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rgbvmx.cpp
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// license:BSD-3-Clause
// copyright-holders:Vas Crabb, Ryan Holtz
/***************************************************************************
rgbvmx.cpp
VMX/Altivec optimised RGB utilities.
***************************************************************************/
#include "emu.h"
#if defined(__ALTIVEC__)
#include "rgbutil.h"
/***************************************************************************
TABLES
***************************************************************************/
#ifdef __LITTLE_ENDIAN__
const rgbaint_t::VECU8 rgbaint_t::alpha_perm = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 28, 29, 30, 31 };
const rgbaint_t::VECU8 rgbaint_t::red_perm = { 0, 1, 2, 3, 4, 5, 6, 7, 28, 29, 30, 31, 12, 13, 14, 15 };
const rgbaint_t::VECU8 rgbaint_t::green_perm = { 0, 1, 2, 3, 28, 29, 30, 31, 8, 9, 10, 11, 12, 13, 14, 15 };
const rgbaint_t::VECU8 rgbaint_t::blue_perm = { 28, 29, 30, 31, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
#else
const rgbaint_t::VECU8 rgbaint_t::alpha_perm = { 16, 17, 18, 19, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
const rgbaint_t::VECU8 rgbaint_t::red_perm = { 0, 1, 2, 3, 16, 17, 18, 19, 8, 9, 10, 11, 12, 13, 14, 15 };
const rgbaint_t::VECU8 rgbaint_t::green_perm = { 0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 12, 13, 14, 15 };
const rgbaint_t::VECU8 rgbaint_t::blue_perm = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18, 19 };
#endif
const rgbaint_t::VECS16 rgbaint_t::scale_table[256] = {
{ 0, 256, 0, 256, 0, 256, 0, 256 }, { 1, 255, 1, 255, 1, 255, 1, 255 },
{ 2, 254, 2, 254, 2, 254, 2, 254 }, { 3, 253, 3, 253, 3, 253, 3, 253 },
{ 4, 252, 4, 252, 4, 252, 4, 252 }, { 5, 251, 5, 251, 5, 251, 5, 251 },
{ 6, 250, 6, 250, 6, 250, 6, 250 }, { 7, 249, 7, 249, 7, 249, 7, 249 },
{ 8, 248, 8, 248, 8, 248, 8, 248 }, { 9, 247, 9, 247, 9, 247, 9, 247 },
{ 10, 246, 10, 246, 10, 246, 10, 246 }, { 11, 245, 11, 245, 11, 245, 11, 245 },
{ 12, 244, 12, 244, 12, 244, 12, 244 }, { 13, 243, 13, 243, 13, 243, 13, 243 },
{ 14, 242, 14, 242, 14, 242, 14, 242 }, { 15, 241, 15, 241, 15, 241, 15, 241 },
{ 16, 240, 16, 240, 16, 240, 16, 240 }, { 17, 239, 17, 239, 17, 239, 17, 239 },
{ 18, 238, 18, 238, 18, 238, 18, 238 }, { 19, 237, 19, 237, 19, 237, 19, 237 },
{ 20, 236, 20, 236, 20, 236, 20, 236 }, { 21, 235, 21, 235, 21, 235, 21, 235 },
{ 22, 234, 22, 234, 22, 234, 22, 234 }, { 23, 233, 23, 233, 23, 233, 23, 233 },
{ 24, 232, 24, 232, 24, 232, 24, 232 }, { 25, 231, 25, 231, 25, 231, 25, 231 },
