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 const unsigned int pitchPixels = mWidth;
117 const unsigned int pixelDepth = GetBytesPerPixel( mPixelFormat );
119 // If the width of the source update area is the same as the pitch, then can
120 // copy the contents in a single contiguous TexSubImage call.
121 if(updateArea.x == 0 && updateArea.width == pitchPixels)
123 pixels += updateArea.y * pitchPixels * pixelDepth;
124 mContext.TexSubImage2D( GL_TEXTURE_2D,0, updateArea.x, updateArea.y,
125 updateArea.width, updateArea.height,
126 pixelFormat, pixelDataType, pixels );
130 // Otherwise the source buffer needs to be copied line at a time, as OpenGL ES
131 // does not support source strides. (no GL_UNPACK_ROW_LENGTH supported)
132 unsigned int yBottom = updateArea.y + updateArea.height;
133 pixels += (updateArea.y * pitchPixels + updateArea.x) * pixelDepth;
135 for(unsigned int y = updateArea.y; y < yBottom; y++)
137 mContext.TexSubImage2D( GL_TEXTURE_2D,0, updateArea.x, y,
139 pixelFormat, pixelDataType, pixels );
140 pixels += pitchPixels * pixelDepth;
144 INCREASE_BY( PerformanceMonitor::TEXTURE_DATA_UPLOADED,
145 updateArea.Area()* GetBytesPerPixel( mPixelFormat ));
149 void BitmapTexture::AssignBitmap( bool generateTexture, const unsigned char* pixels )
151 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
152 DALI_LOG_INFO(Debug::Filter::gGLResource, Debug::Verbose, "BitmapTexture::AssignBitmap()\n");
154 GLenum pixelFormat = GL_RGBA;
155 GLenum pixelDataType = GL_UNSIGNED_BYTE;
157 if( generateTexture )
159 mContext.GenTextures(1, &mId);
161 DALI_ASSERT_DEBUG( mId != 0 );
163 mContext.ActiveTexture( TEXTURE_UNIT_UPLOAD );
164 mContext.Bind2dTexture(mId);
165 Integration::ConvertToGlFormat(mPixelFormat, pixelDataType, pixelFormat);
167 mContext.PixelStorei(GL_UNPACK_ALIGNMENT, 1); // We always use tightly packed data
168 mContext.TexImage2D(GL_TEXTURE_2D, 0, pixelFormat, mWidth, mHeight, 0, pixelFormat, pixelDataType, pixels);
169 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
170 mContext.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
172 INCREASE_BY( PerformanceMonitor::TEXTURE_DATA_UPLOADED, GetBytesPerPixel(mPixelFormat) * mWidth * mHeight );
175 void BitmapTexture::Update( Integration::Bitmap* bitmap )
177 DALI_LOG_INFO( Debug::Filter::gGLResource, Debug::General, "BitmapTexture::Update(bitmap:%p )\n", bitmap );
178 DALI_ASSERT_DEBUG( bitmap != 0 );
181 DALI_LOG_ERROR( "Passed a null bitmap to update this bitmap texture." );
185 // Only Packed-pixel bitmaps are ever associated with BitmapTextures, so we should never be passed any other kind:
186 const Integration::Bitmap::PackedPixelsProfile * const bitmapPackedPixels = bitmap->GetPackedPixelsProfile();
187 DALI_ASSERT_DEBUG(bitmapPackedPixels);
188 if( !bitmapPackedPixels )
190 ///! This should never happen.
