The-Homebrew-Cloud/dolphin
2
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-03-10 11:37:43 +01:00
Code Issues Packages Projects Releases Wiki Activity

VideoCommon: move texcoord calculations to accessible functions in VertexShaderGen

Browse Source
This commit is contained in:
iwubcode 2025-02-14 22:44:49 -06:00
parent c770e7c276
commit 1ce78dd9b4
1 changed files with 80 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

146
Source/Core/VideoCommon/VertexShaderGen.cpp
View File

@ -74,6 +74,81 @@ VertexShaderUid GetVertexShaderUid()
return out;
}
void WriteTexCoordTransforms(APIType api_type, const ShaderHostConfig& host_config,
const vertex_shader_uid_data* uid_data, ShaderCode& out)
{
for (u32 i = 0; i < uid_data->numTexGens; ++i)
{
auto& texinfo = uid_data->texMtxInfo[i];
out.Write("vec3 dolphin_transform_texcoord{}(vec4 coord)\n", i);
out.Write("{{\n");
if (texinfo.texgentype != TexGenType::Regular)
{
out.Write("\treturn vec3(coord.xyz);\n");
}
else
{
out.Write("\tvec3 result;\n");
if ((uid_data->components & (VB_HAS_TEXMTXIDX0 << i)) != 0)
{
out.Write("\tint tmp = int(rawtex{}.z);\n", i);
if (static_cast<TexSize>((uid_data->texMtxInfo_n_projection >> i) & 1) == TexSize::STQ)
{
out.Write("\tresult = vec3(dot(coord, " I_TRANSFORMMATRICES
"[tmp]), dot(coord, " I_TRANSFORMMATRICES
"[tmp+1]), dot(coord, " I_TRANSFORMMATRICES "[tmp+2]));\n");
}
else
{
out.Write("\tresult = vec3(dot(coord, " I_TRANSFORMMATRICES
"[tmp]), dot(coord, " I_TRANSFORMMATRICES "[tmp+1]), 1);\n");
}
}
else
{
if (static_cast<TexSize>((uid_data->texMtxInfo_n_projection >> i) & 1) == TexSize::STQ)
{
out.Write("\tresult = vec3(dot(coord, " I_TEXMATRICES "[{}]), dot(coord, " I_TEXMATRICES
"[{}]), dot(coord, " I_TEXMATRICES "[{}]));\n",
3 * i, 3 * i + 1, 3 * i + 2);
}
else
{
out.Write("\tresult = vec3(dot(coord, " I_TEXMATRICES "[{}]), dot(coord, " I_TEXMATRICES
"[{}]), 1);\n",
3 * i, 3 * i + 1);
}
}
// CHECKME: does this only work for regular tex gen types?
if (uid_data->dualTexTrans_enabled)
{
auto& postInfo = uid_data->postMtxInfo[i];
out.Write("\tvec4 P0 = " I_POSTTRANSFORMMATRICES "[{}];\n"
"\tvec4 P1 = " I_POSTTRANSFORMMATRICES "[{}];\n"
"\tvec4 P2 = " I_POSTTRANSFORMMATRICES "[{}];\n",
postInfo.index & 0x3f, (postInfo.index + 1) & 0x3f, (postInfo.index + 2) & 0x3f);
if (postInfo.normalize)
out.Write("\tresult = normalize(result);\n");
// multiply by postmatrix
out.Write("\tresult = vec3(dot(P0.xyz, result) + P0.w, dot(P1.xyz, result) + "
"P1.w, dot(P2.xyz, result) + P2.w);\n");
}
// When q is 0, the GameCube appears to have a special case
// This can be seen in devkitPro's neheGX Lesson08 example for Wii
// Makes differences in Rogue Squadron 3 (Hoth sky) and The Last Story (shadow culling)
// TODO: check if this only affects XF_TEXGEN_REGULAR
out.Write("\tif(result.z == 0.0f)\n"
