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https://github.com/scratchfoundation/bgfx.git
synced 2024-11-25 00:58:30 -05:00
Cleanup.
This commit is contained in:
bkaradzic
parent
b8a69a700b
commit
32b95cace3
2 changed files with 79 additions and 107 deletions
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@ -46,6 +46,7 @@ public:
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private:
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int32_t fit(uint32_t _skylineNodeIndex, uint16_t _width, uint16_t _height);
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/// Merges all skyline nodes that are at the same level.
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void merge();
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@ -55,29 +56,29 @@ private:
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{
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}
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/// The starting x-coordinate (leftmost).
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int16_t x;
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/// The y-coordinate of the skyline level line.
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int16_t y;
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/// The line _width. The ending coordinate (inclusive) will be x+width-1.
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int32_t width; // 32bit to avoid padding
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int16_t x; //< The starting x-coordinate (leftmost).
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int16_t y; //< The y-coordinate of the skyline level line.
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int32_t width; //< The line _width. The ending coordinate (inclusive) will be x+width-1.
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};
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/// width (in pixels) of the underlying texture
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uint32_t m_width;
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/// height (in pixels) of the underlying texture
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uint32_t m_height;
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/// Surface used in squared pixel
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uint32_t m_usedSpace;
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/// node of the skyline algorithm
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std::vector<Node> m_skyline;
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uint32_t m_width; //< width (in pixels) of the underlying texture
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uint32_t m_height; //< height (in pixels) of the underlying texture
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uint32_t m_usedSpace; //< Surface used in squared pixel
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std::vector<Node> m_skyline; //< node of the skyline algorithm
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};
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RectanglePacker::RectanglePacker() : m_width(0), m_height(0), m_usedSpace(0)
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RectanglePacker::RectanglePacker()
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: m_width(0)
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, m_height(0)
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, m_usedSpace(0)
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{
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}
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RectanglePacker::RectanglePacker(uint32_t _width, uint32_t _height) : m_width(_width), m_height(_height), m_usedSpace(0)
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RectanglePacker::RectanglePacker(uint32_t _width, uint32_t _height)
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: m_width(_width)
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, m_height(_height)
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, m_usedSpace(0)
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{
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// We want a one pixel border around the whole atlas to avoid any artefact when
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// sampling texture
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@ -100,7 +101,7 @@ void RectanglePacker::init(uint32_t _width, uint32_t _height)
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bool RectanglePacker::addRectangle(uint16_t _width, uint16_t _height, uint16_t& _outX, uint16_t& _outY)
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{
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int y, best_height, best_index;
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int yy, best_height, best_index;
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int32_t best_width;
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Node* node;
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Node* prev;
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@ -114,19 +115,19 @@ bool RectanglePacker::addRectangle(uint16_t _width, uint16_t _height, uint16_t&
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best_width = INT_MAX;
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for (ii = 0; ii < m_skyline.size(); ++ii)
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{
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y = fit(ii, _width, _height);
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if (y >= 0)
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yy = fit(ii, _width, _height);
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if (yy >= 0)
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{
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node = &m_skyline[ii];
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if ( ( (y + _height) < best_height)
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|| ( ( (y + _height) == best_height)
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if ( ( (yy + _height) < best_height)
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|| ( ( (yy + _height) == best_height)
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&& (node->width < best_width) ) )
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{
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best_height = y + _height;
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best_height = yy + _height;
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best_index = ii;
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best_width = node->width;
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_outX = node->x;
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_outY = y;
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_outY = yy;
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}
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}
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}
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@ -199,34 +200,34 @@ int32_t RectanglePacker::fit(uint32_t _skylineNodeIndex, uint16_t _width, uint16
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const Node& baseNode = m_skyline[_skylineNodeIndex];
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int32_t x = baseNode.x, y;
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int32_t _width_left = width;
