vcl/inc/opengl/RenderState.hxx | 134 ++++++++++++++++++++++--------------
vcl/opengl/gdiimpl.cxx | 19 ++---
vcl/source/opengl/OpenGLContext.cxx | 5 -
3 files changed, 96 insertions(+), 62 deletions(-)
New commits:
commit 2712237ffc1f56be3f1de8dbc80d05766c780729
Author: Tomaž Vajngerl <tomaz.vajng...@collabora.co.uk>
Date: Fri Apr 29 17:17:09 2016 +0900
opengl: track the state of glViewport
We don't want to set the viewport over and over again.
Change-Id: I60b84a009d4058743e30587616604f9b6fc0f601
diff --git a/vcl/inc/opengl/RenderState.hxx b/vcl/inc/opengl/RenderState.hxx
index eeac1a50..ac215a8 100644
--- a/vcl/inc/opengl/RenderState.hxx
+++ b/vcl/inc/opengl/RenderState.hxx
@@ -123,10 +123,22 @@ class RenderState
ScissorState maScissor;
StencilState maStencil;
+ Rectangle maCurrentViewport;
+
public:
RenderState()
{}
+ void viewport(Rectangle aViewPort)
+ {
+ if (aViewPort != maCurrentViewport)
+ {
+ glViewport(aViewPort.Left(), aViewPort.Top(),
aViewPort.GetWidth(), aViewPort.GetHeight());
+ CHECK_GL_ERROR();
+ maCurrentViewport = aViewPort;
+ }
+ }
+
TextureState& texture() { return maTexture; }
ScissorState& scissor() { return maScissor; }
StencilState& stencil() { return maStencil; }
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index 4636e13..d9640b9 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -209,8 +209,7 @@ void
OpenGLSalGraphicsImpl::InitializePreDrawState(XOROption eOpt)
CheckOffscreenTexture();
CHECK_GL_ERROR();
- glViewport( 0, 0, GetWidth(), GetHeight() );
- CHECK_GL_ERROR();
+ mpContext->state()->viewport(Rectangle(Point(0, 0), Size(GetWidth(),
GetHeight())));
ImplInitClipRegion();
CHECK_GL_ERROR();
@@ -2543,9 +2542,7 @@ void OpenGLSalGraphicsImpl::doFlush()
mpWindowContext->AcquireDefaultFramebuffer();
CHECK_GL_ERROR();
- glViewport( 0, 0, GetWidth(), GetHeight() );
- CHECK_GL_ERROR();
-
+ mpWindowContext->state()->viewport(Rectangle(Point(0, 0), Size(GetWidth(),
GetHeight())));
mpWindowContext->state()->scissor().disable();
mpWindowContext->state()->stencil().disable();
diff --git a/vcl/source/opengl/OpenGLContext.cxx
b/vcl/source/opengl/OpenGLContext.cxx
index 38a49e5..1ac5f4d 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -1683,8 +1683,8 @@ OpenGLFramebuffer* OpenGLContext::AcquireFramebuffer(
const OpenGLTexture& rText
assert( pFramebuffer );
BindFramebuffer( pFramebuffer );
pFramebuffer->AttachTexture( rTexture );
- glViewport( 0, 0, rTexture.GetWidth(), rTexture.GetHeight() );
- CHECK_GL_ERROR();
+
+ state()->viewport(Rectangle(Point(), Size(rTexture.GetWidth(),
rTexture.GetHeight())));
return pFramebuffer;
}
commit 65c6f5e3a5ccf81f90b3bb7d5c46d967ee5ef4e3
Author: Tomaž Vajngerl <tomaz.vajng...@collabora.co.uk>
Date: Fri Apr 29 17:07:11 2016 +0900
opengl: sync scissor and stencil state, generic capability state
Scissor and stencil test needed to be disabled in flush() (which
means every postDraw call) because sometimes the state became out
of sync with the current state. This commit adds sync() function
which synchronises the actual OpenGL state and adds debugging
mechanisms to warn when the state becomes out of sync (so we can
inspect the exact moment in apitrace).
Added a GenericCapabilityState for GL capabilities like
GL_SCISSORS_TEST, GL_STENCIL_TEST, GL_BLEND,... and refactored
existing ScissorState and StencilState to inherit from it.
