EOL" discard;"
EOL" }";
+//! Output color and coverage for accumulation by OIT algorithm.
+const char THE_FRAG_write_oit_buffers[] =
+ EOL" float aWeight = occFragColor.a * clamp (1e+2 * pow (1.0 - gl_FragCoord.z * occOitDepthFactor, 3.0), 1e-2, 1e+2);"
+ EOL" occFragCoverage.r = occFragColor.a * aWeight;"
+ EOL" occFragColor = vec4 (occFragColor.rgb * occFragColor.a * aWeight, occFragColor.a);";
+
+#if !defined(GL_ES_VERSION_2_0)
+
+ static const GLfloat THE_DEFAULT_AMBIENT[4] = { 0.0f, 0.0f, 0.0f, 1.0f };
+ static const GLfloat THE_DEFAULT_SPOT_DIR[3] = { 0.0f, 0.0f, -1.0f };
+ static const GLfloat THE_DEFAULT_SPOT_EXPONENT = 0.0f;
+ static const GLfloat THE_DEFAULT_SPOT_CUTOFF = 180.0f;
+
+ //! Bind FFP light source.
+ static void bindLight (const OpenGl_Light& theLight,
+ const GLenum theLightGlId,
+ const OpenGl_Mat4& theModelView,
+ OpenGl_Context* theCtx)
+ {
+ // the light is a headlight?
+ if (theLight.IsHeadlight)
+ {
+ theCtx->core11->glMatrixMode (GL_MODELVIEW);
+ theCtx->core11->glLoadIdentity();
+ }
+
+ // setup light type
+ switch (theLight.Type)
+ {
+ case Graphic3d_TOLS_AMBIENT : break; // handled by separate if-clause at beginning of method
+ case Graphic3d_TOLS_DIRECTIONAL:
+ {
+ // if the last parameter of GL_POSITION, is zero, the corresponding light source is a Directional one
+ const OpenGl_Vec4 anInfDir = -theLight.Direction;
+
+ // to create a realistic effect, set the GL_SPECULAR parameter to the same value as the GL_DIFFUSE.
+ theCtx->core11->glLightfv (theLightGlId, GL_AMBIENT, THE_DEFAULT_AMBIENT);
+ theCtx->core11->glLightfv (theLightGlId, GL_DIFFUSE, theLight.Color.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_SPECULAR, theLight.Color.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_POSITION, anInfDir.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_SPOT_DIRECTION, THE_DEFAULT_SPOT_DIR);
+ theCtx->core11->glLightf (theLightGlId, GL_SPOT_EXPONENT, THE_DEFAULT_SPOT_EXPONENT);
+ theCtx->core11->glLightf (theLightGlId, GL_SPOT_CUTOFF, THE_DEFAULT_SPOT_CUTOFF);
+ break;
+ }
+ case Graphic3d_TOLS_POSITIONAL:
+ {
+ // to create a realistic effect, set the GL_SPECULAR parameter to the same value as the GL_DIFFUSE
+ const OpenGl_Vec4 aPosition (static_cast<float>(theLight.Position.x()), static_cast<float>(theLight.Position.y()), static_cast<float>(theLight.Position.z()), 1.0f);
+ theCtx->core11->glLightfv (theLightGlId, GL_AMBIENT, THE_DEFAULT_AMBIENT);
+ theCtx->core11->glLightfv (theLightGlId, GL_DIFFUSE, theLight.Color.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_SPECULAR, theLight.Color.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_POSITION, aPosition.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_SPOT_DIRECTION, THE_DEFAULT_SPOT_DIR);
+ theCtx->core11->glLightf (theLightGlId, GL_SPOT_EXPONENT, THE_DEFAULT_SPOT_EXPONENT);
+ theCtx->core11->glLightf (theLightGlId, GL_SPOT_CUTOFF, THE_DEFAULT_SPOT_CUTOFF);
+ theCtx->core11->glLightf (theLightGlId, GL_CONSTANT_ATTENUATION, theLight.ConstAttenuation());
+ theCtx->core11->glLightf (theLightGlId, GL_LINEAR_ATTENUATION, theLight.LinearAttenuation());
+ theCtx->core11->glLightf (theLightGlId, GL_QUADRATIC_ATTENUATION, 0.0);
+ break;
+ }
+ case Graphic3d_TOLS_SPOT:
+ {
+ const OpenGl_Vec4 aPosition (static_cast<float>(theLight.Position.x()), static_cast<float>(theLight.Position.y()), static_cast<float>(theLight.Position.z()), 1.0f);
+ theCtx->core11->glLightfv (theLightGlId, GL_AMBIENT, THE_DEFAULT_AMBIENT);
+ theCtx->core11->glLightfv (theLightGlId, GL_DIFFUSE, theLight.Color.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_SPECULAR, theLight.Color.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_POSITION, aPosition.GetData());
+ theCtx->core11->glLightfv (theLightGlId, GL_SPOT_DIRECTION, theLight.Direction.GetData());
+ theCtx->core11->glLightf (theLightGlId, GL_SPOT_EXPONENT, theLight.Concentration() * 128.0f);
