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Discover that various games that have black screen problem in nvidia is just caused by having negative zfar or znear values, in ati is not a problem, the drivers can handle it.

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This is a test, clamp the values to see if this fix the problem, please test a lot don't know if this breaks something else 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4491 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Rodolfo Osvaldo Bogado
2009-11-01 01:15:06 +00:00
parent 78fa929c70
commit 22a0864337
2 changed files with 8 additions and 1 deletions
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5
Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
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@ -1347,6 +1347,11 @@ void UpdateViewport()
double GLNear = (xfregs.rawViewport[5] - xfregs.rawViewport[2]) / 16777216.0f;
double GLFar = xfregs.rawViewport[5] / 16777216.0f;
if (GLNear < 0.0f) GLNear = 0.0f;
if (GLNear > 1.0f) GLNear = 1.0f;
if (GLFar > 1.0f) GLFar = 1.0f;
if (GLFar < 0.0f) GLFar = 0.0f;
// Update the view port
glViewport(GLx, GLy, GLWidth, GLHeight);
glDepthRange(GLNear, GLFar);