{ 26, 230, 26, 230, 26, 230, 26, 230 }, { 27, 229, 27, 229, 27, 229, 27, 229 },
{ 28, 228, 28, 228, 28, 228, 28, 228 }, { 29, 227, 29, 227, 29, 227, 29, 227 },
{ 30, 226, 30, 226, 30, 226, 30, 226 }, { 31, 225, 31, 225, 31, 225, 31, 225 },
{ 32, 224, 32, 224, 32, 224, 32, 224 }, { 33, 223, 33, 223, 33, 223, 33, 223 },
{ 34, 222, 34, 222, 34, 222, 34, 222 }, { 35, 221, 35, 221, 35, 221, 35, 221 },
{ 36, 220, 36, 220, 36, 220, 36, 220 }, { 37, 219, 37, 219, 37, 219, 37, 219 },
{ 38, 218, 38, 218, 38, 218, 38, 218 }, { 39, 217, 39, 217, 39, 217, 39, 217 },
{ 40, 216, 40, 216, 40, 216, 40, 216 }, { 41, 215, 41, 215, 41, 215, 41, 215 },
{ 42, 214, 42, 214, 42, 214, 42, 214 }, { 43, 213, 43, 213, 43, 213, 43, 213 },
{ 44, 212, 44, 212, 44, 212, 44, 212 }, { 45, 211, 45, 211, 45, 211, 45, 211 },
{ 46, 210, 46, 210, 46, 210, 46, 210 }, { 47, 209, 47, 209, 47, 209, 47, 209 },
{ 48, 208, 48, 208, 48, 208, 48, 208 }, { 49, 207, 49, 207, 49, 207, 49, 207 },
{ 50, 206, 50, 206, 50, 206, 50, 206 }, { 51, 205, 51, 205, 51, 205, 51, 205 },
{ 52, 204, 52, 204, 52, 204, 52, 204 }, { 53, 203, 53, 203, 53, 203, 53, 203 },
{ 54, 202, 54, 202, 54, 202, 54, 202 }, { 55, 201, 55, 201, 55, 201, 55, 201 },
{ 56, 200, 56, 200, 56, 200, 56, 200 }, { 57, 199, 57, 199, 57, 199, 57, 199 },
{ 58, 198, 58, 198, 58, 198, 58, 198 }, { 59, 197, 59, 197, 59, 197, 59, 197 },
{ 60, 196, 60, 196, 60, 196, 60, 196 }, { 61, 195, 61, 195, 61, 195, 61, 195 },
{ 62, 194, 62, 194, 62, 194, 62, 194 }, { 63, 193, 63, 193, 63, 193, 63, 193 },
{ 64, 192, 64, 192, 64, 192, 64, 192 }, { 65, 191, 65, 191, 65, 191, 65, 191 },
{ 66, 190, 66, 190, 66, 190, 66, 190 }, { 67, 189, 67, 189, 67, 189, 67, 189 },
{ 68, 188, 68, 188, 68, 188, 68, 188 }, { 69, 187, 69, 187, 69, 187, 69, 187 },
{ 70, 186, 70, 186, 70, 186, 70, 186 }, { 71, 185, 71, 185, 71, 185, 71, 185 },
{ 72, 184, 72, 184, 72, 184, 72, 184 }, { 73, 183, 73, 183, 73, 183, 73, 183 },
{ 74, 182, 74, 182, 74, 182, 74, 182 }, { 75, 181, 75, 181, 75, 181, 75, 181 },
{ 76, 180, 76, 180, 76, 180, 76, 180 }, { 77, 179, 77, 179, 77, 179, 77, 179 },
{ 78, 178, 78, 178, 78, 178, 78, 178 }, { 79, 177, 79, 177, 79, 177, 79, 177 },
{ 80, 176, 80, 176, 80, 176, 80, 176 }, { 81, 175, 81, 175, 81, 175, 81, 175 },
{ 82, 174, 82, 174, 82, 174, 82, 174 }, { 83, 173, 83, 173, 83, 173, 83, 173 },
{ 84, 172, 84, 172, 84, 172, 84, 172 }, { 85, 171, 85, 171, 85, 171, 85, 171 },
{ 86, 170, 86, 170, 86, 170, 86, 170 }, { 87, 169, 87, 169, 87, 169, 87, 169 },
{ 88, 168, 88, 168, 88, 168, 88, 168 }, { 89, 167, 89, 167, 89, 167, 89, 167 },
{ 90, 166, 90, 166, 90, 166, 90, 166 }, { 91, 165, 91, 165, 91, 165, 91, 165 },
