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- implement the blending modes for palette mode in softpoly

This commit is contained in:
Magnus Norddahl 2017-03-25 08:38:27 +01:00
parent c5805ddd6e
commit 04057b8b91
1 changed files with 109 additions and 20 deletions
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129
src/polyrenderer/drawers/poly_drawer8.h
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@ -127,7 +127,8 @@ public:
int lightshade = lightpos >> 8;
uint8_t bgcolor = dest[x * 8 + ix];
uint8_t fgcolor = Sample(varyingPos[0], varyingPos[1], texPixels, texWidth, texHeight, color, translation);
dest[x * 8 + ix] = ShadeAndBlend(fgcolor, bgcolor, lightshade, colormaps, srcalpha, destalpha);
uint32_t fgshade = SampleShade(varyingPos[0], varyingPos[1], texPixels, texWidth, texHeight);
dest[x * 8 + ix] = ShadeAndBlend(fgcolor, bgcolor, fgshade, lightshade, colormaps, srcalpha, destalpha);
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] += varyingStep[j];
lightpos += lightstep;
@ -191,7 +192,8 @@ public:
int lightshade = lightpos >> 8;
uint8_t bgcolor = dest[x];
uint8_t fgcolor = Sample(varyingPos[0], varyingPos[1], texPixels, texWidth, texHeight, color, translation);
dest[x] = ShadeAndBlend(fgcolor, bgcolor, lightshade, colormaps, srcalpha, destalpha);
uint32_t fgshade = SampleShade(varyingPos[0], varyingPos[1], texPixels, texWidth, texHeight);
dest[x] = ShadeAndBlend(fgcolor, bgcolor, fgshade, lightshade, colormaps, srcalpha, destalpha);
}
for (int j = 0; j < TriVertex::NumVarying; j++)
@ -244,7 +246,8 @@ public:
int lightshade = lightpos >> 8;
uint8_t bgcolor = dest[x];
uint8_t fgcolor = Sample(varyingPos[0], varyingPos[1], texPixels, texWidth, texHeight, color, translation);
dest[x] = ShadeAndBlend(fgcolor, bgcolor, lightshade, colormaps, srcalpha, destalpha);
uint32_t fgshade = SampleShade(varyingPos[0], varyingPos[1], texPixels, texWidth, texHeight);
dest[x] = ShadeAndBlend(fgcolor, bgcolor, fgshade, lightshade, colormaps, srcalpha, destalpha);
}
for (int j = 0; j < TriVertex::NumVarying; j++)
@ -288,7 +291,6 @@ private:
if (SamplerT::Mode == (int)Samplers::Skycap)
{
/*
int start_fade = 2; // How fast it should fade out
int alpha_top = clamp(v >> (16 - start_fade), 0, 256);
@ -296,19 +298,20 @@ private:
int a = MIN(alpha_top, alpha_bottom);
int inv_a = 256 - a;
uint32_t r = RPART(texel);
uint32_t g = GPART(texel);
uint32_t b = BPART(texel);
uint32_t fg_a = APART(texel);
uint32_t bg_red = RPART(color);
uint32_t bg_green = GPART(color);
uint32_t bg_blue = BPART(color);
r = (r * a + bg_red * inv_a + 127) >> 8;
g = (g * a + bg_green * inv_a + 127) >> 8;
b = (b * a + bg_blue * inv_a + 127) >> 8;
return MAKEARGB(fg_a, r, g, b);
*/
return texel;
if (a == 256)
return texel;
uint32_t texelrgb = GPalette.BaseColors[texel].d;
uint32_t r = RPART(texelrgb);
uint32_t g = GPART(texelrgb);
uint32_t b = BPART(texelrgb);
uint32_t capcolor_red = RPART(color);
uint32_t capcolor_green = GPART(color);
uint32_t capcolor_blue = BPART(color);
r = (r * a + capcolor_red * inv_a + 127) >> 8;
g = (g * a + capcolor_green * inv_a + 127) >> 8;
b = (b * a + capcolor_blue * inv_a + 127) >> 8;
return RGB256k.All[((r >> 2) << 12) | ((g >> 2) << 6) | (b >> 2)];
}
else
{
@ -316,12 +319,30 @@ private:
}
}
FORCEINLINE static uint8_t ShadeAndBlend(uint8_t fgcolor, uint8_t bgcolor, uint32_t lightshade, const uint8_t *colormaps, uint32_t srcalpha, uint32_t destalpha)
FORCEINLINE static unsigned int SampleShade(int32_t u, int32_t v, const uint8_t *texPixels, int texWidth, int texHeight)
{
using namespace TriScreenDrawerModes;
lightshade = ((256 - lightshade) * (NUMCOLORMAPS - 1) + (NUMCOLORMAPS - 1) / 2) / 256;
uint8_t shadedfg = colormaps[lightshade * 256 + fgcolor];
if (SamplerT::Mode == (int)Samplers::Shaded)
{
uint32_t texelX = ((((uint32_t)u << 8) >> 16) * texWidth) >> 16;
uint32_t texelY = ((((uint32_t)v << 8) >> 16) * texHeight) >> 16;
unsigned int sampleshadeout = texPixels[texelX * texHeight + texelY];
