fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-26 20:50:23 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

gallivm: avoid division by zero when computing cube face

Browse source 
this is illegal and produces NaNs which blow up the sample instr

cc: mesa-stable

fixes (llvmpipe and zink):
KHR-GL45.incomplete_texture_access.sampler
dEQP-GLES31.functional.program_uniform.by_pointer.render.array_in_struct.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_pointer.render.array_in_struct.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_pointer.render.array_in_struct.sampler2D_samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_pointer.render.basic.samplerCube_both
dEQP-GLES31.functional.program_uniform.by_pointer.render.basic.samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_pointer.render.basic.samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_pointer.render.basic_struct.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_pointer.render.basic_struct.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_pointer.render.nested_structs_arrays.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_pointer.render.nested_structs_arrays.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_pointer.render.nested_structs_arrays.sampler2D_samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_pointer.render.struct_in_array.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_pointer.render.struct_in_array.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_pointer.render.struct_in_array.sampler2D_samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_value.render.array_in_struct.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_value.render.array_in_struct.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_value.render.array_in_struct.sampler2D_samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_value.render.basic.samplerCube_both
dEQP-GLES31.functional.program_uniform.by_value.render.basic.samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_value.render.basic.samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_value.render.basic_struct.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_value.render.basic_struct.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_value.render.nested_structs_arrays.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_value.render.nested_structs_arrays.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_value.render.nested_structs_arrays.sampler2D_samplerCube_vertex
dEQP-GLES31.functional.program_uniform.by_value.render.struct_in_array.sampler2D_samplerCube_both
dEQP-GLES31.functional.program_uniform.by_value.render.struct_in_array.sampler2D_samplerCube_fragment
dEQP-GLES31.functional.program_uniform.by_value.render.struct_in_array.sampler2D_samplerCube_vertex

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15246>
(cherry picked from commit c82dcdf598)
This commit is contained in:
Mike Blumenkrantz 2022-03-04 10:59:12 -05:00 • committed by Dylan Baker
parent 085a5d96e5
commit e86cc99649
2 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
.pick_status.json
View file

@ -544,7 +544,7 @@
"description": "gallivm: avoid division by zero when computing cube face",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null
},

5
src/gallium/auxiliary/gallivm/lp_bld_sample.c
View file

@ -1726,7 +1726,10 @@ lp_build_cube_imapos(struct lp_build_context *coord_bld, LLVMValueRef coord)
/* ima = +0.5 / abs(coord); */
LLVMValueRef posHalf = lp_build_const_vec(coord_bld->gallivm, coord_bld->type, 0.5);
LLVMValueRef absCoord = lp_build_abs(coord_bld, coord);
LLVMValueRef ima = lp_build_div(coord_bld, posHalf, absCoord);
/* avoid div by zero */
LLVMValueRef sel = lp_build_cmp(coord_bld, PIPE_FUNC_GREATER, absCoord, coord_bld->zero);
LLVMValueRef div = lp_build_div(coord_bld, posHalf, absCoord);
LLVMValueRef ima = lp_build_select(coord_bld, sel, div, coord_bld->zero);
return ima;
}