diff options
Diffstat (limited to 'drivers/pvr/PvrTcPacket.cpp')
| -rw-r--r-- | drivers/pvr/PvrTcPacket.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/drivers/pvr/PvrTcPacket.cpp b/drivers/pvr/PvrTcPacket.cpp new file mode 100644 index 0000000000..2e40d371e8 --- /dev/null +++ b/drivers/pvr/PvrTcPacket.cpp @@ -0,0 +1,209 @@ +//============================================================================ + +#include "PvrTcPacket.h" +#include "BitScale.h" + +//============================================================================ + +using namespace Javelin; + +//============================================================================ + +const unsigned char PvrTcPacket::BILINEAR_FACTORS[16][4] = +{ + { 4, 4, 4, 4 }, + { 2, 6, 2, 6 }, + { 8, 0, 8, 0 }, + { 6, 2, 6, 2 }, + + { 2, 2, 6, 6 }, + { 1, 3, 3, 9 }, + { 4, 0, 12, 0 }, + { 3, 1, 9, 3 }, + + { 8, 8, 0, 0 }, + { 4, 12, 0, 0 }, + { 16, 0, 0, 0 }, + { 12, 4, 0, 0 }, + + { 6, 6, 2, 2 }, + { 3, 9, 1, 3 }, + { 12, 0, 4, 0 }, + { 9, 3, 3, 1 }, +}; + +// Weights are { colorA, colorB, alphaA, alphaB } +const unsigned char PvrTcPacket::WEIGHTS[8][4] = +{ + // Weights for Mode=0 + { 8, 0, 8, 0 }, + { 5, 3, 5, 3 }, + { 3, 5, 3, 5 }, + { 0, 8, 0, 8 }, + + // Weights for Mode=1 + { 8, 0, 8, 0 }, + { 4, 4, 4, 4 }, + { 4, 4, 0, 0 }, + { 0, 8, 0, 8 }, +}; + +//============================================================================ + +ColorRgb<int> PvrTcPacket::GetColorRgbA() const +{ + if(colorAIsOpaque) + { + unsigned char r = colorA >> 9; + unsigned char g = colorA >> 4 & 0x1f; + unsigned char b = colorA & 0xf; + return ColorRgb<int>(Data::BITSCALE_5_TO_8[r], + Data::BITSCALE_5_TO_8[g], + Data::BITSCALE_4_TO_8[b]); + } + else + { + unsigned char r = (colorA >> 7) & 0xf; + unsigned char g = (colorA >> 3) & 0xf; + unsigned char b = colorA & 7; + return ColorRgb<int>(Data::BITSCALE_4_TO_8[r], + Data::BITSCALE_4_TO_8[g], + Data::BITSCALE_3_TO_8[b]); + } +} + +ColorRgb<int> PvrTcPacket::GetColorRgbB() const +{ + if(colorBIsOpaque) + { + unsigned char r = colorB >> 10; + unsigned char g = colorB >> 5 & 0x1f; + unsigned char b = colorB & 0x1f; + return ColorRgb<int>(Data::BITSCALE_5_TO_8[r], + Data::BITSCALE_5_TO_8[g], + Data::BITSCALE_5_TO_8[b]); + } + else + { + unsigned char r = colorB >> 8 & 0xf; + unsigned char g = colorB >> 4 & 0xf; + unsigned char b = colorB & 0xf; + return ColorRgb<int>(Data::BITSCALE_4_TO_8[r], + Data::BITSCALE_4_TO_8[g], + Data::BITSCALE_4_TO_8[b]); + } +} + +ColorRgba<int> PvrTcPacket::GetColorRgbaA() const +{ + if(colorAIsOpaque) + { + unsigned char r = colorA >> 9; + unsigned char g = colorA >> 4 & 0x1f; + unsigned char b = colorA & 0xf; + return