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Fix texture alignment

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This was SVN commit r753.
This commit is contained in:
Ykkrosh 2004-07-14 10:40:36 +00:00
parent 8edbcc3f61
commit 55539690f9
1 changed files with 11 additions and 8 deletions
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19
source/gui/CGUI.cpp
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@ -385,19 +385,22 @@ void CGUI::DrawSprite(const CStr& SpriteName,
CRect real = cit->m_Size.GetClientArea(Rect);
// Get the size of a single tiling of the texture
// Get the screen position/size of a single tiling of the texture
CRect TexSize = cit->m_TextureSize.GetClientArea(real);
float TexLeft = -(float)TexSize.left / (float)TexSize.GetWidth();
float TexTop = (float)TexSize.top / (float)TexSize.GetHeight();
float TexLeft = (float)(TexSize.left - real.left) / (float)TexSize.GetWidth();
float TexRight = TexLeft + (float)real.GetWidth() / (float)TexSize.GetWidth();
float TexBottom = TexTop + (float)real.GetHeight() / (float)TexSize.GetHeight();
// 'Bottom' is actually the top in screen-space (I think),
// because the GUI puts (0,0) at the top-left
float TexBottom = (float)(TexSize.bottom - real.bottom) / (float)TexSize.GetHeight();
float TexTop = TexBottom + (float)real.GetHeight() / (float)TexSize.GetHeight();
glBegin(GL_QUADS);
glTexCoord2f(TexRight, TexTop); glVertex3f((float)real.right, (float)real.bottom, cit->m_DeltaZ);
glTexCoord2f(TexLeft, TexTop); glVertex3f((float)real.left, (float)real.bottom, cit->m_DeltaZ);
glTexCoord2f(TexLeft, TexBottom); glVertex3f((float)real.left, (float)real.top, cit->m_DeltaZ);
glTexCoord2f(TexRight, TexBottom); glVertex3f((float)real.right, (float)real.top, cit->m_DeltaZ);
glTexCoord2f(TexRight, TexBottom); glVertex3f((float)real.right, (float)real.bottom, cit->m_DeltaZ);
glTexCoord2f(TexLeft, TexBottom); glVertex3f((float)real.left, (float)real.bottom, cit->m_DeltaZ);
glTexCoord2f(TexLeft, TexTop); glVertex3f((float)real.left, (float)real.top, cit->m_DeltaZ);
glTexCoord2f(TexRight, TexTop); glVertex3f((float)real.right, (float)real.top, cit->m_DeltaZ);
glEnd();
glDisable(GL_TEXTURE_2D);