diff options
Diffstat (limited to 'src/video_core/swrasterizer/lighting.cpp')
| -rw-r--r-- | src/video_core/swrasterizer/lighting.cpp | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/src/video_core/swrasterizer/lighting.cpp b/src/video_core/swrasterizer/lighting.cpp index d61e6d572..39a3e396d 100644 --- a/src/video_core/swrasterizer/lighting.cpp +++ b/src/video_core/swrasterizer/lighting.cpp @@ -55,6 +55,9 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors( light_vector.Normalize(); + Math::Vec3<float> norm_view = view.Normalized(); + Math::Vec3<float> half_vector = norm_view + light_vector; + float dist_atten = 1.0f; if (!lighting.IsDistAttenDisabled(num)) { auto distance = (-view - position).Length(); @@ -74,17 +77,15 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors( auto GetLutValue = [&](LightingRegs::LightingLutInput input, bool abs, LightingRegs::LightingScale scale_enum, LightingRegs::LightingSampler sampler) { - Math::Vec3<float> norm_view = view.Normalized(); - Math::Vec3<float> half_angle = (norm_view + light_vector).Normalized(); float result = 0.0f; switch (input) { case LightingRegs::LightingLutInput::NH: - result = Math::Dot(normal, half_angle); + result = Math::Dot(normal, half_vector.Normalized()); break; case LightingRegs::LightingLutInput::VH: - result = Math::Dot(norm_view, half_angle); + result = Math::Dot(norm_view, half_vector.Normalized()); break; case LightingRegs::LightingLutInput::NV: @@ -95,6 +96,12 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors( result = Math::Dot(light_vector, normal); break; + case LightingRegs::LightingLutInput::SP: { + Math::Vec3<s32> spot_dir{light_config.spot_x.Value(), light_config.spot_y.Value(), + light_config.spot_z.Value()}; + result = Math::Dot(light_vector, spot_dir.Cast<float>() / 2047.0f); + break; + } default: LOG_CRITICAL(HW_GPU, "Unknown lighting LUT input %u\n", static_cast<u32>(input)); UNIMPLEMENTED(); @@ -125,6 +132,16 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors( LookupLightingLut(lighting_state, static_cast<size_t>(sampler), index, delta); }; + // If enabled, compute spot light attenuation value + float spot_atten = 1.0f; + if (!lighting.IsSpotAttenDisabled(num) && + LightingRegs::IsLightingSamplerSupported( + lighting.config0.config, LightingRegs::LightingSampler::SpotlightAttenuation)) { + auto lut = LightingRegs::SpotlightAttenuationSampler(num); + spot_atten = GetLutValue(lighting.lut_input.sp, lighting.abs_lut_input.disable_sp == 0, + lighting.lut_scale.sp, lut); + } + // Specular 0 component float d0_lut_value = 1.0f; if (lighting.config1.disable_lut_d0 == 0 && @@ -224,12 +241,23 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors( else dot_product = std::max(dot_product, 0.0f); + if (light_config.config.geometric_factor_0 || light_config.config.geometric_factor_1) { + float geo_factor = half_vector.Length2(); + geo_factor = geo_factor == 0.0f ? 0.0f : std::min(dot_product / geo_factor, 1.0f); + if (light_config.config.geometric_factor_0) { + specular_0 *= geo_factor; + } + if (light_config.config.geometric_factor_1) { + specular_1 *= geo_factor; + } + } + auto diffuse = light_config.diffuse.ToVec3f() * dot_product + light_config.ambient.ToVec3f(); - diffuse_sum += Math::MakeVec(diffuse * dist_atten, 0.0f); + diffuse_sum += Math::MakeVec(diffuse * dist_atten * spot_atten, 0.0f); - specular_sum += - Math::MakeVec((specular_0 + specular_1) * clamp_highlights * dist_atten, 0.0f); + specular_sum += Math::MakeVec( + (specular_0 + specular_1) * clamp_highlights * dist_atten * spot_atten, 0.0f); } diffuse_sum += Math::MakeVec(lighting.global_ambient.ToVec3f(), 0.0f); |