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authorIan Romanick <[email protected]>2013-05-08 10:48:55 -0700
committerIan Romanick <[email protected]>2013-05-13 12:05:19 -0700
commit065da16508731f6b6a98865f392509be4f9ce07f (patch)
treeada5c58c50ffa545874dc63a7b6c27c679c5d5b8 /m4
parent3acb21517b3a23cf1044531e96d9741bd1c122c3 (diff)
glsl: Convert lower_clip_distance_visitor to be an ir_rvalue_visitor
Right now the lower_clip_distance_visitor lowers variable indexing into gl_ClipDistance into variable indexing into both the array gl_ClipDistanceMESA and the vectors of that array. For example, gl_ClipDistance[i] = f; becomes gl_ClipDistanceMESA[i >> 2][i & 3] = f; However, variable indexing into vectors using ir_dereference_array is being removed. Instead, ir_expression with ir_triop_vector_insert will be used. The above code will become gl_ClipDistanceMESA[i >> 2] = vector_insert(gl_ClipDistanceMESA[i >> 2], i & 3, f); In order to do this, an ir_rvalue_visitor will need to be used. This commit is really just a refactor to get ready for that. v4: Split the least amount of refactor from the rest of the code changes. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Paul Berry <[email protected]>
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