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Diffstat (limited to 'src/GPU3D_OpenGL_shaders.h')
| -rw-r--r-- | src/GPU3D_OpenGL_shaders.h | 602 |
1 files changed, 602 insertions, 0 deletions
diff --git a/src/GPU3D_OpenGL_shaders.h b/src/GPU3D_OpenGL_shaders.h new file mode 100644 index 0000000..e436544 --- /dev/null +++ b/src/GPU3D_OpenGL_shaders.h @@ -0,0 +1,602 @@ +/* + Copyright 2016-2019 Arisotura + + This file is part of melonDS. + + melonDS is free software: you can redistribute it and/or modify it under + the terms of the GNU General Public License as published by the Free + Software Foundation, either version 3 of the License, or (at your option) + any later version. + + melonDS is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with melonDS. If not, see http://www.gnu.org/licenses/. +*/ + +#ifndef GPU3D_OPENGL_SHADERS_H +#define GPU3D_OPENGL_SHADERS_H + +#define kShaderHeader "#version 140" + + +const char* kClearVS = kShaderHeader R"( + +in vec2 vPosition; + +uniform uint uDepth; + +void main() +{ + float fdepth = (float(uDepth) / 8388608.0) - 1.0; + gl_Position = vec4(vPosition, fdepth, 1.0); +} +)"; + +const char* kClearFS = kShaderHeader R"( + +uniform uvec4 uColor; +uniform uint uOpaquePolyID; +uniform uint uFogFlag; + +out vec4 oColor; +out uvec3 oAttr; + +void main() +{ + oColor = vec4(uColor).bgra / 31.0; + oAttr.r = uint(0); + oAttr.g = uOpaquePolyID; + oAttr.b = uint(0); +} +)"; + + +const char* kRenderVSCommon = R"( + +layout(std140) uniform uConfig +{ + vec2 uScreenSize; + int uDispCnt; + vec4 uToonColors[32]; +}; + +in uvec4 vPosition; +in uvec4 vColor; +in ivec2 vTexcoord; +in ivec3 vPolygonAttr; + +smooth out vec4 fColor; +smooth out vec2 fTexcoord; +flat out ivec3 fPolygonAttr; +)"; + +const char* kRenderFSCommon = R"( + +uniform usampler2D TexMem; +uniform sampler2D TexPalMem; + +layout(std140) uniform uConfig +{ + vec2 uScreenSize; + int uDispCnt; + vec4 uToonColors[32]; +}; + +smooth in vec4 fColor; +smooth in vec2 fTexcoord; +flat in ivec3 fPolygonAttr; + +out vec4 oColor; +out uvec3 oAttr; + +int TexcoordWrap(int c, int maxc, int mode) +{ + if ((mode & (1<<0)) != 0) + { + if ((mode & (1<<2)) != 0 && (c & maxc) != 0) + return (maxc-1) - (c & (maxc-1)); + else + return (c & (maxc-1)); + } + else + return clamp(c, 0, maxc-1); +} + +vec4 TextureFetch_A3I5(ivec2 addr, ivec4 st, int wrapmode) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y * st.z) + st.x); + ivec4 pixel = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + + pixel.a = (pixel.r & 0xE0); + pixel.a = (pixel.a >> 3) + (pixel.a >> 6); + pixel.r &= 0x1F; + + addr.y = (addr.y << 3) + pixel.r; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + + return vec4(color.rgb, float(pixel.a)/31.0); +} + +vec4 TextureFetch_I2(ivec2 addr, ivec4 st, int wrapmode, float alpha0) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y * st.z) + st.x) >> 2; + ivec4 pixel = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + pixel.r >>= (2 * (st.x & 3)); + pixel.r &= 0x03; + + addr.y = (addr.y << 2) + pixel.r; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + + return vec4(color.rgb, (pixel.r>0)?1:alpha0); +} + +vec4 TextureFetch_I4(ivec2 addr, ivec4 st, int wrapmode, float alpha0) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y * st.z) + st.x) >> 1; + ivec4 pixel = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + if ((st.x & 1) != 0) pixel.r >>= 4; + else pixel.r &= 0x0F; + + addr.y = (addr.y << 3) + pixel.r; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + + return