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swrast: anisotropic filtering extension

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Anisotropic filtering extension for swrast intended to be used by osmesa
to create high quality renderings.
Based on Higher Quality Elliptical Weighted Avarage Filter (EWA).
A 2nd implementation using footprint assembly is also provided.

Signed-off-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Andreas Faenger
2011-05-18 08:14:33 -06:00
committed by Brian Paul
parent 707eadcb7f
commit 8a98aabe0b
5 changed files with 416 additions and 0 deletions
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src/mesa/main/extensions.c
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@@ -503,6 +503,7 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
ctx->Extensions.EXT_texture_env_add = GL_TRUE;
ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
ctx->Extensions.EXT_texture_shared_exponent = GL_TRUE;