+ theCtx->core11->glLightf (theLightGlId, GL_SPOT_CUTOFF, (theLight.Angle() * 180.0f) / GLfloat(M_PI));
+ theCtx->core11->glLightf (theLightGlId, GL_CONSTANT_ATTENUATION, theLight.ConstAttenuation());
+ theCtx->core11->glLightf (theLightGlId, GL_LINEAR_ATTENUATION, theLight.LinearAttenuation());
+ theCtx->core11->glLightf (theLightGlId, GL_QUADRATIC_ATTENUATION, 0.0f);
+ break;
+ }
+ }
+
+ // restore matrix in case of headlight
+ if (theLight.IsHeadlight)
+ {
+ theCtx->core11->glLoadMatrixf (theModelView.GetData());
+ }
+
+ glEnable (theLightGlId);
+ }
+#endif
+
}
// =======================================================================
// purpose : Creates new empty shader manager
// =======================================================================
OpenGl_ShaderManager::OpenGl_ShaderManager (OpenGl_Context* theContext)
-: myShadingModel (Graphic3d_TOSM_VERTEX),
+: myFfpProgram (new OpenGl_ShaderProgramFFP()),
+ myShadingModel (Graphic3d_TOSM_VERTEX),
myContext (theContext),
myHasLocalOrigin (Standard_False),
myLastView (NULL)
myWorldViewState.Update();
}
-// =======================================================================
-// function : LightSourceState
-// purpose : Returns current state of OCCT light sources
-// =======================================================================
-const OpenGl_LightSourceState& OpenGl_ShaderManager::LightSourceState() const
-{
- return myLightSourceState;
-}
-
-// =======================================================================
-// function : ProjectionState
-// purpose : Returns current state of OCCT projection transform
-// =======================================================================
-const OpenGl_ProjectionState& OpenGl_ShaderManager::ProjectionState() const
-{
- return myProjectionState;
-}
-
-// =======================================================================
-// function : ModelWorldState
-// purpose : Returns current state of OCCT model-world transform
-// =======================================================================
-const OpenGl_ModelWorldState& OpenGl_ShaderManager::ModelWorldState() const
-{
- return myModelWorldState;
-}
-
-// =======================================================================
-// function : WorldViewState
-// purpose : Returns current state of OCCT world-view transform
-// =======================================================================
-const OpenGl_WorldViewState& OpenGl_ShaderManager::WorldViewState() const
-{
- return myWorldViewState;
-}
-
// =======================================================================
// function : PushLightSourceState
// purpose : Pushes state of OCCT light sources to the program
// =======================================================================
void OpenGl_ShaderManager::PushLightSourceState (const Handle(OpenGl_ShaderProgram)& theProgram) const
{
- if (myLightSourceState.Index() == theProgram->ActiveState (OpenGl_LIGHT_SOURCES_STATE)
- || !theProgram->IsValid())
+ if (myLightSourceState.Index() == theProgram->ActiveState (OpenGl_LIGHT_SOURCES_STATE))
{
return;
}
+ theProgram->UpdateState (OpenGl_LIGHT_SOURCES_STATE, myLightSourceState.Index());
+ if (theProgram == myFfpProgram)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->core11 == NULL)
+ {
+ return;
+ }
+
+ if (myContext->core11 != NULL)
+ {
+ GLenum aLightGlId = GL_LIGHT0;
+ OpenGl_Vec4 anAmbient (0.0f, 0.0f, 0.0f, 0.0f);
+ const OpenGl_Mat4 aModelView = myWorldViewState.WorldViewMatrix() * myModelWorldState.ModelWorldMatrix();
+ for (OpenGl_ListOfLight::Iterator aLightIt (*myLightSourceState.LightSources()); aLightIt.More(); aLightIt.Next())
+ {
+ const OpenGl_Light& aLight = aLightIt.Value();
+ if (aLight.Type == Graphic3d_TOLS_AMBIENT)
+ {
+ anAmbient += aLight.Color;
+ continue;
+ }
+ else if (aLightGlId > GL_LIGHT7) // OpenGLMaxLights - only 8 lights in OpenGL...
