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simpler GPU-compositing. will make it easier to grab neighbor 2D/3D pixels individually for filtering.

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This commit is contained in:
Arisotura
2019-05-25 19:36:47 +02:00
parent 8c93a45574
commit 70a3243714
6 changed files with 266 additions and 287 deletions
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142
src/libui_sdl/main_shaders.h
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@ -66,121 +66,81 @@ void main()
{
ivec4 pixel = ivec4(texelFetch(ScreenTex, ivec2(fTexcoord), 0));
// bit0-13: BLDCNT
// bit14-15: DISPCNT display mode
// bit16-20: EVA
// bit21-25: EVB
// bit26-30: EVY
ivec4 ctl = ivec4(texelFetch(ScreenTex, ivec2(256*3, int(fTexcoord.y)), 0));
ivec4 mbright = ivec4(texelFetch(ScreenTex, ivec2(256*3 + 1, int(fTexcoord.y)), 0));
int dispmode = (ctl.g >> 6) & 0x3;
ivec4 mbright = ivec4(texelFetch(ScreenTex, ivec2(256*3, int(fTexcoord.y)), 0));
int dispmode = mbright.b & 0x3;
if (dispmode == 1)
{
int eva = ctl.b & 0x1F;
int evb = (ctl.b >> 5) | ((ctl.a & 0x03) << 3);
int evy = ctl.a >> 2;
ivec4 val1 = pixel;
ivec4 val2 = ivec4(texelFetch(ScreenTex, ivec2(fTexcoord) + ivec2(256,0), 0));
ivec4 val3 = ivec4(texelFetch(ScreenTex, ivec2(fTexcoord) + ivec2(512,0), 0));
ivec4 top = pixel;
ivec4 mid = ivec4(texelFetch(ScreenTex, ivec2(fTexcoord) + ivec2(256,0), 0));
ivec4 bot = ivec4(texelFetch(ScreenTex, ivec2(fTexcoord) + ivec2(512,0), 0));
int compmode = val3.a & 0xF;
int eva, evb, evy;
int winmask = top.b >> 7;
if ((top.a & 0xC0) == 0x40)
if (compmode == 4)
{
float xpos = top.r + fract(fTexcoord.x);
float ypos = mod(fTexcoord.y, 768);
// 3D on top, blending
float xpos = val3.r + fract(fTexcoord.x);
float ypos = mod(fTexcoord.y, 192);
ivec4 _3dpix = ivec4(texelFetch(_3DTex, ivec2(vec2(xpos, ypos)*u3DScale), 0).bgra
* vec4(63,63,63,31));
if (_3dpix.a > 0) { top = _3dpix; top.a |= 0x40; bot = mid; }
else top = mid;
if (_3dpix.a > 0)
{
eva = (_3dpix.a & 0x1F) + 1;
evb = 32 - eva;
val1 = ((_3dpix * eva) + (val1 * evb)) >> 5;
if (eva <= 16) val1 += ivec4(1,1,1,0);
val1 = min(val1, 0x3F);
}
else
val1 = val2;
}
else if ((mid.a & 0xC0) == 0x40)
else if (compmode == 1)
{
float xpos = mid.r + fract(fTexcoord.x);
float ypos = mod(fTexcoord.y, 768);
// 3D on bottom, blending
float xpos = val3.r + fract(fTexcoord.x);
float ypos = mod(fTexcoord.y, 192);
ivec4 _3dpix = ivec4(texelFetch(_3DTex, ivec2(vec2(xpos, ypos)*u3DScale), 0).bgra
* vec4(63,63,63,31));
if (_3dpix.a > 0) { bot = _3dpix; bot.a |= 0x40; }
}
else
{
// conditional texture fetch no good for performance, apparently
//texelFetch(_3DTex, ivec2(0, fTexcoord.y*2), 0);
bot = mid;
}
top.b &= 0x3F;
bot.b &= 0x3F;
int target2;
if ((bot.a & 0x80) != 0) target2 = 0x10;
else if ((bot.a & 0x40) != 0) target2 = 0x01;
else target2 = bot.a;
bool t2pass = ((ctl.g & target2) != 0);
int coloreffect = 0;
if ((top.a & 0x80) != 0 && t2pass)
{
// sprite blending
coloreffect = 1;
if ((top.a & 0x40) != 0)
if (_3dpix.a > 0)
{
eva = top.a & 0x1F;
evb = 16 - eva;
eva = val3.g;
evb = val3.b;
val1 = ((val1 * eva) + (_3dpix * evb)) >> 4;
val1 = min(val1, 0x3F);
}
else
val1 = val2;
}
else if ((top.a & 0x40) != 0 && t2pass)
else if (compmode <= 3)
{
// 3D layer blending
// 3D on top, normal/fade
coloreffect = 4;
eva = (top.a & 0x1F) + 1;
evb = 32 - eva;
}
else
{
if ((top.a & 0x80) != 0) top.a = 0x10;
else if ((top.a & 0x40) != 0) top.a = 0x01;
float xpos = val3.r + fract(fTexcoord.x);
float ypos = mod(fTexcoord.y, 192);
ivec4 _3dpix = ivec4(texelFetch(_3DTex, ivec2(vec2(xpos, ypos)*u3DScale), 0).bgra
* vec4(63,63,63,31));
if ((ctl.r & top.a) != 0 && winmask != 0)
if (_3dpix.a > 0)
{
int effect = ctl.r >> 6;
if ((effect != 1) || t2pass) coloreffect = effect;
evy = val3.g;
val1 = _3dpix;
if (compmode == 2) val1 += ((ivec4(0x3F,0x3F,0x3F,0) - val1) * evy) >> 4;
else if (compmode == 3) val1 -= (val1 * evy) >> 4;
}
else
val1 = val2;
}
if (coloreffect == 0)
{
pixel = top;
}
else if (coloreffect == 1)
{
pixel = ((top * eva) + (bot * evb)) >> 4;
pixel = min(pixel, 0x3F);
}
else if (coloreffect == 2)
{
pixel = top;
pixel += ((ivec4(0x3F,0x3F,0x3F,0) - pixel) * evy) >> 4;
}
else if (coloreffect == 3)
{
pixel = top;
pixel -= (pixel * evy) >> 4;
}
else
{
pixel = ((top * eva) + (bot * evb)) >> 5;
if (eva <= 16) pixel += ivec4(1,1,1,0);
pixel = min(pixel, 0x3F);
}
pixel = val1;
}
if (dispmode != 0)