ColorRgba<int>(Data::BITSCALE_5_TO_8[r], + Data::BITSCALE_5_TO_8[g], + Data::BITSCALE_4_TO_8[b], + 255); + } + else + { + unsigned char a = colorA >> 11 & 7; + unsigned char r = colorA >> 7 & 0xf; + unsigned char g = colorA >> 3 & 0xf; + unsigned char b = colorA & 7; + return ColorRgba<int>(Data::BITSCALE_4_TO_8[r], + Data::BITSCALE_4_TO_8[g], + Data::BITSCALE_3_TO_8[b], + Data::BITSCALE_3_TO_8[a]); + } +} + +ColorRgba<int> PvrTcPacket::GetColorRgbaB() const +{ + if(colorBIsOpaque) + { + unsigned char r = colorB >> 10; + unsigned char g = colorB >> 5 & 0x1f; + unsigned char b = colorB & 0x1f; + return ColorRgba<int>(Data::BITSCALE_5_TO_8[r], + Data::BITSCALE_5_TO_8[g], + Data::BITSCALE_5_TO_8[b], + 255); + } + else + { + unsigned char a = colorB >> 12 & 7; + unsigned char r = colorB >> 8 & 0xf; + unsigned char g = colorB >> 4 & 0xf; + unsigned char b = colorB & 0xf; + return ColorRgba<int>(Data::BITSCALE_4_TO_8[r], + Data::BITSCALE_4_TO_8[g], + Data::BITSCALE_4_TO_8[b], + Data::BITSCALE_3_TO_8[a]); + } +} + +//============================================================================ + +void PvrTcPacket::SetColorA(const ColorRgb<unsigned char>& c) +{ + int r = Data::BITSCALE_8_TO_5_FLOOR[c.r]; + int g = Data::BITSCALE_8_TO_5_FLOOR[c.g]; + int b = Data::BITSCALE_8_TO_4_FLOOR[c.b]; + colorA = r<<9 | g<<4 | b; + colorAIsOpaque = true; +} + +void PvrTcPacket::SetColorB(const ColorRgb<unsigned char>& c) +{ + int r = Data::BITSCALE_8_TO_5_CEIL[c.r]; + int g = Data::BITSCALE_8_TO_5_CEIL[c.g]; + int b = Data::BITSCALE_8_TO_5_CEIL[c.b]; + colorB = r<<10 | g<<5 | b; + colorBIsOpaque = true; +} + +void PvrTcPacket::SetColorA(const ColorRgba<unsigned char>& c) +{ + int a = Data::BITSCALE_8_TO_3_FLOOR[c.a]; + if(a == 7) + { + int r = Data::BITSCALE_8_TO_5_FLOOR[c.r]; + int g = Data::BITSCALE_8_TO_5_FLOOR[c.g]; + int b = Data::BITSCALE_8_TO_4_FLOOR[c.b]; + colorA = r<<9 | g<<4 | b; + colorAIsOpaque = true; + } + else + { + int r = Data::BITSCALE_8_TO_4_FLOOR[c.r]; + int g = Data::BITSCALE_8_TO_4_FLOOR[c.g]; + int b = Data::BITSCALE_8_TO_3_FLOOR[c.b]; + colorA = a<<11 | r<<7 | g<<3 | b; + colorAIsOpaque = false; + } +} + +void PvrTcPacket::SetColorB(const ColorRgba<unsigned char>& c) +{ + int a = Data::BITSCALE_8_TO_3_CEIL[c.a]; + if(a == 7) + { + int r = Data::BITSCALE_8_TO_5_CEIL[c.r]; + int g = Data::BITSCALE_8_TO_5_CEIL[c.g]; + int b = Data::BITSCALE_8_TO_5_CEIL[c.b]; + colorB = r<<10 | g<<5 | b; + colorBIsOpaque = true; + } + else + { + int r = Data::BITSCALE_8_TO_4_CEIL[c.r]; + int g = Data::BITSCALE_8_TO_4_CEIL[c.g]; + int b = Data::BITSCALE_8_TO_4_CEIL[c.b]; + colorB = a<<12 | r<<8 | g<<4 | b; + colorBIsOpaque = false; + } +} + +//============================================================================ |