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This fixes potential problems with multi-context programs.
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Remove pipe_texture->first_level (always implicitly zero). This means there's
never any unused mipmap levels at the top.
In the state tracker, we no longer re-layout mipmapped textures if the
MinLod/MaxLod texture parameters change. It's up to the driver to obey the
pipe_sampler->min/max_lod clamps.
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This is used when we can't render to the surface type of the texture (such
as luminance/alpha).
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Manipulate the unpack params to skip the border. Gallium drivers won't support
texture borders.
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by state tracker
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they're not necessary anymore. we use the same paths
as sse and tgsi code
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introduce intermediate step gallivm_ir before compiling it
down to the final llvm ir.
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Use hardware rendering to compute/render mipmap levels.
The fallback path (which will be used for non-renderable texture formats)
isn't working yet.
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system of vertices
Also, export st_make_passthrough_vertex_shader() from st_cb_drawpixels.c
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Now, pass in a template object and return a new object.
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The state tracker will call pipe->get_paramf(PIPE_CAP_BITMAP_TEXCOORD_BIAS)
to get a bias factor for adjusting the texcoords used in bitmap/drawpixels.
This allows us to compensate for small differences in rasterization from
one device to another.
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