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authorIan Romanick <[email protected]>2014-06-19 12:06:42 -0700
committerKenneth Graunke <[email protected]>2014-09-10 11:05:08 -0700
commitec08b5e768271aa100be87c1ca6dd2b0109049d9 (patch)
treeb76c8e82a5c3fe2cc5180586b815a3bbcd218b18 /docs/download.html
parent04d3323d4b7b7cae4954d80946f0ca202770dd14 (diff)
glsl: Add a lowering pass for gl_VertexID
Converts gl_VertexID to (gl_VertexIDMESA + gl_BaseVertex). gl_VertexIDMESA is backed by SYSTEM_VALUE_VERTEX_ID_ZERO_BASE, and gl_BaseVertex is backed by SYSTEM_VALUE_BASE_VERTEX. v2: Put the enum in struct gl_constants and propoerly resolve the scope in C++ code. Fix suggested by Marek. v3: Reabase on Matt's foreach_in_list changes (was using foreach_list). v4 (Ken): Use a systemvalue instead of a uniform because STATE_BASE_VERTEX has been removed. v5: Use a boolean to select lowering, and only allow one lowering method. Suggested by Ken. v6 (Ken): Replace strcmp against literal "gl_BaseVertex"/"gl_VertexID" with SYSTEM_VALUE enum checks, for efficiency. v7: Rebase on context constant initialization work. Signed-off-by: Ian Romanick <[email protected]> Signed-off-by: Kenneth Graunke <[email protected]>
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