{ 92, 164, 92, 164, 92, 164, 92, 164 }, { 93, 163, 93, 163, 93, 163, 93, 163 },
{ 94, 162, 94, 162, 94, 162, 94, 162 }, { 95, 161, 95, 161, 95, 161, 95, 161 },
{ 96, 160, 96, 160, 96, 160, 96, 160 }, { 97, 159, 97, 159, 97, 159, 97, 159 },
{ 98, 158, 98, 158, 98, 158, 98, 158 }, { 99, 157, 99, 157, 99, 157, 99, 157 },
{ 100, 156, 100, 156, 100, 156, 100, 156 }, { 101, 155, 101, 155, 101, 155, 101, 155 },
{ 102, 154, 102, 154, 102, 154, 102, 154 }, { 103, 153, 103, 153, 103, 153, 103, 153 },
{ 104, 152, 104, 152, 104, 152, 104, 152 }, { 105, 151, 105, 151, 105, 151, 105, 151 },
{ 106, 150, 106, 150, 106, 150, 106, 150 }, { 107, 149, 107, 149, 107, 149, 107, 149 },
{ 108, 148, 108, 148, 108, 148, 108, 148 }, { 109, 147, 109, 147, 109, 147, 109, 147 },
{ 110, 146, 110, 146, 110, 146, 110, 146 }, { 111, 145, 111, 145, 111, 145, 111, 145 },
{ 112, 144, 112, 144, 112, 144, 112, 144 }, { 113, 143, 113, 143, 113, 143, 113, 143 },
{ 114, 142, 114, 142, 114, 142, 114, 142 }, { 115, 141, 115, 141, 115, 141, 115, 141 },
{ 116, 140, 116, 140, 116, 140, 116, 140 }, { 117, 139, 117, 139, 117, 139, 117, 139 },
{ 118, 138, 118, 138, 118, 138, 118, 138 }, { 119, 137, 119, 137, 119, 137, 119, 137 },
{ 120, 136, 120, 136, 120, 136, 120, 136 }, { 121, 135, 121, 135, 121, 135, 121, 135 },
{ 122, 134, 122, 134, 122, 134, 122, 134 }, { 123, 133, 123, 133, 123, 133, 123, 133 },
{ 124, 132, 124, 132, 124, 132, 124, 132 }, { 125, 131, 125, 131, 125, 131, 125, 131 },
{ 126, 130, 126, 130, 126, 130, 126, 130 }, { 127, 129, 127, 129, 127, 129, 127, 129 },
{ 128, 128, 128, 128, 128, 128, 128, 128 }, { 129, 127, 129, 127, 129, 127, 129, 127 },
{ 130, 126, 130, 126, 130, 126, 130, 126 }, { 131, 125, 131, 125, 131, 125, 131, 125 },
{ 132, 124, 132, 124, 132, 124, 132, 124 }, { 133, 123, 133, 123, 133, 123, 133, 123 },
{ 134, 122, 134, 122, 134, 122, 134, 122 }, { 135, 121, 135, 121, 135, 121, 135, 121 },
{ 136, 120, 136, 120, 136, 120, 136, 120 }, { 137, 119, 137, 119, 137, 119, 137, 119 },
{ 138, 118, 138, 118, 138, 118, 138, 118 }, { 139, 117, 139, 117, 139, 117, 139, 117 },
{ 140, 116, 140, 116, 140, 116, 140, 116 }, { 141, 115, 141, 115, 141, 115, 141, 115 },
{ 142, 114, 142, 114, 142, 114, 142, 114 }, { 143, 113, 143, 113, 143, 113, 143, 113 },
{ 144, 112, 144, 112, 144, 112, 144, 112 }, { 145, 111, 145, 111, 145, 111, 145, 111 },
{ 146, 110, 146, 110, 146, 110, 146, 110 }, { 147, 109, 147, 109, 147, 109, 147, 109 },
{ 148, 108, 148, 108, 148, 108, 148, 108 }, { 149, 107, 149, 107, 149, 107, 149, 107 },
{ 150, 106, 150, 106, 150, 106, 150, 106 }, { 151, 105, 151, 105, 151, 105, 151, 105 },
{ 152, 104, 152, 104, 152, 104, 152, 104 }, { 153, 103, 153, 103, 153, 103, 153, 103 },