sampleshadeout += sampleshadeout >> 7; // 255 -> 256
return sampleshadeout;
}
else
{
return 0;
}
}
FORCEINLINE static uint8_t ShadeAndBlend(uint8_t fgcolor, uint8_t bgcolor, uint32_t fgshade, uint32_t lightshade, const uint8_t *colormaps, uint32_t srcalpha, uint32_t destalpha)
{
using namespace TriScreenDrawerModes;
lightshade = ((256 - lightshade) * NUMCOLORMAPS) & 0xffffff00;
uint8_t shadedfg = colormaps[lightshade + fgcolor];
if (BlendT::Mode == (int)BlendModes::Opaque)
{
@ -333,19 +354,87 @@ private:
}
else if (BlendT::Mode == (int)BlendModes::AddSrcColorOneMinusSrcColor)
{
int32_t fg_r = GPalette.BaseColors[shadedfg].r;
int32_t fg_g = GPalette.BaseColors[shadedfg].g;
int32_t fg_b = GPalette.BaseColors[shadedfg].b;
int32_t bg_r = GPalette.BaseColors[bgcolor].r;
int32_t bg_g = GPalette.BaseColors[bgcolor].g;
int32_t bg_b = GPalette.BaseColors[bgcolor].b;
int32_t inv_fg_r = 256 - (fg_r + (fg_r >> 7));
int32_t inv_fg_g = 256 - (fg_g + (fg_g >> 7));
int32_t inv_fg_b = 256 - (fg_b + (fg_b >> 7));
fg_r = MIN<int32_t>(fg_r + ((bg_r * inv_fg_r + 127) >> 8), 255);
fg_g = MIN<int32_t>(fg_g + ((bg_g * inv_fg_g + 127) >> 8), 255);
fg_b = MIN<int32_t>(fg_b + ((bg_b * inv_fg_b + 127) >> 8), 255);
shadedfg = RGB256k.All[((fg_r >> 2) << 12) | ((fg_g >> 2) << 6) | (fg_b >> 2)];
return (fgcolor != 0) ? shadedfg : bgcolor;
}
else if (BlendT::Mode == (int)BlendModes::Shaded)
{
uint32_t alpha = fgshade;
uint32_t inv_alpha = 256 - fgshade;
int32_t fg_r = GPalette.BaseColors[shadedfg].r;
int32_t fg_g = GPalette.BaseColors[shadedfg].g;
int32_t fg_b = GPalette.BaseColors[shadedfg].b;
int32_t bg_r = GPalette.BaseColors[bgcolor].r;
int32_t bg_g = GPalette.BaseColors[bgcolor].g;
int32_t bg_b = GPalette.BaseColors[bgcolor].b;
fg_r = (fg_r * alpha + bg_r * inv_alpha + 127) >> 8;
fg_g = (fg_g * alpha + bg_g * inv_alpha + 127) >> 8;
fg_b = (fg_b * alpha + bg_b * inv_alpha + 127) >> 8;
shadedfg = RGB256k.All[((fg_r >> 2) << 12) | ((fg_g >> 2) << 6) | (fg_b >> 2)];
return (alpha != 0) ? shadedfg : bgcolor;
}
else if (BlendT::Mode == (int)BlendModes::AddClampShaded)
{
uint32_t alpha = fgshade;
int32_t fg_r = GPalette.BaseColors[shadedfg].r;
int32_t fg_g = GPalette.BaseColors[shadedfg].g;
int32_t fg_b = GPalette.BaseColors[shadedfg].b;
int32_t bg_r = GPalette.BaseColors[bgcolor].r;
int32_t bg_g = GPalette.BaseColors[bgcolor].g;
int32_t bg_b = GPalette.BaseColors[bgcolor].b;
fg_r = MIN<int32_t>(bg_r + ((fg_r * alpha + 127) >> 8), 255);
fg_g = MIN<int32_t>(bg_g + ((fg_g * alpha + 127) >> 8), 255);
fg_b = MIN<int32_t>(bg_b + ((fg_b * alpha + 127) >> 8), 255);
shadedfg = RGB256k.All[((fg_r >> 2) << 12) | ((fg_g >> 2) << 6) | (fg_b >> 2)];
return (alpha != 0) ? shadedfg : bgcolor;
}
else
{
int32_t fg_r = GPalette.BaseColors[shadedfg].r;
int32_t fg_g = GPalette.BaseColors[shadedfg].g;
int32_t fg_b = GPalette.BaseColors[shadedfg].b;
int32_t bg_r = GPalette.BaseColors[bgcolor].r;
int32_t bg_g = GPalette.BaseColors[bgcolor].g;
int32_t bg_b = GPalette.BaseColors[bgcolor].b;
if (BlendT::Mode == (int)BlendModes::AddClamp)
{
fg_r = MIN<int32_t>((fg_r * srcalpha + bg_r * destalpha + 127) >> 8, 255);
fg_g = MIN<int32_t>((fg_g * srcalpha + bg_g * destalpha + 127) >> 8, 255);
fg_b = MIN<int32_t>((fg_b * srcalpha + bg_b * destalpha + 127) >> 8, 255);
}
else if (BlendT::Mode == (int)BlendModes::SubClamp)
{
fg_r = MAX<int32_t>((fg_r * srcalpha - bg_r * destalpha + 127) >> 8, 0);
fg_g = MAX<int32_t>((fg_g * srcalpha - bg_g * destalpha + 127) >> 8, 0);
fg_b = MAX<int32_t>((fg_b * srcalpha - bg_b * destalpha + 127) >> 8, 0);
}
else if (BlendT::Mode == (int)BlendModes::RevSubClamp)
{
fg_r = MAX<int32_t>((bg_r * srcalpha - fg_r * destalpha + 127) >> 8, 0);
fg_g = MAX<int32_t>((bg_g * srcalpha - fg_g * destalpha + 127) >> 8, 0);
fg_b = MAX<int32_t>((bg_b * srcalpha - fg_b * destalpha + 127) >> 8, 0);
}
shadedfg = RGB256k.All[((fg_r >> 2) << 12) | ((fg_g >> 2) << 6) | (fg_b >> 2)];
return (fgcolor != 0) ? shadedfg : bgcolor;
}
}