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int32_t i = _skylineNodeIndex;
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int32_t xx = baseNode.x, yy;
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int32_t widthLeft = width;
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int32_t ii = _skylineNodeIndex;
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if ( (x + width) > (int32_t)(m_width - 1) )
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if ( (xx + width) > (int32_t)(m_width - 1) )
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{
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return -1;
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}
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y = baseNode.y;
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while (_width_left > 0)
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yy = baseNode.y;
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while (widthLeft > 0)
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{
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const Node& node = m_skyline[i];
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if (node.y > y)
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const Node& node = m_skyline[ii];
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if (node.y > yy)
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{
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y = node.y;
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yy = node.y;
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}
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if ( (y + height) > (int32_t)(m_height - 1) )
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if ( (yy + height) > (int32_t)(m_height - 1) )
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{
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return -1;
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}
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_width_left -= node.width;
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++i;
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widthLeft -= node.width;
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++ii;
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}
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return y;
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return yy;
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}
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void RectanglePacker::merge()
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@ -255,34 +256,25 @@ struct Atlas::PackedLayer
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};
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Atlas::Atlas(uint16_t _textureSize, uint16_t _maxRegionsCount)
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: m_usedLayers(0)
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, m_usedFaces(0)
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, m_textureSize(_textureSize)
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, m_regionCount(0)
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, m_maxRegionCount(_maxRegionsCount)
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{
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BX_CHECK(_textureSize >= 64
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&& _textureSize <= 4096, "suspicious texture size");
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BX_CHECK(_maxRegionsCount >= 64
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&& _maxRegionsCount <= 32000, "suspicious _regions count");
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BX_CHECK(_textureSize >= 64 && _textureSize <= 4096, "Invalid _textureSize %d.", _textureSize);
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BX_CHECK(_maxRegionsCount >= 64 && _maxRegionsCount <= 32000, "Invalid _maxRegionsCount %d.", _maxRegionsCount);
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m_layers = new PackedLayer[24];
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for (int ii = 0; ii < 24; ++ii)
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{
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m_layers[ii].packer.init(_textureSize, _textureSize);
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}
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m_usedLayers = 0;
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m_usedFaces = 0;
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m_textureSize = _textureSize;
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m_regionCount = 0;
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m_maxRegionCount = _maxRegionsCount;
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m_regions = new AtlasRegion[_maxRegionsCount];
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m_textureBuffer = new uint8_t[ _textureSize * _textureSize * 6 * 4 ];
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memset(m_textureBuffer, 0, _textureSize * _textureSize * 6 * 4);
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//BGFX_TEXTURE_MIN_POINT|BGFX_TEXTURE_MAG_POINT|BGFX_TEXTURE_MIP_POINT;
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//BGFX_TEXTURE_MIN_ANISOTROPIC|BGFX_TEXTURE_MAG_ANISOTROPIC|BGFX_TEXTURE_MIP_POINT
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//BGFX_TEXTURE_U_CLAMP|BGFX_TEXTURE_V_CLAMP
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uint32_t flags = 0; // BGFX_TEXTURE_MIN_ANISOTROPIC|BGFX_TEXTURE_MAG_ANISOTROPIC|BGFX_TEXTURE_MIP_POINT;
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uint32_t flags = 0;
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//Uncomment this to debug atlas
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//const bgfx::Memory* mem = bgfx::alloc(textureSize*textureSize * 6 * 4);
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//memset(mem->data, 255, mem->size);
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const bgfx::Memory* mem = NULL;
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m_textureHandle = bgfx::createTextureCube(6
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, _textureSize
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@ -294,32 +286,18 @@ Atlas::Atlas(uint16_t _textureSize, uint16_t _maxRegionsCount)
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}
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Atlas::Atlas(uint16_t _textureSize, const uint8_t* _textureBuffer, uint16_t _regionCount, const uint8_t* _regionBuffer, uint16_t _maxRegionsCount)
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: m_usedLayers(24)
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, m_usedFaces(6)
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, m_textureSize(_textureSize)
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, m_regionCount(_regionCount)
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, m_maxRegionCount(_regionCount < _maxRegionsCount ? _regionCount : _maxRegionsCount)
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{
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BX_CHECK(_regionCount <= 64
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&& _maxRegionsCount <= 4096, "suspicious initialization");
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//layers are frozen
