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gsdx-ogl: add a note for a future small optimization

This commit is contained in:
Gregory Hainaut 2016-04-24 11:56:31 +02:00
parent 9d2cd8490c
commit b4b878ac24
1 changed files with 3 additions and 0 deletions
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3
plugins/GSdx/GSDeviceOGL.cpp
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@ -1182,6 +1182,7 @@ void GSDeviceOGL::DoMerge(GSTexture* sTex[2], GSVector4* sRect, GSTexture* dTex,
if(sTex[0])
{
// TODO: potentially we could cache the value to avoid to upload every frame
m_merge_obj.cb->upload(&c.v);
StretchRect(sTex[0], sRect[0], dTex, dRect[0], m_merge_obj.ps[mmod ? 1 : 0], m_MERGE_BLEND);
@ -1201,6 +1202,7 @@ void GSDeviceOGL::DoInterlace(GSTexture* sTex, GSTexture* dTex, int shader, bool
GSVector4 sRect(0, 0, 1, 1);
GSVector4 dRect(0.0f, yoffset, s.x, s.y + yoffset);
// TODO: potentially we could cache the value to avoid to upload every frame
InterlaceConstantBuffer cb;
cb.ZrH = GSVector2(0, 1.0f / s.y);
@ -1283,6 +1285,7 @@ void GSDeviceOGL::DoExternalFX(GSTexture* sTex, GSTexture* dTex)
ExternalFXConstantBuffer cb;
// TODO: potentially we could cache the value to avoid to upload every frame
cb.xyFrame = GSVector2((float)s.x, (float)s.y);
cb.rcpFrame = GSVector4(1.0f / s.x, 1.0f / s.y, 0.0f, 0.0f);
cb.rcpFrameOpt = GSVector4::zero();