vec4(color.rgb, (pixel.r>0)?1:alpha0); +} + +vec4 TextureFetch_I8(ivec2 addr, ivec4 st, int wrapmode, float alpha0) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y * st.z) + st.x); + ivec4 pixel = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + + addr.y = (addr.y << 3) + pixel.r; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + + return vec4(color.rgb, (pixel.r>0)?1:alpha0); +} + +vec4 TextureFetch_Compressed(ivec2 addr, ivec4 st, int wrapmode) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y & 0x3FC) * (st.z>>2)) + (st.x & 0x3FC) + (st.y & 0x3); + ivec4 p = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + int val = (p.r >> (2 * (st.x & 0x3))) & 0x3; + + int slot1addr = 0x20000 + ((addr.x & 0x1FFFC) >> 1); + if (addr.x >= 0x40000) slot1addr += 0x10000; + + int palinfo; + p = ivec4(texelFetch(TexMem, ivec2(slot1addr&0x3FF, slot1addr>>10), 0)); + palinfo = p.r; + slot1addr++; + p = ivec4(texelFetch(TexMem, ivec2(slot1addr&0x3FF, slot1addr>>10), 0)); + palinfo |= (p.r << 8); + + addr.y = (addr.y << 3) + ((palinfo & 0x3FFF) << 1); + palinfo >>= 14; + + if (val == 0) + { + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4(color.rgb, 1.0); + } + else if (val == 1) + { + addr.y++; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4(color.rgb, 1.0); + } + else if (val == 2) + { + if (palinfo == 1) + { + vec4 color0 = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + addr.y++; + vec4 color1 = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4((color0.rgb + color1.rgb) / 2.0, 1.0); + } + else if (palinfo == 3) + { + vec4 color0 = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + addr.y++; + vec4 color1 = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4((color0.rgb*5.0 + color1.rgb*3.0) / 8.0, 1.0); + } + else + { + addr.y += 2; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4(color.rgb, 1.0); + } + } + else + { + if (palinfo == 2) + { + addr.y += 3; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4(color.rgb, 1.0); + } + else if (palinfo == 3) + { + vec4 color0 = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + addr.y++; + vec4 color1 = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + return vec4((color0.rgb*3.0 + color1.rgb*5.0) / 8.0, 1.0); + } + else + { + return vec4(0.0); + } + } +} + +vec4 TextureFetch_A5I3(ivec2 addr, ivec4 st, int wrapmode) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y * st.z) + st.x); + ivec4 pixel = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + + pixel.a = (pixel.r & 0xF8) >> 3; + pixel.r &= 0x07; + + addr.y = (addr.y << 3) + pixel.r; + vec4 color = texelFetch(TexPalMem, ivec2(addr.y&0x3FF, addr.y>>10), 0); + + return vec4(color.rgb, float(pixel.a)/31.0); +} + +vec4 TextureFetch_Direct(ivec2 addr, ivec4 st, int wrapmode) +{ + st.x = TexcoordWrap(st.x, st.z, wrapmode>>0); + st.y = TexcoordWrap(st.y, st.w, wrapmode>>1); + + addr.x += ((st.y * st.z) + st.x) << 1; + ivec4 pixelL = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + addr.x++; + ivec4 pixelH = ivec4(texelFetch(TexMem, ivec2(addr.x&0x3FF, addr.x>>10), 0)); + + vec4 color; + color.r = float(pixelL.r & 0x1F) / 31.0; + color.g = float((pixelL.r >> 5) | ((pixelH.r & 0x03) << 3)) / 31.0; + color.b = float((pixelH.r & 0x7C) >> 2) / 31.0; + color.a = float(pixelH.r >> 7); + + return color; +} + +vec4 TextureLookup_Nearest(vec2 st) +{ + int attr = int(fPolygonAttr.y); + int paladdr = int(fPolygonAttr.z); + + float alpha0; + if ((attr & (1<<29)) != 0) alpha0 = 0.0; + else alpha0 = 1.0; + + int tw = 8 << ((attr >> 20) & 0x7); + int th = 8 << ((attr >> 23) & 