{ 154, 102, 154, 102, 154, 102, 154, 102 }, { 155, 101, 155, 101, 155, 101, 155, 101 },
{ 156, 100, 156, 100, 156, 100, 156, 100 }, { 157, 99, 157, 99, 157, 99, 157, 99 },
{ 158, 98, 158, 98, 158, 98, 158, 98 }, { 159, 97, 159, 97, 159, 97, 159, 97 },
{ 160, 96, 160, 96, 160, 96, 160, 96 }, { 161, 95, 161, 95, 161, 95, 161, 95 },
{ 162, 94, 162, 94, 162, 94, 162, 94 }, { 163, 93, 163, 93, 163, 93, 163, 93 },
{ 164, 92, 164, 92, 164, 92, 164, 92 }, { 165, 91, 165, 91, 165, 91, 165, 91 },
{ 166, 90, 166, 90, 166, 90, 166, 90 }, { 167, 89, 167, 89, 167, 89, 167, 89 },
{ 168, 88, 168, 88, 168, 88, 168, 88 }, { 169, 87, 169, 87, 169, 87, 169, 87 },
{ 170, 86, 170, 86, 170, 86, 170, 86 }, { 171, 85, 171, 85, 171, 85, 171, 85 },
{ 172, 84, 172, 84, 172, 84, 172, 84 }, { 173, 83, 173, 83, 173, 83, 173, 83 },
{ 174, 82, 174, 82, 174, 82, 174, 82 }, { 175, 81, 175, 81, 175, 81, 175, 81 },
{ 176, 80, 176, 80, 176, 80, 176, 80 }, { 177, 79, 177, 79, 177, 79, 177, 79 },
{ 178, 78, 178, 78, 178, 78, 178, 78 }, { 179, 77, 179, 77, 179, 77, 179, 77 },
{ 180, 76, 180, 76, 180, 76, 180, 76 }, { 181, 75, 181, 75, 181, 75, 181, 75 },
{ 182, 74, 182, 74, 182, 74, 182, 74 }, { 183, 73, 183, 73, 183, 73, 183, 73 },
{ 184, 72, 184, 72, 184, 72, 184, 72 }, { 185, 71, 185, 71, 185, 71, 185, 71 },
{ 186, 70, 186, 70, 186, 70, 186, 70 }, { 187, 69, 187, 69, 187, 69, 187, 69 },
{ 188, 68, 188, 68, 188, 68, 188, 68 }, { 189, 67, 189, 67, 189, 67, 189, 67 },
{ 190, 66, 190, 66, 190, 66, 190, 66 }, { 191, 65, 191, 65, 191, 65, 191, 65 },
{ 192, 64, 192, 64, 192, 64, 192, 64 }, { 193, 63, 193, 63, 193, 63, 193, 63 },
{ 194, 62, 194, 62, 194, 62, 194, 62 }, { 195, 61, 195, 61, 195, 61, 195, 61 },
{ 196, 60, 196, 60, 196, 60, 196, 60 }, { 197, 59, 197, 59, 197, 59, 197, 59 },
{ 198, 58, 198, 58, 198, 58, 198, 58 }, { 199, 57, 199, 57, 199, 57, 199, 57 },
{ 200, 56, 200, 56, 200, 56, 200, 56 }, { 201, 55, 201, 55, 201, 55, 201, 55 },
{ 202, 54, 202, 54, 202, 54, 202, 54 }, { 203, 53, 203, 53, 203, 53, 203, 53 },
{ 204, 52, 204, 52, 204, 52, 204, 52 }, { 205, 51, 205, 51, 205, 51, 205, 51 },
{ 206, 50, 206, 50, 206, 50, 206, 50 }, { 207, 49, 207, 49, 207, 49, 207, 49 },
{ 208, 48, 208, 48, 208, 48, 208, 48 }, { 209, 47, 209, 47, 209, 47, 209, 47 },
{ 210, 46, 210, 46, 210, 46, 210, 46 }, { 211, 45, 211, 45, 211, 45, 211, 45 },
{ 212, 44, 212, 44, 212, 44, 212, 44 }, { 213, 43, 213, 43, 213, 43, 213, 43 },
{ 214, 42, 214, 42, 214, 42, 214, 42 }, { 215, 41, 215, 41, 215, 41, 215, 41 },
{ 216, 40, 216, 40, 216, 40, 216, 40 }, { 217, 39, 217, 39, 217, 39, 217, 39 },
