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rsx: Implement proper decoding for some obscure fragment instructions

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PK4UBG and UP4UBG were dropped from the NV_fragment_program spec in 2002.
Not much information about them remains but seems pretty straightforward.
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kd-11 2021-06-05 02:40:39 +03:00 • committed by kd-11
parent 11ab9b7fa9
commit 39815801aa
6 changed files with 47 additions and 8 deletions
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rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp
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@ -207,6 +207,8 @@ void GLFragmentDecompilerThread::insertGlobalFunctions(std::stringstream &OS)
m_shader_props.require_texture_ops = properties.has_tex_op;
m_shader_props.require_shadow_ops = properties.shadow_sampler_mask != 0;
m_shader_props.require_texture_expand = properties.has_exp_tex_op;
m_shader_props.require_srgb_to_linear = properties.has_upg;
m_shader_props.require_linear_to_srgb = properties.has_pkg;
m_shader_props.emulate_coverage_tests = true; // g_cfg.video.antialiasing_level == msaa_level::none;
m_shader_props.emulate_shadow_compare = device_props.emulate_depth_compare;
m_shader_props.low_precision_tests = ::gl::get_driver_caps().vendor_NVIDIA;