0x7); + ivec4 st_full = ivec4(ivec2(st), tw, th); + + ivec2 vramaddr = ivec2((attr & 0xFFFF) << 3, paladdr); + int wrapmode = (attr >> 16); + + int type = (attr >> 26) & 0x7; + if (type == 5) return TextureFetch_Compressed(vramaddr, st_full, wrapmode); + else if (type == 2) return TextureFetch_I2 (vramaddr, st_full, wrapmode, alpha0); + else if (type == 3) return TextureFetch_I4 (vramaddr, st_full, wrapmode, alpha0); + else if (type == 4) return TextureFetch_I8 (vramaddr, st_full, wrapmode, alpha0); + else if (type == 1) return TextureFetch_A3I5 (vramaddr, st_full, wrapmode); + else if (type == 6) return TextureFetch_A5I3 (vramaddr, st_full, wrapmode); + else return TextureFetch_Direct (vramaddr, st_full, wrapmode); +} + +vec4 TextureLookup_Linear(vec2 texcoord) +{ + ivec2 intpart = ivec2(texcoord); + vec2 fracpart = fract(texcoord); + + int attr = int(fPolygonAttr.y); + int paladdr = int(fPolygonAttr.z); + + float alpha0; + if ((attr & (1<<29)) != 0) alpha0 = 0.0; + else alpha0 = 1.0; + + int tw = 8 << ((attr >> 20) & 0x7); + int th = 8 << ((attr >> 23) & 0x7); + ivec4 st_full = ivec4(intpart, tw, th); + + ivec2 vramaddr = ivec2((attr & 0xFFFF) << 3, paladdr); + int wrapmode = (attr >> 16); + + vec4 A, B, C, D; + int type = (attr >> 26) & 0x7; + if (type == 5) + { + A = TextureFetch_Compressed(vramaddr, st_full , wrapmode); + B = TextureFetch_Compressed(vramaddr, st_full + ivec4(1,0,0,0), wrapmode); + C = TextureFetch_Compressed(vramaddr, st_full + ivec4(0,1,0,0), wrapmode); + D = TextureFetch_Compressed(vramaddr, st_full + ivec4(1,1,0,0), wrapmode); + } + else if (type == 2) + { + A = TextureFetch_I2(vramaddr, st_full , wrapmode, alpha0); + B = TextureFetch_I2(vramaddr, st_full + ivec4(1,0,0,0), wrapmode, alpha0); + C = TextureFetch_I2(vramaddr, st_full + ivec4(0,1,0,0), wrapmode, alpha0); + D = TextureFetch_I2(vramaddr, st_full + ivec4(1,1,0,0), wrapmode, alpha0); + } + else if (type == 3) + { + A = TextureFetch_I4(vramaddr, st_full , wrapmode, alpha0); + B = TextureFetch_I4(vramaddr, st_full + ivec4(1,0,0,0), wrapmode, alpha0); + C = TextureFetch_I4(vramaddr, st_full + ivec4(0,1,0,0), wrapmode, alpha0); + D = TextureFetch_I4(vramaddr, st_full + ivec4(1,1,0,0), wrapmode, alpha0); + } + else if (type == 4) + { + A = TextureFetch_I8(vramaddr, st_full , wrapmode, alpha0); + B = TextureFetch_I8(vramaddr, st_full + ivec4(1,0,0,0), wrapmode, alpha0); + C = TextureFetch_I8(vramaddr, st_full + ivec4(0,1,0,0), wrapmode, alpha0); + D = TextureFetch_I8(vramaddr, st_full + ivec4(1,1,0,0), wrapmode, alpha0); + } + else if (type == 1) + { + A = TextureFetch_A3I5(vramaddr, st_full , wrapmode); + B = TextureFetch_A3I5(vramaddr, st_full + ivec4(1,0,0,0), wrapmode); + C = TextureFetch_A3I5(vramaddr, st_full + ivec4(0,1,0,0), wrapmode); + D = TextureFetch_A3I5(vramaddr, st_full + ivec4(1,1,0,0), wrapmode); + } + else if (type == 6) + { + A = TextureFetch_A5I3(vramaddr, st_full , wrapmode); + B = TextureFetch_A5I3(vramaddr, st_full + ivec4(1,0,0,0), wrapmode); + C = TextureFetch_A5I3(vramaddr, st_full + ivec4(0,1,0,0), wrapmode); + D = TextureFetch_A5I3(vramaddr, st_full + ivec4(1,1,0,0), wrapmode); + } + else + { + A = TextureFetch_Direct(vramaddr, st_full , wrapmode); + B = TextureFetch_Direct(vramaddr, st_full + ivec4(1,0,0,0), wrapmode); + C = TextureFetch_Direct(vramaddr, st_full + ivec4(0,1,0,0), wrapmode); + D = TextureFetch_Direct(vramaddr, st_full + ivec4(1,1,0,0), wrapmode); + } + + float fx = fracpart.x; + vec4 AB; + if (A.a < (0.5/31.0) && B.a < (0.5/31.0)) + AB = vec4(0); + else + { + //if (A.a < (0.5/31.0) || B.a < (0.5/31.0)) + // fx = step(0.5, fx); + + AB = mix(A, B, fx); + } + + fx = fracpart.x; + vec4 CD; + if (C.a < (0.5/31.0) && D.a < (0.5/31.0)) + CD = vec4(0); + else + { + //if (C.a < (0.5/31.0) || D.a < (0.5/31.0)) + // fx = step(0.5, fx); + + CD = mix(C, D, fx); + } + + fx = fracpart.y; + vec4 ret; + if (AB.a < (0.5/31.0) && CD.a < (0.5/31.0)) + ret = vec4(0); + else + { + //if (AB.a < (0.5/31.0) || CD.a < (0.5/31.0)) + // fx = step(0.5, fx); + + ret = mix(AB, CD, fx); + } + + return ret; +} + +vec4 FinalColor() +{ + vec4 col; + vec4 vcol = fColor; + int blendmode = (fPolygonAttr.x >> 4) & 0x3; + + if (blendmode == 2) + { + if ((uDispCnt & (1<<1)) == 0) + { + // toon + vec3 tooncolor = uToonColors[int(vcol.r * 31)].rgb; + vcol.rgb = tooncolor; + } + else + { + // highlight + vcol.rgb = vcol.rrr; + } + } + + if ((((fPolygonAttr.y >> 26) & 0x7) == 0) || ((uDispCnt & (1<<0)) == 0)) + { + // no texture + col = vcol; + } + else + { + vec4 tcol = TextureLookup_Nearest(fTexcoord); + //vec4 tcol = TextureLookup_Linear(fTexcoord); + + if ((blendmode & 1) != 0) + { + // decal + col.rgb = (tcol.rgb * tcol.a) + (vcol.rgb * (1.0-tcol.a)); + col.a = vcol.a; + } + else + { + // modulate + col = vcol * tcol; + } + } + + if (blendmode == 2) + { + if ((uDispCnt & (1<<1)) != 0) + { + vec3 tooncolor = uToonColors[int(vcol.r * 31)].rgb; + col.rgb = min(col.rgb + tooncolor, 1.0); + } + } + + return col.bgra; +} +)"; + + +const char* kRenderVS_Z = R"( + +void main() +{ + int attr = vPolygonAttr.x; + int zshift = (attr >> 16) & 0x1F; + + vec4 fpos; + fpos.xy = ((vec2(vPosition.xy) * 2.0) / uScreenSize) - 1.0; + fpos.z = (float(vPosition.z << zshift) / 8388608.0) - 1.0; + fpos.w = float(vPosition.w) / 65536.0f; + fpos.xyz *= fpos.w; + + fColor = vec4(vColor) / vec4(255.0,255.0,255.0,31.0); + fTexcoord = vec2(vTexcoord) / 16.0; + fPolygonAttr = vPolygonAttr; + + gl_Position = fpos; +} +)"; + +const char* kRenderVS_W = R"( + +smooth out float fZ; + +void main() +{ + int attr = vPolygonAttr.x; + int zshift = (attr >> 16) & 0x1F; + + vec4 fpos; + fpos.xy = ((vec2(vPosition.xy) * 2.0) / uScreenSize) - 1.0; + fZ = float(vPosition.z << zshift) / 16777216.0; + fpos.w = float(vPosition.w) / 65536.0f; + fpos.xy *= fpos.w; + + fColor = vec4(vColor) / vec4(255.0,255.0,255.0,31.0); + fTexcoord = vec2(vTexcoord) / 16.0; + fPolygonAttr = vPolygonAttr; + + gl_Position = fpos; +} +)"; + + +const char* kRenderFS_ZO = R"( + +void main() +{ + vec4 col = FinalColor(); + if (col.a < 30.5/31) discard; + + oColor = col; + oAttr.g = uint((fPolygonAttr.x >> 24) & 0x3F); +} +)"; + +const char* kRenderFS_WO = R"( + +smooth in float fZ; + +void main() +{ + vec4 col = FinalColor(); + if (col.a < 30.5/31) discard; + + oColor = col; + oAttr.g = uint((fPolygonAttr.x >> 24) & 0x3F); + gl_FragDepth = fZ; +} +)"; + +const char* kRenderFS_ZT = R"( + +void main() +{ + vec4 col = FinalColor(); + if (col.a < 0.5/31) discard; + if (col.a >= 30.5/31) discard; + + oColor = col; + oAttr.g = uint(0xFF); +} +)"; + +const char* kRenderFS_WT = R"( + +smooth in float fZ; + +void main() +{ + vec4 col = FinalColor(); + if (col.a < 0.5/31) discard; + if (col.a >= 30.5/31) discard; + + oColor = col; + oAttr.g = uint(0xFF); + gl_FragDepth = fZ; +} +)"; + +const char* kRenderFS_ZSM = R"( + +void main() +{ + oColor = vec4(0,0,0,1); + oAttr.g = uint(0xFF); +} +)"; + +const char* kRenderFS_WSM = R"( + +smooth in float fZ; + +void main() +{ + oColor = vec4(0,0,0,1); + oAttr.g = uint(0xFF); + gl_FragDepth = fZ; +} +)"; + +#endif // GPU3D_OPENGL_SHADERS_H |