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POtexture problems with librocket, ogre & ios
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2012-08-21T22:23:01.107
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We are trying to use librocket <a href="http://librocket.com/" rel="nofollow">http://librocket.com/</a> together with Ogre <a href="http://www.ogre3d.org/" rel="nofollow">http://www.ogre3d.org/</a>. They're both part of gamekit <a href="http://code.google.com/p/gamekit/" rel="nofollow">http://code.google.com/p/gamekit/</a> which I use for this project. This all works fine together as long as I don't load an image with librocket. As soon as I do that the viewport on the iPad is not fullscreen anymore but small in the lower corner. Like this: <a href="http://uploads.undef.ch/machine/ipad.png" rel="nofollow">http://uploads.undef.ch/machine/ipad.png</a> I can't make a connection between loading/rendering a texture and resizing of the viewport. And I can't find anything wrong with the RenderInterface. <a href="http://uploads.undef.ch/machine/RenderInterfaceOgre3D.cpp" rel="nofollow">http://uploads.undef.ch/machine/RenderInterfaceOgre3D.cpp</a> Is there any OpenGLES command that could have an affect on the active viewport size? This is the relevant code that loads an image and displays it: <pre><code>// Called by Rocket when a texture is required by the library. bool RenderInterfaceOgre3D::LoadTexture(Rocket::Core::TextureHandle& texture_handle, Rocket::Core::Vector2i& texture_dimensions, const Rocket::Core::String& source) { Ogre::TextureManager* texture_manager = Ogre::TextureManager::getSingletonPtr(); Ogre::TexturePtr ogre_texture = texture_manager->getByName(Ogre::String(source.CString())); if (ogre_texture.isNull()) { ogre_texture = texture_manager->load(Ogre::String(source.CString()), DEFAULT_ROCKET_RESOURCE_GROUP, Ogre::TEX_TYPE_2D, 0); } if (ogre_texture.isNull()) return false; texture_dimensions.x = ogre_texture->getWidth(); texture_dimensions.y = ogre_texture->getHeight(); texture_handle = reinterpret_cast<Rocket::Core::TextureHandle>(new RocketOgre3DTexture(ogre_texture)); return true; } // Called by Rocket when it wants to render geometry that it does not wish to optimise. void RenderInterfaceOgre3D::RenderGeometry(Rocket::Core::Vertex* vertices, int num_vertices, int* indices, int num_indices, Rocket::Core::TextureHandle texture, const Rocket::Core::Vector2f& translation) { // We've chosen to not support non-compiled geometry in the Ogre3D renderer. // But if you want, you can uncomment this code, so borders will be shown. /* Rocket::Core::CompiledGeometryHandle gh = CompileGeometry(vertices, num_vertices, indices, num_indices, texture); RenderCompiledGeometry(gh, translation); ReleaseCompiledGeometry(gh); */ } // Called by Rocket when it wants to compile geometry it believes will be static for the forseeable future. Rocket::Core::CompiledGeometryHandle RenderInterfaceOgre3D::CompileGeometry(Rocket::Core::Vertex* vertices, int num_vertices, int* indices, int num_indices, Rocket::Core::TextureHandle texture) { RocketOgre3DCompiledGeometry* geometry = new RocketOgre3DCompiledGeometry(); geometry->texture = texture == NULL ? NULL : (RocketOgre3DTexture*) texture; geometry->render_operation.vertexData = new Ogre::VertexData(); geometry->render_operation.vertexData->vertexStart = 0; geometry->render_operation.vertexData->vertexCount = num_vertices; geometry->render_operation.indexData = new Ogre::IndexData(); geometry->render_operation.indexData->indexStart = 0; geometry->render_operation.indexData->indexCount = num_indices; geometry->render_operation.operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST; // Set up the vertex declaration. Ogre::VertexDeclaration* vertex_declaration = geometry->render_operation.vertexData->vertexDeclaration; size_t element_offset = 0; vertex_declaration->addElement(0, element_offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION); element_offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3); vertex_declaration->addElement(0, element_offset, Ogre::VET_COLOUR, Ogre::VES_DIFFUSE); element_offset += Ogre::VertexElement::getTypeSize(Ogre::VET_COLOUR); vertex_declaration->addElement(0, element_offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES); #if GK_PLATFORM == GK_PLATFORM_APPLE_IOS // Create the vertex buffer. Ogre::HardwareVertexBufferSharedPtr