+ {
+ continue;
+ }
+
+ bindLight (aLightIt.Value(), aLightGlId, aModelView, myContext);
+ ++aLightGlId;
+ }
+
+ // apply accumulated ambient color
+ anAmbient.a() = 1.0f;
+ myContext->core11->glLightModelfv (GL_LIGHT_MODEL_AMBIENT, anAmbient.GetData());
+
+ // GL_LIGHTING is managed by drawers to switch between shaded / no lighting output,
+ // therefore managing the state here does not have any effect - do it just for consistency.
+ if (aLightGlId != GL_LIGHT0)
+ {
+ ::glEnable (GL_LIGHTING);
+ }
+ else
+ {
+ ::glDisable (GL_LIGHTING);
+ }
+ // switch off unused lights
+ for (; aLightGlId <= GL_LIGHT7; ++aLightGlId)
+ {
+ ::glDisable (aLightGlId);
+ }
+ }
+ #endif
+ return;
+ }
+
for (Standard_Integer aLightIt = 0; aLightIt < OpenGLMaxLights; ++aLightIt)
{
myLightTypeArray[aLightIt].Type = -1;
theProgram->GetStateLocation (OpenGl_OCC_LIGHT_SOURCE_TYPES),
OpenGLMaxLights * OpenGl_ShaderLightType::NbOfVec2i(),
myLightTypeArray[0].Packed());
- theProgram->UpdateState (OpenGl_LIGHT_SOURCES_STATE, myLightSourceState.Index());
return;
}
aLightsNb * OpenGl_ShaderLightParameters::NbOfVec4(),
myLightParamsArray[0].Packed());
}
-
- theProgram->UpdateState (OpenGl_LIGHT_SOURCES_STATE, myLightSourceState.Index());
}
// =======================================================================
return;
}
+ theProgram->UpdateState (OpenGl_PROJECTION_STATE, myProjectionState.Index());
+ if (theProgram == myFfpProgram)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->core11 != NULL)
+ {
+ myContext->core11->glMatrixMode (GL_PROJECTION);
+ myContext->core11->glLoadMatrixf (myProjectionState.ProjectionMatrix());
+ }
+ #endif
+ return;
+ }
+
theProgram->SetUniform (myContext,
theProgram->GetStateLocation (OpenGl_OCC_PROJECTION_MATRIX),
myProjectionState.ProjectionMatrix());
{
theProgram->SetUniform (myContext, aLocation, myProjectionState.ProjectionMatrixInverse(), true);
}
-
- theProgram->UpdateState (OpenGl_PROJECTION_STATE, myProjectionState.Index());
}
// =======================================================================
return;
}
+ theProgram->UpdateState (OpenGl_MODEL_WORLD_STATE, myModelWorldState.Index());
+ if (theProgram == myFfpProgram)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->core11 != NULL)
+ {
+ const OpenGl_Mat4 aModelView = myWorldViewState.WorldViewMatrix() * myModelWorldState.ModelWorldMatrix();
+ myContext->core11->glMatrixMode (GL_MODELVIEW);
+ myContext->core11->glLoadMatrixf (aModelView.GetData());
+ theProgram->UpdateState (OpenGl_WORLD_VIEW_STATE, myWorldViewState.Index());
+ }
+ #endif
+ return;
+ }
+
theProgram->SetUniform (myContext,
theProgram->GetStateLocation (OpenGl_OCC_MODEL_WORLD_MATRIX),
myModelWorldState.ModelWorldMatrix());
{
theProgram->SetUniform (myContext, aLocation, myModelWorldState.ModelWorldMatrixInverse(), true);
}
-
- theProgram->UpdateState (OpenGl_MODEL_WORLD_STATE, myModelWorldState.Index());
}
// =======================================================================
return;
}