Change-Id: Ifc159108a5ce850c78a89b1f5b8d12ecdd84f459
diff --git a/vcl/inc/opengl/RenderState.hxx b/vcl/inc/opengl/RenderState.hxx
index b1b0b18..eeac1a50 100644
--- a/vcl/inc/opengl/RenderState.hxx
+++ b/vcl/inc/opengl/RenderState.hxx
@@ -13,95 +13,110 @@
#include "opengl/TextureState.hxx"
-class ScissorState
+template<GLenum ENUM_TYPE, typename TYPE>
+class GenericCapabilityState
{
+protected:
bool mbTest;
- int mX;
- int mY;
- int mWidth;
- int mHeight;
-public:
-
- ScissorState()
- : mbTest(false)
- , mX(0)
- , mY(0)
- , mWidth(0)
- , mHeight(0)
+ bool readState()
{
- glDisable(GL_SCISSOR_TEST);
- CHECK_GL_ERROR();
- }
+ return (glIsEnabled(ENUM_TYPE) == GL_TRUE);
+ };
- void set(int x, int y, int width, int height)
+public:
+ void sync()
{
- if (x != mX || y != mY || width != mWidth || height != mHeight)
- {
- glScissor(x, y, width, height);
- CHECK_GL_ERROR();
-
- mX = x;
- mY = y;
- mWidth = width;
- mHeight = height;
- }
+ mbTest = readState();
}
void enable()
{
if (!mbTest)
{
- glEnable(GL_SCISSOR_TEST);
+ glEnable(ENUM_TYPE);
CHECK_GL_ERROR();
mbTest = true;
}
+ else
+ {
+ VCL_GL_INFO(TYPE::className() << ": enable called but already
set");
+ }
+#ifdef DBG_UTIL
+ checkState();
+#endif
}
void disable()
{
if (mbTest)
{
- glDisable(GL_SCISSOR_TEST);
+ glDisable(ENUM_TYPE);
CHECK_GL_ERROR();
mbTest = false;
}
+ else
+ {
+ VCL_GL_INFO(TYPE::className() << ": disable called but already
set");
+ }
+#ifdef DBG_UTIL
+ checkState();
+#endif
}
+
+#ifdef DBG_UTIL
+ void checkState()
+ {
+ bool bRealState = readState();
+ if (mbTest != bRealState)
+ {
+ VCL_GL_INFO(TYPE::className() << " mismatch! "
+ << "Expected: " << (mbTest ? "enabled" :
"disabled")
+ << " but is: " << (bRealState ? "enabled" :
"disabled"));
+ }
+ }
+#endif
};
-class StencilState
+class ScissorState : public GenericCapabilityState<GL_SCISSOR_TEST,
ScissorState>
{
- bool mbTest;
+private:
+ int mX;
+ int mY;
+ int mWidth;
+ int mHeight;
+
public:
+ static std::string className() { return std::string("ScissorState"); }
- StencilState()
- : mbTest(false)
- {
- glDisable(GL_STENCIL_TEST);
- CHECK_GL_ERROR();
- }
+ ScissorState()
+ : mX(0)
+ , mY(0)
+ , mWidth(0)
+ , mHeight(0)
+ {}
- void enable()
+ void set(int x, int y, int width, int height)
{
- if (!mbTest)
+ if (x != mX || y != mY || width != mWidth || height != mHeight)
{
- glEnable(GL_STENCIL_TEST);
+ glScissor(x, y, width, height);
CHECK_GL_ERROR();
- mbTest = true;
- }
- }
- void disable()
- {
- if (mbTest)
- {
- glDisable(GL_STENCIL_TEST);
- CHECK_GL_ERROR();
- mbTest = false;
+ mX = x;
+ mY = y;
+ mWidth = width;
+ mHeight = height;
}
}
};
+class StencilState : public GenericCapabilityState<GL_STENCIL_TEST,
StencilState>
+{
+public:
+ static std::string className() { return std::string("StencilState"); }
+};
+
class RenderState
{
TextureState maTexture;
@@ -115,6 +130,13 @@ public:
TextureState& texture() { return maTexture; }
ScissorState& scissor() { return maScissor; }
StencilState& stencil() { return maStencil; }
+
+ void sync()
+ {
+ VCL_GL_INFO("RenderState::sync");
+ maScissor.sync();
+ maStencil.sync();
+ }
};
#endif // INCLUDED_VCL_INC_OPENGL_RENDER_STATE_H
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index 3eb72d4..4636e13 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -263,8 +263,6 @@ void OpenGLSalGraphicsImpl::freeResources()
VCL_GL_INFO( "freeResources" );
mpContext->makeCurrent();
FlushDeferredDrawing();
- mpContext->state()->scissor().disable();
- mpContext->state()->stencil().disable();
mpContext->ReleaseFramebuffer( maOffscreenTex );
}
ReleaseContext();
@@ -272,6 +270,7 @@ void OpenGLSalGraphicsImpl::freeResources()
void OpenGLSalGraphicsImpl::ImplSetClipBit( const vcl::Region& rClip, GLuint
nMask )
{
+ mpContext->state()->scissor().disable();
mpContext->state()->stencil().enable();
VCL_GL_INFO( "Adding complex clip / stencil" );
@@ -497,6 +496,10 @@ bool OpenGLSalGraphicsImpl::CheckOffscreenTexture()
// TODO: lfrb: User GL_ARB_copy_image?
OpenGLTexture aNewTex = OpenGLTexture( GetWidth(), GetHeight() );
+
+ mpContext->state()->scissor().disable();
+ mpContext->state()->stencil().disable();
+
mpFramebuffer = mpContext->AcquireFramebuffer( aNewTex );
DrawTexture( maOffscreenTex, aPosAry );
maOffscreenTex = aNewTex;
@@ -2479,9 +2482,6 @@ void OpenGLSalGraphicsImpl::flush()
{
FlushDeferredDrawing();
- mpContext->state()->scissor().disable();
- mpContext->state()->stencil().disable();
-
if( IsOffscreen() )
return;
@@ -2538,6 +2538,8 @@ void OpenGLSalGraphicsImpl::doFlush()
VCL_GL_INFO( "flushAndSwap - acquire default framebuffer" );
+ mpWindowContext->state()->sync();
+
mpWindowContext->AcquireDefaultFramebuffer();
CHECK_GL_ERROR();
diff --git a/vcl/source/opengl/OpenGLContext.cxx
b/vcl/source/opengl/OpenGLContext.cxx
index 69e185e..38a49e5 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -1228,6 +1228,7 @@ void OpenGLContext::reset()
// reset the clip region
maClipRegion.SetEmpty();
+ mpRenderState.reset(new RenderState);
// destroy all framebuffers
if( mpLastFramebuffer )
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