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Ported Linux GL renderer to Vita build.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,199 @@ | ||
| static const char gN64FragmentLibrary[] = | ||
| "int2 imix(int2 a, int2 b, bool2 c)\n" | ||
| "{\n" | ||
| " return int2(lerp(float2(a), float2(b), float2(c)));\n" | ||
| "}\n" | ||
| "\n" | ||
| "// coord: 10.5\n" | ||
| "// return: 10.5\n" | ||
| "int2 shift(int2 coord, float2 shift_scale)\n" | ||
| "{\n" | ||
| " return int2(float2(coord) * shift_scale);\n" | ||
| "}\n" | ||
| "\n" | ||
| "// Clamp a UV coord when point sampling.\n" | ||
| "// coord: 10.5\n" | ||
| "// return: 10.0, frac (0.5)\n" | ||
| "int2 clampPoint(int2 coord, int2 tile_tl, int2 tile_br, bool2 clamp_enable)\n" | ||
| "{\n" | ||
| " int2 coord_clamped = clamp(coord, tile_tl<<3, tile_br<<3);\n" | ||
| " int2 coord_out = imix(coord, coord_clamped, clamp_enable);\n" | ||
| "\n" | ||
| " // NB: discard fractional bits.\n" | ||
| " int2 coord_relative = ((coord_out>>3) - tile_tl) >> 2;\n" | ||
| " return coord_relative;\n" | ||
| "}\n" | ||
| "\n" | ||
| "// coord: 10.5\n" | ||
| "// return: 10.0, frac (0.5)\n" | ||
| "int2 clampBilinear(int2 coord, int2 tile_tl, int2 tile_br, bool2 clamp_enable, out int2 frac)\n" | ||
| "{\n" | ||
| " int2 tl = tile_tl<<3;\n" | ||
| " int2 br = tile_br<<3;\n" | ||
| "\n" | ||
| " int2 coord_clamped = clamp(coord, tl, br);\n" | ||
| " int2 coord_out = imix(coord, coord_clamped, clamp_enable);\n" | ||
| "\n" | ||
| " // NB: retain fractional bits.\n" | ||
| " int2 coord_relative = coord_out - (tile_tl << 3);\n" | ||
| "\n" | ||
| " frac = coord_relative & 0x1f;\n" | ||
| " return coord_relative >> 5;\n" | ||
| "}\n" | ||
| "\n" | ||
| "bool2 notEqual(int2 x, int2 y)\n" | ||
| "{\n" | ||
| " return bool2(x.x != y.x, x.y != y.y);\n" | ||
| "}\n" | ||
| "\n" | ||
| "// coord: 10.0\n" | ||
| "// return: 10.0\n" | ||
| "int2 mask(int2 coord, int2 mirror_bits, int2 mask_bits)\n" | ||
| "{\n" | ||
| " bool2 mirror = notEqual(coord & mirror_bits, int2(0,0));\n" | ||
| " coord = imix(coord, ~coord, mirror); // Invert the bits if mirroring.\n" | ||
| " coord &= mask_bits;\n" | ||
| " return coord;\n" | ||
| "}\n" | ||
| "\n" | ||
| "// This is higher quality bilinear filter than the n64 hardware used, and probably cheaper.\n" | ||
| "float4 bilinear(float4 col_00, float4 col_01, float4 col_10, float4 col_11, int2 frac)\n" | ||
| "{\n" | ||
| " float2 fracf = float2(frac) / 32.f;\n" | ||
| "\n" | ||
| " float4 a = lerp(col_00, col_10, fracf.x);\n" | ||
| " float4 b = lerp(col_01, col_11, fracf.x);\n" | ||
| " return lerp(a, b, fracf.y);\n" | ||
| "}\n" | ||
| "\n" | ||
| "float4 bilinear_n64(float4 col_00, float4 col_01, float4 col_10, float4 col_11, int2 frac)\n" | ||
| "{\n" | ||
| " bool upper = frac.x + frac.y >= 0x20;\n" | ||
| " bool4 uppersel = bool4(upper, upper, upper, upper);\n" | ||
| "\n" | ||
| " // Pick either the bottom-left or top-right texel, and lerp along the edges.\n" | ||
| " float4 col0 = lerp(col_00, col_11, uppersel);\n" | ||
| " float4 col1 = lerp(col_10, col_01, uppersel);\n" | ||
| " float4 col2 = lerp(col_01, col_10, uppersel);\n" | ||
| " float2 fracf = imix(frac, 0x20 - frac, uppersel.xy) / 32.f;\n" | ||
| "\n" | ||
| " float4 col = col0 + (fracf.x * (col1 - col0)) + (fracf.y * (col2 - col0));\n" | ||
| " return clamp(col, 0.f, 1.f);\n" | ||
| "}\n" | ||
| "\n" | ||
| "float4 fetchBilinear(float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " int2 frac;\n" | ||
| " int2 uv0 = int2(st_in);\n" | ||
| " uv0 = shift(uv0, shift_scale);\n" | ||
| " uv0 = clampBilinear(uv0, tile_tl, tile_br, clamp_enable, /*out */frac);\n" | ||
| "\n" | ||
| " int2 uv1 = uv0 + int2(1,1);\n" | ||
| "\n" | ||
| " uv0 = mask(uv0, mirror_bits, mask_bits);\n" | ||