+ theProgram->UpdateState (OpenGl_WORLD_VIEW_STATE, myWorldViewState.Index());
+ if (theProgram == myFfpProgram)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->core11 != NULL)
+ {
+ const OpenGl_Mat4 aModelView = myWorldViewState.WorldViewMatrix() * myModelWorldState.ModelWorldMatrix();
+ myContext->core11->glMatrixMode (GL_MODELVIEW);
+ myContext->core11->glLoadMatrixf (aModelView.GetData());
+ theProgram->UpdateState (OpenGl_MODEL_WORLD_STATE, myModelWorldState.Index());
+ }
+ #endif
+ return;
+ }
+
theProgram->SetUniform (myContext,
theProgram->GetStateLocation (OpenGl_OCC_WORLD_VIEW_MATRIX),
myWorldViewState.WorldViewMatrix());
{
theProgram->SetUniform (myContext, aLocation, myWorldViewState.WorldViewMatrixInverse(), true);
}
-
- theProgram->UpdateState (OpenGl_WORLD_VIEW_STATE, myWorldViewState.Index());
}
// =======================================================================
}
theProgram->UpdateState (OpenGl_CLIP_PLANES_STATE, myClippingState.Index());
+ if (theProgram == myFfpProgram)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->core11 == NULL)
+ {
+ return;
+ }
+
+ const Standard_Integer aNbMaxPlanes = Min (myContext->MaxClipPlanes(), THE_MAX_CLIP_PLANES);
+ OpenGl_Vec4d anEquations[THE_MAX_CLIP_PLANES];
+ Standard_Integer aPlaneId = 0;
+ Standard_Boolean toRestoreModelView = Standard_False;
+ for (OpenGl_ClippingIterator aPlaneIter (myContext->Clipping()); aPlaneIter.More(); aPlaneIter.Next())
+ {
+ const Handle(Graphic3d_ClipPlane)& aPlane = aPlaneIter.Value();
+ if (aPlaneIter.IsDisabled())
+ {
+ continue;
+ }
+ else if (aPlaneId >= aNbMaxPlanes)
+ {
+ myContext->PushMessage (GL_DEBUG_SOURCE_APPLICATION,
+ GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_MEDIUM,
+ TCollection_ExtendedString("Warning: clipping planes limit (") + aNbMaxPlanes + ") has been exceeded.");
+ break;
+ }
+
+ const Graphic3d_ClipPlane::Equation& anEquation = aPlane->GetEquation();
+ OpenGl_Vec4d& aPlaneEq = anEquations[aPlaneId];
+ aPlaneEq.x() = anEquation.x();
+ aPlaneEq.y() = anEquation.y();
+ aPlaneEq.z() = anEquation.z();
+ aPlaneEq.w() = anEquation.w();
+ if (myHasLocalOrigin)
+ {
+ const gp_XYZ aPos = aPlane->ToPlane().Position().Location().XYZ() - myLocalOrigin;
+ const Standard_Real aD = -(anEquation.x() * aPos.X() + anEquation.y() * aPos.Y() + anEquation.z() * aPos.Z());
+ aPlaneEq.w() = aD;
+ }
+
+ const GLenum anFfpPlaneID = GL_CLIP_PLANE0 + aPlaneId;
+ if (anFfpPlaneID == GL_CLIP_PLANE0)
+ {
+ // set either identity or pure view matrix
+ toRestoreModelView = Standard_True;
+ myContext->core11->glMatrixMode (GL_MODELVIEW);
+ myContext->core11->glLoadMatrixf (myWorldViewState.WorldViewMatrix().GetData());
+ }
+
+ ::glEnable (anFfpPlaneID);
+ myContext->core11->glClipPlane (anFfpPlaneID, aPlaneEq);
+
+ ++aPlaneId;
+ }
+
+ // switch off unused lights
+ for (; aPlaneId < aNbMaxPlanes; ++aPlaneId)
+ {
+ ::glDisable (GL_CLIP_PLANE0 + aPlaneId);
+ }
+
+ // restore combined model-view matrix
+ if (toRestoreModelView)
+ {
+ const OpenGl_Mat4 aModelView = myWorldViewState.WorldViewMatrix() * myModelWorldState.ModelWorldMatrix();
