piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-21 05:09:34 -06:00
Code Issues Packages Projects Releases Wiki Activity

GeometryShader: Adjust positions after projection.

Browse Source 
By adjusting the positions in clip space we can avoid the re-projection.
This commit is contained in:
Jules Blok
2014-11-04 01:12:00 +01:00
parent ee76c03160
commit 51a4d6a4be
3 changed files with 5 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
Source/Core/VideoCommon/GeometryShaderGen.cpp
View File

@ -77,25 +77,16 @@ static inline void GenerateGeometryShader(T& out, u32 components, API_TYPE ApiTy
out.Write("\tfor (layer = 0; layer < %d; ++layer) {\n", g_ActiveConfig.iStereoMode > 0 ? 2 : 1);
out.Write("\tgl_Layer = layer;\n");
out.Write("\tvec4 stereoproj = " I_PROJECTION"[0];\n");
out.Write("\tstereoproj[2] += " I_STEREOOFFSET"[layer] * stereoproj[0];\n");
out.Write("\tfor (int i = 0; i < gl_in.length(); ++i) {\n");
out.Write("\t\to = v[i];\n");
if (g_ActiveConfig.iStereoMode > 0)
out.Write("\t\to.pos = float4(dot(stereoproj, v[i].rawpos), dot(" I_PROJECTION"[1], v[i].rawpos), dot(" I_PROJECTION"[2], v[i].rawpos), dot(" I_PROJECTION"[3], v[i].rawpos)); \n");
if (ApiType == API_D3D)
{
out.Write("\t\to.pos.z = " I_DEPTHPARAMS".x * o.pos.w + o.pos.z * " I_DEPTHPARAMS".y;\n");
}
else // OGL
{
out.Write("\t\to.pos.z = o.pos.w + o.pos.z * 2.0;\n");
out.Write("\t\to.clipPos.x += o.clipPos.w * " I_STEREOOFFSET"[layer] * " I_PROJECTION"[0][0];\n");
out.Write("\t\to.pos.x += o.pos.w * " I_STEREOOFFSET"[layer] * " I_PROJECTION"[0][0];\n");
}
out.Write("\t\to.pos.xy = o.pos.xy - " I_DEPTHPARAMS".zw;\n");
out.Write("\t\tgl_Position = o.pos;\n");
out.Write("\t\tEmitVertex();\n");
out.Write("\t}\n");