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meta: Don't tweak BaseLevel when doing glGenerateMipmap().

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We don't need to worry about levels other than MaxLevel because we're
minifying -- the lower levels (higher detail) won't contribute to the
result.  By changing BaseLevel, we forced hardware that doesn't
support BaseLevel != 0 to relayout the texture object.
This commit is contained in:
Eric Anholt
2011-01-10 10:50:36 -08:00
parent 5b3eb7538c
commit bd4a2e9209
1 changed files with 1 additions and 4 deletions
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src/mesa/drivers/common/meta.c
+1 -4
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@@ -2260,7 +2260,6 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
const GLuint maxLevel = texObj->MaxLevel;
const GLenum minFilterSave = texObj->MinFilter;
const GLenum magFilterSave = texObj->MagFilter;
const GLint baseLevelSave = texObj->BaseLevel;
const GLint maxLevelSave = texObj->MaxLevel;
const GLboolean genMipmapSave = texObj->GenerateMipmap;
const GLenum wrapSSave = texObj->WrapS;
@@ -2496,8 +2495,7 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
}
}
/* limit sampling to src level */
_mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);
/* limit minification to src level */
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
/* Set to draw into the current dstLevel */
@@ -2549,7 +2547,6 @@ _mesa_meta_GenerateMipmap(struct gl_context *ctx, GLenum target,
_mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);
_mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);
_mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);
_mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
_mesa_TexParameteri(target, GL_GENERATE_MIPMAP, genMipmapSave);
_mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);