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( NativeImagePtr nativeImage, Context& context)
33 : FrameBufferTexture(nativeImage->GetWidth(),
34 nativeImage->GetHeight(),
35 nativeImage->GetPixelFormat(),
37 mNativeImage(nativeImage)
39 DALI_LOG_INFO( Debug::Filter::gImage, Debug::General, "NativeFrameBufferTexture created 0x%x\n", &nativeImage );
42 NativeFrameBufferTexture::~NativeFrameBufferTexture()
44 DALI_LOG_INFO (Debug::Filter::gImage, Debug::General, "NativeFrameBufferTexture destroyed\n");
45 // GlCleanup() should already have been called by TextureCache ensuring the resource is destroyed
46 // on the render thread. (And avoiding a potentially problematic virtual call in the destructor)
49 bool NativeFrameBufferTexture::IsFullyOpaque() const
51 // TODO - Should test actual texture...
52 return !HasAlphaChannel();
55 bool NativeFrameBufferTexture::HasAlphaChannel() const
57 return Pixel::HasAlpha(mNativeImage->GetPixelFormat());
60 bool NativeFrameBufferTexture::Init()
62 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
64 bool status( true ); // assume success
65 if( mFrameBufferName == 0 )
67 status = CreateGlTexture();
73 bool NativeFrameBufferTexture::CreateGlTexture()
75 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
77 if( mNativeImage->GlExtensionCreate() )
79 mContext.GenTextures(1, &mId);
80 mContext.ActiveTexture( TextureUnitAsGLenum( TEXTURE_UNIT_UPLOAD ) ); // bind in unused unit so rebind works the first time
81 mContext.Bind2dTexture(mId);
83 mContext.PixelStorei(GL_UNPACK_ALIGNMENT, 1); // We always use tightly packed data
85 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
86 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
88 // platform specific implementation decides on what GL extension to use
89 mNativeImage->TargetTexture();
91 // generate frame and render buffer names
92 mContext.GenFramebuffers(1, &mFrameBufferName);
93 mContext.GenRenderbuffers(1, &mRenderBufferName);
95 // Bind render buffer and create 16 depth buffer
96 mContext.BindRenderbuffer(GL_RENDERBUFFER, mRenderBufferName);
97 mContext.RenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, mWidth, mHeight);
101 DALI_LOG_ERROR( "Error creating native image!" );
107 void NativeFrameBufferTexture::GlCleanup()
109 Texture::GlCleanup();
111 if (mFrameBufferName != 0)
113 mContext.DeleteFramebuffers(1, &mFrameBufferName );
114 mFrameBufferName = 0;
117 if (mRenderBufferName != 0)
119 mContext.DeleteRenderbuffers(1, &mRenderBufferName );
120 mRenderBufferName = 0;
123 mNativeImage->GlExtensionDestroy();
125 mNativeImage.Reset();
129 } //namespace Internal