gallium: remove the pipe_sampler_state::shadow_ambient field
This was only present for the sake of GL_ARB_shadow_ambient which we never implemented in Gallium. If we someday want GL_ARB_shadow_ambient we can implement it in the state tracker by adding a MAD after the relevant TEX instructions.
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@ -430,7 +430,6 @@ void trace_dump_sampler_state(const struct pipe_sampler_state *state)
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trace_dump_member(uint, state, compare_func);
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trace_dump_member(bool, state, normalized_coords);
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trace_dump_member(uint, state, prefilter);
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trace_dump_member(float, state, shadow_ambient);
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trace_dump_member(float, state, lod_bias);
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trace_dump_member(float, state, min_lod);
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trace_dump_member(float, state, max_lod);
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@ -265,7 +265,6 @@ struct pipe_sampler_state
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unsigned compare_func:3; /**< PIPE_FUNC_x */
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unsigned normalized_coords:1; /**< Are coords normalized to [0,1]? */
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unsigned prefilter:4; /**< Wierd sampling state exposed by some api's */
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float shadow_ambient; /**< shadow test fail color/intensity */
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float lod_bias; /**< LOD/lambda bias */
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float min_lod, max_lod; /**< LOD clamp range, after bias */
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float border_color[4];
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@ -669,7 +669,6 @@ static int vlInit
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sampler.compare_func = PIPE_FUNC_ALWAYS;
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sampler.normalized_coords = 1;
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/*sampler.prefilter = ;*/
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/*sampler.shadow_ambient = ;*/
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/*sampler.lod_bias = ;*/
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/*sampler.min_lod = ;*/
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/*sampler.max_lod = ;*/
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@ -1074,7 +1074,6 @@ static int vlInit
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sampler.compare_func = PIPE_FUNC_ALWAYS;
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sampler.normalized_coords = 1;
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/*sampler.prefilter = ;*/
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/*sampler.shadow_ambient = ;*/
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/*sampler.lod_bias = ;*/
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sampler.min_lod = 0;
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/*sampler.max_lod = ;*/
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