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add missing functionality to show an atlas face

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This commit is contained in:
Jeremie Roy 2013-05-17 23:42:59 +02:00
parent d7a53cd25f
commit 565d0ca543
2 changed files with 36 additions and 0 deletions
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33
examples/common/font/text_buffer_manager.cpp
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@ -74,6 +74,9 @@ public:
/// append a wide char unicode string to the buffer using current pen position and color
void appendText(FontHandle _fontHandle, const wchar_t* _string);
/// append a whole face of the atlas cube, mostly used for debugging and visualizing atlas
void appendAtlasFace(uint16_t _faceIndex);
/// Clear the text buffer and reset its state (pen/color)
void clearTextBuffer();
@ -277,6 +280,29 @@ void TextBuffer::appendText(FontHandle _fontHandle, const wchar_t* _string)
}
}
}
void TextBuffer::appendAtlasFace(uint16_t _faceIndex)
{
float x0 = m_penX;
float y0 = m_penY;
float x1 = x0 + (float)m_fontManager->getAtlas()->getTextureSize();
float y1 = y0 + (float)m_fontManager->getAtlas()->getTextureSize();
m_fontManager->getAtlas()->packFaceLayerUV(_faceIndex, (uint8_t*)m_vertexBuffer, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u), sizeof(TextVertex) );
setVertex(m_vertexCount + 0, x0, y0, m_backgroundColor);
setVertex(m_vertexCount + 1, x0, y1, m_backgroundColor);
setVertex(m_vertexCount + 2, x1, y1, m_backgroundColor);
setVertex(m_vertexCount + 3, x1, y0, m_backgroundColor);
m_indexBuffer[m_indexCount + 0] = m_vertexCount + 0;
m_indexBuffer[m_indexCount + 1] = m_vertexCount + 1;
m_indexBuffer[m_indexCount + 2] = m_vertexCount + 2;
m_indexBuffer[m_indexCount + 3] = m_vertexCount + 0;
m_indexBuffer[m_indexCount + 4] = m_vertexCount + 2;
m_indexBuffer[m_indexCount + 5] = m_vertexCount + 3;
m_vertexCount += 4;
m_indexCount += 6;
}
void TextBuffer::clearTextBuffer()
{
@ -801,6 +827,13 @@ void TextBufferManager::appendText(TextBufferHandle _handle, FontHandle _fontHan
bc.textBuffer->appendText(_fontHandle, _string);
}
void TextBufferManager::appendAtlasFace(TextBufferHandle _handle, uint16_t _faceIndex)
{
BX_CHECK(bgfx::invalidHandle != _handle.idx, "Invalid handle used");
BufferCache& bc = m_textBuffers[_handle.idx];
bc.textBuffer->appendAtlasFace(_faceIndex);
}
void TextBufferManager::clearTextBuffer(TextBufferHandle _handle)
{
BX_CHECK(bgfx::invalidHandle != _handle.idx, "Invalid handle used");

3
examples/common/font/text_buffer_manager.h
View file

@ -60,6 +60,9 @@ public:
/// append a wide char unicode string to the buffer using current pen position and color
void appendText(TextBufferHandle _handle, FontHandle _fontHandle, const wchar_t* _string);
/// append a whole face of the atlas cube, mostly used for debugging and visualizing atlas
void appendAtlasFace(TextBufferHandle _handle, uint16_t _faceIndex);
/// Clear the text buffer and reset its state (pen/color)
void clearTextBuffer(TextBufferHandle _handle);