{ 218, 38, 218, 38, 218, 38, 218, 38 }, { 219, 37, 219, 37, 219, 37, 219, 37 },
{ 220, 36, 220, 36, 220, 36, 220, 36 }, { 221, 35, 221, 35, 221, 35, 221, 35 },
{ 222, 34, 222, 34, 222, 34, 222, 34 }, { 223, 33, 223, 33, 223, 33, 223, 33 },
{ 224, 32, 224, 32, 224, 32, 224, 32 }, { 225, 31, 225, 31, 225, 31, 225, 31 },
{ 226, 30, 226, 30, 226, 30, 226, 30 }, { 227, 29, 227, 29, 227, 29, 227, 29 },
{ 228, 28, 228, 28, 228, 28, 228, 28 }, { 229, 27, 229, 27, 229, 27, 229, 27 },
{ 230, 26, 230, 26, 230, 26, 230, 26 }, { 231, 25, 231, 25, 231, 25, 231, 25 },
{ 232, 24, 232, 24, 232, 24, 232, 24 }, { 233, 23, 233, 23, 233, 23, 233, 23 },
{ 234, 22, 234, 22, 234, 22, 234, 22 }, { 235, 21, 235, 21, 235, 21, 235, 21 },
{ 236, 20, 236, 20, 236, 20, 236, 20 }, { 237, 19, 237, 19, 237, 19, 237, 19 },
{ 238, 18, 238, 18, 238, 18, 238, 18 }, { 239, 17, 239, 17, 239, 17, 239, 17 },
{ 240, 16, 240, 16, 240, 16, 240, 16 }, { 241, 15, 241, 15, 241, 15, 241, 15 },
{ 242, 14, 242, 14, 242, 14, 242, 14 }, { 243, 13, 243, 13, 243, 13, 243, 13 },
{ 244, 12, 244, 12, 244, 12, 244, 12 }, { 245, 11, 245, 11, 245, 11, 245, 11 },
{ 246, 10, 246, 10, 246, 10, 246, 10 }, { 247, 9, 247, 9, 247, 9, 247, 9 },
{ 248, 8, 248, 8, 248, 8, 248, 8 }, { 249, 7, 249, 7, 249, 7, 249, 7 },
{ 250, 6, 250, 6, 250, 6, 250, 6 }, { 251, 5, 251, 5, 251, 5, 251, 5 },
{ 252, 4, 252, 4, 252, 4, 252, 4 }, { 253, 3, 253, 3, 253, 3, 253, 3 },
{ 254, 2, 254, 2, 254, 2, 254, 2 }, { 255, 1, 255, 1, 255, 1, 255, 1 }
};
/***************************************************************************
HIGHER LEVEL OPERATIONS
***************************************************************************/
void rgbaint_t::blend(const rgbaint_t& other, u8 factor)
{
const VECU32 shift = vec_splat_u32(-16);
const VECS32 scale1 = { factor, factor, factor, factor };
const VECS32 scale2 = { 0x100 - factor, 0x100 - factor, 0x100 - factor, 0x100 - factor, };
VECU32 temp = vec_msum(VECU16(m_value), VECU16(vec_rl(scale1, shift)), vec_splat_u32(0));
temp = vec_msum(VECU16(other.m_value), VECU16(vec_rl(scale2, shift)), temp);
#if defined __LITTLE_ENDIAN__
m_value = VECS32(vec_msum(VECU16(m_value), VECU16(scale1), vec_mule(VECU16(other.m_value), VECU16(scale2))));
#else
m_value = VECS32(vec_msum(VECU16(m_value), VECU16(scale1), vec_mulo(VECU16(other.m_value), VECU16(scale2))));
#endif
m_value = VECS32(vec_add(vec_sl(temp, shift), VECU32(m_value)));
sra_imm(8);
}
void rgbaint_t::scale_and_clamp(const rgbaint_t& scale)
{
mul(scale);
sra_imm(8);
clamp_to_uint8();
}
void rgbaint_t::scale_imm_and_clamp(const s32 scale)
{
mul_imm(scale);
sra_imm(8);
clamp_to_uint8();
}
#endif // defined(__ALTIVEC__)