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}
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inline GL::TextureTarget OpenGLTexture::ToTextureTarget(ImageType imageType)
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{
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switch (imageType)
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{
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case ImageType::E2D: return GL::TextureTarget::Target2D;
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case ImageType::E2D_Array: return GL::TextureTarget::Target2D_Array;
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case ImageType::E3D: return GL::TextureTarget::Target3D;
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case ImageType::Cubemap: return GL::TextureTarget::Cubemap;
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// OpenGL ES doesn't support 1D textures, use 2D textures with a height of 1 instead
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case ImageType::E1D: return GL::TextureTarget::Target2D;
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case ImageType::E1D_Array: return GL::TextureTarget::Target2D_Array;
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}
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throw std::runtime_error("unsupported texture type");
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}
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}
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