+ myContext->core11->glLoadMatrixf (aModelView.GetData());
+ }
+ #endif
+ return;
+ }
+
const GLint aLocEquations = theProgram->GetStateLocation (OpenGl_OCC_CLIP_PLANE_EQUATIONS);
if (aLocEquations == OpenGl_ShaderProgram::INVALID_LOCATION)
{
theProgram->SetUniform (myContext, aLocEquations, THE_MAX_CLIP_PLANES, anEquations);
}
+// =======================================================================
+// function : PushMaterialState
+// purpose :
+// =======================================================================
+void OpenGl_ShaderManager::PushMaterialState (const Handle(OpenGl_ShaderProgram)& theProgram) const
+{
+ if (myMaterialState.Index() == theProgram->ActiveState (OpenGl_MATERIAL_STATE))
+ {
+ return;
+ }
+
+ const OpenGl_Material& aFrontMat = myMaterialState.FrontMaterial();
+ const OpenGl_Material& aBackMat = myMaterialState.BackMaterial();
+ theProgram->UpdateState (OpenGl_MATERIAL_STATE, myMaterialState.Index());
+ if (theProgram == myFfpProgram)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->core11 == NULL)
+ {
+ return;
+ }
+
+ const GLenum aFrontFace = myMaterialState.ToDistinguish() ? GL_FRONT : GL_FRONT_AND_BACK;
+ myContext->core11->glMaterialfv(aFrontFace, GL_AMBIENT, aFrontMat.Ambient.GetData());
+ myContext->core11->glMaterialfv(aFrontFace, GL_DIFFUSE, aFrontMat.Diffuse.GetData());
+ myContext->core11->glMaterialfv(aFrontFace, GL_SPECULAR, aFrontMat.Specular.GetData());
+ myContext->core11->glMaterialfv(aFrontFace, GL_EMISSION, aFrontMat.Emission.GetData());
+ myContext->core11->glMaterialf (aFrontFace, GL_SHININESS, aFrontMat.Shine());
+ if (myMaterialState.ToDistinguish())
+ {
+ myContext->core11->glMaterialfv(GL_BACK, GL_AMBIENT, aBackMat.Ambient.GetData());
+ myContext->core11->glMaterialfv(GL_BACK, GL_DIFFUSE, aBackMat.Diffuse.GetData());
+ myContext->core11->glMaterialfv(GL_BACK, GL_SPECULAR, aBackMat.Specular.GetData());
+ myContext->core11->glMaterialfv(GL_BACK, GL_EMISSION, aBackMat.Emission.GetData());
+ myContext->core11->glMaterialf (GL_BACK, GL_SHININESS, aBackMat.Shine());
+ }
+ #endif
+ return;
+ }
+
+ theProgram->SetUniform (myContext,
+ theProgram->GetStateLocation (OpenGl_OCCT_TEXTURE_ENABLE),
+ myMaterialState.ToMapTexture() ? 1 : 0);
+ theProgram->SetUniform (myContext,
+ theProgram->GetStateLocation (OpenGl_OCCT_DISTINGUISH_MODE),
+ myMaterialState.ToDistinguish() ? 1 : 0);
+
+ const GLint aLocFront = theProgram->GetStateLocation (OpenGl_OCCT_FRONT_MATERIAL);
+ if (aLocFront != OpenGl_ShaderProgram::INVALID_LOCATION)
+ {
+ theProgram->SetUniform (myContext, aLocFront, OpenGl_Material::NbOfVec4(),
+ aFrontMat.Packed());
+ }
+
+ const GLint aLocBack = theProgram->GetStateLocation (OpenGl_OCCT_BACK_MATERIAL);
+ if (aLocBack != OpenGl_ShaderProgram::INVALID_LOCATION)
+ {
+ theProgram->SetUniform (myContext, aLocBack, OpenGl_Material::NbOfVec4(),
+ aBackMat.Packed());
+ }
+}
+
+// =======================================================================
