piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-23 06:09:50 -06:00
Code Issues Packages Projects Releases Wiki Activity

VideoBackends: Set the maximum range when the depth range is oversized.

Browse Source 
The depth values generated by the vertex shader need to be clamped correctly.
This commit is contained in:
Jules Blok
2017-02-19 16:41:04 +01:00
parent 51944afa56
commit 28e6e259ed
4 changed files with 36 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
Source/Core/VideoBackends/OGL/Render.cpp
View File

@ -1123,6 +1123,24 @@ void Renderer::SetViewport()
Height *= -1;
}
// If an oversized depth range is used, we need to calculate the depth range in the vertex shader.
if (g_ActiveConfig.backend_info.bSupportsDepthClamp &&
(fabs(xfmem.viewport.zRange) > 16777215.0f || fabs(xfmem.viewport.farZ) > 16777215.0f))
{
// We need to ensure depth values are clamped the maximum value supported by the console GPU.
// Taking into account whether the depth range is inverted or not.
if (xfmem.viewport.zRange < 0.0f)
{
min_depth = GX_MAX_DEPTH;
max_depth = 0.0f;
}
else
{
min_depth = 0.0f;
max_depth = GX_MAX_DEPTH;
}
}
// Update the view port
if (g_ogl_config.bSupportViewportFloat)
{
@ -1134,10 +1152,7 @@ void Renderer::SetViewport()
glViewport(iceilf(X), iceilf(Y), iceilf(Width), iceilf(Height));
}
// Set the reversed depth range. If we do depth clipping and depth range in the
// vertex shader we only need to ensure depth values don't exceed the maximum
// value supported by the console GPU. If not, we simply clamp the near/far values
// themselves to the maximum value as done above.
// Set the reversed depth range.
glDepthRangef(max_depth, min_depth);
}