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/bitmap-texture.h>
22 #include <dali/integration-api/debug.h>
23 #include <dali/internal/render/common/vertex.h>
24 #include <dali/internal/render/common/performance-monitor.h>
25 #include <dali/internal/render/gl-resources/context.h>
26 #include <dali/internal/render/gl-resources/texture-units.h>
34 BitmapTexture::BitmapTexture(
35 Integration::Bitmap* const bitmap,
36 const Integration::Bitmap::PackedPixelsProfile * const bitmapPackedPixelsProfile,
38 ResourcePolicy::Discardable policy)
40 bitmapPackedPixelsProfile->GetBufferWidth(),
41 bitmapPackedPixelsProfile->GetBufferHeight(),
42 bitmap->GetImageWidth(),
43 bitmap->GetImageHeight(),
44 bitmap->GetPixelFormat()),
47 mDiscardPolicy(policy)
49 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
50 DALI_LOG_SET_OBJECT_STRING(this, DALI_LOG_GET_OBJECT_STRING(bitmap));
53 BitmapTexture::BitmapTexture(
56 Pixel::Format pixelFormat,
59 ResourcePolicy::Discardable policy)
65 mClearPixels(clearPixels),
66 mDiscardPolicy(policy)
68 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
71 BitmapTexture::~BitmapTexture()
73 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
75 // GlCleanup() should already have been called by TextureCache ensuring the resource is destroyed
76 // on the render thread. (And avoiding a potentially problematic virtual call in the destructor)
79 bool BitmapTexture::HasAlphaChannel() const
81 return Pixel::HasAlpha(mPixelFormat);
84 bool BitmapTexture::IsFullyOpaque() const
88 return mBitmap->IsFullyOpaque();
92 return ! HasAlphaChannel(); // Todo: amalgamate updated bitmap's IsFullyOpaque()
96 // Bitmap buffer has been changed. Upload changes to GPU.
97 void BitmapTexture::AreaUpdated( const RectArea& updateArea, const unsigned char* pixels )
99 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
100 DALI_LOG_INFO(Debug::Filter::gGLResource, Debug::Verbose, "BitmapTexture::AreaUpdated()\n");
102 GLenum pixelFormat = GL_RGBA;
103 GLenum pixelDataType = GL_UNSIGNED_BYTE;
104 Integration::ConvertToGlFormat(mPixelFormat, pixelDataType, pixelFormat);
106 mContext.ActiveTexture( TEXTURE_UNIT_UPLOAD );
108 mContext.Bind2dTexture(mId);
110 if( ! updateArea.IsEmpty() )
112 mContext.PixelStorei( GL_UNPACK_ALIGNMENT, 1 ); // We always use tightly packed data
113 DALI_LOG_INFO( Debug::Filter::gImage, Debug::General, "Update x:%d y:%d w:%d h:%d\n",
114 updateArea.x, updateArea.y, updateArea.width ,updateArea.height );
116 // TODO: obtain pitch of source image, obtain pixel depth of source image.
117 const unsigned int pitchPixels = mImageWidth;
118 const unsigned int pixelDepth = sizeof(unsigned int);
120 // If the width of the source update area is the same as the pitch, then can
121 // copy the contents in a single contiguous TexSubImage call.
122 if(updateArea.x == 0 && updateArea.width == pitchPixels)
124 pixels += updateArea.y * pitchPixels * pixelDepth;
125 mContext.TexSubImage2D( GL_TEXTURE_2D,0, updateArea.x, updateArea.y,
126 updateArea.width, updateArea.height,
127 pixelFormat, pixelDataType, pixels );
131 // Otherwise the source buffer needs to be copied line at a time, as OpenGL ES
132 // does not support source strides. (no GL_UNPACK_ROW_LENGTH supported)
133 unsigned int yBottom = updateArea.y + updateArea.height;
134 pixels += (updateArea.y * pitchPixels + updateArea.x) * pixelDepth;
136 for(unsigned int y = updateArea.y; y < yBottom; y++)
138 mContext.TexSubImage2D( GL_TEXTURE_2D,0, updateArea.x, y,
140 pixelFormat, pixelDataType, pixels );
141 pixels += pitchPixels * pixelDepth;
145 INCREASE_BY( PerformanceMonitor::TEXTURE_DATA_UPLOADED,
146 updateArea.Area()* GetBytesPerPixel( mPixelFormat ));
151 void BitmapTexture::AssignBitmap( bool generateTexture, const unsigned char* pixels )
153 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
154 DALI_LOG_INFO(Debug::Filter::gGLResource, Debug::Verbose, "BitmapTexture::AssignBitmap()\n");
156 GLenum pixelFormat = GL_RGBA;
157 GLenum pixelDataType = GL_UNSIGNED_BYTE;
159 if( generateTexture )
161 mContext.GenTextures(1, &mId);
163 DALI_ASSERT_DEBUG( mId != 0 );
165 mContext.ActiveTexture( TEXTURE_UNIT_UPLOAD );
166 mContext.Bind2dTexture(mId);
167 Integration::ConvertToGlFormat(mPixelFormat, pixelDataType, pixelFormat);
169 mContext.PixelStorei(GL_UNPACK_ALIGNMENT, 1); // We always use tightly packed data
170 mContext.TexImage2D(GL_TEXTURE_2D, 0, pixelFormat, mWidth, mHeight, 0, pixelFormat, pixelDataType, pixels);
171 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
172 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
174 INCREASE_BY( PerformanceMonitor::TEXTURE_DATA_UPLOADED, GetBytesPerPixel(mPixelFormat) * mWidth * mHeight );
177 void BitmapTexture::Update( Integration::Bitmap* bitmap )
179 DALI_LOG_INFO( Debug::Filter::gGLResource, Debug::General, "BitmapTexture::Update(bitmap:%p )\n", bitmap );
180 DALI_ASSERT_DEBUG( bitmap != 0 );
183 DALI_LOG_ERROR( "Passed a null bitmap to update this bitmap texture." );
187 // Only Packed-pixel bitmaps are ever associated with BitmapTextures, so we should never be passed any other kind:
188 const Integration::Bitmap::PackedPixelsProfile * const bitmapPackedPixels = bitmap->GetPackedPixelsProfile();
189 DALI_ASSERT_DEBUG(bitmapPackedPixels);
190 if( !bitmapPackedPixels )
192 ///! This should never happen.
