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Implement LODBias in GL3 driver

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(currently unused)
This commit is contained in:
sfan5 2024-12-30 17:21:34 +01:00
parent 1ea8763259
commit 8c52d5f2dd
4 changed files with 43 additions and 27 deletions
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64
irr/src/OpenGL/Driver.cpp
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@ -1340,60 +1340,74 @@ void COpenGL3DriverBase::setTextureRenderStates(const SMaterial &material, bool
CacheHandler->setActiveTexture(GL_TEXTURE0 + i);
if (resetAllRenderstates)
tmpTexture->getStatesCache().IsCached = false;
const auto &layer = material.TextureLayers[i];
auto &states = tmpTexture->getStatesCache();
if (!tmpTexture->getStatesCache().IsCached || material.TextureLayers[i].MagFilter != tmpTexture->getStatesCache().MagFilter) {
E_TEXTURE_MAG_FILTER magFilter = material.TextureLayers[i].MagFilter;
if (resetAllRenderstates)
states.IsCached = false;
if (!states.IsCached || layer.MagFilter != states.MagFilter) {
E_TEXTURE_MAG_FILTER magFilter = layer.MagFilter;
GL.TexParameteri(tmpTextureType, GL_TEXTURE_MAG_FILTER,
magFilter == ETMAGF_NEAREST ? GL_NEAREST : (assert(magFilter == ETMAGF_LINEAR), GL_LINEAR));
tmpTexture->getStatesCache().MagFilter = magFilter;
states.MagFilter = magFilter;
}
if (material.UseMipMaps && tmpTexture->hasMipMaps()) {
if (!tmpTexture->getStatesCache().IsCached || material.TextureLayers[i].MinFilter != tmpTexture->getStatesCache().MinFilter ||
!tmpTexture->getStatesCache().MipMapStatus) {
E_TEXTURE_MIN_FILTER minFilter = material.TextureLayers[i].MinFilter;
if (!states.IsCached || layer.MinFilter != states.MinFilter ||
!states.MipMapStatus) {
E_TEXTURE_MIN_FILTER minFilter = layer.MinFilter;
GL.TexParameteri(tmpTextureType, GL_TEXTURE_MIN_FILTER,
minFilter == ETMINF_NEAREST_MIPMAP_NEAREST ? GL_NEAREST_MIPMAP_NEAREST : minFilter == ETMINF_LINEAR_MIPMAP_NEAREST ? GL_LINEAR_MIPMAP_NEAREST
: minFilter == ETMINF_NEAREST_MIPMAP_LINEAR ? GL_NEAREST_MIPMAP_LINEAR
: (assert(minFilter == ETMINF_LINEAR_MIPMAP_LINEAR), GL_LINEAR_MIPMAP_LINEAR));
tmpTexture->getStatesCache().MinFilter = minFilter;
tmpTexture->getStatesCache().MipMapStatus = true;
states.MinFilter = minFilter;
states.MipMapStatus = true;
}
} else {
if (!tmpTexture->getStatesCache().IsCached || material.TextureLayers[i].MinFilter != tmpTexture->getStatesCache().MinFilter ||
tmpTexture->getStatesCache().MipMapStatus) {
E_TEXTURE_MIN_FILTER minFilter = material.TextureLayers[i].MinFilter;
if (!states.IsCached || layer.MinFilter != states.MinFilter ||
states.MipMapStatus) {
E_TEXTURE_MIN_FILTER minFilter = layer.MinFilter;
GL.TexParameteri(tmpTextureType, GL_TEXTURE_MIN_FILTER,
(minFilter == ETMINF_NEAREST_MIPMAP_NEAREST || minFilter == ETMINF_NEAREST_MIPMAP_LINEAR) ? GL_NEAREST : (assert(minFilter == ETMINF_LINEAR_MIPMAP_NEAREST || minFilter == ETMINF_LINEAR_MIPMAP_LINEAR), GL_LINEAR));
tmpTexture->getStatesCache().MinFilter = minFilter;
tmpTexture->getStatesCache().MipMapStatus = false;
states.MinFilter = minFilter;
states.MipMapStatus = false;
}
}
if (LODBiasSupported &&
(!states.IsCached || layer.LODBias != states.LODBias)) {
if (layer.LODBias) {
const float tmp = core::clamp(layer.LODBias * 0.125f, -MaxTextureLODBias, MaxTextureLODBias);
GL.TexParameterf(tmpTextureType, GL.TEXTURE_LOD_BIAS, tmp);
} else
GL.TexParameterf(tmpTextureType, GL.TEXTURE_LOD_BIAS, 0.f);
states.LODBias = layer.LODBias;
}
if (AnisotropicFilterSupported &&
(!tmpTexture->getStatesCache().IsCached || material.TextureLayers[i].AnisotropicFilter != tmpTexture->getStatesCache().AnisotropicFilter)) {
(!states.IsCached || layer.AnisotropicFilter != states.AnisotropicFilter)) {
GL.TexParameteri(tmpTextureType, GL.TEXTURE_MAX_ANISOTROPY,
material.TextureLayers[i].AnisotropicFilter > 1 ? core::min_(MaxAnisotropy, material.TextureLayers[i].AnisotropicFilter) : 1);
layer.AnisotropicFilter > 1 ? core::min_(MaxAnisotropy, layer.AnisotropicFilter) : 1);
tmpTexture->getStatesCache().AnisotropicFilter = material.TextureLayers[i].AnisotropicFilter;
states.AnisotropicFilter = layer.AnisotropicFilter;
}
if (!tmpTexture->getStatesCache().IsCached || material.TextureLayers[i].TextureWrapU != tmpTexture->getStatesCache().WrapU) {
GL.TexParameteri(tmpTextureType, GL_TEXTURE_WRAP_S, getTextureWrapMode(material.TextureLayers[i].TextureWrapU));
tmpTexture->getStatesCache().WrapU = material.TextureLayers[i].TextureWrapU;
if (!states.IsCached || layer.TextureWrapU != states.WrapU) {
GL.TexParameteri(tmpTextureType, GL_TEXTURE_WRAP_S, getTextureWrapMode(layer.TextureWrapU));
states.WrapU = layer.TextureWrapU;
}
if (!tmpTexture->getStatesCache().IsCached || material.TextureLayers[i].TextureWrapV != tmpTexture->getStatesCache().WrapV) {
GL.TexParameteri(tmpTextureType, GL_TEXTURE_WRAP_T, getTextureWrapMode(material.TextureLayers[i].TextureWrapV));
tmpTexture->getStatesCache().WrapV = material.TextureLayers[i].TextureWrapV;
if (!states.IsCached || layer.TextureWrapV != states.WrapV) {
GL.TexParameteri(tmpTextureType, GL_TEXTURE_WRAP_T, getTextureWrapMode(layer.TextureWrapV));
states.WrapV = layer.TextureWrapV;
}
tmpTexture->getStatesCache().IsCached = true;
states.IsCached = true;
}
}