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Further refactoring attempt

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This commit is contained in:
Pokechu22 2022-02-27 12:05:21 -08:00
commit 0c34ca7b89
1 changed files with 32 additions and 23 deletions
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49
Source/Core/VideoCommon/LightingShaderGen.cpp
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@ -22,25 +22,48 @@ static void GenerateLightShader(ShaderCode& object, const LightingUidData& uid_d
object.Write(" float3 ldir = " LIGHT_POS ".xyz - pos.xyz;\n", LIGHT_POS_PARAMS(index));
object.Write(" float dist2 = dot(ldir, ldir);\n"
" float dist = sqrt(dist2);\n"
" ldir = ldir / dist;\n");
" ldir = ldir / dist;\n\n");
switch (diffuse_func)
{
case DiffuseFunc::None:
object.Write(" float diffuse = 1.0;\n\n");
break;
case DiffuseFunc::Sign:
default: // Confirmed by hardware testing that invalid values use this
object.Write(" float diffuse = dot(ldir, _normal);\n\n");
break;
case DiffuseFunc::Clamp:
object.Write(" float diffuse = max(0.0, dot(ldir, _normal));\n\n");
break;
}
switch (attn_func)
{
case AttenuationFunc::None:
if (diffuse_func == DiffuseFunc::None)
{
object.Write(" float attn = 1.0;\n");
break;
}
else
{
object.Write(" lacc.{} += int{}(round(255 * sign(diffuse)));\n", swizzle,
swizzle_components);
object.Write(" }}\n");
return; // Return, not break!
}
case AttenuationFunc::Dir:
object.Write(" float attn = 1.0;\n");
break;
case AttenuationFunc::Spec:
object.Write(" float cosine = 0.0;\n"
" // Ensure that the object is facing the light\n"
" if (dot(_normal, ldir) >= 0.0) {{\n"
" // Compute the cosine of the angle between the object normal\n"
" // and the half-angle direction for the viewer\n"
" // (assuming the half-angle direction is a unit vector)\n"
" cosine = max(0.0, dot(_normal, " LIGHT_DIR ".xyz));\n",
" cosine = max(0.0, dot(_normal, -" LIGHT_DIR ".xyz));\n",
LIGHT_DIR_PARAMS(index));
object.Write(" }}\n"
" // Specular lights use the angle for the denominator as well\n"
object.Write(" // Specular lights use the angle for the denominator as well\n"
" dist = cosine;\n"
" dist2 = dist * dist;\n");
break;
@ -76,20 +99,6 @@ static void GenerateLightShader(ShaderCode& object, const LightingUidData& uid_d
" float attn = max(0.0f, numerator / denominator);\n");
}
switch (diffuse_func)
{
case DiffuseFunc::None:
object.Write(" float diffuse = 1.0;\n");
break;
case DiffuseFunc::Sign:
default: // Confirmed by hardware testing that invalid values use this
object.Write(" float diffuse = dot(ldir, _normal);\n");
break;
case DiffuseFunc::Clamp:
object.Write(" float diffuse = max(0.0, dot(ldir, _normal));\n");
break;
}
object.Write(" lacc.{} += int{}(round(attn * diffuse * float{}(" LIGHT_COL ")));\n", swizzle,
swizzle_components, swizzle_components, LIGHT_COL_PARAMS(index, swizzle));
object.Write(" }}\n");