193 DALI_LOG_ERROR("Passed an incompatible bitmap type to update this bitmap texture.");
198 const unsigned char* pixels = mBitmap->GetBuffer();
200 // We should never have null pixel data here - resource manager has deliberately loaded/reloaded data
202 DALI_ASSERT_DEBUG( pixels != NULL );
206 DALI_LOG_ERROR("BitmapTexture::Upload() - Bitmap has no pixel data.\n");
210 if( mImageWidth == mBitmap->GetImageWidth() &&
211 mImageHeight == mBitmap->GetImageHeight() &&
212 mWidth == bitmapPackedPixels->GetBufferWidth() &&
213 mHeight == bitmapPackedPixels->GetBufferHeight() &&
214 mPixelFormat == mBitmap->GetPixelFormat() ) // and size hasn't changed
216 RectArea area(0, 0, mImageWidth, mImageHeight); // just update whole texture
217 AreaUpdated( area, pixels );
218 DiscardBitmapBuffer();
220 else // Otherwise, reload the pixel data
222 mImageWidth = mBitmap->GetImageWidth();
223 mImageHeight = mBitmap->GetImageHeight();
224 mWidth = bitmapPackedPixels->GetBufferWidth();
225 mHeight = bitmapPackedPixels->GetBufferHeight();
226 mPixelFormat = mBitmap->GetPixelFormat();
228 AssignBitmap( false, pixels );
233 void BitmapTexture::UpdateArea( const RectArea& updateArea )
235 DALI_LOG_INFO(Debug::Filter::gGLResource, Debug::General, "BitmapTexture::UpdateArea()\n");
239 const unsigned char* pixels = mBitmap->GetBuffer();
241 // Pixel data could be null if we've uploaded to GL and discarded the data.
245 if( mId ) // If the texture is already bound
247 if( updateArea.IsEmpty() )
252 area.width = mImageWidth;
253 area.height = mImageHeight;
254 AreaUpdated( area, pixels );
258 AreaUpdated( updateArea, pixels );
265 bool BitmapTexture::UpdateOnCreate()
270 bool BitmapTexture::CreateGlTexture()
272 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
273 DALI_LOG_INFO(Debug::Filter::gImage, Debug::Verbose, "BitmapTexture::CreateGlTexture() Bitmap: %s\n", DALI_LOG_GET_OBJECT_C_STR(this));
277 const unsigned char* pixels = mBitmap->GetBuffer();
279 // pixel data could be NULL here if we've had a context loss and we previously discarded
280 // the pixel data on the previous upload. If it is null, then we shouldn't generate a
281 // new GL Texture; leaving mId as zero. Eventually, the bitmap will get reloaded,
282 // and pixels will become non-null.
286 AssignBitmap( true, pixels );
287 DiscardBitmapBuffer();
292 const unsigned char* pixels = NULL;
293 std::vector<unsigned char> pixelData;
294 if( ( NULL == pixels ) && ( true == mClearPixels ) )
296 unsigned int size = mWidth * mHeight * Pixel::GetBytesPerPixel(mPixelFormat);
297 pixelData.resize(size, 0);
298 pixels = &pixelData[0];
300 AssignBitmap( true, pixels );
306 bool BitmapTexture::Init()
308 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
309 // mBitmap should be initialized by now
310 return (mBitmap != 0);
313 unsigned int BitmapTexture::GetWidth() const
315 unsigned int width = mWidth;
318 width = mBitmap->GetImageWidth();
323 unsigned int BitmapTexture::GetHeight() const
325 unsigned int height = mHeight;
328 height = mBitmap->GetImageHeight();
333 void BitmapTexture::DiscardBitmapBuffer()
335 DALI_LOG_INFO(Debug::Filter::gImage, Debug::General, "BitmapTexture::DiscardBitmapBuffer() DiscardPolicy: %s\n", mDiscardPolicy == ResourcePolicy::DISCARD?"DISCARD":"RETAIN");
337 if( ResourcePolicy::DISCARD == mDiscardPolicy )
339 DALI_LOG_INFO(Debug::Filter::gImage, Debug::General, " Discarding bitmap\n");
340 mBitmap->DiscardBuffer();
345 } //namespace Internal