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VideoCommon: Move repeated point/line expansion code to ShaderGenCommon

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This commit is contained in:
TellowKrinkle
2022-10-04 22:54:30 -05:00
parent 0a42c534c3
commit b567f3afcf
5 changed files with 89 additions and 117 deletions
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60
Source/Core/VideoCommon/UberShaderVertex.cpp
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@ -356,67 +356,19 @@ float3 load_input_float3_rawtex(uint vtx_offset, uint attr_offset) {{
" float4 other_p2 = P2;\n"
" if ((components & {}u) != 0u) {{ // VB_HAS_POSMTXIDX\n",
VB_HAS_POSMTXIDX);
out.Write(" uint other_posidx = int(load_input_uint4_ubyte4(other_base_offset, "
"vertex_offset_posmtx).r);\n"
out.Write(" uint other_posidx = load_input_uint4_ubyte4(other_base_offset, "
"vertex_offset_posmtx).r;\n"
" other_p0 = " I_TRANSFORMMATRICES "[other_posidx];\n"
" other_p1 = " I_TRANSFORMMATRICES "[other_posidx+1];\n"
" other_p2 = " I_TRANSFORMMATRICES "[other_posidx+2];\n"
" }}\n"
" float4 other_pos = float4(dot(other_p0, other_rawpos), "
"dot(other_p1, other_rawpos), dot(other_p2, other_rawpos), 1.0);\n"
" other_pos = float4(dot(" I_PROJECTION "[0], other_pos), dot(" I_PROJECTION
"[1], other_pos), dot(" I_PROJECTION "[2], other_pos), dot(" I_PROJECTION
"[3], other_pos));\n"
"\n"
" float sign = is_right ? 1.0f : -1.0f;\n"
// GameCube/Wii's line drawing algorithm is a little quirky. It does not
// use the correct line caps. Instead, the line caps are vertical or
// horizontal depending the slope of the line.
" float2 offset;\n"
" float2 to = abs(o.pos.xy / o.pos.w - other_pos.xy / other_pos.w);\n"
// FIXME: What does real hardware do when line is at a 45-degree angle?
// FIXME: Lines aren't drawn at the correct width. See Twilight Princess map.
" if (" I_LINEPTPARAMS ".y * to.y > " I_LINEPTPARAMS ".x * to.x) {{\n"
// Line is more tall. Extend geometry left and right.
// Lerp LineWidth/2 from [0..VpWidth] to [-1..1]
" offset = float2(sign * " I_LINEPTPARAMS ".z / " I_LINEPTPARAMS ".x, 0);\n"
" }} else {{\n"
// Line is more wide. Extend geometry up and down.
// Lerp LineWidth/2 from [0..VpHeight] to [1..-1]
" offset = float2(0, sign * " I_LINEPTPARAMS ".z / " I_LINEPTPARAMS ".y);\n"
" }}\n"
"\n"
" o.pos.xy += offset * o.pos.w;\n");
if (num_texgen > 0)
{
out.Write(" if ((" I_TEXOFFSET "[2] != 0) && is_right) {{\n"
" float texOffset = 1.0 / float(" I_TEXOFFSET "[2]);\n");
for (u32 i = 0; i < num_texgen; i++)
{
out.Write(" if (((" I_TEXOFFSET "[0] >> {}) & 0x1) != 0)\n", i);
out.Write(" o.tex{}.x += texOffset;\n", i);
}
out.Write(" }}\n");
}
"dot(other_p1, other_rawpos), dot(other_p2, other_rawpos), 1.0);\n");
GenerateVSLineExpansion(out, " ", num_texgen);
out.Write("}} else if (vs_expand == {}u) {{ // Point\n", static_cast<u32>(VSExpand::Point));
out.Write(" bool is_bottom = (gl_VertexID & 2) != 0;\n"
" bool is_right = (gl_VertexID & 1) != 0;\n"
" float2 sign = float2(is_right ? 1.0f : -1.0f, is_bottom ? 1.0f : -1.0f);\n"
" float2 offset = sign * " I_LINEPTPARAMS ".ww / " I_LINEPTPARAMS ".xy;\n"
" o.pos.xy += offset * o.pos.w;\n");
if (num_texgen > 0)
{
out.Write(" if (" I_TEXOFFSET "[3] != 0) {{\n"
" float texOffsetMagnitude = 1.0f / float(" I_TEXOFFSET "[3]);\n"
" float2 texOffset = float2(is_right ? texOffsetMagnitude : 0.0f, "
"is_bottom ? texOffsetMagnitude : 0.0f);");
for (u32 i = 0; i < num_texgen; i++)
{
out.Write(" if (((" I_TEXOFFSET "[1] >> {}) & 0x1) != 0)\n", i);
out.Write(" o.tex{}.xy += texOffset;\n", i);
}
out.Write(" }}\n");
}
" bool is_right = (gl_VertexID & 1) != 0;\n");
GenerateVSPointExpansion(out, " ", num_texgen);
out.Write("}}\n");
}