2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/internal/render/gl-resources/native-frame-buffer-texture.h>
22 #include <dali/internal/render/gl-resources/context.h>
23 #include <dali/internal/render/gl-resources/texture-units.h>
24 #include <dali/integration-api/debug.h>
32 NativeFrameBufferTexture::NativeFrameBufferTexture( NativeImageInterfacePtr nativeImage, Context& context)
33 : FrameBufferTexture(nativeImage->GetWidth(),
34 nativeImage->GetHeight(),
36 mNativeImage(nativeImage)
38 DALI_LOG_INFO( Debug::Filter::gImage, Debug::General, "NativeFrameBufferTexture created 0x%x\n", &nativeImage );
41 NativeFrameBufferTexture::~NativeFrameBufferTexture()
43 DALI_LOG_INFO (Debug::Filter::gImage, Debug::General, "NativeFrameBufferTexture destroyed\n");
44 // GlCleanup() should already have been called by TextureCache ensuring the resource is destroyed
45 // on the render thread. (And avoiding a potentially problematic virtual call in the destructor)
48 bool NativeFrameBufferTexture::IsFullyOpaque() const
50 return !HasAlphaChannel();
53 bool NativeFrameBufferTexture::HasAlphaChannel() const
55 return mNativeImage->RequiresBlending();
58 bool NativeFrameBufferTexture::Init()
60 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
62 bool status( true ); // assume success
63 if( mFrameBufferName == 0 )
65 status = CreateGlTexture();
71 bool NativeFrameBufferTexture::CreateGlTexture()
73 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
75 if( mNativeImage->GlExtensionCreate() )
77 mContext.GenTextures(1, &mId);
78 mContext.ActiveTexture( TEXTURE_UNIT_UPLOAD ); // bind in unused unit so rebind works the first time
79 mContext.Bind2dTexture(mId);
81 mContext.PixelStorei(GL_UNPACK_ALIGNMENT, 1); // We always use tightly packed data
83 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
84 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
86 // platform specific implementation decides on what GL extension to use
87 mNativeImage->TargetTexture();
89 // generate frame and render buffer names
90 mContext.GenFramebuffers(1, &mFrameBufferName);
91 mContext.GenRenderbuffers(1, &mRenderBufferName);
93 // Bind render buffer and create 16 depth buffer
94 mContext.BindRenderbuffer(GL_RENDERBUFFER, mRenderBufferName);
95 mContext.RenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, mWidth, mHeight);
99 DALI_LOG_ERROR( "Error creating native image!" );
105 void NativeFrameBufferTexture::GlCleanup()
107 Texture::GlCleanup();
109 if (mFrameBufferName != 0)
111 mContext.DeleteFramebuffers(1, &mFrameBufferName );
112 mFrameBufferName = 0;
115 if (mRenderBufferName != 0)
117 mContext.DeleteRenderbuffers(1, &mRenderBufferName );
118 mRenderBufferName = 0;
121 mNativeImage->GlExtensionDestroy();
123 mNativeImage.Reset();
126 } //namespace Internal