vertex_buffer = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(vertex_declaration->getVertexSize(0), num_vertices, Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE,true); geometry->render_operation.vertexData->vertexBufferBinding->setBinding(0, vertex_buffer); // Fill the vertex buffer. RocketOgre3DVertex* ogre_vertices = (RocketOgre3DVertex*) vertex_buffer->lock(0, vertex_buffer->getSizeInBytes(), Ogre::HardwareBuffer::HBL_DISCARD); #else Ogre::HardwareVertexBufferSharedPtr vertex_buffer = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(vertex_declaration->getVertexSize(0), num_vertices, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); geometry->render_operation.vertexData->vertexBufferBinding->setBinding(0, vertex_buffer); // Fill the vertex buffer. RocketOgre3DVertex* ogre_vertices = (RocketOgre3DVertex*) vertex_buffer->lock(0, vertex_buffer->getSizeInBytes(), Ogre::HardwareBuffer::HBL_NORMAL); #endif for (int i = 0; i < num_vertices; ++i) { ogre_vertices[i].x = vertices[i].position.x; ogre_vertices[i].y = vertices[i].position.y; ogre_vertices[i].z = 0; Ogre::ColourValue diffuse(vertices[i].colour.red / 255.0f, vertices[i].colour.green / 255.0f, vertices[i].colour.blue / 255.0f, vertices[i].colour.alpha / 255.0f); render_system->convertColourValue(diffuse, &ogre_vertices[i].diffuse); ogre_vertices[i].u = vertices[i].tex_coord[0]; ogre_vertices[i].v = vertices[i].tex_coord[1]; } vertex_buffer->unlock(); #if GK_PLATFORM == GK_PLATFORM_APPLE_IOS // Create the index buffer. Ogre::HardwareIndexBufferSharedPtr index_buffer = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, num_indices, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); geometry->render_operation.indexData->indexBuffer = index_buffer; geometry->render_operation.useIndexes = true; #else Ogre::HardwareIndexBufferSharedPtr index_buffer = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(Ogre::HardwareIndexBuffer::IT_32BIT, num_indices, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); geometry->render_operation.indexData->indexBuffer = index_buffer; geometry->render_operation.useIndexes = true; #endif // Fill the index buffer. unsigned short * ogre_indices = (unsigned short*)index_buffer->lock(0, index_buffer->getSizeInBytes(), Ogre::HardwareBuffer::HBL_NORMAL); #if GK_PLATFORM == GK_PLATFORM_APPLE_IOS //unsigned short short_indices[num_indices]; for(int i=0;i<num_indices;i++) ogre_indices[i] = indices[i]; //memcpy(ogre_indices, short_indices, sizeof(unsigned short) * num_indices); #else memcpy(ogre_indices, indices, sizeof(unsigned int) * num_indices); #endif index_buffer->unlock(); return reinterpret_cast<Rocket::Core::CompiledGeometryHandle>(geometry); } // Called by Rocket when it wants to render application-compiled geometry. void RenderInterfaceOgre3D::RenderCompiledGeometry(Rocket::Core::CompiledGeometryHandle geometry, const Rocket::Core::Vector2f& translation) { Ogre::Matrix4 transform; transform.makeTrans(translation.x, translation.y, 0); render_system->_setWorldMatrix(transform); render_system = Ogre::Root::getSingleton().getRenderSystem(); RocketOgre3DCompiledGeometry* ogre3d_geometry = (RocketOgre3DCompiledGeometry*) geometry; if (ogre3d_geometry->texture != NULL) { render_system->_setTexture(0, true, ogre3d_geometry->texture->texture); // Ogre can change the blending modes when textures are disabled - so in case the last render had no texture, // we need to re-specify them. render_system->_setTextureBlendMode(0, colour_blend_mode); render_system->_setTextureBlendMode(0, alpha_blend_mode); } else render_system->_disableTextureUnit(0); render_system->_render(ogre3d_geometry->render_operation); } </code></pre>
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<c++><ios><gamekit><ogre><librocket>
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texture problems with librocket, ogre & ios
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1. COIt looks like the size of my viewport is the same as the one of my texture.
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2. COok.I was able to kind of solve this issue for now. But I still don't know why it happened. Somehow the viewport got messed up. So Now I call this in every frame to restore the original one: rs->_getViewport()->_updateDimensions(); rs->_setViewport(rs->_getViewport());
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