+// function : PushOitState
+// purpose : Pushes state of OIT uniforms to the specified program
+// =======================================================================
+void OpenGl_ShaderManager::PushOitState (const Handle(OpenGl_ShaderProgram)& theProgram) const
+{
+ if (!theProgram->IsValid())
+ {
+ return;
+ }
+
+ if (myOitState.Index() == theProgram->ActiveState (OpenGL_OIT_STATE))
+ {
+ return;
+ }
+
+ const GLint aLocOutput = theProgram->GetStateLocation (OpenGl_OCCT_OIT_OUTPUT);
+ if (aLocOutput != OpenGl_ShaderProgram::INVALID_LOCATION)
+ {
+ theProgram->SetUniform (myContext, aLocOutput, myOitState.ToEnableWrite());
+ }
+
+ const GLint aLocDepthFactor = theProgram->GetStateLocation (OpenGl_OCCT_OIT_DEPTH_FACTOR);
+ if (aLocDepthFactor != OpenGl_ShaderProgram::INVALID_LOCATION)
+ {
+ theProgram->SetUniform (myContext, aLocDepthFactor, myOitState.DepthFactor());
+ }
+}
+
// =======================================================================
// function : PushState
// purpose : Pushes state of OCCT graphics parameters to the program
// =======================================================================
void OpenGl_ShaderManager::PushState (const Handle(OpenGl_ShaderProgram)& theProgram) const
{
- PushClippingState (theProgram);
- PushWorldViewState (theProgram);
- PushModelWorldState (theProgram);
- PushProjectionState (theProgram);
- PushLightSourceState (theProgram);
+ const Handle(OpenGl_ShaderProgram)& aProgram = !theProgram.IsNull() ? theProgram : myFfpProgram;
+ PushClippingState (aProgram);
+ PushWorldViewState (aProgram);
+ PushModelWorldState (aProgram);
+ PushProjectionState (aProgram);
+ PushLightSourceState (aProgram);
+ PushMaterialState (aProgram);
+ PushOitState (aProgram);
}
// =======================================================================
{
aProgramSrc->SetHeader ("#version 150");
}
+#else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
#endif
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));
return Standard_True;
}
+// =======================================================================
+// function : prepareStdProgramOitCompositing
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_ShaderManager::prepareStdProgramOitCompositing (const Standard_Boolean theMsaa)
+{
+ Handle(OpenGl_ShaderProgram)& aProgram = myOitCompositingProgram[theMsaa ? 1 : 0];
+ Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
+ TCollection_AsciiString aSrcVert, aSrcFrag;
+
+ aSrcVert =
+ EOL"THE_SHADER_OUT vec2 TexCoord;"
+ EOL"void main()"
+ EOL"{"
+ EOL" TexCoord = occVertex.zw;"
+ EOL" gl_Position = vec4 (occVertex.x, occVertex.y, 0.0, 1.0);"
+ EOL"}";
+
+ if (!theMsaa)
+ {
+ aSrcFrag =
+ EOL"uniform sampler2D uAccumTexture;"
+ EOL"uniform sampler2D uWeightTexture;"
+ EOL
+ EOL"THE_SHADER_IN vec2 TexCoord;"
+ EOL
+ EOL"void main()"
+ EOL"{"
+ EOL" vec4 aAccum = occTexture2D (uAccumTexture, TexCoord);"
+ EOL" float aWeight = occTexture2D (uWeightTexture, TexCoord).r;"
+ EOL" occFragColor = vec4 (aAccum.rgb / max (aWeight, 0.00001), aAccum.a);"