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m_usedLayers = 24;
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m_usedFaces = 6;
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m_textureSize = _textureSize;
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m_regionCount = _regionCount;
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//regions are frozen
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if (_regionCount < _maxRegionsCount)
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{
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m_maxRegionCount = _regionCount;
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}
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else
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{
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m_maxRegionCount = _maxRegionsCount;
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}
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BX_CHECK(_regionCount <= 64 && _maxRegionsCount <= 4096, "_regionCount %d, _maxRegionsCount %d", _regionCount, _maxRegionsCount);
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m_regions = new AtlasRegion[_regionCount];
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m_textureBuffer = new uint8_t[getTextureBufferSize()];
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//BGFX_TEXTURE_MIN_POINT|BGFX_TEXTURE_MAG_POINT|BGFX_TEXTURE_MIP_POINT;
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//BGFX_TEXTURE_MIN_ANISOTROPIC|BGFX_TEXTURE_MAG_ANISOTROPIC|BGFX_TEXTURE_MIP_POINT
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//BGFX_TEXTURE_U_CLAMP|BGFX_TEXTURE_V_CLAMP
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uint32_t flags = 0; //BGFX_TEXTURE_MIN_ANISOTROPIC|BGFX_TEXTURE_MAG_ANISOTROPIC|BGFX_TEXTURE_MIP_POINT;
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uint32_t flags = 0;
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memcpy(m_regions, _regionBuffer, _regionCount * sizeof(AtlasRegion) );
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memcpy(m_textureBuffer, _textureBuffer, getTextureBufferSize() );
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@ -346,15 +324,14 @@ uint16_t Atlas::addRegion(uint16_t _width, uint16_t _height, const uint8_t* _bit
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return UINT16_MAX;
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}
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uint16_t x = 0, y = 0;
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// We want each bitmap to be separated by at least one black pixel
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// TODO manage mipmaps
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uint16_t xx = 0;
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uint16_t yy = 0;
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uint32_t idx = 0;
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while (idx < m_usedLayers)
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{
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if (m_layers[idx].faceRegion.getType() == _type)
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{
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if (m_layers[idx].packer.addRectangle(_width + 1, _height + 1, x, y) )
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if (m_layers[idx].packer.addRectangle(_width + 1, _height + 1, xx, yy) )
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{
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break;
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}
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@ -365,36 +342,34 @@ uint16_t Atlas::addRegion(uint16_t _width, uint16_t _height, const uint8_t* _bit
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if (idx >= m_usedLayers)
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{
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//do we have still room to add layers ?
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if ( (idx + _type) > 24
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|| m_usedFaces >= 6)
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{
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return UINT16_MAX;
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}
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//create new layers
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for (int ii = 0; ii < _type; ++ii)
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{
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m_layers[idx + ii].faceRegion.x = 0;
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m_layers[idx + ii].faceRegion.y = 0;
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m_layers[idx + ii].faceRegion.width = m_textureSize;
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m_layers[idx + ii].faceRegion.height = m_textureSize;
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m_layers[idx + ii].faceRegion.setMask(_type, m_usedFaces, ii);
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AtlasRegion& region = m_layers[idx + ii].faceRegion;
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region.x = 0;
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region.y = 0;
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region.width = m_textureSize;
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region.height = m_textureSize;
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region.setMask(_type, m_usedFaces, ii);
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}
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m_usedLayers += _type;
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m_usedFaces++;
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//add it to the created layer
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if (!m_layers[idx].packer.addRectangle(_width + 1, _height + 1, x, y) )
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if (!m_layers[idx].packer.addRectangle(_width + 1, _height + 1, xx, yy) )
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{
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return UINT16_MAX;
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}
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}
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AtlasRegion& region = m_regions[m_regionCount];
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region.x = x;
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region.y = y;
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region.x = xx;
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region.y = yy;
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region.width = _width;
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region.height = _height;
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region.mask = m_layers[idx].faceRegion.mask;
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@ -412,14 +387,12 @@ uint16_t Atlas::addRegion(uint16_t _width, uint16_t _height, const uint8_t* _bit
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void Atlas::updateRegion(const AtlasRegion& _region, const uint8_t* _bitmapBuffer)
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{
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const bgfx::Memory* mem = bgfx::alloc(_region.width * _region.height * 4);
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//BAD!