191 DALI_LOG_ERROR("Passed an incompatible bitmap type to update this bitmap texture.");
196 const unsigned char* pixels = mBitmap->GetBuffer();
198 // We should never have null pixel data here - resource manager has deliberately loaded/reloaded data
200 DALI_ASSERT_DEBUG( pixels != NULL );
204 DALI_LOG_ERROR("BitmapTexture::Upload() - Bitmap has no pixel data.\n");
208 if( mImageWidth == mBitmap->GetImageWidth() &&
209 mImageHeight == mBitmap->GetImageHeight() &&
210 mWidth == bitmapPackedPixels->GetBufferWidth() &&
211 mHeight == bitmapPackedPixels->GetBufferHeight() &&
212 mPixelFormat == mBitmap->GetPixelFormat() ) // and size hasn't changed
214 RectArea area(0, 0, mImageWidth, mImageHeight); // just update whole texture
215 AreaUpdated( area, pixels );
216 DiscardBitmapBuffer();
218 else // Otherwise, reload the pixel data
220 mImageWidth = mBitmap->GetImageWidth();
221 mImageHeight = mBitmap->GetImageHeight();
222 mWidth = bitmapPackedPixels->GetBufferWidth();
223 mHeight = bitmapPackedPixels->GetBufferHeight();
224 mPixelFormat = mBitmap->GetPixelFormat();
226 AssignBitmap( false, pixels );
231 void BitmapTexture::Update( Integration::Bitmap* srcBitmap, std::size_t xOffset, std::size_t yOffset )
233 if( NULL != srcBitmap )
235 GLenum pixelFormat = GL_RGBA;
236 GLenum pixelDataType = GL_UNSIGNED_BYTE;
237 Integration::ConvertToGlFormat( mPixelFormat, pixelDataType, pixelFormat );
241 mContext.GenTextures( 1, &mId );
243 mContext.ActiveTexture( TEXTURE_UNIT_UPLOAD );
244 mContext.Bind2dTexture( mId );
245 mContext.PixelStorei( GL_UNPACK_ALIGNMENT, 1 );
247 mContext.TexImage2D( GL_TEXTURE_2D, 0, pixelFormat, mWidth, mHeight, 0, pixelFormat, pixelDataType, NULL );
248 mContext.TexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
249 mContext.TexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
253 mContext.ActiveTexture( TEXTURE_UNIT_UPLOAD );
254 mContext.Bind2dTexture( mId );
255 mContext.PixelStorei( GL_UNPACK_ALIGNMENT, 1 );
258 mContext.TexSubImage2D( GL_TEXTURE_2D, 0,
260 srcBitmap->GetImageWidth(), srcBitmap->GetImageHeight(),
261 pixelFormat, pixelDataType, srcBitmap->GetBuffer() );
265 void BitmapTexture::UpdateArea( const RectArea& updateArea )
267 DALI_LOG_INFO(Debug::Filter::gGLResource, Debug::General, "BitmapTexture::UpdateArea()\n");
271 const unsigned char* pixels = mBitmap->GetBuffer();
273 // Pixel data could be null if we've uploaded to GL and discarded the data.
277 if( mId ) // If the texture is already bound
279 if( updateArea.IsEmpty() )
284 area.width = mImageWidth;
285 area.height = mImageHeight;
286 AreaUpdated( area, pixels );
290 AreaUpdated( updateArea, pixels );
297 bool BitmapTexture::UpdateOnCreate()
302 bool BitmapTexture::CreateGlTexture()
304 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
305 DALI_LOG_INFO(Debug::Filter::gImage, Debug::Verbose, "BitmapTexture::CreateGlTexture() Bitmap: %s\n", DALI_LOG_GET_OBJECT_C_STR(this));
309 const unsigned char* pixels = mBitmap->GetBuffer();
311 // pixel data could be NULL here if we've had a context loss and we previously discarded
312 // the pixel data on the previous upload. If it is null, then we shouldn't generate a
313 // new GL Texture; leaving mId as zero. Eventually, the bitmap will get reloaded,
314 // and pixels will become non-null.
318 AssignBitmap( true, pixels );
319 DiscardBitmapBuffer();
324 const unsigned char* pixels = NULL;
325 std::vector<unsigned char> pixelData;
326 if( ( NULL == pixels ) && ( true == mClearPixels ) )
328 unsigned int size = mWidth * mHeight * Pixel::GetBytesPerPixel(mPixelFormat);
329 pixelData.resize(size, 0);
330 pixels = &pixelData[0];
332 AssignBitmap( true, pixels );
338 bool BitmapTexture::Init()
340 DALI_LOG_TRACE_METHOD(Debug::Filter::gImage);
341 // mBitmap should be initialized by now
342 return (mBitmap != 0);
345 unsigned int BitmapTexture::GetWidth() const
347 unsigned int width = mWidth;
350 width = mBitmap->GetImageWidth();
355 unsigned int BitmapTexture::GetHeight() const
357 unsigned int height = mHeight;
360 height = mBitmap->GetImageHeight();
365 void BitmapTexture::DiscardBitmapBuffer()
367 DALI_LOG_INFO(Debug::Filter::gImage, Debug::General, "BitmapTexture::DiscardBitmapBuffer() DiscardPolicy: %s\n", mDiscardPolicy == ResourcePolicy::DISCARD?"DISCARD":"RETAIN");
369 if( ResourcePolicy::DISCARD == mDiscardPolicy )
371 DALI_LOG_INFO(Debug::Filter::gImage, Debug::General, " Discarding bitmap\n");
372 mBitmap->DiscardBuffer();
377 } //namespace Internal