+ EOL"}";
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->IsGlGreaterEqual (3, 2))
+ {
+ aProgramSrc->SetHeader ("#version 150");
+ }
+ #else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
+ #endif
+ }
+ else
+ {
+ aSrcFrag =
+ EOL"uniform sampler2DMS uAccumTexture;"
+ EOL"uniform sampler2DMS uWeightTexture;"
+ EOL
+ EOL"THE_SHADER_IN vec2 TexCoord;"
+ EOL
+ EOL"void main()"
+ EOL"{"
+ EOL" ivec2 aTexel = ivec2 (textureSize (uAccumTexture) * TexCoord);"
+ EOL" vec4 aAccum = texelFetch (uAccumTexture, aTexel, gl_SampleID);"
+ EOL" float aWeight = texelFetch (uWeightTexture, aTexel, gl_SampleID).r;"
+ EOL" occFragColor = vec4 (aAccum.rgb / max (aWeight, 0.00001), aAccum.a);"
+ EOL"}";
+ #if !defined(GL_ES_VERSION_2_0)
+ if (myContext->IsGlGreaterEqual (4, 0))
+ {
+ aProgramSrc->SetHeader ("#version 400");
+ }
+ #else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
+ #endif
+ }
+
+ aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
+ aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));
+ TCollection_AsciiString aKey;
+ if (!Create (aProgramSrc, aKey, aProgram))
+ {
+ aProgram = new OpenGl_ShaderProgram(); // just mark as invalid
+ return Standard_False;
+ }
+
+ myContext->BindProgram (aProgram);
+ aProgram->SetSampler (myContext, "uAccumTexture", 0);
+ aProgram->SetSampler (myContext, "uWeightTexture", 1);
+ myContext->BindProgram (Handle(OpenGl_ShaderProgram)());
+ return Standard_True;
+}
+
// =======================================================================
// function : pointSpriteAlphaSrc
// purpose :
const Standard_Integer theBits)
{
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
- TCollection_AsciiString aSrcVert, aSrcVertExtraOut, aSrcVertExtraMain, aSrcVertExtraFunc, aSrcGetAlpha, aSrcFrag, aSrcFragExtraOut, aSrcFragExtraMain;
+ TCollection_AsciiString aSrcVert, aSrcVertExtraOut, aSrcVertExtraMain, aSrcVertExtraFunc, aSrcGetAlpha;
+ TCollection_AsciiString aSrcFrag, aSrcFragExtraOut, aSrcFragExtraMain, aSrcFragWriteOit;
TCollection_AsciiString aSrcFragGetColor = EOL"vec4 getColor(void) { return occColor; }";
TCollection_AsciiString aSrcFragMainGetColor = EOL" occFragColor = getColor();";
if ((theBits & OpenGl_PO_Point) != 0)
aSrcFragExtraMain += THE_FRAG_CLIP_PLANES_N;
}
}
+ if ((theBits & OpenGl_PO_WriteOit) != 0)
+ {
+ aSrcFragWriteOit += THE_FRAG_write_oit_buffers;
+ }
TCollection_AsciiString aSrcVertEndMain;
if ((theBits & OpenGl_PO_StippleLine) != 0)
#if defined(GL_ES_VERSION_2_0)
if (myContext->IsGlGreaterEqual (3, 0))
{
- aProgramSrc->SetHeader ("#version 300 es");
hasGlslBitOps = true;
}
#else
EOL"{"
+ aSrcFragExtraMain
+ aSrcFragMainGetColor
+ + aSrcFragWriteOit
+ EOL"}";
#if !defined(GL_ES_VERSION_2_0)
{
aProgramSrc->SetHeader ("#version 150");
}
+#else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
#endif
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));
const Standard_Integer theBits)
{
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