"\t\tresult.xy = clamp(result.xy / 2.0f, vec2(-1.0f,-1.0f), vec2(1.0f,1.0f));\n");
out.Write("\treturn result;\n");
}
out.Write("}}\n\n");
}
}
ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& host_config,
const vertex_shader_uid_data* uid_data)
{
@ -260,6 +335,8 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& ho
}
}
WriteTexCoordTransforms(api_type, host_config, uid_data, out);
out.Write("void main()\n{{\n");
if (uid_data->vs_expand != VSExpand::None)
@ -434,73 +511,10 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& ho
out.Write("o.tex{}.xyz = float3(o.colors_1.x, o.colors_1.y, 1);\n", i);
break;
case TexGenType::Regular:
default:
if ((uid_data->components & (VB_HAS_TEXMTXIDX0 << i)) != 0)
{
out.Write("int tmp = int(rawtex{}.z);\n", i);
if (static_cast<TexSize>((uid_data->texMtxInfo_n_projection >> i) & 1) == TexSize::STQ)
{
out.Write("o.tex{}.xyz = float3(dot(coord, " I_TRANSFORMMATRICES
"[tmp]), dot(coord, " I_TRANSFORMMATRICES
"[tmp+1]), dot(coord, " I_TRANSFORMMATRICES "[tmp+2]));\n",
i);
}
else
{
out.Write("o.tex{}.xyz = float3(dot(coord, " I_TRANSFORMMATRICES
"[tmp]), dot(coord, " I_TRANSFORMMATRICES "[tmp+1]), 1);\n",
i);
}
}
else
{
if (static_cast<TexSize>((uid_data->texMtxInfo_n_projection >> i) & 1) == TexSize::STQ)
{
out.Write("o.tex{}.xyz = float3(dot(coord, " I_TEXMATRICES
"[{}]), dot(coord, " I_TEXMATRICES "[{}]), dot(coord, " I_TEXMATRICES
"[{}]));\n",
i, 3 * i, 3 * i + 1, 3 * i + 2);
}
else
{
out.Write("o.tex{}.xyz = float3(dot(coord, " I_TEXMATRICES
"[{}]), dot(coord, " I_TEXMATRICES "[{}]), 1);\n",
i, 3 * i, 3 * i + 1);
}
}
out.Write("o.tex{0}.xyz = dolphin_transform_texcoord{0}(coord);\n", i);
break;
}
// CHECKME: does this only work for regular tex gen types?
if (uid_data->dualTexTrans_enabled && texinfo.texgentype == TexGenType::Regular)
{
auto& postInfo = uid_data->postMtxInfo[i];
out.Write("float4 P0 = " I_POSTTRANSFORMMATRICES "[{}];\n"
"float4 P1 = " I_POSTTRANSFORMMATRICES "[{}];\n"
"float4 P2 = " I_POSTTRANSFORMMATRICES "[{}];\n",
postInfo.index & 0x3f, (postInfo.index + 1) & 0x3f, (postInfo.index + 2) & 0x3f);
if (postInfo.normalize)
out.Write("o.tex{}.xyz = normalize(o.tex{}.xyz);\n", i, i);
// multiply by postmatrix
out.Write(
"o.tex{0}.xyz = float3(dot(P0.xyz, o.tex{0}.xyz) + P0.w, dot(P1.xyz, o.tex{0}.xyz) + "
"P1.w, dot(P2.xyz, o.tex{0}.xyz) + P2.w);\n",
i);
}
// When q is 0, the GameCube appears to have a special case
// This can be seen in devkitPro's neheGX Lesson08 example for Wii
// Makes differences in Rogue Squadron 3 (Hoth sky) and The Last Story (shadow culling)
// TODO: check if this only affects XF_TEXGEN_REGULAR
if (texinfo.texgentype == TexGenType::Regular)
{
out.Write(
"if(o.tex{0}.z == 0.0f)\n"
"\to.tex{0}.xy = clamp(o.tex{0}.xy / 2.0f, float2(-1.0f,-1.0f), float2(1.0f,1.0f));\n",
i);
default:
ASSERT(false);
}
out.Write("}}\n");