| " uv1 = mask(uv1, mirror_bits, mask_bits);\n" | ||
| "\n" | ||
| " float4 col_00 = texelFetch(tex, int2(uv0.x, uv0.y), 0);\n" | ||
| " float4 col_01 = texelFetch(tex, int2(uv0.x, uv1.y), 0);\n" | ||
| " float4 col_10 = texelFetch(tex, int2(uv1.x, uv0.y), 0);\n" | ||
| " float4 col_11 = texelFetch(tex, int2(uv1.x, uv1.y), 0);\n" | ||
| "\n" | ||
| " return bilinear(col_00, col_01, col_10, col_11, frac);\n" | ||
| "}\n" | ||
| "\n" | ||
| "float4 fetchBilinearClampedCommon(\n" | ||
| " float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale, int2 bilerp_wrap_enable)\n" | ||
| "{\n" | ||
| " int2 frac;\n" | ||
| " int2 uv0 = int2(st_in);\n" | ||
| " uv0 = shift(uv0, shift_scale);\n" | ||
| " uv0 = clampBilinear(uv0, tile_tl, tile_br, clamp_enable, /*out */frac);\n" | ||
| "\n" | ||
| " int2 uv1 = uv0 + int2(1,1);\n" | ||
| "\n" | ||
| " uv0 = mask(uv0, mirror_bits, mask_bits);\n" | ||
| " uv1 = mask(uv1, mirror_bits, mask_bits);\n" | ||
| "\n" | ||
| " // If uv1 has wrapped (less than uv0) then set to zero\n" | ||
| " // (bilerp_wrap_enable is a bitmask - if 0, the fractional bits are zeroed)\n" | ||
| " frac = imix(frac, frac & bilerp_wrap_enable, lessThan(uv1, uv0));\n" | ||
| "\n" | ||
| " float4 col_00 = texelFetch(tex, int2(uv0.x, uv0.y), 0);\n" | ||
| " float4 col_01 = texelFetch(tex, int2(uv0.x, uv1.y), 0);\n" | ||
| " float4 col_10 = texelFetch(tex, int2(uv1.x, uv0.y), 0);\n" | ||
| " float4 col_11 = texelFetch(tex, int2(uv1.x, uv1.y), 0);\n" | ||
| "\n" | ||
| " return bilinear(col_00, col_01, col_10, col_11, frac);\n" | ||
| "}\n" | ||
| "\n" | ||
| "float4 fetchBilinearClampedS(\n" | ||
| " float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " return fetchBilinearClampedCommon(\n" | ||
| " st_in, shift_scale, mirror_bits,mask_bits,\n" | ||
| " tile_tl, tile_br, clamp_enable, tex, tex_scale, int2(0, -1));\n" | ||
| "}\n" | ||
| "\n" | ||
| "float4 fetchBilinearClampedT(float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " return fetchBilinearClampedCommon(\n" | ||
| " st_in, shift_scale, mirror_bits,mask_bits,\n" | ||
| " tile_tl, tile_br, clamp_enable, tex, tex_scale, int2(-1, 0));\n" | ||
| "}\n" | ||
| "\n" | ||
| "float4 fetchBilinearClampedST(float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " return fetchBilinearClampedCommon(\n" | ||
| " st_in, shift_scale, mirror_bits,mask_bits,\n" | ||
| " tile_tl, tile_br, clamp_enable, tex, tex_scale, int2(0, 0));\n" | ||
| "}\n" | ||
| "\n" | ||
| "// Point sample\n" | ||
| "float4 fetchPoint(float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " int2 uv = int2(st_in);\n" | ||
| " uv = shift(uv, shift_scale);\n" | ||
| " uv = clampPoint(uv, tile_tl, tile_br, clamp_enable);\n" | ||
| " uv = mask(uv, mirror_bits, mask_bits);\n" | ||
| "\n" | ||
| " return texelFetch(tex, uv, 0);\n" | ||
| "}\n" | ||
| "\n" | ||
| "// For cycle type Copy - there is no clamping.\n" | ||
| "float4 fetchCopy(float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " int2 uv = int2(st_in);\n" | ||
| " uv = shift(uv, shift_scale);\n" | ||
| " uv = (((uv>>3) - tile_tl) >> 2) & 0x1fff;\n" | ||
| " uv = mask(uv, mirror_bits, mask_bits);\n" | ||
| "\n" | ||
| " return texelFetch(tex, uv, 0);\n" | ||
| "}\n" | ||
| "\n" | ||
| "// This just uses regular OpenGL texture filtering.\n" | ||
| "// It doesn't handle shift/scale/mirror etc.\n" | ||
| "float4 fetchSimple(float2 st_in, float2 shift_scale, int2 mirror_bits, int2 mask_bits,\n" | ||
| " int2 tile_tl, int2 tile_br, bool2 clamp_enable,\n" | ||
| " sampler2D tex, float2 tex_scale)\n" | ||
| "{\n" | ||
| " int2 uv = int2(st_in);\n" | ||
| " uv = shift(uv, shift_scale);\n" | ||
| "\n" | ||
| " float2 uvf = (uv - (tile_tl<<3)) * (tex_scale / 32.f);\n" | ||
| " return texture(tex, uvf);\n" | ||
| "}\n" | ||
| ; |
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