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- fixed: The viewpoint buffer was mapped write only but read from. On old hardware it wasn't even mapped.

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Changed to cache the needed value in a CPU-side array so that the buffer access is not needed.
This commit is contained in:
Christoph Oelckers 2018-08-18 22:29:22 +02:00
parent 0e6af71376
commit dd971805af
2 changed files with 5 additions and 2 deletions
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6
src/gl/data/gl_viewpointbuffer.cpp
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@ -41,6 +41,7 @@ GLViewpointBuffer::GLViewpointBuffer()
Allocate();
Clear();
mLastMappedIndex = UINT_MAX;
mClipPlaneInfo.Push(0);
}
GLViewpointBuffer::~GLViewpointBuffer()
@ -121,10 +122,9 @@ int GLViewpointBuffer::Bind(unsigned int index)
glBindBufferRange(GL_UNIFORM_BUFFER, VIEWPOINT_BINDINGPOINT, mBufferId, index * mBlockAlign, mBlockAlign);
// Update the viewpoint-related clip plane setting.
auto *vp = (HWViewpointUniforms*)(((char*)mBufferPointer) + mUploadIndex * mBlockAlign);
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
if (index > 0 && (vp->mClipHeightDirection != 0.f || vp->mClipLine.X > -10000000.0f))
if (mClipPlaneInfo[index])
{
glEnable(GL_CLIP_DISTANCE0);
}
@ -162,6 +162,7 @@ int GLViewpointBuffer::SetViewpoint(HWViewpointUniforms *vp)
memcpy(((char*)mBufferPointer) + mUploadIndex * mBlockAlign, vp, sizeof(*vp));
Unmap();
mClipPlaneInfo.Push(vp->mClipHeightDirection != 0.f || vp->mClipLine.X > -10000000.0f);
return Bind(mUploadIndex++);
}
@ -169,5 +170,6 @@ void GLViewpointBuffer::Clear()
{
// Index 0 is reserved for the 2D projection.
mUploadIndex = 1;
mClipPlaneInfo.Resize(1);
}

1
src/gl/data/gl_viewpointbuffer.h
View file

@ -12,6 +12,7 @@ class GLViewpointBuffer
unsigned int mLastMappedIndex;
unsigned int mByteSize;
void * mBufferPointer;
TArray<bool> mClipPlaneInfo;
unsigned int m2DWidth = ~0u, m2DHeight = ~0u;