- TCollection_AsciiString aSrcVert, aSrcVertColor, aSrcVertExtraOut, aSrcVertExtraMain, aSrcFrag, aSrcFragExtraOut, aSrcFragExtraMain;
+ TCollection_AsciiString aSrcVert, aSrcVertColor, aSrcVertExtraOut, aSrcVertExtraMain;
+ TCollection_AsciiString aSrcFrag, aSrcFragExtraOut, aSrcFragExtraMain, aSrcFragWriteOit;
TCollection_AsciiString aSrcFragGetColor = EOL"vec4 getColor(void) { return gl_FrontFacing ? FrontColor : BackColor; }";
if ((theBits & OpenGl_PO_Point) != 0)
{
aSrcFragExtraMain += THE_FRAG_CLIP_PLANES_N;
}
}
+ if ((theBits & OpenGl_PO_WriteOit) != 0)
+ {
+ aSrcFragWriteOit += THE_FRAG_write_oit_buffers;
+ }
const TCollection_AsciiString aLights = stdComputeLighting ((theBits & OpenGl_PO_VertColor) != 0);
aSrcVert = TCollection_AsciiString()
EOL"{"
+ aSrcFragExtraMain
+ EOL" occFragColor = getColor();"
- EOL"}";
+ + aSrcFragWriteOit
+ + EOL"}";
#if !defined(GL_ES_VERSION_2_0)
if (myContext->core32 != NULL)
{
aProgramSrc->SetHeader ("#version 150");
}
+#else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
#endif
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));
#define thePhongCompLight "computeLighting (normalize (Normal), normalize (View), Position, gl_FrontFacing)"
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
- TCollection_AsciiString aSrcVert, aSrcVertExtraOut, aSrcVertExtraMain, aSrcFrag, aSrcFragExtraOut, aSrcFragGetVertColor, aSrcFragExtraMain;
+ TCollection_AsciiString aSrcVert, aSrcVertExtraOut, aSrcVertExtraMain;
+ TCollection_AsciiString aSrcFrag, aSrcFragExtraOut, aSrcFragGetVertColor, aSrcFragExtraMain, aSrcFragWriteOit;
TCollection_AsciiString aSrcFragGetColor = EOL"vec4 getColor(void) { return " thePhongCompLight "; }";
if ((theBits & OpenGl_PO_Point) != 0)
{
aSrcFragExtraMain += THE_FRAG_CLIP_PLANES_N;
}
}
+ if ((theBits & OpenGl_PO_WriteOit) != 0)
+ {
+ aSrcFragWriteOit += THE_FRAG_write_oit_buffers;
+ }
aSrcVert = TCollection_AsciiString()
+ THE_FUNC_transformNormal
EOL"{"
+ aSrcFragExtraMain
+ EOL" occFragColor = getColor();"
- EOL"}";
+ + aSrcFragWriteOit
+ + EOL"}";
#if !defined(GL_ES_VERSION_2_0)
if (myContext->core32 != NULL)
{
aProgramSrc->SetHeader ("#version 150");
}
+#else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
#endif
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));
{
aProgramSrc->SetHeader ("#version 150");
}
+#else
+ if (myContext->IsGlGreaterEqual (3, 0))
+ {
+ aProgramSrc->SetHeader ("#version 300 es");
+ }
#endif
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
// =======================================================================
Standard_Boolean OpenGl_ShaderManager::bindProgramWithState (const Handle(OpenGl_ShaderProgram)& theProgram)
{
- if (!myContext->BindProgram (theProgram))
+ const Standard_Boolean isBound = myContext->BindProgram (theProgram);
+ if (isBound
+ && !theProgram.IsNull())
{
- return Standard_False;
+ theProgram->ApplyVariables (myContext);
}
- theProgram->ApplyVariables (myContext);
-
PushState (theProgram);
- return Standard_True;
+ return isBound;
}
projects / occt.git / blobdiff