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memset(mem->data, 0, mem->size);
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if (_region.getType() == AtlasRegion::TYPE_BGRA8)
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{
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const uint8_t* inLineBuffer = _bitmapBuffer;
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uint8_t* outLineBuffer = m_textureBuffer + _region.getFaceIndex() * (m_textureSize * m_textureSize * 4) + ( ( (_region.y * m_textureSize) + _region.x) * 4);
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//update the cpu buffer
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for (int yy = 0; yy < _region.height; ++yy)
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{
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memcpy(outLineBuffer, inLineBuffer, _region.width * 4);
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@ -427,17 +400,14 @@ void Atlas::updateRegion(const AtlasRegion& _region, const uint8_t* _bitmapBuffe
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outLineBuffer += m_textureSize * 4;
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}
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//update the GPU buffer
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memcpy(mem->data, _bitmapBuffer, mem->size);
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}
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else
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{
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uint32_t layer = _region.getComponentIndex();
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//uint32_t face = _region.getFaceIndex();
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const uint8_t* inLineBuffer = _bitmapBuffer;
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uint8_t* outLineBuffer = (m_textureBuffer + _region.getFaceIndex() * (m_textureSize * m_textureSize * 4) + ( ( (_region.y * m_textureSize) + _region.x) * 4) );
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//update the cpu buffer
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for (int yy = 0; yy < _region.height; ++yy)
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{
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for (int xx = 0; xx < _region.width; ++xx)
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@ -445,7 +415,6 @@ void Atlas::updateRegion(const AtlasRegion& _region, const uint8_t* _bitmapBuffe
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outLineBuffer[(xx * 4) + layer] = inLineBuffer[xx];
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}
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//update the GPU buffer
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memcpy(mem->data + yy * _region.width * 4, outLineBuffer, _region.width * 4);
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inLineBuffer += _region.width;
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outLineBuffer += m_textureSize * 4;
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@ -476,7 +445,7 @@ void Atlas::packUV(const AtlasRegion& _region, uint8_t* _vertexBuffer, uint32_t
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int16_t y0 = (int16_t)( ((float)_region.y * texMult) - float(INT16_MAX) );
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int16_t x1 = (int16_t)( (((float)_region.x + _region.width) * texMult) - float(INT16_MAX) );
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int16_t y1 = (int16_t)( (((float)_region.y + _region.height) * texMult) - float(INT16_MAX) );
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int16_t w = (int16_t) ( (float(INT16_MAX) / 4.0f) * (float) _region.getComponentIndex() );
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int16_t w = (int16_t)( (float(INT16_MAX) / 4.0f) * (float) _region.getComponentIndex() );
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_vertexBuffer += _offset;
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switch (_region.getFaceIndex() )
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@ -33,14 +33,17 @@ struct AtlasRegion
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{
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return (Type) ( (mask >> 0) & 0x0000000F);
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}
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uint32_t getFaceIndex() const
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{
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return (mask >> 4) & 0x0000000F;
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}
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uint32_t getComponentIndex() const
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{
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return (mask >> 8) & 0x0000000F;
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}
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void setMask(Type _type, uint32_t _faceIndex, uint32_t _componentIndex)
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{
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mask = (_componentIndex << 8) + (_faceIndex << 4) + (uint32_t)_type;
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@ -87,14 +90,15 @@ public:
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void packFaceLayerUV(uint32_t _idx, uint8_t* _vertexBuffer, uint32_t _offset, uint32_t _stride) const;
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/// Pack the vertex index of the region as 2 quad into an index buffer
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void packIndex(uint16_t* _indexBuffer, uint32_t _startIndex, uint32_t _startVertex) const
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static void packIndex(uint16_t* _indexBuffer, uint32_t _startIndex, uint32_t _startVertex)
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{
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_indexBuffer[_startIndex + 0] = _startVertex + 0;
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_indexBuffer[_startIndex + 1] = _startVertex + 1;
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_indexBuffer[_startIndex + 2] = _startVertex + 2;
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_indexBuffer[_startIndex + 3] = _startVertex + 0;
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_indexBuffer[_startIndex + 4] = _startVertex + 2;
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_indexBuffer[_startIndex + 5] = _startVertex + 3;
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uint16_t* indices = &_indexBuffer[_startIndex];
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*indices++ = _startVertex + 0;
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*indices++ = _startVertex + 1;
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*indices++ = _startVertex + 2;
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*indices++ = _startVertex + 0;
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*indices++ = _startVertex + 2;
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*indices++ = _startVertex + 3;
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}
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/// return the TextureHandle (cube) of the atlas
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@ -153,6 +157,8 @@ private:
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struct PackedLayer;
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PackedLayer* m_layers;
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AtlasRegion* m_regions;
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uint8_t* m_textureBuffer;
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uint32_t m_usedLayers;
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uint32_t m_usedFaces;
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@ -162,9 +168,6 @@ private:
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uint16_t m_regionCount;
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uint16_t m_maxRegionCount;
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AtlasRegion* m_regions;
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uint8_t* m_textureBuffer;
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};
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#endif // __CUBE_ATLAS_H__
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