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fallback for missing stencil wrap

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git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@2625 e016b1c5-ed68-44aa-a2f7-31cac88cffde
This commit is contained in:
Lee Salzman
2008-09-15 11:46:37 +00:00
parent 4cb66ee2f1
commit bca2137d6d
4 changed files with 21 additions and 11 deletions
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source/src/shadow.cpp
+15 -7
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@@ -330,7 +330,7 @@ void drawstencilshadows()
shadowx1 = shadowy1 = 1;
memset(shadowtiles, 0, sizeof(shadowtiles));
if((hasST2 || hasSTS) && hasSTW)
if(hasST2 || hasSTS)
{
glDisable(GL_CULL_FACE);
@@ -340,17 +340,17 @@ void drawstencilshadows()
glActiveStencilFace_(GL_BACK);
glStencilFunc(GL_ALWAYS, 0, ~0U);
glStencilOp(GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT);
glStencilOp(GL_KEEP, GL_KEEP, hasSTW ? GL_INCR_WRAP_EXT : GL_INCR);
glActiveStencilFace_(GL_FRONT);
glStencilFunc(GL_ALWAYS, 0, ~0U);
glStencilOp(GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT);
glStencilOp(GL_KEEP, GL_KEEP, hasSTW ? GL_DECR_WRAP_EXT : GL_DECR);
}
else
{
glStencilFuncSeparate_(GL_ALWAYS, GL_ALWAYS, 0, ~0U);
glStencilOpSeparate_(GL_BACK, GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT);
glStencilOpSeparate_(GL_FRONT, GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT);
glStencilOpSeparate_(GL_BACK, GL_KEEP, GL_KEEP, hasSTW ? GL_INCR_WRAP_EXT : GL_INCR);
glStencilOpSeparate_(GL_FRONT, GL_KEEP, GL_KEEP, hasSTW ? GL_DECR_WRAP_EXT : GL_DECR);
}
startmodelbatches();
@@ -393,8 +393,16 @@ void drawstencilshadows()
{
glDisable(GL_DEPTH_TEST);
glStencilFunc(GL_NOTEQUAL, 0, ~0U);
glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO);
if((hasST2 || hasSTS) && !hasSTW)
{
glStencilFunc(GL_NOTEQUAL, 128, ~0U);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
}
else
{
glStencilFunc(GL_NOTEQUAL, 0, ~0U);
glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO);
}
glEnable(GL_BLEND);
glBlendFunc(GL_ZERO, GL_SRC_COLOR);