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- fixed: The stencil cap may never write to the depth buffer.

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Due to the way nested portals work this will block rendering of the nested cap entriely and cause some visual glitches when looking straight up or down in such a sector.

# Conflicts:
#	src/gl/scene/gl_portal.cpp
This commit is contained in:
Christoph Oelckers 2018-07-15 19:16:12 +02:00 committed by drfrag666
parent d36c839475
commit c519239a1b
2 changed files with 19 additions and 8 deletions
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17
src/gl/scene/gl_portal.cpp
View file

@ -138,7 +138,7 @@ void GLPortal::ClearScreen()
// DrawPortalStencil
//
//-----------------------------------------------------------------------------
void GLPortal::DrawPortalStencil()
void GLPortal::DrawPortalStencil(int pass)
{
if (mPrimIndices.Size() == 0)
{
@ -158,8 +158,11 @@ void GLPortal::DrawPortalStencil()
}
if (NeedCap() && lines.Size() > 1)
{
if (pass == STP_AllInOne) glDepthMask(false);
else if (pass == STP_DepthRestore) glDepthRange(1, 1);
GLRenderer->mVBO->RenderArray(GL_TRIANGLE_FAN, FFlatVertexBuffer::STENCILTOP_INDEX, 4);
GLRenderer->mVBO->RenderArray(GL_TRIANGLE_FAN, FFlatVertexBuffer::STENCILBOTTOM_INDEX, 4);
if (pass == STP_DepthRestore) glDepthRange(0, 1);
}
}
@ -210,7 +213,7 @@ bool GLPortal::Start(bool usestencil, bool doquery)
}
else doquery = false; // some kind of error happened
DrawPortalStencil();
DrawPortalStencil(STP_Stencil);
glEndQuery(GL_SAMPLES_PASSED);
@ -220,7 +223,7 @@ bool GLPortal::Start(bool usestencil, bool doquery)
glDepthMask(true); // enable z-buffer again
glDepthRange(1, 1);
glDepthFunc(GL_ALWAYS);
DrawPortalStencil();
DrawPortalStencil(STP_DepthClear);
// set normal drawing mode
gl_RenderState.EnableTexture(true);
@ -254,7 +257,7 @@ bool GLPortal::Start(bool usestencil, bool doquery)
// Note: We must draw the stencil with z-write enabled here because there is no second pass!
glDepthMask(true);
DrawPortalStencil();
DrawPortalStencil(STP_AllInOne);
glStencilFunc(GL_EQUAL, recursion + 1, ~0); // draw sky into stencil
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); // this stage doesn't modify the stencil
gl_RenderState.EnableTexture(true);
@ -373,7 +376,7 @@ void GLPortal::End(bool usestencil)
// first step: reset the depth buffer to max. depth
glDepthRange(1, 1); // always
glDepthFunc(GL_ALWAYS); // write the farthest depth value
DrawPortalStencil();
DrawPortalStencil(STP_DepthClear);
}
else
{
@ -385,7 +388,7 @@ void GLPortal::End(bool usestencil)
glDepthRange(0, 1);
glStencilOp(GL_KEEP, GL_KEEP, GL_DECR);
glStencilFunc(GL_EQUAL, recursion, ~0); // draw sky into stencil
DrawPortalStencil();
DrawPortalStencil(STP_DepthRestore);
glDepthFunc(GL_LESS);
@ -433,7 +436,7 @@ void GLPortal::End(bool usestencil)
gl_RenderState.BlendFunc(GL_ONE, GL_ZERO);
gl_RenderState.BlendEquation(GL_FUNC_ADD);
gl_RenderState.Apply();
DrawPortalStencil();
DrawPortalStencil(STP_DepthRestore);
gl_RenderState.SetEffect(EFF_NONE);
gl_RenderState.EnableTexture(true);
}

10
src/gl/scene/gl_portal.h
View file

@ -99,7 +99,15 @@ public:
static bool inskybox;
private:
void DrawPortalStencil();
enum
{
STP_Stencil,
STP_DepthClear,
STP_DepthRestore,
STP_AllInOne
};
void DrawPortalStencil(int pass);
DVector3 savedviewpath[2];
DVector3 savedViewPos;