elwrclandClaude Opus 5 9fbac1ee73 elk: vec4 arka ucunda fp64 float-controls emisyonunu tamamla
vec4_visitor::emit_shader_float_controls_execution_mode() yalnizca
ELK_SHADER_OPCODE_RND_MODE emit ediyordu; denorm modunu hic yazmiyordu.
SIMD arka ucu ikisini birden ELK_SHADER_OPCODE_FLOAT_CONTROL_MODE ile
yaziyor. Gen7'de VS/GS/TCS/TES vec4 kullandigi icin bu asamalarda fp64
denorm semantigi sessizce yanlisti.

Donanim yapabiliyor -- IVB PRM vol4 part3, CR0 bit 6 "Double Precision
Denorm Mode" ve bit 5:4 "Rounding Mode", elk'in ELK_CR0_* sabitleriyle
birebir ortusuyor. Eksik olan yalnizca emisyondu; elk_vec4_generator.cpp
da o opcode'u hic ele almiyordu.

elk_rnd_mode_from_nir() elk_fs_nir.cpp'den elk_nir.c'ye tasindi, iki arka
uc paylasiyor.

VK-GL-CTS, 8086:0166 (IVB GT2), 9402 fp64 vakasi:
  oncesi: 3943 Pass / 52 Fail
  sonrasi: 3975 Pass / 20 Fail
Gerileme yok: draw/vertex_input/tess/geom diliminde dusen 166 vaka
degisiklik geri alinarak tekrar kosuldu, hepsi ayni sekilde dusuyor.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-21 22:55:40 +03:00
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