diff options
| author | Ian Romanick <[email protected]> | 2014-06-19 12:06:42 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2014-09-10 11:05:08 -0700 |
| commit | ec08b5e768271aa100be87c1ca6dd2b0109049d9 (patch) | |
| tree | b76c8e82a5c3fe2cc5180586b815a3bbcd218b18 /src/glsl/ir_optimization.h | |
| parent | 04d3323d4b7b7cae4954d80946f0ca202770dd14 (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]>
Diffstat (limited to 'src/glsl/ir_optimization.h')
| -rw-r--r-- | src/glsl/ir_optimization.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/glsl/ir_optimization.h b/src/glsl/ir_optimization.h index 1c6f72b544f..369dcd15b95 100644 --- a/src/glsl/ir_optimization.h +++ b/src/glsl/ir_optimization.h @@ -126,6 +126,8 @@ bool optimize_redundant_jumps(exec_list *instructions); bool optimize_split_arrays(exec_list *instructions, bool linked); bool lower_offset_arrays(exec_list *instructions); +bool lower_vertex_id(gl_shader *shader); + ir_rvalue * compare_index_block(exec_list *instructions, ir_variable *index, unsigned base, unsigned components, void *mem_ctx); |