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pica: prepare registers for spotlight

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This commit is contained in:
wwylele 2017-05-24 19:25:37 +03:00
parent bae3799bd5
commit b5addf8fb8
1 changed files with 43 additions and 20 deletions
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63
src/video_core/regs_lighting.h
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@ -26,6 +26,16 @@ struct LightingRegs {
DistanceAttenuation = 16,
};
static LightingSampler SpotlightAttenuationSampler(unsigned index) {
return static_cast<LightingSampler>(
static_cast<unsigned>(LightingSampler::SpotlightAttenuation) + index);
}
static LightingSampler DistanceAttenuationSampler(unsigned index) {
return static_cast<LightingSampler>(
static_cast<unsigned>(LightingSampler::DistanceAttenuation) + index);
}
/**
* Pica fragment lighting supports using different LUTs for each lighting component: Reflectance
* R, G, and B channels, distribution function for specular components 0 and 1, fresnel factor,
@ -73,6 +83,8 @@ struct LightingRegs {
VH = 1, // Cosine of the angle between the view and half-angle vectors
NV = 2, // Cosine of the angle between the normal and the view vector
LN = 3, // Cosine of the angle between the light and the normal vectors
SP = 4, // Cosine of the angle between the light and the inverse spotlight vectors
CP = 5, // TODO: document and implement
};
enum class LightingBumpMode : u32 {
@ -104,6 +116,9 @@ struct LightingRegs {
return (config != LightingConfig::Config0) && (config != LightingConfig::Config1) &&
(config != LightingConfig::Config5);
case LightingSampler::SpotlightAttenuation:
return (config != LightingConfig::Config2) && (config != LightingConfig::Config3);
case LightingSampler::Fresnel:
return (config != LightingConfig::Config0) && (config != LightingConfig::Config2) &&
(config != LightingConfig::Config4);
@ -116,11 +131,10 @@ struct LightingRegs {
return (config == LightingConfig::Config4) || (config == LightingConfig::Config5) ||
(config == LightingConfig::Config7);
default:
UNREACHABLE_MSG("Regs::IsLightingSamplerSupported: Reached "
"unreachable section, sampler should be one "
"of Distribution0, Distribution1, Fresnel, "
"ReflectRed, ReflectGreen or ReflectBlue, instead "
"got %i",
UNREACHABLE_MSG("Regs::IsLightingSamplerSupported: Reached unreachable section, "
"sampler should be one of Distribution0, Distribution1, "
"SpotlightAttenuation, Fresnel, ReflectRed, ReflectGreen or "
"ReflectBlue, instead got %i",
static_cast<int>(config));
}
}
@ -140,7 +154,16 @@ struct LightingRegs {
BitField<0, 16, u32> z;
};
INSERT_PADDING_WORDS(0x3);
// inverse spotlight direction vector, encoded as fixed1.1.11
union {
BitField<0, 13, s32> spot_x;
BitField<16, 13, s32> spot_y;
};
union {
BitField<0, 13, s32> spot_z;
};
INSERT_PADDING_WORDS(0x1);
union {
BitField<0, 1, u32> directional;
@ -169,8 +192,16 @@ struct LightingRegs {
} config0;
union {
u32 raw;
// Each bit specifies whether spot light attenuation should be applied for the corresponding
// light.
BitField<8, 8, u32> disable_spot_atten;
BitField<16, 1, u32> disable_lut_d0;
BitField<17, 1, u32> disable_lut_d1;
// Note: by intuition, BitField<18, 1, u32> should be disable_lut_sp, but it is actually a
// dummy bit which is always set as 1.
BitField<19, 1, u32> disable_lut_fr;
BitField<20, 1, u32> disable_lut_rr;
BitField<21, 1, u32> disable_lut_rg;
@ -178,23 +209,15 @@ struct LightingRegs {
// Each bit specifies whether distance attenuation should be applied for the corresponding
// light.
BitField<24, 1, u32> disable_dist_atten_light_0;
BitField<25, 1, u32> disable_dist_atten_light_1;
BitField<26, 1, u32> disable_dist_atten_light_2;
BitField<27, 1, u32> disable_dist_atten_light_3;
BitField<28, 1, u32> disable_dist_atten_light_4;
BitField<29, 1, u32> disable_dist_atten_light_5;
BitField<30, 1, u32> disable_dist_atten_light_6;
BitField<31, 1, u32> disable_dist_atten_light_7;
BitField<24, 8, u32> disable_dist_atten;
} config1;
bool IsDistAttenDisabled(unsigned index) const {
const unsigned disable[] = {
config1.disable_dist_atten_light_0, config1.disable_dist_atten_light_1,
config1.disable_dist_atten_light_2, config1.disable_dist_atten_light_3,
config1.disable_dist_atten_light_4, config1.disable_dist_atten_light_5,
config1.disable_dist_atten_light_6, config1.disable_dist_atten_light_7};
return disable[index] != 0;
return (config1.disable_dist_atten & (1 << index)) != 0;
}
bool IsSpotAttenDisabled(unsigned index) const {
return (config1.disable_spot_atten & (1 << index)) != 0;
}
union {